CN114754539A - Freshness retaining container, refrigerator and freshness retaining method - Google Patents
Freshness retaining container, refrigerator and freshness retaining method Download PDFInfo
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- CN114754539A CN114754539A CN202210454120.3A CN202210454120A CN114754539A CN 114754539 A CN114754539 A CN 114754539A CN 202210454120 A CN202210454120 A CN 202210454120A CN 114754539 A CN114754539 A CN 114754539A
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/005—Charging, supporting, and discharging the articles to be cooled using containers
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
- F25D25/024—Slidable shelves
- F25D25/025—Drawers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/16—Sensors measuring the temperature of products
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The application provides a fresh-keeping container, refrigerator and fresh-keeping method, and fresh-keeping container includes: a container body having a receiving cavity; the identification device is arranged in the accommodating cavity and can identify the type of the object; the temperature sensor is arranged in the accommodating cavity and can identify the temperature of the object; the magnetic field generating device is arranged in the accommodating cavity and can generate a magnetic field acting on the accommodating cavity; the processor is respectively connected with the magnetic field generating device, the recognition device and the temperature sensor, and can generate a target magnetic field intensity interval according to the type and the temperature and control the magnetic field generating device to adjust the strength value of the magnetic field acting in the accommodating cavity to the target magnetic field intensity interval. The preservation container can control the magnetic field intensity of the magnetic field in the preservation container according to the inherent properties of the object and the temperature in the preservation container, so that the aim of keeping food fresh for a long time is fulfilled.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a fresh-keeping container, a refrigerator and a fresh-keeping method.
Background
In recent years, people's health consciousness has been gradually increased, and the demand for food material freshness has been increased. The refrigerator is used as the most common household appliance for storing food materials, the food materials are preserved by the refrigerator mainly through temperature reduction, the mode has an inhibiting effect on the growth and the propagation of most bacteria, and meanwhile, the activity of enzyme is passivated, so that the food material is delayed to be rotted and deteriorated, however, the effect of preserving the food materials continuously cannot be achieved only through a low-temperature mode.
Therefore, how to realize the continuous fresh-keeping storage of food materials becomes a technical problem to be urgently solved.
Disclosure of Invention
The embodiment of the application provides a preservation container, a refrigerator and a preservation method, and the preservation container can control the magnetic field intensity of a magnetic field in the preservation container according to the inherent properties of an object and the temperature in the preservation container, so that the aim of keeping the object fresh for a long time is fulfilled.
The embodiment of the application provides a freshness container, includes:
a container body having a receiving cavity capable of receiving an object;
an identification device disposed within the receiving cavity, the identification device capable of identifying a type of the object;
the temperature sensor is arranged in the accommodating cavity and can identify the temperature of the object;
the magnetic field generating device is arranged in the accommodating cavity and can generate a magnetic field acting on the accommodating cavity;
the processor is respectively connected with the magnetic field generating device, the identification device and the temperature sensor, and the processor can generate a target magnetic field intensity interval according to the type and the temperature and control the magnetic field generating device to adjust the strength value of the magnetic field acting in the accommodating cavity to the target magnetic field intensity interval.
In some embodiments, the target magnetic field strength interval is a first magnetic field strength interval or a second magnetic field strength interval, a minimum value of the first magnetic field strength interval being greater than a maximum value of the second magnetic field strength interval; when the temperature is higher than a first preset temperature, the processor generates a first magnetic field intensity interval and controls the intensity value of the magnetic field acting on the accommodating cavity by the magnetic field generating device to be adjusted to be within the first magnetic field intensity interval; when the temperature is less than or equal to the first preset temperature, the processor generates the second magnetic field intensity interval and controls the magnetic field generating device to adjust the intensity value of the magnetic field acting in the accommodating cavity into the second magnetic field intensity interval.
In some embodiments, when the type is fruit or vegetable, the first preset temperature is 4 ℃; the first magnetic field intensity interval is more than 10mT and less than or equal to 20mT, and the second magnetic field intensity interval is more than 5mT and less than or equal to 10 mT.
In some embodiments, when the type is fresh meat or seafood, the first preset temperature is 0 ℃; the first magnetic field intensity interval is more than 15mT and less than or equal to 30mT, and the second magnetic field intensity interval is more than 5mT and less than or equal to 15 mT.
In some embodiments, the magnetic field generating means comprises at least one helmholtz coil, the processor being capable of adjusting the number of turns of the helmholtz coil such that the magnitude of the magnetic field generated by the helmholtz coil is within the target magnetic field strength region.
In some embodiments, the inner wall of the container body further comprises a side wall connected to the top wall and the bottom wall, and the temperature sensor is connected to the side wall.
The embodiment of the application also provides a refrigerator which comprises the preservation container.
The embodiment of the application further provides a fresh-keeping method, is applied to fresh-keeping container, fresh-keeping container is in including having the container body who holds the chamber and setting magnetic field generating device, recognition device and the temperature sensor who holds the intracavity, it can also hold the object to hold the chamber, fresh-keeping method includes:
acquiring the type of the object identified by the identification device;
acquiring the temperature of the object identified by the temperature sensor;
and generating a target magnetic field intensity interval according to the type and the temperature, and controlling the magnetic field generating device to adjust the intensity value of the magnetic field acting in the accommodating cavity to the target magnetic field intensity interval.
