Refrigerator

Abstract

The invention provides a refrigerator which comprises a refrigerator body, a door body, an air adjusting film assembly arranged at the top of a refrigerating chamber, a vacuum pump assembly arranged in a compressor bin and a pipeline assembly used for being connected with the vacuum pump assembly and the air adjusting film assembly. The vacuum pump assembly extracts air from the refrigerating chamber and exhausts the extracted air to the outside of other chambers or the refrigerator body, and air outside the refrigerator body enters the refrigerating chamber through the circulation gap so as to at least form an airflow circulation path outside the refrigerating chamber, the vacuum pump assembly and the refrigerator body; wherein the oxygen content of the gas pumped out by the vacuum pump assembly is at least higher than the oxygen content of the remaining air in the refrigerating chamber within a certain period of time, so that the oxygen content in the refrigerating chamber is reduced, air outside the refrigerator body enters the refrigerating chamber, and the oxygen reduction action is performed on the refrigerating chamber through the vacuum pump assembly, so that the storage of fruit and vegetable food materials in the refrigerating chamber is facilitated; and the food fresh-keeping capability of the refrigerator is improved.

Description

Technical Field

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

[0002] As an indispensable appliance in home life, a refrigerator prevents food from spoiling by lowering the temperature of the storage space. Currently, in order to improve the preservation quality of food, a refrigerator with a vacuum space has been proposed, that is, a refrigerator has a vacuum device and a vacuum space for preserving food.

[0003] However, there are many problems with vacuum space. On the one hand, vacuum space has high requirements for the sealing of its external structure, which increases the demand for technology and increases the cost. On the other hand, long-term vacuum storage will cause some ingredients to have a poor appearance. For example, meat products and contaminated microorganisms will consume residual oxygen and produce carbon dioxide, forming an environment with a high concentration of carbon dioxide, which will cause the appearance of meat to appear purple, resulting in a poor user experience.

[0004] Therefore, based on the above, it is proposed to consider establishing a low-oxygen environment in the cold storage room to store food, and this application is filed. Summary of the invention

[0005] The present application provides a refrigerator, which arranges a vacuum pump assembly in a compressor compartment, and connects the vacuum pump assembly to an atmosphere-controlled membrane assembly arranged on the top of a cold storage chamber through a pipeline, so as to extract oxygen from the cold storage chamber, form an air flow circulation path between the cold storage chamber, the vacuum pump assembly, and the outside of the box, and reduce the oxygen content in the cold storage chamber at the same time, thereby achieving fresh air exchange and oxygen reduction in the cold storage chamber, so as to better preserve food.

[0006] To this end, the present application is intended to provide a refrigerator, comprising:

[0007] The box body includes a top and a bottom arranged along the length direction thereof, and the box body includes an outer shell and an inner liner, and the inner liner is arranged inside the outer shell;

[0008] An installation space is provided between the inner tank and the outer shell;

[0009] The insulation layer is arranged in the installation space to reduce the heat exchange between the inside and outside of the box;

[0010] A compressor compartment, which is arranged at the bottom of the box body;

[0011] A refrigerating chamber, which is configured to be formed by an inner tank and is used for refrigerating and storing food;

[0012] A door body, which is used to open or close the refrigeration chamber;

[0013] A first flow gap, which is configured as a gap at the connection between the door body and the box body when the door body closes the refrigerating chamber;

[0014] A first atmosphere-controlled membrane assembly is disposed on the top of the cold storage chamber, and the first atmosphere-controlled membrane assembly has a higher permeability to oxygen than to nitrogen;

[0015] A vacuum pump assembly, which is arranged in the compressor compartment and is used to evacuate the refrigerated compartment;

[0016] A first pipeline assembly, one end of which is connected to the vacuum pump assembly, and the other end of which passes through the insulation layer and extends to a side of the first gas-controlled membrane assembly away from the refrigerating chamber, and the first pipeline assembly is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly;

[0017] When the vacuum pump assembly is working, the air in the refrigerated room is pumped out through the first modified atmosphere membrane assembly;

[0018] The controller is configured as:

[0019] After the refrigerator is powered on, the vacuum pump assembly is turned on after receiving the first signal or the vacuum pump assembly is turned on directly, and the vacuum pump assembly evacuates the refrigerating chamber and discharges the evacuated gas to other compartments or the outside of the box, so that there is a pressure difference between the refrigerating chamber and the outside of the refrigerating chamber;

[0020] The air outside the box enters the refrigerating chamber through the first circulation gap to form at least an airflow circulation path between the refrigerating chamber, the vacuum pump assembly, and the outside of the box, thereby replacing part of the gas generated by the food in the refrigerating chamber;

[0021] The oxygen content of the gas extracted by the vacuum pump assembly is higher than the oxygen content of the remaining air in the refrigerating chamber at least for a period of time, so that the oxygen content in the refrigerating chamber is lower than the relative oxygen content of the gas outside the refrigerating chamber.

[0022] In some embodiments of the present application, it also includes:

[0023] A fresh-keeping drawer, which is located in the refrigerator or in the inner tank;

[0024] A second modified atmosphere membrane assembly is arranged on the top of the fresh-keeping drawer, and the second modified atmosphere membrane has a faster permeability to oxygen than to nitrogen;

[0025] A second pipeline assembly, one end of which is connected to the vacuum pump assembly, and the other end of which extends through the insulation layer to a side of the second gas-controlled membrane assembly away from the interior of the fresh-keeping drawer, and the second pipeline assembly is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly;

[0026] The controller is configured so that when the vacuum pump assembly is in operation, the air in the fresh-keeping drawer passes through the second atmosphere-controlled membrane assembly and enters the second pipeline assembly;

[0027] The oxygen content of the gas extracted from the fresh-keeping drawer by the vacuum pump assembly is higher than the oxygen content of the remaining air in the fresh-keeping drawer at least for a period of time, so that the oxygen content in the fresh-keeping drawer is reduced.

[0028] In some embodiments of the present application, the first pipeline assembly and the second pipeline assembly are connected to each other, and the refrigerator further includes:

[0029] A regulating valve, which is arranged at the connection between the first pipeline assembly and the second pipeline assembly, and is used to control the communication between the refrigerating chamber and the vacuum pump assembly and / or the fresh-keeping drawer and the vacuum pump assembly;

[0030] The controller is configured to selectively reduce the oxygen level in the refrigerator compartment and / or the fresh-keeping drawer by adjusting the state of the regulating valve.

[0031] In some embodiments of the present application, it also includes:

[0032] The back air duct is arranged at the back of the box body, and the back air duct is connected with the refrigeration chamber and the fresh-keeping drawer;

[0033] A refrigeration fan is provided in the back duct to speed up the airflow in the back duct;

[0034] The controller is configured to, during the operation of the vacuum pump assembly, turn on the refrigeration fan to accelerate the airflow in the refrigeration chamber.

[0035] In some embodiments of the present application, it also includes:

[0036] An image acquisition device is disposed in the refrigerator and / or the fresh-keeping drawer, and is used to acquire images in the refrigerator and / or the fresh-keeping drawer and send them to the controller;

[0037] An oxygen concentration detection device is provided in the refrigerator compartment and / or the fresh-keeping drawer and is used to detect the oxygen concentration in the refrigerator compartment and / or the fresh-keeping drawer;

[0038] The controller is configured to, when food is placed in the refrigerating chamber, receive an image captured by an image acquisition device in the refrigerating chamber, obtain the type of food and obtain a first required oxygen content range of the food accordingly, start the vacuum pump assembly, and adjust the regulating valve to connect the refrigerating chamber with the vacuum pump assembly;

[0039] When the oxygen concentration in the refrigerated chamber reaches an upper limit value of a first required oxygen content range, turning off the vacuum pump assembly;

[0040] and / or

[0041] When food is put into the fresh-keeping drawer, an image captured by an image acquisition device in the fresh-keeping drawer is received, the type of food is acquired and a second required oxygen content range of the food is obtained accordingly, the vacuum pump assembly is turned on, and the regulating valve is adjusted to connect the fresh-keeping drawer with the vacuum pump assembly;

[0042] When the oxygen concentration in the fresh-keeping drawer reaches the upper limit value of the second required oxygen content range, the vacuum pump assembly is turned off.

[0043] In some embodiments of the present application, it also includes:

[0044] A gas collecting chamber connected to the air inlet end of the vacuum pump assembly and used to collect oxygen-rich gas extracted from the refrigerator compartment and / or the fresh-keeping drawer by the vacuum pump assembly;

[0045] A storage chamber is disposed in the box body, and the storage chamber includes an oxygen inlet connected to the gas outlet of the vacuum pump assembly to receive gas from the gas collection chamber;

[0046] The vacuum pump assembly is configured to suck the gas in the refrigerator compartment or the fresh-keeping drawer into the gas collection cavity through the pipeline assembly, so that more oxygen in the air around the modified atmosphere membrane assembly than nitrogen around the modified atmosphere membrane assembly passes through the modified atmosphere membrane assembly into the gas collection cavity, so as to reduce the oxygen concentration in the refrigerator compartment or the fresh-keeping drawer;

[0047] The gas in the gas collection chamber enters the storage compartment to form a high oxygen concentration space in the storage compartment.

[0048] In some embodiments of the present application, the air outlet end of the vacuum pump assembly may also be connected to the outside of the box;

[0049] The controller is configured to discharge the extracted gas out of the box when the oxygen content in the storage room reaches the lower limit of a preset oxygen concentration range and the vacuum pump assembly has not stopped pumping gas.

[0050] In some embodiments of the present application, the vacuum pump assembly includes a plurality of vacuum pumps, and the vacuum pumps are simultaneously connected to the first pipeline assembly;

[0051] The controller is configured to, when receiving the second signal from the refrigerating chamber, simultaneously start at least two vacuum pumps to speed up the extraction of air from the refrigerating chamber.

[0052] The present application also provides a refrigerator, which includes:

[0053] The box body includes a top and a bottom arranged along the length direction thereof, and the box body includes an outer shell and an inner liner, and the inner liner is arranged inside the outer shell;

[0054] An installation space is provided between the inner tank and the outer shell;

[0055] The insulation layer is arranged in the installation space to reduce the heat exchange between the inside and outside of the box;

[0056] A compressor compartment, which is arranged at the bottom of the box body;

[0057] A refrigerating chamber, which is configured to be formed by an inner tank and is used for refrigerating and storing food;

[0058] A door body, which is used to open or close the refrigeration chamber;

[0059] A first flow gap, which is configured as a gap at the connection between the door body and the box body when the door body closes the refrigerating chamber;

[0060] A first controlled atmosphere membrane assembly is disposed on the top of the cold storage room, and the controlled atmosphere membrane assembly has a faster permeability to oxygen than to nitrogen;

[0061] A vacuum pump assembly, which is arranged in the compressor compartment and is used to evacuate the refrigerated compartment;

[0062] A pipeline assembly, one end of which is connected to the vacuum pump assembly, and the other end of which passes through the insulation layer and extends to the side of the gas-controlled membrane assembly away from the cold storage chamber, and the pipeline assembly is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly;

[0063] When the vacuum pump assembly is working, the air in the cold storage room is pumped out through the modified atmosphere membrane assembly;

[0064] A humidity detection device is arranged in the refrigerating chamber and is used to detect the humidity in the refrigerating chamber;

[0065] The controller is configured as:

[0066] receiving a humidity value detected by a humidity detection device, and when the humidity value reaches a first preset humidity value, starting a vacuum pump assembly,

[0067] The vacuum pump assembly evacuates the refrigerating chamber and discharges the evacuated gas to other compartments or the outside of the box to reduce the pressure in the refrigerating chamber;

[0068] The air outside the box enters the refrigerating chamber through the first circulation gap to form at least an airflow circulation path among the refrigerating chamber, the vacuum pump assembly and the outside of the box, so as to discharge the moisture in the refrigerating chamber out of the refrigerating chamber through the airflow circulation.

[0069] In some embodiments of the present application, the controller is configured to reduce the operating frequency of the vacuum pump assembly or shut down the vacuum pump assembly to slow down or stop the airflow circulation in the refrigerated compartment when the humidity value drops to a second preset humidity value.

[0070] In the above embodiment, the refrigerator includes a box body having a top and a bottom arranged along the length direction, the box body includes an outer shell and an inner liner, the inner liner is arranged inside the outer shell, an installation space is formed between the inner liner and the outer shell, the installation space is used to form a thermal insulation layer, and the interior of the inner liner forms a refrigerator compartment, a freezer compartment and a fresh-keeping drawer. The refrigerator also includes a door body for opening and closing the refrigerator compartment, an atmosphere-controlled membrane assembly arranged on the top of the refrigerator compartment, a vacuum pump assembly arranged on the compressor compartment, and a pipeline assembly for connecting the vacuum pump assembly and the atmosphere-controlled membrane assembly, the vacuum pump assembly is used to extract air from the refrigerator compartment and / or the fresh-keeping drawer, one end of the pipeline assembly is connected to the vacuum pump assembly, and the other end of the pipeline assembly is connected to the atmosphere-controlled membrane assembly through the thermal insulation layer. The components are connected, and the pipeline component is used to provide a flow pipeline for the gas extracted by the vacuum pump component. The controller is configured so that when the door body closes the refrigerator compartment, the vacuum pump component is turned on, the vacuum pump component extracts air from the refrigerator compartment and discharges the extracted gas to other compartments or the outside of the box to reduce the pressure in the refrigerator compartment; the air outside the box enters the refrigerator compartment through the first flow gap to at least form an air flow circulation path between the refrigerator compartment, the vacuum pump component, and the outside of the box, thereby replacing part of the gas generated by the food in the refrigerator compartment; in the above process, the oxygen content of the gas extracted by the vacuum pump component is higher than the oxygen content of the remaining air in the refrigerator compartment for at least a period of time, so as to reduce the oxygen content in the refrigerator compartment.

[0071] By reducing the respiration of fruits and vegetables through low oxygen, it is beneficial to the storage and preservation of fruits and vegetables in the refrigerator. At the same time, the gas in the refrigerator is replaced to reduce the odor of the internal ingredients. The air in the refrigerator is not stagnant for a long time, which causes bacteria to grow, thus improving the refrigerator's ability to preserve food. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0073] Figure 1 is a schematic structural diagram of a refrigerator provided according to an exemplary embodiment;

[0074] Figure 2 A schematic diagram of a partial structure of an implementation of oxygen reduction in a refrigerator provided according to an exemplary embodiment;

[0075] Figure 3 It is a partial structural schematic diagram of another implementation of refrigerator oxygen reduction according to an exemplary embodiment;

[0076] Figure 4It is another partial structural schematic diagram of another embodiment of the refrigerator oxygen reduction method according to an exemplary embodiment;

[0077] Figure 5 It is a partial structural schematic diagram of another implementation of refrigerator oxygen reduction according to an exemplary embodiment;

[0078] Figure 6 It is an exploded view of another embodiment of the refrigerator oxygen reduction method according to an exemplary embodiment;

[0079] Figure 7 It is a partial structural schematic diagram of another implementation of refrigerator oxygen reduction according to an exemplary embodiment;

[0080] Figure 8 It is a connection schematic diagram of a vacuum pump assembly, a modified atmosphere membrane assembly, and a pipeline assembly according to an exemplary embodiment;

[0081] Fig. 9 is a hardware configuration block diagram of a refrigerator according to an exemplary embodiment;

[0082] Fig.10 is a hardware configuration block diagram of a controller according to an exemplary embodiment;

[0083] Fig.11 The control logic of oxygen reduction in the refrigeration chamber is proposed according to an exemplary embodiment;

[0084] Fig.12 Control logic for switching to oxygen reduction in a refrigerator compartment and / or a fresh-keeping drawer according to an exemplary embodiment;

[0085] Fig.13 Another control logic for oxygen reduction of a refrigerating chamber according to an exemplary embodiment is provided;

[0086] Fig.14 A control logic for oxygenation of a storage compartment according to an exemplary embodiment;

[0087] Fig.15 A control logic for preventing condensation in a refrigerating chamber according to an exemplary embodiment;

[0088] Fig.16 The fresh air oxygen reduction control logic of the fresh-keeping drawer proposed according to the exemplary embodiment;

[0089] Fig.17 The control logic for preventing condensation of a fresh-keeping drawer according to an exemplary embodiment is provided;

[0090] Fig.18 The control logic of the sterilization action of the refrigeration room after fresh air oxygen reduction is proposed according to an exemplary embodiment;

[0091] Fig.19 The control logic of the sterilization action of the fresh-keeping drawer after fresh air oxygen reduction is proposed according to an exemplary embodiment;

[0092] Fig. 20 The control logic of the first sterilization module in the fresh air oxygen reduction process in the refrigeration chamber according to the exemplary embodiment;

[0093] Fig.21 The control logic of sterilization work of the refrigerator before fresh air oxygen reduction is explained by taking the refrigerator compartment as an example according to the exemplary embodiment;

