Refrigerator

Abstract

The invention discloses a refrigerator. Relates to the technical field of household appliances. The refrigerator comprises an inner container, a vacuum drawer, a weight detection part, a camera module, a magnetic field device and a control part. The control part is configured to obtain the weight change of the food material in a first preset time period; when the weight change of the food material is greater than a first preset value, obtaining the type, weight and volume of the food material in the accommodating cavity; determining a magnetic field intensity interval of the vacuum drawer according to the type, weight and volume of the food materials; when the weight change of the food material is smaller than or equal to a first preset value, the type of the food material in the containing cavity is obtained, and the weight change of the food material in a second preset time period is obtained; determining the fresh state of the food material according to the weight change of the food material in the second preset time period; according to the fresh state of the food materials, the vacuum degree interval and the magnetic field intensity interval of the vacuum drawer are determined; according to the refrigerator, the refreshing time of the food materials is prolonged, waste of the food materials is reduced, and convenient food material management experience is provided for a user.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of household appliances, and more specifically, to a refrigerator. Background Art

[0002] A refrigerator is a device that delays food spoilage and prolongs its shelf life by controlling factors such as temperature.

[0003] In the related art, a vacuum drawer is provided in a refrigerator. The principle of the vacuum drawer is to slow down food oxidation and microbial growth by reducing oxygen concentration, thereby maintaining the freshness, taste and nutrition of the food.

[0004] However, the vacuum drawer of the existing refrigerator has the problem of poor freshness preservation effect. Summary of the Invention

[0005] The present application provides a refrigerator that can intelligently manage the storage conditions of food, extend the shelf life, reduce food waste, and provide users with a convenient food management experience.

[0006] An embodiment of the present application provides a refrigerator, comprising:

[0007] An inner tank is formed with a storage chamber;

[0008] A vacuum drawer is located in the storage room, and the vacuum drawer has a receiving cavity;

[0009] a weight detection member configured to detect the weight of food in the accommodating cavity;

[0010] A camera module is located in the accommodating cavity;

[0011] a magnetic field device configured to provide a magnetic field in the receiving chamber of the vacuum drawer;

[0012] The control unit, weight detection unit, camera module, and magnetic field device are all electrically connected to the control unit. The control unit is configured as follows:

[0013] Obtaining a weight change of the food within a first preset time period;

[0014] When the weight change of the food is greater than a first preset value, obtaining the type, weight, and volume of the food in the accommodating cavity;

[0015] Determine the magnetic field strength range of the vacuum drawer based on the type, weight, and volume of food;

[0016] When the weight change of the food is less than or equal to the first preset value, obtaining the type of food in the accommodating cavity and obtaining the weight change of the food within a second preset time period;

[0017] determining the freshness of the food according to the weight change of the food during the second preset time period;

[0018] Determine the vacuum degree range and magnetic field strength range of the vacuum drawer according to the freshness of the food.

[0019] The above technical solution has the following advantages or beneficial effects: by monitoring the weight changes of ingredients within the first preset time period and the second preset time period, the type of ingredients is identified using the data from the camera module, and the freshness of the ingredients is evaluated in combination with the weight change data. By monitoring the weight changes of ingredients in real time, the refrigerator can quickly respond to the consumption or deterioration of ingredients and adjust the storage conditions in a timely manner, that is, dynamically adjust the magnetic field strength and vacuum degree to provide the most suitable storage environment according to the type and state of the ingredients. The refrigerator provided in the embodiment of the present application can intelligently manage the storage conditions of ingredients, extend the shelf life, reduce food waste, and provide users with a convenient food management experience.

[0020] In some embodiments of the present application, when the weight change of the food is greater than a first preset value, obtaining the type, weight, and volume of the food in the receiving cavity specifically includes:

[0021] When the weight increase of the food is greater than a first preset value, it is determined that the food is placed;

[0022] When the weight reduction value of the food is greater than a first preset value, it is determined that the food is taken out.

[0023] The above technical solution has the following advantages or beneficial effects: during the use of the refrigerator, the control component continuously monitors the weight change of the food in the vacuum drawer. When the weight detection component detects that the weight increase of the food is greater than the first preset value, the control component can determine that the user has placed the food into the storage cavity. When the weight detection component detects that the weight decrease of the food is greater than the first preset value, the control component can determine that the user has taken out some of the food from the storage cavity. After determining the operation type (placing food or taking out food), the control component obtains the type and weight information of the remaining food in the storage cavity through the camera module. The control component can readjust the magnetic field strength of the vacuum drawer to adapt to the optimal storage conditions of the food.

[0024] In some embodiments of the present application, the magnetic field strength range of the vacuum drawer is determined based on the type, weight, and volume of the food; specifically, the range includes:

[0025] The weight includes at least a first weight, a second weight, and a third weight;

[0026] When the weight of the food is less than the first weight, the magnetic field strength interval of the vacuum drawer is the first magnetic field strength interval;

[0027] When the weight of the food is greater than or equal to the first weight and less than the second weight, the magnetic field strength interval of the vacuum drawer is the second magnetic field strength interval;

[0028] When the weight of the food is greater than or equal to the second weight and less than the third weight, the magnetic field strength interval of the vacuum drawer is the third magnetic field strength interval;

[0029] The weights of the first weight, the second weight, and the third weight increase in sequence. The magnetic field strength intervals of the first magnetic field strength interval, the second magnetic field strength interval, and the third magnetic field strength interval increase in sequence.

[0030] The above technical solution has the following advantages or beneficial effects: As the weight of the ingredients increases, the magnetic field strength needs to be increased to maintain the freshness preservation effect. The weight of the ingredients is divided into three intervals: less than a first weight, between the first and second weights, and between the second and third weights. This classification helps adjust the magnetic field strength according to the different weights of the ingredients. By determining the magnetic field strength interval based on the weight of the ingredients, the control unit can automatically adjust the magnetic field strength interval of the vacuum drawer according to the weight of the ingredients, providing suitable storage conditions for ingredients of different weights. This not only improves the freshness preservation effect but also reduces energy consumption.

[0031] In some embodiments of the present application, when the weight change of the food is greater than a first preset value, the type, weight, and volume of the food in the receiving chamber are obtained; and the magnetic field strength range of the vacuum drawer is determined based on the type, weight, and volume of the food. Specifically, the method includes:

[0032] Obtaining images of ingredients, and determining the number of ingredient types based on the images of the ingredients;

[0033] If the number of food types is one, the magnetic field strength range of the vacuum drawer is determined according to the weight of the food;

[0034] If there are at least two types of food, the magnetic field strength interval of the vacuum drawer is determined to be the intersection of the magnetic field strength intervals of the at least two food items according to the magnetic field strength intervals of the at least two food items.

[0035] The above technical solution has the following advantages or beneficial effects: the refrigerator dynamically adjusts the magnetic field strength according to the actual type and weight of the stored food to provide the best preservation effect. It can not only meet the personalized needs of a single food, but also provide a compatible solution when multiple foods coexist. This flexible design helps to improve the intelligence level of the refrigerator and user experience.

[0036] In some embodiments of the present application, when the weight change of the food is greater than a first preset value, the type, weight, and volume of the food in the receiving chamber are obtained; and the magnetic field strength range of the vacuum drawer is determined based on the type, weight, and volume of the food. Specifically, the method includes:

[0037] Obtaining images of ingredients, and determining the number of ingredient types based on the images of the ingredients;

[0038] If the number of food types is one, the magnetic field strength range of the vacuum drawer is determined according to the weight of the food;

[0039] If the number of food types is at least two, determining the volume ratio of the at least two food types; defining the food type with the largest volume as the target food;

[0040] The total weight of at least two types of food is obtained, and the magnetic field strength range of the vacuum drawer corresponding to the total weight of the target food is determined.

