Refrigerator, refrigerator control method and storage medium

Abstract

The embodiment of the invention provides a refrigerator, a control method of the refrigerator and a storage medium, belongs to the technical field of household appliances, and aims at solving the technical problems that in the related technology, the cost of the refrigerator is high, and noise generated by the refrigerator is large. A control module of the refrigerator is configured as follows: a first interface of a control valve is controlled to be communicated with a second interface of a corresponding first fresh-keeping drawer, and an air extractor is controlled to suck air into an accommodating space of the first fresh-keeping drawer; controlling the air extractor to keep an open state; a first connector of the control valve is controlled to be disconnected from a second connector of the corresponding first fresh-keeping drawer; and a first connector of the control valve is controlled to communicate with a second connector of the corresponding second fresh-keeping drawer, and the air extractor is controlled to suck air into the containing space of the second fresh-keeping drawer. The cost of the refrigerator can be reduced, and the noise of the refrigerator is reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of household appliances, and in particular to a refrigerator, a control method of the refrigerator, and a storage medium. BACKGROUND

[0002] A refrigerator is a common household appliance that can keep food or other items at a constant low temperature. The refrigerator includes a cabinet and a fresh-keeping drawer arranged in the cabinet. The fresh-keeping drawer forms an accommodation space in a negative pressure state to save food by using the accommodation space in the negative pressure state. With the increasing demand of users, the number of fresh-keeping drawers and air extraction devices is also set to be multiple. However, this also makes the cost of the refrigerator high and the noise generated by the refrigerator large. SUMMARY

[0003] Embodiments of the present application provide a refrigerator, a control method of the refrigerator, and a storage medium, which can solve the technical problems of high cost and large noise of the refrigerator.

[0004] In a first aspect, embodiments of the present application provide a refrigerator, comprising:

[0005] a plurality of fresh-keeping drawers, the fresh-keeping drawer being provided with an accommodation space; when the fresh-keeping drawer is in a locked state, the accommodation space is in a closed state; when the fresh-keeping drawer is in a pressure relief state, the accommodation space is in an open state;

[0006] an air extraction device, in communication with the accommodation spaces of the plurality of fresh-keeping drawers, the air extraction device being used at least for extracting air from the accommodation spaces of the plurality of fresh-keeping drawers connected therewith;

[0007] a control module, configured to:

[0008] when the fresh-keeping drawer is in the locked state, acquiring a current air pressure of the accommodation space;

[0009] when the current air pressure of the accommodation space is higher than a preset pressure, controlling the air extraction device to suck air from the accommodation space;

[0010] after controlling the air extraction device to suck air from the accommodation space to reduce the current air pressure of the accommodation space to be less than or equal to the preset pressure, controlling the ion sterilization module to release sterilization ions into the accommodation space;

[0011] if the fresh-keeping drawer remains in the locked state, controlling the ion sterilization module to release sterilization ions into the accommodation space; during the process of releasing sterilization ions by the ion sterilization module, controlling the air extraction device not to suck air from the accommodation space.

[0012] By adopting the technical scheme, the refrigerator comprises at least two fresh-keeping drawers, and each fresh-keeping drawer is provided with an accommodation space; when the fresh-keeping drawer is in the locking state, the accommodation space is in a closed state; when the fresh-keeping drawer is in the pressure relief state, the accommodation space is in an open state; the air extraction device is communicated with the accommodation spaces of the at least two fresh-keeping drawers, and the air extraction device is used at least for extracting air from the communicated accommodation spaces. The control valve has one first interface and two second interfaces, the control valve is communicated with the air extraction device through the first interface, and the control valve is communicated with the two accommodation spaces through the two second interfaces.

[0013] When the fresh-keeping drawer is switched from the pressure relief state to the locking state, the first interface of the control valve is controlled to be communicated with the corresponding second interface, and the air extraction device is controlled to suck air from the accommodation space, so that the accommodation spaces of the two fresh-keeping drawers can form a negative pressure state; when the fresh-keeping drawer is in the locking state, the current air pressure of the two accommodation spaces is obtained, and when the current air pressure of the accommodation space is higher than the preset pressure, the first interface of the control valve is controlled to be communicated with the corresponding second interface, and the air extraction device is controlled to suck air from the accommodation space.

[0014] When the fresh-keeping drawer is in the locking state and the first interface of the control valve is communicated with the corresponding second interface, the first interface of the control valve is not communicated with the other second interface, so that one air extraction device can be matched with the control valve, so that the air extraction device can be used for the air extraction process of the two accommodation spaces, the cost of the refrigerator is reduced, the refrigerator does not need to suck air from the two fresh-keeping drawers at the same time through two air extraction devices, the possibility of resonance and the like of the refrigerator is reduced, and the noise generated by the refrigerator is reduced.

[0015] In some possible implementation manners, the control module is configured to:

[0016] control the air extraction device to remain in the open state, and the remaining time of the air extraction device in the open state is less than or equal to 10 minutes;

[0017] Alternatively, the control module is configured to:

[0018] control the air extraction device to remain in the open state for a time greater than or equal to 15 minutes and less than or equal to 30 minutes.

[0019] In some possible implementation manners, the control module is configured to:

[0020] after the air extraction device is switched from the open state to the closed state, the air extraction device is controlled to be switched from the closed state to the open state after an interval shutdown time;

[0021] the shutdown time is greater than or equal to 1 hour and less than or equal to 6 hours.

[0022] In some possible implementations, after the suction device has finished suctioning air from the containing space of the first food storage drawer, the control module is configured to:

[0023] The air extraction device is kept in the on state.

[0024] The first interface controlling the control valve is disconnected from the second interface corresponding to the first fresh-keeping drawer;

[0025] The first interface of the control valve is connected to the second interface of the corresponding second fresh food drawer, and the air extraction device is controlled to draw air into the containing space of the second fresh food drawer.

[0026] In some possible implementations, the control module is configured as follows:

[0027] Obtain the leakage rate of the two containment spaces;

[0028] Based on the leakage rate of the containment space, the connection time between the first interface and the second interface corresponding to the containment space is determined, and the connection time between the second interface and the containment space is determined.

[0029] In some possible implementations, the control module is configured to obtain the leakage rates of the two containment spaces as follows:

[0030] Obtain the initial air pressure of the containment space after the last time the air extraction device sucked air into the containment space;

[0031] Obtain the current air pressure of the containment space, and obtain the duration since the last time the air extraction device sucked air into the containment space;

[0032] The leakage rate of the containment space is determined based on the initial air pressure, the current air pressure, and the duration.

[0033] In some possible implementations, the control module is configured as follows:

[0034] The air extraction device is kept in the on state.

[0035] If the air leakage rate of the first fresh-keeping drawer is higher than that of the second fresh-keeping drawer, then the time for the air extraction device to extract air from the first fresh-keeping drawer is controlled to be longer than the time for the air extraction device to extract air from the second fresh-keeping drawer.

[0036] If the leakage rate of the second fresh-keeping drawer is higher than that of the first fresh-keeping drawer, then the time for the suction device to suction the first fresh-keeping drawer is controlled to be less than the time for the suction device to suction the second fresh-keeping drawer.

[0037] In some possible implementations, if the first and second food storage drawers transition from the depressurization state to the locked state, the control module is configured as follows:

[0038] The first interface of the control valve is connected to the second interface corresponding to the first fresh food drawer, and the air extraction device is controlled to draw air into the containing space of the first fresh food drawer.

[0039] The air extraction device is kept in the on state.

[0040] The first interface controlling the control valve is disconnected from the second interface corresponding to the first fresh-keeping drawer;

[0041] The first interface of the control valve is connected to the second interface of the corresponding second fresh food drawer, and the air extraction device is controlled to draw air into the containing space of the second fresh food drawer.

[0042] Secondly, embodiments of this application provide a method for controlling a refrigerator, the refrigerator comprising:

[0043] Multiple food storage drawers are provided with a storage space; when the food storage drawer is locked, the storage space is in a closed state; when the food storage drawer is in a depressurized state, the storage space is in an open state.

[0044] An air extraction device is connected to the receiving space of the plurality of food storage drawers, and the air extraction device is used at least to extract air from the receiving space of the plurality of food storage drawers connected to it.

[0045] Control module;

[0046] The control method includes:

[0047] When the food storage drawer is in the locked state, the current air pressure of the storage space is obtained;

[0048] When the current air pressure in the containment space is higher than the preset pressure, the air extraction device is controlled to draw air into the containment space.

[0049] After controlling the air extraction device to draw air into the containment space to reduce the current air pressure of the containment space to less than or equal to a preset pressure, the ion sterilization module is controlled to release sterilizing ions into the containment space.

[0050] If the food preservation drawer remains locked, the ion sterilization module is controlled to release sterilizing ions into the containing space; during the process of the ion sterilization module releasing sterilizing ions, the air extraction device is controlled not to draw air into the containing space.

[0051] Thirdly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a computer, are used to implement the method described in the second aspect.

[0052] The computer-readable storage medium provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here.

[0053] Fourthly, this application provides a computer program product, including a computer program that, when executed by a computer, is used to implement the method described in the second aspect.

[0054] The computer program product provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here. Attached Figure Description

[0055] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0056] Figure 1 This is a schematic diagram of the structure of multiple food storage drawers according to an embodiment of this application;

[0057] Figure 2 This is a schematic diagram of the structure of the food storage drawer according to an embodiment of this application;

[0058] Figure 3 This is a schematic diagram of the control relationship of the control module in an embodiment of this application;

[0059] Figure 4 This is a schematic diagram illustrating the control process of the air extraction device for multiple food storage drawers according to an embodiment of this application;

[0060] Figure 5 This is a schematic diagram of the air extraction mode control process of the air extraction device according to an embodiment of this application;

[0061] Figure 6 This is a schematic diagram illustrating the control process of the air extraction device in this application on multiple food storage drawers via a control valve.

[0062] Figure 7 This is a schematic diagram illustrating how the air extraction device controls multiple food storage drawers via a control valve, according to an embodiment of this application.

[0063] Figure 8 This is a schematic diagram illustrating the determination of connection time based on leakage rate according to an embodiment of this application;

[0064] Figure 9 This is a schematic diagram illustrating the determination of the leakage rate according to an embodiment of this application;

[0065] Figure 10 This is a schematic diagram of the overall control process of the ion sterilization module in an embodiment of this application;

[0066] Figure 11 This is a control schematic diagram of the ion sterilization module according to an embodiment of this application;

[0067] Figure 12 This is a control diagram of the ion sterilization module and the deodorization module according to an embodiment of this application;

[0068] Figure 13 This is a control schematic diagram of the ion sterilization module according to an embodiment of this application;

[0069] Figure 14 This is a schematic diagram of the control of the odor-eliminating module in an embodiment of this application.

[0070] Explanation of reference numerals in the attached figures:

[0071] 100. Box body;

[0072] 110. Installation cavity;

[0073] 200. Food storage drawer;

[0074] 200a, First food storage drawer; 200b, Second food storage drawer;

[0075] 210. Main body; 220. Drawer door; 230. Storage space;

[0076] 300. Control module;

[0077] 400. Ion sterilization module;

[0078] 500, Odor-eliminating module;

[0079] 600. Control valve;

[0080] 700. Pressure sensor;

[0081] 800. Odor sensor;

[0082] 900. Air extraction device. Detailed Implementation

[0083] As described in the background section, a refrigerator includes a cabinet and crisper drawers disposed within the cabinet. These drawers create a negative pressure storage space to preserve food. With increasing user demand, the number of crisper drawers and vacuum systems has increased. However, each crisper drawer requires a separate vacuum pump or other suction device, which increases the cost of the refrigerator. Furthermore, using two suction systems simultaneously to create negative pressure in two crisper drawers on a single refrigerator can easily cause resonance and other problems, resulting in increased noise levels.

[0084] In view of this, embodiments of this application provide a refrigerator, a refrigerator control method, and a storage medium. The refrigerator includes at least two crisper drawers, each with a receiving space. When the crisper drawers are locked, the receiving spaces are sealed. When the crisper drawers are depressurized, the receiving spaces are open. An air extraction device is connected to the receiving spaces of at least two crisper drawers, and the air extraction device is used to extract air from at least the connected receiving spaces. A control valve has one first interface and two second interfaces. The control valve is connected to the air extraction device through the first interface and to the two receiving spaces through the two second interfaces.

[0085] When the food storage drawer transitions from the depressurization state to the locked state, the first interface of the control valve connects to the corresponding second interface, controlling the air extraction device to draw air into the storage space, thereby creating a negative pressure state in the storage space of the two food storage drawers. When the food storage drawer is in the locked state, the current air pressure of the two storage spaces is obtained. When the current air pressure of the storage space is higher than the preset pressure, the first interface of the control valve connects to the corresponding second interface, controlling the air extraction device to draw air into the storage space.