In some embodiments, the target magnetic field strength interval is a first magnetic field strength interval or a second magnetic field strength interval, a minimum value of the first magnetic field strength interval is greater than a maximum value of the second magnetic field strength interval, and when the target magnetic field strength interval is generated according to the type and the temperature, the freshness keeping method includes:
when the temperature is higher than a first preset temperature, generating the first magnetic field intensity interval; and when the temperature of the fruit or the vegetable is less than or equal to the first preset temperature, generating the second magnetic field intensity interval.
The fresh-keeping container, the refrigerator and the fresh-keeping method provided by the embodiment of the application have an accommodating cavity, and a magnetic field generating device, a recognition device, a temperature sensor and a processor which are arranged in the accommodating cavity. The processor can generate the target magnetic field strength section according to the data of the category of the object identified by the identification device and the temperature of the object identified by the temperature sensor. Wherein, the target magnetic field intensity interval is a magnetic field intensity value capable of maintaining the object to keep fresh continuously. In the freshness retaining container, the type and temperature of the object are changed, so that the target magnetic field strength is continuously changed. The constantly changing target magnetic field strength can prevent the magnetic field strength in the fresh-keeping container from being maintained at a higher or lower level for a long time, so that objects in the fresh-keeping container can be kept fresh for a long time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a refrigerator provided in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a freshness protection container provided in an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a container body according to an embodiment of the present disclosure.
Fig. 4 is a schematic flow chart of a preservation method provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In recent years, people's health consciousness has been gradually increased, and the demand for food material freshness has been increased. The refrigerator is used as the most common household appliance for storing food materials, the food materials are preserved by the refrigerator mainly through temperature reduction, the mode has an inhibiting effect on growth and propagation of most bacteria, and meanwhile, the activity of enzymes is inactivated, so that the food material spoilage is delayed, and the continuous preservation effect cannot be well achieved only through a low-temperature mode.
Among them, how to realize the continuous fresh-keeping storage of objects becomes an urgent technical problem to be solved.
In the related art, a magnetic field generating device is arranged in a preservation container, and a magnetic field generated by the magnetic field generating device acts on an object in the preservation container, so that the object can be preserved. Specifically, the magnetic field can inhibit bacterial reproduction, delay the ripening of fruits and vegetables, and further improve the freshness of objects in the freshness retaining container. Moreover, the magnetic field generating device has simple structure, easy realization and low operation energy consumption, and can better assist the fresh-keeping container to realize the fresh keeping of objects.
The embodiment of the application provides a preservation container, a refrigerator and a preservation method, and the preservation container can control the magnetic field intensity of a magnetic field acting on the preservation container according to the inherent properties of an object and the temperature in the preservation container, so that the aim of keeping food materials fresh for a long time is fulfilled.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present application.
The freshness retaining container 10 provided by the embodiment of the present application can be applied to machines such as a refrigerator 100, an ice chest, and the like, and referring to fig. 1, the refrigerator 100 can be a single-door refrigerator 100, a double-door refrigerator 100, or a triple-door refrigerator 100, as an example of the refrigerator 100. The refrigerator 100 has a refrigerating chamber or a freezing chamber, and the freshness retaining container 10 may be provided in either the refrigerating chamber or the freezing chamber. It can be understood that the preservation container 10 is used as a space separately set up in a refrigerating chamber or a freezing chamber, which not only can save energy, but also can prevent the food materials in the preservation container 10 from being tainted with the food materials not placed in the preservation container 10.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a freshness protection container according to an embodiment of the present disclosure.
The freshness retaining container 10 provided by the embodiment of the present application includes a container body 11, a magnetic field generating device 14, a recognition device 12, a temperature sensor 13, and a processor 15. The container body 11 has a receiving cavity 111, and the receiving cavity 111 can receive an object, for example, the object is a food material. The magnetic field generating device 14 is disposed in the accommodating cavity 111, and the magnetic field generating device 14 can generate a magnetic field acting on the accommodating cavity 111. The identification device 12 is disposed in the accommodating cavity 111, and the identification device 12 can identify the type of the object. The temperature sensor 13 is disposed in the accommodating cavity 111, and the temperature sensor 13 can identify the temperature of the object. The processor 15 is connected to the magnetic field generating device 14, the identification device 12, and the temperature sensor 13, respectively, and the processor 15 can generate a target magnetic field strength interval according to the type of the object and the temperature of the object, and control the magnetic field generating device 14 to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field strength interval.
The container body 11 can protect other structures of the freshness protection container 10 and provide a space for storing objects. The shape of the container body 11 may be various, for example, the shape of the container body 11 may be a drawer type, specifically, the container body 11 includes a first casing and a drawer, the first casing has a storage space and an opening communicated with the storage space, the drawer moves from inside the storage space to outside the storage space through the opening, or the drawer moves from outside the storage space to inside the storage space through the opening, that is, a user may perform an object access operation by pushing and pulling the drawer, and it is worth mentioning that the storage space may be a cavity; for another example, please refer to fig. 3, fig. 3 is a schematic structural diagram of a container body according to an embodiment of the present application. The container body 11 may be in the shape of an opening and closing door, specifically, the container body 11 includes a second casing 112 and a door 114 connected to the second casing 112, the door 114 can rotate relative to the second casing 112, and a user can rotate the door 114 to open or close the container body 11 and then access an object. In particular, the housing has a cavity. The container body 11 may be transparent or opaque in color. When the container body 11 is transparent, a user can see the types of objects in the container body 11 through the container body 11, so that the waste of energy caused by frequently opening or closing the container body 11 is avoided; when the color of the container body 11 is opaque, the privacy of the user can be effectively protected. The material of the container body 11 may be plastic, rubber or ceramic, such as ABS (Acrylonitrile Butadiene Styrene), PS (Polystyrene) or purple sand.