[0094] Fig. 22 The control logic of sterilization work of the refrigerator before fresh air reduction is explained by taking a fresh-keeping drawer as an example according to an exemplary embodiment;

[0095] Fig.23 The control logic of deodorization of a refrigerator is explained by taking a refrigerator compartment as an example according to an exemplary embodiment;

[0096] Fig.24 Schematic diagram of the structure of a sterilization module and a deodorization module of a refrigerator according to an exemplary embodiment;

[0097] Fig.25 The explosion of the sterilization module and the deodorization module of the refrigerator according to the exemplary embodiment Figure 1 ;

[0098] Fig.26 The explosion of the sterilization module and the deodorization module of the refrigerator according to the exemplary embodiment Figure 2 ;

[0099] Fig. 27 for Fig.32 The enlarged view of point A in the middle;

[0100] Fig.28 for Fig.26 The enlarged view of point B in the middle;

[0101] Fig.29 is a schematic structural diagram of a photocatalyst unit according to an exemplary embodiment;

[0102] Fig.30 An exploded view of a photocatalyst unit according to an exemplary embodiment;

[0103] Fig.31 is an exploded view of another photocatalyst unit according to an exemplary embodiment;

[0104] Fig.32 is a partial schematic diagram of a sterilization module according to an exemplary embodiment;

[0105] In the above figures:

[0106] Bus 81; memory 82; processor 83; communication interface 84; controller 6;

[0107] Refrigerating chamber 1; door body 2; image acquisition device 3; oxygen concentration detection device 4; regulating valve 5;

[0108] Pipeline assembly 7; vacuum pump assembly 8; controlled atmosphere membrane assembly 10; fresh-keeping drawer 11; box body 100;

[0109] A first door closing detection component 91; a second door closing detection component 92;

[0110] A first modified atmosphere membrane assembly 101; a second modified atmosphere membrane assembly 102;

[0111] Freezer 12; compressor compartment 13; outer shell 110; liner 120; mounting member 71;

[0112] A first humidity detection device 14; a second humidity detection device 141;

[0113] Refrigeration fan 15; drawer shell 112; drawer body 111; housing 31;

[0114] Inlet 32; outlet 33; built-in fan 34;

[0115] Accommodating space 35; positive and negative ion generating unit 361; strong oxidizing ion generating unit 362;

[0116] Photocatalyst unit 363; positive electrode 3611; negative electrode 3612;

[0117] Substrate plate 3631; first electrode plate 3632; second electrode plate 3633; photocatalyst layer 3634;

[0118] Cold catalyst catalytic unit 364; needle tip structure 3621; emitter electrode structure 3622. DETAILED DESCRIPTION

[0119] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0120] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0121] The terms "first", "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first", "second" may explicitly or implicitly include one or more of the features.

[0122] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0123] The present application provides a refrigerator, referring to Figure 1 The refrigerator includes a box body 100, which includes a top and a bottom arranged along the length direction. A storage compartment is formed inside the box body 100, and the storage compartment includes at least a refrigerating chamber 1 and a freezing chamber 12, so as to facilitate refrigerated or frozen storage of food.

[0124] In some embodiments, the storage compartment may further include a fresh-keeping drawer 11 and a variable temperature chamber, etc., to meet different storage needs of users.

[0125] Reference Figure 1 In the embodiment, the fresh-keeping drawer 11 is arranged in the refrigerating chamber 1. It can be known that the fresh-keeping drawer 11 can also be arranged between the refrigerating chamber 1 and the freezing chamber 12 to adapt to the layout requirements of different models.

[0126] It can be known that the vacuum pump assembly in the present application can perform vacuum and oxygen reduction operations on any storage compartment of the refrigerator, and only requires reasonable pipeline settings.

[0127] The refrigerator of the present application further comprises a door body 2, which comprises a door body inner shell and a door body outer shell. The door body 2 is used to open and close the storage space.

[0128] The door body 2 can be used to form a relatively closed space in the box body 100 to facilitate the oxygen reduction work inside the box body 100 and prevent excessive air from flowing in from the outside, resulting in poor oxygen reduction effect.

[0129] When the door body 2 closes the refrigerating chamber 1, a gap at the connection between the door body 2 and the box body 100 is defined as a first flow gap.

[0130] In some embodiments, a first through hole connecting the outside of the box body 100 and the cold storage chamber 1 can be opened on the box body 100. The first through hole can be opened or closed according to the working state, so as to promote the gas outside the cold storage chamber 1 to enter the cold storage chamber 1 during the oxygen reduction process or the operation of the vacuum pump assembly 8, and to form a relatively closed space in the box body 100 during normal storage of the refrigerator.

[0131] It can be known that the first through hole can be set as a circular hole or a narrow and long first through hole, but the ventilated area of ​​the first through hole should not be too large, otherwise it will not be easy to preserve the food in the refrigerator.

[0132] It is understood that in some embodiments, the first flow gap and the first through hole may work in conjunction with each other.

[0133] Reference Figure 2 The box body 100 includes an inner liner 120 that defines a storage space, and an outer shell 110 that is connected to the outer side of the inner liner 120 to form the appearance of the refrigerator. An installation space is formed between the inner liner 120 and the outer shell 110, and the installation space is used to form an insulation layer to insulate the storage space inside the box body 100 from the outside.

[0134] A back duct is formed between the inner liner 120 and the outer shell 110 , and the back duct is connected to the storage compartment inside the box 100 . A refrigeration system is arranged in the back duct, and cold air generated by the refrigeration system enters the box 100 through the back duct to cool the food in the box 100 .

[0135] A refrigeration fan 15 is provided in the back duct to accelerate the airflow velocity of the entire back duct and the box 100, speed up heat exchange and further promote oxygen reduction efficiency.

[0136] In the present application, a refrigeration system for supplying cold air to a storage room includes a compressor, a condenser, an expansion valve, and an evaporator. The refrigerant circulates in the various components of the refrigeration system to achieve a refrigeration effect. The main flow process of the refrigerant in each component is: the refrigerant enters the condenser after passing through the compressor, enters the expansion valve after passing through the condenser, enters the evaporator after passing through the expansion valve, and flows back to the compressor after passing through the evaporator.

[0137] Specifically, the compressor compresses the refrigerant gas at high temperature and high pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process. The expansion valve expands the liquid phase refrigerant in the high temperature and high pressure state in the condenser into a low pressure liquid phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low temperature and low pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant or heat exchange with the material to be cooled.

[0138] Reference Figure 2 The box body 100 includes a top and a bottom that are relatively arranged. A compressor compartment 13 is arranged at the bottom of the refrigerator in the present application. In the present application, in addition to the compressor, a vacuum pump assembly 8 is also installed in the compressor compartment 13. The vacuum pump assembly 8 can be used to extract air from the refrigeration chamber 1 and / or the fresh-keeping drawer 11.

[0139] A first controlled atmosphere membrane assembly 101 is installed on the top of the cold storage room 1. The controlled atmosphere membrane assembly can be used to separate a certain type of air from a gas mixture because different polymer membranes have different permeabilities and selectivities to different types of gas molecules. In this application, oxygen is separated from the air.

[0140] By arranging the first atmosphere-controlled membrane assembly 101 on the top of the refrigerating chamber 1, it is effectively prevented that the first atmosphere-controlled membrane assembly 101 is blocked by food, thereby affecting airflow circulation.

[0141] In some embodiments, the first modified atmosphere membrane assembly 101 may also be disposed at the rear wall or the side wall of the refrigerating chamber 1 to facilitate the overall layout of the refrigerator.

[0142] In some embodiments, the first modified atmosphere membrane 101 assembly can be provided in plurality, and the first modified atmosphere membrane assembly 101 is provided at one or a combination of the top, rear wall and side wall of the refrigerating chamber 1, so as to accelerate the circulation velocity of the air in the refrigerating chamber 1 and improve the oxygen reduction efficiency and ventilation efficiency of the refrigerating chamber 1.

[0143] In some embodiments, the gas-controlled membrane assembly is configured as a thin film made of a conductive organic material such as polyaniline. This polymer can be doped with charged atoms, and the permeability of the film can be changed by the content of the dopant. When passing through this film, oxygen is faster than nitrogen, so oxygen produced by this film can be used.

[0144] In order to cooperate with the work of the vacuum pump assembly 8, the refrigerator also includes a pipeline assembly 7, and the pipeline assembly 7 includes a first pipeline assembly 7 and a second pipeline assembly 7, which are respectively connected to the refrigerating chamber 1 and the fresh-keeping drawer 11.

[0145] 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 passes through the insulation layer and extends to the side of the first atmosphere-controlled membrane assembly 101 away from the cold storage chamber 1. The first pipeline assembly 7 is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8.

[0146] When the vacuum pump assembly 8 is working, the air in the refrigerating chamber 1 will pass through the first atmosphere-controlled membrane assembly 101 and then be drawn out to perform a better oxygen reduction action.

[0147] Reference Figure 2 In the figure, the pipeline assembly 7 is installed in the insulation layer through the mounting member 71, so as to fix the position of the pipeline assembly 7 in the insulation layer and avoid the situation that the foaming process of the insulation layer is affected by the setting of the pipeline assembly 7, resulting in bulging or depression of the insulation layer.

[0148] Through the above-mentioned arrangement, the vacuum pump assembly 8 is installed in the compressor compartment 13, which does not affect the storage space of the refrigerator without increasing the overall volume of the refrigerator. At the same time, the pipeline assembly 7 is arranged in the insulation layer, and no additional space layout is required. The overall planning of the refrigerator is simple and does not affect the existing functions of the refrigerator.

[0149] In some embodiments of the present application, the fresh-keeping drawer 11 is arranged in the refrigerator 1, and the fresh-keeping drawer 11 includes a drawer shell 112 arranged in the refrigerator 1, and a drawer body 111 that can slide relative to the opening of the drawer shell 112. Exemplarily, a slide rail can be arranged on the inner wall of the drawer shell 112, and a sliding block that moves along the slide rail is arranged at a relative position of the drawer body 111.

[0150] In some embodiments, a sealing strip is provided on the side where the drawer body 111 contacts the opening of the drawer shell 112. When the drawer body 111 and the drawer shell 112 are installed, the drawer body 111 and the drawer shell 112 form a relatively closed storage space. A second flow gap is provided at the contact position between the drawer body 111 and the drawer shell 112. When there is a pressure difference between the inside and outside of the storage space formed by the fresh-keeping drawer 11, external air will enter the fresh-keeping drawer 11.

[0151] In some embodiments, a sealing strip is provided at the opening position of the drawer shell 112. When the drawer body 111 is pushed into the drawer shell 112, the drawer body 111 and the drawer shell 112 form a relatively closed storage space. There is a gap at the contact position between the drawer body 111 and the drawer shell 112. When there is a pressure difference between the inside and outside of the storage space formed by the fresh-keeping drawer 11, external air will enter the fresh-keeping drawer 11.

[0152] In some embodiments, a second through hole for connecting the fresh-keeping drawer 11 with the refrigerator chamber 1 can also be opened on the drawer shell 112. The second through hole can be opened or closed according to the working state of the fresh-keeping drawer 11, so as to promote the gas outside the fresh-keeping drawer 11 (the gas in the refrigerator chamber 1) to enter the fresh-keeping drawer 11 during the oxygen reduction process or the operation of the vacuum pump assembly 8, and to form a relatively closed space for the fresh-keeping drawer 11 during the normal storage process of the fresh-keeping drawer 11.

[0153] It is understood that in some embodiments, the second flow gap and the second through hole may work in conjunction with each other.

[0154] In some embodiments, a third through hole for connecting the outside of the box 100 and the fresh-keeping drawer 11 can also be opened on the drawer body 111. The third through hole can be opened or closed according to the working state of the fresh-keeping drawer 11, so as to promote the gas outside the box 100 to enter the fresh-keeping drawer 11 during the deoxygenation process or the operation of the vacuum pump assembly 8, and to form a relatively closed space for the fresh-keeping drawer 11 during the normal storage process of the fresh-keeping drawer 11.

[0155] It is understood that in some embodiments, the second flow gap and the third through hole may work in conjunction with each other.

[0156] Similarly, in order to reduce the oxygen in the fresh-keeping drawer 11 , the refrigerator further includes a second atmosphere-controlled membrane assembly 102 and a second pipeline assembly 7 .

[0157] Among them, refer to Figure 6 The second modified atmosphere membrane assembly 102 is arranged on the top of the fresh-keeping drawer 11 . The structural composition of the second modified atmosphere membrane is consistent with that of the first modified atmosphere membrane assembly 101 , and will not be described in detail here.

[0158] By arranging the second modified atmosphere membrane assembly 102 on the top of the fresh-keeping drawer 11, it is effectively prevented that the first modified atmosphere membrane assembly 101 is blocked by food, thereby affecting air circulation.

[0159] In some embodiments, the second modified atmosphere membrane assembly 102 may also be disposed at the rear wall or the side wall of the fresh-keeping drawer 11 to facilitate the overall layout of the refrigerator.

[0160] In some embodiments, the second atmosphere-modifying membrane assembly 102 can be provided in plurality, and the second atmosphere-modifying membrane assembly 102 is provided at one or a combination of the top, rear wall and side wall of the fresh-keeping drawer 11, so as to accelerate the circulation velocity of the air in the fresh-keeping drawer 11 and improve the oxygen reduction efficiency and ventilation efficiency of the fresh-keeping drawer 11.

[0161] One end of the second pipeline assembly 7 is connected to the vacuum pump assembly 8, and the other end of the second pipeline assembly 7 passes through the insulation layer and extends to the side of the second atmosphere-controlled membrane assembly 102 away from the fresh-keeping drawer 11. The second pipeline assembly 7 is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8.

[0162] When the vacuum pump assembly 8 is working, the air in the fresh-keeping drawer 11 will pass through the second atmosphere-controlled membrane assembly 102 and then be drawn out to perform a better oxygen reduction action.

[0163] Based on the above, when the fresh-keeping drawer can be set between the refrigerator and the freezer, at this time, the oxygen reduction action for the fresh-keeping drawer is the same as that of the refrigerator; when the fresh-keeping drawer is set in the refrigerator, the air in the refrigerator can be used to participate in the air flow circulation to form air flow inside and outside the fresh-keeping drawer, thereby improving the oxygen reduction efficiency of the fresh-keeping drawer.

[0164] It should be noted that, since the fresh-keeping drawer 11 is arranged between the refrigerator compartment 1 and the freezer compartment 12, that is, when the fresh-keeping drawer 11 is arranged independently, the control logic of the fresh air oxygen reduction action and anti-condensation of the fresh-keeping drawer 11 is substantially the same as that of the refrigerator compartment 1. In this application, the technical solution is mainly described with the fresh-keeping drawer 11 being located in the refrigerator compartment 1.

[0165] In some embodiments, when the refrigerator performs the fresh air oxygen reduction function, the refrigeration fan of the back air duct is started to accelerate the air circulation and increase the rate of the fresh air oxygen reduction module.

[0166] In some implementations of the present embodiment, the first pipeline assembly 7 and the second pipeline assembly 7 are intersected and connected, and a regulating valve 5 is provided at the connection between the first pipeline assembly 7 and the second pipeline assembly 7, and the regulating valve 5 is used to control the connectivity between the refrigeration chamber 1 and the vacuum pump assembly 8 and / or the fresh-keeping drawer 11 and the vacuum pump assembly 8.

[0167] In some implementations of this embodiment, the refrigerator also includes a gas collection chamber, which is connected to the air inlet end of the vacuum pump assembly 8, and the gas collection chamber is used to collect the oxygen-rich gas extracted by the vacuum pump assembly 8 from the refrigeration chamber 1 and / or the fresh-keeping drawer 11.

[0168] Specifically, in some embodiments, the gas collection chambers can be provided separately or together to collect the air from the refrigerating chamber 1 or the fresh-keeping drawer 11 .

[0169] Exemplarily, the gas collecting chamber is arranged at the top of the refrigerating chamber 1, and a gas-conditioning membrane assembly is arranged on one side of the gas collecting chamber close to the refrigerating chamber 1 for air filtering.

[0170] In some implementations of this embodiment, the first modified atmosphere membrane assembly 101 includes a gas collecting chamber disposed on the top of the refrigerating chamber 1 and an oxygen-enriched membrane disposed on a side of the gas collecting chamber close to the interior of the box body 100 .

[0171] The gas collecting chamber is provided with an outlet, which is also the outlet of the entire gas-controlled atmosphere membrane assembly. The outlet is connected to the first pipeline assembly 7. Under the action of the vacuum pump assembly 8, the refrigerating chamber 1 is evacuated, and the oxygen in the air in the refrigerating chamber 1 will adhere to the oxygen-enriched membrane, so that the oxygen content in the gas collecting chamber is finally higher than the oxygen content in the air in the refrigerating chamber 1, so as to reduce the oxygen content in the refrigerating chamber 1, and at the same time promote the airflow circulation in the refrigerating chamber 1, thereby improving the food preservation quality in the refrigerating chamber 1.

