CN114909851A - Refrigerator and preservation method - Google Patents

Abstract

The present application provides a refrigerator and a fresh-keeping method. The refrigerator includes a first fresh-keeping container with a first accommodating cavity and a second fresh-keeping container with a second accommodating cavity. The first fresh-keeping container is used for refrigerating objects, and the second fresh-keeping container is used for A frozen object; a first sensor and a sterilization device arranged in the first accommodating cavity; a second sensor and a first magnetic field generating device arranged in the second accommodating cavity; together with the first sensor, the sterilization device, the second sensor and the A processor connected to the first magnetic field generating device, the processor is used for controlling the sterilizing device according to the concentration of microorganisms in the first accommodating cavity, and controlling the first magnetic field generating device according to the concentration of microorganisms in the second accommodating cavity. The refrigerator can realize the continuous freshness preservation of the objects in the refrigerator.

Description

Refrigerator and preservation method

technical field

The invention relates to the technical field of refrigeration equipment, in particular to a refrigerator and a fresh-keeping method.

Background technique

In recent years, people's health awareness has gradually increased, and the demand for food preservation has also increased. The refrigerator is the most common household appliance for food storage. The main way to keep food fresh is to lower the temperature. This method has an inhibitory effect on the growth and reproduction of most microorganisms, and at the same time inactivates the activity of enzymes, thereby delaying the spoilage of food. The low temperature method is not very good at achieving continuous fresh-keeping effect.

Therefore, how to realize the continuous preservation and storage of ingredients has become an urgent technical problem to be solved.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a refrigerator and a fresh-keeping method, and the refrigerator can achieve continuous fresh-keeping of objects placed in the refrigerator.

The embodiment of the present application provides a refrigerator, comprising:

a first fresh-keeping container, which has a first accommodating cavity, and the first fresh-keeping container is used for refrigerating objects;

a first sensor, disposed in the first accommodating cavity, and the first sensor is used to acquire the concentration of microorganisms in the first accommodating cavity;

The sterilization device is arranged in the first accommodating cavity;

The second fresh-keeping container has a second accommodating cavity, and the second fresh-keeping container is used for freezing objects;

a second sensor, disposed in the second accommodating cavity, the second sensor is used to acquire the concentration of microorganisms in the second accommodating cavity;

a first magnetic field generating device, disposed in the second accommodating cavity, the first magnetic field generating device is used to generate a first magnetic field, and the first magnetic field can act on the second accommodating cavity;

a processor connected to the first sensor, the sterilization device, the second sensor and the first magnetic field generating device, the processor is used for controlling the concentration of microorganisms in the first containing chamber The sterilization device sterilizes the objects in the first accommodating cavity, and controls the intensity of the magnetic field generated by the first magnetic field generating device to be greater than a preset magnetic field intensity according to the concentration of microorganisms in the second accommodating cavity.

In some embodiments, the refrigerator further includes a third sensor, the third sensor is disposed in the first accommodating cavity, the third sensor is used to identify the object in the first accommodating cavity, and the processing The processor is connected to the third sensor, and the processor is further configured to: if the third sensor recognizes that an object is stored in the first accommodating cavity, control the first sensor to acquire the first accommodating cavity If the concentration of microorganisms in the first accommodating cavity is greater than or equal to a first preset value, the sterilization device is controlled to sterilize the object.

In some embodiments, the refrigerator further includes a second magnetic field generating device, the second magnetic field generating device is disposed in the first accommodating cavity, the second magnetic field generating device is used for generating a second magnetic field, the The second magnetic field can act on the first accommodating cavity, the processor is connected to the second magnetic field generating device, and the processor is further configured to: if the concentration of microorganisms in the first accommodating cavity is greater than or equal to the second If the preset value is set, the strength of the magnetic field generated by the second magnetic field generating device is controlled to be greater than the preset magnetic field strength.

In some embodiments, the refrigerator further includes a first prompter, the first prompter is connected to the processor, and the processor is further configured to: if the concentration of microorganisms in the first accommodating cavity is greater than or equal to The third preset value is to control the first prompter to issue prompt information.

In some embodiments, the first fresh-keeping container has an air inlet and an air outlet, the refrigerator further includes a fourth sensor and a fifth sensor, the fourth sensor is disposed at the air inlet, and the fourth sensor used to obtain the concentration of microorganisms at the air inlet, the fifth sensor is arranged at the air outlet, the fifth sensor is used to obtain the concentration of microorganisms at the air outlet, the fourth sensor and the The fifth sensor is connected to the processor, and the processor is further configured to control the sterilization device according to the concentration of microorganisms at the air inlet and the concentration of microorganisms at the air outlet.

In some embodiments, the refrigerator further includes a fan, and the fan is used to regulate the flow speed of the gas in the first fresh-keeping container; if the concentration of microorganisms in the first accommodation cavity and the concentration of microorganisms at the air inlet and the difference between the concentrations of microorganisms at the air outlet is greater than or equal to a preset difference, the processor is also used to control the rotation speed of the fan to increase the flow speed of the gas in the first fresh-keeping container .

In some embodiments, the processor is further configured to: calculate the average value of the concentration of microorganisms in the first containing chamber, the concentration of microorganisms at the air inlet, and the concentration of microorganisms at the air outlet, if the If the average value is greater than the preset average value, the on-off ratio of the working time of the sterilization device is increased.

In some embodiments, the processor is further configured to: control the second sensor to obtain the concentration of microorganisms in the second holding chamber; if the concentration of microorganisms in the second holding chamber is greater than or equal to a fourth preset value , the on-off ratio of the first magnetic field generating device is increased.

In some embodiments, the refrigerator further includes a second prompter, the second prompter is connected to the processor, and the processor is further configured to: if the concentration of microorganisms in the second accommodating cavity is greater than or equal to The fifth preset value is to control the second prompter to issue prompt information.

An embodiment of the present application further provides a fresh-keeping method, which is applied to a refrigerator, where the refrigerator includes a first fresh-keeping container having a first accommodating cavity and a second fresh-keeping container having a second accommodating cavity, and the first fresh-keeping container is used for refrigeration an object, the second fresh-keeping container is used for freezing the object, a first sensor and a sterilization device are arranged in the first accommodating cavity, and the first sensor is used to obtain the concentration of microorganisms in the first accommodating cavity, The sterilization device is used to sterilize the objects in the first accommodating cavity, and the second sensor is arranged in the second accommodating cavity, and the second sensor is used to obtain the information in the second accommodating cavity. the concentration of microorganisms, the first magnetic field generating device is arranged in the second accommodating cavity, the first magnetic field generating device is used to generate a first magnetic field, and the first magnetic field can act on the second accommodating cavity; the fresh-keeping The method includes controlling the sterilization device to sterilize objects in the first accommodating cavity according to the concentration of microorganisms in the first accommodating cavity, and controlling the first sterilization device according to the concentration of microorganisms in the second accommodating cavity The strength of the magnetic field generated by the magnetic field generating device is greater than the preset magnetic field strength.