[0041] The above technical solution has the following advantages or beneficial effects: After the control unit determines that there are multiple types of ingredients in the vacuum drawer, it calculates the volume of each type of ingredient and determines the respective volume ratio. The type of ingredient with the largest volume is defined as the target ingredient because its volume may have the greatest impact on the storage environment requirements. The total weight of all types of ingredients in the vacuum drawer is obtained. The magnetic field strength range corresponding to the total weight of the target ingredient is determined. This method ensures that the magnetic field strength setting can meet the needs of the largest ingredients that may have the highest environmental requirements.

[0042] In some embodiments of the present application, the freshness of the food is determined based on the weight change of the food during the second preset time period; specifically, the following steps are performed:

[0043] When the weight reduction value of the food in the second preset time period is less than the first weight reduction value, it is determined that the food is in the first state;

[0044] When the weight reduction value of the food in the second preset time period is greater than or equal to the first weight reduction value and less than the second weight reduction value, it is determined that the food is in the second state;

[0045] When the weight reduction value of the food in the second preset time period is greater than or equal to the second weight reduction value and less than the third weight reduction value, it is determined that the food is in the third state;

[0046] When the weight increase of the food in the second preset time period is less than the first weight increase, it is determined that the food is in the fourth state;

[0047] When the weight increase of the food in the second preset time period is greater than or equal to the first weight increase and less than the second weight increase, it is determined that the food is in the fifth state;

[0048] When the weight increase of the food in the second preset time period is greater than or equal to the second weight increase and less than the third weight increase, it is determined that the food is in the sixth state;

[0049] Among them, the values of the first weight reduction value, the second weight reduction value, and the third weight reduction value increase in sequence; the values of the first weight increase value, the second weight increase value, and the third weight increase value increase in sequence.

[0050] The above technical solution has the following advantages or beneficial effects: When the weight loss value of the food is less than the first weight loss value, the food is in a state of mild dehydration, indicating that its freshness and quality are still good. When the weight loss value is between the first and second weight loss values, the food is in a state of moderate dehydration and requires attention to preservation. When the weight loss value is between the second and third weight loss values, the food is in a state of severe dehydration and may need to be used as soon as possible or preservation measures may be taken.

[0051] During the second preset time period, if the weight increase is less than the first weight increase, the food is slightly damp. If the weight increase is between the first and second weight increase values, the food is moderately damp. If the weight increase is between the second and third weight increase values, the food is severely damp. In this way, by monitoring the weight change of the food in the vacuum drawer, the control unit can automatically determine the freshness of the food.

[0052] In some embodiments of the present application, when the food is in the first state, the vacuum degree interval of the vacuum drawer is determined to be the first vacuum degree interval, and the magnetic field strength interval is determined to be the first magnetic field strength interval;

[0053] When the food is in the second state, the vacuum degree range of the vacuum drawer is determined to be the second vacuum degree range, and the magnetic field strength range is determined to be the second magnetic field strength range;

[0054] When the food is in the third state, the vacuum degree range of the vacuum drawer is determined to be the third vacuum degree range, and the magnetic field strength range is determined to be the fourth magnetic field strength range;

[0055] When the food is in the fourth state, the vacuum degree range of the vacuum drawer is determined to be the second vacuum degree range, and the magnetic field strength range is determined to be the second magnetic field strength range;

[0056] When the food is in the fifth state, the vacuum degree range of the vacuum drawer is determined to be the third vacuum degree range, and the magnetic field strength range is determined to be the third magnetic field strength range;

[0057] When the food is in the sixth state, a prompt is given to the user.

[0058] Among them, the intensity intervals of the first magnetic field intensity interval, the second magnetic field intensity interval, the third magnetic field intensity interval, and the fourth magnetic field intensity interval increase in sequence; the vacuum degree intervals of the second vacuum degree interval, the first vacuum degree interval, and the third vacuum degree interval increase in sequence.

[0059] The above technical solution has the following advantages or beneficial effects: The control unit dynamically adjusts the vacuum level and magnetic field strength based on the freshness of the food, allowing the refrigerator to provide the optimal storage environment for food in different states. This refined control strategy ensures that food in different states is preserved in the optimal environment. By dynamically adjusting storage conditions, the refrigerator can effectively extend the shelf life of food and reduce waste.

[0060] In some embodiments of the present application, determining the vacuum degree range and magnetic field strength range of the vacuum drawer according to the freshness of the food further includes:

[0061] Obtaining images of ingredients, and determining the number of ingredient types based on the images of the ingredients;

[0062] If the number of food types is one, the magnetic field strength range and vacuum degree range of the vacuum drawer are determined according to the weight change of the food;

[0063] If there are at least two types of food, and the magnetic field strength intervals and vacuum degree intervals of at least two types of food overlap, then the magnetic field strength interval and vacuum degree interval of the vacuum drawer are determined based on the overlap.

[0064] If there are at least two types of food, and at least one of the magnetic field strength ranges and vacuum degree ranges of the at least two food ingredients does not overlap, the magnetic field strength range and vacuum degree range of the vacuum drawer are determined based on the volume ratio of the at least two food ingredients.

[0065] The above technical solution has the following advantages or beneficial effects: When multiple ingredients are stored in the refrigerator's vacuum drawer, the controller dynamically adjusts the storage conditions to ensure the freshness of the main ingredients. This strategy provides more precise storage environment adjustment by considering weight changes, volume, and type of ingredients. The magnetic field strength and vacuum level range settings can be further refined according to different types of ingredients.

[0066] In some embodiments of the present application, if there are at least two types of food, and the magnetic field strength intervals and vacuum degree intervals of at least two types of food overlap, determining the magnetic field strength interval and vacuum degree interval of the vacuum drawer based on the overlap specifically includes:

[0067] If there are at least two types of ingredients, the magnetic field strength interval of the vacuum drawer is determined to be the intersection of the magnetic field strength intervals of at least two ingredients and the vacuum degree interval of the vacuum drawer is determined to be the intersection of the vacuum degree intervals of at least two ingredients based on the magnetic field strength intervals and vacuum degree intervals of at least two ingredients in a fresh state.

[0068] The above technical solution has the following advantages or beneficial effects: The refrigerator's vacuum drawer can find the optimal storage conditions (vacuum level range, temperature range) for a variety of ingredients, ensuring the freshness of various ingredients. This strategy considers the storage requirements of different ingredients to provide a balanced storage environment, and the settings of magnetic field strength and vacuum level range can be further refined according to different types of ingredients.

[0069] In some embodiments of the present application, if there are at least two types of food, and at least one of the magnetic field strength ranges and vacuum degree ranges of the at least two types of food does not intersect, then determining the magnetic field strength range and vacuum degree range of the vacuum drawer based on the volume ratio of the at least two types of food specifically includes:

[0070] If the number of food types is at least two, determining the volume ratio of the at least two food types; defining the food type with the largest volume as the target food;

[0071] According to the freshness of the target food, the vacuum degree range and magnetic field strength range of the vacuum drawer are determined to be the vacuum degree range and magnetic field strength range corresponding to the target food, and the user is prompted.