[0086] When the crisper drawer is locked, the first port of the control valve is connected to the corresponding second port, while the first port of the control valve is not connected to the other second port. This allows a single air extraction device to work in conjunction with the control valve, enabling the air extraction device to be used for the air extraction process of both compartments. This reduces the cost of the refrigerator and eliminates the need for two air extraction devices to simultaneously extract air from both crisper drawers, reducing the possibility of resonance and noise in the refrigerator.

[0087] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0088] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0089] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0090] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0091] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0092] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0093] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0094] Reference Figures 1-4This application provides a refrigerator, including a cabinet 100. The cabinet 100 includes a top and a bottom arranged along the length direction. The interior of the cabinet 100 can form a storage compartment, which can include a refrigerator compartment and a freezer compartment, so as to use the refrigerator compartment and the freezer compartment to store food in cold or cold storage.

[0095] The refrigerator of this application may include a door. The door may include an inner liner and an outer shell. The door can be used to open and close the storage space. The door can be used to form a relatively enclosed space in the refrigerator 100, thereby enabling the storage compartment of the refrigerator 100 to maintain a relatively constant temperature and reduce the rate of temperature rise in the storage compartment.

[0096] In some possible implementations, the housing 100 defines a mounting cavity 110 having an opening on one side. The mounting cavity 110 may be located in a storage compartment, for example, in a refrigerator compartment, or it may be located in a freezer compartment.

[0097] For example, a refrigerator may include a crisper drawer 200. The crisper drawer 200 is movably disposed within a mounting cavity 110. When the crisper drawer 200 is locked, it is located within the mounting cavity 110 and can form a negative pressure accommodating space 230, thereby accommodating food items that need to be preserved. When the crisper drawer 200 is depressurized, it is movable relative to the refrigerator body 100, allowing it to move into or out of the mounting cavity 110 for easy access to food items.

[0098] In some possible implementations, the food storage drawer 200 may include a main body 210, which may be a rectangular box structure with an opening on the top surface. A receiving space 230 is formed inside the main body 210, which may be a cavity structure with an opening on the top surface. Food can be placed into the receiving space 230 through the top opening of the receiving space 230, or food can be taken out of the receiving space 230 through the top opening of the receiving space 230.

[0099] For example, the food storage drawer 200 may include a drawer door. The drawer door may be located at the front end of the main body 210, and the drawer door may be used to push and pull the main body 210, thereby allowing the entire food storage drawer 200 to be pulled out within the mounting cavity 110. When the entire food storage drawer 200 is fully pushed into the mounting cavity 110, the drawer door can close the front opening of the receiving space 230, thereby forming a closed receiving space 230.

[0100] In some possible implementations, the refrigerator may include a refrigeration system capable of supplying cool air to the storage compartment. The refrigeration system includes a compressor, condenser, expansion valve, and evaporator. A refrigerant circulates among the components of the refrigeration system to achieve the cooling effect.

[0101] For example, the main flow process of refrigerant in various components is as follows: after passing through the compressor, the refrigerant enters the condenser, after passing through the condenser, it enters the expansion valve, after passing through the expansion valve, it enters the evaporator, and after passing through the evaporator, it flows back to the compressor.

[0102] The compressor compresses the refrigerant gas at high temperature and pressure and then discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve causes the high-temperature, high-pressure liquid refrigerant in the condenser to expand into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant that has expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves a cooling effect by utilizing the latent heat of refrigerant evaporation or heat exchange with the material being cooled.

[0103] In some possible implementations, the food storage drawer 200 may include an air extraction device 900, the air extraction port of which may be connected to the receiving space 230. When the food storage drawer 200 is in the locked state, the food storage drawer 200 is located in the mounting cavity 110, and the air extraction device 900 can extract the air from the receiving space 230, so that the receiving space 230 forms a negative pressure state.

[0104] The air extraction device 900 can be configured as a vacuum pump or similar structure to reduce the air content in the containment space 230. Compared to reducing the oxygen content in the containment space 230, reducing the air content in the containment space 230 can reduce the air pressure in the containment space 230, thereby placing the food under negative pressure and further improving the preservation effect of the food.

[0105] In some possible implementations, the food storage drawer 200 may include a control valve 600. The control valve 600 may have a first interface and two second interfaces. The control valve 600 is connected to the air extraction device 900 through the first interface and to two receiving spaces 230 through the two second interfaces.

[0106] At least two food storage drawers 200 include a first food storage drawer 200a and a second food storage drawer 200b. The number of food storage drawers 200 can be set to two, or the number of food storage drawers 200 can be set to multiple, and the embodiments of this application do not further limit this.

[0107] The food storage drawer 200 may include an ion sterilization module 400. The ion sterilization module 400 can at least release sterilizing ions into the storage space 230 to sterilize the storage space 230 and reduce the possibility of food spoilage in the storage space 230.

[0108] In some possible implementations, the food storage drawer 200 may include a deodorizing module. The deodorizing module is capable of releasing deodorizing ions into the containing space 230, thereby achieving a deodorizing process in the containing space 230 through the deodorizing ions released by the deodorizing module, reducing the possibility of cross-contamination of odors among various food items in the containing space 230.

[0109] The following describes the cooperation relationship between the exhaust device 900 and the fresh food drawers 200, taking as an example that there are two fresh food drawers 200, and the two fresh food drawers 200 are respectively designated as the first fresh food drawer 200a and the second fresh food drawer 200b.

[0110] For example, when the food storage drawer 200 transitions from the depressurization state to the locked state, the first interface of the control valve 600 is connected to the corresponding second interface, which can control the air extraction device 900 to draw air into the accommodating space 230 through the control valve 600, thereby enabling the accommodating space 230 of the two food storage drawers 200 to form a negative pressure state.

[0111] When the crisper drawer 200 is locked, the first interface of the control valve 600 is connected to the corresponding second interface, while the first interface of the control valve 600 is not connected to the other second interface. This allows the control valve 600 to cooperate with a suction device 900, enabling the suction device 900 to be used for the suction process of both accommodating spaces 230. This reduces the cost of the refrigerator and eliminates the need for two suction devices 900 to simultaneously suction the two crisper drawers 200, reducing the possibility of resonance and noise generated by the refrigerator.

[0112] The food storage drawer 200 may include a control module 300, which can be connected to an air extraction device 900 and a control valve 600. This allows the control module 300 to control the activation and deactivation of the air extraction device 900 and the control valve 600. The control module 300 is configured as follows:

[0113] When the food storage drawer 200 transitions from the depressurization state to the locked state, the first interface of the control valve 600 is connected to the corresponding second interface, and the air extraction device 900 is controlled to draw air from the accommodating space 230.

[0114] In some possible implementations, the food storage drawer 200 is movably disposed within the mounting cavity 110. When the food storage drawer 200 is in the locked state, it is located within the mounting cavity 110 and can form a negative pressure accommodating space 230, thereby accommodating food items that need to be preserved. When the food storage drawer 200 is in the depressurized state, it is movable relative to the housing 100, allowing it to move into or out of the mounting cavity 110 for the retrieval of food items.

[0115] The accommodating space 230 has an opening connecting to the outside of the food storage drawer 200. When the food storage drawer 200 is in the locked state, the opening is closed, so that the accommodating space 230 is in a negative pressure state. When the pressure in the accommodating space 230 of the food storage drawer 200 is released, the opening opens, allowing air from the outside of the food storage drawer 200 to enter the accommodating space 230, and the food storage drawer 200 changes from the locked state to the depressurized state, thereby realizing the depressurization process of the food storage drawer 200.

[0116] It is easy to understand that when the food storage drawer 200 is locked, the storage space 230 is closed, and the air flow speed between the storage space 230 and the outside of the food storage drawer 200 is slow, so the food storage drawer 200 can play a better role in preserving the food.

[0117] When the food storage drawer 200 is in a depressurized state, the food storage drawer 200 is movable relative to the box body 100, and the storage space 230 is connected to the outside of the food storage drawer 200, thereby enabling the retrieval of food from the storage space 230.

[0118] For example, when the food storage drawer 200 switches from the depressurization state to the locked state, the first interface of the control valve 600 can be connected to the corresponding second interface, so that the suction device 900 can be connected to the receiving space 230 through the first interface and the second interface, and the suction device 900 can be controlled to suck air into the receiving space 230, thereby enabling the receiving space 230 of the two food storage drawers 200 to form a negative pressure state.

[0119] When the food storage drawer 200 is locked, the first interface of the control valve 600 is connected to the corresponding second interface, while the first interface of the control valve 600 is not connected to the other second interface. This ensures that the suction device 900 does not simultaneously suck air from the two food storage drawers 200's accommodating space 230, thus ensuring the suction effect of the suction device 900 on the accommodating space 230.

[0120] When the crisper drawer 200 is locked, the first interface of the control valve 600 is connected to the corresponding second interface, while the first interface of the control valve 600 is not connected to the other second interface. This allows the control valve 600 to cooperate with a suction device 900, enabling the suction device 900 to be used for the suction process of both accommodating spaces 230. This reduces the cost of the refrigerator and eliminates the need for two suction devices 900 to simultaneously suction the two crisper drawers 200, reducing the possibility of resonance and noise generated by the refrigerator.

[0121] It is easy to understand that, compared with the implementation of related technologies where each fresh-keeping drawer 200 needs to be equipped with a separate air extraction device 900, the embodiments of this application can use an air extraction device 900 in conjunction with a control valve 600 so that the air extraction device 900 can be used for the air extraction process of two accommodating spaces 230.

[0122] Furthermore, by setting the control valve 600, the air extraction device 900 can prevent the two fresh food drawers 200 from being extracted simultaneously, thereby reducing the noise generated by the air extraction device 900, ensuring that the air extraction device 900 can stably achieve the air extraction process of the two fresh food drawers 200, and reducing the working power required by the air extraction device 900.

[0123] Reference Figures 5-14 The control module can be configured to: obtain the current air pressure of the two storage spaces 230 when the food storage drawer 200 is in the locked state;

[0124] In some possible implementations, the refrigerator may also include a pressure sensor 700 disposed within the accommodating space 230, the output of which may be connected to the control module 300.

[0125] For example, each storage space 230 of the food storage drawer 200 can be equipped with a pressure sensor 700 to obtain the current air pressure of the storage space 230 of the food storage drawer 200 through at least two pressure sensors 700, so that the current air pressure of the storage space 230 can be obtained more accurately.

[0126] The pressure sensor 700 can be used to obtain the current air pressure of the containment space 230, so that the control module 300 can control the start and stop of the air extraction device 900 and the ion sterilization module 400 according to the current air pressure of the containment space 230.

[0127] When the current air pressure in the containment space 230 is higher than the preset pressure, the first interface of the control valve 600 is connected to the corresponding second interface, and the air extraction device 900 is controlled to draw air from the containment space 230.

[0128] In some possible implementations, the control module 300 may be configured to: when the food storage drawer 200 is in a locked state, determine whether the current air pressure of the accommodating space 230 is higher than a pressure threshold, the pressure threshold being determined based on a preset pressure.

[0129] If the current air pressure of the containment space 230 is higher than the pressure threshold, the air extraction device 900 is controlled to extract air from the containment space 230 so that the current air pressure of the containment space 230 is lower than or equal to the preset pressure.

[0130] Specifically, when the food storage drawer 200 is locked, it is determined whether the current air pressure of the storage space 230 is higher than the pressure threshold. The pressure threshold is determined according to the preset pressure, wherein the pressure threshold is higher than the preset pressure.

[0131] If the current air pressure in the storage space 230 is higher than the pressure threshold, the air extraction device 900 is controlled to extract air from the storage space 230 so that the current air pressure in the storage space 230 is lower than or equal to the preset pressure, so that the current air pressure in the storage space 230 is always below the pressure threshold, thereby ensuring the preservation effect of the storage space 230 on the food and reducing the possibility of food spoilage.

[0132] The pressure threshold can be determined based on a preset pressure. Furthermore, when the air pressure in the containment space 230 reaches the pressure threshold, the pumping device 900 can be controlled to pump air from the containment space 230, thereby reducing the air pressure in the containment space 230 to below or equal to the preset pressure. The pressure threshold is higher than the preset pressure. For example, the pressure threshold can be greater than or equal to 1.2 times the preset pressure.

[0133] For example, the preset pressure can be set between 0.6 atm and 0.8 atm. Then the pressure threshold can be set between 0.72 atm and 0.96 atm to ensure that the air pressure in the containment space 230 is always lower than atmospheric pressure.

[0134] It is easy to understand that when the freshness drawer 200 is locked, the current air pressure in the storage space 230 will increase over time. Therefore, the air extraction device 900 needs to extract air from the storage space 230 multiple times. The pressure threshold is greater than or equal to 1.2 times the preset pressure. This reduces the number of times the air extraction device 900 extracts air from the storage space 230 while ensuring the freshness preservation effect of the freshness drawer 200, making the control process of the freshness drawer 200 more convenient.