The refrigerator provided by the embodiment of the present application includes a first fresh-keeping container with a first accommodating cavity and a second fresh-keeping container with a second accommodating cavity; for the first fresh-keeping container, the first fresh-keeping container is used for refrigerating objects, and the first fresh-keeping container is used for refrigerating objects. A sensor and a sterilization device are arranged in the first accommodating cavity; for the second fresh-keeping container, the second fresh-keeping container is used for freezing objects, and the second sensor and the first magnetic field generating device are arranged in the second accommodating cavity; processing The device is connected to the first sensor, the sterilizing device, the second sensor and the first magnetic field generating device. When the object needs to be refrigerated and fresh, the object can be placed in the first accommodation cavity, the first sensor is used to detect the concentration of microorganisms placed in the first accommodation cavity, and the processor controls the concentration of microorganisms in the first accommodation cavity The sterilization device sterilizes the object placed in the first accommodating cavity; when the object needs to be frozen and fresh, the object can be placed in the second accommodating cavity, and the second sensor is used to detect the object placed in the second accommodating cavity. The concentration of microorganisms, the processor controls the first magnetic field generating device to generate a magnetic field according to the concentration of microorganisms in the second accommodating cavity and act on the objects in the second accommodating cavity, so that the objects in the second accommodating cavity can be kept fresh continuously. It can be seen from the above that for objects with different fresh-keeping needs, not only can an appropriate temperature be provided for preservation, but also different fresh-keeping means can be used to preserve the freshness of the objects, so as to achieve continuous fresh-keeping of ingredients.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic structural diagram of a refrigerator according to an embodiment of the present application.

FIG. 2 is a first fresh-keeping container and a first structural schematic diagram of the interior provided by the embodiment of the present application.

FIG. 3 is a schematic diagram of a second fresh-keeping container and a first structure inside thereof provided in an embodiment of the present application.

FIG. 4 is a schematic structural diagram of a first fresh-keeping container according to an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a second fresh-keeping container according to an embodiment of the present application.

FIG. 6 is a schematic diagram of a first fresh-keeping container and a second structure inside thereof provided in an embodiment of the present application.

FIG. 7 is a schematic diagram of a first fresh-keeping container and a third structure inside thereof provided in an embodiment of the present application.

FIG. 8 is a schematic diagram of a first fresh-keeping container and a fourth structure inside according to an embodiment of the present application.

FIG. 9 is a schematic diagram of a first fresh-keeping container and a fifth structure inside the first fresh-keeping container provided by the embodiment of the present application.

FIG. 10 is a schematic diagram of a second fresh-keeping container and a second structure inside of the second fresh-keeping container provided by the embodiment of the present application.

FIG. 11 is a schematic flowchart of a fresh-keeping method provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

In recent years, people's health awareness has gradually increased, and the demand for food preservation has also increased. The refrigerator is the most common household appliance for food storage. The main way to keep food fresh is to lower the temperature. This method has an inhibitory effect on the growth and reproduction of most microorganisms, and at the same time inactivates the activity of enzymes, thereby delaying the spoilage of food. The low temperature method is not very good at achieving continuous fresh-keeping effect. Therefore, how to realize the continuous preservation and storage of ingredients has become an urgent technical problem to be solved.

Therefore, the embodiments of the present application provide a refrigerator and a fresh-keeping method, and the refrigerator can realize the continuous fresh-keeping of objects placed in the refrigerator.

Please refer to FIG. 1, FIG. 1 is a schematic structural diagram of a refrigerator provided by an embodiment of the application, FIG. 2 is a schematic structural diagram of a first fresh-keeping container and an interior thereof provided by an embodiment of the application, and FIG. 3 is provided by an embodiment of the application. A schematic diagram of the second fresh-keeping container and the first structure inside.

The refrigerator 100 may be a single door refrigerator, a double door refrigerator or a three door refrigerator. The refrigerator 100 includes a first fresh-keeping container 11 for refrigerating objects and a second fresh-keeping container 21 for freezing objects.

The first fresh-keeping container 11 has a first accommodating cavity 111, the refrigerator 100 further includes a first sensor 12 and a sterilization device 13, the first sensor 12 and the sterilization device 13 are arranged in the first accommodating cavity 111, the first The sensor 12 is used to acquire the concentration of microorganisms in the first accommodating chamber 111 , and the sterilizing device 13 sterilizes the first accommodating chamber 111 . The refrigerator 100 further includes a processor 30, the processor 30 may be disposed in the first accommodating cavity 111 or outside the first accommodating cavity 111, the processor 30 is connected to the first sensor 12 and the sterilization device 13, the processor 30 The sterilization device 13 can be controlled to sterilize the first accommodating cavity 111 according to the concentration of microorganisms in the first accommodating cavity 111 .

The second fresh-keeping container 21 has a second accommodating cavity 211 , the refrigerator 100 further includes a second sensor 22 and a first magnetic field generating device 23 , and the second sensor 22 and the first magnetic field generating device 23 are disposed in the second accommodating cavity 211 , the second sensor 22 is used for acquiring the concentration of microorganisms in the second accommodating cavity 211 , the first magnetic field generating device 23 is used for generating a first magnetic field, and the first magnetic field can act on the second accommodating cavity 211 . The above-mentioned processor 30 can also be arranged in the second accommodating cavity 211 or outside the second accommodating cavity 211 , and the processor 30 is also connected to the second sensor 22 and the first magnetic field generating device 23 . The concentration of microorganisms inside controls the strength of the magnetic field generated by the first magnetic field generating device 23 to be greater than the preset magnetic field strength.

It can be understood that the first fresh-keeping container 11 is used for refrigerating objects, and refrigeration refers to a preservation method for preserving objects at a refrigerating temperature (above the freezing point), and the preservation method reduces the rate of biochemical reactions and changes caused by microorganisms. rate, can extend the shelf life of fresh food and processed products. The second fresh-keeping container 21 is used for freezing objects, and freezing refers to a preservation method for preserving objects at a freezing temperature (below freezing point). The growth and reproduction of microorganisms prevents food spoilage.

