Refrigerator

Abstract

The application provides a refrigerator, which comprises a cabinet, a door body, an air conditioning film assembly arranged at the top of a refrigeration chamber, a vacuum pump assembly arranged in a compressor chamber, a first sterilization module arranged in the refrigeration chamber, the vacuum pump assembly is opened, the vacuum pump assembly performs air extraction on the refrigeration chamber and discharges the extracted air to other compartments or the outside of the cabinet, air outside the cabinet enters the refrigeration chamber through a flow gap to form at least an air flow circulation path of the refrigeration chamber, the vacuum pump assembly and the outside of the cabinet; the air flow outside the cabinet enters the refrigeration chamber to replace part of the air in the refrigeration chamber, after the vacuum pump assembly is closed, the first sterilization module is opened, the first sterilization module generates ion groups to remove planktonic bacteria introduced by the air entering the refrigeration chamber. The bacterial content in the refrigeration chamber is reduced, and the storage time of food materials in the refrigeration chamber is prolonged.

Description

Technical Field

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

[0002] As an essential appliance in home life, refrigerators prevent food from spoiling by lowering the temperature of the storage space. Currently, in order to improve the preservation quality of food, refrigerators with vacuum space have been proposed. That is, refrigerators have a vacuuming device and a vacuum space for food preservation.

[0003] However, vacuum spaces present several challenges. On one hand, they require a high degree of sealing to their external structure, which increases the demands on the manufacturing process and raises costs. On the other hand, prolonged vacuum storage can negatively impact the appearance of some food products. For example, meat products and contaminating microorganisms consume residual oxygen and produce carbon dioxide, creating an environment with a high concentration of carbon dioxide. This can cause meat to appear purple, resulting in a poor user experience.

[0004] Related technologies extend the storage time of food by setting up a low-oxygen environment. During the process of setting up a low-oxygen environment in the refrigerator, due to the pressure difference between the inside and outside of the refrigerator, air from outside the refrigerator will be introduced into the refrigerator. The newly introduced air contains bacteria such as airborne bacteria, which will affect the preservation of food in the refrigerator.

[0005] In view of the above, this application is hereby submitted. Summary of the Invention

[0006] This application provides a refrigerator that, after the vacuum pump assembly operates following the deoxygenation of fresh air, activates a first sterilization module to remove airborne bacteria introduced into the refrigerator during the deoxygenation process, thereby reducing the impact of external bacteria on food and extending the food's shelf life and freshness.

[0007] Therefore, this application aims to provide a refrigerator, comprising: The enclosure includes a top and a bottom arranged along its length, and the enclosure includes an outer shell and an inner liner, with the inner liner disposed inside the outer shell; The installation space is located between the inner liner and the outer shell; The insulation layer, located in the installation space, is used to insulate the internal storage space of the box from the outside. The compressor compartment is located at the bottom of the housing; The refrigerator compartment, which is configured to be formed by an inner liner, is used for the refrigerated storage of food. The door, used to open or close the refrigerator compartment; The first flow gap is configured as the gap at the connection between the door and the cabinet when the door closes the refrigerator compartment; The first modified atmosphere membrane module is located at the top of the cold storage compartment. The first modified atmosphere membrane module has a faster oxygen permeability than nitrogen permeability. The vacuum pump assembly, located inside the compressor compartment, is used to evacuate the cold storage compartment. When the vacuum pump assembly is working, the air in the refrigerator compartment is drawn out through the first controlled atmosphere membrane assembly; A first sterilization module, located in the refrigerator compartment, generates ion clusters and / or ozone to at least remove bacteria introduced into the refrigerator compartment. The controller is configured as follows: The vacuum pump assembly evacuates the refrigerator compartment through the first modified atmosphere membrane assembly and discharges the extracted gas to other compartments or the outside of the cabinet, so as to create a pressure difference between the inside and outside of the refrigerator compartment; Air from outside the cabinet enters the refrigerator compartment through the flow gap to form at least an airflow circulation path between the refrigerator compartment, the vacuum pump assembly, and the outside of the cabinet. The airflow from outside the cabinet enters the refrigerator compartment to replace some of the gas inside the refrigerator compartment. After the vacuum pump assembly is turned off, the first sterilization module is turned on. The first sterilization module generates ion clusters to remove bacteria introduced by the gas entering the refrigerator compartment.

[0008] By activating the first sterilization module after the fresh air deoxygenation action, the bacteria in the refrigerator compartment caused by the fresh air function are eliminated. This creates a low-bacterial or sterile environment in the refrigerator compartment based on low oxygen, effectively extending the shelf life of the food stored inside.

[0009] In some embodiments of this application, it also includes: A food storage drawer, located in the refrigerator compartment, is used to store food. The food storage drawer includes a drawer shell and a drawer body that can be pulled relative to the drawer shell. The second flow gap is configured as the gap between the openings of the drawer body and the drawer shell after the drawer body and drawer shell are assembled. The second controlled atmosphere membrane module is located at the top of the cold storage compartment. The second controlled atmosphere membrane module has a faster oxygen permeability than nitrogen permeability. The vacuum pump assembly is also used to extract air from the food storage drawer through the second modified atmosphere membrane assembly; A second sterilization module is located inside the food storage drawer. The second sterilization module generates ion clusters and / or ozone to at least remove bacteria introduced into the food storage drawer. The controller is configured as follows: The vacuum pump assembly is controlled to evacuate the crisper drawer and discharge the extracted gas to other compartments or the outside of the cabinet, so as to create a pressure difference between the crisper drawer and the refrigerator compartment; Air enters the refrigerator compartment through the second flow gap to form an airflow circulation path between the refrigerator compartment, the fresh food drawer, the vacuum pump assembly, and the outside of the cabinet, thereby replacing some of the gas inside the fresh food drawer. After the vacuum pump assembly is turned off, the second sterilization module is turned on. The second sterilization module generates ion clusters to remove bacteria brought by the newly introduced gas in the food storage drawer.

[0010] In some embodiments of this application, a first bacterial detection device is also included, which is disposed in the refrigerator compartment and is used to detect the bacterial content in the refrigerator compartment; The controller is configured to shut down the first sterilization module when the bacterial content detected by the first bacterial detection device reaches a first preset bacterial content, and otherwise keep the first sterilization module in operation.

[0011] In some embodiments of this application, during operation of the vacuum pump assembly, the controller is configured to: When the bacterial content in the refrigerator reaches the third preset bacterial content, the first sterilization module is activated; When the bacterial content in the food storage drawer reaches the fourth preset bacterial content, the second sterilization module is activated.

[0012] In some embodiments of this application, an odor-removing module is also included, which is disposed in the refrigerator compartment and is used to remove odor molecules in the refrigerator compartment; The controller is configured to activate the vacuum pump assembly when the odor concentration detected by the first odor detection device in the refrigerator reaches a first preset odor concentration threshold, thereby evacuating the refrigerator and accelerating the airflow circulation inside and outside the refrigerator. and / or Turn on the odor-eliminating module to break down odor molecules in the refrigerator compartment.

[0013] In some embodiments of this application, a door closing detection component is also included, which is used to detect whether the refrigerator compartment is closed; The controller is configured to shut down the first sterilization module when it detects that the refrigerator compartment is open during the operation of the first sterilization module; and to restart the first sterilization module when it detects that the refrigerator compartment is closed again within a certain period of time.

[0014] In some embodiments of this application, the controller is configured to record the opening time of the refrigerator compartment after the refrigerator compartment is opened during the operation of the first sterilization module. When the refrigerator compartment is opened for the preset time, the first sterilization module is turned off. The first sterilization module remains open until the refrigerator compartment is opened at the preset time.

[0015] In some embodiments of this application, it also includes: The rear air duct is located at the back of the cabinet and connects to the refrigerator compartment and the crisper drawer. The refrigeration fan is located in the back air duct to accelerate the airflow in the back air duct; The controller is configured to turn on the refrigeration fan during operation of the vacuum pump assembly and / or the first sterilization module, thereby accelerating airflow within the refrigeration compartment.

[0016] In some embodiments of this application, during the storage of food in the refrigerator, the first sterilization module is activated periodically to sterilize the refrigerator. During the storage of food in the refrigerated drawer, the second sterilization module is activated periodically to sterilize the drawer.

[0017] In some embodiments of this application, it also includes: An oxygen concentration detection device, which is installed in the refrigerator compartment and / or the crisper drawer, is used to detect the oxygen concentration in the refrigerator compartment and / or the crisper drawer; The controller is configured to stop the vacuum pump assembly from evacuating the refrigerator compartment when the oxygen concentration in the refrigerator compartment reaches the upper limit of the first required oxygen content range during the process of the vacuum pump assembly evacuating the refrigerator compartment. and / or During the process of the vacuum pump assembly evacuating the food storage drawer, when the oxygen concentration inside the food storage drawer reaches the upper limit of the second required oxygen content range, the vacuum pump assembly stops evacuating the food storage drawer.

[0018] This application also proposes a refrigerator, which includes: The enclosure includes a top and a bottom arranged along its length, and the enclosure includes an outer shell and an inner liner, with the inner liner disposed inside the outer shell; The installation space is located between the inner liner and the outer shell; The insulation layer, located in the installation space, is used to insulate the internal storage space of the box from the outside. The compressor compartment is located at the bottom of the housing; The refrigerator compartment, which is configured to be formed by an inner liner, is used for the refrigerated storage of food. The door, used to open or close the refrigerator compartment; The flow gap is configured as the gap between the door and the cabinet when the door is closed in the refrigerator compartment. The first modified atmosphere membrane module is located at the top of the cold storage compartment. The first modified atmosphere membrane module has a faster oxygen permeability than nitrogen permeability. The vacuum pump assembly, located inside the compressor compartment, is used to evacuate the cold storage compartment. When the vacuum pump assembly is working, the air in the refrigerator compartment is drawn out through the first controlled atmosphere membrane assembly; A first sterilization module, located in the refrigerator compartment, generates ion clusters and / or ozone to at least remove bacteria introduced into the refrigerator compartment. The controller is configured as follows: The vacuum pump assembly evacuates the refrigerator compartment through the first modified atmosphere membrane assembly and discharges the extracted gas to other compartments or the outside of the cabinet, so as to create a pressure difference between the inside and outside of the refrigerator compartment; Air from outside the cabinet enters the refrigerator compartment through the flow gaps, forming at least an airflow circulation path between the refrigerator compartment, the vacuum pump assembly, and the outside of the cabinet. The airflow from outside the cabinet enters the refrigerator compartment to replace some of the gas inside the refrigerator compartment. Before shutting down the vacuum pump assembly, the first sterilization module is activated. The first sterilization module generates ion clusters to remove bacteria introduced by the gas entering the refrigerator compartment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a refrigerator provided according to an exemplary embodiment; Figure 2 This is a partial structural schematic diagram of one embodiment of refrigerator oxygen reduction provided according to an exemplary embodiment; Figure 3 This is a partial structural schematic diagram of another embodiment of refrigerator oxygen reduction proposed according to an exemplary embodiment; Figure 4 This is a partial structural schematic diagram of yet another embodiment of the refrigerator oxygen reduction proposed according to an exemplary embodiment; Figure 5 This is a partial structural schematic diagram of another embodiment of refrigerator oxygen reduction proposed according to an exemplary embodiment; Figure 6 An exploded view of yet another embodiment of the refrigerator oxygen reduction method proposed according to an exemplary embodiment; Figure 7 This is a partial structural schematic diagram of another embodiment of refrigerator oxygen reduction proposed according to an exemplary embodiment; Figure 8 This is a schematic diagram of one connection of a vacuum pump assembly, a controlled atmosphere membrane assembly, and a piping assembly according to an exemplary embodiment. Figure 9 This is a hardware configuration block diagram of a refrigerator proposed according to an exemplary embodiment; Figure 10 This is a hardware configuration block diagram of a controller proposed according to an exemplary embodiment; Figure 11The control logic for reducing oxygen in the refrigerator compartment is proposed according to an exemplary embodiment; Figure 12 Control logic for switching oxygen depletion in the refrigerator compartment and / or fresh food drawer, as proposed according to an exemplary embodiment; Figure 13 This is another control logic for reducing oxygen in a refrigerator compartment, as proposed according to an exemplary embodiment. Figure 14 This is the control logic for oxygenation in a storage room according to an exemplary embodiment; Figure 15 The control logic for preventing condensation in a refrigerator compartment is proposed according to an exemplary embodiment; Figure 16 The fresh air and oxygen reduction control logic for the food storage drawer is proposed according to an exemplary embodiment; Figure 17 The control logic for preventing condensation in a food storage drawer according to an exemplary embodiment; Figure 18 This is the control logic for the sterilization action of the cold storage room after the oxygen level is reduced by fresh air, according to an exemplary embodiment. Figure 19 This is the control logic for the sterilization action of the food preservation drawer after the oxygen is reduced by fresh air, according to an exemplary embodiment. Figure 20 This is the control logic for the first sterilization module in the cold storage room during the fresh air deoxygenation process, as proposed according to the exemplary embodiment. Figure 21 This document describes the control logic for the sterilization process of a refrigerator before fresh air deoxygenation, using the refrigerator compartment as an example, based on an exemplary embodiment. Figure 22 This document describes the control logic for the sterilization process of a refrigerator before fresh air deoxygenation, using a food storage drawer as an example, based on an exemplary embodiment. Figure 23 The deodorization control logic of a refrigerator, taking the refrigerator compartment as an example, is explained according to an exemplary embodiment. Figure 24 This is a schematic diagram of the structure of the sterilization module and the deodorization module of the refrigerator according to an exemplary embodiment; Figure 25 An explosion of the sterilization module and deodorization module of a refrigerator according to an exemplary embodiment. Figure 1 ; Figure 26 An explosion of the sterilization module and deodorization module of a refrigerator according to an exemplary embodiment. Figure 2 ; Figure 27 for Figure 32 Enlarged view of point A in the middle; Figure 28 for Figure 26 Enlarged view of point B in the middle; Figure 29 This is a schematic diagram of the structure of a photocatalytic unit proposed according to an exemplary embodiment; Figure 30 An exploded view of the photocatalytic unit proposed according to an exemplary embodiment; Figure 31 An exploded view of another photocatalytic unit proposed according to an exemplary embodiment; Figure 32 This is a partial schematic diagram of a sterilization module proposed according to an exemplary embodiment; In the above figures: Bus 81; Memory 82; Processor 83; Communication interface 84; Controller 6; 1. Cold storage compartment; 2. Door; 3. Image acquisition device; 4. Oxygen concentration detection device; 5. Regulating valve; Piping assembly 7; Vacuum pump assembly 8; Modified atmosphere membrane assembly 10; Food storage drawer 11; Cabinet body 100; First door closing detection component 91; Second door closing detection component 92; First modified atmosphere membrane assembly 101; Second modified atmosphere membrane assembly 102; Freezer compartment 12; compressor compartment 13; outer shell 110; inner liner 120; mounting component 71; First humidity detection device 14; Second humidity detection device 141; Refrigeration fan 15; drawer shell 112; drawer body 111; shell 31; Imported 32; Exported 33; Built-in fan 34; Storage space 35; Odor detection device 4; Positive and negative ion generating unit 361; Strong oxidizing ion generating unit 362; Photocatalytic unit 363; positive electrode 3611; negative electrode 3612; Substrate plate 3631; First electrode plate 3632; Second electrode plate 3633; Photocatalyst layer 3634; Cold catalyst unit 364; needle tip structure 3621; emission electrode structure 3622. Detailed Implementation

[0021] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0022] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] This application provides a refrigerator, as shown in the reference. Figure 1 The refrigerator includes a cabinet 100, which includes a top and a bottom arranged along the length direction. The interior of the cabinet 100 forms a storage compartment, which includes at least a refrigerator compartment 1 and a freezer compartment 12, so as to facilitate the refrigeration or freezing of food.