[0135] It should be noted that the control of the suction device 900 to draw air into the containing space 230 can be achieved in two situations. One of these situations is set as follows: when the fresh food drawer 200 starts to change from the depressurized state to the locked state, the fresh food drawer 200 is at normal pressure. In this case, the suction device 900 can be controlled to draw air into the containing space 230, so that the current air pressure of the containing space 230 can be reduced to a level lower than or equal to a preset pressure. For example, the current air pressure of the containing space 230 can be lower than the preset pressure, thereby enabling the containing space 230 to form a negative pressure state.

[0136] Another scenario is set up as follows: when the food storage drawer 200 is locked, the current air pressure of the storage space 230 will increase over time and the storage space 230 will be in a negative pressure state. However, the current air pressure of the storage space 230 is higher than the pressure threshold. Therefore, the storage space 230 needs to be evacuated multiple times by the air extraction device 900 so that the current air pressure of the storage space 230 can be reduced back to below or equal to the preset pressure.

[0137] In some possible implementations, when the first fresh-keeping drawer 200a transitions from the depressurization state to the locked state, the first interface of the control valve 600 is connected to the corresponding second interface, and the air extraction device 900 is controlled to draw air into the accommodating space 230 of the first fresh-keeping drawer 200a.

[0138] When the food storage drawer 200 transitions from the depressurization state to the locked state, the first interface of the control valve 600 can be connected to the second interface of the corresponding first food storage drawer 200a, so that the suction device 900 can be connected to the accommodating space 230 of the first food storage drawer 200a through the first and second interfaces, and the suction device 900 can be controlled to suck air from the accommodating space 230 of the first food storage drawer 200a, thereby enabling the accommodating space 230 of the first food storage drawer 200a to form a negative pressure state.

[0139] Then, the first interface of the control valve 600 is disconnected from the second interface of the corresponding first fresh-keeping drawer 200a, and the first interface of the control valve 600 is connected to the second interface of the corresponding second fresh-keeping drawer 200b, so that the suction device 900 can connect to the accommodating space 230 of the second fresh-keeping drawer 200b through the first and second interfaces. The suction device 900 is controlled to suck air into the accommodating space 230 of the second fresh-keeping drawer 200b, thereby enabling the accommodating space 230 of the second fresh-keeping drawer 200b to form a negative pressure state, so that the accommodating spaces 230 of the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b can respectively form a negative pressure state.

[0140] In some possible implementations, if the second food storage drawer 200b remains locked, the duration for which the second food storage drawer 200b remains locked is obtained.

[0141] If the holding time is greater than or equal to the set time, after the suction device 900 has finished sucking air from the containing space 230 of the first fresh-keeping drawer 200a, the first interface of the control valve 600 is connected to the second interface of the corresponding second fresh-keeping drawer 200b, and the suction device 900 is controlled to suck air from the containing space 230 of the second fresh-keeping drawer 200b.

[0142] For example, the set time can be set to 6 hours. If the holding time is greater than or equal to 6 hours, after the suction device 900 has finished suctioning air from the first fresh-keeping drawer 200a's holding space 230, the suction device 900 is controlled to suction air from the second fresh-keeping drawer 200b's holding space 230. This ensures that the current air pressure of the first fresh-keeping drawer 200a's holding space 230 is close to the current air pressure of the second fresh-keeping drawer 200b's holding space 230, so that both the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b can have a good preservation effect.

[0143] It is easy to understand that the set time can be determined based on the leakage rate of the containment space 230. The leakage rate can be used to represent the rate at which the current air pressure in the containment space 230 rises, and the leakage rate of the containment space 230 is related to the sealing performance of the containment space 230.

[0144] When the leakage rate of the containment space 230 is large, the current air pressure of the containment space 230 rises rapidly and reaches the preset pressure and pressure threshold more quickly. Therefore, the suction device 900 needs to be activated more quickly to evacuate the containment space 230, thereby reducing the current air pressure of the containment space 230. In other words, the interval between two consecutive evacuations of the containment space 230 by the suction device 900 is short.

[0145] In some possible implementations, the leakage rate of the two containment spaces 230 is obtained, and the control module 300 can be configured to obtain the initial air pressure of the containment space 230 after the previous suction device 900 sucked air from the containment space 230. The initial air pressure of the containment space 230 can be lower than a preset pressure to extend the interval between two suction operations of the containment space 230 by the suction device 900.

[0146] Alternatively, the initial air pressure of the containment space 230 can be equal to the preset pressure. When the air is drawn into the containment space 230 by the air extraction device 900 and the air extraction device 900 is turned off, the air pressure of the containment space 230 is the initial air pressure, and the initial air pressure is equal to the preset pressure, so that the control module 300 can more easily obtain the initial pressure of the two containment spaces 230.

[0147] The initial air pressure can be preset in the control module 300. That is, when the control module 300 draws air from the containing space 230 through the air extraction device 900, the control module 300 obtains the current air pressure of the containing space 230. When the current air pressure of the containing space 230 is the preset initial air pressure, the control module 300 controls the air extraction device 900 to close.

[0148] Alternatively, the initial air pressure can be obtained by the control module 300 through calculation or by collecting data from a pressure sensor. When the suction device 900 completes the suction of the containing space 230 and then closes the suction device 900, the control module 300 can obtain the current air pressure of the containing space 230 through the pressure sensor. The current air pressure of the containing space 230 is the initial air pressure.

[0149] For example, after obtaining the initial air pressure of the receiving space 230 after the last time the air extraction device 900 sucked air into the receiving space 230, the method further includes obtaining the current air pressure of the receiving space 230, and obtaining the duration after the last time the air extraction device 900 sucked air into the receiving space 230.

[0150] It is easy to understand that the control module 300 can obtain the current air pressure of the containment space 230 through the pressure sensor 700. The pressure sensor 700 can be used to obtain the current air pressure of the containment space 230, so that the control module 300 can control the start and stop of the air extraction device 900 and the ion sterilization module 400 according to the current air pressure of the containment space 230.

[0151] Furthermore, the control module 300 can determine the duration of air intake after the last time the suction device 900 sucked air into the containing space 230 by means of timing or other methods. For example, the control module 300 can obtain the current time and the time of the last time the suction device 900 sucked air into the containing space 230, and obtain the duration by calculating the current time and the time of the last time the suction device 900 sucked air into the containing space 230, that is, during the duration, the suction device 900 did not suck air into the containing space 230.

[0152] After acquiring the current air pressure of the containment space 230 and the duration of the last time the air extraction device 900 sucked air into the containment space 230, the control module 300 can also be configured to determine the leakage rate of the containment space 230 based on the initial air pressure, the current air pressure, and the duration.

[0153] As is easy to understand, after the air extraction device 900 draws air into the containing space 230, the current air pressure of the containing space 230 will increase over time, so that the current air pressure of the containing space 230 will gradually increase from the initial air pressure. After a certain period of time, the difference between the current air pressure and the initial air pressure of the containing space 230 is the air pressure change value of the containing space 230.

[0154] The leakage rate of the containment space 230 can be configured as the ratio of the pressure change value of the containment space 230 to the duration. The leakage rate of the containment space 230 can be used to represent the pressure increase value of the containment space 230 per unit time.

[0155] When the initial air pressure is constant, after a certain period of time, the higher the current air pressure in the containment space 230 and the greater the change in air pressure in the containment space 230, the faster the leakage rate of the containment space 230. Conversely, when the initial air pressure is constant, after a certain period of time, the lower the current air pressure in the containment space 230 and the smaller the change in air pressure in the containment space 230, the slower the leakage rate of the containment space 230.

[0156] In some possible implementations, after the vacuum device 900 has finished drawing air from the accommodating space 230 of the first preservation drawer 200a, the control module 300 is configured to keep the vacuum device 900 in the open state.

[0157] It should be noted that after the vacuum device 900 has been working for a period of time, it needs to be shut down for a period of time to reduce the number of times the vacuum device 900 is used, reduce the repeated opening and closing of the vacuum device 900, thereby reducing the possibility of damage to the vacuum device 900 and extending the service life of the vacuum device 900.

[0158] When the suction device 900 is controlled to suck air from the receiving space 230 of the first fresh-keeping drawer 200a and the receiving space 230 of the second fresh-keeping drawer 200b, for example, when the suction device 900 is controlled to suck air from the receiving space 230 of the first fresh-keeping drawer 200a and then suck air from the receiving space 230 of the second fresh-keeping drawer 200b, the specific method is as follows:

[0159] The air extraction device 900 can be kept open at all times. Then, the first interface of the control valve 600 can be disconnected from the second interface of the corresponding first fresh food drawer 200a, so that the air extraction device 900 will not suck air into the accommodating space 230 of the first fresh food drawer 200a. Subsequently, the first interface of the control valve 600 can be connected to the second interface of the corresponding second fresh food drawer 200b, so that the air extraction device 900 sucks air into the accommodating space 230 of the second fresh food drawer 200b.

[0160] It is easy to understand that in the comparison method, the suction device 900 is controlled to suck air into the storage space 230 of the first fresh-keeping drawer 200a, and then the suction device 900 is controlled to be in a closed state. Then the suction device 900 is controlled to suck air into the storage space 230 of the second fresh-keeping drawer 200b, that is, the suction device 900 is opened and closed twice.

[0161] Compared to the above comparison method, the control method in this application embodiment can reduce the number of times the vacuum device 900 is turned on and off, reduce the repeated opening and closing of the vacuum device 900, and thus reduce the possibility of damage to the vacuum device 900.

[0162] In some possible implementations, after the suction device 900 has sucked air from the containing space 230 of the first fresh-keeping drawer 200a, the current air pressure of the containing space 230 of the second fresh-keeping drawer 200b can be detected. If the current air pressure of the containing space 230 of the second fresh-keeping drawer 200b is higher than or equal to a pressure threshold, the suction device 900 can be controlled to remain open, allowing it to suck air from the containing space 230 of the second fresh-keeping drawer 200b, so that the current air pressure of the containing space 230 of the second fresh-keeping drawer 200b is lower than or equal to a preset pressure, thereby ensuring the fresh-keeping effect of the second fresh-keeping drawer 200b.

[0163] If the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b is higher than or equal to the preset pressure, but lower than or equal to the pressure threshold, the suction device 900 can be kept open at all times, allowing it to draw air from the storage space 230 of the second fresh-keeping drawer 200b, so that the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b is lower than or equal to the preset pressure, thereby ensuring the fresh-keeping effect of the second fresh-keeping drawer 200b.

[0164] If the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b is lower than the preset pressure, the leakage rate of the second fresh-keeping drawer 200b is low. After the suction device 900 completes the suction of the storage space 230 of the first fresh-keeping drawer 200a, the suction device 900 can be turned off, and the current air pressure in the storage space 230 of the first fresh-keeping drawer 200a and the storage space 230 of the second fresh-keeping drawer 200b will both be lower than the preset pressure.

[0165] In some possible implementations, the suction device can be configured as a high-power suction device. The suction device 900 is kept in the open state for a period of time greater than or equal to 15 minutes and less than or equal to 30 minutes.

[0166] For example, when controlling the suction device 900 to suction air from the receiving space 230 of the first fresh-keeping drawer 200a and the receiving space 230 of the second fresh-keeping drawer 200b, for instance, when controlling the suction device 900 to suction air from the receiving space 230 of the first fresh-keeping drawer 200a and then suction air from the receiving space 230 of the second fresh-keeping drawer 200b, the specific method is as follows:

[0167] When the suction device 900 is controlling the suction device 900 to suction air from the containing space 230 of the first fresh-keeping drawer 200a and the containing space 230 of the second fresh-keeping drawer 200b, the operating time of the suction device 900 can be set to be greater than or equal to 10 minutes and less than or equal to 20 minutes. For example, the operating time of the suction device 900 can be set to any of the following ranges: 10 minutes to 12 minutes, 12 minutes to 14 minutes, 14 minutes to 16 minutes, 16 minutes to 18 minutes, and 18 minutes to 20 minutes, to ensure the suction effect of the suction device 900 on the first fresh-keeping drawer 200a.

[0168] The air extraction device 900 is kept open at all times. Then, the first interface of the control valve 600 can be disconnected from the second interface of the corresponding first fresh food drawer 200a, so that the air extraction device 900 will not suck air into the accommodating space 230 of the first fresh food drawer 200a. Subsequently, the first interface of the control valve 600 can be connected to the second interface of the corresponding second fresh food drawer 200b, so that the air extraction device 900 sucks air into the accommodating space 230 of the second fresh food drawer 200b.