Please refer to FIG. 4 and FIG. 5 , FIG. 4 is a schematic structural diagram of a first fresh-keeping container provided by an embodiment of the present application, and FIG. 5 is a structural schematic diagram of a second fresh-keeping container provided by an embodiment of the present application.

Wherein, the shape of the first fresh-keeping container 11 or the second fresh-keeping container 21 can be various, for example, the shape of the first fresh-keeping container 11 or the second fresh-keeping container 21 can be a drawer type. 4. The first fresh-keeping container 11 or the second fresh-keeping container 21 includes a first casing 212 and a drawer 213, the first casing 212 has a storage space 2121 and an opening communicating with the storage space 2121, and the drawer is connected to the storage space through the opening. 2121 to the outside of the storage space 2121, or the drawer moves from the outside of the storage space 2121 to the inside of the storage space 2121 through the opening, that is, the user can access objects by pushing and pulling the drawer. It is worth noting that the storage space 2121 can be The first accommodating cavity 111 or the second accommodating cavity 211 ; for another example, please continue to refer to FIG. 5 , the shape of the first fresh-keeping container 11 or the second fresh-keeping container 21 may be a door-opening type, taking the first fresh-keeping container 11 as an example, The first fresh-keeping container 11 includes a second casing 114 and a door 115 connected to the second casing 114 . The door 115 can be rotated relative to the second casing 114 , and a user can open or close the door 115 by rotating the door 115 . After the first fresh-keeping container 11, the object access operation is performed. Specifically, the housing has a first accommodating cavity 111 or a second accommodating cavity 211 . The color of the first fresh-keeping container 11 or the second fresh-keeping container 21 may be transparent or opaque. When the color of the first fresh-keeping container 11 or the second fresh-keeping container 21 is transparent, the user can see the objects in the first fresh-keeping container 11 or the second fresh-keeping container 21 through the first fresh-keeping container 11 or the second fresh-keeping container 21 . type, thereby avoiding the waste of energy caused by frequent opening or closing of the first fresh-keeping container 11 or the second fresh-keeping container 21; when the color of the first fresh-keeping container 11 or the second fresh-keeping container 21 is opaque, the user's privacy can be effectively protected. Protect. The material of the first fresh-keeping container 11 or the second fresh-keeping container 21 may be plastic, rubber or ceramic, such as ABS (Acrylonitrile Butadiene Styrene plastic, acrylonitrile-butadiene-styrene), PS (Polystyrene, polystyrene) or Purple sand, etc.

The number of the first sensor 12 or the second sensor 22 can be multiple, and when the first fresh-keeping container 11 or the second fresh-keeping container 21 is a drawer type, the first sensor 12 or the second sensor 22 can be arranged at the first fresh-keeping container 11 or the second fresh-keeping container 22 Optionally, the top and side walls of the container 11 or the second fresh-keeping container 21 may be provided on the rear side wall.

The first sensor 12 can be a biosensor, which can detect microorganisms and toxins existing on the object, can also detect the freshness of the object, and can also detect the pesticide residue on the object. Optionally, the biosensor detects microorganisms and toxins present on the object. For example, when a user puts an object into the first accommodating cavity 111 , the first sensor 12 identifies microorganisms and toxins existing on the object, generates microorganism data, and then transmits the microorganism data to the processor 30 .

Wherein, the sterilizing device 13 may be a sterilizing device 13 such as an ultraviolet sterilizing device, a plasma device, or ozone. The ultraviolet disinfection device uses ultraviolet rays of appropriate wavelengths to destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the cells of microorganisms, causing growth cell death and/or regenerative cell death to achieve sterilization and disinfection. Effect. The plasma device can bombard microbial molecules with a large number of energetic electrons generated by dielectric discharge under the action of an external electric field, causing them to ionize, dissociate and excite them, and then trigger a series of complex physical and chemical reactions. It can be converted into simple small molecule safe substances, or the toxic and harmful substances can be converted into non-toxic, harmless or low-toxic and low-harm substances. For example, when a user puts an object into the first accommodating cavity 111 , the first sensor 12 identifies microorganisms and toxins existing on the object, generates microorganism data, and then transmits the microorganism data to the processor 30 . After acquiring the microbial data, the processor 30 controls the sterilization device 13 to work according to the microbial data, that is, to sterilize the surface of the object.

Wherein, the second sensor 22 can be a biosensor, which can detect microorganisms and toxins existing on the object, can also detect the freshness of the object, and can also detect the pesticide residue on the object. Optionally, the biosensor detects microorganisms and toxins present on the object. For example, when a user puts an object into the second accommodating cavity 211 , the second sensor 22 identifies microorganisms and toxins existing on the object, generates data, and then transmits the data to the processor 30 .

The magnetic field generated by the first magnetic field generating device 23 has the functions of sterilization and anti-oxidation. The effect of sterilization means that the magnetic field can change the metabolic mechanism of microorganisms, reduce the relative expression level of bacterial, mold and mycotoxin synthetic gene fragments, and effectively inhibit the production of microbial toxins, so as to achieve the purpose of preservation; the effect of anti-oxidation means that the magnetic field will increase some The activity of antioxidant enzymes such as catalase and superoxide dismutase eliminates hydrogen peroxide and superoxide free radicals in food, and protects the tissue cells of food from oxidative damage, such as fat and oil oxidation. In addition, the magnetic field generated by the first magnetic field generating device 23 can prevent the object from generating large ice crystals during the freezing process. Specifically, the large ice crystals will damage the cell wall, causing the outflow of cytoplasm, thereby causing the quality of the food to decrease. When the object is frozen, the freezing speed decreases from the surface to the center, and the uneven distribution of the freezing speed can easily cause the quality of the object to decrease. Long-term freezing, not only the large ice crystals will destroy the tissue structure, but also the cells cannot be restored to their original state after thawing, and the cell fluid will be lost in large quantities, which will affect the flavor and quality of the object. For example, when a user puts an object into the second accommodating cavity 211 , the second sensor 22 identifies microorganisms and toxins existing on the object, generates microorganism data, and then transmits the microorganism data to the processor 30 . After acquiring the microbial data, the processor 30 controls the strength of the magnetic field generated by the first magnetic field generator 23 to be greater than the preset magnetic field strength according to the microbial data, so that the object can be sterilized and anti-oxidized, and large ice crystals can be prevented in the frozen object.