[0026] In some implementations, the storage compartment may also include a food preservation drawer 11 and a variable temperature compartment to meet different storage needs of users.

[0027] Reference Figure 1 In this design, the food storage drawer 11 is located inside the refrigerator compartment 1. It can be understood that the food storage drawer 11 can also be located between the refrigerator compartment 1 and the freezer compartment 12 to accommodate the layout requirements of different models.

[0028] It is understood that the vacuum pump assembly in this application can perform evacuation and oxygen reduction in any storage compartment of the refrigerator, requiring only reasonable piping configuration.

[0029] The refrigerator of this application also includes a door 2, which includes an inner door liner and an outer door shell. The door 2 is used to open and close the storage space. Door 2 can be used to create a relatively enclosed space in the box 100, so as to facilitate the deoxygenation work inside the box 100 and prevent excessive external air from flowing in, which would result in poor deoxygenation effect.

[0030] The gap at the connection between the door 2 and the cabinet 100 when the door 2 is closed to the refrigerator compartment 1 is defined as the first flow gap.

[0031] In some embodiments, a first through hole can be opened on the cabinet 100 to connect the outside of the cabinet 100 and the refrigerator compartment 1. The first through hole can be opened or closed according to the working state to promote the entry of gas outside the refrigerator compartment 1 into the refrigerator compartment 1 during the deoxygenation process or during the operation of the vacuum pump assembly 8, and to make the cabinet 100 form a relatively closed space during the normal storage of the refrigerator.

[0032] It is known that the first through hole can be set as a circular hole or a narrow first through hole, but the ventilable area of ​​the first through hole should not be too large, otherwise it will not be easy to preserve the food in the refrigerator.

[0033] It is understood that, in some embodiments, the first flow gap and the first through hole can work together.

[0034] Reference Figure 2 The cabinet 100 includes an inner liner 120 defining a storage space and an outer shell 110 connected to the outside of the inner liner 120 to form the appearance of a refrigerator. An installation space is formed between the inner liner 120 and the outer shell 110. The installation space is used to form an insulation layer to insulate the storage space inside the cabinet 100 from the outside.

[0035] A back air duct is formed between the inner liner 120 and the outer shell 110. The back air duct is connected to the storage compartment inside the box 100. A refrigeration system is installed in the back air duct. The cold air generated by the refrigeration system enters the box 100 through the back air duct to cool the food in the box 100.

[0036] A refrigeration fan 15 is installed in the back air duct to accelerate the airflow speed of the entire back air duct and the box 100, speed up heat exchange and further promote oxygen reduction efficiency.

[0037] In this application, the refrigeration system for supplying cold air to the storage room includes a compressor, a condenser, an expansion valve, and an evaporator. The refrigerant circulates among the components of this refrigeration system to achieve the cooling effect. The main flow process of the refrigerant among the components is as follows: the refrigerant passes through the compressor and then enters the condenser; after passing through the condenser, it enters the expansion valve; after passing through the expansion valve, it enters the evaporator; and after passing through the evaporator, it flows back to the compressor.

[0038] Specifically, the compressor compresses the refrigerant gas at high temperature and pressure and then discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve causes the high-temperature, high-pressure liquid refrigerant in the condenser to expand into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant that has 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 refrigerant evaporation or heat exchange with the material to be cooled.

[0039] Reference Figure 2 The refrigerator body 100 includes a top and a bottom that are arranged opposite to each other. The bottom of the refrigerator in this application is provided with a compressor compartment 13. In this application, in addition to installing a compressor, a vacuum pump assembly 8 is also installed in the compressor compartment 13. The vacuum pump assembly 8 can be used to extract air from the refrigerator compartment 1 and / or the fresh food drawer 11.

[0040] A first modified atmosphere membrane assembly 101 is installed at the top of the cold storage compartment 1. Because different polymer membranes have different permeability and selectivity for different types of gas molecules, the modified atmosphere membrane assembly can be used to separate a certain type of air from a gas mixture. In this application, it is to separate oxygen from the air.

[0041] By placing the first modified atmosphere membrane assembly 101 at the top of the refrigerator compartment 1, the first modified atmosphere membrane assembly 101 is effectively prevented from being blocked by food, thus avoiding affecting airflow circulation.

[0042] In some embodiments, the first modified atmosphere film assembly 101 may also be located on the rear wall or side wall of the refrigerator compartment 1 to facilitate the overall layout of the refrigerator.

[0043] In some embodiments, multiple first modified atmosphere membrane (MAP) assemblies 101 may be configured, and the MAP assemblies 101 may be disposed at one or a combination of the top, rear wall, and side wall of the refrigerator compartment 1. This is to accelerate the air circulation rate within the refrigerator compartment 1 and improve the oxygen reduction and ventilation efficiency of the refrigerator compartment 1.

[0044] In some embodiments, the modified atmosphere membrane assembly is configured as a thin film made from a conductive organic material, polyaniline. This polymer can be doped with charged atoms, and the permeability of the film can be altered by the amount of dopant. Oxygen passes through this film faster than nitrogen, thus oxygen can be produced using this film.

[0045] To facilitate the operation of the vacuum pump assembly 8, the refrigerator also includes a piping assembly 7, which includes a first piping assembly 7 and a second piping assembly 7, respectively connected to the refrigerator compartment 1 and the crisper drawer 11.

[0046] Specifically, one end of the first pipeline assembly 7 is connected to the vacuum pump assembly 8, and the other end of the first pipeline assembly 7 extends through the insulation layer to the side of the first modified atmosphere film assembly 101 away from the refrigerator compartment 1. The first pipeline assembly 7 is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8.

[0047] When the vacuum pump assembly 8 is working, the air in the refrigerator compartment 1 passes through the first modified atmosphere membrane assembly 101 and is then extracted to better reduce oxygen levels.

[0048] Reference Figure 2 In the middle, the pipeline assembly 7 is installed in the insulation layer through the mounting part 71, which fixes the position of the pipeline assembly 7 in the insulation layer and avoids the insulation layer from bulging or denting due to the setting of the pipeline assembly 7 affecting the foaming process of the insulation layer.

[0049] With the above setup, the vacuum pump assembly 8 is installed inside the compressor compartment 13, which can maintain the refrigerator's storage space without increasing the overall size of the refrigerator. At the same time, the piping assembly 7 is placed inside the insulation layer, eliminating the need for additional space layout. The overall refrigerator design is simple and does not affect the refrigerator's existing functions.

[0050] In some embodiments of this application, a food preservation drawer 11 is disposed within a refrigerator compartment 1. The food preservation drawer 11 includes a drawer shell 112 disposed within the refrigerator compartment 1 and a drawer body 111 that can slide relative to the opening of the drawer shell 112. Exemplarily, a slide rail may be provided on the inner wall of the drawer shell 112, and a sliding block that moves along the slide rail may be provided at a relative position on the drawer body 111.

[0051] In some embodiments, a sealing strip is provided on the side of the drawer body 111 that 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 flow 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 food drawer 11, external air will enter the fresh food drawer 11.

[0052] In some embodiments, a sealing strip is provided at the opening of the drawer shell 112. When the drawer body 111 is pushed into 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 food drawer 11, external air will enter the fresh food drawer 11.

[0053] In some embodiments, a second through hole may be provided on the drawer shell 112 to connect the fresh-keeping drawer 11 with the refrigerator compartment 1. The second through hole may be opened or closed according to the working state of the fresh-keeping drawer 11 to facilitate the entry of gas outside the fresh-keeping drawer 11 (gas inside the refrigerator compartment 1) into the fresh-keeping drawer 11 during the deoxygenation process or during the operation of the vacuum pump assembly 8, and to make the fresh-keeping drawer 11 form a relatively closed space during the normal storage process of the fresh-keeping drawer 11.

[0054] It is understood that, in some embodiments, the second flow gap and the second through hole can work together.

[0055] In some embodiments, a third through hole may be provided on the drawer body 111 to connect the outside of the box 100 and the fresh food drawer 11. The third through hole may be opened or closed according to the working state of the fresh food drawer 11 to facilitate the entry of gas outside the box 100 into the fresh food drawer 11 during the deoxygenation process or the operation of the vacuum pump assembly 8, and to make the fresh food drawer 11 form a relatively closed space during the normal storage process of the fresh food drawer 11.

[0056] It is understood that, in some embodiments, the second flow gap and the third through hole can work together.

[0057] Similarly, in order to reduce oxygen levels in the crisper drawer 11, the refrigerator also includes a second modified atmosphere film assembly 102 and a second piping assembly 7.

[0058] Among them, reference Figure 6 The second modified atmosphere film assembly 102 is disposed on the top of the food preservation drawer 11. The structure of the second modified atmosphere film is the same as that of the first modified atmosphere film assembly 101, and will not be described in detail here.

[0059] By placing the second modified atmosphere film assembly 102 on top of the food storage drawer 11, the first modified atmosphere film assembly 101 is effectively prevented from being blocked by food, thus affecting airflow circulation.

[0060] In some embodiments, the second modified atmosphere film assembly 102 may also be located on the rear wall or side wall of the food preservation drawer 11 to facilitate the overall layout of the refrigerator.

[0061] 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 food preservation drawer 11. This is to accelerate the air circulation speed inside the food preservation drawer 11 and improve the oxygen reduction efficiency and ventilation efficiency of the food preservation drawer 11.

[0062] One end of the second piping assembly 7 is connected to the vacuum pump assembly 8, and the other end of the second piping assembly 7 extends through the insulation layer to the side of the second modified atmosphere film assembly 102 away from the food storage drawer 11. The second piping assembly 7 is used to provide a flow path for the gas extracted by the vacuum pump assembly 8.

[0063] When the vacuum pump assembly 8 is working, the air in the food storage drawer 11 will pass through the second modified atmosphere membrane assembly 102 and then be extracted to perform better deoxygenation.

[0064] Based on the above, when the fresh food drawer can be placed between the refrigerator compartment and the freezer compartment, the oxygen reduction action of the fresh food drawer is the same as that of the refrigerator compartment; when the fresh food drawer is placed in the refrigerator compartment, the air in the refrigerator compartment can be used to participate in the airflow circulation to form airflow between the inside and outside of the fresh food drawer, thereby improving the oxygen reduction efficiency of the fresh food drawer.

[0065] It should be noted that when 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 set up independently, the control logic of the fresh air deoxygenation action and anti-condensation of the fresh-keeping drawer 11 is roughly the same as that of the refrigerator compartment 1. This application mainly describes the technical solution with the fresh-keeping drawer 11 located in the refrigerator compartment 1 as the main focus.

[0066] In some implementations, when the refrigerator performs the fresh air deoxygenation function, the refrigeration fan in the rear air duct is activated to accelerate air circulation and increase the speed of the fresh air deoxygenation module.

[0067] In some embodiments of this example, the first pipeline assembly 7 and the second pipeline assembly 7 are connected at one end. A regulating valve 5 is provided at the connection between the first pipeline assembly 7 and the second pipeline assembly 7. The regulating valve 5 is used to control the connection between the refrigerator compartment 1 and the vacuum pump assembly 8 and / or the fresh food drawer 11 and the vacuum pump assembly 8.

[0068] In some embodiments of this example, the refrigerator further includes a gas collection chamber connected to the air inlet of the vacuum pump assembly 8. The gas collection chamber is used to collect oxygen-enriched gas drawn from the refrigerator compartment 1 and / or the crisper drawer 11 by the vacuum pump assembly 8.

[0069] Specifically, in some embodiments, the gas collection chambers can be set separately or together to collect air from the refrigerator compartment 1 or the crisper drawer 11.

[0070] For example, a gas collection chamber is disposed at the top of the refrigerator compartment 1, and a controlled atmosphere membrane assembly is disposed on the side of the gas collection chamber near the refrigerator compartment 1 for air filtration.

[0071] In some embodiments of this example, the first modified atmosphere membrane assembly 101 includes a gas collection chamber disposed at the top of the refrigerator compartment 1 and an oxygen-enriching membrane disposed on the side of the gas collection chamber near the interior of the compartment 100.

[0072] The gas collection chamber is equipped with an air outlet, which is also the air outlet of the entire modified atmosphere membrane assembly. The air outlet is connected to the first pipeline assembly 7. Under the action of the vacuum pump assembly 8, the air in the refrigerator compartment 1 is evacuated. The oxygen in the air in the refrigerator compartment 1 will adhere to the oxygen-enriched membrane, so that the oxygen content in the gas collection chamber is ultimately higher than the oxygen content in the air in the refrigerator compartment 1, thereby reducing the oxygen content in the refrigerator compartment 1 and promoting airflow circulation in the refrigerator compartment 1, thus improving the food preservation quality of the refrigerator compartment 1.

[0073] In some embodiments of this example, the second modified atmosphere membrane assembly 102 includes a gas collection chamber disposed at the top of the food storage drawer 11 and an oxygen-enriching membrane disposed on the side of the gas collection chamber near the interior of the cabinet 100.

[0074] The gas collection chamber is equipped with an air outlet, which is connected to the second pipeline assembly 7. Under the action of the vacuum pump assembly 8, the air in the fresh-keeping drawer 11 is evacuated. The oxygen in the air inside the fresh-keeping drawer 11 will adhere to the oxygen-enriching film, so that the oxygen content in the gas collection chamber is ultimately higher than the oxygen content in the air inside the fresh-keeping drawer 11, thereby reducing the oxygen content inside the fresh-keeping drawer 11 and improving the food preservation quality of the fresh-keeping drawer 11.

[0075] Reference Figure 10 The refrigerator in this embodiment also includes a controller 6. The controller 6 obtains various operating parameters of the refrigerator through various control programs stored in the memory, and uses these parameters to control the operation of various parts of the refrigerator and respond to user operations. The controller 6 can control the low oxygen requirement of the refrigerator compartment 1 and the fresh food drawer 11, as well as the high oxygen requirement of some storage compartments, according to the state of the control regulating valve 5 and the vacuum pump assembly 8, to meet the different storage needs of users.

[0076] The controller 6 controls the overall operation of the refrigerator. For example, in response to a user's oxygen reduction command for a corresponding compartment, the controller 6 can perform operations related to the object selected by the oxygen reduction command.

[0077] In some embodiments, controller 6 includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), random access memory (RAM), read-only memory (ROM), a first to an nth interface for input / output, a communication bus, etc.

[0078] In the embodiments shown in this application, controller 6 refers to a device that can generate operation control signals according to instruction opcodes and timing signals to instruct the refrigerator to execute control commands.

[0079] This application embodiment also provides a hardware structure diagram of the controller 6, such as... Figure 8 As shown, the controller 6 It includes a processor 83, and optionally, a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, memory 82 and communication interface 84 are connected via a bus 81.