[0169] When the suction device 900 is controlling the suction device 900 to suction air from the storage space 230 of the second fresh-keeping drawer 200b, the operating time of the suction device 900 can be set to be greater than or equal to 5 minutes and less than or equal to 10 minutes. For example, the operating time of the suction device 900 can be set to any of the following ranges: 5 minutes to 6 minutes, 6 minutes to 7 minutes, 7 minutes to 8 minutes, 8 minutes to 9 minutes, and 9 minutes to 10 minutes, to ensure the suction effect of the suction device 900 on the first fresh-keeping drawer 200a.

[0170] In some possible implementations, the suction device can be configured as a high-power suction device. The suction device 900 is kept in the open state for a period of less than or equal to 10 minutes to shorten the suction efficiency of the suction device 900.

[0171] For example, when controlling the suction device 900 to suction air from the receiving space 230 of the first fresh-keeping drawer 200a and the receiving space 230 of the second fresh-keeping drawer 200b, for instance, when controlling the suction device 900 to suction air from the receiving space 230 of the first fresh-keeping drawer 200a and then suction air from the receiving space 230 of the second fresh-keeping drawer 200b, the specific method is as follows:

[0172] When the suction device 900 is used to suction air from the storage space 230 of the first fresh-keeping drawer 200a and the storage space 230 of the second fresh-keeping drawer 200b, the operating time of the suction device 900 can be set to be greater than or equal to 5 minutes and less than or equal to 8 minutes. For example, the operating time of the suction device 900 can be set to any of the following ranges: 5 minutes to 6 minutes, 6 minutes to 7 minutes, and 7 minutes to 8 minutes, to ensure the suction effect of the suction device 900 on the first fresh-keeping drawer 200a.

[0173] The air extraction device 900 is kept open at all times. Then, the first interface of the control valve 600 can be disconnected from the second interface of the corresponding first fresh food drawer 200a, so that the air extraction device 900 will not suck air into the accommodating space 230 of the first fresh food drawer 200a. Subsequently, the first interface of the control valve 600 can be connected to the second interface of the corresponding second fresh food drawer 200b, so that the air extraction device 900 sucks air into the accommodating space 230 of the second fresh food drawer 200b.

[0174] When the suction device 900 sucks air from the containing space 230 of the second fresh-keeping drawer 200b, the operating time of the suction device 900 can be set to be greater than or equal to 2 minutes and less than or equal to 5 minutes. For example, the operating time of the suction device 900 can be set to any of the following ranges: 2 minutes to 3 minutes, 3 minutes to 4 minutes, and 4 minutes to 5 minutes, to ensure the suction effect of the suction device 900 on the first fresh-keeping drawer 200a.

[0175] It should be noted that if the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b is higher than or equal to the pressure threshold, the suction device 900 is controlled to suck air from the storage space 230 of the second fresh-keeping drawer 200b. The opening time of the suction device 900 can be set to be greater than or equal to 4 minutes and less than or equal to 5 minutes, so that the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b can be lower than the preset pressure.

[0176] If the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b is higher than or equal to the preset pressure, but lower than or equal to the pressure threshold, the vacuum device 900 can be kept open. The opening time of the vacuum device 900 can be set to be greater than or equal to 2 minutes and less than or equal to 4 minutes, so that the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b can be lower than the preset pressure and the opening time of the vacuum device 900 can be reduced.

[0177] In some possible implementations, the control module 300 is configured to: after the air extraction device 900 transitions from the open state to the closed state, after an interval of downtime, control the air extraction device 900 to transition from the closed state to the open state; the downtime is greater than or equal to 1 hour and less than or equal to 6 hours.

[0178] It is easy to understand that after the vacuum device 900 switches from the open state to the closed state, after an interval of downtime, the vacuum device 900 switches from the closed state to the open state. This can extend the interval between the two opening processes of the vacuum device 900, reduce the possibility of damage to the vacuum device 900, and extend the service life of the vacuum device 900.

[0179] For example, the downtime is greater than or equal to 1 hour and less than or equal to 6 hours. The downtime can be set to any of the following: 1 hour-2 hours, 2 hours-3 hours, 3 hours-4 hours, 4 hours-5 hours, and 5 hours-6 hours, to extend the service life of the extraction device 900 and reduce the number of times the extraction device 900 is turned on.

[0180] It should be noted that when multiple food storage drawers 200 are simultaneously evacuated by a single evacuation device 900, the power required by the evacuation device 900 and the frequency of its use are relatively high. By setting the usage mode, evacuation frequency, shutdown time, interval time, and start time of the evacuation device 900, the possibility of damage to the evacuation device 900 can be reduced, thereby ensuring the service life of the evacuation device 900.

[0181] When the air extraction process of multiple fresh food drawers 200 is achieved simultaneously by a single air extraction device 900, the air extraction device 900 is prone to damage. If the usage method, air extraction frequency, downtime, interval time and start time of the air extraction device 900 are not restricted, the air extraction device 900 is prone to damage, making it generally unsuitable for the air extraction process of multiple fresh food drawers 200.

[0182] In some possible implementations, the control module 300 is configured to: acquire the leakage rates of the two containment spaces 230; determine the connection time between the first interface and the second interface of the corresponding containment space 230 based on the leakage rates of the containment spaces 230; and determine the connection time between the second interface and the containment space 230.

[0183] When the leakage rate of the containment space 230 is large, the current air pressure of the containment space 230 rises rapidly and reaches the preset pressure and pressure threshold more quickly. Therefore, the suction device 900 needs to be activated more quickly to evacuate the containment space 230, thereby reducing the current air pressure of the containment space 230. In other words, the interval between two consecutive evacuations of the containment space 230 by the suction device 900 is short.

[0184] When the first and second preservation drawers 200a and 200b remain locked, the current air pressure of their respective storage spaces 230 can be determined based on the air leakage rate. This eliminates the need to obtain the current air pressure of the first and second preservation drawers 200a and 200b through pressure sensors or similar structures. Instead, the current air pressure can be determined solely by the duration of the lock and the air leakage rate of the storage spaces 230. This makes the control of the extraction device 900 more flexible and convenient.

[0185] For example, if the leakage rate of the first fresh-keeping drawer 200a's storage space 230 is greater than the leakage rate of the second fresh-keeping drawer 200b's storage space 230, then the suction device 900 is kept always open so that when the suction device 900 can suck air from the first fresh-keeping drawer 200a's storage space 230 and the second fresh-keeping drawer 200b's storage space 230, the suction time of the suction device 900 from the first fresh-keeping drawer 200a's storage space 230 is greater than the suction time of the suction device 900 from the second fresh-keeping drawer 200b's storage space 230, so that the current air pressure of both the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b's storage space 230 can be reduced to below or equal to the preset pressure.

[0186] If the air leakage rate of the first fresh-keeping drawer 200a's storage space 230 is less than the air leakage rate of the second fresh-keeping drawer 200b's storage space 230, then the suction device 900 is kept always open so that when the suction device 900 can suck air from the first fresh-keeping drawer 200a's storage space 230 and the second fresh-keeping drawer 200b's storage space 230, the suction time of the suction device 900 from the first fresh-keeping drawer 200a's storage space 230 is less than the suction time of the suction device 900 from the second fresh-keeping drawer 200b's storage space 230, so that the current air pressure of both the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b's storage space 230 can be reduced to below or equal to the preset pressure.

[0187] In some possible implementations, the food storage drawer 200 can have a room temperature mode and a chilled mode. For example, the first food storage drawer 200a can maintain a room temperature mode, and the second food storage drawer 200b can maintain a chilled mode. The temperature of the storage space 230 of the second food storage drawer 200b is the same as the temperature of the first food storage drawer 200a.

[0188] It is easy to understand that when the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b are simultaneously evacuated by a single suction device 900, and the suction time of the suction device 900 on the first fresh-keeping drawer 200a is the same as the suction time of the suction device 900 on the second fresh-keeping drawer 200b, due to the effect of thermal expansion and contraction, the temperature of the containing space 230 of the first fresh-keeping drawer 200a is higher than the current temperature of the containing space 230 of the second fresh-keeping drawer 200b, which makes the current air pressure of the containing space 230 of the first fresh-keeping drawer 200a usually higher than the current air pressure of the containing space 230 of the second fresh-keeping drawer 200b.

[0189] When the suction device 900 sucks air from the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b, the suction device 900 is kept open at all times so that it can suck air from the storage space 230 of the first fresh-keeping drawer 200a and the storage space 230 of the second fresh-keeping drawer 200b. The suction time of the suction device 900 on the storage space 230 of the first fresh-keeping drawer 200a is greater than the suction time of the suction device 900 on the storage space 230 of the second fresh-keeping drawer 200b, so that the current air pressure in the storage spaces 230 of the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b can be reduced to below or equal to the preset pressure.

[0190] In some possible implementations, the refrigerator also includes a sterilization module, and the control module 300 is configured to acquire the current air pressure of the storage space 230 when the crisper drawer 200 is locked.

[0191] When the current air pressure of the containment space 230 is higher than the preset pressure, the air extraction device 900 is controlled to draw air into the containment space 230; after the air extraction device 900 draws air into the containment space 230 to reduce the current air pressure of the containment space 230 to less than or equal to the preset pressure, the ion sterilization module 400 is controlled to release sterilizing ions into the containment space 230.

[0192] If the food storage drawer 200 remains locked, the ion sterilization module 400 is controlled to release sterilizing ions into the containing space 230; during the process of the ion sterilization module 400 releasing sterilizing ions, the air extraction device 900 is controlled not to draw air from the containing space 230.

[0193] It is easy to understand that when the current air pressure in the containment space 230 is lower than the preset pressure, the suction device 900 is turned off. When the suction device 900 is in the off state, the current air pressure in the containment space 230 will increase over time, causing the current air pressure in the containment space 230 to gradually rise to the pressure threshold. By turning off the suction device 900 when the current air pressure in the containment space 230 is lower than the preset pressure, the interval between the two opening and closing processes of the suction device 900 can be extended, thereby reducing the operating frequency of the suction device 900.

[0194] After the air extraction device 900 is turned off, when the current air pressure in the containment space 230 rises to the preset pressure, the sterilization module is controlled to release sterilization ions into the containment space 230.

[0195] When the air pressure in the storage space 230 is lower than or equal to the preset pressure, the suction device 900 is turned off, and the ion sterilization module 400 is controlled to release sterilizing ions into the storage space 230. This sterilizes the food in the storage space 230, reducing the possibility of spoilage. If the food storage drawer 200 remains locked, the ion sterilization module 400 is controlled to release sterilizing ions into the storage space 230. During the release of sterilizing ions, the suction device 900 is controlled not to suck air into the storage space 230, thereby reducing the possibility of the sterilizing ions being drawn out of the food storage drawer 200 by the suction device 900.

[0196] It is easy to understand that when the current air pressure in the containment space 230 is lower than the preset pressure, the exhaust device 900 is turned off. After the exhaust device 900 is turned off, when the current air pressure in the containment space 230 rises to the preset pressure, the sterilization module is controlled to release sterilizing ions into the containment space 230. The air pressure in the containment space 230 increases, the internal environment of the containment space 230 becomes more stable, and the release of sterilizing ions into the containment space 230 makes the activity of sterilizing ions in the containment space 230 more stable, thereby making the concentration control of sterilizing ions more accurate.

[0197] In some possible implementations, after the food is placed in the storage space 230, the fresh food drawer 200 can be switched from a depressurized state to a locked state. The air extraction device 900 is controlled to extract air from the storage space 230 so that the air in the storage space 230 can be discharged to the outside of the fresh food drawer 200, so that the air pressure in the storage space 230 is lower than or equal to the preset pressure, and the storage space 230 can form a negative pressure state, thereby preserving the food through the storage space 230 in a negative pressure state.

[0198] For example, when it is necessary to use the food storage drawer 200 to store food, the food storage drawer 200 in a depressurized state can be pulled out from the mounting cavity 110, and then the food can be placed into the holding space 230 of the food storage drawer 200. Then the food storage drawer 200 containing the food can be placed into the mounting cavity 110, so that the holding space 230 is relatively sealed.

[0199] Subsequently, the air can be drawn from the sealed storage space 230 by the air extraction device 900 so that the air in the storage space 230 can be discharged to the outside of the fresh food drawer 200, so that the air pressure in the storage space 230 is lower than or equal to the preset pressure, thereby allowing the fresh food drawer 200 to switch from the depressurized state to the locked state.

[0200] When the air pressure in the containment space 230 is lower than or equal to the preset pressure, the air extraction device 900 is turned off, and the ion sterilization module 400 is controlled to release sterilizing ions into the containment space 230. The release time of the sterilizing ions is the first sterilization time.