The refrigerator 100 provided in the embodiment of the present application includes a first fresh-keeping container 11 having a first accommodating cavity 111 and a second fresh-keeping container 21 having a second accommodating cavity 211; for the first fresh-keeping container 11, the first fresh-keeping container 11 For refrigerating objects, the first sensor 12 and the sterilizing device 13 are arranged in the first accommodating cavity 111; for the second fresh-keeping container 21, the second fresh-keeping container 21 is used for freezing objects, the second sensor 22 and the first A magnetic field generating device 23 is disposed in the second accommodating cavity 211 ; the processor 30 is connected to the first sensor 12 , the sterilizing device 13 , the second sensor 22 and the first magnetic field generating device 23 . When the object needs to be refrigerated and fresh, the object can be placed in the first accommodating cavity 111 , and the first sensor 12 is used to detect the concentration of microorganisms placed in the first accommodating cavity 111 . The microbial concentration control sterilization device 13 in the sterilization device 13 sterilizes the objects placed in the first accommodating chamber 111; when the object needs to be frozen and fresh, the object can be placed in the second accommodating chamber 211, and the second sensor 22 is used for Detecting the concentration of microorganisms placed in the second accommodating cavity 211, the processor 30 controls the first magnetic field generator 23 to generate a magnetic field according to the concentration of microorganisms in the second accommodating cavity 211 and acts on the objects in the second accommodating cavity 211, so that the first magnetic field is generated. The objects in the two accommodating chambers 211 can be kept fresh continuously. It can be seen from the above that for objects with different fresh-keeping needs, not only can an appropriate temperature be provided for preservation, but also different fresh-keeping means can be used to preserve the freshness of the objects, so as to achieve continuous fresh-keeping of ingredients.

In some embodiments, please refer to FIG. 6 , FIG. 6 is a schematic diagram of the first fresh-keeping container and the second structure inside the first fresh-keeping container provided by the embodiment of the present application. The refrigerator 100 further includes a third sensor 14 , the third sensor 14 is disposed in the first accommodating cavity 111 , the third sensor 14 is used to identify objects in the first accommodating cavity 111 , the processor 30 and the third sensor 14 is connected, and if the third sensor 14 recognizes that an object is stored in the first accommodating cavity 111 , the sterilizing device 13 is controlled to sterilize the object. If the third sensor 14 recognizes that there is no object stored in the first accommodating cavity 111 , the processor 30 controls the second sensor 22 and the sterilizing device 13 to not work.

The third sensor 14 can be an infrared sensor and an image sensor. The infrared sensor can detect whether an object is stored in the first accommodating cavity 111 by utilizing the properties of infrared reflection, refraction, scattering, interference and absorption; The object in the first accommodating cavity 111 is photographed, and the photographed image and video are detected, that is, it can be detected whether the object is stored in the first accommodating cavity 111 .

For example, when a user puts an object into the first accommodating cavity 111, the third sensor 14 recognizes the object in the first accommodating cavity 111, and recognizes that the object is stored in the first accommodating cavity 111 and the first accommodating cavity 111 is stored in the first accommodating cavity 111. The information that an object is stored in the cavity 111 is transmitted to the processor 30 , and after the processor 30 receives the information that the object is stored in the first accommodating cavity 111 , the first sensor 12 detects the microorganisms and toxins present on the object. Microbial data is identified and generated, which is then transmitted to processor 30 . After acquiring the microbial data, the processor 30 controls the sterilization device 13 to work according to the microbial data, that is, to sterilize the surface of the object. After the user takes out the object from the first accommodating cavity 111, the third sensor 14 identifies the object in the first accommodating cavity 111, and then recognizes that there is no object stored in the first accommodating cavity 111 and the first accommodating cavity 111 The information that there is no object stored in the accommodating cavity 111 is transmitted to the processor 30, and the processor 30 controls the first sensor 12 and the sterilization device 13 to stop after receiving the information that there is no object stored in the first accommodating cavity 111. Work.

Wherein, if the third sensor 14 recognizes that an object is stored in the first accommodating cavity 111, the sterilizing device 13 is controlled to sterilize the object. For example, if the third sensor 14 recognizes that an object is stored in the first accommodating cavity 111 , the processor 30 controls the first sensor 12 to obtain the concentration of microorganisms in the first accommodating cavity 111 , if the microorganisms in the first accommodating cavity 111 When the concentration is greater than or equal to the first preset value, the sterilizing device 13 is controlled to sterilize the object. It can be understood that, if the third sensor 14 recognizes that an object is stored in the first accommodating cavity 111 , it is defined as an initial time, and at this initial time, the sterilizing device 13 works. For example, at the initial time, the on-off ratio of the sterilization device 13 is 0 to 30%, and the current flowing through the sterilization device 13 is 0 to 0.3A.

It can be understood that, by judging whether there is an object in the first accommodation chamber 111 through the third sensor 14, and then confirming whether the first sensor 12 and the sterilizing device 13 are working, the first sensor 12 can be dynamically activated or deactivated. The sensor 12 and the sterilizing device 13 prevent the overload of the refrigerator 100 from being too high, and save energy effectively.

In some embodiments, please refer to FIG. 7 , FIG. 7 is a schematic diagram of a first fresh-keeping container and a third structure inside according to an embodiment of the present application. The refrigerator 100 further includes a second magnetic field generating device 15, the second magnetic field generating device 15 is disposed in the first accommodating cavity 111, the second magnetic field generating device 15 is used for generating a second magnetic field, and the second magnetic field can act on the first accommodating cavity 111. an accommodating chamber 111, the processor 30 is connected to the second magnetic field generating device 15, the processor 30 is further used for: if the concentration of microorganisms in the first accommodating chamber 111 is greater than or equal to a second preset value, control the generation of the second magnetic field Device 15 works. If the concentration of microorganisms in the first accommodating chamber 111 is less than the second preset value, the second magnetic field generating device 15 is controlled to stop working.

The magnetic field generated by the second magnetic field generating device 15 has the functions of sterilization and anti-oxidation. The effect of sterilization means that the magnetic field can change the metabolic mechanism of microorganisms, reduce the relative expression level of bacterial, mold and mycotoxin synthetic gene fragments, and effectively inhibit the production of microbial toxins, so as to achieve the purpose of preservation; the effect of anti-oxidation means that the magnetic field will increase some The activity of antioxidant enzymes such as catalase and superoxide dismutase eliminates hydrogen peroxide and superoxide free radicals in food, and protects the tissue cells of food from oxidative damage, such as fat and oil oxidation. For example, when a user puts an object into the first accommodating cavity 111 , the first sensor 12 identifies microorganisms and toxins existing on the object, generates microorganism data, and then transmits the microorganism data to the processor 30 . After acquiring the microorganism data, the processor 30 determines whether the first magnetic field generating device 23 and the sterilizing device 13 are working by comparison. If the concentration of microorganisms in the first accommodating chamber 111 is less than the second preset value, the processor 30 controls the sterilization device 13 to work; if the concentration of microorganisms in the first accommodating chamber 111 is greater than or equal to the second preset value, then The processor 30 controls the second magnetic field generating device 15 and the sterilizing device 13 to work.

