WO2023015946A1 - Refrigerator and fresh-keeping storage control method thereof - Google Patents

Abstract

A refrigerator and a fresh-keeping storage control method thereof. The refrigerator comprises: a magnetic field fresh-keeping storage container defining a fresh-keeping storage space, an electromagnetic assembly for applying an electromagnetic field to the fresh-keeping storage space, and a refrigeration assembly for cooling the fresh-keeping storage space. The fresh-keeping storage control method comprises: obtaining a starting event that triggers the start-up of an electromagnetic assembly; determining a temperature threshold range required for a fresh-keeping storage space for fresh-keeping storage; controlling a refrigeration assembly to cool the fresh-keeping storage space to a temperature within the temperature threshold range; and supplying power to the electromagnetic assembly to form an electromagnetic field required for assisting fresh-keeping in the fresh-keeping storage space. Before the magnetic field is generated, refrigeration is completed in advance to prevent affecting the temperature of the fresh-keeping storage space by the heat generated after the electromagnetic assembly is started. The magnetic field helps to improve the storage quality, thereby achieving fresh-keeping storage in refrigerators, especially smart refrigerators, and meeting user needs for smart home appliances.

Description

Refrigerator and fresh-keeping storage control method thereof technical field

The invention belongs to the technical field of fresh-keeping storage, and specifically provides a refrigerator and a fresh-keeping storage control method thereof.

Background technique

Users are also paying more and more attention to the preservation effect of refrigerator storage. For meat, fish, shrimp and other ingredients, the problem of juice loss during storage is easy to cause poor taste and dark color. Especially for some high-end ingredients, the quality will be greatly reduced after a period of storage.

In order to improve the quality of storage, many improvement schemes have appeared in the prior art, such as increasing the freezing speed of food through quick freezing or food entering a supercooled state. This scheme needs to increase the refrigeration capacity of the refrigerator, and will also lead to energy consumption of the refrigerator. Increase. Therefore, improving the quality of frozen storage more efficiently has become a technical problem to be solved urgently by refrigerator developers.

The field of refrigerators is also actively exploring the introduction of magnetic fields into fresh-keeping storage. However, in practical applications in refrigerators, since the fresh-keeping effect depends on multiple aspects such as temperature and magnetic field, the effect of magnetic field-assisted fresh-keeping is not satisfactory. In actual use, it is easy to After the magnetic field is applied, the temperature fluctuation becomes larger, resulting in a decrease in the freshness of the food, and even food spoilage.

Contents of the invention

An object of the present invention is to provide a refrigerator which can effectively improve the freshness preservation effect of a magnetic field and its freshness storage control method.

Another purpose of the present invention is to meet the user's fresh-keeping needs and improve user experience.

A further object of the present invention is to detect magnetic field faults in time.

To achieve the above object, the present invention provides a fresh-keeping storage control method for a refrigerator, wherein the refrigerator includes: a magnetic field fresh-keeping storage container defining a fresh-keeping storage space, an electromagnetic assembly for applying an electromagnetic field to the fresh-keeping storage space, and a Refrigeration components for cooling fresh storage spaces, and

Fresh storage control methods include:

Obtaining a startup event that triggers startup of the electromagnetic component;

Determine the temperature threshold range required for fresh-keeping storage space for fresh-keeping storage;

Control the refrigeration component to cool the fresh-keeping storage space to the temperature threshold range;

Power is supplied to the electromagnetic component to form an electromagnetic field required for auxiliary fresh-keeping in the fresh-keeping storage space.

Optionally, start events include:

The human-computer interaction interface of the refrigerator receives a user input instruction to turn on the magnetic field; and/or

The stored object detection sensor in the magnetic field fresh-keeping storage container detects that stored objects are placed in the fresh-keeping storage space; and/or

The operating state of the refrigerator reaches the preset start-up condition for fresh-keeping storage.

Optionally, before the step of acquiring the startup event that triggers the startup of the electromagnetic component, the method further includes:

Confirm that the magnetic field fresh-keeping storage container is in the closed state, and the refrigeration component has completed at least one refrigeration process for the fresh-keeping storage space after the magnetic field fresh-keeping storage container is closed.