[0072] The above technical solution has the following advantages or beneficial effects: When multiple ingredients are present, the refrigerator prioritizes the storage needs of the largest ingredients. This strategy, by considering both volume and freshness, provides a reasonable storage environment adjustment solution. This method can further refine volume calculations and storage condition settings based on different types of ingredients. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0074] Figure 1 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;

[0075] Figure 2 Schematic diagram of the structure of the inner tank and vacuum drawer of the refrigerator provided in the embodiment of the present application Figure 1 ;

[0076] Figure 3 Schematic diagram of the structure of the inner tank and vacuum drawer of the refrigerator provided in the embodiment of the present application Figure 2 ;

[0077] Figure 4 Schematic diagram of the structure of the vacuum drawer of the refrigerator provided in the embodiment of the present application Figure 1 ;

[0078] Figure 5 Schematic diagram of the structure of the vacuum drawer of the refrigerator provided in the embodiment of the present application Figure 2 ;

[0079] Figure 6 This is a schematic diagram of the electrical connections of the refrigerator provided in an embodiment of the present application;

[0080] Figure 7 Schematic diagram of the refrigerator control method provided in the embodiment of the present application Figure 1 ;

[0081] Figure 8 Schematic diagram of the refrigerator control method provided in the embodiment of the present application Figure 2 ;

[0082] Figure 9 Schematic diagram of the refrigerator control method provided in the embodiment of the present application Figure 3 ;

[0083] Figure 10 Schematic diagram of the refrigerator control method provided in the embodiment of the present application Figure 4 .

[0084] Description of reference numerals:

[0085] 100: Refrigerator;

[0086] 200: liner;

[0087] 300: Vacuum drawer;

[0088] 400: weight detection parts;

[0089] 500: camera module;

[0090] 600: magnetic field device;

[0091] 700: Control parts. DETAILED DESCRIPTION

[0092] In the related art, the freshness of food stored in the vacuum drawer of the refrigerator will change over time. For example, microorganisms such as bacteria, molds and yeasts present in food will multiply over time, causing the food to deteriorate. The low temperature of the refrigerator can slow down the growth rate of microorganisms, but cannot completely prevent their activity. The enzymes in food will catalyze various chemical reactions, such as oxidation and decomposition, causing the texture, color and taste of the food to change. For example, fruits and vegetables may become soft or discolored due to enzymatic reactions during storage. Food may lose moisture during storage, causing its texture to become dry and hard. Moisture loss not only affects the taste of the food, but may also accelerate the deterioration process.

[0093] However, at present, the vacuum drawer of the refrigerator preserves food by maintaining a constant temperature and humidity. At present, the vacuum drawer of the refrigerator cannot provide targeted preservation according to changes in the freshness of the food, and cannot dynamically adjust the storage conditions based on the freshness of the food monitored in real time.

[0094] Therefore, the vacuum drawer of the existing refrigerator has the problem of poor preservation effect.

[0095] In view of this, an embodiment of the present application provides a refrigerator comprising an inner container, a vacuum drawer, a weight detector, a camera module, a magnetic field device, and a control unit. The inner container forms a storage chamber; the vacuum drawer is located within the storage chamber and has a storage cavity; the weight detector is configured to detect the weight of food in the storage cavity; the camera module is located within the storage cavity; the magnetic field device is configured to impart a magnetic field to the storage cavity of the vacuum drawer; and the weight detector, camera module, and magnetic field device are all electrically connected to the control unit. The control unit is configured to: obtain a weight change of food within a first preset time period; when the weight change of the food is greater than a first preset value, obtain the type, weight, and volume of the food within the storage cavity; determine a magnetic field strength range for the vacuum drawer based on the type, weight, and volume of the food; when the weight change of the food is less than or equal to the first preset value, obtain the type of food within the storage cavity and obtain the weight change of the food within a second preset time period; determine the freshness of the food based on the weight change of the food within the second preset time period; and determine a vacuum degree range and a magnetic field strength range for the vacuum drawer based on the freshness of the food.

[0096] The refrigerator provided in the embodiment of the present application monitors the weight changes of ingredients within a first preset time period and a second preset time period, identifies the type of ingredients using data from the camera module, and evaluates the freshness of the ingredients in combination with the weight change data. By monitoring the weight changes of ingredients in real time, the refrigerator can quickly respond to the consumption or deterioration of ingredients and adjust the storage conditions in a timely manner, that is, dynamically adjust the magnetic field strength and vacuum degree to provide the most suitable storage environment according to the type and state of the ingredients. The refrigerator provided in the embodiment of the present application can intelligently manage the storage conditions of ingredients, extend the shelf life, reduce food waste, and provide users with a convenient food management experience.

[0097] In order to make the purpose and implementation of this application clearer, the exemplary implementation of this application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only part of the embodiments of this application, not all of the embodiments.

[0098] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0099] In the specification and claims of this application and the accompanying drawings, the terms "first," "second," "third," etc. are used to distinguish similar or similar objects or entities, and are not necessarily intended to limit a particular order or sequence, unless otherwise noted. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances.

[0100] The terms "comprise," "include," and "have," and any variations thereof, are intended to cover but not exclude inclusion; for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0101] Reference Figures 1 to 7 As shown, the embodiment of the present application provides a refrigerator 100, comprising:

[0102] The inner tank 200 is formed with a storage chamber;

[0103] A vacuum drawer 300 is located in the storage room and has a receiving cavity;

[0104] The weight detection member 400 is configured to detect the weight of the food in the receiving cavity;

[0105] The camera module 500 is located in the accommodating cavity;

[0106] The magnetic field device 600 is configured to provide a magnetic field in the receiving cavity of the vacuum drawer 300;

[0107] The control unit 700, the weight detection unit 400, the camera module 500, and the magnetic field device 600 are all electrically connected to the control unit 700. The control unit 700 is configured as follows:

[0108] S100: Obtaining weight changes of food materials within a first preset time period;

[0109] S200: When the weight change of the food is greater than a first preset value, obtaining the type, weight, and volume of the food in the receiving cavity;

[0110] S300: Determine the magnetic field strength range of the vacuum drawer based on the type, weight, and volume of the food;

[0111] S400: When the weight change of the food is less than or equal to the first preset value, obtaining the type of food in the accommodating cavity and obtaining the weight change of the food in a second preset time period;

[0112] S500: Determining the freshness of the food according to the weight change of the food in the second preset time period;

[0113] S600: Determine the vacuum degree range and magnetic field strength range of the vacuum drawer according to the freshness of the food.

[0114] For example, the storage chamber of the inner container 200 of the refrigerator 100 is used to store various food ingredients. The vacuum drawer 300 provides a sealed receiving chamber for storing food ingredients that require special storage conditions.

[0115] The weight detection member 400 is used to detect in real time the weight change of the food in the receiving chamber of the vacuum drawer 300. The weight detection member 400 can monitor the consumption of the food. The weight detection member 400 can be a weight sensor.

[0116] The camera module 500 can capture images of food to help identify the type and quantity of food. The camera module 500 can be a video camera or a still camera.

[0117] The magnetic field device 600 generates a magnetic field in the storage chamber of the vacuum drawer 300. The magnetic field affects the storage environment of the food and may be used to extend the shelf life of certain food. The magnetic field device 600 can be an electromagnetic device. The magnetic field device 600 includes an electromagnetic coil or a permanent magnet.

[0118] The control unit 700 is the core of the refrigerator 100. The control unit 700 is electrically connected to the weight detection unit 400, the camera module 500, and the magnetic field device 600, and is responsible for coordinating and processing the data and operations of each component. The control unit 700 can be a controller.

[0119] For example, in terms of food preservation, the magnetic field delays food spoilage by affecting microbial metabolism, enzyme activity and the hydrogen bond structure of water molecules.

[0120] Magnetic fields have antibacterial effects, manifesting in their interference with microbial cell membrane potential and electron transport. Magnetic fields also inhibit enzyme activity; for example, polyphenol oxidase activity decreases under certain magnetic field intensities. Magnetic fields can also break down water molecule clusters, breaking down large water clusters and enhancing permeability. At low magnetic field intensities, magnetic fields can temporarily slow the respiration of fruits and vegetables. At high magnetic field intensities, magnetic fields can inhibit bacteria and fungi.