[0080] Processor 83 can be a central processing unit (CPU), a general-purpose processor (NP), a network processor (NP), a digital signal processor (DSP), a microprocessor (Microcontroller), a programmable logic device (PLD), or any combination thereof. Processor 83 can also be any other device with processing capabilities, such as a circuit, device, or software module. Processor 83 can also include multiple CPUs, and processor 83 can be a single-core processor. CPU) processor 83, or multi-core (multi) CPU) Processor 83. Here, processor 83 may refer to one or more devices, circuits, or processing cores used to process data (such as computer program instructions).

[0081] Memory 82 can be a read-only memory 82 (read ROM (Read-Only Memory) or other types of static storage devices capable of storing static information and instructions; random access memory (RAM) or other types of dynamic storage devices capable of storing information and instructions; or electrically erasable programmable read-only memory (EEPROM). EEPROM (Electronic EPROM-only memory) and Compact Disc Retrieval System (CD-ROM) Only memory, CD The storage medium can be ROM or other optical disc storage, optical disk storage (including compressed optical disks, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer. This application embodiment does not impose any limitations on this. The memory 82 can exist independently or be integrated with the processor 83. The memory 82 may contain computer program code. The processor 83 is used to execute the computer program code stored in the memory 82, thereby implementing the control method of the multi-unit refrigerator 100 system provided in this application embodiment.

[0082] The communication interface 84 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.). The communication interface 84 can be a module, circuit, transceiver, or any device capable of communication.

[0083] Bus 81 can be a Peripheral Component Interconnect (PCI) bus 81 or an Extended Industry Standard Architecture (EISA) bus 81, etc. Bus 81 can be divided into address bus 81, data bus 81, control bus 81, etc. For ease of representation, Figure 11 The bus is represented by only one thick line, but this does not mean that there is only one bus 81 or one type of bus 81.

[0084] In some embodiments of this example, the controller 6 is mounted on the door 2. Of course, for layout purposes, the controller 6 can also be mounted on the housing 100.

[0085] In some implementations of this embodiment, reference is made to Figure 9The refrigerator also includes a door closing detection component, which is installed on the door 2 or the cabinet 100. The door closing detection component detects the state of the door 2 and sends an open or closed signal to the controller 6. For example, the door closing detection component is configured as a door closing sensor to detect whether the cabinet 100 is in a closed state, in order to better perform oxygen reduction operations. The door closing detection component used to detect the state of the door is defined as the first door closing detection component 91.

[0086] In some implementations of this embodiment, reference is made to Figure 9 The refrigerator also includes an image acquisition device 3, which is installed in the refrigerator compartment 1 and / or the fresh food drawer 11. The image acquisition device 3 is used to acquire images of the refrigerator compartment 1 and / or the fresh food drawer 11 and send them to the controller 6.

[0087] The controller 6 stores the types of food and the required oxygen content range for preservation. After receiving the image acquired by the image acquisition device 3, the controller 6 can perform image recognition to obtain the types of food in the current space and obtain the corresponding required oxygen content range in order to control the operation of the vacuum pump assembly 8.

[0088] For example, the image acquisition device 3 can be configured as a camera, which is used to acquire images and send them to the controller 6.

[0089] In some implementations of this embodiment, reference is made to Figure 1 The refrigerator also includes an odor detection device 4, which is installed in the refrigerator compartment and / or the crisper drawer. The odor detection device 4 is used to detect the odor concentration in the space to serve as a basis for activating the fresh air deoxygenation function.

[0090] In some implementations, when the odor concentration level detected in the refrigerator compartment 1 or the fresh food drawer 11 reaches a preset threshold, the fresh air deoxygenation function is activated to remove odor molecules through gas replacement.

[0091] Reference Figure 9 The refrigerator also includes an oxygen concentration detection device 4, which is located in the refrigerator compartment 1 and / or the fresh food drawer 11 to detect the oxygen concentration in the refrigerator compartment 1 and / or the fresh food drawer 11, so as to assist the controller 6 in controlling the working status of the vacuum pump assembly 8.

[0092] In some embodiments, the oxygen concentration detection device 4 can also be installed in the storage room to detect the internal oxygen concentration and prevent the internal oxygen concentration from being too high.

[0093] In some embodiments, by setting the chambers that need to be deoxygenated, the number of vacuum pump assemblies 8, and the structure of the vacuum pump assemblies 8, a set number of vacuum pump assemblies 8 can be used to deoxygenate a set number of chambers.

[0094] In some embodiments, the refrigerator also includes a bacterial detection device located in the refrigerator compartment 1 or the crisper drawer 11, which is used to detect the bacterial content in the compartment and output the result to the controller 6 so that the controller 6 can control the corresponding sterilization module to sterilize and extend the food preservation time.

[0095] The bacterial detection device installed in the refrigerator compartment 1 is defined as the first bacterial detection device, and the bacterial detection device installed in the crisper drawer 11 is defined as the second bacterial detection device. Reference Figure 2 As shown, a set of vacuum pump assemblies 8 is installed in the compressor compartment 13. A pipeline assembly 7 is led out from the suction port 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 outlet of the first controlled atmosphere membrane assembly 101 located at the top of the refrigerator compartment 1 to facilitate the extraction of gas from the refrigerator compartment 1. In the figure, one vacuum pump assembly 8 operates for one compartment.

[0096] To improve the oxygen reduction efficiency and airflow circulation within a single room, in some embodiments of this example, multiple first modified atmosphere membrane components 101 and second modified atmosphere membrane components 102 may be configured. Each first modified atmosphere membrane component 101 and second modified atmosphere membrane component 102 may be connected to the extraction end of a vacuum pump component 8 via a corresponding pipeline component 7.

[0097] It is known that the same vacuum pump assembly 8 can be connected here, or different vacuum pump assemblies 8 can be connected.

[0098] By setting multiple modified atmosphere membrane components in a single compartment, i.e., setting multiple air extraction ports, the oxygen reduction efficiency of the refrigerator compartment 1 and / or the fresh food drawer 11 can be effectively improved.

[0099] In order to achieve flexible adjustment of the oxygen content in the compartments connected to the modified atmosphere membrane assembly, in some embodiments of this example, multiple vacuum pump assemblies 8 are provided, 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.

[0100] Refrigerators are generally installed indoors for use, and the noise generated when the vacuum pump assembly 8 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.

[0101] Reference Figure 3-4 The refrigerator shown in the diagram includes two sets of vacuum pump assemblies 8, which are respectively installed on both sides of the compressor compartment 13 along the length direction, so as to... Figure 3Taking the Chinese position as an example, the vacuum pump assembly 8 on the left is defined as the first vacuum pump assembly 8, and the vacuum pump assembly 8 on the right is defined as the second vacuum pump assembly 8.

[0102] The first vacuum pump assembly 8 is connected to the first modified atmosphere film assembly 101 to reduce the oxygen content in the refrigerator compartment 1; the second vacuum pump assembly 8 is connected to the second modified atmosphere film assembly 102 to reduce the oxygen content in the fresh food drawer 11.

[0103] Of course, a vacuum pump assembly 8 can also be used to simultaneously reduce oxygen levels in the refrigerator compartment 1 and the crisper drawer 11. (Refer to...) Figure 5 The refrigerator shown in the figure includes a set of vacuum pump components 8, which are connected to the first modified atmosphere film component 101 and the second modified atmosphere film component 102 respectively, to complete the oxygen reduction action of the refrigerator compartment 1 and the fresh food drawer 11.

[0104] It is known that valves are installed in the pipeline to adjust which chamber the vacuum pump assembly 8 is used to reduce oxygen, thereby achieving precise oxygen reduction.

[0105] In some embodiments of this example, the vacuum pump assembly 8 includes multiple vacuum pumps, which are simultaneously connected to the first pipeline assembly 7 and / or the second pipeline assembly 7, and the airflow in the pipeline is controlled by setting multiple valves.

[0106] The control is configured to simultaneously activate at least two vacuum pumps when a second signal is received regarding the refrigerator compartment 1, in order to accelerate the air extraction speed in the refrigerator compartment 1 and improve the oxygen reduction efficiency.

[0107] It should be noted that when the controller 6 receives the second signal, the controller 6 controls the vacuum pump assembly 8 to work in order to achieve a faster pumping speed and meet the need for strong oxygen reduction.

[0108] In some embodiments of this example, the first modified atmosphere membrane assembly 101 may be connected to multiple vacuum pump assemblies 8 so that two or more vacuum pump assemblies 8 can work to accelerate the rate at which oxygen decreases in the cold storage compartment 1.

[0109] In some embodiments of this example, the controller 6 is configured to simultaneously activate at least two vacuum pump assemblies 8 when it receives a strong oxygen reduction signal for the refrigerator compartment 1, so as to extract the oxygen in the refrigerator compartment 1 as quickly as possible.

[0110] In some embodiments of this example, the second modified atmosphere membrane assembly 102 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 oxygen reduction in the preservation drawer 11 and improve the oxygen reduction efficiency.

[0111] In some embodiments of this example, the controller 6 is configured to simultaneously activate at least two vacuum pump assemblies 8 when it receives a strong oxygen reduction signal for the food storage drawer 11, so as to extract the oxygen in the food storage drawer 11 as quickly as possible and improve the oxygen reduction efficiency.

[0112] Reference Figure 7-8 The diagram shows two sets of vacuum pump assemblies 8, respectively installed on both sides of the compressor compartment 13 along its length, to... Figure 7 Taking the Chinese position as an example, the vacuum pump assembly 8 on the left is defined as the first vacuum pump assembly 8, and the vacuum pump assembly 8 on the right is defined as the second vacuum pump assembly 8.

[0113] The first vacuum pump assembly 8 is connected to the first modified atmosphere film assembly 101 and the second modified atmosphere film assembly 102, and the second vacuum pump assembly 8 is connected to the first modified atmosphere film assembly 101.

[0114] In other words, for the cold storage compartment 1, oxygen can be reduced by the operation of the first vacuum pump assembly 8 and the second vacuum pump assembly 8. In some embodiments, the first vacuum pump assembly 8 and the second vacuum pump assembly 8 can be controlled to work independently or together according to the detected oxygen concentration in the cold storage compartment 1.

[0115] It is known that the first vacuum pump assembly 8 and the second vacuum pump assembly 8 can be set to have the same or different operating frequencies in order to achieve oxygen reduction at different rates and with different energy consumption.

[0116] For the food storage drawer 11, oxygen can be reduced by the first vacuum pump assembly 8.

[0117] In some embodiments of this example, when performing oxygen reduction on the refrigerator drawer 11, oxygen reduction can be performed first in the refrigerator compartment 1, placing the refrigerator drawer 11 in a space with a relatively low oxygen content. After the vacuum pump assembly 8 operates, gas from outside the refrigerator compartment 1 enters the refrigerator compartment 1, and 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 inside the refrigerator compartment 1. Then, the oxygen content in the fresh food drawer 11 is reduced. The air in the fresh food drawer 11 is drawn away through the second modified atmosphere membrane assembly 102, and an air pressure difference is formed between the fresh food drawer 11 and the refrigerator compartment 1. The gas in the refrigerator compartment 1 will enter the fresh food drawer 11 through the gap between the drawer and the drawer shell 112, replacing the original air in the fresh food drawer 11, so that the oxygen content in the fresh food drawer 11 is lower.

[0118] With the above configuration, the technical solution of placing the fresh food drawer 11 in the refrigerator compartment 1, which can perform oxygen reduction, is different from placing the fresh food drawer 11 independently. The fresh food drawer 11 placed in the refrigerator compartment 1 can replace the oxygen content of the gas, and can reach the set oxygen content of the fresh food drawer 11 more quickly.

[0119] During the above process, when a pressure difference exists between the inside and outside of refrigerator compartment 1, the air outside refrigerator compartment 1 will enter refrigerator compartment 1 through the first flow gap or the first through hole under the action of the pressure difference, thereby replacing the air inside refrigerator compartment 1. Within a certain pressure range, the greater the pressure difference between the inside and outside of refrigerator compartment 1, the faster the gas exchange rate between the inside and outside of refrigerator compartment 1.

[0120] When a pressure difference exists between the inside and outside of the refrigerator drawer 11, air from outside the refrigerator drawer 11 or inside the refrigerator compartment 1 enters the refrigerator drawer 11 through the second flow gap, the second through hole, or the third through hole under the action of the pressure difference, thereby replacing the air inside the refrigerator drawer 11. Within a certain pressure range, the greater the pressure difference between the inside and outside of the refrigerator drawer 11, the faster the gas exchange rate between the inside and outside of the refrigerator drawer 11.

[0121] In some embodiments of this application, the oxygen reduction actions of the fresh-keeping drawer 11 and the refrigerator compartment 1 are not sequential and can be performed simultaneously. During the oxygen reduction action, airflow occurs inside the fresh-keeping drawer 11 and the refrigerator compartment 1, and airflow occurs inside and outside the refrigerator compartment 1, to accelerate the oxygen reduction efficiency of the fresh-keeping drawer 11 and the refrigerator compartment 1 and improve the gas replacement process of the fresh-keeping drawer 11 and the refrigerator compartment 1. This ensures that, at least for a period of time, the oxygen content of the fresh-keeping drawer 11 is lower than the oxygen content inside the refrigerator compartment 1.

[0122] In some embodiments of this application, the fresh air oxygen reduction mode can be manually turned on or off, or it can be turned on according to a set program.

[0123] For example, the operation of the oxygen-reducing fresh air mode can be controlled by setting a preset interval time, or by detecting parameters such as the oxygen content and odor molecule content in the space.

[0124] In some implementations, the controller 6 is configured to operate the vacuum pump assembly 8 once at regular intervals; for example, it may be set to operate once every 6 hours.

[0125] In some implementations, when the refrigerator compartment 1 or the fresh food drawer 11 contains a large number of fruits and vegetables, the enhanced mode can be manually activated, increasing the gas replacement operation time and interval compared to before.

[0126] In some implementations, the operating state of the first vacuum pump assembly 8 can be controlled based on the detected oxygen concentration in the food storage drawer 11.

[0127] Furthermore, a regulating valve 5 is installed on the pipeline connected to the first vacuum pump assembly 8, which can adjust the connection and opening of the first vacuum pump assembly 8 with the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102, so as to reach the corresponding oxygen reduction range more quickly within the working capacity of the vacuum pump assembly 8.

[0128] It is understood that although this application does not provide an example of connecting two or more vacuum pump assemblies 8 to the second modified atmosphere membrane assembly 102, the solution is valid and the working state of the connected vacuum pump assembly 8 and the corresponding regulating valve 5 can be adjusted according to the oxygen content in the food storage drawer 11 to achieve the required oxygen content more quickly.

[0129] It should be noted that the technical solution of this application can achieve oxygen reduction in either the refrigerator compartment 1 or the fresh food drawer 11 individually, or simultaneously, by reasonably setting the number and connection of the vacuum pump assembly 8 and the controlled atmosphere membrane assembly. It is understood that the order of oxygen reduction in the refrigerator compartment 1 and the fresh food drawer 11 can be determined based on the internal detection data of the two storage compartments or by operating according to existing program design.

[0130] In some embodiments of this example, the controller 6 is configured to, after the refrigerator is powered on, receive a first signal and turn on the vacuum pump assembly 8 or directly turn on the vacuum pump assembly 8. The vacuum pump assembly 8 pumps air from the refrigerator compartment 1 and discharges the pumped gas to other compartments or the outside of the cabinet 100 to reduce the pressure inside the refrigerator compartment 1, so that there is a pressure difference between the inside and outside of the refrigerator compartment 1. Air outside the cabinet 100 enters the refrigerator compartment 1 through the flow gap to form at least an airflow circulation path between the refrigerator compartment 1, the vacuum pump assembly 8, and the outside of the cabinet 100, thereby replacing some of the gas generated by the food in the refrigerator compartment 1. The oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the cold storage compartment 1 for at least a certain period of time, so as to reduce the oxygen content in the cold storage compartment 1 and make the oxygen content inside the cold storage compartment lower than the relative oxygen content of the gas composition outside the cold storage compartment.