Optionally, the step of determining the temperature threshold range required by the fresh-keeping storage space for fresh-keeping storage includes:

Obtain the set temperature of the magnetic field fresh-keeping storage container;

Judging whether the set temperature is within the preset initial freezing point temperature range, the initial freezing point temperature range is set according to the freezing crystallization temperature in the state of no magnetic field;

If yes, the freezing point temperature range of the magnetic field is obtained, and the freezing point temperature range of the magnetic field is used as the temperature threshold range, and the freezing point temperature of the magnetic field is set according to the freezing crystallization temperature under the action of the magnetic field obtained through pre-testing.

Optionally, when the set temperature is outside the preset initial freezing point temperature range, it also includes:

Obtain the preset temperature correction value;

Decrease the set temperature by the temperature correction value, and use the obtained temperature value to set the temperature threshold range.

Optionally, after the step of forming an electromagnetic field required for auxiliary fresh-keeping in the fresh-keeping storage space, the method further includes:

Obtain the operating status of the refrigerator;

After the preset interruption of the magnetic field occurs in the operating state of the refrigerator, the power supply to the electromagnetic component is stopped, so as to stop forming the magnetic field.

Optionally, after the step of supplying power to the electromagnetic assembly, the step further includes:

Using the magnetic sensor in the magnetic field fresh-keeping storage container to detect the magnetic field strength of the fresh-keeping storage space;

Judging whether the magnetic field strength is within a preset threshold range;

If not, it is determined that the electromagnetic component is working abnormally.

Optionally, after it is determined that the electromagnetic component is working abnormally, it also includes:

Detect the power supply parameters of the power supply device of the electromagnetic component;

In the case of abnormal power supply parameters, output power supply abnormality prompt;

When the power supply parameters are abnormal, the power supply to the electromagnetic component is suspended, and the power supply is restarted after a set period of time, and it is determined whether the electromagnetic component returns to normal. If the electromagnetic component has not returned to normal after repeating the set number of times, an abnormality prompt of the electromagnetic component is output.

Optionally, the refrigerator is an air-cooled refrigerator, and the refrigerating assembly further includes an air supply device for supplying refrigerated airflow to the fresh-keeping storage space; and

During the process of forming the electromagnetic field required for auxiliary freshness preservation in the freshness storage space, the air supply device also supplies cooling airflow to the freshness storage space in a controlled manner, so that the temperature of the freshness storage space is kept within the temperature threshold range.

According to another aspect of the present invention, there is also provided a refrigerator, which includes:

The magnetic field fresh-keeping storage container defines a fresh-keeping storage space inside;

An electromagnetic component is used for applying an electromagnetic field to the fresh-keeping storage space;

a cooling assembly for cooling the fresh storage space; and

A controller, the controller includes a memory and a processor, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, any one of the above fresh-keeping storage control methods is implemented.

Based on the foregoing description, those skilled in the art can understand that, in the foregoing technical solution of the present invention, when the activation event that triggers the activation of the electromagnetic component is acquired, that is, when the magnetic field preservation needs to be activated, the temperature required for fresh-keeping storage is first obtained. Threshold range, control the refrigeration component to cool the fresh-keeping storage space to the temperature threshold range, and then supply power to the electromagnetic component to form the electromagnetic field required for fresh-keeping. Before the magnetic field is generated, the refrigeration is completed in advance to prevent the heat generated by the electromagnetic components from affecting the temperature of the fresh-keeping storage space. The magnetic field helps to improve the storage quality, can shorten the freezing time, reduce the juice loss rate and nutrient loss of food, reduce the number of microorganisms and bacteria, and prolong the fresh-keeping period.

Furthermore, the electromagnetic component can be activated according to the user's instruction, or automatically activated according to the stored objects and the operating status of the refrigerator, which meets different usage requirements, and can fully and flexibly activate the magnetic field preservation function, which improves the user experience.

Furthermore, the solution of the present invention corrects the temperature threshold range according to the effect of the magnetic field on the freezing point temperature, so that the storage temperature and the magnetic field coordinate to complete the preservation function, which solves the problem of temperature fluctuation caused by the magnetic field of the existing magnetic field preservation function.

Furthermore, in the solution of the present invention, the electromagnetic component automatically stops forming a magnetic field after a preset interruption of the magnetic field occurs in the operating state of the refrigerator, so as to prevent the magnetic field from affecting the external components of the refrigerator and other functions of the refrigerator.

Furthermore, the solution of the present invention improves the reliability of magnetic field preservation by detecting the electromagnetic components in time to determine whether there is a failure, so as to remind or deal with it.