[0201] In some possible implementations, when the air pressure in the containment space 230 is lower than or equal to the preset pressure, the exhaust device 900 is turned off, and the ion sterilization module 400 is controlled to release sterilizing ions into the containment space 230, thereby sterilizing the food in the containment space 230 by sterilizing ions and reducing the possibility of food spoilage. The release time of the sterilizing ions can be set as a first sterilization time, which can be adjusted according to different food to adapt to the sterilization conditions of different food.

[0202] For example, the control module 300 can also be configured to release sterilizing ions into the accommodating space 230 after the ion sterilization module 400 releases sterilizing ions into the accommodating space 230 when the fresh food drawer 200 changes from a depressurized state to a locked state, after the air extraction device 900 has completed the second waiting period.

[0203] It should be noted that after the air extraction device 900 completes the extraction, the air pressure in the containment space 230 is lower than the preset pressure. At this time, the internal environment of the containment space 230 is not stable enough, and the air pressure in the containment space 230 is at its lowest. The air pressure in the containment space 230 rises the fastest, making the movement of the bactericidal ions the most intense.

[0204] After the air extraction device 900 completes the second waiting period, the air pressure in the containment space 230 increases, the internal environment of the containment space 230 becomes more stable, and bactericidal ions are released into the containment space 230. The activity of the bactericidal ions in the containment space 230 is relatively stable, thereby making the concentration control of the bactericidal ions more accurate.

[0205] Furthermore, the second waiting time is between 20% and 40% of the time it takes for the containment space 230 to rise from the preset pressure to the pressure threshold, which makes the activity of bactericidal ions in the containment space 230 more stable. When the second waiting time is less than 20% of the time it takes for the containment space 230 to rise from the preset pressure to the pressure threshold, the activity of bactericidal ions in the containment space 230 is more intense, and the movement of bactericidal ions is more difficult to control.

[0206] When the second waiting time is greater than 40% of the time it takes for the pressure in the storage space 230 to rise from the preset pressure to the pressure threshold, the air pressure in the storage space 230 is relatively high. Although the activity of the bactericidal ions in the storage space 230 is relatively stable, the time it takes for the air pressure in the storage space 230 to rise to the pressure threshold is relatively short. When the concentration of bactericidal ions is still at a high level, they will be discharged to the outside of the preservation drawer 200 by the exhaust device 900, resulting in a large waste.

[0207] The pressure threshold can be determined based on a preset pressure. Furthermore, when the air pressure in the containment space 230 reaches the pressure threshold, the pumping device 900 can be controlled to pump air from the containment space 230, thereby reducing the air pressure in the containment space 230 to below or equal to the preset pressure. The pressure threshold is higher than the preset pressure. For example, the pressure threshold can be greater than or equal to 1.2 times the preset pressure.

[0208] For example, the preset pressure can be set between 0.6 atm and 0.8 atm. Then the pressure threshold can be set between 0.72 atm and 0.96 atm to ensure that the air pressure in the containment space 230 is always lower than atmospheric pressure.

[0209] In some possible implementations, the control module 300 may be configured to: when the food storage drawer 200 is in a locked state, determine whether the air pressure in the accommodating space 230 is higher than a pressure threshold, the pressure threshold being determined based on a preset pressure.

[0210] If the air pressure in the containment space 230 is higher than the pressure threshold, the air extraction device 900 is controlled to extract air from the containment space 230 so that the air pressure in the containment space 230 is lower than or equal to the preset pressure.

[0211] Specifically, when the food storage drawer 200 is locked, it is determined whether the air pressure in the storage space 230 is higher than the pressure threshold. The pressure threshold is determined based on the preset pressure, wherein the pressure threshold is higher than the preset pressure.

[0212] If the air pressure in the containment space 230 is higher than the pressure threshold, the air extraction device 900 is controlled to extract air from the containment space 230 so that the air pressure in the containment space 230 is lower than or equal to the preset pressure, so that the air pressure in the containment space 230 is always below the pressure threshold, thereby ensuring the preservation effect of the containment space 230 on the food and reducing the possibility of food spoilage.

[0213] It is easy to understand that when the food storage drawer 200 is locked, the air pressure in the storage space 230 will increase over time. Therefore, the air extraction device 900 needs to extract air from the storage space 230 multiple times. The pressure threshold is greater than or equal to 1.2 times the preset pressure. This reduces the number of times the air extraction device 900 extracts air from the storage space 230 while ensuring the food storage drawer 200's preservation effect, making the control process of the food storage drawer 200 more convenient.

[0214] When the food storage drawer 200 is locked and the air pressure inside the storage space 230 reaches the first air pressure, the ion sterilization module 400 is controlled to release sterilizing ions into the storage space 230. The release duration of the sterilizing ions is the second sterilization duration. The second sterilization duration is shorter than the first sterilization duration.

[0215] In some possible implementations, when the food storage drawer 200 is locked and the air pressure in the storage space 230 rises from a preset pressure to a first pressure, the ion sterilization module 400 releases sterilizing ions into the storage space 230. When the food storage drawer 200 is locked, the air pressure in the storage space 230 will increase over time, therefore, the air extraction device 900 needs to repeatedly extract air from the storage space 230 to reduce the air pressure back to below or equal to the preset pressure.

[0216] The first pressure can be determined based on a pressure threshold and a preset pressure. For example, the first pressure can be higher than the preset pressure and lower than the pressure threshold. When the pressure in the containment space 230 increases, the pressure in the containment space 230 can increase from the preset pressure to the first pressure, so that the ion sterilization module 400 can release sterilizing ions during the process of the pressure increasing from the preset pressure to the pressure threshold.

[0217] When the air pressure in the containment space 230 can rise from the preset pressure to the first air pressure, the release time of the bactericidal ions is the second bactericidal time. The second bactericidal time is shorter than the first bactericidal time. Therefore, by setting different first and second bactericidal times, a relatively constant concentration of bactericidal ions can be maintained in the containment space 230, maintaining the bactericidal effect of the bactericidal ions on the food and preventing the possibility of excessively high bactericidal ion concentrations.

[0218] For example, the control module 300 is configured as follows:

[0219] After the air extraction device 900 completes the first waiting time, the ion sterilization module 400 releases sterilizing ions into the containment space 230; wherein, the first waiting time is determined according to the time it takes for the containment space 230 to rise from a preset pressure to a pressure threshold.

[0220] With this setup, when the air extraction device 900 finishes extracting the air, the air pressure in the containment space 230 is lower than the preset pressure. At this time, the internal environment of the containment space 230 is not stable enough, and the air pressure in the containment space 230 is at its lowest. The air pressure in the containment space 230 rises the fastest, making the movement of the bactericidal ions the most intense.

[0221] After the air extraction device 900 completes the first waiting time, the air pressure in the containment space 230 increases, the internal environment of the containment space 230 becomes more stable, and bactericidal ions are released into the containment space 230. The activity of the bactericidal ions in the containment space 230 is relatively stable, thereby making the concentration control of the bactericidal ions more accurate.

[0222] The first waiting time can be set to be between 20% and 40% of the time it takes for the pressure in the containment space 230 to rise from a preset pressure to a pressure threshold. The first waiting time and the second waiting time can be the same, or the first waiting time can be longer than the second waiting time, or the first waiting time can be shorter than the first waiting time.

[0223] It is easy to understand that the first waiting time is between 20% and 40% of the time it takes for the containment space 230 to rise from the preset pressure to the pressure threshold, which makes the activity of bactericidal ions in the containment space 230 relatively stable. When the first waiting time is less than 20% of the time it takes for the containment space 230 to rise from the preset pressure to the pressure threshold, the activity of bactericidal ions in the containment space 230 is more intense, and the movement of bactericidal ions is more difficult to control.

[0224] When the first waiting time is greater than 40% of the time it takes for the pressure in the storage space 230 to rise from the preset pressure to the pressure threshold, the air pressure in the storage space 230 is relatively high. Although the activity of the bactericidal ions in the storage space 230 is relatively stable, the time it takes for the air pressure in the storage space 230 to rise to the pressure threshold is short. When the concentration of bactericidal ions is still in a high state, they will be discharged to the outside of the preservation drawer 200 by the exhaust device 900, resulting in a large waste.

[0225] The ion sterilization module 400 can have a first mode and a second mode. When the ion sterilization module 400 is in the first mode, it releases a first sterilization ion. When the ion sterilization module 400 is in the second mode, it releases a second sterilization ion. The first and second sterilization ions are of different types so that the fresh food drawer 200 can be suitable for the preservation environment of different foods.

[0226] For example, when the ion sterilization module 400 is in the first mode, the ion sterilization module 400 is set as a corona discharge module, and the first sterilization ion is set as a strong oxidizing sterilization ion. The strong oxidizing active substance may include one or more of ozone, atomic oxygen, and ground state oxygen. When the ion sterilization module 400 is in the first mode, the ion sterilization module 400 mainly removes odors and sterilizes them. The ion sterilization module 400 mainly uses strong oxidizing sterilization ions to play a certain role in deodorizing the food in the containing space 230.

[0227] When the ion sterilization module 400 is in the second mode, the ion sterilization module 400 is set as an air discharge module, and the second sterilization ion is set as a positive and negative sterilization ion. The positive and negative sterilization ions can neutralize the charge on the surface of microorganisms, causing them to lose their activity, thereby achieving the sterilization effect.

[0228] When the ion sterilization module 400 is in the second mode, the positive and negative sterilization ions can destroy the cell walls and cell membranes of microorganisms, causing leakage of cell contents and thus killing the microorganisms. Negative ions can generate free radicals (such as hydroxyl radicals), which have strong oxidizing properties and can damage the proteins and DNA of microorganisms.

[0229] It should be noted that the current mode of the food storage drawer 200 can be set to a relatively high-pressure mode and a low-pressure mode. When the food storage drawer 200 is in high-pressure mode, the storage space 230 of the food storage drawer 200 can be in a normal pressure state, or the storage space 230 of the food storage drawer 200 can be in a negative pressure state.

[0230] For example, the current mode of the fresh food drawer 200 can be set to normal mode and fresh food mode. When the first fresh food drawer 200a is in normal mode, it is in high-pressure mode. When the second fresh food drawer 200b is in fresh food mode, it can be in low-pressure mode.

[0231] When the food storage drawer 200 is in low-pressure mode, its storage space 230 can be in a negative pressure state. Furthermore, compared to the high-pressure mode, the air pressure in the storage space 230 of the food storage drawer 200 in low-pressure mode is lower than the air pressure in the storage space 230 of the food storage drawer 200 in high-pressure mode, so that the food storage drawer 200 can be used to store different types of food.

[0232] It should be noted that when the suction device 900 is controlling the suction device 900 to suction air from the storage space 230 of the first fresh-keeping drawer 200a in normal mode and the storage space 230 of the second fresh-keeping drawer 200b in fresh-keeping mode, for example, when the suction device 900 is controlling the suction device 900 to suction air from the storage space 230 of the first fresh-keeping drawer 200a and then suction air from the storage space 230 of the second fresh-keeping drawer 200b, the specific method is as follows:

[0233] When the suction device 900 is used to suction air from the storage space 230 of the first fresh-keeping drawer 200a and the storage space 230 of the second fresh-keeping drawer 200b, the operating time of the suction device 900 can be set to be greater than or equal to 5 minutes and less than or equal to 8 minutes. For example, the operating time of the suction device 900 can be set to any of the following ranges: 5 minutes to 6 minutes, 6 minutes to 7 minutes, and 7 minutes to 8 minutes, to ensure the suction effect of the suction device 900 on the first fresh-keeping drawer 200a.

[0234] The air extraction device 900 is kept open at all times. Then, the first interface of the control valve 600 can be disconnected from the second interface of the corresponding first fresh food drawer 200a, so that the air extraction device 900 will not suck air into the accommodating space 230 of the first fresh food drawer 200a. Subsequently, the first interface of the control valve 600 can be connected to the second interface of the corresponding second fresh food drawer 200b, so that the air extraction device 900 sucks air into the accommodating space 230 of the second fresh food drawer 200b.

[0235] When the air extraction device 900 extracts air from the storage space 230 of the second fresh-keeping drawer 200b, the opening time of the air extraction device 900 can be set to greater than or equal to 2 minutes and less than or equal to 5 minutes.

[0236] For example, the opening time of the suction device 900 can be set to any of the following ranges: 2 minutes to 3 minutes, 3 minutes to 4 minutes, and 4 minutes to 5 minutes, in order to ensure the suction effect of the suction device 900 on the first food storage drawer 200a.

[0237] It is easy to understand that when the second fresh-keeping drawer 200b is in the chilled mode, the current air pressure of the storage space 230 of the second fresh-keeping drawer 200b is usually lower than the current air pressure of the storage space 230 of the first fresh-keeping drawer 200a. This makes the current air pressure of the second fresh-keeping drawer 200b in chilled mode basically the same as the current air pressure of the first fresh-keeping drawer 200a in normal mode, and can reduce the time that the exhaust device 900 is in working state, thus extending the service life of the exhaust device 900.