[0172] In some implementations of this embodiment, the second modified atmosphere membrane assembly 102 includes a gas collection chamber disposed on the top of the fresh-keeping drawer 11 and an oxygen-enriched membrane disposed on a side of the gas collection chamber close to the interior of the box 100 .

[0173] The gas collecting chamber is provided with an outlet, which is connected to the second pipeline assembly 7. Under the action of the vacuum pump assembly 8, the fresh-keeping drawer 11 is evacuated, and the oxygen in the air in the fresh-keeping drawer 11 will adhere to the oxygen-enriched membrane, so that the oxygen content in the gas collecting chamber is finally higher than the oxygen content of the air in the fresh-keeping drawer 11, so as to reduce the oxygen content in the fresh-keeping drawer 11 and improve the preservation quality of the food in the fresh-keeping drawer 11.

[0174] Reference Fig.10 The refrigerator in the embodiment of the present application further includes a controller 6. The controller 6 obtains various operating parameters of the refrigerator through various control programs stored in the memory, and controls the operation of various parts of the refrigerator and responds to user operations. The controller 6 can achieve the low oxygen requirements of the refrigerating chamber 1 and the fresh-keeping drawer 11, as well as the high oxygen requirements 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 requirements of users.

[0175] The controller 6 controls the overall operation of the refrigerator. For example, in response to receiving an oxygen reduction instruction for a corresponding compartment issued by a user, the controller 6 can perform operations related to the object selected by the oxygen reduction instruction.

[0176] In some embodiments, the controller 6 includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), a random access memory (RAM), a read-only memory (ROM), a first interface to an nth interface for input / output, a communication bus, etc.

[0177] In the embodiment shown in the present application, the controller 6 refers to a device that can generate an operation control signal according to an instruction operation code and a timing signal to instruct the refrigerator to execute a control instruction.

[0178] The present application embodiment also provides a hardware structure diagram of a controller 6, such as Figure 8 As shown, the controller 6

[0179] The system comprises a processor 83, and optionally, a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, the memory 82 and the communication interface 84 are connected via a bus 81.

[0180] The processor 83 may be a central processing unit 83 (CPU), a general processor 83, a network processor 83 (NP), a digital signal processor 83 (DSP), a microprocessor 83, a microcontroller 6, a programmable logic device (PLD), or any combination thereof. The processor 83 may also be any other device having a processing function, such as a circuit, a device, or a software module. The processor 83 may also include multiple CPUs, and the processor 83 may be a single-CPU processor 83 or a multi-CPU processor 83. The processor 83 here may refer to one or more devices, circuits, or processing cores for processing data (such as computer program instructions).

[0181] The memory 82 may be a read-only memory 82 (ROM) or other types of static storage devices that can store static information and instructions, a random access memory 82 (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory 82 (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, and the embodiment of the present application does not impose any restrictions on this. The memory 82 may exist independently or be integrated with the processor 83. Among them, the memory 82 may contain a computer program code. The processor 83 is used to execute the computer program code stored in the memory 82, thereby realizing the control method of the multi-connected refrigerator 100 system provided in the embodiment of the present application.

[0182] 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, a circuit, a transceiver or any device that can achieve communication.

[0183] The bus 81 may be a peripheral component interconnect (PCI) bus 81 or an extended industry standard architecture (EISA) bus 81, etc. The bus 81 may be divided into an address bus 81, a data bus 81, a control bus 81, etc. For ease of representation, Fig.11 Although only one thick line is used in the figure, it does not mean that there is only one bus 81 or only one type of bus 81.

[0184] In some implementations of this embodiment, the controller 6 is installed on the door body 2. Of course, the controller 6 can also be installed on the box body 100 for layout purposes.

[0185] In some implementations of this embodiment, reference Fig. 9The refrigerator further includes a door closing detection component, which is installed on the door body 2 or the box body 100. The door closing detection component is used to detect the state of the door body 2 and send a door opening signal or a door closing signal to the controller 6. Exemplarily, the door closing detection component is set as a door closing detection sensor, which is used to detect whether the box body 100 is in a closed state, so as to better perform the oxygen reduction action. The door closing detection component used to detect the state of the door body is defined as the first door closing detection component 91.

[0186] In some implementations of this embodiment, reference Fig. 9 The refrigerator also includes an image acquisition device 3, which is arranged in the refrigerating chamber 1 and / or the fresh-keeping drawer 11. The image acquisition device 3 is used to acquire images in the refrigerating chamber 1 and / or the fresh-keeping drawer 11 and send them to the controller 6.

[0187] The controller 6 stores the types of food and the oxygen content range required for preservation. After receiving the image captured by the image acquisition device 3, the controller 6 can perform image recognition to obtain the type of food in the current space and obtain the corresponding required oxygen content range to control the operation of the vacuum pump assembly 8.

[0188] Exemplarily, the image acquisition device 3 may be configured as a camera, which is used to acquire images and send the images to the controller 6 .

[0189] In some implementations of this embodiment, reference Figure 1 The refrigerator also includes an odor detection device 4, which is installed in the refrigerator compartment and / or the fresh-keeping drawer. The odor detection device 4 is used to detect the odor concentration in the space as a basis for turning on the fresh air reduction function.

[0190] In some embodiments, when the odor concentration level identified in the refrigerator compartment 1 or the fresh-keeping drawer 11 reaches a preset critical value, the fresh air oxygen reduction function is turned on to remove odor molecules through gas replacement.

[0191] Reference Fig. 9 The refrigerator also includes an oxygen concentration detection device 4, which is arranged in the refrigerating chamber 1 and / or the fresh-keeping drawer 11, and is used to detect the oxygen concentration in the refrigerating chamber 1 and / or the fresh-keeping drawer 11, so as to assist the controller 6 to control the working state of the vacuum pump component 8.

[0192] In some embodiments, the oxygen concentration detection device 4 may also be disposed in the storage compartment to detect the internal oxygen concentration and prevent the internal oxygen concentration from being too high.

[0193] In some embodiments, the compartments that need oxygen reduction, the number of vacuum pump assemblies 8, and the structure of the vacuum pump assemblies 8 are set to achieve oxygen reduction for a set number of compartments using a set number of vacuum pump assemblies 8.

[0194] In some embodiments, the refrigerator also includes a bacteria detection device, which is arranged in the refrigeration chamber 1 or the fresh-keeping drawer 11, for detecting the bacterial content in the chamber and outputting it to the controller 6 so that the controller 6 can control the corresponding sterilization module to sterilize and extend the storage time of the food.

[0195] The bacteria detection device provided in the refrigerator compartment 1 is defined as a first bacteria detection device, and the bacteria detection device provided in the fresh-keeping drawer 11 is defined as a second bacteria detection device.

[0196] Reference Figure 2 As shown, a set of vacuum pump components 8 is arranged in the compressor compartment 13, and a pipeline component 7 is led out from the air intake port of the vacuum pump component 8, and the pipeline component 7 is installed in the insulation layer (not shown in the figure), and then connected to the air outlet of the first gas-adjusting membrane component 101 located at the top of the refrigerating chamber 1, so as to extract the gas in the refrigerating chamber 1. In the figure, one vacuum pump component 8 works for one compartment.

[0197] In order to improve the oxygen reduction efficiency in a single room and improve the airflow circulation in the room. In some implementations of this embodiment, the first atmosphere-controlled membrane assembly 101 and the second atmosphere-controlled membrane assembly 102 can be provided in plurality, and each of the first atmosphere-controlled membrane assembly 101 and the second atmosphere-controlled membrane assembly 102 can be connected to the exhaust end of the vacuum pump assembly 8 through the corresponding pipeline assembly 7.

[0198] It can be known that the same vacuum pump assembly 8 can be connected here, and different vacuum pump assemblies 8 can also be connected here.

[0199] By providing a plurality of modified atmosphere membrane assemblies for one compartment, that is, providing a plurality of air extraction ports, the oxygen reduction efficiency of the refrigerating compartment 1 and / or the fresh-keeping drawer 11 can be effectively improved.

[0200] In order to flexibly adjust the oxygen content of the chamber connected to the modified atmosphere membrane assembly, in some implementations of this embodiment, the vacuum pump assembly 8 is provided in plurality, and a single vacuum pump assembly 8 can be connected to the first modified atmosphere membrane assembly 101 and / or the second modified atmosphere membrane assembly 102.

[0201] 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 oxygen reduction 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.

[0202] Reference Figure 3-4 The refrigerator shown in the figure includes two sets of vacuum pump assemblies 8, which are respectively installed on both sides of the compressor compartment 13 along the length direction. Figure 3Taking the center 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 .

[0203] Among them, the first vacuum pump assembly 8 is connected to the first modified atmosphere membrane assembly 101 to reduce the oxygen content in the refrigerating chamber 1; the second vacuum pump assembly 8 is connected to the second modified atmosphere membrane assembly 102 to reduce the oxygen content in the fresh-keeping drawer 11.

[0204] Of course, a set of vacuum pump components 8 can also be used to simultaneously reduce oxygen in the refrigerating chamber 1 and the fresh-keeping drawer 11. Figure 5 The refrigerator shown in the figure includes a set of vacuum pump components 8, which are respectively connected to the first modified atmosphere membrane component 101 and the second modified atmosphere membrane component 102 to complete the oxygen reduction action on the refrigerating chamber 1 and the fresh-keeping drawer 11.

[0205] It can be known that a valve is provided in the pipeline to adjust which compartment the vacuum pump assembly 8 is to reduce oxygen, so as to achieve precise oxygen reduction.

[0206] In some implementations of this embodiment, the vacuum pump assembly 8 includes multiple vacuum pumps, and the multiple vacuum pumps are simultaneously connected to the first pipeline assembly 7 and / or the second pipeline assembly 7, and the air flow in the pipeline is controlled by setting multiple valves.

[0207] The control is configured to, when receiving a second signal about the refrigerating chamber 1, simultaneously start at least two vacuum pumps to speed up the air extraction speed in the refrigerating chamber 1 and improve the oxygen reduction efficiency.

[0208] It should be noted that, when the controller 6 receives the second signal, the controller 6 controls the vacuum pump assembly 8 to work to achieve a faster air extraction speed to meet the need for strong oxygen reduction.

[0209] In some implementations of this embodiment, the first modified atmosphere membrane assembly 101 can be connected to a plurality of vacuum pump assemblies 8 so that two or more vacuum pump assemblies 8 can work to accelerate the decreasing rate of oxygen in the refrigerating chamber 1 .

[0210] In some implementations of this embodiment, the controller 6 is configured to, when receiving a strong oxygen reduction signal about the refrigerating chamber 1, simultaneously start at least two vacuum pump assemblies 8 to extract the oxygen in the refrigerating chamber 1 as quickly as possible.

[0211] In some implementations of this embodiment, the second modified atmosphere membrane assembly 102 can be connected to multiple vacuum pump assemblies 8 to facilitate the operation of two or more vacuum pump assemblies 8, thereby accelerating the rate of decrease of oxygen in the fresh-keeping drawer 11 and improving the oxygen reduction efficiency.

[0212] In some implementations of this embodiment, the controller 6 is configured to, when receiving a strong oxygen reduction signal regarding the fresh-keeping drawer 11, simultaneously start at least two vacuum pump assemblies 8 to extract the oxygen in the fresh-keeping drawer 11 as quickly as possible to improve the oxygen reduction efficiency.

[0213] Reference Figure 7-8 , the figure includes two sets of vacuum pump assemblies 8, which are respectively installed on both sides of the compressor compartment 13 along the length direction. Figure 7 Taking the center 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 .

[0214] The first vacuum pump assembly 8 is connected to the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102 , and the second vacuum pump assembly 8 is connected to the first modified atmosphere membrane assembly 101 .

[0215] That is to say, for the cold storage chamber 1, oxygen reduction can be carried out 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 chamber 1.

[0216] It can be 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 to achieve oxygen reduction at different rates and different energy consumptions.

[0217] For the fresh-keeping drawer 11 , oxygen reduction can be performed through the first vacuum pump assembly 8 .

[0218] In some implementations of this embodiment, when the fresh-keeping drawer 11 is subjected to oxygen reduction, the fresh-keeping drawer 11 may be subjected to oxygen reduction first, so that the fresh-keeping drawer 11 is in a space with a relatively low oxygen content. After the vacuum pump assembly 8 is operated, the gas outside the refrigerating chamber 1 enters the refrigerating chamber 1, and the gas in the refrigerating chamber 1 is drawn away by the vacuum pump assembly 8 through the first gas-adjusting membrane assembly 101, so that the oxygen content in the refrigerating chamber 1 is reduced.

[0219] Then the fresh-keeping drawer 11 is oxygenated, and the air in the fresh-keeping drawer 11 is drawn away through the second atmosphere-controlled membrane assembly 102, forming an air pressure difference between the fresh-keeping drawer 11 and the refrigerator chamber 1, and the gas in the refrigerator chamber 1 will enter the fresh-keeping drawer 11 through the gap between the drawer and the drawer shell 112, replacing the original air in the fresh-keeping drawer 11, so that the oxygen content in the fresh-keeping drawer 11 is lower.

[0220] Through the above-mentioned arrangement, the fresh-keeping drawer 11 is arranged in the refrigerator chamber 1 which can perform oxygen reduction action. Compared with the technical solution of independently arranging the fresh-keeping drawer 11, the fresh-keeping drawer 11 arranged in the refrigerator chamber 1 can replace the gas with lower oxygen content, and the fresh-keeping drawer 11 can reach the set oxygen content more quickly.

[0221] In the above process, when a pressure difference occurs between the inside and outside of the refrigerating chamber 1, the air outside the refrigerating chamber 1 will enter the refrigerating chamber 1 through the first flow gap or the first through hole of the refrigerating chamber 1 under the action of the pressure difference, thereby replacing the air in the refrigerating chamber 1. Within a certain pressure range, the greater the pressure difference between the inside and outside of the refrigerating chamber 1, the faster the gas exchange rate between the inside and outside of the refrigerating chamber 1.

[0222] When a pressure difference occurs between the inside and outside of the fresh-keeping drawer 11, the air outside the fresh-keeping drawer 11 or inside the refrigerator compartment 1 enters the fresh-keeping drawer 11 through the second flow gap, the second through hole or the third through hole of the fresh-keeping drawer 11 under the action of the pressure difference, thereby replacing the air inside the fresh-keeping drawer 11. Within a certain pressure range, the greater the pressure difference between the inside and outside of the fresh-keeping drawer 11, the faster the gas exchange rate between the inside and outside of the fresh-keeping drawer 11.

[0223] In some embodiments of the present application, the oxygen reduction action of the fresh-keeping drawer 11 and the oxygen reduction action of the refrigerator compartment 1 have no order relationship and can be performed simultaneously. When performing the oxygen reduction action, air flows inside the fresh-keeping drawer 11 and the refrigerator compartment 1, and air flows 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. In this way, the oxygen content in the fresh-keeping drawer 11 is lower than the oxygen content in the refrigerator compartment 1 for at least a period of time.

[0224] In some embodiments of the present application, the operation of the fresh air oxygen reduction mode can be turned on or off manually, or can be turned on according to a set program.

[0225] Exemplarily, the operation of the oxygen reduction fresh air mode can be controlled by setting a preset interval time, or by detecting parameters such as the oxygen content and the content of odor molecules in the space.

[0226] In some embodiments, the controller 6 is configured to operate the vacuum pump assembly 8 once at a certain interval. For example, the vacuum pump assembly 8 can be configured to operate once every 6 hours.

[0227] In some embodiments, when there are more fruits and vegetables stored in the refrigerator compartment 1 or the fresh-keeping drawer 11, the enhanced mode can be manually turned on, and the gas replacement operation time and interval time are increased compared to before.

[0228] In some embodiments, the working state of the first vacuum pump assembly 8 can be controlled according to the detected oxygen concentration of the fresh-keeping drawer 11 .

[0229] A regulating valve 5 is provided on the pipeline connected to the first vacuum pump assembly 8, which can adjust the connectivity and opening of the first vacuum pump assembly 8 with the first atmosphere-controlled membrane assembly 101 and the second atmosphere-controlled membrane assembly 102, so as to reach the corresponding oxygen reduction range more quickly within the working capacity of the vacuum pump assembly 8.

[0230] It can be known that, although the present application does not give an example of the second atmosphere-controlled membrane assembly 102 being connected to two or more vacuum pump assemblies 8, the scheme 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 fresh-keeping drawer 11 to reach the required oxygen content more quickly.