Furthermore, the refrigerator adopting the technical solution of the present invention can form a magnetic field in the refrigerator, thereby improving the storage quality of the refrigerator, providing a new fresh-keeping function for the smart refrigerator, satisfying the increasing demand of users for smart refrigerators, and improving the Users enjoy the quality of smart home and smart life.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the components or parts indicated by the same reference number in different drawings are the same or similar; the drawings of the present invention are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic perspective view of a refrigerator according to one embodiment of the present invention

Fig. 2 is a control block diagram of a refrigerator according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of the working principle of a magnetic field fresh-keeping storage container according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of a fresh-keeping storage control method for a refrigerator according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of magnetic field control in a fresh-keeping storage control method of a refrigerator according to an embodiment of the present invention; and

Fig. 6 is a schematic diagram of judging the abnormality of the magnetic field in the fresh-keeping storage control method of the refrigerator according to an embodiment of the present invention.

Detailed ways

FIG. 1 is a schematic perspective view of a refrigerator 10 according to one embodiment of the present invention. The refrigerator 10 of this embodiment may generally include a box body 12, a door body 11, and a refrigeration system (not shown in the figure). The box body 12 may define at least one storage compartment with an open front side, usually a plurality of storage compartments, such as a refrigerated storage compartment, a freezer storage compartment, a variable temperature storage compartment, and the like. The number and functions of the specific storage compartments can be configured according to the prior needs.

Since the box body 12 and the door body 11 of this type of refrigerator are well-known and easy to implement by those skilled in the art, in order not to cover up and obscure the invention points of the present application, the box body 12, the door body 11, and the refrigeration system will be discussed later. Do not repeat itself.

One or more storage compartments of the refrigerator 10 may be provided with magnetic field fresh-keeping storage containers 200 . When the magnetic field fresh-keeping storage container 200 is placed in the frozen storage compartment, it can be used to freeze and keep frozen foodstuffs fresh, inhibit the growth of ice crystal nuclei, make the growth rate of ice crystals higher than the migration rate of water molecules, and produce smaller ice crystals, thereby Reduce the damage to the cells, avoid the loss of juice, accelerate the freezing process, and shorten the freezing time. When the magnetic field fresh-keeping storage container 200 is placed in the refrigerated storage compartment, it can reduce the oxidation-reduction reaction speed of ingredients, reduce nutrition and water loss, prevent ingredients from discoloring, inhibit bacterial growth, and prolong the shelf life of ingredients. The magnetic field fresh-keeping storage container 200 can be arranged in refrigerated storage compartments, freezer storage compartments, and temperature-variable storage compartments, and magnetic field-assisted fresh-keeping can be performed in the above-mentioned storage compartments, and it can also be used as an independent compartment of the refrigerator 10 .

The number of magnetic field fresh-keeping storage containers 200 and the storage compartments arranged therein can be configured according to user requirements. For example, one or more magnetic field fresh-keeping storage containers 200 may be arranged in the refrigerator 10 . A fresh-keeping storage space is defined in the magnetic field fresh-keeping storage container 200 , and the fresh-keeping storage function is realized by controlling the temperature of the fresh-keeping storage space and the magnetic field.

Fig. 2 is a control block diagram of a refrigerator 10 according to an embodiment of the present invention, the refrigerator 10 may include: an electromagnetic assembly 230, a refrigeration assembly 320, a controller 310, and may further optionally be provided with: a storage temperature sensor 330, An open/close detector 340 and a human-computer interaction interface 350 .

The electromagnetic assembly 230 may include one or more coils and a power supply device for supplying power to the coils. The coils may be formed into a flat plate so as to match the side wall of the magnetic field fresh-keeping storage container 200 . The coil has a corresponding waterproof structure, such as dipping paint, plastic sealing, sealing ring or sealing shell to protect the inner cable, and the overall structure is a flat ring shape. The power supply device is used to controlly supply power to the coil to ensure the stability of the supply voltage and supply current. The arrangement position of the coil in the electromagnetic assembly 230 can be selected according to the shape of the magnetic field fresh-keeping storage container 200 itself, for example, it can be placed on the left and right sides, top and bottom sides, or front and rear sides of the magnetic field fresh-keeping storage container 200.

When the magnetic field fresh-keeping storage container 200 is flat as a whole, especially when the magnetic field fresh-keeping storage container 200 is in the form of a drawer, the coils in the electromagnetic assembly 230 can be preferentially arranged on the top and bottom sides of the cylinder 210 . The magnetic field formed by the magnetic field fresh-keeping storage container 200 runs through the fresh-keeping storage space from top to bottom or from bottom to top.