[0131] It is known that the oxygen content in the refrigerator compartment will be reduced to below 21%.

[0132] With the above setup, when the door 2 closes the refrigerator compartment 1, the refrigerator compartment 1 is in a sealed state under normal pressure. At this time, the vacuum pump assembly 8 is most effective at reducing oxygen levels. Simultaneously, because a modified atmosphere membrane assembly is installed at the top of the refrigerator compartment 1, the gas flowing out of the refrigerator compartment 1 passes through the modified atmosphere membrane assembly, allowing oxygen, compared to other molecules, to pass through the modified atmosphere membrane assembly and enter the gas collection chamber. Ultimately, this results in the oxygen content of the gas extracted by the vacuum pump assembly 8 being higher than the oxygen content of the gas inside the refrigerator compartment 1, achieving the oxygen reduction action in the refrigerator compartment 1 and improving the food preservation quality of the refrigerator compartment 1.

[0133] At the same time, by utilizing the pressure difference between the inside and outside of the refrigerator, an airflow circulation path is formed between the refrigerator 1, the vacuum pump assembly 8, and the outside of the cabinet 100. When the vacuum pump assembly 8 draws air from the refrigerator 1, the airflow circulation is used to provide fresh air to the refrigerator 1, thereby removing gases such as carbon dioxide that are not conducive to food preservation and thus forming a gas replacement.

[0134] Similarly, in some embodiments, the controller 6 is also configured such that when the vacuum pump assembly 8 is working, the air in the food preservation drawer 11 enters the second pipeline assembly 7 through the second modified atmosphere membrane assembly 102, wherein the oxygen content of the gas extracted from the food preservation drawer 11 by the vacuum pump assembly 8 is higher than the oxygen content of the remaining air in the food preservation drawer 11 for at least a certain period of time, so as to reduce the oxygen content in the food preservation drawer 11 to meet the food preservation requirements in the food preservation drawer 11.

[0135] In some implementations, the operation of the vacuum pump assembly is also correlated with the state of the cold storage compartment.

[0136] Reference Figure 11 Taking the cold storage compartment 1 as an example, the control logic for reducing oxygen in the embodiments of this application is explained.

[0137] Determine whether the refrigerator compartment 1 is closed (step S1101). In step S1101, if the refrigerator compartment 1 is in the closed state, step S1102 is executed to turn on the vacuum pump assembly 8; In step S1101, if the refrigerator compartment 1 is not closed, then step S1103 is executed to trigger an alarm and remind the user to close the door.

[0138] In some embodiments of this example, the controller 6 is configured to receive a third signal and activate the vacuum pump assembly 8 or directly activate the vacuum pump assembly 8 after the refrigerator is powered on. The vacuum pump assembly 8 evacuates the crisper drawer 11 and discharges the extracted gas to other compartments or the outside of the cabinet 100 to reduce the pressure inside the crisper drawer 11, thereby creating a pressure difference between the crisper drawer 11 and the refrigerator compartment 1. The air in the refrigerator compartment 1 enters the crisper drawer 11 through the second flow gap to form at least an airflow circulation path between the crisper drawer 11, the vacuum pump assembly 8, the outside of the cabinet 100, and the refrigerator compartment 1, thereby replacing part of the gas inside the crisper drawer 11.

[0139] The oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than that of the gas in the preservation drawer 11 for at least a certain period of time, so as to reduce the oxygen content in the preservation drawer 11 and make the relative oxygen content in the preservation drawer 11 lower than that in the refrigerator compartment 1.

[0140] With the above configuration, when the drawer body 111 is placed inside the drawer shell 112, the drawer body 111 and the drawer shell 112 form a normal pressure closed state, which is the most effective time to perform oxygen reduction operation. Simultaneously, a second modified atmosphere film assembly 102 is installed at the top of the fresh-keeping drawer 11. Gas flowing out of the fresh-keeping drawer 11 passes through the second modified atmosphere film assembly 102, causing oxygen, compared to other molecules, to pass through the modified atmosphere film assembly into the gas collection chamber. Ultimately, this results in the oxygen content of the gas extracted by the vacuum pump being higher than the oxygen content of the gas inside the fresh-keeping drawer 11, achieving oxygen reduction in the fresh-keeping drawer 11 and improving the preservation quality of the food in the fresh-keeping drawer 11.

[0141] At the same time, by utilizing 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 compartment 1, a gas circulation path is formed between the refrigerator compartment 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the cabinet 100. When the vacuum pump assembly 8 extracts air from the fresh-keeping drawer 11, the airflow circulation formed achieves the fresh air exchange function of the fresh-keeping drawer 11, so as to remove the carbon dioxide and other gases that are not conducive to the preservation of food generated during the storage process, thus forming a gas replacement.

[0142] In some embodiments of this example, a second door closing detection component 92 is provided on the opening side of the drawer shell 112 to detect whether the drawer shell 112 and the drawer body 111 form a normal pressure closed space.

[0143] When the drawer body 111 moves toward the bottom of the drawer shell 112, it is determined that the food storage drawer 11 is in a closed state, and the drawer body 111 and the drawer shell 112 form a relatively closed space under normal pressure.

[0144] It is known that when the drawer shell 112 and the drawer body 111 form a normal pressure closed space, the fresh air and oxygen reduction function of the fresh food drawer 11 can be activated by determining whether the door is open or closed, or the fresh air and oxygen reduction function of the fresh food drawer 11 can be activated directly.

[0145] In some implementations, before activating the fresh air deoxygenation function of the food storage drawer 11, it is first determined whether the food storage drawer 11 is in a closed state. When the food storage drawer 11 is in a closed state, the fresh air deoxygenation function is activated normally. When the food storage drawer 11 is not in a closed state, an alarm can be triggered or the fresh air deoxygenation function can be activated at the same time as the alarm is triggered.

[0146] In some embodiments of this example, oxygen reduction can be performed on the refrigerator compartment 1 and the fresh food drawer 11 simultaneously or sequentially.

[0147] The controller 6 is configured such that, after the refrigerator is powered on, the vacuum pump assembly 8 evacuates the refrigerator compartment 1 and the crisper drawer 11 and discharges the evacuated gas to other compartments or outside the cabinet 100, so as to create a pressure difference between the inside and outside of the refrigerator compartment 1 and the inside and outside of the crisper drawer 11. Air outside the cabinet 100 enters the refrigerator compartment 1 through the first flow gap to form an airflow circulation path between the refrigerator compartment 1, the vacuum pump assembly 8, and the outside of the cabinet 100, thereby replacing part of the gas in the refrigerator compartment 1. Part of the gas in the refrigerator compartment 1 is extracted by the vacuum pump assembly 8 through the first modified atmosphere membrane assembly 101, and part of the gas enters the fresh food drawer 11 through the second flow gap, so as to form an airflow circulation path between the refrigerator compartment 1, the fresh food drawer 11, the vacuum pump assembly 8, and the outside of the cabinet 100, thereby replacing part of the gas in the fresh food drawer 11. Specifically, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas inside the crisper 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 inside the refrigerator compartment 1 for at least a certain period of time. This ensures that, for at least a certain period of time, the relative oxygen content of the gas inside the refrigerator compartment 1 is lower than the relative oxygen content of the gas outside the refrigerator compartment 100; and for at least a certain period of time, the relative oxygen content of the gas inside the crisper drawer 11 is lower than the relative oxygen content of the gas inside the refrigerator compartment 1.

[0148] Through the above settings, a first airflow circulation path is formed between the refrigerator compartment 1, the vacuum pump assembly 8, and the cabinet 100, and a second airflow circulation path is formed between the refrigerator compartment 1, the fresh food drawer 11, the vacuum pump assembly 8, and the cabinet 100, thereby enabling the fresh air and oxygen reduction functions of the refrigerator compartment 1 and the fresh food drawer 11.

[0149] Meanwhile, with the support of the fresh air and oxygen reduction function in the refrigerator compartment 1, the fresh air and oxygen reduction process in the fresh air drawer 11 is accelerated. The gas entering the fresh air drawer 11 from the refrigerator compartment 1 not only promotes the ventilation of the fresh air drawer 11, but also accelerates the airflow circulation within the refrigerator compartment 1 itself.

[0150] Reference Figure 16 This explains the fresh air and oxygen reduction control logic of the food storage drawer 11.

[0151] Refrigerator is powered on (step S1601). Is the food storage drawer 11 closed? (Step S1602) In step S1602, if the food preservation drawer 11 is in a closed state, then step S1603 is executed, and the vacuum pump assembly 8 evacuates the food preservation drawer 11. In step S1602, if the crisper drawer 11 is not closed, then step S1604 is executed, and the refrigerator alarms or the vacuum pump assembly 8 performs evacuation in a preset working state.

[0152] In the above steps, when the food storage drawer 11 is not closed, the vacuum pump assembly 8 can pump air according to the preset working state to prepare the food storage drawer 11. Normal pumping will only be performed after the food storage drawer 11 is detected to be closed.

[0153] In the preset working state, the working frequency of the vacuum pump assembly 8 is higher than that in the normal evacuation state, so as to form a rapid airflow replacement in a small area within the food storage drawer 11.

[0154] In some embodiments of this example, in order to better regulate the oxygen content of each compartment of the refrigerator, the refrigerator is also provided with a regulating valve 5. The regulating valve 5 is used to control whether the first modified atmosphere film assembly 101 and the vacuum pump assembly 8, as well as the second modified atmosphere film assembly 102 and the vacuum pump assembly 8 are connected.

[0155] For example, the regulating valve 5 can be configured as a three-way valve, which can selectively reduce oxygen in the refrigerator compartment 1 and / or the fresh food drawer 11 by adjusting the opening and closing of the regulating valve 5.

[0156] Based on the above, the controller 6 is configured to receive the oxygen reduction command of the corresponding compartment, control the state of the regulating valve 5, and realize the oxygen reduction action of the corresponding compartment.

[0157] It is known that the oxygen level in both the refrigerator compartment 1 and the fresh food drawer 11 can be reduced simultaneously, expanding the size of the low-oxygen space to meet the user's needs for low-oxygen storage of food.

[0158] Reference Figure 12 This describes the control logic for switching between oxygen reduction in the refrigerator compartment 1 and / or the fresh food drawer 11 in the embodiments of this application.

[0159] Determine whether an oxygen reduction command has been received from the cold storage compartment 1 (step S1201). In step S1201, if a deoxygenation command is received from the refrigerator compartment 1, then step S1202 is executed to determine whether a deoxygenation command is received from the fresh food drawer 11. In step S1202, if an oxygen reduction command is received from the preservation drawer 11, then step S1203 is executed, adjusting the regulating valve 5, and connecting the vacuum pump assembly 8 with the first modified atmosphere film assembly 101 and the second modified atmosphere film assembly 102. In step S1202, if no oxygen reduction instruction is received from the preservation drawer 11, then step S1204 is executed, adjusting the regulating valve 5, and connecting the vacuum pump assembly 8 with the first modified atmosphere membrane assembly 101. In step S1201, if no oxygen reduction command is received from the refrigerator compartment 1, then step S1205 is executed to determine whether an oxygen reduction command is received from the fresh food drawer 11. In step S1205, if an oxygen reduction command is received from the preservation drawer 11, then step S1206 is executed, adjusting the regulating valve 5, and connecting the vacuum pump assembly 8 with the second modified atmosphere membrane assembly 102. In step S1205, if no oxygen reduction instruction is received from the preservation drawer 11, then step S1207 is executed, adjusting the regulating valve 5, and the vacuum pump assembly 8 is not connected to the first modified atmosphere film assembly 101 and the second modified atmosphere film assembly 102.

[0160] In step S1203, if the vacuum pump assembly 11 is connected to the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102, then the vacuum pump assembly 11 performs fresh air deoxygenation on the refrigerator compartment 1 and the fresh food drawer 11.

[0161] During this process, air outside the cabinet 100 enters the refrigerator compartment 1 through the first flow gap to form an airflow circulation path between the refrigerator compartment 1, the vacuum pump assembly 11, and the outside of the cabinet 100, thereby replacing part of the gas in the refrigerator compartment 1. Part of the gas in the refrigerator compartment 1 is extracted by the vacuum pump assembly 11 through the first modified atmosphere membrane assembly 101, and part of it enters the fresh food drawer 11 through the second flow gap to form an airflow circulation path between the refrigerator compartment 1, the fresh food drawer 11, the vacuum pump assembly 11, and the outside of the cabinet 100, thereby replacing part of the gas in the fresh food drawer 11. This achieves the purpose of fresh air exchange and oxygen reduction in the two compartments, the refrigerator compartment 1 and the fresh food drawer 11.

[0162] In some embodiments of this example, an odor detection device is installed inside the refrigerator compartment 1 to detect the concentration of odors within the refrigerator compartment 1. The odor detection device installed inside the refrigerator compartment 1 is defined as a first odor detection device. The odor detection device can at least identify volatile amines and volatile nitrogenous substances.

[0163] The controller 6 is configured to activate the vacuum pump assembly 11 when the odor concentration detected by the odor detection device in the refrigerator compartment 1 reaches a first preset odor concentration threshold, thereby using the vacuum pump assembly 11 to evacuate the refrigerator compartment 1 and promote airflow circulation inside and outside the refrigerator compartment 1.

[0164] In some embodiments of this example, an odor detection device is disposed inside the food storage drawer 11 to detect the concentration of odors inside the food storage drawer 11. The odor detection device disposed inside the food storage drawer 11 is defined as a second odor detection device.

[0165] The controller 6 is configured to activate the vacuum pump assembly 11 when the odor concentration detected by the second odor detection device in the fresh food drawer 11 reaches the second preset odor concentration threshold, thereby using the vacuum pump assembly 11 to evacuate the fresh food drawer 11 and promote airflow circulation inside and outside the fresh food drawer 11.

[0166] To further improve the efficiency of oxygen reduction, the controller 6 is also configured to turn on the refrigeration fan 15 when the vacuum pump is working, so as to accelerate the airflow in the refrigeration compartment 1.

[0167] During the operation of the vacuum pump, the refrigerator may be in one of two states: cooling or not cooling. When the refrigerator is in cooling mode, it is assumed that the refrigeration fan 15 is on and does not need to be turned on again.

[0168] When the refrigerator is not cooling, turn on the refrigeration fan 15. The cooling operation of the refrigeration system is not within the scope of this application and will not be described in detail here.

[0169] In some embodiments of this example, the controller 6 is configured to receive images acquired by the image acquisition device 3 inside the refrigerator compartment 1 after food is placed in the refrigerator compartment 1, obtain the type of food and obtain the first required oxygen content range of the food accordingly, turn on the vacuum pump assembly 8, and adjust the regulating valve 5 to connect the refrigerator compartment 1 with the vacuum pump assembly 8; when the oxygen concentration detected by the oxygen concentration detection device 4 reaches the upper limit of the first required oxygen content range, turn off the vacuum pump assembly 8.