[0231] It should be noted that the technical solution of the present application can realize oxygen reduction of the refrigerator compartment 1 or the fresh-keeping drawer 11 alone, or simultaneously reduce oxygen of the refrigerator compartment 1 and the fresh-keeping drawer 11 through reasonable quantity settings and connection settings of the vacuum pump assembly 8 and the gas-controlled membrane assembly. It can be known that the order of reducing oxygen in the refrigerator compartment 1 and the fresh-keeping drawer 11 can be determined based on the internal detection data of the two storage compartments or run according to the existing program design.

[0232] In some implementations of the present embodiment, the controller 6 is configured to, after the refrigerator is powered on, start the vacuum pump assembly 8 or directly start the vacuum pump assembly 8 after receiving the first signal, the vacuum pump assembly 8 evacuates the refrigerating chamber 1 and discharges the evacuated gas to other compartments or the outside of the box 100 to reduce the pressure in the refrigerating chamber 1, so that there is a pressure difference between the refrigerating chamber and the outside of the refrigerating chamber; the air outside the box 100 enters the refrigerating chamber 1 through the circulation gap to at least form an airflow circulation path among the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the box 100, thereby replacing part of the gas generated by the food in the refrigerating chamber 1;

[0233] Among them, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the refrigerating chamber 1 for at least a period of time, so that the oxygen content in the refrigerating chamber 1 is reduced and the oxygen content in the refrigerating chamber is lower than the relative oxygen content of the gas composition outside the refrigerating chamber.

[0234] It is known that the oxygen content in the cold storage room is reduced to below 21%.

[0235] Through the above arrangement, when the door body 2 closes the refrigerating chamber 1, the refrigerating chamber 1 is in a closed state at normal pressure, and at this time, the vacuum pump assembly 8 performs the oxygen reduction operation most effectively. At the same time, since a modified atmosphere membrane assembly is arranged on the top of the refrigerating chamber 1, the gas flowing out of the refrigerating chamber 1 passes through the modified atmosphere membrane assembly, so that compared with other molecules, more oxygen enters the gas collection chamber through the modified atmosphere membrane assembly, and finally the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the refrigerating chamber 1, thereby achieving the oxygen reduction action on the refrigerating chamber 1 and improving the food preservation quality of the refrigerating chamber 1.

[0236] At the same time, by utilizing the pressure difference between the inside and outside of the cold storage room, an air flow circulation path is formed among the cold storage room 1, the vacuum pump assembly 8, and the outside of the box body 100. When the vacuum pump assembly 8 draws air from the cold storage room 1, the formed air flow circulation is utilized to perform the fresh air function in the cold storage room 1, so as to take away the carbon dioxide and other gases generated during the storage process that are not conducive to food preservation, thereby forming a gas replacement.

[0237] Similarly, in some embodiments, the controller 6 is also configured so that when the vacuum pump assembly 8 is working, the air in the fresh-keeping drawer 11 passes through the second atmosphere-controlled membrane assembly 102 and enters the second pipeline assembly 7, wherein the oxygen content of the gas extracted from the fresh-keeping drawer 11 by the vacuum pump assembly 8 is higher than the oxygen content of the remaining air in the fresh-keeping drawer 11 for at least a period of time, so that the oxygen content in the fresh-keeping drawer 11 is reduced to meet the preservation requirements of food in the fresh-keeping drawer 11.

[0238] In some embodiments, the operation of the vacuum pump assembly is also linked to the status of the refrigeration compartment.

[0239] Reference Fig.11 , taking the cold storage room 1 as an example, the control logic for oxygen reduction in the embodiment of the present application is explained.

[0240] Determine whether the refrigerating chamber 1 is in a closed state (step S1101);

[0241] In step S1101, if the refrigerating chamber 1 is in a closed state, step S1102 is executed to turn on the vacuum pump assembly 8;

[0242] In step S1101, if the refrigerating chamber 1 is not in a closed state, step S1103 is executed to give an alarm to remind the user to close the door.

[0243] In some implementations of the present embodiment, the controller 6 is configured to, after the refrigerator is powered on, receive a third signal to start the vacuum pump assembly 8 or directly start the vacuum pump assembly 8, the vacuum pump assembly 8 evacuates the fresh-keeping drawer 11 and discharges the evacuated gas to other compartments or the outside of the box body 100 to reduce the pressure in the fresh-keeping drawer 11, so that there is a pressure difference between the fresh-keeping drawer 11 and the refrigerator chamber 1; the air in the refrigerator chamber 1 enters the fresh-keeping drawer 11 through the second circulation gap to at least form an airflow circulation path of the fresh-keeping drawer 11, the vacuum pump assembly 8, the outside of the box body 100, and the refrigerator chamber 1, thereby replacing part of the gas in the fresh-keeping drawer 11.

[0244] Among them, the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the fresh-keeping drawer 11 for at least a period of time, so that the oxygen content in the fresh-keeping drawer 11 is reduced, and the relative oxygen content in the fresh-keeping drawer 11 is lower than the relative oxygen content of the gas in the refrigerator 1.

[0245] Through the above arrangement, when the drawer body 111 is placed inside the drawer shell 112, the drawer body 111 and the drawer shell 112 form a closed state at normal pressure, and it is most effective to perform the oxygen reduction operation at this time. At the same time, a second gas-controlled membrane assembly 102 is arranged on the top of the fresh-keeping drawer 11, and the gas flowing out of the fresh-keeping drawer 11 passes through the second gas-controlled membrane assembly 102, so that compared with other molecules, more oxygen enters the gas collection chamber through the gas-controlled membrane assembly, and finally the oxygen content of the gas extracted by the vacuum pump is higher than the oxygen content of the gas in the fresh-keeping drawer 11, thereby realizing the oxygen reduction action of the fresh-keeping drawer 11 and improving the preservation quality of the food in the fresh-keeping drawer 11.

[0246] 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 1, a gas circulation path is formed among the refrigerator 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the box 100. When the vacuum pump assembly 8 extracts the air in the fresh-keeping drawer 11, the formed air flow circulation is utilized to realize the fresh air ventilation function of the fresh-keeping drawer 11, so as to take away the carbon dioxide and other gases generated during the storage process that are not conducive to the preservation of food, thereby forming gas replacement.

[0247] In some implementations of this embodiment, a second door closing detection assembly 92 is provided on the opening side of the drawer shell 112 for detecting whether the drawer shell 112 and the drawer body 111 form a closed space at normal pressure.

[0248] When the drawer body 111 moves to the bottom toward the inside of the drawer shell 112 , it is determined that the fresh-keeping drawer 11 is in a closed state at this time, and the drawer body 111 and the drawer shell 112 form a relatively closed space under normal pressure.

[0249] It can be known that when the drawer shell 112 and the drawer body 111 form a closed space at normal pressure, the opening and closing of the door body can be judged to perform the fresh air and oxygen reduction function of the fresh-keeping drawer 11, or the fresh air and oxygen reduction function of the fresh-keeping drawer 11 can be directly performed.

[0250] In some embodiments, before performing the fresh air and oxygen reduction function of the fresh-keeping drawer 11, it is first determined whether the fresh-keeping drawer 11 is in a closed state. When the fresh-keeping drawer 11 is in a closed state, the fresh air and oxygen reduction function is performed normally; when the fresh-keeping drawer 11 is not in a closed state, an alarm may be issued or the fresh air and oxygen reduction function may be started at the same time as the alarm.

[0251] In some implementations of this embodiment, oxygen reduction work can be performed on the refrigerating chamber 1 and the fresh-keeping drawer 11 simultaneously or one after the other.

[0252] The controller 6 is configured such that, after the refrigerator is powered on, the vacuum pump assembly 8 evacuates the refrigerating chamber 1 and the fresh-keeping drawer 11, and discharges the evacuated gas to other compartments or outside the cabinet 100, so as to form a pressure difference inside and outside the refrigerating chamber 1 and inside and outside the fresh-keeping drawer 11;

[0253] The air outside the box 100 enters the refrigerating chamber 1 through the first circulation gap to form an airflow circulation path among the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the box 100, thereby replacing part of the gas in the refrigerating chamber 1;

[0254] A part of the gas in the refrigerator compartment 1 is drawn out by the vacuum pump assembly 8 through the first gas-adjusting membrane assembly 101, and a part of the gas enters the fresh-keeping drawer 11 through the second flow gap, so as to form an air circulation path of the refrigerator compartment 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the box 100, thereby replacing part of the gas in the fresh-keeping drawer 11;

[0255] The oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the fresh-keeping drawer 11 at least for a period of time, and the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content of the gas in the refrigerator 1 at least for a period of time. So that the relative oxygen content of the gas in the refrigerator 1 is lower than the relative oxygen content of the gas outside the box 100 at least for a period of time; the relative oxygen content of the gas in the fresh-keeping drawer 11 is lower than the relative oxygen content of the gas in the refrigerator 1 at least for a period of time.

[0256] Through the above-mentioned arrangement, a first air flow circulation path among the refrigerating chamber 1, the vacuum pump assembly 8 and the outside of the box body 100, and a second air flow circulation path among the refrigerating chamber 1, the fresh-keeping drawer 11, the vacuum pump assembly 8 and the outside of the box body 100 are formed, thereby realizing the fresh air oxygen reduction function of the refrigerating chamber 1 and the fresh-keeping drawer 11.

[0257] At the same time, the fresh air deoxygenation work of the fresh drawer 11 is accelerated under the support of the fresh air deoxygenation action of the refrigerator 1. The gas in the refrigerator 1 enters the fresh drawer 11, which not only promotes the air change of the fresh drawer 11, but also accelerates the air circulation of the refrigerator 1 itself.

[0258] Reference Fig.16 , explaining the fresh air oxygen reduction control logic of the fresh-keeping drawer 11.

[0259] The refrigerator is powered on (step S1601);

[0260] Whether the fresh-keeping drawer 11 is in a closed state (step S1602);

[0261] In step S1602, if the fresh-keeping drawer 11 is in a closed state, step S1603 is executed, and the vacuum pump assembly 8 evacuates air from the fresh-keeping drawer 11;

[0262] In step S1602, if the fresh-keeping drawer 11 is not in the closed state, step S1604 is executed, and the refrigerator alarms or the vacuum pump assembly 8 performs vacuuming in a preset working state.

[0263] In the above steps, when the fresh-keeping drawer 11 is not in a closed state, the vacuum pump assembly 8 can pump air according to a preset working state to prepare the fresh-keeping drawer 11, and then perform normal pumping after detecting that the fresh-keeping drawer 11 is closed.

[0264] In the preset working state, the working frequency of the vacuum pump assembly 8 is greater than the working frequency of the vacuum pump assembly 8 in the normal exhaust state, so as to form a rapid replacement of airflow in a small area in the fresh-keeping drawer 11 .

[0265] In some implementations of this embodiment, in order to better adjust the oxygen content in each compartment of the refrigerator, the refrigerator is also provided with a regulating valve 5, which is used to control whether the first atmosphere-controlled membrane assembly 101 and the vacuum pump assembly 8 and the second atmosphere-controlled membrane assembly 102 and the vacuum pump assembly 8 are connected.

[0266] Exemplarily, the regulating valve 5 may be configured as a three-way valve, and the oxygen in the refrigerating chamber 1 and / or the fresh-keeping drawer 11 may be selectively reduced by adjusting the on-off state of the regulating valve 5 .

[0267] Based on the above, the controller 6 is configured to receive the oxygen reduction instruction of the corresponding compartment, control the state of the regulating valve 5, and implement the oxygen reduction action of the corresponding compartment.

[0268] It can be known that the refrigerating chamber 1 and the fresh-keeping drawer 11 can be oxygenated at the same time to expand the size of the low-oxygen space to meet the user's demand for low-oxygen storage of food.

[0269] Reference Fig.12 , illustrating the control logic of switching the refrigerating chamber 1 and / or the fresh-keeping drawer 11 to reduce oxygen in the embodiment of the present application.

[0270] Determine whether the oxygen reduction instruction of the refrigerating chamber 1 is received (step S1201);

[0271] In step S1201, if the oxygen reduction instruction of the refrigerator compartment 1 is received, step S1202 is executed to determine whether the oxygen reduction instruction of the fresh-keeping drawer 11 is received;

[0272] In step S1202, if the oxygen reduction instruction is received from the fresh-keeping drawer 11, step S1203 is executed to adjust the regulating valve 5, and the vacuum pump assembly 8 is connected with the first atmosphere-controlled membrane assembly 101 and the second atmosphere-controlled membrane assembly 102;

[0273] In step S1202, if no oxygen reduction instruction is received from the fresh-keeping drawer 11, step S1204 is executed to adjust the regulating valve 5, and the vacuum pump assembly 8 is connected to the first gas-controlled membrane assembly 101;

[0274] In step S1201, if the oxygen reduction instruction from the refrigerator compartment 1 is not received, step S1205 is executed to determine whether the oxygen reduction instruction from the fresh-keeping drawer 11 is received;

[0275] In step S1205, if the oxygen reduction instruction is received from the fresh-keeping drawer 11, step S1206 is executed to adjust the regulating valve 5, and the vacuum pump assembly 8 is connected to the second gas-controlled membrane assembly 102;

[0276] In step S1205 , if no oxygen reduction instruction is received from the fresh-keeping drawer 11 , step S1207 is executed to adjust the regulating valve 5 , so that the vacuum pump assembly 8 is disconnected from the first modified atmosphere membrane assembly 101 and the second modified atmosphere membrane assembly 102 .

[0277] 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 , the vacuum pump assembly 11 performs fresh air oxygen reduction operation on the refrigerating chamber 1 and the fresh-keeping drawer 11 .

[0278] During this process, the air outside the box 100 enters the refrigerating chamber 1 through the first circulation gap to form an air circulation path among the refrigerating chamber 1, the vacuum pump assembly 11 and the outside of the box 100, thereby replacing part of the gas in the refrigerating chamber 1; part of the gas in the refrigerating chamber 1 is extracted by the vacuum pump assembly 11 through the first gas-conditioning membrane assembly 101, and part of the gas enters the fresh-keeping drawer 11 through the second circulation gap to form an air circulation path among the refrigerating chamber 1, the fresh-keeping drawer 11, the vacuum pump assembly 11 and the outside of the box 100, thereby replacing part of the gas in the fresh-keeping drawer 11; thereby achieving the purpose of fresh air ventilation and oxygen reduction between the two chambers of the refrigerating chamber 1 and the fresh-keeping drawer 11.

[0279] In some implementations of this embodiment, the odor detection device is disposed in the refrigerating chamber 1 to detect the odor concentration in the refrigerating chamber 1. The odor detection device disposed in the refrigerating chamber 1 is defined as a first odor detection device. The odor detection device can at least identify volatile amine substances and volatile nitrogen substances.

[0280] The controller 6 is configured to, when the odor concentration in the cold storage chamber 1 detected by the odor detection device reaches a first preset odor concentration threshold, turn on the vacuum pump assembly 11, and use the vacuum pump assembly 11 to evacuate the cold storage chamber 1 to promote air circulation inside and outside the cold storage chamber 1.

[0281] In some implementations of this embodiment, an odor detection device is disposed in the fresh-keeping drawer 11 to detect the concentration of odor in the fresh-keeping drawer 11. The odor detection device disposed in the fresh-keeping drawer 11 is defined as a second odor detection device.

[0282] The controller 6 is configured to, when the odor concentration in the fresh-keeping drawer 11 detected by the second odor detection device reaches a second preset odor concentration threshold, turn on the vacuum pump assembly 11, and use the vacuum pump assembly 11 to evacuate the fresh-keeping drawer 11 to promote air circulation inside and outside the fresh-keeping drawer 11.

[0283] In order to further improve the efficiency of oxygen reduction, the controller 6 is also configured to turn on the refrigeration fan 15 to accelerate the air flow in the refrigeration chamber 1 when the vacuum pump is working.

[0284] During the operation of the vacuum pump, there are two states of the refrigerator: refrigeration or non-refrigeration. When the refrigerator is in the refrigeration state, it is considered that the refrigeration fan 15 is in the on state and does not need to be turned on again.

[0285] When the refrigerator is not refrigerating, the refrigeration fan 15 is turned on. The refrigeration work of the refrigeration system is not within the scope of improvement of the present application and will not be described in detail here.

[0286] In some implementations of the present embodiment, the controller 6 is configured to, when food is placed in the cold storage chamber 1, receive the image captured by the image acquisition device 3 in the cold storage chamber 1, obtain the type of food and thereby obtain the first required oxygen content range of the food, turn on the vacuum pump assembly 8, and adjust the regulating valve 5 to connect the cold storage chamber 1 with the vacuum pump assembly 8; when the oxygen concentration detected by the oxygen concentration detection device 4 reaches the upper limit value of the first required oxygen content range, turn off the vacuum pump assembly 8.