It can be understood that, by confirming whether the first sensor 12 is working through the concentration of microorganisms in the first accommodating cavity 111, the second magnetic field generating device 15 can be dynamically activated or deactivated, so as to avoid excessive load in the refrigerator 100 and effectively save energy. .

Wherein, the concentration of microorganisms in the first accommodating cavity 111 is different, and the intensity and on-off ratio of the magnetic field generated by the second magnetic field generating device 15 are also different. For example, two different microorganism concentration values are preset in the processor 30: a first preset microorganism concentration value and a second preset microorganism concentration value, where the first preset microorganism concentration value is smaller than the second preset microorganism concentration value , the first preset microorganism concentration value is greater than the second preset value. If the concentration of microorganisms in the first accommodating cavity 111 is greater than or equal to the second preset value and less than the first preset microorganism concentration value, the intensity of the magnetic field generated by the first magnetic field generator 23 is controlled to be 0 to 2 mt, and the on-off ratio is 30% to 50%; if the concentration of microorganisms in the first accommodating cavity 111 is greater than the first preset microorganism concentration value and less than the second preset microorganism concentration value, the magnetic field intensity generated by the second magnetic field generator 15 is controlled to be 2mt to 10mt and the second magnetic field generating device 15 is in working state.

In some embodiments, please refer to FIG. 8 , FIG. 8 is a schematic diagram of a first fresh-keeping container and a fourth structure inside provided by an embodiment of the present application. The refrigerator 100 further includes a first prompter 16, and the first prompter 16 is connected to the processor 30. If the concentration of microorganisms in the first accommodating cavity 111 is greater than or equal to a third preset value, the processor 30 is further configured to control the first prompter 16. A prompter 16 issues prompt messages.

Wherein, the first prompter 16 may be a display screen, a buzzer, an alarm, and a lamp bead, and correspondingly, the prompting information may be text information, prompting sound, colored light, and the like.

It can be set that, when the concentration of microorganisms in the first accommodating cavity 111 is greater than or equal to the third preset value, this phenomenon indicates that the concentration of microorganisms on the object in the first accommodating cavity 111 has exceeded the edible standard, and the object has been If it is not suitable to eat, the processor 30 controls the prompter to send out prompt information to prompt the user that it is not suitable to eat.

It can be understood that, by setting the first prompter 16, it can not only prompt the user that the object in the first container 111 is not suitable for use, but also prompt the user to remove the object in time to avoid the contamination of the first container after the microorganism continues to grow. Other objects in cavity 111.

In some embodiments, please refer to FIG. 9 , FIG. 9 is a schematic diagram of the first fresh-keeping container and the fifth structure inside the first fresh-keeping container provided by the embodiment of the present application. The first fresh-keeping container 11 has an air inlet 112 and an air outlet 113. The refrigerator 100 further includes a fourth sensor 17 and a fifth sensor 18. The fourth sensor 17 and the fifth sensor 18 are both connected to the processor 30. The air inlet 112 is used to obtain the concentration of microorganisms at the air inlet 112, the fifth sensor 18 is arranged at the air outlet 113, and is used to obtain the concentration of microorganisms at the air outlet 113. The concentration of microorganisms and the concentration of microorganisms at the air outlet 113 control the sterilization device 13 .

Wherein, the fourth sensor 17 or the fifth sensor 18 may be a biosensor, and the biosensor may detect microorganisms and toxins existing on the object, and may also detect the freshness of the object, and may also detect the pesticide residues in the object. test. It can be understood that, because the first fresh-keeping container 11 has a refrigeration function, the cold air can enter the first accommodating cavity 111 through the air inlet 112 , and then exit from the first accommodating cavity 111 through the air outlet 113 , and the air in the first accommodating cavity 111 The gas realizes heat exchange, thereby realizing the refrigeration function of the first accommodating cavity 111 . During this process, since the gas in the first accommodating cavity 111 is flowing, there may be differences in the bacterial concentration at the air inlet 112, in the first accommodating cavity 111 and at the air outlet 113, so the processor 30 can The concentration of microorganisms at the air outlet 112 , the concentration of microorganisms in the first accommodating cavity 111 , and the concentration of microorganisms at the air outlet 113 jointly control the sterilization device 13 .

For example, when the user places an object in the first accommodating cavity 111 as the initial moment, the first sensor 12 , the fourth sensor 17 and the fifth sensor 18 perform detection to obtain the microorganism concentration a0 in the first accommodating cavity 111 , the air inlet, respectively. The microbial concentration b0 at 112 and the microbial concentration c0 at the air outlet 113 . A third preset microorganism concentration value is set in the processor 30. If a0, b0 or c0 is greater than the third preset microorganism concentration value, the sterilization device 13 is turned on to work for a period of time, such as 6 hours or 12 hours.

In some embodiments, the refrigerator 100 further includes a fan, and the fan is used to regulate the flow speed of the gas in the first fresh-keeping container 11; The difference between the concentrations of microorganisms at the tuyere 113 is greater than or equal to a preset difference, and the processor 30 is further configured to control the rotation speed of the fan to increase the flow speed of the gas in the first accommodating cavity 111 .

If the difference between the concentration of microorganisms in the first accommodating cavity 111 , the concentration of microorganisms at the air inlet 112 and the concentration of microorganisms at the air outlet 113 is smaller than the preset difference, the processor 30 is further configured to control the rotation speed of the fan to The flow velocity of the gas in the first accommodating chamber 111 is maintained or reduced.

For example, the preset difference between the microorganism concentration a1 in the first accommodating cavity 111 , the microorganism concentration b1 at the air inlet 112 , and the microorganism concentration c1 at the air outlet 113 is 2. When |a1-b1|, |a1-c1| or |b1-c1| is greater than or equal to 2, control the rotation speed of the fan to increase the flow speed of the gas in the first accommodating cavity 111 until |a1-b1|, Both |a1-c1| or |b1-c1| are less than 2.

In some cases, when |a0-b0|, |a0-c0|, or |b0-c0| is greater than or equal to 2, the processor 30 may also increase the working current of the sterilization device 13, so that the sterilization of the sterilization device 13 The ability is stronger until |a0-b0|, |a0-c0| or |b0-c0| are all less than 2.