[0121] For example, in terms of food preservation, the appropriate vacuum degree of the vacuum drawer 300 can slow down the oxidation reaction and increase the food preservation time. By adjusting the vacuum degree, the vacuum drawer 300 is in an oxygen-deficient environment, which can inhibit aerobic microorganisms and slow down the oxidation reaction.

[0122] For example, monitoring the slow changes in the weight of ingredients can indirectly assess the extent of internal changes in these ingredients, thereby determining the freshness of the ingredients.

[0123] Fresh ingredients typically contain a high amount of water. Over time, this water evaporates from the ingredients, causing a slow decrease in weight. This loss of water is often accompanied by changes in the texture and taste of the ingredients, and is a sign of a decrease in freshness.

[0124] Some ingredients release gases during storage (such as fruit releases ethylene), which may cause small changes in weight.

[0125] Microbial growth and metabolic activity can cause decomposition reactions within food, leading to changes in weight. As microbial activity increases, the freshness of food decreases.

[0126] Chemical reactions in ingredients, such as oxidation, can cause changes in composition, which can affect weight. Reactions such as oxidation often reduce the freshness and nutritional value of ingredients.

[0127] Food ingredients may undergo physical changes during storage, such as shrinkage or deformation, which are usually accompanied by a slow loss of weight.

[0128] In some embodiments, the control unit 700 acquires data from the weight detection unit 400, which detects the weight of the food in the vacuum drawer 300. The control unit 700 then determines the weight change of the vacuum drawer 300 within a first preset time period. If the weight change exceeds the first preset value, it can be determined that food has been removed from the vacuum drawer 300. The control unit 700 then controls the camera module 500 to acquire the type, weight, and volume of the food in the holding chamber, and determines the magnetic field strength range of the vacuum drawer 300 based on the type and weight of the food.

[0129] In other embodiments, the control unit 700 obtains data from the weight detection unit 400, which detects the weight of the food in the vacuum drawer 300. The control unit 700 then determines the weight change of the food in the vacuum drawer 300 within a first preset time period and makes a judgment. If the weight change is less than or equal to the first preset value, it can be determined that the food in the vacuum drawer 300 has not been removed or placed. Subsequently, the control unit 700 obtains data from the weight detection unit 400 again and determines the weight change of the food in the vacuum drawer 300 within a second preset time period. Because the slow change in food weight can reflect the freshness of the food, the control unit 700 determines the freshness of the food based on the weight change of the food in the vacuum drawer 300 within the second preset time period and determines the vacuum level and magnetic field strength of the vacuum drawer 300.

[0130] The first preset time period may be in the range of 0-5 minutes, the second preset time period may be in the range of 5 minutes-24 hours, and the first preset value is 2% of the weight at the initial moment of the first preset time period.

[0131] The refrigerator 100 provided in the embodiment of the present application monitors the weight change of the food ingredients within the first preset time period and the second preset time period, identifies the type of food ingredients using the data from the camera module 500, and evaluates the freshness of the food ingredients in combination with the weight change data. By monitoring the weight change of the food ingredients in real time, the refrigerator 100 can quickly respond to the consumption or deterioration of the food ingredients and adjust the storage conditions in a timely manner, that is, dynamically adjust the magnetic field strength and vacuum degree to provide the most suitable storage environment according to the type and state of the food ingredients. The refrigerator 100 provided in the embodiment of the present application can intelligently manage the storage conditions of the food ingredients, extend the shelf life, reduce food waste, and provide users with a convenient food management experience.

[0132] As a feasible implementation method, when the weight change of the food is greater than a first preset value, the type, weight, and volume of the food in the accommodating cavity are obtained; specifically, the method includes:

[0133] S201: When the weight increase of the food is greater than a first preset value, it is determined that the food is placed;

[0134] S202: When the weight reduction value of the food is greater than a first preset value, it is determined that the food is taken out.

[0135] For example, during use of the refrigerator 100, the control unit 700 continuously monitors the weight change of the food in the vacuum drawer 300. When the weight detection unit 400 detects that the weight increase of the food is greater than a first preset value, the control unit 700 can determine that the user has placed food in the accommodating cavity.

[0136] When the weight detection component 400 detects that the weight reduction value of the food is greater than the first preset value, the control component 700 can determine that the user has taken out some of the food from the accommodating cavity.

[0137] After determining the operation type (placing food or removing food), the controller 700 obtains the type and weight of the remaining food in the storage chamber through the camera module 500. The controller 700 can readjust the magnetic field strength of the vacuum drawer 300 to adapt to the optimal storage conditions for the food.

[0138] As a feasible implementation method, the magnetic field strength range of the vacuum drawer 300 is determined according to the type, weight, and volume of the food; specifically, the range includes:

[0139] The weight includes at least a first weight, a second weight, and a third weight;

[0140] S301: When the weight of the food is less than the first weight, the magnetic field strength interval of the vacuum drawer is the first magnetic field strength interval;

[0141] S302: When the weight of the food is greater than or equal to the first weight and less than the second weight, the magnetic field strength interval of the vacuum drawer is the second magnetic field strength interval;

[0142] S303: When the weight of the food is greater than or equal to the second weight and less than the third weight, the magnetic field strength interval of the vacuum drawer is the third magnetic field strength interval;

[0143] The weights of the first weight, the second weight, and the third weight increase in sequence. The magnetic field strength intervals of the first magnetic field strength interval, the second magnetic field strength interval, and the third magnetic field strength interval increase in sequence.

[0144] For example, when the weight of the food increases, the magnetic field strength needs to be increased in order to maintain the preservation effect. This is because the magnetic field will exponentially decay when penetrating the food due to the electrical conductivity (water, ions) and magnetic permeability (fat, protein) of the medium. The larger the mass of the food, the higher the magnetic field strength is required to ensure that the effective antibacterial threshold is reached inside. Large-mass food has a higher heat capacity, and the magnetocaloric effect (eddy current heat generation) generated by the magnetic field is easily dispersed, so the field strength needs to be increased to maintain local temperature stability (such as inhibiting freezing damage). Microorganisms in large-mass food are more widely distributed, and higher field strength is required to ensure full coverage.

[0145] By adjusting the magnetic field strength according to weight, unnecessary energy consumption can be avoided. For example, lighter ingredients may not require a strong magnetic field to maintain freshness, so a lower magnetic field strength can be used to save energy.

[0146] The weight of the ingredients is divided into three intervals: less than the first weight, between the first and second weights, and between the second and third weights. This classification helps adjust the magnetic field strength according to the different weights of the ingredients.

[0147] When the weight of the food is less than the first weight, the controller 700 sets the magnetic field strength of the vacuum drawer 300 to the first magnetic field strength range. The first magnetic field strength range is suitable for lighter food, which requires a lower magnetic field strength to maintain its freshness.

[0148] When the weight of the food is greater than or equal to the first weight and less than the second weight, the controller 700 adjusts the magnetic field strength to a second magnetic field strength range. The second magnetic field strength range is suitable for food of medium weight and provides a moderate magnetic field strength to optimize the preservation effect.

[0149] When the weight of the food is greater than or equal to the second weight and less than the third weight, the controller 700 sets the magnetic field strength to the third magnetic field strength range. Heavier food requires a higher magnetic field strength to maintain its storage environment.

[0150] By determining the magnetic field strength range based on the weight of the food, the controller 700 can automatically adjust the magnetic field strength range of the vacuum drawer 300 according to the weight of the food, providing suitable storage conditions for food of different weights. This not only improves the preservation effect but also reduces energy consumption.