[0287] In some implementations of this embodiment, the controller 6 is further configured to, when food is placed in the fresh-keeping drawer 11, receive the image captured by the image acquisition device 3 in the fresh-keeping drawer 11, obtain the type of food and obtain the second required oxygen content range of the food accordingly, start the vacuum pump assembly 8, and adjust the regulating valve 5 to connect the fresh-keeping drawer 11 with the vacuum pump assembly 8;

[0288] When the oxygen concentration in the fresh-keeping drawer 11 reaches the upper limit of the second required oxygen content range, the vacuum pump assembly 8 is turned off.

[0289] Reference Fig.13 , illustrating another control logic of oxygen reduction of the refrigerating chamber 1 in the embodiment of the present application.

[0290] The image acquisition device 3 acquires the image in the refrigerating chamber 1 and sends it to the controller 6 (step S1301);

[0291] Obtaining a corresponding first required oxygen content range (step S1302);

[0292] Control the vacuum pump assembly 8 to start (step S1303);

[0293] Determine whether the oxygen concentration in the refrigerating chamber 1 reaches the upper limit of the first required oxygen content range (step S1304);

[0294] In step S1304, if the oxygen concentration reaches the upper limit of the first required oxygen content range, step S1305 is executed to turn off the vacuum pump assembly 8;

[0295] In step S1304 , if the oxygen concentration does not reach the upper limit of the first required oxygen content range, step 1304 is executed.

[0296] In the above steps, the required oxygen content range is determined based on the type of food obtained by image recognition, and oxygen reduction actions are performed for different types of food to achieve precise oxygen reduction, which can better meet the user's refined storage needs.

[0297] In some implementations of this embodiment, the refrigerator further includes other storage compartments (not shown in the figure), which can be arranged inside the box body 100 or outside the box body 100, and the storage compartment includes an oxygen inlet connected to the air outlet end of the vacuum pump assembly 8 to receive gas from the gas collection chamber.

[0298] The vacuum pump assembly 8 is configured to suck the gas in the refrigerating chamber 1 and / or the fresh-keeping drawer 11 into the gas collecting chamber through the pipeline assembly 7, so that more oxygen in the air around the modified atmosphere membrane assembly than nitrogen around the modified atmosphere membrane assembly passes through the modified atmosphere membrane assembly into the gas collecting chamber, so as to reduce the oxygen concentration in the refrigerating chamber 1 and / or the fresh-keeping drawer 11;

[0299] The gas in the gas collection chamber enters the storage compartment through the vacuum pump assembly 8, so that a high oxygen concentration space is formed in the storage compartment.

[0300] A nitrogen-rich and oxygen-poor gas atmosphere is formed in the refrigerator 1 or the fresh-keeping drawer 11 for preserving fruits and vegetables, and a high-oxygen gas atmosphere with an oxygen concentration of 22%-28% is formed in the above-mentioned high-oxygen concentration space for preserving meat.

[0301] Of course, a gas collection chamber may also be provided at the exhaust port of the vacuum pump assembly 8, and then another storage compartment requiring high oxygen conditions is selectively connected to the gas collection chamber.

[0302] In some implementations of this embodiment, the air outlet of the vacuum pump assembly 8 can also be connected to the outside of the box 100, and the controller 6 is configured to discharge the extracted gas out of the box 100 when the oxygen content in the storage room reaches the lower limit of the preset oxygen concentration range but the vacuum pump assembly 8 has not stopped the vacuum pumping action.

[0303] Reference Fig.14 , describing the control logic of oxygenation of the storage compartment in the embodiment of the present application.

[0304] Receiving an oxygenation instruction from a storage compartment (step S1401);

[0305] Turn on the vacuum pump assembly 8 (step S1402);

[0306] Determine whether the oxygen content in the storage room reaches the lower limit of the preset oxygen concentration range (S1403);

[0307] In step S1403, if the oxygen content reaches the lower limit of the preset oxygen concentration range, step S1404 is executed to determine whether the oxygen concentration of the corresponding exhaust chamber reaches the required oxygen content range;

[0308] In step S1404, if the oxygen concentration reaches the required oxygen content range, step S1405 is executed to turn off the vacuum pump assembly 8;

[0309] In step S1404, if the oxygen concentration does not reach the required oxygen content range, step S1406 is executed to allow the gas outlet of the vacuum pump assembly 8 to be connected to the outside of the box 100;

[0310] In step S1403, if the oxygen content does not reach the lower limit of the preset oxygen concentration range, step S1403 is executed.

[0311] In the above embodiment, the refrigerator includes a box body 100 having a top and a bottom arranged in the length direction, the box body 100 includes an outer shell 110 and an inner liner 120, the inner liner 120 is arranged inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110, and the installation space is used to form a heat preservation layer, and the inner liner 120 forms a refrigerator compartment 1, a freezer compartment 12 and a fresh-keeping drawer 11 inside. The refrigerator also includes a door body 2 for opening and closing the refrigerator compartment 1, an atmosphere-controlled membrane assembly arranged on the top of the refrigerator compartment 1, a vacuum pump assembly 8 arranged on the compressor compartment 13, and a vacuum pump assembly 8 for connecting a vacuum pump 11. The pump assembly 8 and the pipeline assembly 7 of the gas-adjusting membrane assembly, the vacuum pump assembly 8 is used to extract air from the refrigerating chamber 1 and / or the fresh-keeping drawer 11, one end of the pipeline assembly 7 is connected to the vacuum pump assembly 8, and the other end of the pipeline assembly 7 is connected to the gas-adjusting membrane assembly through the insulation layer, and the pipeline assembly 7 is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly 8. The controller 6 is configured so that when the door body 2 closes the refrigerating chamber 1, the vacuum pump assembly 8 is turned on, and the oxygen content of the gas extracted by the vacuum pump assembly 8 is higher than the oxygen content in the refrigerating chamber 1 for at least a certain period of time, so as to reduce the oxygen content in the refrigerating chamber 1. It helps the refrigerating chamber 1 to preserve perishable food such as meat and seafood, and improves the food preservation ability of the refrigerator.

[0312] At the same time, through the setting of pipelines, the extracted air with oxygen content higher than the oxygen content in the air is introduced into the compartment that needs oxygen enrichment, which effectively realizes the utilization of air and does not require or reduces the work of the device that produces oxygen.

[0313] In some implementations of this embodiment, a dehumidifier is installed at the air inlet of the storage compartment with oxygen enrichment requirement to prevent moisture in other compartments from entering the compartment and affecting storage. Exemplarily, the dehumidifier can be configured as a desiccant.

[0314] In some implementations of this embodiment, a sterilization device is installed at the air inlet of the storage compartment with oxygen-enriched demand to prevent bacteria from other compartments from entering and contaminating the oxygen-enriched storage compartment. Exemplarily, the sterilization device can be set as an ion generator or an ozone generator.

[0315] In some embodiments of the present application, the refrigerator further comprises a first humidity detection device 14, which is arranged in the refrigerating chamber 1 and is used to detect the humidity in the refrigerating chamber 1. The humidity detection device in the refrigerating chamber is defined as the first humidity detection device 14. Exemplarily, the first humidity detection device 14 is arranged as a humidity sensor.

[0316] In some embodiments of the present application, the embodiment includes the hardware structure of the above embodiment, wherein the controller 6 is configured to receive the humidity value detected by the first humidity detection device 14, and when the humidity value reaches a preset humidity value, turn on the vacuum pump assembly 8, the vacuum pump assembly 8 evacuates the cold storage chamber 1 and discharges the extracted gas to other compartments or the outside of the box 100 to reduce the pressure in the cold storage chamber 1; the air outside the box 100 enters the cold storage chamber 1 through the circulation gap to at least form an airflow circulation path among the cold storage chamber 1, the vacuum pump assembly 8, and the outside of the box 100, so as to discharge the moisture in the cold storage chamber 1 out of the cold storage chamber 1 through the airflow circulation.

[0317] Through the above arrangement, the gas in the cold storage room 1 is extracted by using the vacuum pump assembly 8. Since the first modified atmosphere membrane assembly is arranged at the gas outlet position of the cold storage room 1, the gas is sucked out through the first modified atmosphere membrane assembly, so that more oxygen in the gas in the cold storage room 1 is sucked out than other gases. The air outside the box 100 enters the cold storage room 1 through the first circulation gap, and the water vapor in the air in the cold storage room 1 is taken away by the air circulation, thereby effectively reducing the humidity in the cold storage room 1.

[0318] In some implementations of this embodiment, the controller 6 is configured to reduce the operating frequency of the vacuum pump assembly 8 or shut down the vacuum pump assembly 8 to slow down or stop the airflow circulation in the cold storage chamber 1 when the humidity value drops to a second preset humidity value.

[0319] Reference Fig.15 , illustrating the anti-condensation control logic of the refrigerating chamber 1 in the present application.

[0320] Receiving the humidity value of the refrigerating chamber 1 detected by the first humidity detection device 14 (step S1501);

[0321] Determine whether the humidity value reaches a first preset humidity value (step 1502);

[0322] In step S1502, when the humidity value reaches the first preset humidity value, step S1503 is executed to start the vacuum pump assembly 8;

[0323] Determine whether the humidity value drops to a second preset humidity value (step S1505);

[0324] In step S1505, if the humidity value is reduced to the second preset humidity value, step 1506 is executed to turn off the vacuum pump assembly 8 or reduce the operating frequency of the vacuum pump assembly 8;

[0325] In step S1505, if the humidity value does not drop to the second preset humidity value, step S1507 is executed to maintain the working state of the vacuum pump assembly 8;

[0326] In step S1502 , when the humidity value does not reach the first preset humidity value, step S1504 is executed to maintain the working state of the vacuum pump assembly 8 .

[0327] By controlling the working state of the vacuum pump assembly 8, the humidity value in the refrigerating chamber 1 is controlled, thereby controlling the condensation in the refrigerating chamber 1, avoiding condensation in the refrigerating chamber 1, and improving the refrigeration effect.

[0328] It can be known that the above technical solution is also used in the fresh-keeping drawer 11. The humidity value of the air in the fresh-keeping drawer 11 is controlled by controlling the working state of the vacuum pump assembly 8 related to the fresh-keeping drawer 11, thereby controlling the condensation situation in the fresh-keeping drawer 11.

[0329] In the above embodiment, the refrigerator includes a box body 100 having a top and a bottom arranged along the length direction, the box body 100 includes an outer shell 110 and an inner liner 120, the inner liner 120 is arranged inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110, and the installation space is used to form a heat preservation layer. The interior of the inner liner 120 forms a refrigerator compartment 1, a freezer compartment 12 and a fresh-keeping drawer 11, and the refrigerator also includes a door body 2 for opening and closing the refrigerator compartment 1, an atmosphere-controlled membrane assembly arranged on the top of the refrigerator compartment 1, a vacuum pump assembly 8 arranged on the compressor compartment 13, and a pipeline assembly 7 for connecting the vacuum pump assembly 8 and the atmosphere-controlled membrane assembly, the vacuum pump assembly 8 is used to extract air from the refrigerator compartment 1 and / or the fresh-keeping drawer 11, and the pipeline assembly 7 One end of the pipe assembly 7 is connected to the vacuum pump assembly 8, and the other end of the pipe assembly 7 is connected to the gas-adjusting membrane assembly through the insulation layer. The pipe assembly 7 is used to provide a flow pipeline 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 refrigerating chamber 1 and discharges the extracted gas to other compartments or the outside of the box 100 to reduce the pressure in the refrigerating chamber 1. The air outside the box 100 enters the refrigerating chamber 1 through the circulation gap to at least form an air circulation path of the refrigerating chamber 1, the vacuum pump assembly 8, and the outside of the box 100, so that the water vapor in the refrigerating chamber 1 is discharged from the refrigerating chamber 1 through the air circulation. The water vapor in the air in the refrigerating chamber 1 is taken away by the air circulation, and the humidity in the refrigerating chamber 1 is effectively reduced. It is helpful for the refrigerating chamber 1 to preserve perishable ingredients such as meat and seafood, and improve the food preservation ability of the refrigerator.

[0330] In some implementations of this embodiment, the refrigerator further includes a second humidity detection device 141, which is disposed in the fresh-keeping drawer 11 and is used to detect the humidity value in the fresh-keeping drawer 11 and send it to the controller 6. Exemplarily, the second humidity detection device 141 is configured as a humidity sensor.

[0331] In some embodiments of the present application, the embodiment includes the hardware structure of the above embodiment, wherein the controller 6 is configured to receive the humidity value of the second humidity detection device 141, and when the humidity value reaches a third preset humidity value, turn on the vacuum pump assembly 8, the vacuum pump assembly 8 evacuates the fresh-keeping drawer 11, and discharges the evacuated gas to other compartments or the outside of the box 100 to reduce the pressure in the fresh-keeping drawer 11; the air in the refrigerator 1 enters the fresh-keeping drawer 11 through the second flow gap to form at least an airflow circulation path of the refrigerator 1, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the box 100, so as to discharge the moisture in the fresh-keeping drawer 11 out of the fresh-keeping drawer 11 through the airflow circulation.

[0332] Through the above arrangement, the gas in the fresh-keeping drawer 11 is extracted by using the vacuum pump assembly 8. Since the second atmosphere-controlled membrane assembly 102 is arranged at the air outlet position of the fresh-keeping drawer 11, the gas is sucked out through the second atmosphere-controlled membrane assembly 102, so that the oxygen in the gas in the fresh-keeping drawer 11 is sucked out more than other gases. The air in the refrigerator chamber 1 enters the refrigerator chamber 1 through the second circulation gap, and the excess moisture in the air in the fresh-keeping drawer 11 is taken away by air circulation, thereby effectively reducing the humidity in the fresh-keeping drawer 11.

[0333] In some embodiments, 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 air circulation.

[0334] In some implementations of this embodiment, the controller 6 is configured to reduce the operating frequency of the vacuum pump assembly 8 or turn off the vacuum pump assembly 8 to slow down or stop the airflow circulation inside and outside the fresh-keeping drawer 11 when the humidity value of the fresh-keeping drawer 11 drops to a fourth preset humidity value.

[0335] Reference Fig.17 , describing the anti-condensation control logic of the fresh-keeping drawer 11 in the present application.

[0336] Receiving the humidity value of the fresh-keeping drawer 11 detected by the second humidity detection device 141 (step S1701);

[0337] Determine whether the humidity value reaches a third preset humidity value (step S1702);

[0338] In step S1702, when the humidity value reaches the third preset humidity value, step S1703 is executed to start the vacuum pump assembly 8;

[0339] Determine whether the humidity value drops to a fourth preset humidity value (step S1705);

[0340] In step S1705, if the humidity value is reduced to the fourth preset humidity value, step S1706 is executed to turn off the vacuum pump assembly 8 or reduce the operating frequency of the vacuum pump assembly 8;

[0341] In step S1705, if the humidity value does not drop to the fourth preset humidity value, step S1707 is executed to maintain the working state of the vacuum pump assembly 8;

[0342] In step S1702, when the humidity value does not reach the third preset humidity value, step S1704 is executed to maintain the working state of the vacuum pump assembly 8.

[0343] By controlling the working state of the vacuum pump assembly 8, the humidity value in the fresh-keeping drawer 11 is controlled, thereby controlling the condensation in the fresh-keeping drawer 11, avoiding condensation in the fresh-keeping drawer 11, and improving the refrigeration effect.

[0344] In the above embodiment, the refrigerator includes a box body 100 having a top and a bottom arranged along the length direction, the box body 100 includes an outer shell 110 and an inner liner 120, the inner liner 120 is arranged inside the outer shell 110, and an installation space is formed between the inner liner 120 and the outer shell 110, and the installation space is used to form an insulation layer, and the inner liner 120 forms a refrigerator compartment 11, a freezer compartment 12 and a fresh-keeping drawer 11 inside. The refrigerator also includes a door body 2 for opening and closing the refrigerator compartment 11, an atmosphere-controlled membrane assembly arranged at the top of the refrigerator compartment 11, a vacuum pump assembly 8 arranged at the compressor compartment 13, and a pipeline assembly 7 for connecting the vacuum pump assembly 8 and the atmosphere-controlled membrane assembly, the vacuum pump assembly 8 is used to extract air from the refrigerator compartment 11 and / or the fresh-keeping drawer 11, and one end of the pipeline assembly 7 is connected to the vacuum pump assembly 8 is connected, and the other end of the pipeline assembly 7 is connected to the gas-adjusting membrane assembly through the insulation layer. The pipeline assembly 7 is used to provide a flow pipeline 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 the preset humidity value, the vacuum pump assembly 8 is turned on. The vacuum pump assembly 8 extracts air from the fresh-keeping drawer 11 and discharges the extracted gas to other compartments or the outside of the box 100 to reduce the pressure in the fresh-keeping drawer 11; the air in the refrigerator 11 enters the fresh-keeping drawer 11 through the circulation gap to at least form an air circulation path of the refrigerator 11, the fresh-keeping drawer 11, the vacuum pump assembly 8, and the outside of the box 100, so that the water vapor in the fresh-keeping drawer 11 is discharged from the fresh-keeping drawer 11 through the air circulation. The water vapor in the air in the fresh-keeping drawer 11 is taken away by the air circulation, and the humidity in the fresh-keeping drawer 11 is effectively reduced. It is helpful for the fresh-keeping drawer 11 to preserve perishable ingredients such as meat and seafood, and improve the food preservation ability of the refrigerator.