The refrigeration component 320 may be a refrigeration cycle system composed of a compressor, a condenser, a throttling device, an evaporator, and the like. The evaporator is configured to directly or indirectly provide cooling to the storage compartment. The refrigerator 10 of this embodiment can be an air-cooled refrigerator, and an air duct system is arranged in the box body 12, and the cooling air flow through the evaporator is sent to the storage room through the air supply port by the fan, and then returns to the air flow through the air return port. road. Achieve refrigeration.

The controller 310 may be a main control device of the refrigerator 10, and is used for correspondingly controlling the cooling assembly 320, the electromagnetic assembly 230, and the like. The controller 310 may include a processor 312 and a memory 311 . A machine-executable program is stored in the memory 311. When the machine-executable program is executed by the processor 312, it is used to implement any fresh-keeping storage control method in this embodiment. A machine-executable program may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code written in any combination of one or more programming languages or object code.

The storage temperature sensor 330 is used to keep the storage temperature in the fresh storage space. The opening and closing detector 340 is used for the opening and closing state of the magnetic field fresh-keeping storage container 200 . The detection means of the storage temperature sensor 330 and the opening and closing detector 340 are known to those skilled in the art, and the corresponding implementation method can be selected according to the detection requirements, for example, infrared temperature measuring elements, thermocouples, etc. are used to realize the storage temperature sensor 330. , using a Hall device, a contact switch, etc. to realize the opening and closing detector 340 and the like.

The human-computer interaction interface 350 can be formed by using a touch screen or other input and output components, and is used to receive instructions input by the user and output relevant information.

The storage object detection sensor 360 is used to detect the placement of the stored object in the fresh-keeping storage space, and it can determine whether the stored object is placed in the fresh-keeping storage space through a weight detection device, an infrared detection device, an image recognition device, etc., and further It is also possible to determine the amount, weight, type, etc. of the stored objects.

The magnetic sensor 370 is used to detect the magnetic field strength in the fresh-keeping storage space, which can be realized by using a sensing coil, a magnetic sensitive element, and a Hall element, so as to determine the magnitude of the magnetic field strength.

Fig. 3 is a schematic diagram of the working principle of the magnetic field fresh-keeping storage container 200 in one embodiment of the present invention. As shown in FIG. 3 , in some embodiments of the present invention, the box body 100 includes an evaporator chamber 110 , an air supply channel 120 , a return air channel 130 and a storage compartment (not shown in the figure). Wherein, the evaporator chamber 110 and the storage compartment communicate with each other through the air supply channel 120 and the return air channel 130 , so that air circulates between the evaporator room 110 and the storage compartment. The magnetic field fresh-keeping storage container 200 is arranged in the storage compartment. The evaporator chamber 110 is used for arranging the evaporator 300 , and the air flow exchanges heat with the evaporator 300 to form a cooling air flow.

The fan 400 is used to drive air to circulate in the evaporator chamber 110 , the air supply channel 120 , the storage compartment and the return air channel 130 to realize air cooling cycle.

The magnetic field fresh-keeping storage container 200 may be a drawer structure, that is, may include a cylinder body 210 , a drawer 220 , an electromagnetic assembly 230 and an air inlet duct assembly 240 . Wherein, the drawer 220 is installed in the barrel 210 in a slidable manner, and is used for placing stored objects. The electromagnetic assembly 230 is used to provide a magnetic field for the stored objects in the drawer 220. The air inlet channel assembly 240 is configured such that the cold air first cools the electromagnetic assembly 230 and then blows the stored items into the barrel 210 .

The front side of the barrel 210 has an opening 211 that allows the drawer 220 to be inserted into the barrel 210 so that the drawer 220 is slidably installed in the barrel 210 . An air return port communicating with the air return channel 130 is also provided on the cylinder body 210 to introduce the air in the cylinder body 210 into the air return channel 130 . The return air outlet can be arranged on the left side, the right side, the lower side or the upper side of the barrel 210 .

The drawer 220 has a front cover 221 . When the drawer 220 slides into the barrel 210 , the front cover 221 abuts against the front end of the barrel 210 , and there is a gap between the front cover 221 and the frame at the front end of the barrel 210 .