[0151] The first weight range is 0-2 kg, the second weight range is 2-4 kg, and the third weight range is 4-6 kg.

[0152] In some embodiments, the types of food include fresh produce, fruits and vegetables, and delicacies. For example, fresh produce includes pork, beef, and seafood, fruits and vegetables include potatoes, spinach, apples, and delicacies include nuts.

[0153] For fresh food, the first magnetic field strength range is 0.1-1mT, the second magnetic field strength range is 1-2mT, and the third magnetic field strength range is 2-4mT. For fruit and vegetable food, the first magnetic field strength range is 0.1-1.5mT, the second magnetic field strength range is 1.5-3mT, and the third magnetic field strength range is 3-5mT. For rare food, the first magnetic field strength range is 0.1-1mT, the second magnetic field strength range is 1-3mT, and the third magnetic field strength range is 3-5mT.

[0154] As a feasible implementation method, refer to Figure 8 As shown, when the weight change of the food is greater than the first preset value, the type, weight, and volume of the food in the accommodating cavity are obtained; and the magnetic field strength range of the vacuum drawer 300 is determined according to the type, weight, and volume of the food. Specifically, the steps include:

[0155] S211: Acquire an image of the food, and determine the number of food types based on the image of the food;

[0156] S212: If the number of food types is one, determining the magnetic field strength range of the vacuum drawer according to the weight of the food;

[0157] S213: If the number of food types is at least two, determine, based on the magnetic field strength intervals of the at least two food types, that the magnetic field strength interval of the vacuum drawer is the intersection of the magnetic field strength intervals of the at least two food types.

[0158] In some embodiments, after the control unit 700 determines that only one type of food is in the vacuum drawer 300, it determines an appropriate magnetic field strength range based on the weight of the food. For example, the corresponding magnetic field strength range (e.g., the first magnetic field strength range, the second magnetic field strength range, and the third magnetic field strength range) is selected based on the weight of the food (e.g., the first weight, the second weight, and the third weight).

[0159] In other embodiments, when the control unit 700 determines that multiple types of food are present in the vacuum drawer 300, it needs to comprehensively consider the magnetic field strength requirements of each food. Based on the magnetic field strength ranges for each food, the intersection of these magnetic field strength ranges is calculated and used as the magnetic field strength setting for the vacuum drawer 300. This intersection calculation ensures that multiple types of food can be well preserved under an appropriate magnetic field strength.

[0160] In this way, the refrigerator 100 dynamically adjusts the magnetic field strength according to the type and weight of the actual stored food to provide the best preservation effect. It can not only meet the personalized needs of a single food, but also provide compatible solutions when multiple foods coexist. This flexible design helps to improve the intelligence level of the refrigerator 100 and the user experience.

[0161] As a feasible implementation method, refer to Figure 9 As shown, when the weight change of the food is greater than the first preset value, the type, weight, and volume of the food in the accommodating cavity are obtained; and the magnetic field strength range of the vacuum drawer 300 is determined according to the type, weight, and volume of the food. Specifically, the steps include:

[0162] S214: Acquire images of ingredients, and determine the number of ingredient types based on the images of the ingredients;

[0163] S215: If the number of food types is one, determining the magnetic field strength range of the vacuum drawer according to the weight of the food;

[0164] S216: If the number of food types is at least two, determine the volume ratio of the at least two food types; define the food type with the largest volume as the target food;

[0165] S217: Obtain the total weight of at least two types of food, and determine the magnetic field strength range of the vacuum drawer corresponding to the total weight of the target food.

[0166] In some embodiments, after the control unit 700 determines that only one type of food is in the vacuum drawer 300, it determines an appropriate magnetic field strength range based on the weight of the food. For example, the corresponding magnetic field strength range (e.g., the first magnetic field strength range, the second magnetic field strength range, and the third magnetic field strength range) is selected based on the weight of the food (e.g., the first weight, the second weight, and the third weight).

[0167] In other embodiments, after the control unit 700 determines that there are multiple types of food in the vacuum drawer 300, it calculates the volume of each type of food and determines the volume ratio of each type. The type of food with the largest volume is defined as the target food because its volume may have the greatest impact on the storage environment requirements. The total weight of all food types in the vacuum drawer 300 is obtained. The magnetic field strength range corresponding to the total weight of the target food is determined. This method ensures that the magnetic field strength setting can meet the needs of the food with the largest volume and the most environmental requirements.

[0168] As a feasible implementation method, the freshness of the food is determined based on the weight change of the food in the second preset time period; specifically, the method includes:

[0169] S501: When the weight reduction value of the food in the second preset time period is less than the first weight reduction value, determining that the food is in the first state;

[0170] S502: When the weight reduction value of the food in the second preset time period is greater than or equal to the first weight reduction value and less than the second weight reduction value, determining that the food is in the second state;

[0171] S503: When the weight reduction value of the food in the second preset time period is greater than or equal to the second weight reduction value and less than the third weight reduction value, determining that the food is in the third state;

[0172] S504: When the weight increase of the food in the second preset time period is less than the first weight increase, determining that the food is in the fourth state;

[0173] S505: When the weight increase of the food in the second preset time period is greater than or equal to the first weight increase and less than the second weight increase, determining that the food is in the fifth state;

[0174] S506: When the weight increase of the food in the second preset time period is greater than or equal to the second weight increase and less than the third weight increase, determining that the food is in the sixth state;

[0175] Among them, the values of the first weight reduction value, the second weight reduction value, and the third weight reduction value increase in sequence; the values of the first weight increase value, the second weight increase value, and the third weight increase value increase in sequence.

[0176] For example, the first weight reduction value ranges from 0-0.5% of the weight at the beginning of the second preset time period. The second weight reduction value ranges from 0.5-1.0% of the weight at the beginning of the second preset time period. The third weight reduction value ranges from 1.0-2.0% of the weight at the beginning of the second preset time period.

[0177] The first weight increase value ranges from 0-0.5% of the weight at the beginning of the second preset time period. The second weight increase value ranges from 0.5-1.0% of the weight at the beginning of the second preset time period. The third weight increase value ranges from 1.0-2.0% of the weight at the beginning of the second preset time period.

[0178] When the weight reduction value of the food is less than the first weight reduction value, the control unit 700 determines that the food is in the first state. The first state means that the weight change of the food is small and the food is in a state of slight dehydration, which means that the food still maintains good freshness and quality.

[0179] When the weight loss value of the food is greater than or equal to the first weight loss value and less than the second weight loss value, the controller 700 determines that the food is in the second state. The second state indicates that the food has begun to lose a certain amount of water or other changes, and is in a moderate dehydration state, requiring attention to its freshness.

[0180] When the weight loss value of the food is greater than or equal to the second weight loss value and less than the third weight loss value, the controller 700 determines that the food is in the third state. The third state indicates that the food has lost a lot of water or rotted, indicating that the freshness of the food has significantly decreased and it may be necessary to use it as soon as possible or take further preservation measures.

[0181] When the weight increase of the food in the second preset time period is less than the first weight increase, it is determined that the food is in the fourth state; this indicates that the food begins to slightly absorb moisture and attention needs to be paid to its freshness preservation.

[0182] When the weight increase of the food in the second preset time period is greater than or equal to the first weight increase and less than the second weight increase, it is determined that the food is in the fifth state; this indicates that the food begins to become moderately damp.

[0183] When the weight increase of the food in the second preset time period is greater than or equal to the second weight increase and less than the third weight increase, it is determined that the food is in the sixth state; this indicates that the food begins to become severely damp.