[0345] During the fresh air deoxygenation process in the refrigerator, outdoor bacteria will be introduced, and some bacteria and odor will also be generated during food storage, which will affect the storage effect of the refrigeration chamber 1 or the fresh-keeping drawer 11. The introduced bacteria may include planktonic bacteria suspended in the air, alcaligenes mucosa, alcaligenes pseudoalcaligenes, achromobacter, aerobacter, lactobacillus, leuconostoc and other bacteria contained in the air.

[0346] At the same time, during the fresh air oxygen reduction process, cross contamination between rooms will occur.

[0347] To solve the above problem, in some embodiments of the present application, the refrigerator is further provided with a sterilization module, and the sterilization module can be arranged in the refrigerating chamber 1. The sterilization module arranged in the refrigerating chamber 1 is defined as a first sterilization module.

[0348] Exemplarily, the first sterilization module can be configured as an ion generating device, which is used to generate ion groups and / or ozone for removing bacteria in the box 100. Generally speaking, the ion types in the ion group may include strong oxidizing ions, positive ions and negative ions, etc. Exemplarily, the strong oxidizing ions include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), ground state oxygen (O*), nitrogen oxides (NOx), and the types of bacteria in the box 100 include planktonic bacteria in the air in the refrigerator 1, attached bacteria attached to the inner wall of the refrigerator 1, attached bacteria on food, etc.

[0349] In the process of contact between air and ion group, ions can adsorb and decompose odor molecules and floating bacteria in the air. At the same time, ions will flow into the refrigerator 1 along with the air flow to remove bacteria attached to the inner wall of the refrigerator 1 or the surface of food.

[0350] It can be known that during the vacuum pump assembly 8's evacuation process, the air in the refrigerating chamber 1 will be evacuated, and the ion groups in the air will enter the first pipeline assembly along with the airflow to remove the attached bacteria and floating bacteria inside the first pipeline assembly.

[0351] In some embodiments of this embodiment, the refrigerator also includes a high-voltage power supply, which is used to provide a high-voltage voltage to the ion generating device so that it discharges to form an ion group, so as to facilitate the sterilization of the inside of the refrigerator. In this embodiment, the generation of ion concentration can be controlled by controlling the discharge rules of the high-voltage power supply.

[0352] In some implementations of this embodiment, refer to Figure 23-32 The ion generating device includes a shell 31 , in which a containing space 35 and an inlet 32 ​​and an outlet 33 communicating with the containing space 35 are arranged.

[0353] The device for generating ion groups is installed in the accommodating space 35. After the ion groups are generated, the airflow in the refrigerator compartment 1 or the fresh-keeping drawer 11 enters the accommodating space 35 from the inlet 32, reacts with the ion groups, and then flows back to the refrigerator compartment 1 or the fresh-keeping drawer 11 through the outlet 33. At the same time, the generated ion groups diffuse into the refrigerator compartment 1 or the fresh-keeping drawer 11 through the inlet 32 ​​and the outlet 33.

[0354] In some implementations of this embodiment, reference Figure 25-26 The ion generating device includes a strong oxidizing ion generating unit 362. The strong oxidizing ion generating unit 362 generates a large amount of strong oxidizing active substances and ions by using needle tip corona discharge. The strong oxidizing active substances include hydroxyl radicals (·OH), ozone (O3), atomic oxygen (O), ground state oxygen (O*), nitrogen oxides (NOx), etc., which diffuse into the interior of the refrigerator compartment 1, the inner wall of the fresh-keeping drawer 11 and the surface of food to effectively kill and remove attached bacteria. At the same time, the concentration of ozone (O3) can be controlled by applying a discharge control rule to control the ozone concentration below the user perception threshold. Exemplarily, the discharge control rule is the relationship between the applied voltage and the ozone concentration.

[0355] In some embodiments, the controller 6 controls the concentration of the generated strong oxidizing ions using the discharge control rule so that the concentration of the strong oxidizing ions is below a set threshold value, and the set threshold value is set according to the user's perception. Sterilization can be performed without the user's perception, which can effectively improve the user experience and also prevent the high concentration of the strong oxidizing ions from affecting the preservation of the food in the box 100.

[0356] In some embodiments, reference Fig. 27 , 32 The strong oxidizing ion generating unit 362 includes an emitting electrode structure 3622, one end of which is provided as a needle tip structure 3621. The emitting electrode structure 3622 is used to use the high voltage provided by the high voltage power supply to make the needle tip structure 3621 corona discharge to form a strong oxidizing ion group. Specifically, the needle tip structure 3621 is provided as two or more.

[0357] In some embodiments, reference Fig.25 The first sterilization module also includes a built-in fan 34, which is arranged in the shell 31 and on one side of the strong oxidizing ion generating unit 362. When sterilization is performed, the built-in fan 34 is turned on to promote air circulation in the space and accelerate the sterilization efficiency.

[0358] In some embodiments of the present application, the emitting electrode structure 3622 further includes a counter electrode and a bracket, wherein the bracket is detachably fixed in the accommodating space 35, and the counter electrode is mounted on the bracket.

[0359] The counter electrode comprises 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 a bracket at intervals.

[0360] A needle tip structure 3621 is protruding from one side of the high voltage electrode facing the collecting electrode, and discharge is performed in the counter electrode of the strong oxidizing ion generating unit 362 using the needle tip structure 3621 .

[0361] For example, the high-voltage electrode is connected to negative high voltage, and discharges at the needle tip structure 3621 to generate a large number of negative ions, which come into contact with bacteria and dust in the air, thereby playing a sterilizing role. Specifically, the opposite electrode is grounded or the relative voltage of the opposite electrode to the high-voltage electrode of the needle tip structure 3621 is 0, and the DC negative high voltage range of the two needle tip electrodes is -2.5 to -5 kV.

[0362] In some implementations of this embodiment, the ion generating device further includes a positive and negative ion generating unit 361, through which the floating bacteria in the air in the refrigerator can be removed efficiently and quickly.

[0363] Reference Fig.28 The positive and negative ion generating unit 361 further includes a positive electrode 3611 and a negative electrode 3612 arranged on one side of the built-in fan 34 near the outlet 33. The positive electrode 3611 and the negative electrode 3612 are arranged along the length direction of the shell 31. The positive electrode 3611 and the negative electrode 3612 use the high voltage provided by the high voltage power supply to form positive ion groups and negative ion groups.

[0364] 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 the present application can be applied to other electrodes, for example, 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: 2-9 kV. It should be noted that the positions of the positive high voltage electrode and the negative high voltage electrode are not limited in the figure, and the positions of the positive and negative high voltage electrodes can be interchanged.

[0365] In some embodiments of the present application, in order to solve the problem of bacteria introduced into the refrigerating chamber 1 due to the fresh air oxygen reduction function, the controller 6 is configured to manually or automatically start the first sterilization module after completing the fresh air oxygen reduction function, and the first sterilization module generates ion groups to sterilize the air in the refrigerating chamber 1, the inner wall of the refrigerating chamber 1 and the food, thereby improving the preservation conditions of the food in the refrigerating chamber 1.

[0366] In some implementations of this embodiment, the first sterilization module can start working after the vacuum pump assembly 8 is turned off or when the vacuum pump assembly 8 is about to be turned off to solve the problem of bacteria outside the box 100 introduced into the refrigeration chamber 1 during the fresh air oxygen reduction process.

[0367] It should be noted that during normal storage in the refrigerating chamber 1, the ion generating device will be turned on at regular intervals to sterilize the refrigerating chamber 1, so as to remove attached bacteria and germs in the refrigerating chamber 1 and extend the shelf life of food.

[0368] In some embodiments, 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.

[0369] In some embodiments, the working time of the first sterilization module can also be controlled by detecting the bacterial content in the refrigerating chamber 1. When the bacterial content in the refrigerating chamber 1 reaches a first preset bacterial content, the first sterilization module is turned off; when the bacterial content in the refrigerating chamber 1 is not lower than the first preset bacterial content, the first sterilization module is kept working.

[0370] Reference Fig.18 , taking refrigerator room 1 as an example, the control logic of the sterilization action of the refrigerator after fresh air oxygen reduction is explained.

[0371] The vacuum pump assembly 8 evacuates the refrigerating chamber 1 (step S1801);

[0372] Determine whether the oxygen content in the refrigerating chamber 1 detected by the oxygen concentration detection device reaches a preset oxygen content (step S1802);

[0373] In step S1802, if the oxygen content in the refrigerating chamber 1 reaches the preset oxygen content, step S1803 is executed to turn off the vacuum pump assembly 8; then step S1804 is executed to turn on the high voltage power supply, and the ion generating device generates ion groups;

[0374] Determine whether the working time of the ion generating device reaches the first preset working time (step S1805);

[0375] In step S1805, if the working time reaches the first preset working time, step S1806 is executed to turn off the high voltage power supply and the ion generating device;

[0376] In step S1805, if the working time does not reach the first preset working time, step S1805 is executed.

[0377] In step S1802, if the oxygen content in the refrigerating chamber 1 does not reach the preset oxygen content, step S1802 is executed.

[0378] In step S1805 , whether to close the first sterilization module can also be controlled by judging the bacteria content in the refrigerating chamber 1 .

[0379] In some implementations of this embodiment, during the sterilization process of the cold storage chamber 1, it is necessary to detect whether the door is open. When the door is open, the first sterilization module is closed; within a certain period of time, when it is detected that the door is closed again, the first sterilization module is opened again to complete the sterilization work of the cold storage chamber 1.

[0380] In some embodiments, the opening time of the door body can also be collected. When the opening time of the door body reaches the preset opening time, the first sterilization module is closed. When the opening time of the door body does not reach the preset opening time and the first sterilization module is in the open state, the first sterilization module is kept open.

[0381] Through the above arrangement, frequent starting and stopping of the first sterilization module is avoided.

[0382] In some embodiments of the present application, a sterilization module is also provided in the fresh-keeping drawer 11 of the refrigerator. The sterilization module provided in the fresh-keeping drawer 11 is defined as a second sterilization module, which is used to remove floating bacteria in the air in the fresh-keeping drawer 11, bacteria attached to the inner wall of the fresh-keeping drawer 11 and the food, etc.

[0383] 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 the bacteria in the space.

[0384] In some embodiments, the first sterilization module can at least release ozone, and at least use a portion of the ozone to sterilize and remove odors, so as to meet the daily sterilization needs of the refrigerating chamber 1 and the bacterial contamination problem caused by the fresh air deoxygenation process of the refrigerating chamber 1 .

[0385] In some embodiments, the second sterilization module can at least release ozone, and at least use a portion of the ozone to sterilize and remove odors, so as to meet the daily storage sterilization of the fresh-keeping drawer 11 and the bacterial contamination problem caused by the fresh air deoxygenation process of the fresh-keeping drawer 11.

[0386] It can be known that during the vacuum pump assembly 8's evacuation process, the air in the fresh-keeping drawer 11 will be evacuated, and the ion groups in the air will enter the second pipeline assembly along with the airflow to remove the attached bacteria and floating bacteria inside the second pipeline assembly.

[0387] In some embodiments of the present application, in order to solve the problem of bacteria introduced into the fresh-keeping drawer 11 due to the fresh air oxygen reduction function, the controller 6 is configured to manually or automatically start the second sterilization module after completing the fresh air oxygen reduction function, and the second sterilization module generates ion groups to sterilize the air in the fresh-keeping drawer 11, the inner wall of the fresh-keeping drawer 11 and the food inside, thereby improving the preservation conditions of the food in the fresh-keeping drawer 11.

[0388] In some implementations of this embodiment, the second sterilization module can start working after the vacuum pump assembly 8 is turned off or when the vacuum pump assembly 8 is about to be turned off to solve the problem of bacteria outside the box 100 or inside the refrigerator 1 introduced by the fresh-air drawer 11 during the fresh air oxygen reduction process.

[0389] It should be noted that during the normal storage process of the fresh-keeping drawer 11, the second sterilization module will be turned on at regular intervals to sterilize the fresh-keeping drawer 11 to remove attached bacteria and floating bacteria in the fresh-keeping drawer 11 and extend the shelf life of the food.

[0390] In some embodiments, the working time of the second sterilization module can also be set by a preset working time. Specifically, when the working time of the second sterilization module reaches the second preset working time, the second sterilization module is turned off.

[0391] In some embodiments, the working time of the second sterilization module can also be controlled by detecting the bacterial content in the fresh-keeping drawer 11. When the bacterial content in the fresh-keeping drawer 11 is lower than the second preset bacterial content, the second sterilization module is turned off; when the bacterial content in the fresh-keeping drawer 11 is not lower than the second preset bacterial content, the second sterilization module is kept working.

[0392] It should be noted that the second preset bacterial content is a preset bacterial content suitable for food preservation in the fresh-keeping drawer 11 considering all aspects of the performance of the fresh-keeping drawer 11. The first preset bacterial content is a preset bacterial content suitable for food preservation in the refrigerator 1 considering all aspects of the performance of the refrigerator 1.

[0393] Reference Fig.19 , taking the fresh-keeping drawer 11 as an example, the control logic of the sterilization action of the refrigerator after fresh air oxygen reduction is explained.

[0394] The vacuum pump assembly 8 evacuates air from the fresh-keeping drawer 11 (step S1901);

[0395] Determine whether the oxygen content in the fresh-keeping drawer 11 detected by the oxygen concentration detection device reaches the corresponding preset oxygen content (step S1902);

[0396] In step S1902, if the oxygen content in the fresh-keeping drawer 11 reaches the preset oxygen content, step S1903 is executed to turn off the vacuum pump assembly 8; then step S1904 is executed to turn on the high-voltage power supply, and the ion generating device generates ion groups;

[0397] Determine whether the working time of the ion generating device reaches the second preset working time (step S1905);

[0398] In step S1905, if the working time reaches the second preset working time, step S1906 is executed to turn off the high voltage power supply and the ion generating device;

[0399] In step S1905, if the working time does not reach the second preset working time, step S1905 is executed.

[0400] In step S1902, if the oxygen content in the fresh-keeping drawer 11 does not reach the preset oxygen content, step S1902 is executed.

[0401] In step S1905 , whether to close the second sterilization module can also be controlled by judging the bacteria content in the fresh-keeping drawer 11 .

[0402] In some implementations of this embodiment, during the sterilization process of the fresh-keeping drawer 11, it is necessary to detect whether the fresh-keeping drawer 11 is opened. When the fresh-keeping drawer 11 is opened, the second sterilization module is turned off. When it is detected that the fresh-keeping drawer 11 is closed again, the second sterilization module is turned on again to complete the sterilization work of the fresh-keeping drawer 11.

[0403] In some embodiments, the opening time of the fresh-keeping drawer 11 can also be collected. When the opening time of the fresh-keeping drawer 11 reaches the preset drawer time, the second sterilization module is closed. When the opening time of the fresh-keeping drawer 11 does not reach the preset drawer time and the second sterilization module is in the on state, the second sterilization module is kept on.

[0404] Through the above arrangement, frequent starting and stopping of the second sterilization module is avoided.

[0405] In some embodiments, after the vacuum pump assembly 8 is turned off, the high voltage power supply is turned on, and the positive and negative ion generating unit 361 releases positive and negative ion groups to remove bacteria outside the box 100 or inside the cold storage chamber 1 introduced due to gas replacement during the fresh air oxygen reduction process.

[0406] By turning on only the positive and negative ion generating units 361 after fresh air oxygen reduction, the floating bacteria in the compartment where fresh air oxygen reduction is performed can be removed, thereby achieving precise sterilization and reducing unnecessary energy consumption.

[0407] In some implementations of this embodiment, in addition to being turned on according to the closing action of the vacuum pump assembly 8, during the fresh air oxygen reduction process, whether to turn on the first sterilization module can be controlled by judging the bacterial content in the refrigerating chamber 1.

[0408] Specifically, during the fresh air oxygen reduction process in the refrigerating chamber 1, when the bacteria content in the refrigerating chamber 1 reaches the third preset bacteria content, the first sterilization module is turned on. It can be known that the third preset bacteria content is set as the bacteria content when the refrigerating chamber 1 needs to be sterilized.

[0409] Similarly, in some embodiments, in addition to being turned on according to the closing action of the vacuum pump assembly 8, during the fresh air deoxygenation process of the fresh-keeping drawer 11, the second sterilization module can also be controlled by judging the bacterial content in the fresh-keeping drawer 11 to determine whether to turn on the second sterilization module.