Wherein, the magnetic field generated by the magnetic field generating device 14 has the functions of sterilization and oxidation resistance. The sterilization effect means that the magnetic field can change the metabolism mechanism of microorganisms, reduce the relative expression level of bacteria, mold and mycotoxin synthetic gene segments, and effectively inhibit the generation of microbial toxins, thereby achieving the aim of fresh keeping; the antioxidant effect means that the magnetic field can improve the activity of some antioxidant enzymes such as catalase and superoxide dismutase, eliminate hydrogen peroxide and superoxide radical in the food material, and protect the histiocyte of the food material from oxidative damage. It can be understood that, for the food material, the magnetic field generated by the magnetic field generating device 14 can sterilize and resist oxidation, that is, the magnetic field generating device 14 can keep fresh of fruits and vegetables, fresh meat and the like.
Wherein, the types of the objects can be classified as fruits, vegetables, fresh meat, seafood or the like. Other materials can be special objects, such as medicinal materials, pickle and other food materials with special flavors.
In some cases, the recognition device 12 includes at least a camera or a video camera, etc. capable of recording the object features, and the recognition device 12 can also upload the object features to the cloud or a local server to be compared with the features of the known object stored in the cloud or the local server. For example, when the object characteristics are compared with the characteristics of the bananas stored in the cloud, and the comparison result is the same, the object is determined to be a fruit. In other cases, the freshness container 10 also includes a display screen that can display the type of objects within the container body 11, such as fruits, vegetables, fresh meat, seafood, or others. In other cases, the display screen is touchable, and the user may also select the type of item to be dropped via a selection button on the display screen.
The temperature sensor 13 may be a thermopile temperature sensor 13 or an infrared temperature sensor 13. If the temperature sensor 13 is a thermopile type temperature sensor 13, the thermopile type temperature sensor 13 is a pyroelectric infrared ray sensor for measuring the temperature of an object by sensing heat radiation. The detector inside the thermopile temperature sensor 13 converts the received infrared signal into an electrical signal, and the temperature corresponding to the electrical signal is the object temperature measured by the thermopile temperature sensor 13.
For example, the processor 15 may obtain the temperature of the object currently in the cavity through the thermopile temperature sensor 13. For example, the first temperature of the object to be detected is measured by the thermopile temperature sensor 13, and the obtained first temperature is 2 ℃.
In the related art, the thermopile temperature sensor 13 is affected by the components, structure, surface roughness, and other factors of the object during the temperature measurement of the object, so that the measured temperature of the object has a large error. The emissivity of the object can be corrected to the temperature of the object detected by the thermopile temperature sensor 13, so that the detected temperature of the object is more accurate. Emissivity is an inherent property of an object. The emissivity changes with the material, surface roughness, oxidation degree and other conditions of the material, and is an important parameter for reflecting the heat radiation property of the object. For example, pork and vegetables have different emissivities because of different properties such as the material composition and surface roughness of the pork and the vegetables.
In the embodiment of the present application, the material of the object is identified by the identification device 12, and then the processor 15 determines the emissivity of the object. For example, the recognition means 12 detects that the object in the fresh food container 10 is fresh meat, i.e. the processor 15 determines that the emissivity of the fresh meat is 0.9, and finally the processor 15 calculates the actual temperature of the object from the temperature detected by the thermopile temperature sensor 13 and the emissivity. It can be understood that the emissivity is used as a calibration coefficient, and the temperature calculated by combining the temperature detected by the thermopile temperature sensor 13 and the emissivity is a more accurate object temperature, which reflects the real temperature of the object, so that the measurement error is small.
The processor 15 may generate the target magnetic field strength interval according to the type of the object, which may be fruit, vegetable, fresh meat or seafood, and the temperature. The processor 15 may be located within the cavity or outside the cavity.
The freshness keeping container 10, the refrigerator 100 and the freshness keeping method provided by the embodiment of the application, the freshness keeping container 10 is provided with a containing cavity 111, and a magnetic field generating device 14, a recognition device 12, a temperature sensor 13 and a processor 15 which are arranged in the containing cavity 111. The processor 15 can generate the target magnetic field intensity section from the data of the type of the object recognized by the recognition device 12 and the temperature of the object recognized by the temperature sensor 13. Wherein, the target magnetic field intensity interval is a magnetic field intensity value capable of maintaining the object to keep fresh continuously. In the freshness retaining container 10, the type and temperature of the object are changed, and thus the target magnetic field strength is also changed. The constantly changing target magnetic field strength can prevent the magnetic field strength in the preservation container 10 from being maintained at a higher or lower level for a long time, so that objects in the preservation container 10 can be preserved for a long time and the energy-saving effect is achieved.