[0238] In some possible implementations, after the food is placed in the storage space 230, the fresh food drawer 200 can be switched from a depressurized state to a locked state. The air extraction device 900 is controlled to extract air from the storage space 230 so that the air in the storage space 230 can be discharged to the outside of the fresh food drawer 200, so that the current air pressure in the storage space 230 is lower than or equal to the preset pressure, and the storage space 230 can form a negative pressure state, thereby preserving the food through the storage space 230 in a negative pressure state.

[0239] For example, when it is necessary to use the food storage drawer 200 to store food, the food storage drawer 200 in a depressurized state can be pulled out from the mounting cavity 110, and then the food can be placed into the holding space 230 of the food storage drawer 200. Then the food storage drawer 200 containing the food can be placed into the mounting cavity 110, so that the holding space 230 is relatively sealed.

[0240] Subsequently, the air can be drawn from the sealed storage space 230 by the air extraction device 900 so that the air in the storage space 230 can be discharged to the outside of the fresh food drawer 200, so that the current air pressure of the storage space 230 is lower than or equal to the preset pressure. The pressure sensor 700 can transmit the current air pressure of the storage space 230 to the control module, so that the fresh food drawer 200 can switch from the depressurized state to the locked state.

[0241] In some possible implementations, the control module 300 may be configured to: when the food storage drawer 200 is in a locked state, determine whether the current air pressure of the accommodating space 230 is higher than a pressure threshold, the pressure threshold being determined based on a preset pressure.

[0242] If the current air pressure of the containment space 230 is higher than the pressure threshold, the air extraction device 900 is controlled to extract air from the containment space 230 so that the current air pressure of the containment space 230 is lower than or equal to the preset pressure.

[0243] Specifically, when the food storage drawer 200 is locked, it is determined whether the current air pressure of the storage space 230 is higher than the pressure threshold. The pressure threshold is determined according to the preset pressure, wherein the pressure threshold is higher than the preset pressure.

[0244] If the current air pressure in the storage space 230 is higher than the pressure threshold, the air extraction device 900 is controlled to extract air from the storage space 230 so that the current air pressure in the storage space 230 is lower than or equal to the preset pressure, so that the current air pressure in the storage space 230 is always below the pressure threshold, thereby ensuring the preservation effect of the storage space 230 on the food and reducing the possibility of food spoilage.

[0245] The pressure threshold can be determined based on a preset pressure. Furthermore, when the air pressure in the containment space 230 reaches the pressure threshold, the pumping device 900 can be controlled to pump air from the containment space 230, thereby reducing the air pressure in the containment space 230 to below or equal to the preset pressure. The pressure threshold is higher than the preset pressure. For example, the pressure threshold can be greater than or equal to 1.2 times the preset pressure.

[0246] For example, the preset pressure can be set between 0.6 atm and 0.8 atm. Then the pressure threshold can be set between 0.72 atm and 0.96 atm to ensure that the air pressure in the containment space 230 is always lower than atmospheric pressure.

[0247] It is easy to understand that when the freshness drawer 200 is locked, the current air pressure in the storage space 230 will increase over time. Therefore, the air extraction device 900 needs to extract air from the storage space 230 multiple times. The pressure threshold is greater than or equal to 1.2 times the preset pressure. This reduces the number of times the air extraction device 900 extracts air from the storage space 230 while ensuring the freshness preservation effect of the freshness drawer 200, making the control process of the freshness drawer 200 more convenient.

[0248] It should be noted that the control of the suction device 900 to draw air into the containing space 230 can be achieved in two situations. One of these situations is set as follows: when the fresh food drawer 200 starts to change from the depressurized state to the locked state, the fresh food drawer 200 is at normal pressure. In this case, the suction device 900 can be controlled to draw air into the containing space 230, so that the current air pressure of the containing space 230 can be reduced to a level lower than or equal to a preset pressure. For example, the current air pressure of the containing space 230 can be lower than the preset pressure, thereby enabling the containing space 230 to form a negative pressure state.

[0249] Another scenario is set up as follows: when the food storage drawer 200 is locked, the current air pressure of the storage space 230 will increase over time and the storage space 230 will be in a negative pressure state. However, the current air pressure of the storage space 230 is higher than the pressure threshold. Therefore, the storage space 230 needs to be evacuated multiple times by the air extraction device 900 so that the current air pressure of the storage space 230 can be reduced back to below or equal to the preset pressure.

[0250] It should be noted that when the ion sterilization module 400 is in the first or second mode, the air extraction device 900 can be controlled to be in the off state.

[0251] When the air pressure in the storage space 230 is lower than or equal to the preset pressure, the suction device 900 is turned off, and the ion sterilization module 400 is controlled to release sterilizing ions into the storage space 230. This sterilizes the food in the storage space 230, reducing the possibility of spoilage. If the fresh food drawer 200 remains locked, the ion sterilization module 400 is controlled to release sterilizing ions into the storage space 230. During the release of sterilizing ions, the suction device 900 is controlled not to suck air into the storage space 230, thereby reducing the possibility of sterilizing ions being drawn out of the fresh food drawer 200 by the suction device 900.

[0252] In some possible implementations, when the food storage drawer 200 changes from a depressurized state to a locked state, the current mode of the food storage drawer 200 can be obtained. Specifically, it can be set to: when the food storage drawer 200 changes from a depressurized state to a locked state, obtain the types of food in the accommodating space 230; and control the current mode of the food storage drawer 200 according to the types of food.

[0253] With this configuration, when the food storage drawer 200 changes from the depressurized state to the locked state, the types of food in the storage space 230 are obtained; based on the types of food, the current mode of the food storage drawer 200 is controlled, thereby enabling the switching of the ion sterilization module 400 mode according to the current mode of the food storage drawer 200, making the control process of the ion sterilization module 400 more convenient.

[0254] For example, fruits and vegetables, especially those with a large transpiration surface area (leafy vegetables like spinach) and high moisture content (fruits like cherries and mulberries), are prone to transpiration and water loss under low pressure due to their large surface area, failing to achieve ideal preservation. To reduce transpiration and water loss, a normal pressure, low-oxygen mode is suitable, which reduces respiration, preserves nutrients, minimizes transpiration and water loss, and improves freshness.

[0255] For dry foods (such as dried fruits, tea, and grains), there is no issue of moisture evaporation. They are suitable for low-pressure storage, where they are stored in a low-oxygen, low-pressure environment to reduce respiration, preserve nutrients, and extend shelf life.

[0256] For ingredients with normal humidity (such as root vegetables like potatoes and sweet potatoes), their transpiration loss is normal and they can be stored in a low-pressure mode.

[0257] For example, the refrigerator may be equipped with a food identification device, allowing users to select food items through the user interface and place them in the low-pressure preservation drawer 200.

[0258] For example, RFID technology can be used, with tags containing information about the ingredients attached to them. An ingredient identification device identifies the tags to retrieve this information. Based on the type of ingredient stored in the low-pressure storage device, the appropriate storage method is automatically determined.

[0259] The food identification device is configurable and equipped with a scanning device to obtain information from the label on the food when scanning it. The food information stored in the label can be configurable and includes the food name, type (e.g., high humidity, dry, moderate humidity), and quantity (e.g., weight, quantity).

[0260] In some embodiments of this application, the food identification device adopts an image acquisition and fuzzy comparison to confirm the type of food. The food identification device acquires images of the food and sends them to the controller. The controller compares the images, sizes and other relevant information in the internally stored food database to obtain the name, type and quantity of the food, and automatically determines the appropriate storage mode.

[0261] In some embodiments of this application, when a mixture of different types of ingredients is placed in the food, the storage mode is selected by determining the type and quantity of the ingredients. For example, when there are more leafy vegetables, a high-pressure mode is selected for preservation; when there are more root vegetables, a low-pressure mode is selected; and when there are more dry ingredients, a low-pressure mode is selected.

[0262] If the current mode of the fresh food drawer 200 is set to high pressure mode, the control ion sterilization module 400 is always in the first mode. When the fresh food drawer 200 is in high pressure mode, the food inside the fresh food drawer 200 is relatively less likely to breed bacteria, and the environment of the storage space 230 has a relatively high air pressure.

[0263] The ion sterilization module 400 is always in the first mode, so that it can mainly remove odors and sterilize. The ion sterilization module 400 mainly uses strong oxidizing sterilization ions to remove odors from the food in the container space 230.

[0264] If the food storage drawer 200 is in low-pressure mode, and the time during which the food storage drawer 200 remains locked is less than or equal to a set time, the control module 300 is configured as follows:

[0265] When the food preservation drawer 200 switches from the pressure relief state to the locked state, the control ion sterilization module 400 is in the second mode;

[0266] In some possible implementations, the refrigerator may also include a pressure sensor 700 disposed within the accommodating space 230, the output of which may be connected to the control module 300.

[0267] For example, the pressure sensor 700 can be used to obtain the current air pressure of the containment space 230, so that the control module 300 can control the start and stop of the air extraction device 900 according to the current air pressure of the containment space 230.

[0268] The refrigerator may also include an odor sensor 800, which may be located within the containment space 230, and the output of the odor sensor 800 may be connected to the control module 300.

[0269] For example, the odor sensor 800 can be used to obtain the gas concentration in the containment space 230, thereby enabling the control module 300 to control the start and stop of the odor removal module 500 based on the gas concentration in the containment space 230.

[0270] When the food storage drawer 200 is locked, the current air pressure in the storage space 230 can be obtained through the pressure sensor 700, and the gas concentration in the storage space 230 can be obtained through the odor sensor 800. Thus, the start and stop of the vacuum device 900 can be controlled by the current air pressure and gas concentration in the storage space 230.

[0271] For example, the second fresh-keeping drawer 200b is opened, and the current mode of the second fresh-keeping drawer 200b is set to the chilled mode. Food is placed into the holding space 230 of the second fresh-keeping drawer 200b. At this time, the current temperature of the holding space 230 of the second fresh-keeping drawer 200b is close to the ambient temperature of 20°C.

[0272] The air extraction device 900 extracts air from the second refrigerator drawer 200b for approximately 5-10 minutes. During this time, the current temperature inside the second refrigerator drawer 200b drops to 0.75-0.8 atm. The second refrigerator drawer 200b will reach the set temperature of 0℃ in about 2 hours after the cooling is turned on.

[0273] At this time, the current air pressure inside the second food storage drawer 200b will reach 0.6-0.7 atm due to thermal expansion and contraction, making the current air pressure of the second food storage drawer 200b too low, which will affect the service life of the second food storage drawer 200b.

[0274] When the first fresh-keeping drawer 200a is set to normal mode, the second fresh-keeping drawer 200b is set to chilled mode. The first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b are controlled by the control valve 600, which simultaneously controls the vacuum device 900 to be in working condition. When the vacuum device 900 evacuates air from the first fresh-keeping drawer 200a, it lowers the current air pressure of the first fresh-keeping drawer 200a below a preset pressure. When the vacuum device 900 evacuates air from the second fresh-keeping drawer 200b, it ensures that the current air pressure of the second fresh-keeping drawer 200b is higher than that of the first fresh-keeping drawer 200a, thereby reducing the possibility of damage to the second fresh-keeping drawer 200b due to excessively low current air pressure.

[0275] In some possible implementations, when the suction device 900 is controlled to suction air from the storage space 230 of the first fresh-keeping drawer 200a in normal mode and the storage space 230 of the second fresh-keeping drawer 200b in fresh-keeping mode, for example, when the suction device 900 is controlled to suction air from the storage space 230 of the first fresh-keeping drawer 200a and then from the storage space 230 of the second fresh-keeping drawer 200b, the specific method is as follows:

[0276] When the air extraction device 900 is used to extract air from the storage space 230 of the first fresh food drawer 200a, the opening time of the air extraction device 900 can be set to be greater than or equal to 5 minutes and less than or equal to 8 minutes, so that the current air pressure in the storage space 230 of the first fresh food drawer 200a can be lower than the preset pressure.

[0277] For example, the opening time of the vacuum device 900 can be set to any of the following ranges: 5-6 minutes, 6-7 minutes, and 7-8 minutes, to ensure the suction effect of the vacuum device 900 on the first food storage drawer 200a.

[0278] The air extraction device 900 is kept open at all times. Then, the first interface of the control valve 600 can be disconnected from the second interface of the corresponding first fresh food drawer 200a, so that the air extraction device 900 will not suck air into the accommodating space 230 of the first fresh food drawer 200a. Subsequently, the first interface of the control valve 600 can be connected to the second interface of the corresponding second fresh food drawer 200b, so that the air extraction device 900 sucks air into the accommodating space 230 of the second fresh food drawer 200b.