[0170] In some embodiments of this example, the controller 6 is also configured to receive images acquired by the image acquisition device 3 inside the fresh food drawer 11 after food is placed inside the fresh food drawer 11, obtain the type of food and thereby obtain the second required oxygen content range of the food, turn on the vacuum pump assembly 8, and adjust the regulating valve 5 to connect the fresh food drawer 11 with the vacuum pump assembly 8. When the oxygen concentration in the food storage drawer 11 reaches the upper limit of the second required oxygen content range, the vacuum pump assembly 8 is turned off.

[0171] Reference Figure 13 This describes another control logic for reducing oxygen in the refrigerator compartment 1 in the embodiments of this application.

[0172] Image acquisition device 3 acquires images of the refrigerator compartment 1 and sends them to controller 6 (step S1301). Obtain the corresponding first required oxygen content range (step S1302); Control vacuum pump assembly 8 to turn on (step S1303); Determine whether the oxygen concentration in the cold storage compartment 1 has reached the upper limit of the first required oxygen content range (step S1304). In step S1304, if the oxygen concentration reaches the upper limit of the first required oxygen content range, then step S1305 is executed to shut down the vacuum pump assembly 8. In step S1304, if the oxygen concentration does not reach the upper limit of the first required oxygen content range, then step 1304 is executed.

[0173] In the above steps, the required oxygen content range is determined based on the type of food obtained from image recognition. Oxygen reduction actions are then performed for different types of food to achieve precise oxygen reduction, which can better meet the user's refined storage needs.

[0174] In some embodiments of this example, the refrigerator also includes other storage compartments (not shown in the figure), which may be located inside the cabinet 100 or outside the cabinet 100. The storage compartments include an oxygen inlet communicating with the outlet of the vacuum pump assembly 8 to receive gas from the gas collection chamber.

[0175] The vacuum pump assembly 8 is configured to draw gas from the refrigerator compartment 1 and / or the fresh food drawer 11 into the gas collection chamber through the piping assembly 7, so that more oxygen in the air around the modified atmosphere membrane assembly permeates through the modified atmosphere membrane assembly into the gas collection chamber than nitrogen in the air around the modified atmosphere membrane assembly, thereby reducing the oxygen concentration in the refrigerator compartment 1 and / or the fresh food drawer 11. The gas in the gas collection chamber enters the storage chamber via the vacuum pump assembly 8, thereby creating a high-oxygen-concentration space within the storage chamber.

[0176] A nitrogen-rich, oxygen-poor gas atmosphere is created in the refrigerator compartment 1 or the fresh-keeping drawer 11 to preserve fruits and vegetables, and a high-oxygen gas atmosphere with an oxygen content between 22% and 28% is created in the aforementioned high-oxygen concentration space to preserve and store meat.

[0177] Of course, a gas collection chamber can also be set at the exhaust port of the vacuum pump assembly 8, and then a storage chamber requiring high oxygen conditions can be selectively connected to the gas collection chamber.

[0178] In some embodiments of this example, the outlet of the vacuum pump assembly 8 can also be connected to the outside of the housing 100. The controller 6 is configured to discharge the extracted gas from the housing 100 when the oxygen content in the storage room reaches the lower limit of the preset oxygen concentration range, but the pumping action of the vacuum pump assembly 8 has not stopped.

[0179] Reference Figure 14 This describes the control logic for oxygenation in the storage room in the embodiments of this application.

[0180] Received oxygenation command for storage room (step S1401). Turn on vacuum pump assembly 8 (step S1402). Determine whether the oxygen content in the storage room has reached the lower limit of the preset oxygen concentration range (S1403). In step S1403, if the oxygen content reaches the lower limit of the preset oxygen concentration range, then step S1404 is executed to determine whether the oxygen concentration of the corresponding evacuated chamber reaches the required oxygen content range. In step S1404, if the oxygen concentration reaches the required oxygen content range, then step S1405 is executed to shut down the vacuum pump assembly 8. In step S1404, if the oxygen concentration does not reach the required oxygen content range, then step S1406 is executed to open the outlet of the vacuum pump assembly 8 to the outside of the housing 100. In step S1403, if the oxygen content does not reach the lower limit of the preset oxygen concentration range, then step S1403 is executed.

[0181] In the above embodiment, the refrigerator includes a cabinet 100 having a top and a bottom arranged along its length. The cabinet 100 includes an outer shell 110 and an inner liner 120. The inner liner 120 is disposed inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110. The installation space is used to form an insulation layer. The interior of the inner liner 120 forms a refrigerator compartment 1, a freezer compartment 12, and a crisper drawer 11. The refrigerator also includes a door 2 for opening and closing the refrigerator compartment 1, a controlled atmosphere membrane assembly disposed at the top of the refrigerator compartment 1, a vacuum pump assembly 8 disposed in the compressor compartment 13, and a connection for connecting a vacuum pump. The pump assembly 8 and the modified atmosphere membrane assembly's piping assembly 7 are configured to provide a flow path for the gas extracted by the vacuum pump assembly 8 from the refrigerator compartment 1 and / or the crisper drawer 11. One end of the piping assembly 7 is connected to the vacuum pump assembly 8, and the other end is connected to the modified atmosphere membrane assembly via an insulation layer. The piping assembly 7 provides a flow path for the gas extracted by the vacuum pump assembly 8. The controller 6 is configured to activate the vacuum pump assembly 8 when the door 2 closes the refrigerator compartment 1, ensuring that the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content inside the refrigerator compartment 1 for at least a certain period, thereby reducing the oxygen content inside the refrigerator compartment 1. This helps preserve perishable foods such as meat and seafood in the refrigerator compartment 1, improving the refrigerator's food preservation capabilities.

[0182] At the same time, by setting up pipelines, the extracted air with a higher oxygen content than the air itself is introduced into the room that needs oxygen enrichment, effectively realizing the utilization of the air and eliminating or reducing the need for oxygen-generating devices.

[0183] In some embodiments of this example, a dehumidifier is installed at the air inlet of the storage room with oxygen-enriched requirements to prevent moisture from other rooms from entering the room and affecting storage. For example, the dehumidifier can be a desiccant.

[0184] In some embodiments of this example, a sterilization device is installed at the air inlet of the storage room requiring oxygen enrichment to prevent bacteria from other rooms from entering and contaminating the oxygen-enriched storage room. For example, the sterilization device can be configured as an ion generator or an ozone generator.

[0185] In some embodiments of this application, the refrigerator further includes a first humidity detection device 14, disposed within the refrigerator compartment 1, for detecting the humidity within the refrigerator compartment 1. The humidity detection device within the refrigerator compartment is defined as the first humidity detection device 14. For example, the first humidity detection device 14 is configured as a humidity sensor.

[0186] In some embodiments of this application, the hardware structure described in the above embodiments is included, 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, to turn on the vacuum pump assembly 8, the vacuum pump assembly 8 to pump air from the refrigerator compartment 1 and discharge the pumped air to other compartments or the outside of the cabinet 100, so as to reduce the pressure inside the refrigerator compartment 1; the air outside the cabinet 100 enters the refrigerator compartment 1 through the flow gap, so as to form at least an airflow circulation path of the refrigerator compartment 1, the vacuum pump assembly 8, and the outside of the cabinet 100, so as to discharge the water vapor inside the refrigerator compartment 1 through airflow circulation.

[0187] With the above setup, the vacuum pump assembly 8 is used to extract the gas from the refrigerator compartment 1. Because a first modified atmosphere membrane assembly is set at the air outlet of the refrigerator compartment 1, the gas is drawn out through the first modified atmosphere membrane assembly, so that more oxygen in the gas in the refrigerator compartment 1 is drawn out than other gases. The air outside the cabinet 100 enters the refrigerator compartment 1 through the first flow gap, and the airflow circulation carries away the water vapor in the air in the refrigerator compartment 1, effectively reducing the humidity in the refrigerator compartment 1.

[0188] In some embodiments of this example, 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 drops to a second preset humidity value, thereby slowing down or stopping the airflow circulation in the refrigerator compartment 1.

[0189] Reference Figure 15 This describes the anti-condensation control logic of the refrigerator compartment 1 in this application.

[0190] Receive the humidity value of the refrigerator compartment 1 when the first humidity detection device 14 detects it (step S1501). Determine whether the humidity value has reached the first preset humidity value (step 1502); In step S1502, when the humidity value reaches the first preset humidity value, step S1503 is executed to turn on the vacuum pump assembly 8. Determine whether the humidity value has decreased to the second preset humidity value (step S1505); In step S1505, if the humidity value drops to the second preset humidity value, then step 1506 is executed to turn off the vacuum pump assembly 8 or reduce the operating frequency of the vacuum pump assembly 8. In step S1505, if the humidity value does not decrease to the second preset humidity value, then step S1507 is executed to maintain the working state of the vacuum pump assembly 8. In step S1502, if the humidity value does not reach the first preset humidity value, then step S1504 is executed to maintain the working state of the vacuum pump assembly 8.

[0191] By controlling the working state of the vacuum pump assembly 8, the humidity value inside the refrigerator compartment 1 is controlled, thereby controlling the condensation situation inside the refrigerator compartment 1, avoiding condensation inside the refrigerator compartment 1, and improving the refrigeration effect.

[0192] It is understood that the above technical solution is also used in the food preservation drawer 11. By controlling the working state of the vacuum pump component 8 related to the food preservation drawer 11, the humidity value of the air inside the food preservation drawer 11 is controlled, thereby controlling the condensation inside the food preservation drawer 11.

[0193] In the above embodiment, the refrigerator includes a cabinet 100 having a top and a bottom arranged along its length. The cabinet 100 includes an outer shell 110 and an inner liner 120. The inner liner 120 is disposed inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110. The installation space is used to form an insulation layer. The interior of the inner liner 120 forms a refrigerator compartment 1, a freezer compartment 12, and a crisper drawer 11. The refrigerator also includes a door 2 for opening and closing the refrigerator compartment 1, a controlled atmosphere film assembly disposed at the top of the refrigerator compartment 1, a vacuum pump assembly 8 disposed in the compressor compartment 13, and a piping assembly 7 for connecting the vacuum pump assembly 8 and the controlled atmosphere film assembly. The vacuum pump assembly 8 is used to extract air from the refrigerator compartment 1 and / or the crisper drawer 11, and the piping assembly 7... One end of the piping assembly 7 is connected to the vacuum pump assembly 8, and the other end is connected to the controlled atmosphere membrane assembly through an insulation layer. The piping assembly 7 provides a flow path 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. When the humidity value reaches a preset humidity value, the vacuum pump assembly 8 is turned on. The vacuum pump assembly 8 extracts air from the refrigerator compartment 1 and discharges the extracted gas to other compartments or the outside of the cabinet 100 to reduce the pressure inside the refrigerator compartment 1. Air from outside the cabinet 100 enters the refrigerator compartment 1 through the flow gap to form at least an airflow circulation path between the refrigerator compartment 1, the vacuum pump assembly 8, and the outside of the cabinet 100, so as to discharge the water vapor in the refrigerator compartment 1 through airflow circulation. By removing the water vapor in the air inside the refrigerator compartment 1 through airflow circulation, the humidity inside the refrigerator compartment 1 is effectively reduced. This helps the refrigerator compartment 1 preserve perishable foods such as meat and seafood, and improves the food preservation ability of the refrigerator.

[0194] In some embodiments of this example, the refrigerator further includes a second humidity detection device 141, which is disposed inside the crisper drawer 11 and is used to detect the humidity value inside the crisper drawer 11 and send it to the controller 6. Exemplarily, the second humidity detection device 141 is configured as a humidity sensor.

[0195] In some embodiments of this application, the hardware structure described in the above embodiments is included, wherein the controller 6 is configured to receive the humidity value from the second humidity detection device 141, and when the humidity value reaches a third preset humidity value, to turn on the vacuum pump assembly 8, the vacuum pump assembly 8 to evacuate the fresh food drawer 11 and discharge the extracted gas to the outside of other compartments or the cabinet 100, so as to reduce the pressure inside the fresh food drawer 11; the air in the refrigerator compartment 1 enters the fresh food drawer 11 through the second flow gap, so as to form at least an airflow circulation path between the refrigerator compartment 1, the fresh food drawer 11, the vacuum pump assembly 8, and the outside of the cabinet 100, so as to discharge the water vapor inside the fresh food drawer 11 through airflow circulation.

[0196] With the above setup, the vacuum pump assembly 8 extracts the gas from the fresh food drawer 11. Because a second modified atmosphere film assembly 102 is installed at the air outlet of the fresh food drawer 11, the gas is drawn out through the second modified atmosphere film assembly 102, so that more oxygen in the gas in the fresh food drawer 11 is drawn out than other gases. The air in the refrigerator compartment 1 enters the refrigerator compartment 1 through the second flow gap, and the excess moisture in the air in the fresh food drawer 11 is carried away by the airflow circulation, effectively reducing the humidity of the fresh food drawer 11.

[0197] In some implementations, the humidity detection value of the first humidity detection device 14 in the refrigerator compartment 1 also needs to be considered to prevent moisture in the air in the refrigerator compartment 1 from entering the fresh-keeping drawer 11 through airflow circulation.

[0198] In some embodiments of this example, 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 food preservation drawer 11 drops to a fourth preset humidity value, thereby slowing down or stopping the airflow circulation inside and outside the food preservation drawer 11.

[0199] Reference Figure 17 This describes the anti-condensation control logic of the food preservation drawer 11 in this application.

[0200] Receive the humidity value of the food preservation drawer 11 when the second humidity detection device 141 detects it (step S1701). Determine whether the humidity value has reached the third preset humidity value (step S1702). 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. Determine whether the humidity value has decreased to the fourth preset humidity value (step S1705); In step S1705, if the humidity value drops to the fourth preset humidity value, then step S1706 is executed to turn off the vacuum pump assembly 8 or reduce the operating frequency of the vacuum pump assembly 8. In step S1705, if the humidity value does not decrease to the fourth preset humidity value, then step S1707 is executed to maintain the working state of the vacuum pump assembly 8. In step S1702, if the humidity value does not reach the third preset humidity value, then step S1704 is executed to maintain the working state of the vacuum pump assembly 8.

[0201] By controlling the working state of the vacuum pump assembly 8, the humidity value inside the refrigeration drawer 11 is controlled, thereby controlling the condensation inside the refrigeration drawer 11, preventing condensation from occurring inside the refrigeration drawer 11, and improving the refrigeration effect.

[0202] In the above embodiment, the refrigerator includes a cabinet 100 having a top and a bottom arranged along its length. The cabinet 100 includes an outer shell 110 and an inner liner 120. The inner liner 120 is disposed inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110. The installation space is used to form an insulation layer. The interior of the inner liner 120 forms a refrigerator compartment 11, a freezer compartment 12, and a crisper drawer 11. The refrigerator also includes a door 2 for opening and closing the refrigerator compartment 11, a controlled atmosphere film assembly disposed at the top of the refrigerator compartment 11, a vacuum pump assembly 8 disposed in the compressor compartment 13, and a piping assembly 7 for connecting the vacuum pump assembly 8 and the controlled atmosphere film assembly. The vacuum pump assembly 8 is used to extract air from the refrigerator compartment 11 and / or the crisper drawer 11. One end of the piping assembly 7 is connected to the vacuum pump assembly. The other end of the piping assembly 7 is connected to the controlled atmosphere membrane assembly via an insulation layer. The piping assembly 7 provides a flow path 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 crisper drawer 11 and discharges the extracted gas to other compartments or the outside of the cabinet 100 to reduce the pressure inside the crisper drawer 11. Air from the refrigerator compartment 11 enters the crisper drawer 11 through the flow gap to form at least an airflow circulation path between the refrigerator compartment 11, the crisper drawer 11, the vacuum pump assembly 8, and the outside of the cabinet 100, so as to discharge the moisture inside the crisper drawer 11 through airflow circulation. By removing the moisture in the air inside the crisper drawer 11 through airflow circulation, the humidity inside the crisper drawer 11 is effectively reduced. This helps the crisper drawer 11 preserve perishable foods such as meat and seafood, improving the refrigerator's food preservation capabilities.