In some embodiments, the target magnetic field strength interval may be a first magnetic field strength interval or a second magnetic field strength interval, a minimum value of the first magnetic field strength interval being greater than a maximum value of the second magnetic field strength interval.
When the temperature of the object is higher than the first preset temperature, the processor 15 generates a first magnetic field intensity interval, and controls the magnetic field generating device 14 to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to be within the first magnetic field intensity interval; when the temperature of the object is less than or equal to the first preset temperature, the processor 15 generates a second magnetic field intensity interval, and controls the magnetic field generating device 14 to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to be within the second magnetic field intensity interval.
For example, when the first preset temperature is 10 ℃ and the temperature of the object is higher than 10 ℃, the processor 15 controls the magnetic field generating device 14 to generate the first magnetic field strength interval of more than 10mT and less than or equal to 20 mT; when the temperature of the object is 10 ℃ or lower, the processor 15 controls the magnetic field generating device 14 to generate the second magnetic field intensity interval of more than 5mT and 10mT or lower. For another example, when the first preset temperature is 4 ℃ and the temperature of the object is higher than 4 ℃, the processor 15 controls the magnetic field generating device 14 to generate the first magnetic field intensity interval of more than 5mT and less than or equal to 10 mT; when the temperature of the object is not more than 4 ℃, the processor 15 controls the magnetic field generating device 14 to generate the second magnetic field intensity interval to be more than 0mT and not more than 5 mT.
For another example, when the type of the object is fruit or vegetable, and the temperature of the object is greater than 2 ℃ and less than or equal to 4 ℃, the processor 15 controls the magnetic field intensity interval generated by the magnetic field generating device 14 to be greater than 0mT and less than or equal to 5 mT; when the temperature of the object is higher than 4 ℃ and lower than or equal to 10 ℃, the processor 15 controls the magnetic field intensity interval generated by the magnetic field generating device 14 to be higher than 5mT and lower than or equal to 10 mT; when the temperature of the object is higher than 10 ℃, the processor 15 controls the magnetic field intensity interval generated by the magnetic field generating device 14 to be higher than 10mT and lower than or equal to 20 mT.
For another example, when the type of the object is fresh meat or seafood, and the temperature of the object is greater than-4 ℃ and less than or equal to 0 ℃, the processor 15 controls the magnetic field intensity interval generated by the magnetic field generating device 14 to be greater than 0mT and less than or equal to 5 mT; when the temperature of the object is higher than 0 ℃ and lower than or equal to 10 ℃, the processor 15 controls the magnetic field intensity interval generated by the magnetic field generating device 14 to be higher than 5mT and lower than or equal to 15 mT; when the temperature of the object is higher than 10 ℃, the processor 15 controls the magnetic field intensity interval generated by the magnetic field generating device 14 to be larger than 15mT and smaller than or equal to 30 mT.
In some embodiments, the first predetermined temperature is 10 ℃, the first magnetic field strength interval is greater than 10mT and less than or equal to 20mT, and the second magnetic field strength interval is greater than 5mT and less than or equal to 10mT when the type is fruit or vegetable.
For example, when the type of the object is fruit and the temperature of the object is higher than 10 ℃, the processor 15 generates a target magnetic field strength interval of more than 10mT and less than or equal to 20mT, and controls the magnetic field generating device 14 to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field strength interval; when the type of the object is fruit and the temperature of the object is less than or equal to 10 ℃, the processor 15 generates a target magnetic field strength interval of more than 5mT and less than or equal to 10mT, and controls the magnetic field generating device 14 to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field strength interval.
In some embodiments, when the type is fruit or vegetable, the first predetermined temperature is 4 ℃, the first magnetic field strength interval is greater than 5mT and less than or equal to 10mT, and the second magnetic field strength interval is greater than 0mT and less than or equal to 5 mT.
For example, when the type of the object is fruit, the temperature of the object is greater than 4 ℃ and less than or equal to 10 ℃, the processor 15 generates a target magnetic field strength interval greater than 5mT and less than or equal to 10mT, and controls the magnetic field generating device 14 to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field strength interval; when the type of the object is fruit and the temperature of the object is greater than 2 ℃ and less than or equal to 4 ℃, the processor 15 generates a target magnetic field strength interval greater than 0mT and less than or equal to 5mT, and controls the magnetic field generating device 14 to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field strength interval.
In some embodiments, when the type is fresh meat or seafood, the first predetermined temperature is 10 ℃, the first magnetic field strength interval is greater than 15mT and less than or equal to 30mT, and the second magnetic field strength interval is greater than 5mT and less than or equal to 15 mT.
For example, when the type of the object is fresh meat and the temperature of the object is higher than 10 ℃, the processor 15 generates a first magnetic field strength interval of more than 15mT and less than or equal to 30mT, and controls the magnetic field generating device 14 to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the first magnetic field strength interval; when the type of the object is fresh meat and the temperature of the object is less than or equal to 10 ℃, the processor 15 generates a second magnetic field strength interval of 5mT to 15mT, and controls the magnetic field generating device 14 to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the second magnetic field strength interval.
In some embodiments, when the type is fresh meat or seafood, the first predetermined temperature is 0 ℃, the first magnetic field strength interval is greater than 5mT and less than or equal to 15mT, and the second magnetic field strength interval is greater than 0mT and less than or equal to 5 mT.