[0279] When the air extraction device 900 extracts air from the storage space 230 of the second fresh-keeping drawer 200b, the opening time of the air extraction device 900 can be set to be greater than or equal to 2 minutes and less than or equal to 5 minutes, so that the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b is lower than the preset pressure, and the current air pressure in the storage space 230 of the second fresh-keeping drawer 200b is lower than the current air pressure in the storage space 230 of the first fresh-keeping drawer 200a.

[0280] Alternatively, when the air extraction device 900 extracts air from the storage space 230 of the second fresh-keeping drawer 200b, the current air pressure of the storage space 230 of the second fresh-keeping drawer 200b can be higher than or equal to a preset pressure, or the current air pressure of the storage space 230 of the second fresh-keeping drawer 200b can be lower than a pressure threshold.

[0281] When the second refrigerator drawer 200b is turned on for cooling, the storage space 230 of the second refrigerator drawer 200b will reach the set temperature of 0°C. The current air pressure in the storage space 230 of the second refrigerator drawer 200b will be further reduced, so that the current air pressure in the storage space 230 of the second refrigerator drawer 200b can be reduced to below the preset pressure, so that the current air pressure in the storage spaces 230 of the first refrigerator drawer 200a and the second refrigerator drawer 200b is close, and the time interval between the first refrigerator drawer 200a and the second refrigerator drawer 200b is close.

[0282] For example, the opening time of the suction device 900 can be set to any of the following ranges: 2 minutes to 3 minutes, 3 minutes to 4 minutes, and 4 minutes to 5 minutes, in order to ensure the suction effect of the suction device 900 on the first food storage drawer 200a.

[0283] It is easy to understand that when the second fresh-keeping drawer 200b is in the chilled mode, the current air pressure of the storage space 230 of the second fresh-keeping drawer 200b is usually lower than the current air pressure of the storage space 230 of the first fresh-keeping drawer 200a. This makes the current air pressure of the second fresh-keeping drawer 200b in chilled mode basically the same as the current air pressure of the first fresh-keeping drawer 200a in normal mode, and can reduce the time that the exhaust device 900 is in working state, thus extending the service life of the exhaust device 900.

[0284] In some possible implementations, after the food is placed in the storage space 230, the fresh food drawer 200 can be switched from a depressurized state to a locked state. The air extraction device 900 is controlled to extract air from the storage space 230 so that the air in the storage space 230 can be discharged to the outside of the fresh food drawer 200, so that the current air pressure in the storage space 230 is lower than or equal to the preset pressure, and the storage space 230 can form a negative pressure state, thereby preserving the food through the storage space 230 in a negative pressure state.

[0285] When the food storage drawer 200 transitions from the depressurized state to the locked state, the ion sterilization module 400 is controlled to enter the second mode. Since the food has just been placed into the storage space 230, the odor generated in the storage space 230 is relatively small. Therefore, the ion sterilization module 400 can be controlled to enter the first mode, where the ion sterilization module 400 primarily focuses on deodorization with sterilization as a secondary function. The ion sterilization module 400 mainly uses strong oxidizing sterilizing ions to achieve a certain deodorizing effect on the food in the storage space 230.

[0286] When the food storage drawer 200 is continuously locked for a time greater than or equal to the locking time, the odor concentration in the storage space 230 is obtained, and the locking time is less than the set time.

[0287] For example, when the food preservation drawer 200 is continuously locked for a time greater than or equal to the locking time, the odor concentration in the storage space 230 is obtained, so that the ion sterilization module 400 can be controlled to be in the first mode or the second mode according to the odor concentration in the storage space 230, so as to make the use of the ion sterilization module 400 more convenient.

[0288] If the odor concentration is higher than the first set concentration but lower than the second set concentration, the ion sterilization module 400 is controlled to be in the first mode; if the odor concentration is higher than the second set concentration, the ion sterilization module 400 is controlled to be in the second mode.

[0289] When the food storage drawer 200 is continuously locked for a period of time greater than or equal to the locking time, the odor concentration in the storage space 230 is obtained. If the odor concentration is higher than the first set concentration but lower than the second set concentration, the ion sterilization module 400 is controlled to be in the first mode to maintain a relatively constant sterilization effect. If the odor concentration is higher than the second set concentration, the ion sterilization module 400 is controlled to be in the second mode to improve the sterilization effect of the ion sterilization module 400 on the storage space 230.

[0290] It should be noted that the first set concentration is greater than or equal to 60% of the second set concentration.

[0291] The first set concentration is greater than or equal to 60% of the second set concentration, which ensures that the ion sterilization module 400 can switch better between the first mode and the second mode. When the first set concentration is greater than or equal to 60% of the second set concentration, the number of times the ion sterilization module 400 releases strong oxidizing sterilizing ions in the first mode is reduced, thereby achieving the effect of energy saving and reducing waste.

[0292] It is easy to understand that when the food storage drawer 200 is continuously locked, the odor concentration in the storage space 230 will gradually increase over time, eventually reaching a first or second set concentration. The state of the food is determined based on the odor concentration in the storage space 230. When the odor concentration in the storage space 230 is higher than the first set concentration but lower than the second set concentration, the ion sterilization module 400 primarily deodorizes, with sterilization as a secondary function. The ion sterilization module 400 mainly uses strong oxidizing sterilizing ions to achieve a certain degree of odor removal for the food in the storage space 230.

[0293] If the odor concentration is higher than the second set concentration, the ion sterilization module 400 is controlled to be in the second mode. The ion sterilization module 400 is set to an air discharge module, and the second sterilization ion is set to positive and negative sterilization ions. The positive and negative sterilization ions can neutralize the charge on the surface of food microorganisms, thereby achieving the sterilization effect.

[0294] The control module 300 is configured such that after the ion sterilization module 400 releases sterilizing ions into the containing space 230, if the fresh-keeping drawer 200 remains locked for a period longer than a set time, the gas concentration remains higher than a first set concentration.

[0295] Before the food storage drawer 200 transitions from the self-locking state to the depressurization state, the control module 300 no longer acquires the gas concentration.

[0296] By adopting the above technical solution, after controlling the ion sterilization module 400 to release sterilization ions into the containing space 230 and controlling the deodorizing module 500 to release deodorizing ions into the containing space 230, if the gas concentration is always greater than the set concentration within a set time, it can be confirmed that the odor of the food is difficult to remove, or that the food is a special food with an odor that is difficult to remove, making it difficult for the deodorizing module 500 to remove the odor of the food by releasing deodorizing ions.

[0297] Before the food storage drawer 200 transitions from the self-locking state to the depressurization state, the control module 300 no longer acquires gas concentration, thereby reducing the possibility of the deodorizing module 500 repeatedly releasing deodorizing ions into the containing space 230, thus reducing the possibility of waste caused by the deodorizing module 500 releasing deodorizing ions.

[0298] In some possible implementations, the food storage drawer 200 may include a deodorizing module 500. The deodorizing module 500 is capable of releasing deodorizing ions into the containing space 230, thereby achieving a deodorizing process in the containing space 230 through the deodorizing ions released by the deodorizing module 500, reducing the possibility of cross-contamination of odors among various food items in the containing space 230.

[0299] The control module 300 can be configured such that if the food storage drawer 200 is in low-pressure mode and the time during which the food storage drawer 200 is continuously locked is less than or equal to a set time, the control module 300 is configured as follows:

[0300] When the food storage drawer 200 changes from the pressure relief state to the locked state, the deodorizing module 500 releases deodorizing ions into the containing space 230.

[0301] When the food storage drawer 200 is continuously locked for a period of time greater than or equal to the locking time, the odor concentration in the storage space 230 is obtained, and the locking time is less than the set time; if the odor concentration is higher than the first set concentration, the odor removal module 500 is controlled to release odor removal ions into the storage space 230.

[0302] When the food storage drawer 200 changes from the depressurized state to the locked state, the deodorizing module 500 releases deodorizing ions into the containing space 230; when the food storage drawer 200 is continuously in the locked state for a time greater than or equal to the locking time, the odor concentration in the containing space 230 is obtained, and the locking time is less than the set time.

[0303] If the odor concentration is higher than the first set concentration, the deodorizing module 500 is controlled to release deodorizing ions into the containing space 230, thereby removing the odor in the containing space 230 through the deodorizing ions, so as to ensure that the containing space 230 will not have cross-contamination of odors.

[0304] In summary, after placing the food into the storage space 230, the fresh food drawer 200 can be switched from a depressurized state to a locked state. The air extraction device is controlled to extract air from the storage space 230 so that the air inside the storage space 230 can be discharged to the outside of the fresh food drawer 200, so that the air pressure in the storage space 230 is lower than or equal to the preset pressure, and the storage space 230 can form a negative pressure state, thereby preserving the food through the storage space 230 under negative pressure.

[0305] When the food storage drawer 200 switches from the pressure relief state to the locked state, the control ion sterilization module 400 is in the second mode. The control ion sterilization module 400 releases sterilizing ions into the storage space 230, thereby sterilizing the food in the storage space 230 and reducing the possibility of food spoilage.

[0306] When the food storage drawer 200 remains locked for a period of time greater than or equal to the locking time, the odor concentration within the storage space 230 is measured, provided the locking time is less than a set time. If the odor concentration is higher than a first set concentration but lower than a second set concentration, the ion sterilization module 400 is controlled to operate in a first mode to maintain a relatively constant sterilization effect. If the odor concentration is higher than the second set concentration, the ion sterilization module 400 is controlled to operate in a second mode to improve the sterilization effect of the ion sterilization module 400 on the storage space 230.

[0307] It should be noted that when the food storage drawer 200 transitions from the depressurized state to the locked state, the food storage drawer 200 is at normal pressure. At this time, the air extraction device 900 can be controlled to draw air into the storage space 230, so that the current air pressure of the storage space 230 can be reduced to below or equal to the preset pressure. For example, the current air pressure of the storage space 230 can be lower than the preset pressure, thereby enabling the storage space 230 to form a negative pressure state.

[0308] For example, the first interface of the control valve 600 is connected to the corresponding second interface, and the air extraction device 900 is controlled to draw air into the accommodating space 230 of the first preservation drawer 200a.

[0309] When the food storage drawer 200 transitions from the depressurization state to the locked state, the first interface of the control valve 600 can be connected to the second interface of the corresponding first food storage drawer 200a, so that the suction device 900 can be connected to the accommodating space 230 of the first food storage drawer 200a through the first and second interfaces, and the suction device 900 can be controlled to suck air from the accommodating space 230 of the first food storage drawer 200a, thereby enabling the accommodating space 230 of the first food storage drawer 200a to form a negative pressure state.

[0310] Then, the first interface of the control valve 600 is disconnected from the second interface of the corresponding first fresh-keeping drawer 200a, and the first interface of the control valve 600 is connected to the second interface of the corresponding second fresh-keeping drawer 200b, so that the suction device 900 can connect to the accommodating space 230 of the second fresh-keeping drawer 200b through the first and second interfaces. The suction device 900 is controlled to suck air into the accommodating space 230 of the second fresh-keeping drawer 200b, thereby enabling the accommodating space 230 of the second fresh-keeping drawer 200b to form a negative pressure state, so that the accommodating spaces 230 of the first fresh-keeping drawer 200a and the second fresh-keeping drawer 200b can respectively form a negative pressure state.

[0311] When the food preservation drawer 200 transitions from the depressurized state to the locked state, the accommodating spaces 230 of the first food preservation drawer 200a and the second food preservation drawer 200b can respectively form a negative pressure state. Then, the ion sterilization module 400 can be controlled to release sterilizing ions into the accommodating space 230, and the deodorizing module 500 can be controlled to release deodorizing ions into the accommodating space 230. For example, the ion sterilization module 400 can be controlled to be in a second mode.

[0312] Since the food has just been placed into the holding space 230, the odor generated in the holding space 230 is relatively small. Therefore, when the ion sterilization module 400 is in the first mode, the ion sterilization module 400 mainly removes odors and sterilizes them. The ion sterilization module 400 mainly uses strong oxidizing sterilization ions to remove odors from the food in the holding space 230.

[0313] When the food storage drawer 200 is locked, the current air pressure in the storage space 230 will increase over time and the storage space 230 will be in a negative pressure state. However, the current air pressure in the storage space 230 is higher than the pressure threshold. Therefore, the storage space 230 needs to be evacuated multiple times by the air extraction device 900 so that the current air pressure in the storage space 230 can be reduced back to below or equal to the preset pressure.

[0314] When the food preservation drawer 200 is continuously locked for a period of time greater than or equal to the locking time, the odor concentration in the storage space 230 is obtained. Based on the odor concentration in the storage space 230, the ion sterilization module 400 can be controlled to be in the first mode or the second mode, so as to make the use of the ion sterilization module 400 more convenient.