[0410] Specifically, during the fresh air deoxygenation process of the fresh-keeping drawer 11, when the bacteria content in the fresh-keeping drawer 11 reaches the fourth preset bacteria content, the second sterilization module is turned on. It can be known that the third preset bacteria content is set to the bacteria content when the fresh-keeping drawer 11 needs to be sterilized.

[0411] Reference Fig. 20 , taking the refrigerating chamber 1 as an example, the control logic of the first sterilization module in the process of fresh air oxygen reduction in the refrigerating chamber 1 is explained.

[0412] The vacuum pump assembly 8 evacuates the refrigerating chamber 1 (step S2001);

[0413] Determine whether the bacteria content in the refrigerating chamber 1 reaches a third preset bacteria content (step S2002);

[0414] In step S2002, if the bacteria content in the refrigerating chamber 1 reaches the third preset bacteria content, step S2003 is executed to turn on the high voltage power supply, and the first sterilization module releases the ion group;

[0415] In step S2002, if the bacteria content in the refrigerating chamber 1 does not reach the third preset bacteria content, step S2002 is executed.

[0416] Through the above steps, the sterilization module is turned on not only after the fresh air oxygen reduction action is completed, but also to detect the bacterial content during the fresh air oxygen reduction process, thereby preventing the bacteria in the cold storage chamber 1 from contaminating other components during the fresh air oxygen reduction process.

[0417] It should be noted that the fresh-keeping drawer 11 can also detect the bacterial content during the fresh air oxygen reduction operation to prevent the bacteria in the fresh-keeping drawer 11 from contaminating other components.

[0418] In some embodiments of the present application, the refrigerator includes a vacuum pump assembly 8, a pipeline assembly and an atmosphere-controlled membrane assembly with the refrigerating chamber 1 or the fresh-keeping drawer 11, which are used to realize fresh air ventilation of the refrigerating chamber 1 while reducing the oxygen content of the air in the refrigerating chamber 1, and realize fresh air ventilation of the fresh-keeping drawer 11 while reducing the oxygen content of the air in the fresh-keeping drawer 11; at the same time, the refrigerator also includes a sterilization module, which is turned on after the fresh air oxygen reduction action is performed to remove bacteria outside the box 100 or in the refrigerating chamber 1 introduced due to airflow replacement, reduce the bacterial content in the refrigerating chamber 1 or the fresh-keeping drawer 11, and improve the storage quality of the refrigerating chamber 1 or the fresh-keeping drawer 11.

[0419] In some embodiments of the present application, in order to prevent bacteria in the refrigerating chamber 1 from entering the first pipeline assembly, the vacuum pump assembly 8 or other compartments through air circulation to cause cross contamination, the sterilization function is turned on before the fresh air oxygen reduction function is performed.

[0420] 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 an ion group to remove attached bacteria and floating bacteria in the cold storage chamber 1, thereby avoiding contamination of the first controlled atmosphere membrane assembly 101, the first pipeline assembly and the vacuum pump assembly 8 during the gas replacement process, avoiding cross contamination between chambers, and extending the use time of the controlled atmosphere membrane assembly and the use time of the refrigerator.

[0421] In some embodiments, after the vacuum pump assembly 8 is turned off, the first sterilization module may continue to work for a period of time to ensure the sterilization effect in the refrigerating chamber 1 .

[0422] In some implementations of this embodiment, during the sterilization process of the cold storage chamber 1, it is necessary to detect whether the door is open. When the door is open, the first sterilization module is closed; within a certain period of time, when it is detected that the door is closed again, the first sterilization module is opened again to complete the sterilization work of the cold storage chamber 1.

[0423] In some embodiments, the opening time of the door body can also be collected. When the opening time of the door body reaches the preset opening time, the first sterilization module is closed. When the opening time of the door body does not reach the preset opening time and the first sterilization module is in the open state, the first sterilization module is kept open.

[0424] In some implementations of the present embodiment, when the cold storage chamber 1 is being sterilized and the fresh air oxygen reduction action is being performed, it is necessary to detect whether the door body is open. When the door body is open, the first sterilization module and the vacuum pump assembly 8 are turned off. Within a certain period of time, when it is detected that the door body is closed again, the first sterilization module is turned on again to complete the sterilization work of the cold storage chamber 1, and the vacuum pump assembly 8 is turned on to evacuate the cold storage chamber 1.

[0425] In some embodiments, the opening time of the door body can also be collected. When the opening time of the door body reaches the preset opening time, the first sterilization module and the vacuum pump assembly 8 are closed. When the opening time of the door body does not reach the preset opening time and the first sterilization module is in the open state, the first sterilization module and the vacuum pump assembly 8 are kept open.

[0426] Through the above arrangement, frequent starting and stopping of the first sterilization module is avoided.

[0427] Reference Fig.21 , taking refrigerator room 1 as an example, the control logic of the sterilization work of the refrigerator before fresh air oxygen reduction is explained.

[0428] Receiving a control instruction for the vacuum pump assembly 8 to start working (step S2101);

[0429] The high voltage is turned on, and the first sterilization module generates ion clusters (step S2102);

[0430] The vacuum pump assembly 8 evacuates the refrigerating chamber 1 (step S2103);

[0431] Determine whether the oxygen content in the refrigerating chamber 1 detected by the oxygen concentration detection device reaches a preset oxygen content (step S2104);

[0432] In step S2104, if the oxygen content in the refrigerating chamber 1 reaches the preset oxygen content, step S2105 is executed to turn off the vacuum pump assembly 8;

[0433] Determine whether the closing time of the vacuum pump assembly 8 reaches the preset closing time (step S2106);

[0434] In step S2106, if the closing time of the vacuum pump assembly 8 reaches the preset closing time, step S2107 is executed to turn off the high voltage power supply, and the first sterilization module stops generating ion groups;

[0435] In step S2106, if the closing time of the vacuum pump assembly 8 does not reach the preset closing time, step S2106 is executed;

[0436] In step S2104, if the oxygen content in the refrigerating chamber 1 does not reach the preset oxygen content, step S2104 is executed.

[0437] In some embodiments, the first sterilization module may be operated for a period of time before the fresh air oxygen reduction action is performed, that is, the vacuum pump assembly 8 is turned on again to ensure the sterilization effect of the first sterilization module and reduce bacterial cross contamination.

[0438] In some implementations of this embodiment, the first sterilization module is disposed near the first modified atmosphere membrane assembly 101 to improve the efficiency of sterilizing the extracted airflow.

[0439] In some embodiments of the present application, in order to prevent bacteria in the fresh-keeping drawer 11 from entering the second pipeline assembly, the vacuum pump assembly 8 or other compartments through air circulation to cause cross contamination, the sterilization function is turned on before the fresh air oxygen reduction function is performed.

[0440] 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 an ion group to remove attached bacteria and floating bacteria in the fresh-keeping drawer 11, thereby avoiding contamination of the second controlled atmosphere membrane assembly 102, the second pipeline assembly and the vacuum pump assembly 8 during the gas replacement process, avoiding cross contamination between chambers, and extending the use time of the controlled atmosphere membrane assembly and the use time of the refrigerator.

[0441] In some embodiments, after the vacuum pump assembly 8 is turned off, the second sterilization module may continue to work for a period of time to ensure the sterilization effect in the fresh-keeping drawer 11 .

[0442] In some implementations of this embodiment, during the sterilization process of the fresh-keeping drawer 11, it is necessary to detect whether the fresh-keeping drawer 11 is opened. When the fresh-keeping drawer 11 is opened, the second sterilization module is turned off; within a certain period of time, when it is detected that the fresh-keeping drawer 11 is closed again, the second sterilization module is turned on again to complete the sterilization work of the fresh-keeping drawer 11.

[0443] In some embodiments, the opening time of the fresh-keeping drawer 11 can also be collected. When the opening time of the fresh-keeping drawer 11 reaches the preset drawer time, the second sterilization module is closed. When the opening time of the fresh-keeping drawer 11 does not reach the preset drawer time and the second sterilization module is in the on state, the second sterilization module is kept on.

[0444] In some implementations of the present embodiment, when the fresh-keeping drawer 11 is being sterilized and the fresh air reduction oxygenation action is being performed, it is necessary to detect whether the fresh-keeping drawer 11 is open. When the fresh-keeping drawer 11 is open, the second sterilization module and the vacuum pump assembly 8 are turned off. Within a certain period of time, when it is detected that the fresh-keeping drawer 11 is closed again, the second sterilization module is turned on again to complete the sterilization work on the fresh-keeping drawer 11, and the vacuum pump assembly 8 is turned on to evacuate the fresh-keeping drawer 11.

[0445] In some embodiments, the opening time of the fresh-keeping drawer 11 can also be collected. When the opening time of the fresh-keeping drawer 11 reaches the preset drawer time, the second sterilization module and the vacuum pump assembly 8 are closed. When the opening time of the fresh-keeping drawer 11 does not reach the preset drawer time and the second sterilization module is in the on state, the second sterilization module and the vacuum pump assembly 8 are kept on.

[0446] Through the above arrangement, frequent starting and stopping of the second sterilization module is avoided.

[0447] Reference Fig. 22 , taking the fresh-keeping drawer 11 as an example, the control logic of the sterilization work of the refrigerator before fresh air reduction is explained.

[0448] Receiving a control instruction for the vacuum pump assembly 8 to start working (step S2201);

[0449] Turning on the high voltage, the second sterilization module generates ion clusters (step S2202);

[0450] The vacuum pump assembly 8 evacuates air from the fresh-keeping drawer 11 (step S2203);

[0451] Determine whether the oxygen content in the fresh-keeping drawer 11 detected by the oxygen concentration detection device reaches a preset oxygen content (step S2204);

[0452] In step S2204, if the oxygen content in the fresh-keeping drawer 11 reaches the preset oxygen content, step S2205 is executed to turn off the vacuum pump assembly 8;

[0453] Determine whether the closing time of the vacuum pump assembly 8 reaches the preset closing time (step S2206);

[0454] In step S2206, if the closing time of the vacuum pump assembly 8 reaches the preset closing time, step S2207 is executed to turn off the high voltage power supply, and the second sterilization module stops generating ion groups;

[0455] In step S2206, if the closing time of the vacuum pump assembly 8 does not reach the preset closing time, step S2206 is executed;

[0456] In step S2204, if the oxygen content in the fresh-keeping drawer 11 does not reach the preset oxygen content, step S2204 is executed.

[0457] In some embodiments, the second sterilization module may be operated for a period of time before the fresh air oxygen reduction action is performed, that is, the vacuum pump assembly 8 is turned on again to ensure the sterilization effect of the second sterilization module and reduce bacterial cross contamination.

[0458] In some implementations of this embodiment, the second sterilization module is disposed near the second modified atmosphere membrane assembly 102 to improve the efficiency of sterilizing the extracted airflow.

[0459] In some implementations of this embodiment, the sterilization module can also be configured as an ultraviolet lamp to sterilize the air by emitting ultraviolet rays.

[0460] In some embodiments of the present application, the refrigerator further includes a deodorizing module, and the refrigerator is also provided with a deodorizing module, which is used to remove odor molecules in the air. The deodorizing module can be set as a photocatalyst, activated carbon, etc.

[0461] In some embodiments, the odor detection device is used to detect the concentration of odor in the space, which serves as a basis for the operation of the deodorization module.

[0462] In some implementations of this embodiment, when the odor concentration detected by the odor detection device reaches the first set range condition, it is determined that the odor concentration in the box 100 is high and needs to be removed, and the odor removal module is turned on to avoid odor contamination caused by air flow during the fresh air oxygen reduction process.

[0463] In some embodiments, when the odor concentration detected by the odor detection device reaches the end-of-work condition, it is determined that the odor concentration in the box 100 is within a normal range at this time, and the odor purification module is turned off.

[0464] In some embodiments of this embodiment, the deodorizing module also includes a photocatalyst catalytic unit 363, which is arranged on the side of the built-in fan 34 close to the outlet 33. In this application, DBD (dielectric barrier) discharge is used to couple the photocatalyst to achieve low-temperature plasma discharge and coordinated photocatalyst / metal oxide catalyst catalytic function to achieve a fast and efficient deodorizing effect.

[0465] In the technical solution of the present application, the main function of the photocatalyst catalytic unit 363 is to remove odor. The photocatalyst is excited by a high voltage electric field to generate electrons and holes. The electrons migrate from the valence band to the conduction band and react with O2. The reaction formula is:

[0466]

[0467] The valence band holes react with H2O in the air, and the reaction equation is:

[0468] h + +H2O→.OH

[0469] Both .OH have strong oxidizing properties. The air in the housing 100 is sucked in through the built-in fan 34, and the odor molecules in the air are oxidized and decomposed in the photocatalytic unit 363, which plays a strong and rapid odor removal role.

[0470] Reference Fig.29 The photocatalyst unit 363 includes a substrate plate 3631, a photocatalyst layer 3634 wrapped on the outer surface of the substrate plate 3631, and a first electrode plate 3632 and a second electrode plate 3633 arranged opposite to each other and located on both sides of the substrate plate 3631. The first electrode plate 3632 and the second electrode plate 3633 are electrically connected to the high voltage power supply. The substrate plate 3631 is arranged on the side of the built-in fan 34 close to the outlet 33. A plurality of through holes are provided on the substrate plate 3631 along the direction of the airflow, which increases the airflow passing rate and the surface area of ​​the photocatalyst layer 3634, thereby improving the deodorization efficiency. The air in the box 100 flows out from the outlet 33 of the built-in fan 34 under the action of the built-in fan 34, and then flows through the photocatalyst layer 3634 and flows back to the box 100 through the outlet 33.

[0471] The photocatalyst unit 363 utilizes the high voltage electric field generated by the first electrode plate 3632 and the second electrode plate 3633 to excite the photocatalyst layer 3634 to generate strong oxidizing molecules to decompose the odor molecules in the housing 100 .

[0472] In some embodiments, the substrate plate 3631 is configured as a porous ceramic, and the photocatalyst is coated or impregnated on the surface of the porous ceramic to achieve the catalytic function of low-temperature plasma discharge synergistic with the photocatalyst / metal oxide catalyst. It should be noted that the photocatalyst here can be TiO2 doped with Cu or Mn oxide.

[0473] In some embodiments, reference Fig.30 The first electrode plate 3632 and the second electrode plate 3633 are configured as plate-wire mesh electrodes, which can effectively excite the photocatalyst and effectively reduce wind resistance. It should be noted that the two plate-wire electrodes can be interchanged.

[0474] In some embodiments, reference Fig.31 , the first electrode plate 3632 and the second electrode plate 3633 can also be set as plate-plate mesh opposing electrodes.

[0475] In some embodiments not shown in the figure, the first electrode plate 3632 and the second electrode plate 3633 may be configured as plate-line opposing electrodes, and plate electrodes or line electrodes may be provided at upper and lower positions of the substrate plate 3631 .

[0476] In some embodiments not shown in the figure, plate electrodes or line electrodes may be provided above and below the substrate plate 3631 on the basis of providing the first electrode plate 3632 and the second electrode plate 3633 as plate-plate opposing electrodes.

[0477] The discharge parameters in this embodiment are: the voltages of the two electrodes are two positive and negative high voltages of the same frequency and amplitude of the cosine pulse with opposite phases, the peak value range of the positive cosine high voltage is 1.5 to 2.8 kV, and the corresponding peak value range of the negative cosine high voltage is -1.5 to -2.8 kV. It should be noted that the spacing between the two electrodes corresponding to the above voltage is 20 mm.

[0478] In addition, the electrode voltage can also be a cosine pulse negative high voltage (cosine negative high voltage peak range: -2.5 to -4.5 kV) or a cosine pulse positive high voltage (cosine positive high voltage peak range: 2.5 to 4.5 kV), in which case the relative voltage of the counter electrode relative to the high voltage electrode is "0". It should be noted that the spacing between the two electrodes corresponding to the above voltage is 20 mm.

[0479] In some embodiments, in some implementations of some embodiments, reference Figure 8The distance between the first electrode plate 3632 and the substrate plate 3631 is 0.1 mm-5 mm. Similarly, the distance between the second electrode plate 3633 and the substrate plate 3631 is 0.1 mm-5 mm.

[0480] Based on the distance between the two electrodes, the DBD discharge voltage is relatively low, which means that the photocatalyst can be excited efficiently without generating ozone or the amount of ozone generated is low and below the user perception threshold. Therefore, the photocatalytic unit 363 using DBD discharge coupled photocatalyst can operate continuously, speed up the deodorization speed, and improve the deodorization efficiency. There is no need to set an operating control program to reduce the discharge time and frequency in order to control ozone at a lower concentration like an ordinary deodorization module, which leads to a decrease in the deodorization speed.

[0481] In some embodiments of the present 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, and use the vacuum pump assembly 8 to evacuate the cold storage chamber 1 to promote gas circulation inside and outside the cold storage chamber 1; turn on the high-voltage power supply, and the photocatalyst catalytic unit 363 releases strong oxidizing molecules.