For example, when the type of the object is fresh meat and the temperature of the object is higher than 0 ℃, the processor 15 generates a first magnetic field strength interval of more than 5mT and less than or equal to 15mT, and controls the magnetic field generating device 14 to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the first magnetic field strength interval; when the type of the object is fresh meat and the temperature of the object is greater than-4 ℃ and less than or equal to 0 ℃, the processor 15 generates a second magnetic field strength interval of greater than 0mT and less than or equal to 5mT, and controls the magnetic field generating device 14 to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the second magnetic field strength interval.
Wherein the magnetic field generating means 14 comprises at least one helmholtz coil arranged within the cavity, the helmholtz coil being configured to generate the magnetic field.
In some embodiments, the number of turns of the helmholtz coil can be adjusted, so the processor 15 can adjust the number of turns of the helmholtz coil so that the intensity value of the magnetic field generated by the helmholtz coil is within a target magnetic field strength interval.
In other embodiments, the different magnetic field parameters of the magnetic field may cause different preservation effects of the magnetic field on the food materials, and the optimal preservation magnetic field parameters of different types of food materials may be different. For example, for food materials which are easy to mildew, such as dry goods, five cereals and the like, the required magnetic field meets the requirement of inhibiting the growth of mildew; the fruits and vegetables are stored, so that the nutrient substances are easy to lose due to respiration, and the magnetic field of the fruits and vegetables meets the requirements of inhibiting the enzyme activity participating in respiration and reducing the consumption of the nutrient substances; the food material needing to be frozen has overlarge ice crystals in the freezing process, can puncture cell membranes of the food, and can affect the eating mouthfeel due to the loss of juice after thawing. Thus, the magnetic field generating means 14 further comprise a power supply assembly electrically connected to the helmholtz coil, the power supply assembly being configured to supply power to the helmholtz coil. It will be appreciated that the power supply assembly inputs electrical signals to the helmholtz coil to adjust the magnetic field produced by the helmholtz coil. For example, the electrical signal may be a constant voltage that modulates the magnetic field generated by the Helmholtz coil into a static magnetic field; for another example, the electrical signal may be an alternating voltage, and the magnetic field generated by the helmholtz coil is adjusted to be an alternating magnetic field; for another example, the electrical signal may be a pulsed voltage that modulates the magnetic field generated by the Helmholtz coil into a pulsed magnetic field.
The adjustment of the magnetic field intensity generated by the magnetic field generating device 14 may be performed by changing the magnitude of the current or by changing the number of turns of the current-carrying helmholtz coil. It will be appreciated that the greater the value of the input current, the higher the magnetic field strength; the greater the number of turns of the energized coil, the higher the strength of the magnetic field.
It is understood that the number of helmholtz coils is plural, and the plurality of helmholtz coils are respectively provided on the inner wall 113 of the container body 11. The inner wall 113 of the container body 11 may include a bottom wall 1132, a top wall 1131 disposed opposite to the bottom wall 1132, and a side wall 1133 connected to the bottom wall 1132 and the top wall 1131, where the side wall 1133 includes a first sub-side wall, a second sub-side wall, a third sub-side wall, and a fourth sub-side wall connected in sequence.
For example, the number of helmholtz coils is 2, wherein one helmholtz coil is disposed on the first sub-sidewall and the other helmholtz coil is disposed on the third sub-sidewall. Alternatively, one of the Helmholtz coils may be disposed on the bottom wall 1132 of the freshness retaining container 10 and the other Helmholtz coil may be disposed on the top wall 1131 of the freshness retaining container 10. For another example, when the number of helmholtz coils is 4, the helmholtz coils are respectively disposed on the first sub sidewall, the second sub sidewall, the third sub sidewall and the fourth sub sidewall.
In some embodiments, the plurality of helmholtz coils are symmetrically disposed with respect to each other on the inner wall 113 of the container body 11. It will be appreciated that the symmetrically arranged helmholtz coils provide a more uniform distribution and strength of the magnetic field generated within the cavity. The helmholtz coil may be made of copper, aluminum, or any other material that can generate a magnetic field by energization.
In some embodiments, the helmholtz coil is disposed on the first sub-sidewall, and the iron plate is disposed on the third sub-sidewall opposite to the first sub-sidewall, and the helmholtz coil interacts with the iron plate to make the distribution and intensity of the magnetic field generated in the cavity more uniform.
In some embodiments, the inner wall 113 of the container body 11 includes a top wall 1131 and a bottom wall 1132 opposite to the top wall 1131, and the identification device 12 is connected to the top wall 1131 to enable the identification device 12 to identify the object placed on the bottom wall 1132. It will be appreciated that when the identification device 12 is disposed on the top wall 1131, the identification device 12 can more clearly identify objects disposed on the bottom wall 1132, avoiding obstruction by the packaging of the objects.
In some embodiments, the inner wall 113 of the container body 11 further includes a side wall 1133, the side wall 1133 is connected to the top wall 1131 and the bottom wall 1132, and the temperature sensor 13 is connected to the side wall 1133. It can be understood that, in general, there is cold air in the accommodating cavity 111, and the cold air has a high density and is easy to sink, resulting in a high temperature near the top wall 1131 in the accommodating cavity 111 and a low temperature near the bottom wall 1132, if the temperature sensor 13 is disposed on the top wall 1131 or the bottom wall 1132, the temperature measured by the temperature sensor 13 may be inaccurate due to the gas near the top wall 1131 or the gas near the bottom wall 1132. The temperature sensor 13 is disposed on the sidewall 1133, and can accurately measure the object in the accommodating cavity 111.