[0203] During the process of fresh air deoxygenation in the refrigerator, outdoor bacteria are introduced. At the same time, some bacteria and odors are also generated during food storage, which will affect the storage effect of the refrigerator compartment 1 or the crisper drawer 11. The introduced bacteria can include airborne bacteria, Alcaligenes myxobolus, Alcaligenes-like bacteria, Achromobacterium spp., Aerobacterium spp., Lactobacillus spp., Leuconostoc spp., and other bacteria contained in the air.

[0204] At the same time, the process of reducing oxygen levels in fresh air can lead to cross-contamination between rooms.

[0205] To address the aforementioned issues, in some embodiments of this application, the refrigerator is further provided with a sterilization module, which can be installed inside the refrigerator compartment 1. The sterilization module installed inside the refrigerator compartment 1 is defined as the first sterilization module.

[0206] For example, the first sterilization module can be configured as an ion generator, which generates ion clusters and / or ozone to remove bacteria within the chamber 100. Generally, the ion types in the ion cluster can include strong oxidizing ions, positive ions, and negative ions. For example, strong oxidizing ions include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), and ground-state oxygen (O2). The bacteria in the cabinet 100 include airborne bacteria in the refrigerator compartment 1, bacteria attached to the inner wall of the refrigerator compartment 1, and bacteria attached to the food.

[0207] During the process of air coming into contact with ion clusters, ions can adsorb and decompose odor molecules and airborne bacteria in the air. At the same time, ions will flow into the refrigerator compartment 1 with the airflow, removing bacteria attached to the inner wall of the refrigerator compartment 1 or the surface of the food.

[0208] It is known that during the vacuum pump assembly 8's air extraction process, the air in the refrigerator compartment 1 will be extracted, and the ion clusters in the air will enter the first pipeline assembly with the airflow to remove the attached bacteria and airborne bacteria inside the first pipeline assembly.

[0209] In some embodiments of this example, the refrigerator also includes a high-voltage power supply, which provides a high-voltage voltage to the ion generator to discharge and form an ion cluster for sterilization inside the refrigerator. In this embodiment, the ion concentration can be controlled by controlling the discharge rules of the high-voltage power supply.

[0210] In some implementations of this embodiment, reference is made to Figure 23-32 The ion generating device includes a housing 31, and the housing 31 is provided with a accommodating space 35 and an inlet 32 ​​and an outlet 33 communicating with the accommodating space 35.

[0211] The device for generating ion clusters is installed within the accommodating space 35. After the ion clusters are generated, the airflow in the refrigerator compartment 1 or the fresh food drawer 11 enters the accommodating space 35 through the inlet 32. After reacting with the ion clusters, the airflow flows back to the refrigerator compartment 1 or the fresh food drawer 11 through the outlet 33. At the same time, the generated ion clusters diffuse into the refrigerator compartment 1 or the fresh food drawer 11 through the inlet 32 ​​and the outlet 33.

[0212] In some implementations of this embodiment, reference is made to Figure 25-26 The ion generating device includes a strong oxidizing ion generating unit 362, which uses needle tip corona discharge to generate a large amount of strongly oxidizing active substances and ions. These strongly oxidizing active substances include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), and ground-state oxygen (O2). The ozone (O3) concentration is effectively killed and removed by diffusing into the interior of the refrigerator compartment 1, the inner walls of the crisper drawer 11, and the food surface. Simultaneously, the ozone (O3) concentration can be controlled by applying a discharge control rule, keeping it below the user's perception threshold. For example, the discharge control rule is the relationship between the applied voltage and the ozone concentration.

[0213] In some implementations, the controller 6 uses discharge control rules to control the concentration of the generated strong oxidizing ions, keeping the concentration below a set threshold. This set threshold is set according to the user's perception level. This allows for sterilization 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 inside the cabinet 100.

[0214] In some implementations, refer to Figure 27 , 32 The strong oxidizing ion generating unit 362 includes an emitting electrode structure 3622, one end of which is configured as a needle tip structure 3621. The emitting electrode structure 3622 is used to utilize the high voltage provided by the high voltage power supply to cause the needle tip structure 3621 to corona discharge and form a strong oxidizing ion cluster. Specifically, there are two or more needle tips 3621.

[0215] In some implementations, refer to Figure 25 The first sterilization module also includes a built-in fan 34, which is located inside the housing 31 and on one side of the strong oxidizing ion generating unit 362. When sterilization is performed, the built-in fan 34 is turned on to promote airflow circulation in the space and accelerate the sterilization efficiency.

[0216] In some embodiments of this application, the transmitting electrode structure 3622 further includes a counter electrode and a support, wherein the support is detachably fixed within the accommodating space 35 and the counter electrode is mounted on the support.

[0217] 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.

[0218] A needle tip structure 3621 protrudes from the side of the high voltage electrode facing the collecting electrode. The needle tip structure 3621 is used to discharge in the opposite electrode of the strong oxidizing ion generating unit 362.

[0219] For example, when the high-voltage electrode is connected to a negative high voltage, a large number of negative ions are generated by discharge at the needle tip structure 3621. These negative ions come into contact with bacteria and dust in the air, thereby achieving a bactericidal effect. Specifically, the opposing electrode is grounded or the relative voltage between the opposing electrode and 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 -5kV.

[0220] In some embodiments of this example, the ion generating device further includes a positive and negative ion generating unit 361, which can efficiently and quickly remove airborne bacteria in the refrigerator.

[0221] Reference Figure 28 The positive and negative ion generating unit 361 further includes a positive electrode 3611 and a negative electrode 3612 disposed 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 housing 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 clusters and negative ion clusters.

[0222] In some embodiments, the positive and negative ion generating unit 361 uses a carbon brush as a discharge electrode. Of course, the technical solution in this application can be applied to other electrodes, such as a needle-shaped discharge electrode. The DC negative high voltage range of the negative high voltage carbon brush electrode is -2 to -9 kV, and the DC positive high voltage range of the positive high voltage carbon brush electrode is 2 to 9 kV. It should be noted that the positions of the positive and negative high voltage electrodes are not limited in the figure, and the positions of the positive and negative high voltage electrodes can be interchanged.

[0223] In some embodiments of this application, in order to address the bacteria introduced into the refrigerator compartment 1 due to the fresh air deoxygenation function, the controller 6 is configured to manually or automatically activate the first sterilization module after the fresh air deoxygenation function is completed. The first sterilization module generates ion clusters to sterilize the air, the inner wall of the refrigerator compartment 1, and the food, thereby improving the food preservation conditions in the refrigerator compartment 1.

[0224] In some embodiments of this example, the first sterilization module can start working after or when the vacuum pump assembly 8 is turned off, in order to solve the problem of bacteria outside the refrigerator 100 introduced into the refrigerator compartment 1 during the fresh air deoxygenation process.

[0225] It is important to know that during the normal storage process in the refrigerator compartment 1, the ion generator will be turned on periodically to sterilize the refrigerator compartment 1, in order to remove attached bacteria and bacteria in the refrigerator compartment 1 and extend the food preservation time.

[0226] In some implementations, the start and stop of the first sterilization module can be set by a preset working time. Specifically, when the working time reaches the preset working time, the first sterilization module is turned off.

[0227] In some implementations, the operating time of the first sterilization module can also be controlled by detecting the bacterial content in the refrigerator compartment 1. When the bacterial content in the refrigerator compartment 1 is a first preset bacterial content, the first sterilization module is turned off; when the bacterial content in the refrigerator compartment 1 is not lower than the first preset bacterial content, the first sterilization module is kept running.

[0228] Reference Figure 18 Taking the refrigerator compartment 1 as an example, this paper explains the control logic of the sterilization action of the refrigerator after the fresh air is de-oxygenated.

[0229] Vacuum pump assembly 8 evacuates air from refrigerator compartment 1 (step S1801); Determine whether the oxygen content detected by the oxygen concentration detection device in the cold storage compartment 1 reaches the preset oxygen content (step S1802). In step S1802, if the oxygen content in the cold storage compartment 1 reaches the preset oxygen content, then 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 generate ion clusters using the ion generator. Determine whether the working time of the ion generator has reached the first preset working time (step S1805). In step S1805, if the working time reaches the first preset working time, then step S1806 is executed to turn off the high voltage power supply and shut down the ion generator. In step S1805, if the working time has not reached the first preset working time, then step S1805 is executed.

[0230] In step S1802, if the oxygen content in the cold storage compartment 1 does not reach the preset oxygen content, then step S1802 is executed.

[0231] In step S1805, the first sterilization module can also be shut down by determining the bacterial content in the cold storage compartment 1.

[0232] In some embodiments of this example, during the sterilization process of the refrigerator compartment 1, it is necessary to detect whether the door is open. When the door is open, the first sterilization module is closed. After a certain period of time, when the door is detected to be closed again, the first sterilization module is turned on again to complete the sterilization of the refrigerator compartment 1.

[0233] In some implementations, the door opening time can also be collected. When the door opening time reaches the preset opening time, the first sterilization module is turned off. When the door opening time does not reach the preset opening time and the first sterilization module is in the on state, the first sterilization module is kept on.

[0234] The above settings prevent the first sterilization module from frequently starting and stopping.

[0235] In some embodiments of this application, a sterilization module is also provided in the refrigerator's fresh-keeping drawer 11. The sterilization module provided in the fresh-keeping drawer 11 is defined as a second sterilization module, which is used to remove airborne bacteria in the fresh-keeping drawer 11, bacteria attached to the inner wall of the fresh-keeping drawer 11, bacteria attached to food, etc.

[0236] 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 they are in.

[0237] In some embodiments, the first sterilization module can release at least ozone and utilize at least a portion of the ozone for sterilization and deodorization. This is to meet the daily sterilization needs of the refrigerator compartment 1 and address the bacterial contamination issues arising from the fresh air deoxygenation process in the refrigerator compartment 1.

[0238] In some embodiments, the second sterilization module can release at least ozone and utilize at least a portion of the ozone for sterilization and deodorization. This is to address the daily sterilization needs of the food storage drawer 11 and the bacterial contamination issues arising from the fresh air deoxygenation process of the food storage drawer 11.

[0239] It is known that during the vacuum pump assembly 8's air extraction process, the air inside the food storage drawer 11 will be extracted, and the ion clusters in the air will enter the second pipeline assembly with the airflow to remove the attached bacteria and airborne bacteria inside the second pipeline assembly.

[0240] In some embodiments of this application, in order to address the bacteria introduced into the food preservation drawer 11 due to the fresh air deoxygenation function, the controller 6 is configured to manually or automatically activate the second sterilization module after the fresh air deoxygenation function is completed. The second sterilization module generates ion clusters to sterilize the air, the inner wall of the food preservation drawer 11, and the food inside, thereby improving the food preservation conditions inside the food preservation drawer 11.

[0241] In some embodiments of this example, the second sterilization module can start working after or when the vacuum pump assembly 8 is turned off, in order to solve the problem of bacteria introduced into the cabinet 100 or the refrigerator 1 by the fresh air drawer 11 during the fresh air deoxygenation process.

[0242] It is important to know that during the normal storage process of the food preservation drawer 11, the second sterilization module will be activated periodically to sterilize the food preservation drawer 11, in order to remove attached bacteria and airborne bacteria inside the food preservation drawer 11 and extend the food preservation time.

[0243] In some implementations, 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.

[0244] In some implementations, the operating time of the second sterilization module can also be controlled by detecting the bacterial content in the preservation drawer 11. When the bacterial content in the preservation drawer 11 is lower than the second preset bacterial content, the second sterilization module is turned off; when the bacterial content in the preservation drawer 11 is not lower than the second preset bacterial content, the second sterilization module continues to operate.

[0245] It should be noted that the second preset bacterial content is a preset bacterial content suitable for food preservation in the freshness drawer 11, taking into account all aspects of the performance of the freshness drawer 11. The first preset bacterial content is a preset bacterial content suitable for food preservation in the refrigerator compartment 1, taking into account all aspects of the performance of the refrigerator compartment 1.

[0246] Reference Figure 19 Taking the fresh food drawer 11 as an example, this paper explains the control logic of the sterilization action of the refrigerator after the fresh air is de-oxygenated.

[0247] The vacuum pump assembly 8 evacuates the air from the food storage drawer 11 (step S1901); Determine whether the oxygen content detected by the oxygen concentration detection device in the food preservation drawer 11 reaches the corresponding preset oxygen content (step S1902). In step S1902, if the oxygen content in the preservation drawer 11 reaches the preset oxygen content, then 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 generate ion clusters using the ion generator. Determine whether the working time of the ion generator has reached the second preset working time (step S1905). In step S1905, if the working time reaches the second preset working time, then step S1906 is executed to turn off the high voltage power supply and shut down the ion generator. In step S1905, if the working time has not reached the second preset working time, then step S1905 is executed.

[0248] In step S1902, if the oxygen content in the preservation drawer 11 does not reach the preset oxygen content, then step S1902 is executed.

[0249] In step S1905, the second sterilization module can also be shut down by judging the bacterial content in the preservation drawer 11.

[0250] In some embodiments of this example, during the sterilization process of the food preservation drawer 11, it is necessary to detect whether the food preservation drawer 11 is open. When the food preservation drawer 11 is open, the second sterilization module is closed. When the food preservation drawer 11 is detected to be closed again, the second sterilization module is turned on again to complete the sterilization of the food preservation drawer 11.

[0251] In some implementations, the opening time of the fresh food drawer 11 can also be collected. When the opening time of the fresh food drawer 11 reaches the preset drawer time, the second sterilization module is turned off. When the opening time of the fresh food 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.

[0252] The above settings prevent the second sterilization module from frequently starting and stopping.

[0253] In some implementations, after the vacuum pump assembly 8 is turned off, the high-voltage power supply is turned on, and the positive and negative ion generating unit 361 releases positive and negative ion clusters to remove bacteria introduced outside the cabinet 100 or inside the refrigerator 1 due to gas replacement during the fresh air deoxygenation process.

[0254] By activating only the positive and negative ion generating units 361 after the fresh air oxygenation is reduced, airborne bacteria in the room undergoing fresh air oxygenation are removed, achieving precise sterilization while reducing unnecessary energy consumption.

[0255] In some embodiments of this example, in addition to being turned on by the closing action of the vacuum pump assembly 8, the first sterilization module can also be turned on during the fresh air deoxygenation process by judging the bacterial content in the cold storage compartment 1.

[0256] Specifically, during the fresh air deoxygenation process in refrigerator compartment 1, when the bacterial content in refrigerator compartment 1 reaches the third preset bacterial content, the first sterilization module is activated. It can be understood that the third preset bacterial content is set as the bacterial content at which sterilization is required in refrigerator compartment 1.