[0184] In this way, the controller 700 can determine the freshness of the food according to the degree of weight increase or decrease of the vacuum drawer 300 .

[0185] As a feasible implementation, S511: when the food is in the first state, determining that the vacuum degree range of the vacuum drawer is the first vacuum degree range, and the magnetic field strength range is the first magnetic field strength range;

[0186] S512: When the food is in the second state, determining that the vacuum degree range of the vacuum drawer is the second vacuum degree range, and the magnetic field strength range is the second magnetic field strength range;

[0187] S513: When the food is in the third state, determining that the vacuum degree range of the vacuum drawer is the third vacuum degree range, and the magnetic field strength range is the fourth magnetic field strength range;

[0188] S514: When the food is in the fourth state, determining that the vacuum degree range of the vacuum drawer is the second vacuum degree range, and the magnetic field strength range is the second magnetic field strength range;

[0189] S515: When the food is in the fifth state, determining that the vacuum degree range of the vacuum drawer is the third vacuum degree range, and the magnetic field strength range is the third magnetic field strength range;

[0190] S516: When the food is in the sixth state, prompt the user;

[0191] Among them, the intensity intervals of the first magnetic field intensity interval, the second magnetic field intensity interval, the third magnetic field intensity interval, and the fourth magnetic field intensity interval increase in sequence; the vacuum degree intervals of the second vacuum degree interval, the first vacuum degree interval, and the third vacuum degree interval increase in sequence.

[0192] Exemplarily, the fourth magnetic field strength interval is 10-20mT. Within the fourth magnetic field strength interval, the magnetic field changes the physical properties of the bacterial cell membrane, such as fluidity and permeability. Such changes may lead to damage or dysfunction of the cell membrane, thereby affecting the viability of the bacteria. The magnetic field may promote the generation of free radicals. Free radicals are highly reactive molecules that can attack the DNA, proteins and lipids of bacteria, causing damage and death of bacterial cells. The magnetic field affects the activity of enzymes in bacteria. Enzymes are important molecules that catalyze biochemical reactions. The magnetic field may inhibit the metabolic activity of bacteria by changing the conformation of the enzyme or the state of the active center. The magnetic field affects the charge distribution and current flow of bacteria through the electromagnetic induction effect. This effect may interfere with the normal physiological functions of bacteria, resulting in their restricted growth and reproduction. The magnetic field affects the gene expression of bacteria, leading to the upregulation or downregulation of certain key genes, thereby inhibiting the growth and reproduction of bacteria.

[0193] For fresh food ingredients, the first vacuum degree range is 0.6-0.7atm, the second vacuum degree range is 0.7-0.8atm, and the third vacuum degree range is <0.6atm; for fruit and vegetable ingredients, the first vacuum degree range is 0.7-0.8atm, the second vacuum degree range is 0.8-0.9atm, and the third vacuum degree range is <0.7atm; for precious food ingredients, the first vacuum degree range is 0.65-0.75atm, the second vacuum degree range is 0.75-0.85atm, and the third vacuum degree range is <0.65atm.

[0194] According to the state of the food, the control unit 700 adjusts the vacuum degree and magnetic field strength of the vacuum drawer 300 to provide a suitable storage environment.

[0195] When the food is in the first freshness state, the control unit 700 determines that the vacuum degree range is the first vacuum degree range and the magnetic field strength range is the first magnetic field strength range. This situation is suitable for situations where the weight loss value is small, generally indicating that the food is still relatively fresh. Moderate vacuum and magnetic field strengths are sufficient. Within this vacuum degree range, excessive moisture in the air can be prevented from being extracted.

[0196] When the food is in the second freshness state, the control unit 700 determines the vacuum degree range to be the second vacuum degree range and the magnetic field strength range to be the second magnetic field strength range. This situation is suitable for situations where the weight loss value is moderate and slightly stronger vacuum and magnetic field strength are needed to delay spoilage. Within this vacuum degree range, excessive extraction of moisture from the air can be further prevented.

[0197] When the food's freshness reaches the third state, the controller 700 determines the vacuum level to be within the third vacuum level range and the magnetic field strength to be within the fourth magnetic field strength range. This situation applies when the weight loss is significant, typically indicating a significant decrease in food freshness and requiring a stronger vacuum level and magnetic field strength. Within this vacuum level and magnetic field strength range, the magnetic field has a sterilizing effect, and a higher vacuum level can suppress severe water loss.

[0198] When the food is in the fourth freshness state, the controller 700 determines the vacuum range to be the second vacuum range and the magnetic field strength range to be the second magnetic field strength range. This is suitable for situations where the weight increase is small, which may indicate that the food is slightly damp. In this vacuum range, the oxygen concentration is reduced and the movement of water molecules is suppressed.

[0199] When the food is in the fifth freshness state, the controller 700 determines the vacuum level to be within the third vacuum level range and the magnetic field strength to be within the third magnetic field strength range. This situation applies to situations where the weight gain is moderate, indicating that the food has moderately regained moisture and requires a stronger vacuum level and magnetic field strength to meet the new storage requirements. Within this vacuum level range, excess moisture can be extracted.

[0200] When the freshness of the food is in the sixth state, the control unit 700 prompts the user. This situation is applicable to the case where the weight increase value is large, indicating that the food is seriously damp and requires user confirmation or action.

[0201] In this way, through a refined control strategy, it is ensured that food in different states can be stored in the optimal environment. By dynamically adjusting storage conditions, the refrigerator 100 can effectively extend the shelf life of food and reduce waste.

[0202] In some embodiments, for example, if the food does not experience a weight gain or loss of >2% within 0-5 minutes, the next step is entered. Specifically, if the weight increases by 0%-0.5% within 5 minutes to 24 hours, it is considered mild moisture reversion, and the vacuum level is adjusted to the second vacuum level range to extract excess gas, and the magnetic field strength is adjusted to the second magnetic field strength range to further reduce oxygen concentration and inhibit water molecule movement. Specifically, if the weight increases by 0.5%-1% within 5 minutes to 24 hours, it is considered moderate moisture reversion, and the vacuum level is adjusted to the third vacuum level range to extract excess gas, and the magnetic field strength is adjusted to the third magnetic field strength range.

[0203] If the weight decreases by 0%-0.5% within 5 minutes and 24 hours, it is judged as slight water loss, and the vacuum degree interval is adjusted to the first vacuum degree interval to prevent excessive moisture in the air from being extracted, and the magnetic field strength interval is adjusted to the first magnetic field strength interval; if the weight decreases by 0.5%-1% within 5 minutes and 24 hours, it is judged as moderate water loss, and the vacuum degree interval is adjusted to the second vacuum degree interval to further prevent excessive moisture in the air from being extracted, and the magnetic field strength interval is adjusted to the second magnetic field strength interval; if the weight decreases by 1%-2% within 5 minutes and 24 hours, it is judged as severe water loss or rot and deterioration, and the vacuum degree interval is adjusted to the third vacuum degree interval, and the magnetic field strength interval is adjusted to the fourth magnetic field strength interval, and the magnetic field sterilization effect is activated to inhibit severe water loss.

[0204] As a feasible implementation, determining the vacuum degree range and magnetic field strength range of the vacuum drawer 300 according to the freshness of the food also includes:

[0205] S601: Acquire an image of the food, and determine the number of food types based on the image of the food;

[0206] S602: If the number of food types is one, determining the magnetic field strength range and vacuum degree range of the vacuum drawer according to the weight change of the food;

[0207] S603: If there are at least two types of food, and the magnetic field strength intervals and vacuum degree intervals of the at least two types of food overlap, determining the magnetic field strength interval and vacuum degree interval of the vacuum drawer based on the overlap;

[0208] S604: If there are at least two types of food ingredients, and at least one of the magnetic field strength ranges and vacuum degree ranges of the at least two food ingredients does not overlap, determine the magnetic field strength range and vacuum degree range of the vacuum drawer according to the volume ratio of the at least two food ingredients.