Referring to fig. 2 and fig. 4, fig. 4 is a schematic flow chart of a preservation method according to an embodiment of the present application.
The application also provides a fresh-keeping method, which is applied to the fresh-keeping container 10, wherein the fresh-keeping container 10 comprises a container body 11 with a containing cavity 111, and a magnetic field generating device 14, a recognition device 12 and a temperature sensor 13 which are arranged in the containing cavity 111, the containing cavity 111 can also contain objects, and the fresh-keeping method comprises the following steps:
Wherein, the types of the objects can be divided into fruits, vegetables, fresh meat, seafood or the like. Other materials can be special objects, such as medicinal materials, pickle and other food materials with special flavors.
The recognition device 12 at least includes a device such as a camera or a video camera capable of recording the object characteristics, and the recognition device 12 can also upload the object characteristics to a cloud or a local server, and compare the object characteristics with the characteristics of the known object stored in the cloud or the local server. For example, when the object characteristics are compared with the characteristics of the bananas stored in the cloud, and the comparison result is the same, the object is determined to be a fruit. In other cases, the freshness container 10 also includes a display screen that can display the type of objects within the container body 11, such as fruits, vegetables, fresh meat, seafood, or others. In some cases, the display screen is touchable, and the user may also select the type of item to be dropped via a selection button on the display screen.
For example, the freshness container 10 may be provided with the type of object currently in the cavity by the identification device 12. For example, the identification means 12 detects that the type of object is fruit.
the temperature sensor 13 may be a thermopile temperature sensor 13 or an infrared temperature sensor 13. If the temperature sensor 13 is a thermopile type temperature sensor 13, the thermopile type temperature sensor 13 is a pyroelectric infrared ray sensor that measures the temperature of an object by sensing thermal radiation. The detector inside the thermopile temperature sensor 13 converts the received infrared signal into an electrical signal, and the temperature corresponding to the electrical signal is the object temperature measured by the thermopile temperature sensor 13.
For example, the freshness protection container 10 can obtain the temperature of the object in the cavity through the thermopile type temperature sensor 13. For example, the temperature of the object to be detected is measured by the thermopile temperature sensor 13, and the obtained temperature is 2 ℃.
And step 230, generating a target magnetic field intensity interval according to the type and the temperature, and controlling the magnetic field generating device 14 to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field intensity interval.
Wherein, the magnetic field generated by the magnetic field generating device 14 has the functions of sterilization and oxidation resistance. The sterilization effect means that the magnetic field can change the metabolism mechanism of microorganisms, reduce the relative expression level of bacteria, mold and mycotoxin synthetic gene segments, and effectively inhibit the generation of microbial toxins, thereby achieving the aim of fresh keeping; the antioxidant effect means that the magnetic field can improve the activity of antioxidant enzymes such as catalase and superoxide dismutase, eliminate hydrogen peroxide and superoxide radical in the food material, and protect the histocyte of the food material from oxidative damage. It can be understood that, for the food materials, the magnetic field generated by the magnetic field generating device 14 can sterilize and resist oxidation, that is, the magnetic field generating device 14 can keep fruits, vegetables, fresh meat and the like fresh.
For example, the freshness retaining container 10 generates a target magnetic field intensity range according to the type of the object and the temperature of the object, and controls the magnetic field generating device 14 to adjust the intensity value of the magnetic field acting in the accommodating chamber 111 to the target magnetic field intensity range.
For example, when the type of the object is fruit, and the temperature of the object is higher than 10 ℃, the target magnetic field strength interval is generated to be 10mT to 20mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field strength interval; when the type of the object is fruit and the temperature of the object is 4 ℃ to 10 ℃, the target magnetic field intensity interval is 5mT to 10mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field intensity interval; when the type of the object is fruit, and the temperature of the object is 2 ℃ to 4 ℃, the target magnetic field intensity interval is 0mT to 5mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field intensity interval. The determination of the target magnetic field strength interval between the vegetables and the fruits and the adjustment of the strength value of the magnetic field acting in the accommodating cavity 111 are the same, and are not described herein again.
For another example, when the type of the object is fresh meat and the temperature of the object is higher than 10 ℃, the target magnetic field strength interval is generated to be 15mT to 30mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field strength interval; when the type of the object is fresh meat and the temperature of the object is 0 ℃ to 10 ℃, a target magnetic field intensity interval of 5mT to 10mT is generated, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field intensity interval; when the type of the object is fresh meat and the temperature of the object is-4 ℃ to 0 ℃, the target magnetic field intensity interval is generated to be 0mT to 5mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the target magnetic field intensity interval. The determination of the target magnetic field strength interval between the fresh meat and the seafood and the adjustment of the strength value of the magnetic field acting in the accommodating cavity 111 are the same, and are not described herein again.