The electromagnetic assembly 230 can be arranged outside the barrel 210 to facilitate the fixing and wiring of the electromagnetic assembly 230 . Of course, those skilled in the art can also arrange the electromagnetic assembly 230 inside the barrel 210 as needed.

The electromagnetic assembly 230 may include a top coil 231 on the top side of the barrel 210 and a bottom coil 232 on the bottom side of the barrel 210 . Preferably, the top coil 231 and the bottom coil 232 are aligned with each other, and the magnetic field generated by the top coil 231 and the bottom coil 232 can cover the drawer 220 after electrification, so that the stored objects at any position in the drawer 220 are in the magnetic field.

The intensity range of the magnetic field can be set to 1Gs-100Gs. In the case of application in the freezing environment, the range of the magnetic field intensity can preferably be 5-60GS, for example, about 20Gs; in the case of application in the refrigerated environment, the range of the magnetic field intensity can be 20-160GS, preferably 40-80Gs, for example about 60Gs. The magnetic field strength of the magnetic field can be a stable value, that is, after the application environment is determined, the magnetic field is always stable within a certain range.

The air inlet assembly 240 includes a top deflector 241 , a bottom deflector 242 and an air guide pipe 243 . Wherein, the top deflector 241 is disposed outside the top coil 231 and forms a top air channel 250 between the top wall of the cylinder 210 . The bottom deflector 242 is disposed on the outer side of the bottom coil 232 and forms a bottom air passage 260 between the bottom wall of the barrel 210 . The air guide pipe 243 is fixedly arranged on the rear portion of the cylinder body 210, and the top of the air guide pipe 243 has an air inlet, and the air guide pipe 243 communicates with the air supply channel 120 through its air inlet, and the air guide pipe 243 is also connected with the top air duct 250. communicate with the bottom air duct 260 respectively. The air duct 243 is used to guide the cool air in the air supply channel 120 to the top air channel 250 and the bottom air channel 260 .

On the premise that the cold air in the air supply channel 120 can be guided to the top air channel 250 and the bottom air channel 260 , those skilled in the art can also omit the arrangement of the air guide pipe 243 as needed. For example, the top air channel 250 and the bottom air channel 260 are directly communicated with the air supply channel 120. Exemplarily, the magnetic field fresh-keeping storage container 200 also includes a top air deflector 241 and a bottom air deflector covering the cylinder body 210. The sleeve on the outside of 242 makes the inner cavity of the sleeve communicate with the top air duct 250 and the bottom air duct 260 , and an air inlet communicating with the air supply channel 120 is provided on the sleeve.

In other embodiments of the present invention, those skilled in the art can also set a damper on the air outlet of the air supply channel 120 or on the air guide pipe 243 (specifically near its air inlet) as required, by adjusting the The damper is used to control whether the cold air in the air supply channel 120 flows to the top air channel 250 and the bottom air channel 260 , or the wind speed at which the cold air in the air supply channel 120 flows to the top air channel 250 and the bottom air channel 260 is controlled by adjusting the damper.

The top air duct 250 is also in communication with the barrel 210 . Specifically, the top air channel 250 has a top air outlet 251, and the top air outlet 251 is aligned with the front cover 221 of the drawer 220, so that the top air channel 250 blows the cold air to the front cover 221, and then the cold air is turned back into the drawer 220. . More specifically, the top air outlet 251 is formed on the frame at the front end of the barrel 210 .

The bottom air duct 260 is also in communication with the barrel 210 . Specifically, the bottom air channel 260 has a bottom air outlet 261 formed on the bottom wall of the barrel 210 . The bottom air channel 260 blows cold air onto the bottom wall of the drawer 220 through the bottom air outlet 261 .

According to the above description, those skilled in the art can easily realize that the coils of the electromagnetic assembly 230 are arranged on the left and right side walls of the magnetic field fresh-keeping storage container 200, and corresponding air inlet channels and return air channels are provided on the left and right side walls.

Based on the foregoing description, those skilled in the art can understand that the magnetic field fresh-keeping storage container 200 of the present invention can prevent the cold wind from directly blowing the stored items in the drawer 220 , thereby preventing the stored items from being frozen. At the same time, due to the arrangement of the electromagnetic assembly 230, the magnetic field generated by the electromagnetic assembly 230 can have a greater impact on the formation of ice crystals during the freezing process, reducing the freezing temperature of the stored object. This allows stored items to be kept at lower temperatures without freezing. Therefore, the air-cooled refrigeration equipment and the magnetic field fresh-keeping storage container 200 of the present invention can effectively prevent the stored items from freezing.