[0257] Similarly, in some implementations, in addition to being turned on by the closing action of the vacuum pump assembly 8, the second sterilization module can also be turned on by judging the bacterial content in the fresh air drawer 11 during the process of fresh air deoxygenation in the fresh air drawer 11.

[0258] Specifically, during the fresh air deoxygenation process in the food storage drawer 11, when the bacterial content inside the drawer reaches the fourth preset bacterial content, the second sterilization module is activated. It can be seen that the third preset bacterial content is set to the bacterial content at which sterilization is required in the food storage drawer 11.

[0259] Reference Figure 20 Taking the cold storage room 1 as an example, the control logic of the first sterilization module in the process of fresh air deoxygenation in the cold storage room 1 is explained.

[0260] The vacuum pump assembly 8 evacuates the cold storage compartment 1 (step S2001); Determine whether the bacterial content in the cold storage compartment 1 has reached the third preset bacterial content (step S2002). In step S2002, if the bacterial content in the cold storage compartment 1 reaches the third preset bacterial content, then step S2003 is executed, the high-voltage power supply is turned on, and the first sterilization module releases ion clusters. In step S2002, if the bacterial content in the refrigerator compartment 1 does not reach the third preset bacterial content, then step S2002 is executed.

[0261] Through the above steps, the sterilization module is activated not only to detect bacterial content after the fresh air deoxygenation action is completed, but also during the fresh air deoxygenation process, thus preventing bacteria in the refrigerator compartment 1 from contaminating other components during the fresh air deoxygenation process.

[0262] It is important to know that the food storage drawer 11 can also be tested for bacterial content during the fresh air deoxygenation operation to prevent bacteria in the food storage drawer 11 from contaminating other components.

[0263] In some embodiments of this application, the refrigerator includes a vacuum pump assembly 8, a piping assembly, and a modified atmosphere film assembly connected to the refrigerator compartment 1 or the fresh food drawer 11. This assembly enables fresh air exchange in the refrigerator compartment 1 while simultaneously reducing the oxygen content of the air inside the refrigerator compartment 1, and also enables fresh air exchange in the fresh food drawer 11 while reducing the oxygen content of the air inside the fresh food drawer 11. The refrigerator also includes a sterilization module, which is activated after the fresh air deoxygenation process to remove bacteria introduced from outside the cabinet 100 or inside the refrigerator compartment 1 due to airflow displacement, thereby reducing the bacterial content in the refrigerator compartment 1 or the fresh food drawer 11 and improving the storage quality of the refrigerator compartment 1 or the fresh food drawer 11.

[0264] In some embodiments of this application, to prevent bacteria in the refrigerator compartment 1 from entering the first piping assembly, vacuum pump assembly 8, or other compartments through airflow circulation and causing cross-contamination, the sterilization function is activated before the fresh air deoxygenation function is activated.

[0265] 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 ion clusters to remove attached bacteria and airborne bacteria in the refrigerator compartment 1, thereby avoiding contamination of the first modified atmosphere film assembly 101, the first pipeline assembly and the vacuum pump assembly 8 during the gas replacement process, avoiding cross-contamination between compartments, and extending the service life of the modified atmosphere film assembly and the refrigerator.

[0266] In some implementations, after the vacuum pump assembly 8 is turned off, the first sterilization module can continue to operate for a period of time to ensure the sterilization effect in the refrigerator compartment 1.

[0267] In some embodiments of this example, during the sterilization process of the refrigerator compartment 1, it is necessary to detect whether the door is open. When the door is open, the first sterilization module is closed. After a certain period of time, when the door is detected to be closed again, the first sterilization module is turned on again to complete the sterilization of the refrigerator compartment 1.

[0268] In some implementations, the door opening time can also be collected. When the door opening time reaches the preset opening time, the first sterilization module is turned off. When the door opening time does not reach the preset opening time and the first sterilization module is in the on state, the first sterilization module is kept on.

[0269] In some embodiments of this example, when sterilizing the refrigerator compartment 1 and performing fresh air deoxygenation, it is necessary to detect whether the door is open. When the door is open, the first sterilization module and the vacuum pump assembly 8 are turned off. After a certain period of time, when the door is detected to be closed again, the first sterilization module is turned on again to complete the sterilization of the refrigerator compartment 1, and the vacuum pump assembly 8 is turned on to evacuate the refrigerator compartment 1.

[0270] In some implementations, the door opening time can also be collected. When the door opening time reaches the preset opening time, the first sterilization module and vacuum pump assembly 8 are turned off. When the door opening time does not reach the preset opening time and the first sterilization module is in the on state, the first sterilization module and vacuum pump assembly 8 are kept on.

[0271] The above settings prevent the first sterilization module from frequently starting and stopping.

[0272] Reference Figure 21 Taking the refrigerator compartment 1 as an example, this paper explains the control logic of the sterilization work of the refrigerator before the fresh air is de-oxygenated.

[0273] A control command to start working of vacuum pump assembly 8 is received (step S2101). When the high voltage is turned on, the first sterilization module generates ion clusters (step S2102). Vacuum pump assembly 8 evacuates air from the refrigerator compartment 1 (step S2103). Determine whether the oxygen content detected by the oxygen concentration detection device in the cold storage compartment 1 reaches the preset oxygen content (step S2104). In step S2104, if the oxygen content in the cold storage compartment 1 reaches the preset oxygen content, then step S2105 is executed to shut down the vacuum pump assembly 8. Determine whether the vacuum pump assembly 8 has reached the preset shutdown time (step S2106). In step S2106, if the vacuum pump assembly 8 reaches the preset shutdown time, then step S2107 is executed to turn off the high voltage power supply and stop the first sterilization module from generating ion clusters. In step S2106, if the closing time of the vacuum pump assembly 8 does not reach the preset closing time, then step S2106 is executed. In step S2104, if the oxygen content in the refrigerator compartment 1 does not reach the preset oxygen content, then step S2104 is executed.

[0274] In some implementations, the first sterilization module can be allowed to operate for a period of time before the fresh air deoxygenation action is performed, that is, the vacuum pump assembly 8 is turned on again, in order to ensure the sterilization effect of the first sterilization module and reduce cross-contamination of bacteria.

[0275] In some embodiments of this example, the first sterilization module is located near the first modified atmosphere membrane assembly 101 to improve the efficiency of sterilizing the extracted airflow.

[0276] In some embodiments of this application, to prevent bacteria in the food storage drawer 11 from entering the second piping assembly, vacuum pump assembly 8, or other compartments through airflow circulation and causing cross-contamination, the sterilization function is activated before the fresh air deoxygenation function is activated.

[0277] 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 ion clusters to remove attached bacteria and airborne bacteria in the freshness drawer 11, thereby avoiding contamination of the second modified atmosphere film assembly 102, the second pipeline assembly and the vacuum pump assembly 8 during the gas replacement process, avoiding cross-contamination between compartments, and extending the service life of the modified atmosphere film assembly and the refrigerator.

[0278] In some implementations, after the vacuum pump assembly 8 is turned off, the second sterilization module can continue to operate for a period of time to ensure the sterilization effect inside the food preservation drawer 11.

[0279] In some embodiments of this example, during the sterilization process of the food preservation drawer 11, it is necessary to detect whether the food preservation drawer 11 is open. When the food preservation drawer 11 is open, the second sterilization module is turned off. After a certain period of time, when the food preservation drawer 11 is detected to be closed again, the second sterilization module is turned on again to complete the sterilization of the food preservation drawer 11.

[0280] In some implementations, the opening time of the fresh food drawer 11 can also be collected. When the opening time of the fresh food drawer 11 reaches the preset drawer time, the second sterilization module is turned off. When the opening time of the fresh food 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.

[0281] In some embodiments of this example, when sterilizing the food storage drawer 11 and performing fresh air deoxygenation, it is necessary to detect whether the food storage drawer 11 is open. When the food storage drawer 11 is open, the second sterilization module and the vacuum pump assembly 8 are turned off. After a certain period of time, when the food storage drawer 11 is detected to be closed again, the second sterilization module is turned on again to complete the sterilization of the food storage drawer 11, and the vacuum pump assembly 8 is turned on to evacuate the food storage drawer 11.

[0282] In some implementations, the opening time of the fresh food drawer 11 can also be collected. When the opening time of the fresh food 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 food 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.

[0283] The above settings prevent the second sterilization module from frequently starting and stopping.

[0284] Reference Figure 22 Taking the fresh food drawer 11 as an example, this paper explains the control logic of the sterilization work of the refrigerator before the fresh air is de-oxygenated.

[0285] A control command to start working of vacuum pump assembly 8 is received (step S2201). When the high voltage is turned on, the second sterilization module generates ion clusters (step S2202). Vacuum pump assembly 8 evacuates air from food storage drawer 11 (step S2203). Determine whether the oxygen content detected by the oxygen concentration detection device in the fresh food drawer 11 reaches the preset oxygen content (step S2204). In step S2204, if the oxygen content in the preservation drawer 11 reaches the preset oxygen content, then step S2205 is executed to turn off the vacuum pump assembly 8. Determine whether the vacuum pump assembly 8 has reached the preset shutdown time (step S2206). In step S2206, if the vacuum pump assembly 8 reaches the preset shutdown time, then step S2207 is executed to turn off the high voltage power supply and stop the second sterilization module from generating ion clusters. In step S2206, if the closing time of the vacuum pump assembly 8 does not reach the preset closing time, then step S2206 is executed. In step S2204, if the oxygen content in the preservation drawer 11 does not reach the preset oxygen content, then step S2204 is executed.

[0286] In some implementations, the second sterilization module can be allowed to operate for a period of time before the fresh air deoxygenation action is performed, that is, the vacuum pump assembly 8 is turned on again, in order to ensure the sterilization effect of the second sterilization module and reduce cross-contamination of bacteria.

[0287] In some embodiments of this example, the second sterilization module is located near the second modified atmosphere membrane assembly 102 to improve the efficiency of sterilizing the extracted airflow.

[0288] In some embodiments of this example, the sterilization module may also be configured as an ultraviolet lamp tube, which sterilizes the air by emitting ultraviolet light.

[0289] In some embodiments of this application, the refrigerator further includes an odor-removing module, which is used to remove odor molecules from the air. The odor-removing module can be a photocatalyst, activated carbon, etc.

[0290] In some implementations, the odor detection device is used to detect the concentration of odors in the space to serve as a basis for the operation of the odor removal module.

[0291] In some embodiments of this example, when the odor concentration detected by the odor detection device reaches a first preset range, it is determined that the odor concentration inside the enclosure 100 is high and needs to be removed. At this time, the odor removal module is activated to prevent odor cross-contamination due to airflow during the fresh air deoxygenation process.

[0292] In some implementations, when the odor concentration detected by the odor detection device reaches the end-of-operation condition, it is determined that the odor concentration inside the enclosure 100 is within the normal range, and the odor removal module is turned off.

[0293] In some embodiments of this example, the odor removal module further includes a photocatalytic unit 363, which is disposed on the side of the built-in fan 34 near the outlet 33. In this application, DBD (dielectric barrier) discharge is used to couple the photocatalyst to achieve low-temperature plasma discharge synergistic photocatalytic / metal oxide catalytic function, thereby achieving a fast and efficient odor removal effect.

[0294] In the technical solution of this application, the main function of the photocatalytic unit 363 is to neutralize odors. A high-voltage electric field excites the photocatalyst to generate electrons and holes. After the electrons migrate from the valence band to the conduction band, they react with O2. The reaction formula is as follows:

[0295] The valence band hole reacts with H2O in the air, and the reaction equation is as follows:

[0296] and All of them have strong oxidizing properties. The built-in fan 34 draws in air from the cabinet 100, and the odor molecules in the air are oxidized and decomposed at the photocatalytic unit 363, which plays a powerful and fast role in deodorizing.

[0297] Reference Figure 29 The photocatalytic unit 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 to each other on both sides 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 disposed on the side of the built-in fan 34 near the outlet 33. Multiple through holes are formed on the substrate plate 3631 along the airflow direction to increase the airflow rate and increase the surface area of ​​the photocatalyst layer 3634, thereby improving the odor removal efficiency. The air inside the cabinet 100 flows out from the outlet 33 of the built-in fan 34 under the action of the built-in fan 34, flows through the photocatalyst layer 3634, and then flows back to the cabinet 100 through the outlet 33.

[0298] The photocatalytic unit 363 uses the high voltage electric field generated by the first electrode plate 3632 and the second electrode plate 3633 to excite the photocatalytic layer 3634 to generate strong oxidizing molecules to decompose odor molecules in the box 100.

[0299] In some embodiments, the substrate 3631 is configured as a porous ceramic, and a photocatalyst is coated or impregnated on the surface of the porous ceramic to achieve a low-temperature plasma discharge synergistic photocatalytic / metal oxide catalytic function. It should be noted that the photocatalyst here can be TiO2 doped with Cu or Mn oxides.

[0300] In some implementations, refer to Figure 30 The first electrode plate 3632 and the second electrode plate 3633 are configured as plate-wire mesh electrodes, which can effectively and occasionally excite the photocatalyst while also effectively reducing wind resistance. It should be noted that the two plate-wire electrodes can be interchanged.

[0301] In some implementations, refer to Figure 31Alternatively, the first electrode plate 3632 and the second electrode plate 3633 can be configured as plate-to-plate mesh opposing electrodes.

[0302] In some embodiments not shown, the first electrode plate 3632 and the second electrode plate 3633 can be configured as plate-line opposing electrodes, and plate electrodes or line electrodes can be provided at the upper and lower positions of the substrate plate 3631.

[0303] In some embodiments not shown, the first electrode plate 3632 and the second electrode plate 3633 can be configured as plate-plate opposing electrodes, and plate electrodes or wire electrodes can be provided at the upper and lower positions of the substrate plate 3631.

[0304] In this embodiment, the discharge parameters are as follows: the voltages on the two electrodes are two positive and negative high voltages with the same frequency and amplitude but opposite phase, both cosine pulses. The peak value range of the positive cosine high voltage is 1.5~2.8kV, and the corresponding peak value range of the negative cosine high voltage is -1.5~-2.8kV. It should be noted that the distance between the two electrodes corresponding to the above voltages is 20mm.

[0305] Alternatively, the electrode voltage can be a cosine pulse negative high voltage (cosine negative high voltage peak range: -2.5~-4.5kV) or a cosine pulse positive high voltage (cosine positive high voltage peak range: 2.5~4.5kV). In this case, the relative voltage between the opposing electrode and the high voltage electrode is "0". It should be noted that the distance between the two electrodes corresponding to the above voltages is 20mm.

[0306] In some embodiments, reference is made to Figure 8 The distance between the first electrode plate 3632 and the substrate plate 3631 is 0.1mm-5mm, and similarly, the distance between the second electrode plate 3633 and the substrate plate 3631 is 0.1mm-5mm.

[0307] Based on the spacing between the two electrodes, the DBD discharge voltage is relatively low, which can efficiently excite the photocatalyst without producing ozone or producing ozone at a low level below the user's perception threshold. Therefore, the photocatalytic unit 363, which uses DBD discharge to couple the photocatalyst, can operate continuously, accelerating the deodorization speed and improving the deodorization efficiency. Unlike ordinary deodorization modules, it does not require setting up an operating control program to reduce the discharge time and frequency in order to control ozone at a low concentration, which would lead to a decrease in the deodorization speed.

[0308] In some embodiments of this application, 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, use the vacuum pump assembly 8 to evacuate the refrigerator compartment 1, and promote gas circulation inside and outside the refrigerator compartment 1; turn on the high voltage power supply, and the photocatalytic unit 363 releases strong oxidizing molecules.