In some embodiments, the target magnetic field strength interval may be a first magnetic field strength interval or a second magnetic field strength interval, a minimum value of the first magnetic field strength interval is greater than a maximum value of the second magnetic field strength interval, and the step of generating the target magnetic field strength interval according to the type and the temperature includes:
when the temperature is higher than a first preset temperature, a first magnetic field intensity interval is generated; and when the temperature is less than or equal to the first preset temperature, generating a second magnetic field intensity interval.
For example, when the temperature of the object is higher than a first preset temperature, a first magnetic field intensity interval is generated, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to be within the first magnetic field intensity interval; when the temperature of the object is less than or equal to the first preset temperature, a second magnetic field intensity interval is generated, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to be within the second magnetic field intensity interval.
For example, when the first preset temperature is 10 ℃ and the temperature of the object is higher than 10 ℃, the first magnetic field intensity interval generated by the magnetic field generating device 14 is controlled to be higher than 10mT and less than or equal to 20 mT; when the temperature of the object is less than or equal to 10 ℃, the second magnetic field intensity interval generated by the magnetic field generating device 14 is controlled to be more than 5mT and less than or equal to 10 mT. For another example, when the first preset temperature is 4 ℃ and the temperature of the object is higher than 4 ℃, the first magnetic field intensity interval generated by the magnetic field generating device 14 is controlled to be more than 5mT and less than or equal to 10 mT; when the temperature of the object is not more than 4 ℃, the second magnetic field intensity interval generated by the magnetic field generating device 14 is controlled to be more than 0mT and not more than 5 mT.
For another example, when the type of the object is fruit or vegetable, and the temperature of the object is greater than 2 ℃ and less than or equal to 4 ℃, the magnetic field intensity interval generated by the magnetic field generating device 14 is controlled to be greater than 0mT and less than or equal to 5 mT; when the temperature of the object is more than 4 ℃ and less than or equal to 10 ℃, the magnetic field intensity interval generated by the magnetic field generating device 14 is controlled to be more than 5mT and less than or equal to 10 mT; when the temperature of the object is higher than 10 ℃, the magnetic field intensity interval generated by the magnetic field generating device 14 is controlled to be higher than 10mT and less than or equal to 20 mT.
In some embodiments, when the type of the object is fruit or vegetable, and the temperature of the object is greater than 10 ℃, a first magnetic field strength interval is generated to be greater than 10mT and less than or equal to 20mT, and the magnetic field generating device 14 is controlled to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the first magnetic field strength interval; when the type of the object is fruit or vegetable, and the temperature of the object is greater than 4 ℃ and less than or equal to 10 ℃, a second magnetic field intensity interval is generated to be greater than 5mT and less than or equal to 10mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the second magnetic field intensity interval.
In some embodiments, when the type of the object is fruit or vegetable, and the temperature of the object is higher than 4 ℃, a first magnetic field strength interval is generated to be greater than 5mT and less than or equal to 10mT, and the magnetic field generating device 14 is controlled to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the first magnetic field strength interval; when the type of the object is fruit, and the temperature of the object is greater than 2 ℃ and less than or equal to 4 ℃, a second magnetic field intensity interval is generated to be greater than 0mT and less than or equal to 5mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the second magnetic field intensity interval.
In some embodiments, when the type of the object is fresh meat or seafood, and the temperature of the object is higher than 10 ℃, a first magnetic field strength interval is generated to be greater than 15mT and less than or equal to 30mT, and the magnetic field generating device 14 is controlled to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the first magnetic field strength interval; when the type of the object is fresh meat or seafood and the temperature of the object is not more than 10 ℃, a second magnetic field intensity interval is generated to be more than 5mT and not more than 15mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the second magnetic field intensity interval.
In some embodiments, when the type of the object is fresh meat or seafood, and the temperature of the object is higher than 0 ℃, a first magnetic field strength interval is generated to be greater than 5mT and less than or equal to 15mT, and the magnetic field generating device 14 is controlled to adjust the strength value of the magnetic field acting in the accommodating cavity 111 to the first magnetic field strength interval; when the type of the object is fresh meat and the temperature of the object is greater than-4 ℃ and less than 0 ℃, a second magnetic field intensity interval is generated to be greater than 0mT and less than or equal to 5mT, and the magnetic field generating device 14 is controlled to adjust the intensity value of the magnetic field acting in the accommodating cavity 111 to the second magnetic field intensity interval.
The embodiment of the application also provides a storage medium, wherein the storage medium stores a computer program, and when the computer program runs on a computer, the computer is enabled to execute the freshness keeping method in any embodiment.
For example, in some embodiments, when the computer program is run on a computer, the computer performs the steps of:
acquiring the type of the object identified by the identification device; acquiring the temperature of an object identified by a temperature sensor; and generating a target magnetic field intensity interval according to the type and the temperature, and controlling the magnetic field generating device to adjust the strength value of the magnetic field acting in the accommodating cavity to the target magnetic field intensity interval. The above operations can be implemented in the foregoing embodiments, and are not described in detail herein.
Wherein the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
Since the instructions stored in the storage medium can execute the steps in any preservation method provided in the embodiments of the present application, beneficial effects that can be achieved by any preservation method provided in the embodiments of the present application can be achieved, for details, see the foregoing embodiments, and are not described herein again.
It should be noted that, for the preservation method of the embodiment of the present application, it can be understood by a person skilled in the art that all or part of the process of implementing the preservation method of the embodiment of the present application can be completed by controlling the relevant hardware through a computer program, where the computer program can be stored in a computer readable storage medium, such as a memory of an electronic device, and executed by at least one processing chip in the electronic device, and during the execution process, the process of implementing the embodiment of the preservation method can be included.