Fig. 4 is a schematic diagram of a fresh-keeping storage control method for a refrigerator according to an embodiment of the present invention. The fresh-keeping storage control method of the refrigerator includes:

In step S402, the startup event that triggers the startup of the electromagnetic component 230 is acquired. The above start time may include: the human-computer interaction interface 350 of the refrigerator receives the magnetic field opening command input by the user; and/or the storage object detection sensor 360 in the magnetic field fresh storage container 200 detects that and/or the operating state of the refrigerator 10 reaches the preset start-up condition for fresh-keeping storage.

The human-computer interaction interface 350 of the refrigerator can be provided with an input interface or operation buttons for receiving magnetic control instructions (magnetic field turn-on instructions and/or magnetic field turn-off refrigeration), and the user of the refrigerator can manually turn on the magnetic field preservation function. After receiving the user's magnetic control command, the refrigerator 10 turns on the magnetic field preservation function, and gives feedback to the user through a display screen or other means.

After the stored object detection sensor 360 detects that stored objects are placed in the fresh-keeping storage space, the refrigerator 10 can automatically turn on the magnetic field fresh-keeping function to realize automatic fresh-keeping. For example, the infrared sensor detects whether there is food in the fresh-keeping storage space. If there is food, the magnetic field will be turned on.

The above fresh-keeping storage startup conditions can be other conditions that can enable the magnetic field fresh-keeping function. For example, the magnetic field fresh-keeping storage container 200 of the refrigerator 10 is closed, the defrosting process of the evaporator 300 is completed, and the refrigerator 10 is powered on and restarted. The specific fresh-keeping storage conditions can be The settings are made according to the function and operating status of the refrigerator 10 and the user's fresh-keeping requirements.

Before the step of obtaining the activation event that triggers the activation of the electromagnetic assembly 230, it may also include: confirming that the magnetic field fresh-keeping storage container 200 is in the closed state, that is, the state in which the fresh-keeping storage space is closed, or called the closed state, and the cooling assembly 320 After the magnetic field fresh-keeping storage container 200 is closed, at least one cooling process of the fresh-keeping storage space has been completed. That is to say, the magnetic field is only activated when the magnetic field fresh-keeping storage container 200 is closed and a refrigeration process has been completed (for air-cooled refrigeration, that is to say, the fan 400, the evaporator 300, etc. have completed a start-stop process). Allow to start. This condition can ensure that the fresh-keeping storage space is in a stable storage state, and even if the electromagnetic component 230 generates heat, it will not cause large fluctuations in the temperature of the storage.

Step S404, determining the temperature threshold range required for fresh-keeping storage in the fresh-keeping storage space. The aforementioned temperature threshold range can be set according to the set temperature of the magnetic field fresh-keeping storage container 200 and the pre-tested fresh-keeping storage effect. For example, step S404 may include: obtaining the set temperature of the magnetic field fresh-keeping storage container 200; judging whether the set temperature is in the preset initial freezing point temperature range, and the initial freezing point temperature range is set according to the freezing crystallization temperature in the non-magnetic field state; if , obtain the temperature range of the freezing point of the magnetic field, and use the freezing point temperature range of the magnetic field as the temperature threshold range, and set the freezing point temperature of the magnetic field according to the freezing crystallization temperature under the action of the magnetic field obtained in the pre-test. The temperature range of the initial freezing point may be the temperature at which moisture in the stored object is frozen and crystallized in the absence of a magnetic field (that is, the freezing crystallization temperature), for example, it may be -1°C to 0°C. If the set temperature of the magnetic field fresh-keeping storage container 200 is within the range of -1°C to 0°C, it indicates that the stored items need to be kept in a non-freezing critical state. After a lot of verification, after applying a magnetic field, the freezing point temperature (freezing crystallization temperature) of the stored object will drop. Therefore, the freezing and crystallization temperature of the stored object under the action of the magnetic field can be obtained by pre-testing, for example, the freezing point temperature of the magnetic field can be set at -4°C to -2°C. This setting method can ensure that the stored objects are kept in the required critical state and improve the storage quality.

Considering that there are differences in the moisture content and moisture distribution modes of different stored objects, as well as the differences in their freezing and crystallization temperatures, the method in this embodiment can also be pre-tested according to the types of stored objects to determine the magnetic field of different types of stored objects Freezing point temperature range, before turning on the magnetic field, identify the type of stored object, and query the corresponding magnetic field freezing point temperature range according to its type, to achieve more targeted control.