In some cases, the processor 30 is further configured to calculate the average value of the concentration of microorganisms in the first accommodating cavity 111, the concentration of microorganisms at the air inlet 112, and the concentration of microorganisms at the air outlet 113, if the average value is greater than the preset average value, Then the on-off ratio of the working time of the sterilizing device 13 is increased. In some cases, the current through the sterilization device 13 may also be increased.

For example, the average value of the microorganism concentration a1 in the first accommodating cavity 111, the microorganism concentration b1 at the air inlet 112, and the microorganism concentration c1 at the air outlet 113 is E1=(a1+b1+c1)/3, the preset average value for E2. When 1≤E2-E1≤3, the on-off ratio of the sterilization device 13 is 31% to 71%; when 3<E2-E1≤6, the on-off ratio of the sterilization device 13 is 31% to 71% %; when 6<E2-E1≤8, the sterilization device 13 keeps working, and the current passing through the sterilization device 13 is 1 to 1.5A; when E2-E1>8, the sterilization device 13 keeps working, And the current through the sterilization device 13 is 1.2A to 1.5A. The preset average value may be preset by the processor 30, or may be the concentration of microorganisms in the first receiving chamber 111, the concentration of microorganisms at the air inlet 112, and the The average value of the concentration of microorganisms at the air outlet 113 .

In some cases, when the user places an object in the first accommodating chamber 111 as an initial moment, the microbial concentration a0 in the first accommodating chamber 111 , the microbial concentration b0 at the air inlet 112 and the air outlet 113 at the initial moment The average value of the concentration of microorganisms c0 at is E0=(a0+b0+c0)/3, and the preset average value of the concentration of bacteria in the first accommodating cavity 111 at the initial time is E2. The first accommodating cavity 111 is further provided with a second magnetic field generating device 15 . When E0≥E2, the second magnetic field generating device 15 does not work; when 0<(E2-E0)/E2<20, the magnetic field strength of the second magnetic field generating device 15 is 0 to 2 mt, and the on-off ratio is 30% to 50 %; when 30<(E2-E0)/E2<70, the magnetic field strength of the second magnetic field generator 15 is 2mt to 10mt, and the on-off ratio is 30% to 50%; when (E2-E0)/E2*100% When ≥70, the user is prompted that the object is not edible.

In some embodiments, please continue to refer to FIG. 3 , the processor 30 is further configured to control the second sensor 22 to obtain the concentration of microorganisms in the second accommodating cavity 211 ; if the concentration of microorganisms in the second accommodating cavity 211 is greater than or equal to a fourth preset If the concentration of microorganisms in the second accommodating cavity 211 is less than the fourth preset value, the on-off ratio or the magnetic field strength of the second magnetic field generating device 15 is decreased.

For example, when the user places an object in the second accommodating chamber 211 at the initial moment, the concentration of microorganisms in the second accommodating chamber 211 at the initial moment is the fourth preset concentration, and the second accommodating chamber 211 at the initial moment is the fourth preset concentration. The concentration of microorganisms inside is set to e0, and the concentration of microorganisms in the second container 211 is set to e1. When 0≤(e1-e0)/e0<20, the on-off ratio of the second magnetic field generator 15 is 30% to 50%, the magnetic field strength is 0 to 2mt; when 20≤(e1-e0)/e0<50, the on-off ratio of the second magnetic field generator 15 is 40% to 70%, and the magnetic field strength is 0 to 2mt; when 50≤(e1-e0)/e0<80, the second magnetic field generator 15 continues to work, and the magnetic field strength is 2mt to 10mt; when (e1-e0)/e0≥80, the user is prompted that the object cannot be edible. It should be noted that the fourth preset density may also be preset in the processor 30 .

In some embodiments, please refer to FIG. 10 , FIG. 10 is a schematic diagram of the second fresh-keeping container and the second structure inside the second fresh-keeping container provided by the embodiment of the present application. The refrigerator 100 further includes a second prompter 24. The second prompter 24 is connected to the processor 30. If the concentration of microorganisms in the second accommodating cavity 211 is greater than or equal to the fifth preset value, the processor 30 is also used to control the second prompter. 24 issues a prompt message.

Wherein, the second prompter 24 may be a display screen, a buzzer, an alarm, and a lamp bead, and correspondingly, the prompting information may be text information, prompting sound, colored light, and the like.

It can be set that when the concentration of microorganisms in the second accommodating cavity 211 is greater than or equal to the fifth preset value, this phenomenon indicates that the concentration of microorganisms on the object in the second accommodating cavity 211 has exceeded the edible standard, and the object has been If it is not suitable to eat, the processor 30 controls the prompter to send out prompt information to prompt the user that it is not suitable to eat.

It can be understood that, by setting the second prompter 24, it can not only prompt the user that the object in the second accommodating chamber 211 is not suitable for use, but also prompt the user to remove the object in time to avoid the contamination of the second accommodating chamber after the microorganism continues to grow. Other objects in cavity 211.

The embodiment of the present application further provides a fresh-keeping method. Please refer to FIG. 11 , which is a schematic flowchart of the fresh-keeping method provided by the embodiment of the present application. The fresh-keeping method is applied to the refrigerator 100. The refrigerator 100 includes a first fresh-keeping container 11 having a first accommodating cavity 111 and a second fresh-keeping container 21 having a second accommodating cavity 211. The first fresh-keeping container 11 is used for refrigerating objects, and the second fresh-keeping container 11 is used for refrigerating objects. The container 21 is used for freezing objects, the second sensor 22 and the sterilization device 13 are arranged in the first accommodating cavity 111, the second sensor 22 is used to obtain the concentration of microorganisms in the first accommodating cavity 111, and the sterilization device 13 is used to The objects in the first accommodating cavity 111 are sterilized, and the second sensor 22 is arranged in the second accommodating cavity 211. The second sensor 22 is used to obtain the concentration of microorganisms in the second accommodating cavity 211. The preservation method includes: Step 110, Control the sterilization device 13 to sterilize the objects in the first accommodating cavity 111 according to the concentration of microorganisms in the first accommodating cavity 111 ; step 120 , control the sterilization device 23 generated by the first magnetic field generator 23 according to the concentration of microorganisms in the second accommodating cavity 211 . The strength of the magnetic field is greater than the preset magnetic field strength.

The refrigerator 100 may be a single door refrigerator, a double door refrigerator or a three door refrigerator. The refrigerator 100 includes a first fresh-keeping container 11 for refrigerating objects and a second fresh-keeping container 21 for freezing objects.