[0482] Through the above steps, the deodorization module (exemplarily, the photocatalyst catalytic unit 363 in the present application) and the fresh air oxygen reduction module act simultaneously, the deodorization module is used to remove odor molecules in the air, and the fresh air oxygen reduction module is used to replace the gas, thereby improving the deodorization efficiency of the refrigerating chamber 1. At the same time, the deodorization module is used to purify the odor, which can effectively prevent the first gas-conditioning membrane assembly 101, the first pipeline assembly, the vacuum pump assembly 8 and the refrigerating chamber 1 from odor.

[0483] In some embodiments of the present 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, and use the vacuum pump assembly 8 to evacuate the fresh-keeping drawer 11 to promote gas circulation inside and outside the fresh-keeping drawer 11; turn on the high-voltage power supply, and the photocatalyst catalytic unit 363 releases strong oxidizing molecules.

[0484] Through the above steps, the deodorizing module (exemplarily, the photocatalyst catalytic unit 363 in the present application) and the fresh air deoxygenation module act simultaneously, the deodorizing module is used to remove odor molecules in the air, and the fresh air deoxygenation module is used to replace the gas, thereby improving the deodorizing efficiency of the fresh-keeping drawer 11. At the same time, the deodorizing module is used to deodorize, which can effectively prevent the first gas-conditioning membrane assembly 101, the first pipeline assembly, the vacuum pump assembly 8 and the refrigerator 1 from odor.

[0485] Reference Fig.23 , taking refrigerator room 1 as an example to illustrate the control logic of the refrigerator's odor removal.

[0486] Determine whether the refrigerator compartment is in a closed state (step S2303);

[0487] In step S2303, if the refrigerator compartment is in the closed state, step S2301 is executed;

[0488] In step S2303, if the refrigerating chamber is not in the closed state, step S2304 is executed, and the refrigerator alarms or the vacuum pump component extracts air in a preset working state.

[0489] Determine whether the odor concentration detected by the first odor detection device reaches a first preset odor concentration threshold (step S2301);

[0490] In step S2301, if the odor concentration reaches the first preset odor concentration threshold, step S2302 is executed to turn on the vacuum pump assembly 8 and the high voltage power supply;

[0491] In step S2301, if the odor concentration does not reach the first preset odor concentration threshold, step S2301 is executed.

[0492] It should be noted that the above-mentioned first preset odor concentration threshold is the limit for deodorization and can be adjusted according to user needs.

[0493] It should be noted that the fresh air oxygen reduction process, sterilization process and deodorization process in this application are set to be in a relatively closed space to improve the efficiency of fresh air ventilation, sterilization and deodorization. Of course, it is known that the short-term opening of the closed space does not require the switching of component actions to avoid too frequent switching of components and affect the service life of the components.

[0494] In some embodiments, the working state of one or a combination of the vacuum pump assembly 8 and the photocatalyst unit 363 can be controlled by the concentration of the odor.

[0495] In some implementations of this embodiment, the odor purification module and the sterilization module can be integrated in the same housing 31.

[0496] In some implementations of the present embodiment, during the fresh air deoxygenation process, if it is detected that the odor concentration in the compartment undergoing fresh air deoxygenation reaches the corresponding preset odor concentration threshold, at this time, 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 allow the purification module to generate a strong oxidizing ion group to adsorb odor molecules in the air.

[0497] In some implementations of this embodiment, before the fresh air and oxygen reduction are performed in the compartment, a deodorization action is performed, and the high voltage power supply is turned on to make the purification module produce a strong oxidizing ion group. Deodorization is performed before the fresh air and oxygen reduction action is performed to prevent the problem of odor contamination between compartments or components.

[0498] In some embodiments of the present application, the sterilization module and the odor removal module can be integrated together to form a sterilization and odor removal module, so that the sterilization and odor removal module produces ion groups and ozone. The functions of the sterilization module and the odor removal module can also be separated to achieve a refined division of functions.

[0499] It should be noted that when the sterilization and odor purification module is used, the working logic of the sterilization and odor purification module can refer to the separate sterilization module and odor purification module.

[0500] The odor purification module also includes a cold catalyst catalytic unit 364, which is arranged on the side of the internal air duct close to the outlet 33. Specifically, the cold catalyst catalytic unit 364 is arranged on the side of the photocatalytic unit 363 close to the outlet 33, and is used to further adsorb and decompose odor molecules in the air and degrade ozone generated by the high-voltage discharge of the strong oxidizing ion generating unit 362.

[0501] The cold catalyst catalytic unit 364 includes a cold catalyst substrate, a plurality of through holes are provided on the cold catalyst substrate, and the outer surface of the cold catalyst substrate is wrapped with a cold catalyst layer. The airflow in the housing 31 flows through the cold catalyst layer and then flows back to the inside of the box 100 through the outlet 33. Specifically, the airflow in the housing 31 that has been reacted with strong oxidizing ions, positive ions, and negative ions passes through the cold catalyst layer and is further cleaned, thereby ensuring the cleaning effect. Exemplarily, the cold catalyst substrate is configured as a porous ceramic, and the surface of the porous ceramic is coated with a cold catalyst.

[0502] In some implementations not shown in the figure of the present embodiment, the refrigerator further includes an ethylene removal unit for removing ethylene inside the housing 100. The purpose of this is that ethylene is an endogenous ripening-promoting physiologically active factor released by respiratory transition fruits and vegetables when they mature after being harvested. Reducing the ethylene content in the storage environment can effectively prolong the freshness of fruits and vegetables.

[0503] In some embodiments of the present application, a catalytic deodorization module is provided at the exhaust port of the vacuum pump assembly 8, which can decompose odor substances, for example, methyl mercaptan, volatile amines and other substances into carbon dioxide, water and the like.

[0504] It is known that the catalytic deodorization module can be set as a common catalyst or an electrically excited synergistic catalytic module.

[0505] Exemplarily, it can be set as a photocatalyst and an ion catalyst.

[0506] By providing a catalytic deodorization module at the exhaust port of the vacuum pump assembly 8, bacteria or odors that have not been removed inside the refrigerator can be prevented from spreading outside the cabinet 100, affecting the air quality outside the cabinet 100 and reducing the user experience.

[0507] In some embodiments of the present application, a sterilization and deodorization module is provided on one side of the controlled atmosphere membrane assembly, and a sterilization and deodorization operation is performed before or simultaneously with oxygen reduction by using the fresh air unit (vacuum pump assembly 8 and controlled atmosphere membrane assembly).

[0508] In some embodiments of the present application, a refrigerator is proposed, which includes a vacuum pump assembly 8, a pipeline assembly and an atmosphere-controlled membrane assembly with a refrigerating chamber 1 or a fresh-keeping drawer 11, which is used to achieve fresh air ventilation in the refrigerating chamber 1 while reducing the oxygen content of the air in the refrigerating chamber 1, and to achieve fresh air ventilation in the fresh-keeping drawer 11 while reducing the oxygen content of the air in the fresh-keeping drawer 11; at the same time, the refrigerator also includes a sterilization module. Before performing the fresh air oxygen reduction action, the sterilization module is first turned on to achieve pre-sterilization of the refrigerating chamber 1 or the fresh-keeping drawer 11, so as to prevent bacteria in the refrigerating chamber 1 or the fresh-keeping drawer 11 from contaminating the atmosphere-controlled membrane assembly, the pipeline assembly and the vacuum pump assembly 8 along with the air flow circulation.

[0509] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A refrigerator, characterized in that: include: A box body, the box body comprising a top and a bottom arranged along the length direction thereof, the box body comprising an outer shell and an inner liner, the inner liner being arranged inside the outer shell; An installation space is provided between the inner container and the outer shell; A heat-insulating layer, which is arranged in the installation space and is used to insulate the storage space inside the box from the outside; A compressor compartment, which is arranged at the bottom of the box body; A refrigerating chamber, which is configured to be formed by the inner tank and is used for refrigerating and storing food; A door body, used for opening or closing the refrigerating chamber; A first flow gap, which is configured as a gap at a connection between the door body and the box body when the door body closes the refrigerating chamber; a first atmosphere-controlled membrane assembly disposed on the top of the refrigerating chamber, wherein the first atmosphere-controlled membrane assembly has a higher permeability to oxygen than to nitrogen; a vacuum pump assembly, which is disposed in the compressor compartment and is used to evacuate air from the refrigerating chamber; A first pipeline assembly, one end of which is connected to the vacuum pump assembly, and the other end of which passes through the insulation layer and extends to a side of the first gas-controlled membrane assembly away from the refrigerating chamber, the first pipeline assembly being used to provide a flow pipeline for the gas extracted by the vacuum pump assembly; When the vacuum pump assembly is in operation, the air in the refrigerated chamber is drawn out through the first modified atmosphere membrane assembly; The controller is configured as: After the refrigerator is powered on, the vacuum pump assembly is turned on after receiving the first signal or the vacuum pump assembly is directly turned on, and the vacuum pump assembly evacuates the refrigerating chamber and discharges the evacuated gas to other chambers or the outside of the box, so that there is a pressure difference between the refrigerating chamber and the outside of the refrigerating chamber; The air outside the box enters the refrigerating chamber through the first circulation gap to form at least an airflow circulation path between the refrigerating chamber, the vacuum pump assembly, and the outside of the box, thereby replacing part of the gas generated by the food in the refrigerating chamber; The oxygen content of the gas extracted by the vacuum pump assembly is higher than the oxygen content of the remaining air in the refrigerating chamber at least for a period of time, so that the oxygen content in the refrigerating chamber is lower than the relative oxygen content of the gas outside the refrigerating chamber.

2. The refrigerator according to claim 1, characterized in that: Also includes: A fresh-keeping drawer, which is arranged in the refrigerating chamber or the inner tank; A second modified atmosphere membrane assembly is arranged on the top of the fresh-keeping drawer, wherein the second modified atmosphere membrane has a higher permeability to oxygen than to nitrogen; A second pipeline assembly, one end of which is connected to the vacuum pump assembly, and the other end of which extends through the insulation layer to a side of the second gas-controlled membrane assembly away from the interior of the fresh-keeping drawer, the second pipeline assembly being used to provide a flow pipeline for the gas extracted by the vacuum pump assembly; The controller is configured so that when the vacuum pump assembly is in operation, the air in the fresh-keeping drawer passes through the second atmosphere-modifying membrane assembly and enters the second pipeline assembly; The oxygen content of the gas extracted from the fresh-keeping drawer by the vacuum pump assembly is higher than the oxygen content of the remaining air in the fresh-keeping drawer at least for a period of time, so that the oxygen content in the fresh-keeping drawer is reduced.

3. The refrigerator according to claim 2, characterized in that: The first pipeline assembly and the second pipeline assembly are connected to each other, and the refrigerator further comprises: A regulating valve, which is arranged at the connection between the first pipeline assembly and the second pipeline assembly, and the regulating valve is used to control the communication between the refrigerating chamber and the vacuum pump assembly and / or the fresh-keeping drawer and the vacuum pump assembly; The controller is configured to selectively perform oxygen reduction action on the refrigerating chamber and / or the fresh-keeping drawer by adjusting the state of the regulating valve.

4. The refrigerator according to any one of claims 1 to 3, characterized in that: Also includes: A back air duct, which is arranged at the back of the box body, and the back air duct is connected with the refrigerating chamber and the fresh-keeping drawer; A refrigeration fan, which is arranged in the back duct and is used to accelerate the air flow in the back duct; The controller is configured to turn on the refrigeration fan to accelerate the air flow in the refrigeration chamber during the operation of the vacuum pump assembly.

5. The refrigerator according to claim 3, characterized in that: Also includes: An image acquisition device, which is arranged in the refrigerating chamber and / or the fresh-keeping drawer, and is used to acquire images in the refrigerating chamber and / or the fresh-keeping drawer and send them to the controller; an oxygen concentration detection device, which is arranged in the refrigerating chamber and / or the fresh-keeping drawer and is used to detect the oxygen concentration in the refrigerating chamber and / or the fresh-keeping drawer; The controller is configured to, when food is placed in the refrigerating chamber, receive an image captured by an image acquisition device in the refrigerating chamber, obtain the type of food and obtain a first required oxygen content range of the food accordingly, start the vacuum pump assembly, and adjust the regulating valve to connect the refrigerating chamber with the vacuum pump assembly; When the oxygen concentration in the refrigerating chamber reaches an upper limit value of the first required oxygen content range, turning off the vacuum pump assembly; and / or When food is put into the fresh-keeping drawer, an image captured by an image acquisition device in the fresh-keeping drawer is received, the type of food is acquired and a second required oxygen content range of the food is obtained accordingly, the vacuum pump assembly is turned on, and the regulating valve is adjusted to connect the fresh-keeping drawer with the vacuum pump assembly; When the oxygen concentration in the fresh-keeping drawer reaches an upper limit value of the second required oxygen content range, the vacuum pump assembly is turned off.

6. The refrigerator according to any one of claims 2, 3 and 5, characterized in that: Also includes: A gas collecting chamber connected to the air inlet end of the vacuum pump assembly and used to collect the oxygen-rich gas extracted by the vacuum pump assembly from the refrigerating chamber and / or the fresh-keeping drawer; A storage chamber is disposed in the box body, and the storage chamber includes an oxygen inlet connected to the gas outlet of the vacuum pump assembly to receive gas from the gas collection chamber; The vacuum pump assembly is configured to suck the gas in the refrigerator compartment or the fresh-keeping drawer into the gas collecting chamber through the pipeline assembly, so that more oxygen in the air around the modified atmosphere membrane assembly than nitrogen around the modified atmosphere membrane assembly passes through the modified atmosphere membrane assembly into the gas collecting chamber, so as to reduce the oxygen concentration in the refrigerator compartment or the fresh-keeping drawer; The gas in the gas collection chamber enters the storage compartment, so that a high oxygen concentration space is formed in the storage compartment.

7. The refrigerator according to claim 6, characterized in that: The gas outlet end of the vacuum pump assembly can also be communicated with the outside of the box; The controller is configured to discharge the extracted gas out of the box when the oxygen content in the storage room reaches the lower limit of a preset oxygen concentration range and the vacuum pump assembly has not stopped pumping gas.

8. The refrigerator according to claim 2 or 7, characterized in that: The vacuum pump assembly includes a plurality of vacuum pumps, and the vacuum pumps are simultaneously connected to the first pipeline assembly; The controller is configured to, when receiving the second signal from the refrigerating chamber, simultaneously start at least two of the vacuum pumps to speed up the extraction of air from the refrigerating chamber.

9. A refrigerator, characterized in that: include: A box body, the box body comprising a top and a bottom arranged along the length direction thereof, the box body comprising an outer shell and an inner liner, the inner liner being arranged inside the outer shell; An installation space is provided between the inner container and the outer shell; A heat-insulating layer, which is arranged in the installation space and is used to reduce heat exchange between the inside and outside of the box; A compressor compartment, which is arranged at the bottom of the box body; A refrigerating chamber, which is configured to be formed by the inner tank and is used for refrigerating and storing food; A door body, used for opening or closing the refrigerating chamber; A first flow gap, which is configured as a gap at a connection between the door body and the box body when the door body closes the refrigerating chamber; a first controlled atmosphere membrane assembly, which is disposed on the top of the refrigerated chamber, wherein the controlled atmosphere membrane assembly has a faster permeability to oxygen than to nitrogen; a vacuum pump assembly, which is disposed in the compressor compartment and is used to evacuate air from the refrigerating chamber; A pipeline assembly, one end of which is connected to the vacuum pump assembly, and the other end of which passes through the insulation layer and extends to a side of the gas-controlled membrane assembly away from the refrigerated chamber, and the pipeline assembly is used to provide a flow pipeline for the gas extracted by the vacuum pump assembly; When the vacuum pump assembly is working, the air in the refrigerated room is drawn out through the modified atmosphere membrane assembly; A humidity detection device, which is arranged in the refrigerating chamber and is used to detect the humidity in the refrigerating chamber; The controller is configured as: receiving a humidity value detected by the humidity detection device, and when the humidity value reaches a first preset humidity value, starting a vacuum pump assembly, The vacuum pump assembly evacuates the refrigerating chamber and discharges the evacuated gas to other compartments or the outside of the box to reduce the pressure in the refrigerating chamber; The air outside the box enters the cold storage room through the first circulation gap to form at least an air flow circulation path among the cold storage room, the vacuum pump assembly, and the outside of the box, so as to discharge the moisture in the cold storage room out of the cold storage room through the air flow circulation.

10. The refrigerator according to claim 9, characterized in that: The controller is configured to reduce the operating frequency of the vacuum pump assembly or shut down the vacuum pump assembly to slow down or stop the airflow circulation in the refrigerating chamber when the humidity value decreases to a second preset humidity value.

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