When the set temperature is outside the preset initial freezing point temperature range, the method may further include: obtaining a preset temperature correction value; reducing the set temperature by the temperature correction value, and using the obtained temperature value to set a temperature threshold range. That is to say, the temperature setting value of the fresh-keeping storage space is not the temperature in the non-freezing critical state, and food needs to be stored at a higher or lower temperature. Considering that after the magnetic field is applied, the electromagnetic component 230 will generate heat, in order to prevent the heat from affecting the temperature of the storage and causing fluctuations in the temperature of the storage. The method of this embodiment can preset a temperature correction value, such as 3° C. or 2° C. or 4° C., and then lower the set temperature of the fresh-keeping storage space by the above-mentioned temperature correction value. For example, when magnetic field preservation is required in a frozen state, the set freezing temperature is -18°C, and when a magnetic field is applied, the temperature threshold range can be set from -22°C to -20°C. For another example, if the set temperature is 5°C higher than the freezing point of the refrigerated temperature, the temperature threshold range may be set to 1°C to 3°C.

Step S406, controlling the refrigeration assembly 320 to cool the fresh-keeping storage space to a temperature threshold range. Before applying the magnetic field, the temperature of the fresh-keeping storage space is refrigerated to the required temperature range, thereby reducing the temperature fluctuation after the magnetic field is activated.

Step S408, supplying power to the electromagnetic assembly 230, so as to form an electromagnetic field required for assisting freshness preservation in the freshness preservation storage space. The intensity range of the magnetic field can be set to 1Gs-100Gs. In the case of application in the freezing environment, the range of the magnetic field intensity can preferably be 5-60GS, for example, about 20Gs; in the case of application in the refrigerated environment, the range of the magnetic field intensity can be 20-160GS, preferably 40-80Gs, for example about 60Gs. The magnetic field strength of the magnetic field can be a stable value, that is, after the application environment is determined, the magnetic field is always stable within a certain range.

After the step S408 of forming an electromagnetic field required for auxiliary fresh-keeping in the fresh-keeping storage space, it also includes: obtaining the operating state of the refrigerator 10; and stopping power supply to the electromagnetic assembly 230 after a preset interruption of the magnetic field occurs in the operating state of the refrigerator 10. , to stop forming a magnetic field. The aforementioned operating states may include operating parameters of the refrigerator 10, operating states of components, and the like. The interruption of the magnetic field can be set according to the influence of the magnetic field. For example, during the defrosting process of the evaporator 300, refrigeration cannot be performed, and the temperature in the fresh-keeping storage space may rise to a certain extent. In order to reduce the temperature rise, it is necessary to Interrupt the magnetic field. Another example is when the refrigerator door is opened, on the one hand, the entry of humid and high-temperature air from the outside will affect the temperature, and on the other hand, the magnetic field will also have a magnetization effect on external components, especially items that are more sensitive to magnetic fields such as watches. In this case too, it is necessary to interrupt the magnetic field. That is to say, in the method of this embodiment, the power supply to the electromagnetic assembly 230 can be stopped when the door of the refrigerator 10 is opened, the evaporator 300 is defrosted, or other conditions that affect the temperature or the magnetic field. After the above-mentioned special working conditions are over, the magnetic field control is performed again according to the procedure from step S402 to step S408.

After the step of supplying power to the electromagnetic assembly 230, the magnetic sensor 370 in the magnetic field fresh-keeping storage container 200 can also be used to detect the magnetic field strength of the fresh-keeping storage space; determine whether the magnetic field strength is within the preset threshold range; if not, determine whether the electromagnetic assembly 230 Abnormal work. That is to say, the magnetic sensor 370 is used to determine whether the electromagnetic assembly 230 is operating normally, to determine the abnormal state in time, and to improve the reliability of the electromagnetic assembly 230 .

After it is determined that the electromagnetic component 230 is working abnormally, the power supply parameters of the power supply device of the electromagnetic component 230 can also be detected; in the case of abnormal power supply parameters, an abnormal power supply prompt is output. In the case of abnormal power supply parameters, suspend the power supply to the electromagnetic assembly 230, re-supply power after a set period of time, and determine whether the electromagnetic assembly 230 returns to normal. If the electromagnetic assembly 230 has not returned to normal after repeating the set number of times, then output the electromagnetic assembly 230 Exception prompt. That is to say, in the case of an abnormal magnetic field, it is determined whether the abnormality is caused by the power supply or the coil, and some faults are automatically recovered by restarting. If the abnormality cannot be eliminated by restarting, the abnormality prompt is output, and the after-sales maintenance is output through the display or other interactive methods.