[0315] If the odor concentration is higher than the first set concentration but lower than the second set concentration, the ion sterilization module 400 is controlled to be in the first mode; if the odor concentration is higher than the second set concentration, the ion sterilization module 400 is controlled to be in the second mode.

[0316] When the food storage drawer 200 is continuously locked for a period of time greater than or equal to the locking time, the odor concentration in the storage space 230 is obtained. If the odor concentration is higher than the first set concentration but lower than the second set concentration, the ion sterilization module 400 is controlled to be in the first mode to maintain a relatively constant sterilization effect. If the odor concentration is higher than the second set concentration, the ion sterilization module 400 is controlled to be in the second mode to improve the sterilization effect of the ion sterilization module 400 on the storage space 230.

[0317] The refrigerator may also include a photodynamic sterilization module. The control module 300 is configured to control the photodynamic sterilization module to irradiate the accommodating space 230 when the crisper drawer 200 is locked. The working wavelength of the photodynamic sterilization module is greater than or equal to 390 nanometers and less than or equal to 420 nanometers.

[0318] For example, the operating wavelength of the photodynamic sterilization module can be set to any wavelength range of 390 nm-400 nm, 400 nm-410 nm, or 410 nm-420 nm.

[0319] When the air extraction device 900 extracts air from the containing space 230, the photodynamic sterilization module is activated simultaneously; and / or, when the ion sterilization module 400 releases sterilizing ions into the containing space 230, the photodynamic sterilization module is activated simultaneously.

[0320] When the food storage drawer 200 is locked, the photodynamic sterilization module is controlled to irradiate the storage space 230. The working wavelength of the photodynamic sterilization module is greater than or equal to 390 nanometers and less than or equal to 420 nanometers. Thus, the photodynamic sterilization module and the ion sterilization module 400 work together to achieve a sterilization effect on the storage space 230 through two different sterilization modules, further reducing the possibility of microbial growth.

[0321] The photodynamic sterilization module includes a circuit board and a light-emitting component. The circuit board is connected to a conductive structure, and the light-emitting component is connected to the circuit board. When the light-emitting component is powered on, it emits blue-violet light. The blue-violet light emitted by the light-emitting component destroys the molecular structure of deoxyribonucleic acid or ribonucleic acid in bacteria and viruses, causing the death of vegetative cells and / or regenerative cells, thus achieving a sterilization and disinfection effect. It is used for sterilization and deodorization of a space containing 230°C.

[0322] In summary, after placing the food into the storage space 230, the fresh food drawer 200 can be switched from a depressurized state to a locked state. The air extraction device 900 is controlled to extract air from the storage space 230 so that the air inside the storage space 230 can be discharged to the outside of the fresh food drawer 200, so that the air pressure in the storage space 230 is lower than or equal to the preset pressure, and the storage space 230 can form a negative pressure state, thereby preserving the food through the storage space 230 in a negative pressure state.

[0323] When the air pressure in the containment space 230 is lower than or equal to the preset pressure, the exhaust device 900 is turned off, and the ion sterilization module 400 is controlled to release sterilizing ions into the containment space 230. This allows the food in the containment space 230 to be sterilized by the sterilizing ions, reducing the possibility of food spoilage. The release time of the sterilizing ions can be set to the first sterilization time, which can be adjusted according to different food ingredients to adapt to the sterilization conditions of different food ingredients.

[0324] When the food storage drawer 200 is locked and the air pressure in the storage space 230 rises from the preset pressure to the first air pressure, the ion sterilization module 400 releases sterilizing ions into the storage space 230. When the food storage drawer 200 is locked, the air pressure in the storage space 230 will increase over time, therefore the suction device 900 needs to repeatedly evacuate the storage space 230 to reduce the air pressure back to below or equal to the preset pressure.

[0325] When the air pressure in the containment space 230 can rise from the preset pressure to the first air pressure, the release time of the bactericidal ions is the second bactericidal time. The second bactericidal time is shorter than the first bactericidal time. Therefore, by setting different first and second bactericidal times, a relatively constant concentration of bactericidal ions can be maintained in the containment space 230, maintaining the bactericidal effect of the bactericidal ions on the food and preventing the possibility of excessively high bactericidal ion concentrations.

[0326] The refrigerator may also include a photodynamic sterilization module. The control module 300 is configured to control the photodynamic sterilization module to irradiate the accommodating space 230 when the crisper drawer 200 is locked. The working wavelength of the photodynamic sterilization module is greater than or equal to 390 nanometers and less than or equal to 420 nanometers.

[0327] For example, the operating wavelength of the photodynamic sterilization module can be set to any wavelength range of 390 nm-400 nm, 400 nm-410 nm, or 410 nm-420 nm.

[0328] When the air extraction device 900 extracts air from the containing space 230, the photodynamic sterilization module is activated simultaneously; and / or, when the ion sterilization module 400 releases sterilizing ions into the containing space 230, the photodynamic sterilization module is activated simultaneously.

[0329] When the food storage drawer 200 is locked, the photodynamic sterilization module is controlled to irradiate the storage space 230. The working wavelength of the photodynamic sterilization module is greater than or equal to 390 nanometers and less than or equal to 420 nanometers. Thus, the photodynamic sterilization module and the ion sterilization module 400 work together to achieve a sterilization effect on the storage space 230 through two different sterilization modules, further reducing the possibility of microbial growth.

[0330] This application provides a refrigerator control method. The refrigerator includes at least two fresh-keeping drawers 200, an air extraction device 900, a control valve 600, and a control module 300. The fresh-keeping drawers 200 are provided with a receiving space 230. When the fresh-keeping drawers 200 are locked, the receiving space 230 is in a closed state. When the fresh-keeping drawers 200 are depressurized, the receiving space 230 is in an open state.

[0331] The vacuum device 900 is connected to the receiving space 230 of at least two food storage drawers 200, and the vacuum device 900 is used to evacuate air from the connected receiving space 230 at least; the control valve 600 has a first interface and two second interfaces, the control valve 600 is connected to the vacuum device 900 through the first interface, and the control valve 600 is connected to the two receiving spaces 230 through the two second interfaces.

[0332] Control methods include:

[0333] When the food storage drawer 200 transitions from the depressurization state to the locked state, the first interface of the control valve 600 is connected to the corresponding second interface, and the air extraction device 900 is controlled to draw air from the accommodating space 230.

[0334] When the food storage drawer 200 is locked, obtain the current air pressure of the two storage spaces 230;

[0335] When the current air pressure in the containment space 230 is higher than the preset pressure, the first interface of the control valve 600 is connected to the corresponding second interface, and the air extraction device 900 is controlled to draw air from the containment space 230.

[0336] When the food storage drawer 200 is locked, the first interface of the control valve 600 is connected to the corresponding second interface, but the first interface of the control valve 600 is not connected to the other second interface.

[0337] Thirdly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a computer, are used to implement the method described in the second aspect.

[0338] The computer-readable storage medium provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here.

[0339] Fourthly, this application provides a computer program product, including a computer program that, when executed by a computer, is used to implement the method described in the second aspect.

[0340] The computer program product provided in this application embodiment can execute the technical solutions in the above method embodiments, and its beneficial effects are similar, so they will not be described again here.

[0341] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0342] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A refrigerator characterized by comprising: The application relates to a refrigerator, comprising: a first fresh-keeping drawer and a second fresh-keeping drawer, which are provided with containing spaces; when the first fresh-keeping drawer and the second fresh-keeping drawer are in a locking state, the containing spaces are in a closed state; when the first fresh-keeping drawer and the second fresh-keeping drawer are in a pressure relief state, the containing spaces are in an open state; an air extraction device, which is communicated with the containing spaces of the first fresh-keeping drawer and the second fresh-keeping drawer, and is used for extracting air from the communicated containing spaces; a control valve, which has a first interface and two second interfaces, is communicated with the air extraction device through the first interface, and is communicated with the containing spaces through the two second interfaces; a control module, if the first fresh-keeping drawer and the second fresh-keeping drawer are in the locking state, the control module is configured to: control the first interface of the control valve to be communicated with the second interface corresponding to the first fresh-keeping drawer, and control the air extraction device to extract air from the containing space of the first fresh-keeping drawer; control the air extraction device to keep in an open state; control the first interface of the control valve to be disconnected from the second interface corresponding to the first fresh-keeping drawer; control the first interface of the control valve to be communicated with the second interface corresponding to the second fresh-keeping drawer, and control the air extraction device to extract air from the containing space of the second fresh-keeping drawer.

2. The refrigerator according to claim 1, characterized in that, The control module is configured to: control the air extraction device to keep in the open state for a time less than or equal to 10 minutes; or, the control module is configured to: control the air extraction device to keep in the open state for a time greater than or equal to 15 minutes and less than or equal to 30 minutes.

3. The refrigerator according to claim 1, characterized in that, The control module is configured to: after the air extraction device is switched from an open state to a closed state, control the air extraction device to be switched from the closed state to the open state after an interval shutdown time; the shutdown time is greater than or equal to 1 hour and less than or equal to 6 hours.

4. The refrigerator according to claim 1, characterized in that, after the air extraction device finishes extracting air from the containing space of the first fresh-keeping drawer, the control module is configured to: control the air extraction device to keep in the open state; control the first interface of the control valve to be disconnected from the second interface corresponding to the first fresh-keeping drawer; control the first interface of the control valve to be communicated with the second interface corresponding to the second fresh-keeping drawer, and control the air extraction device to extract air from the containing space of the second fresh-keeping drawer.

5. The refrigerator according to claim 1, characterized in that, The control module is configured to: obtain air leakage rates of the two containing spaces; determine a communication time of the first interface with the second interface corresponding to the containing space according to the air leakage rate of the containing space.

6. The refrigerator according to claim 5, characterized in that, The control module is configured to obtain the air leakage rates of the two containing spaces by: obtaining an initial air pressure of the containing space after the air extraction device extracts air from the containing space last time; obtaining a current air pressure of the containing space, and obtaining a duration after the air extraction device extracts air from the containing space last time. Determine a leakage rate of the containing space according to the initial air pressure, the current air pressure and the duration.

7. The refrigerator according to claim 5, characterized in that, The control module is configured to: control the air extraction device to keep in an open state; if the leakage rate of the first fresh-keeping drawer is higher than the leakage rate of the second fresh-keeping drawer, control the air extraction time of the air extraction device to the first fresh-keeping drawer to be greater than the air extraction time of the air extraction device to the second fresh-keeping drawer; if the leakage rate of the second fresh-keeping drawer is higher than the leakage rate of the first fresh-keeping drawer, control the air extraction time of the air extraction device to the first fresh-keeping drawer to be less than the air extraction time of the air extraction device to the second fresh-keeping drawer.

8. The refrigerator according to claim 1, characterized in that, if the first fresh-keeping drawer and the second fresh-keeping drawer are switched from the self-pressure relief state to the locking state, the control module is configured to: control the first interface of the control valve to be communicated with the second interface corresponding to the first fresh-keeping drawer, and control the air extraction device to extract air from the containing space of the first fresh-keeping drawer; control the air extraction device to keep in an open state; control the first interface of the control valve to be disconnected from the second interface corresponding to the first fresh-keeping drawer; control the first interface of the control valve to be communicated with the second interface corresponding to the second fresh-keeping drawer, and control the air extraction device to extract air from the containing space of the second fresh-keeping drawer. 9.A control method of a refrigerator, characterized by, The refrigerator comprises: a first fresh-keeping drawer and a second fresh-keeping drawer, the first fresh-keeping drawer and the second fresh-keeping drawer being provided with a containing space; when the first fresh-keeping drawer and the second fresh-keeping drawer are in a locking state, the containing space is in a closed state; when the first fresh-keeping drawer and the second fresh-keeping drawer are in a pressure relief state, the containing space is in an open state; an air extraction device, which is communicated with the containing space of the first fresh-keeping drawer and the second fresh-keeping drawer, and is used at least for extracting air from the communicated containing space; a control valve, which has a first interface and two second interfaces, and is communicated with the air extraction device through the first interface and with the containing space through the two second interfaces; a control module; The control method comprises: controlling the first interface of the control valve to be communicated with the second interface corresponding to the first fresh-keeping drawer, and controlling the air extraction device to extract air from the containing space of the first fresh-keeping drawer; controlling the air extraction device to keep in an open state; controlling the first interface of the control valve to be disconnected from the second interface corresponding to the first fresh-keeping drawer; controlling the first interface of the control valve to be communicated with the second interface corresponding to the second fresh-keeping drawer, and controlling the air extraction device to extract air from the containing space of the second fresh-keeping drawer.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and when the computer execution instructions are executed by a processor, the method in claim 9 is implemented. The computer readable storage medium stores computer execution instructions, and when the computer execution instructions are executed by a processor, the method in claim 9 is implemented.

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