The freshness keeping container 10, the refrigerator 100 and the freshness keeping method provided by the embodiment of the application, the freshness keeping container 10 is provided with a containing cavity 111, and a magnetic field generating device 14, a recognition device 12, a temperature sensor 13 and a processor 15 which are arranged in the containing cavity 111. The processor 15 is capable of generating a target magnetic field strength interval from data of the type of the object identified by the identification device 12 and the temperature of the object identified by the temperature sensor 13. Wherein, the target magnetic field intensity interval is a magnetic field intensity value capable of maintaining the object to keep fresh continuously. In the freshness retaining container 10, the type and temperature of the object are changed, and thus the target magnetic field strength is also changed continuously. The constantly changing target magnetic field strength can prevent the magnetic field strength in the preservation container 10 from being maintained at a higher or lower level for a long time, so that objects in the preservation container 10 can be preserved for a long time and the energy-saving effect is achieved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.
The preservation container, the refrigerator and the preservation method provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A freshness retaining container, comprising:
a container body having a receiving cavity capable of receiving an object;
an identification device disposed within the receiving cavity, the identification device capable of identifying a type of the object;
the temperature sensor is arranged in the accommodating cavity and can identify the temperature of the object;
the magnetic field generating device is arranged in the accommodating cavity and can generate a magnetic field acting on the accommodating cavity;
the processor is respectively connected with the magnetic field generating device, the identification device and the temperature sensor, and the processor can generate a target magnetic field intensity interval according to the type and the temperature and control the magnetic field generating device to adjust the strength value of the magnetic field acting in the accommodating cavity to the target magnetic field intensity interval.
2. The freshness container of claim 1, wherein the target magnetic field strength interval is a first magnetic field strength interval or a second magnetic field strength interval, a minimum value of the first magnetic field strength interval being greater than a maximum value of the second magnetic field strength interval; when the temperature is higher than a first preset temperature, the processor generates a first magnetic field intensity interval and controls the intensity value of the magnetic field acting on the accommodating cavity by the magnetic field generating device to be adjusted to be within the first magnetic field intensity interval; when the temperature is less than or equal to the first preset temperature, the processor generates the second magnetic field intensity interval and controls the magnetic field generating device to adjust the intensity value of the magnetic field acting in the accommodating cavity into the second magnetic field intensity interval.
3. The freshness container according to claim 2, wherein when the type is fruit or vegetable, the first preset temperature is 10 ℃; the first magnetic field intensity interval is greater than 10mT and less than or equal to 20mT, and the second magnetic field intensity interval is greater than 5mT and less than or equal to 10 mT.
4. The freshness container of claim 2, wherein when the type is fresh meat or seafood, the first preset temperature is 10 ℃; the first magnetic field intensity interval is larger than 15mT and smaller than or equal to 30mT, and the second magnetic field intensity interval is larger than 5mT and smaller than or equal to 15 mT.
5. The freshness container according to any one of claims 1 to 4, wherein the magnetic field generating means comprises at least one Helmholtz coil, the processor being capable of adjusting the number of turns of the Helmholtz coil such that the strength value of the magnetic field generated by the Helmholtz coil is within the target magnetic field strength interval.
6. A freshness container according to any one of claims 1 to 4, wherein the inner wall of the container body comprises a top wall and a bottom wall disposed opposite to the top wall, the identification means being provided at the top wall so that the identification means can identify an object placed at the bottom wall.
7. The freshness container of claim 6, wherein the inner wall of the container body further comprises a side wall connected to the top wall and the bottom wall, and the temperature sensor is connected to the side wall.
8. A refrigerator comprising the freshness retaining container of any one of claims 1 to 7.
9. A fresh-keeping method is characterized by being applied to a fresh-keeping container, wherein the fresh-keeping container comprises a container body with a containing cavity, and a magnetic field generating device, a recognition device and a temperature sensor which are arranged in the containing cavity, the containing cavity can also contain objects, and the fresh-keeping method comprises the following steps:
acquiring the type of the object identified by the identification device;
acquiring the temperature of the object identified by the temperature sensor;
and generating a target magnetic field intensity interval according to the type and the temperature, and controlling the magnetic field generating device to adjust the strength value of the magnetic field acting in the accommodating cavity to the target magnetic field intensity interval.
10. A freshness keeping method according to claim 9, wherein the target magnetic field strength interval is a first magnetic field strength interval or a second magnetic field strength interval, a minimum value of the first magnetic field strength interval is larger than a maximum value of the second magnetic field strength interval, and when the target magnetic field strength interval is generated according to the type and the temperature, the freshness keeping method comprises:
when the temperature is higher than a first preset temperature, generating the first magnetic field intensity interval; and when the temperature is less than or equal to the first preset temperature, generating the second magnetic field intensity interval.
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| CN202210454120.3A CN114754539A (en) | 2022-04-27 | 2022-04-27 | Freshness retaining container, refrigerator and freshness retaining method |
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| CN202210454120.3A CN114754539A (en) | 2022-04-27 | 2022-04-27 | Freshness retaining container, refrigerator and freshness retaining method |
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