[0309] Through the above steps, the odor removal module (exemplarily, the photocatalytic unit 363 in this application) and the fresh air deoxygenation module work simultaneously. The odor removal module removes odor molecules from the air, and the fresh air deoxygenation module replaces the gas, thereby improving the odor removal efficiency of the refrigerator compartment 1. Simultaneously, the odor removal module effectively prevents cross-contamination of odors between the first modified atmosphere membrane assembly 101, the first piping assembly, the vacuum pump assembly 8, and the refrigerator compartment 1.

[0310] In some embodiments of this application, 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, use the vacuum pump assembly 8 to evacuate the fresh food drawer 11, and promote gas circulation inside and outside the fresh food drawer 11; turn on the high voltage power supply, and the photocatalytic unit 363 releases strong oxidizing molecules.

[0311] Through the above steps, the odor removal module (exemplarily, the photocatalytic unit 363 in this application) and the fresh air deoxygenation module work simultaneously. The odor removal module removes odor molecules from the air, and the fresh air deoxygenation module replaces the gas, thereby improving the odor removal efficiency of the refrigerator drawer 11. Simultaneously, the odor removal module effectively prevents cross-contamination of odors between the first modified atmosphere membrane assembly 101, the first piping assembly, the vacuum pump assembly 8, and the refrigerator compartment 1.

[0312] Reference Figure 23 The deodorization control logic of the refrigerator is explained using the refrigerator compartment 1 as an example.

[0313] Determine whether the refrigerator compartment is closed (step S2303); In step S2303, if the refrigerator compartment is in the closed state, then step S2301 is executed; In step S2303, if the refrigerator compartment is not closed, then step S2304 is executed, and the refrigerator alarms or the vacuum pump assembly performs evacuation in a preset working state.

[0314] Determine whether the odor concentration detected by the first odor detection device reaches the first preset odor concentration threshold (step S2301). In step S2301, if the odor concentration reaches the first preset odor concentration threshold, then step S2302 is executed to turn on the vacuum pump assembly 8 and turn on the high voltage power supply. In step S2301, if the odor concentration does not reach the first preset odor concentration threshold, then step S2301 is executed.

[0315] It should be noted that the first preset odor concentration threshold mentioned above is the boundary at which odor removal should be carried out, and can be adjusted according to user needs.

[0316] It should be noted that the fresh air deoxygenation process, sterilization process, and odor removal process in this application are set in a relatively enclosed space to improve the efficiency of fresh air exchange, sterilization, and odor removal. Of course, it is understood that briefly opening the enclosed space does not require switching of component actions, avoiding excessively frequent component switching and affecting the lifespan of the components.

[0317] In some implementations, the operating state of one or a combination of the vacuum pump assembly 8 and the photocatalytic unit 363 can be controlled by the concentration of the odor.

[0318] In some embodiments of this example, the odor-eliminating module and the sterilization module can be integrated into the same housing 31.

[0319] In some embodiments of this example, during the process of fresh air deoxygenation, if the odor concentration in the room undergoing fresh air deoxygenation is detected to reach the corresponding preset odor concentration threshold, the working state of the vacuum pump assembly 8 is maintained or the working frequency of the vacuum pump assembly 8 is increased, and the high-voltage power supply is turned on to make the purification module generate strong oxidizing ion clusters to adsorb odor molecules in the air.

[0320] In some embodiments of this example, before the fresh air deoxygenation process in the chamber, an odor removal process is performed by turning on the high-voltage power supply to generate strong oxidizing ion clusters in the purification module. This odor removal process before the fresh air deoxygenation process prevents odor cross-contamination between chambers or components.

[0321] In some embodiments of this application, the sterilization module and the deodorization module can be integrated together to form a sterilization and deodorization module, which generates ion clusters and ozone. Alternatively, the functions of the sterilization module and the deodorization module can be separated to achieve a refined division of labor.

[0322] It should be noted that when using the sterilization and deodorization modules, the working logic of the sterilization and deodorization modules can be referenced from that of the separate sterilization and deodorization modules.

[0323] The odor removal module also includes a cold catalyst catalytic unit 364, which is located on the side of the internal air duct near the outlet 33. Specifically, the cold catalyst catalytic unit 364 is located on the side of the photocatalytic unit 363 near 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 generating unit 362.

[0324] The cold catalyst catalytic unit 364 includes a cold catalyst substrate with multiple through holes. The outer surface of the cold catalyst substrate is coated with a cold catalyst layer. Airflow within the housing 31 flows through the cold catalyst layer and then returns to the interior of the enclosure 100 via the outlet 33. Specifically, the airflow within the housing 31, after being reacted with strong oxidizing ions, positive ions, and negative ions, passes through the cold catalyst layer for further cleaning, ensuring a cleaning effect. For example, the cold catalyst substrate is made of porous ceramic, and the surface of the porous ceramic is coated with a cold catalyst.

[0325] In some embodiments not shown in this example, the refrigerator also includes an ethylene removal unit for removing ethylene from the interior of the cabinet 100. The purpose of this is that ethylene is an endogenous ripening physiologically active factor released by climacteric fruits and vegetables during postharvest ripening, and reducing the ethylene content in the storage environment can effectively prolong the freshness of fruits and vegetables.

[0326] In some embodiments of this application, a catalytic deodorization module is provided at the exhaust port of the vacuum pump assembly 8, which can decompose odor substances. For example, substances such as methanethiol and volatile amines are decomposed into carbon dioxide, water, etc.

[0327] It is known that the catalytic deodorization module can be set as a regular catalyst or an electro-excited synergistic catalytic module.

[0328] For example, it can be configured as a photocatalyst and an ion catalyst.

[0329] By installing a catalytic deodorization module at the exhaust port of the vacuum pump assembly 8, bacteria or odors that were not completely 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.

[0330] In some embodiments of this application, a sterilization and deodorization module is provided on one side of the modified atmosphere membrane assembly to perform sterilization and deodorization operations before or simultaneously with oxygen reduction using the fresh air unit (vacuum pump assembly 8 and modified atmosphere membrane assembly).

[0331] In some embodiments of this application, a refrigerator is proposed, which includes a vacuum pump assembly 8, a piping assembly, and a controlled atmosphere membrane assembly connected to the refrigerator compartment 1 or the fresh food drawer 11. This assembly is used to achieve fresh air exchange in the refrigerator compartment 1 while reducing the oxygen content of the air in the refrigerator compartment 1, and to achieve fresh air exchange in the fresh food drawer 11 while reducing the oxygen content of the air in the fresh food drawer 11. The refrigerator also includes a sterilization module, which is activated before the fresh air deoxygenation action to pre-sterilize the refrigerator compartment 1 or the fresh food drawer 11, preventing bacteria in the refrigerator compartment 1 or the fresh food drawer 11 from circulating and contaminating the controlled atmosphere membrane assembly, the piping assembly, and the vacuum pump assembly 8 with the airflow.

[0332] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A refrigerator, characterized in that, include: A housing, the housing including a top and a bottom disposed along its length, the housing including an outer shell and an inner liner, the inner liner being disposed inside the outer shell; The installation space is located between the inner liner and the outer shell; An insulation layer, located in the installation space, is used to insulate the internal storage space of the box from the outside. The compressor compartment is located at the bottom of the housing; A cold storage compartment, configured to be formed by the inner liner, is used for the cold storage of food. The door, used to open or close the refrigerator compartment; The first flow gap is configured as the gap at the connection between the door and the cabinet when the door closes the refrigerator compartment; A first modified atmosphere membrane assembly is disposed at the top of the cold storage compartment, and the first modified atmosphere membrane assembly has a faster oxygen permeability than nitrogen permeability. A vacuum pump assembly, located within the compressor compartment, is used to evacuate air from the refrigerator compartment; When the vacuum pump assembly is working, the air in the refrigerator compartment is drawn out through the first modified atmosphere membrane assembly; A first sterilization module is disposed in the refrigerator compartment, the first sterilization module generating ion clusters and / or ozone to at least remove bacteria introduced into the refrigerator compartment; The rear air duct is located at the back of the cabinet and connects to the refrigerator compartment and the crisper drawer. The refrigeration fan is located in the back air duct to accelerate the airflow in the back air duct; The controller is configured as follows: The vacuum pump assembly evacuates the cold storage compartment through the first modified atmosphere membrane assembly and discharges the extracted gas to the outside of other compartments or the cabinet, so as to create a pressure difference between the inside and outside of the cold storage compartment; Air outside the box enters the refrigerator compartment through the flow gap to form at least an airflow circulation path between the refrigerator compartment, the vacuum pump assembly, and the outside of the box. The airflow outside the box enters the refrigerator compartment to replace part of the gas inside the refrigerator compartment. During the operation of the vacuum pump assembly and / or the first sterilization module, the refrigeration fan is turned on to accelerate the airflow in the refrigeration compartment; After the vacuum pump assembly is turned off, the first sterilization module is turned on. The first sterilization module generates ion clusters to remove bacteria introduced by the gas entering the refrigerator compartment.

2. The refrigerator according to claim 1, characterized in that, Also includes: A food storage drawer, located in the refrigerator compartment, is used to store food. The food storage drawer includes a drawer shell and a drawer body that can be pulled relative to the drawer shell. The second flow gap is configured as the gap between the openings of the drawer body and the drawer shell after the drawer body and the drawer shell are assembled. The second modified atmosphere membrane assembly is located at the top of the cold storage compartment, and the second modified atmosphere membrane assembly has a faster oxygen permeability than nitrogen permeability. The vacuum pump assembly is also used to extract air from the food preservation drawer through the second modified atmosphere membrane assembly. A second sterilization module is disposed inside the food preservation drawer. The second sterilization module generates ion clusters and / or ozone to at least remove bacteria introduced into the food preservation drawer. The controller is configured as follows: The vacuum pump assembly is controlled to evacuate the fresh-keeping drawer and discharge the extracted gas to other compartments or the outside of the cabinet, so that a pressure difference exists between the fresh-keeping drawer and the refrigerator compartment; The air inside the refrigerator compartment enters the refrigerator compartment through the second flow gap to form an airflow circulation path between the refrigerator compartment, the fresh food drawer, the vacuum pump assembly, and the outside of the cabinet, thereby replacing part of the gas inside the fresh food drawer. After the vacuum pump assembly is turned off, the second sterilization module is turned on. The second sterilization module generates ion clusters to remove bacteria brought by the newly introduced gas in the food preservation drawer.

3. The refrigerator according to claim 1, characterized in that, It also includes a first bacterial detection device, which is located in the refrigerator compartment and is used to detect the bacterial content in the refrigerator compartment; The controller is configured to shut down the first sterilization module when the bacterial content detected by the first bacterial detection device reaches a first preset bacterial content, and otherwise keep the first sterilization module in working state.

4. The refrigerator according to claim 2, characterized in that, During operation of the vacuum pump assembly, the controller is configured to: When the bacterial content in the refrigerator compartment reaches the third preset bacterial content, the first sterilization module is activated; When the bacterial content in the preservation drawer reaches the fourth preset bacterial content, the second sterilization module is activated.

5. The refrigerator according to claim 1, characterized in that, It also includes a door closure detection component, which is used to detect whether the refrigerator compartment is closed; The controller is configured to shut down the first sterilization module when the refrigerator compartment is detected to be open during the operation of the first sterilization module; and to restart the first sterilization module when the refrigerator compartment is detected to be closed again within a certain period of time.

6. The refrigerator according to claim 5, characterized in that, The controller is configured to record the opening time of the refrigerator compartment after it is opened during the operation of the first sterilization module. When the opening time of the refrigerator compartment reaches the preset opening time, the first sterilization module is turned off; If the opening time of the refrigerator compartment has not reached the preset opening time, the first sterilization module remains open.

7. The refrigerator according to any one of claims 1-3, characterized in that, It also includes an odor removal module, which is located in the refrigerator compartment and is used to remove odor molecules in the refrigerator compartment; The controller is configured to activate the vacuum pump assembly when the odor concentration detected by the first odor detection device in the refrigerator reaches a first preset odor concentration threshold, thereby using the vacuum pump assembly to evacuate the refrigerator and accelerate the airflow circulation inside and outside the refrigerator. and / or Turn on the odor removal module to break down odor molecules in the refrigerator compartment.

8. The refrigerator according to claim 2, characterized in that, During the storage of food in the cold storage compartment, the first sterilization module is turned on periodically to sterilize the cold storage compartment; During the storage of food in the preservation drawer, the second sterilization module is activated periodically to sterilize the preservation drawer.

9. The refrigerator according to claim 1 or 2, characterized in that, Also includes: An oxygen concentration detection device is installed in the refrigerator compartment and / or the fresh food drawer to detect the oxygen concentration in the refrigerator compartment and / or the fresh food drawer. The controller is configured to stop the vacuum pump assembly from evacuating the refrigerator compartment when the oxygen concentration in the refrigerator compartment reaches the upper limit of a first required oxygen content range during the process of the vacuum pump assembly evacuating the refrigerator compartment. and / or During the process of the vacuum pump assembly evacuating the food storage drawer, when the oxygen concentration inside the food storage drawer reaches the upper limit of the second required oxygen content range, the vacuum pump assembly stops evacuating the food storage drawer.

10. A refrigerator, characterized in that, include: A housing, the housing including a top and a bottom disposed along its length, the housing including an outer shell and an inner liner, the inner liner being disposed inside the outer shell; The installation space is located between the inner liner and the outer shell; An insulation layer, located in the installation space, is used to insulate the internal storage space of the box from the outside. The compressor compartment is located at the bottom of the housing; A cold storage compartment, configured to be formed by the inner liner, is used for the cold storage of food. The door, used to open or close the refrigerator compartment; A flow gap, which is configured as the gap at the connection between the door and the cabinet when the door closes the refrigerator compartment; A first modified atmosphere membrane assembly is disposed at the top of the cold storage compartment, and the first modified atmosphere membrane assembly has a faster oxygen permeability than nitrogen permeability. A vacuum pump assembly, located within the compressor compartment, is used to evacuate air from the refrigerator compartment; When the vacuum pump assembly is working, the air in the refrigerator compartment is drawn out through the first modified atmosphere membrane assembly; A first sterilization module is disposed in the refrigerator compartment, the first sterilization module generating ion clusters and / or ozone to at least remove bacteria introduced into the refrigerator compartment; The rear air duct is located at the back of the cabinet and connects to the refrigerator compartment and the crisper drawer. The refrigeration fan is located in the back air duct to accelerate the airflow in the back air duct; The controller is configured as follows: The vacuum pump assembly evacuates the cold storage compartment through the first modified atmosphere membrane assembly and discharges the extracted gas to the outside of other compartments or the cabinet, so as to create a pressure difference between the inside and outside of the cold storage compartment; Air outside the box enters the refrigerator compartment through the flow gap to form at least an airflow circulation path between the refrigerator compartment, the vacuum pump assembly, and the outside of the box. The airflow outside the box enters the refrigerator compartment to replace part of the gas inside the refrigerator compartment. During the operation of the vacuum pump assembly and / or the first sterilization module, the refrigeration fan is turned on to accelerate the airflow in the refrigeration compartment; Before shutting down the vacuum pump assembly, the first sterilization module is turned on. The first sterilization module generates ion clusters to remove bacteria introduced by the gas entering the refrigerator compartment.

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