The first fresh-keeping container 11 has a first accommodating cavity 111, the refrigerator 100 further includes a first sensor 12 and a sterilization device 13, the first sensor 12 and the sterilization device 13 are arranged in the first accommodating cavity 111, the first The sensor 12 is used to acquire the concentration of microorganisms in the first accommodating chamber 111 , and the sterilizing device 13 sterilizes the first accommodating chamber 111 .

The second fresh-keeping container 21 has a second accommodating cavity 211 , the refrigerator 100 further includes a second sensor 22 and a first magnetic field generating device 23 , and the second sensor 22 and the first magnetic field generating device 23 are disposed in the second accommodating cavity 211 , the second sensor 22 is used for acquiring the concentration of microorganisms in the second accommodating cavity 211 , the first magnetic field generating device 23 is used for generating a first magnetic field, and the first magnetic field can act on the second accommodating cavity 211 .

It can be understood that the first fresh-keeping container 11 is used for refrigerating objects, and refrigeration refers to a preservation method for preserving objects at a refrigerating temperature (above the freezing point), and the preservation method reduces the rate of biochemical reactions and changes caused by microorganisms. rate, can extend the shelf life of fresh food and processed products. The second fresh-keeping container 21 is used for freezing objects, and freezing refers to a preservation method for preserving objects at a freezing temperature (below freezing point). The growth and reproduction of microorganisms prevents food spoilage.

The first sensor 12 can be a biosensor, which can detect microorganisms and toxins existing on the object, can also detect the freshness of the object, and can also detect the pesticide residue on the object. Optionally, the biosensor detects microorganisms and toxins present on the object. For example, when a user puts an object into the first accommodating cavity 111, the first sensor 12 identifies microorganisms and toxins existing on the object and generates microorganism data.

Wherein, the sterilizing device 13 may be a sterilizing device 13 such as an ultraviolet sterilizing device, a plasma device, or ozone. The ultraviolet disinfection device uses ultraviolet rays of appropriate wavelengths to destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the cells of microorganisms, causing growth cell death and/or regenerative cell death to achieve sterilization and disinfection. Effect. The plasma device can bombard microbial molecules with a large number of energetic electrons generated by dielectric discharge under the action of an external electric field, causing them to ionize, dissociate and excite them, and then trigger a series of complex physical and chemical reactions. It can be converted into simple small molecule safe substances, or the toxic and harmful substances can be converted into non-toxic, harmless or low-toxic and low-harm substances. For example, when a user puts an object into the first accommodating cavity 111, the first sensor 12 identifies microorganisms and toxins existing on the object and generates microorganism data.

Wherein, the second sensor 22 can be a biosensor, which can detect microorganisms and toxins existing on the object, can also detect the freshness of the object, and can also detect the pesticide residue on the object. Optionally, the biosensor detects microorganisms and toxins present on the object. For example, when a user puts an object into the second accommodating cavity 211, the second sensor 22 identifies microorganisms and toxins existing on the object and generates data.

The magnetic field generated by the first magnetic field generating device 23 has the functions of sterilization and anti-oxidation. The effect of sterilization means that the magnetic field can change the metabolic mechanism of microorganisms, reduce the relative expression level of bacterial, mold and mycotoxin synthetic gene fragments, and effectively inhibit the production of microbial toxins, so as to achieve the purpose of preservation; the effect of anti-oxidation means that the magnetic field will increase some The activity of antioxidant enzymes such as catalase and superoxide dismutase eliminates hydrogen peroxide and superoxide free radicals in food, and protects the tissue cells of food from oxidative damage, such as fat and oil oxidation. In addition, the magnetic field generated by the first magnetic field generating device 23 can prevent the object from generating large ice crystals during the freezing process. Specifically, the large ice crystals will damage the cell wall, causing the outflow of cytoplasm, thereby causing the quality of the food to decrease. When the object is frozen, the freezing speed decreases from the surface to the center, and the uneven distribution of the freezing speed can easily cause the quality of the object to decrease. Long-term freezing will not only destroy the tissue structure of the object by large ice crystals, but also the cells cannot be restored to their original state after thawing, and the cell fluid will be lost in large quantities, which will affect the flavor and quality of the object. For example, when a user puts an object into the second accommodating cavity 211, the second sensor 22 identifies microorganisms and toxins existing on the object and generates microorganism data, and then controls the first magnetic field generating device 23 to work according to the microorganism data. It makes the object sterilizing and anti-oxidizing, and prevents the existence of large ice crystals in the object.

Embodiments of the present application further provide a storage medium, where a computer program is stored in the storage medium, and when the computer program runs on a computer, the computer is made to execute the fresh-keeping method in any of the foregoing embodiments.

For example, in some embodiments, when the above-described computer program is run on a computer, the computer performs the following steps:

The sterilizing device is controlled to sterilize the objects in the first accommodating cavity according to the concentration of microorganisms in the first accommodating cavity, and the intensity of the magnetic field generated by the first magnetic field generating device is controlled according to the concentration of microorganisms in the second accommodating cavity to be greater than the preset magnetic field intensity .

For the specific implementation of the above operations, reference may be made to the foregoing embodiments, and details are not described herein again.

Wherein, the storage medium may include: a read only memory (ROM, Read Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and the like.

Since the instructions stored in the storage medium can execute the steps in any of the preservation methods provided by the embodiments of the present application, the beneficial effects that can be achieved by any of the preservation methods provided by the embodiments of the present application can be achieved. , see the foregoing embodiments for details, and details are not repeated here.

It should be noted that, for the preservation method of the embodiment of the present application, ordinary testers in the art can understand that all or part of the process of realizing the preservation method of the embodiment of the present application can be completed by controlling the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, such as in a memory of an electronic device, and executed by at least one processing chip in the electronic device, and the execution process can include processes such as the embodiments of the preservation method .