[0209] In some embodiments, if the camera module 500 identifies only one type of food in the storage chamber, the controller 700 determines the appropriate magnetic field strength and vacuum range for the vacuum drawer 300 based on the weight variation of the food. For example, the corresponding storage conditions may be selected based on the freshness state (e.g., first state, second state, or third state).

[0210] In other embodiments, if the camera module 500 identifies at least two different types of food within the storage chamber, and the magnetic field strength and vacuum degree ranges of at least two of the food items intersect, the magnetic field strength and vacuum degree ranges of the vacuum drawer 300 are determined to be those intersections. This approach ensures that a variety of food items can be stored in a suitable environment and maintained fresh.

[0211] In yet other embodiments, if the camera module 500 identifies at least two different ingredients within the storage chamber, and at least one of the magnetic field strength ranges and vacuum level ranges for the at least two ingredients do not overlap, the magnetic field strength range and vacuum level range for the vacuum drawer 300 are determined based on the volume percentage of each ingredient. Ingredients with a larger volume percentage may have a greater impact on storage environment requirements, and therefore their needs may be prioritized.

[0212] This method allows the control unit 700 to dynamically adjust storage conditions in the vacuum drawer 300 of refrigerator 100 when multiple ingredients are present, ensuring the freshness of the primary ingredients. This strategy provides more precise storage environment adjustments by considering weight changes, volume, and type of food, allowing for further refinement of magnetic field strength and vacuum range settings based on different types of ingredients.

[0213] As a feasible implementation, if there are at least two types of food, and the magnetic field strength ranges and vacuum degree ranges of at least two types of food overlap, then determining the magnetic field strength range and vacuum degree range of the vacuum drawer 300 based on the overlap may include:

[0214] If there are at least two types of food, the magnetic field strength range and vacuum degree range of the at least two foods in a fresh state are used to determine that the magnetic field strength range of the vacuum drawer 300 is the intersection of the magnetic field strength ranges of the at least two foods, and the vacuum degree range of the vacuum drawer 300 is the intersection of the vacuum degree ranges of the at least two foods.

[0215] For example, if the identification result shows that there are at least two different ingredients in the storage chamber, the magnetic field strength range of each ingredient in its fresh state is obtained. The intersection of these magnetic field strength ranges is calculated. The intersection result is used as the magnetic field strength range of the vacuum drawer 300. In this way, it is ensured that multiple types of ingredients are well preserved under an appropriate magnetic field strength. The vacuum degree range of each ingredient in its fresh state is obtained. The intersection of these vacuum degree ranges is calculated. The intersection result is used as the vacuum degree range of the vacuum drawer 300. In this way, it is ensured that multiple types of ingredients are well preserved under an appropriate vacuum degree.

[0216] Among them, when there are multiple types of food in the vacuum drawer 300, the control unit 700 can obtain the number of food types, but the weight change value of each food cannot be obtained separately. Here, the food in the vacuum drawer 300 has a total weight change value. For example, when there are two types of food in the vacuum drawer 300, the two types of food have a total weight change value, that is, the sum of the weight change values. The control unit 700 obtains the corresponding fresh state and magnetic field intensity range of one type of food under this total weight change value, and the corresponding fresh state and magnetic field intensity range of another type of food under this total weight change value. The intersection of these two magnetic field intensity intervals is calculated as the magnetic field intensity setting of the vacuum drawer 300. Similarly, the intersection of the vacuum degree intervals is also obtained by this method.

[0217] In this way, the vacuum drawer 300 of the refrigerator 100 can find the appropriate storage conditions (vacuum level range, temperature range) when multiple ingredients coexist, ensuring the preservation of multiple types of ingredients. This strategy provides a balanced storage environment by considering the storage requirements of different ingredients, and the settings of magnetic field strength and vacuum level range can be further refined according to different types of ingredients.

[0218] As a feasible implementation method, refer to Figure 10 As shown, if there are at least two types of food, and at least one of the magnetic field strength ranges and vacuum degree ranges of the at least two types of food does not overlap, then the magnetic field strength range and vacuum degree range of the vacuum drawer 300 are determined based on the volume ratios of the at least two types of food, specifically including:

[0219] S611: If the number of food types is at least two, determine the volume ratio of the at least two food types; define the food type with the largest volume as the target food;

[0220] S612: According to the freshness of the target food, the vacuum degree range and the magnetic field strength range of the vacuum drawer are determined to be the vacuum degree range and the magnetic field strength range corresponding to the target food, and a prompt is given to the user.

[0221] For example, if the identification results indicate the presence of at least two different ingredients in the storage chamber, and if at least one of the magnetic field intensity ranges or vacuum degree ranges for the at least two ingredients does not intersect, the volume of each ingredient is calculated and their volume ratio is determined. The ingredient with the largest volume is defined as the target ingredient, as its volume is likely to have the greatest impact on the storage environment requirements.

[0222] The vacuum drawer 300's vacuum level and magnetic field strength ranges are determined based on the freshness of the target ingredients. Storage conditions are set using the corresponding vacuum level and magnetic field strength ranges for the target ingredients. This ensures that the main ingredients are well preserved in a suitable environment.

[0223] When multiple ingredients are present in the vacuum drawer 300, the control unit 700 can obtain the volume of each ingredient. However, the weight change value of each ingredient cannot be obtained individually. Here, the ingredients in the vacuum drawer 300 have a total weight change value. For example, when two types of ingredients are present in the vacuum drawer 300, the two types of ingredients have a total weight change value, which is the sum of the weight change values. The control unit 700 obtains the corresponding freshness state of the target ingredient at this total weight change value, the corresponding magnetic field strength range, and the vacuum degree range. Similarly, the intersection of the vacuum degree ranges can also be obtained using this method.

[0224] At the same time, the refrigerator 100 prompts the user to inform that the current storage conditions are set based on the largest food, including suggesting that the user check the status of other food or adjust the storage strategy.

[0225] In this way, refrigerator 100 can prioritize the storage needs of the largest ingredients when multiple ingredients are present. This strategy provides a reasonable storage environment adjustment solution by considering both volume and freshness. This method can further refine volume calculations and storage condition settings based on different types of ingredients.

[0226] In some embodiments, for example, if the volume ratio of fresh produce, fruits and vegetables, and delicacies is 4:3:3, adjustments are made based on the storage of fresh produce. At this time, fruits, vegetables, and delicacies may be frostbitten, and the user needs to be reminded to take them out. For example, if the volume ratio of fresh produce: fruits and vegetables: delicacies is 3:5:2, the storage conditions are adjusted to fruits and vegetables. At this time, the user needs to be reminded of the storage period of fresh meat at this level.

[0227] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0228] For ease of explanation, the above description has been presented 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. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: include: An inner container (200) is formed with a storage chamber; A vacuum drawer (300) is located in the storage chamber, and the vacuum drawer (300) has a receiving cavity; a weight detection member (400) configured to detect the weight of food in the accommodating cavity; A camera module (500) is located in the accommodating cavity; A magnetic field device (600) is configured to cause the accommodating cavity of the vacuum drawer (300) to have a magnetic field; The control component (700), the weight detection component (400), the camera module (500), and the magnetic field device (600) are all electrically connected to the control component (700). The control component (700) is configured as follows: Obtaining a weight change of the food within a first preset time period; When the weight change of the food is greater than a first preset value, obtaining the type, weight, and volume of the food in the containing cavity; Determining the magnetic field intensity range of the vacuum drawer (300) according to the type, weight, and volume of the food; When the weight change of the food is less than or equal to the first preset value, obtaining the type of food in the accommodating cavity and obtaining the weight change of the food within a second preset time period; determining the freshness of the food according to the weight change of the food in the second preset time period; The vacuum degree range of the vacuum drawer (300) and the magnetic field strength range are determined according to the freshness of the food.