The refrigerator 100 provided in the embodiment of the present application includes a first fresh-keeping container 11 having a first accommodating cavity 111 and a second fresh-keeping container 21 having a second accommodating cavity 211; for the first fresh-keeping container 11, the first fresh-keeping container 11 For refrigerating objects, the first sensor 12 and the sterilizing device 13 are arranged in the first accommodating cavity 111; for the second fresh-keeping container 21, the second fresh-keeping container 21 is used for freezing objects, the second sensor 22 and the first A magnetic field generating device 23 is disposed in the second accommodating cavity 211 ; the processor 30 is connected to the first sensor 12 , the sterilizing device 13 , the second sensor 22 and the first magnetic field generating device 23 . When the object needs to be refrigerated and fresh, the object can be placed in the first accommodating cavity 111 , and the first sensor 12 is used to detect the concentration of microorganisms placed in the first accommodating cavity 111 . The microbial concentration control sterilization device 13 in the sterilization device 13 sterilizes the objects placed in the first accommodating chamber 111; when the object needs to be frozen and fresh, the object can be placed in the second accommodating chamber 211, and the second sensor 22 is used for Detecting the concentration of microorganisms placed in the second accommodating cavity 211, the processor 30 controls the first magnetic field generator 23 to generate a magnetic field according to the concentration of microorganisms in the second accommodating cavity 211 and acts on the objects in the second accommodating cavity 211, so that the first magnetic field is generated. The objects in the two accommodating chambers 211 can be kept fresh continuously. It can be seen from the above that for objects with different fresh-keeping needs, not only can an appropriate temperature be provided for preservation, but also different fresh-keeping means can be used to preserve the freshness of the objects, so as to achieve continuous fresh-keeping of ingredients.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

In the description of this application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more features.

The refrigerator and the fresh-keeping method provided by the embodiments of the present application are described in detail above. The principles and implementations of the present application are described herein by using specific examples, and the descriptions of the above embodiments are only used to help the understanding of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. To sum up, the content of this specification should not be construed as a limitation to the present application.

Claims (10)

1. A refrigerator, characterized by comprising:

the first fresh-keeping container is provided with a first accommodating cavity and is used for refrigerating objects;

the first sensor is arranged in the first accommodating cavity and used for acquiring the concentration of microorganisms in the first accommodating cavity;

the degerming device is arranged in the first accommodating cavity;

a second preservation container having a second receiving cavity, the second preservation container being for freezing the object;

the second sensor is arranged in the second accommodating cavity and is used for acquiring the concentration of microorganisms in the second accommodating cavity;

the first magnetic field generating device is arranged in the second accommodating cavity and used for generating a first magnetic field, and the first magnetic field can act on the second accommodating cavity;

the treater, with first sensor the bacteria removing device the second sensor and first magnetic field generating device connects, the treater is used for the basis first microbial concentration control that holds the intracavity the bacteria removing device is right the first object that holds the intracavity carries out the degerming, and the basis the second holds the microbial concentration control that the intracavity the intensity of the magnetic field that first magnetic field generating device produced is greater than preset magnetic field intensity.

2. The refrigerator of claim 1, further comprising a third sensor disposed in the first receiving chamber, the third sensor configured to identify an object in the first receiving chamber, the processor coupled to the third sensor, the processor further configured to: if the third sensor identifies that an object is stored in the first accommodating cavity, controlling the first sensor to acquire the concentration of microorganisms in the first accommodating cavity; and if the concentration of the microorganisms in the first accommodating cavity is greater than or equal to a first preset value, controlling the sterilizing device to sterilize the object.

3. The refrigerator of claim 1, further comprising a second magnetic field generating device disposed in the first accommodating chamber, the second magnetic field generating device configured to generate a second magnetic field capable of acting on the first accommodating chamber, the processor connected to the second magnetic field generating device, the processor further configured to: and if the concentration of the microorganisms in the first accommodating cavity is greater than or equal to a second preset value, controlling the strength of the magnetic field generated by the second magnetic field generating device to be greater than the preset magnetic field strength.

4. The refrigerator of claim 1, further comprising a first reminder coupled to the processor, the processor further configured to: and if the concentration of the microorganisms in the first accommodating cavity is greater than or equal to a third preset value, controlling the first prompter to send out a prompt message.

5. The refrigerator according to claim 1, wherein the first fresh keeping container has an air inlet and an air outlet, the refrigerator further comprises a fourth sensor and a fifth sensor, the fourth sensor is disposed at the air inlet, the fourth sensor is used for acquiring the microorganism concentration at the air inlet, the fifth sensor is disposed at the air outlet, the fifth sensor is used for acquiring the microorganism concentration at the air outlet, the fourth sensor and the fifth sensor are connected to the processor, and the processor is further used for controlling the degerming device according to the microorganism concentration at the air inlet and the microorganism concentration at the air outlet.

6. The refrigerator of claim 5, further comprising a blower for regulating a flow rate of the gas in the first fresh food container; if the microbial concentration in the first accommodating cavity, the microbial concentration at the air inlet and the microbial concentration at the air outlet are different from each other by more than or equal to a preset difference value, the processor is further used for controlling the rotating speed of the fan so as to increase the flowing speed of the gas in the first freshness container.

7. The refrigerator of claim 5, wherein the processor is further configured to: and calculating the average value of the microbial concentration in the first accommodating cavity, the microbial concentration at the air inlet and the microbial concentration at the air outlet, and increasing the on-off ratio of the working time of the sterilizing device if the average value is larger than a preset average value.

8. The refrigerator according to any one of claims 1 to 7, wherein the processor is further configured to: controlling the second sensor to acquire the microorganism concentration in the second accommodating cavity; and if the concentration of the microorganisms in the second accommodating cavity is greater than or equal to a fourth preset value, increasing the on-off ratio of the first magnetic field generating device.

9. The refrigerator of any one of claims 1 to 7, further comprising a second reminder coupled to the processor, the processor further configured to: and if the concentration of the microorganisms in the second accommodating cavity is greater than or equal to a fifth preset value, controlling the second prompter to send out prompt information.

10. The fresh-keeping method is characterized by being applied to a refrigerator, wherein the refrigerator comprises a first fresh-keeping container with a first accommodating cavity and a second fresh-keeping container with a second accommodating cavity, the first fresh-keeping container is used for refrigerating objects, the second fresh-keeping container is used for freezing objects, the first sensor and the sterilizing device are arranged in the first accommodating cavity, the first sensor is used for acquiring the concentration of microorganisms in the first accommodating cavity, the sterilizing device is used for sterilizing objects in the first accommodating cavity, the second sensor is arranged in the second accommodating cavity, the second sensor is used for acquiring the concentration of microorganisms in the second accommodating cavity, and the first magnetic field generating device is arranged in the second accommodating cavity, the first magnetic field generating device is used for generating a first magnetic field, and the first magnetic field can act on the second accommodating cavity; the fresh-keeping method comprises the steps of controlling the sterilizing device to sterilize objects in the first accommodating cavity according to the concentration of microorganisms in the first accommodating cavity, and controlling the strength of the magnetic field generated by the first magnetic field generating device to be larger than a preset magnetic field strength according to the concentration of microorganisms in the second accommodating cavity.

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