2. The refrigerator according to claim 1, wherein: When the weight change of the food is greater than a first preset value, obtaining the type, weight, and volume of the food in the accommodating cavity specifically includes: When the weight increase of the food is greater than the first preset value, it is determined that the food is placed; When the weight reduction value of the food is greater than the first preset value, it is determined that the food is taken out.

3. The refrigerator according to claim 1, wherein: The method of determining the magnetic field intensity range of the vacuum drawer (300) according to the type, weight, and volume of the food material specifically includes: The weight includes at least a first weight, a second weight, and a third weight; When the weight of the food is less than the first weight, the magnetic field strength interval of the vacuum drawer (300) is the first magnetic field strength interval; When the weight of the food is greater than or equal to the first weight and less than the second weight, the magnetic field strength interval of the vacuum drawer (300) is the second magnetic field strength interval; When the weight of the food is greater than or equal to the second weight and less than the third weight, the magnetic field strength interval of the vacuum drawer (300) is the third magnetic field strength interval; wherein the weights of the first weight, the second weight, and the third weight increase in sequence; The magnetic field strength intervals of the first magnetic field strength interval, the second magnetic field strength interval, and the third magnetic field strength interval increase sequentially.

4. The refrigerator according to claim 1, wherein When the weight change of the food is greater than a first preset value, the type, weight, and volume of the food in the accommodating cavity are obtained; and according to the type, weight, and volume of the food, the magnetic field intensity interval of the vacuum drawer (300) is determined; specifically comprising: Acquire an image of the food, and determine the number of the food types according to the image of the food; If the number of the food type is one, determining the magnetic field intensity range of the vacuum drawer (300) according to the weight of the food; If the number of the food types is at least two, then based on the magnetic field strength intervals of the at least two food types, the magnetic field strength interval of the vacuum drawer (300) is determined to be the intersection of the magnetic field strength intervals of the at least two food types.

5. The refrigerator according to claim 1, wherein When the weight change of the food is greater than a first preset value, the type, weight, and volume of the food in the accommodating cavity are obtained; and according to the type, weight, and volume of the food, the magnetic field intensity interval of the vacuum drawer (300) is determined; specifically comprising: Acquire an image of the food, and determine the number of the food types according to the image of the food; If the number of the food type is one, determining the magnetic field intensity range of the vacuum drawer (300) according to the weight of the food; If the number of the food types is at least two, determining the volume ratio of the at least two food types; defining the food type with the largest volume as the target food; The total weight of at least two types of food is obtained, and the magnetic field intensity interval of the vacuum drawer (300) corresponding to the target food under the total weight is determined.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: determining the freshness of the food according to the weight change of the food in the second preset time period; Specifically include: When the weight reduction value of the food in the second preset time period is less than the first weight reduction value, determining that the food is in the first state; When the weight reduction value of the food in the second preset time period is greater than or equal to the first weight reduction value and less than a second weight reduction value, it is determined that the food is in the second state; When the weight reduction value of the food in the second preset time period is greater than or equal to the second weight reduction value and less than a third weight reduction value, it is determined that the food is in the third state; When the weight increase of the food in the second preset time period is less than the first weight increase, determining that the food is in the fourth state; When the weight increase of the food in the second preset time period is greater than or equal to the first weight increase and less than the second weight increase, it is determined that the food is in the fifth state; When the weight increase of the food in the second preset time period is greater than or equal to the second weight increase and less than the third weight increase, it is determined that the food is in the sixth state; Among them, the values of the first weight reduction value, the second weight reduction value, and the third weight reduction value increase in sequence; the values of the first weight increase value, the second weight increase value, and the third weight increase value increase in sequence.

7. The refrigerator according to claim 6, characterized in that When the food is in the first state, it is determined that the vacuum degree interval of the vacuum drawer (300) is the first vacuum degree interval, and the magnetic field strength interval is the first magnetic field strength interval; When the food is in the second state, the vacuum degree interval of the vacuum drawer (300) is determined to be the second vacuum degree interval, and the magnetic field strength interval is determined to be the second magnetic field strength interval; When the food is in the third state, the vacuum degree interval of the vacuum drawer (300) is determined to be the third vacuum degree interval, and the magnetic field strength interval is the fourth magnetic field strength interval; When the food is in the fourth state, it is determined that the vacuum degree interval of the vacuum drawer (300) is the second vacuum degree interval, and the magnetic field strength interval is the second magnetic field strength interval; When the food is in the fifth state, it is determined that the vacuum degree interval of the vacuum drawer (300) is the third vacuum degree interval, and the magnetic field strength interval is the third magnetic field strength interval; When the food is in the sixth state, a prompt is given to the user; Among them, the intensity intervals of the first magnetic field intensity interval, the second magnetic field intensity interval, the third magnetic field intensity interval, and the fourth magnetic field intensity interval increase in sequence; the vacuum degree intervals of the second vacuum degree interval, the first vacuum degree interval, and the third vacuum degree interval increase in sequence.

8. The refrigerator according to any one of claims 1 to 5, characterized in that: Determining the vacuum degree range and the magnetic field strength range of the vacuum drawer (300) according to the freshness of the food further includes: Acquire an image of the food, and determine the number of the food types according to the image of the food; If the number of the food type is one, determining the magnetic field intensity range and the vacuum degree range of the vacuum drawer (300) according to the weight change of the food; If there are at least two types of food materials, and the magnetic field intensity intervals of at least two of the food materials intersect, and the vacuum degree intervals intersect, then the magnetic field intensity interval and the vacuum degree interval of the vacuum drawer (300) are determined based on the intersection; If the number of the food types is at least two, and the magnetic field strength intervals and at least one of the vacuum degree intervals of at least two of the food types do not intersect, the magnetic field strength interval and the vacuum degree interval of the vacuum drawer (300) are determined based on the volume ratio of the at least two food types.

9. The refrigerator according to claim 8, characterized in that If the number of the food types is at least two, and the magnetic field intensity intervals of at least two of the food types intersect, and the vacuum degree intervals intersect, then determining the magnetic field intensity interval and the vacuum degree interval of the vacuum drawer (300) according to the intersection specifically includes: If the number of the food types is at least two, then based on the magnetic field strength interval and the vacuum degree interval of the at least two food types in the fresh state, the magnetic field strength interval of the vacuum drawer (300) is determined to be the intersection of the magnetic field strength intervals of the at least two food types, and the vacuum degree interval of the vacuum drawer (300) is determined to be the intersection of the vacuum degree intervals of the at least two food types.

10. The refrigerator according to claim 8, characterized in that If the number of the food types is at least two, and the magnetic field strength intervals and at least one of the vacuum degree intervals of the at least two food types do not have an intersection, then determining the magnetic field strength interval and the vacuum degree interval of the vacuum drawer (300) according to the volume ratio of the at least two food types specifically includes: If the number of the food types is at least two, determining the volume ratio of the at least two food types; defining the food type with the largest volume as the target food; According to the freshness state of the target food, the vacuum degree interval and the magnetic field strength interval of the vacuum drawer (300) are determined to be the vacuum degree interval and the magnetic field strength interval corresponding to the target food, and a prompt is given to the user.

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