Fig. 5 is a schematic diagram of magnetic field control in a refrigerator fresh-keeping storage control method according to an embodiment of the present invention. The magnetic field control process includes:

Step S502, judging whether the refrigerator 10 is defrosting;

Step S504, judging whether there is food placed in the fresh-keeping storage space;

Step S506, judging whether the fresh-keeping storage space is opened;

Step S508, judging whether the cooling assembly 320 has completed cooling at least once;

Step S510, judging whether the electromagnetic component 230 is abnormal;

Step S512, energizing the electromagnetic component 230, and maintaining the temperature of the storage within the set temperature threshold range;

Step S514, closing the magnetic field.

Through the above process, before the magnetic field is generated, the refrigeration is completed in advance, so as to prevent the electromagnetic component 230 from generating heat after starting, which will affect the temperature of the fresh-keeping storage space. And the electromagnetic assembly 230 automatically stops forming a magnetic field after a preset interruption of the magnetic field occurs in the operating state of the refrigerator 10, so as to prevent the magnetic field from affecting the external components of the refrigerator and other functions of the refrigerator.

Fig. 6 is a schematic diagram of judging the abnormality of the magnetic field in the fresh-keeping storage control method of the refrigerator according to an embodiment of the present invention. The magnetic field anomaly judgment process includes:

Step S602, judging whether the power supply of the electromagnetic component 230 is normal, that is, whether the power supply voltage and power supply current are all within an appropriate range;

Step S604, judging whether the magnetic field strength is normal, that is, whether the detection result of the magnetic sensor 370 is normal;

Step S606, judging whether the number of power outages exceeds the limit, that is, whether the number of restarts exceeds the number threshold;

Step S608, if the magnetic field strength is abnormal and the number of power cuts does not exceed the limit, continue the power cut for a set time;

Step S610, power off the electromagnetic assembly 230 again;

Step S612, clearing the abnormality flag and keeping the coil energized;

Step S614, power off, set an abnormal flag, and output an abnormal prompt.

In the solution of this embodiment, by detecting the electromagnetic component 230, it can be determined in time whether there is a failure, so as to remind or deal with it, and improve the reliability of magnetic field preservation.

So far, the technical solutions of the present invention have been described in conjunction with the foregoing embodiments. However, those skilled in the art can easily understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the concept and/or technical principles will fall within the protection scope of the present invention.

Claims (10)

1. A fresh-keeping storage control method for a refrigerator, the refrigerator comprising: a magnetic field fresh-keeping storage container defining a fresh-keeping storage space, an electromagnetic assembly for applying an electromagnetic field to the fresh-keeping storage space, and an electromagnetic assembly for controlling the fresh-keeping storage space. Refrigeration components for cooling the object space, and the fresh-keeping storage control method includes:

   Acquiring a startup event that triggers startup of the electromagnetic component;

   Determining the temperature threshold range required for fresh-keeping storage in the fresh-keeping storage space;

   controlling the refrigerating assembly to refrigerate the fresh-keeping storage space to the temperature threshold range;

   Power is supplied to the electromagnetic assembly to form an electromagnetic field required for assisting freshness preservation in the freshness preservation storage space.
2. The fresh-keeping storage control method according to claim 1, wherein the start event comprises:

   The human-computer interaction interface of the refrigerator receives a magnetic field opening command input by the user; and/or

   The stored object detection sensor in the magnetic field fresh-keeping storage container detects that stored objects are placed in the fresh-keeping storage space; and/or

   The operating state of the refrigerator reaches the preset start-up condition for fresh-keeping storage.
3. The fresh-keeping storage control method according to claim 1, wherein before the step of acquiring an activation event triggering activation of the electromagnetic component, the method further comprises:

   Confirming that the magnetic field fresh-keeping storage container is in a closed state, and that the cooling assembly has completed at least one refrigeration process for the fresh-keeping storage space after the magnetic field fresh-keeping storage container is closed.
4. The fresh-keeping storage control method according to claim 1, wherein the step of determining the temperature threshold range required for fresh-keeping storage in the fresh-keeping storage space comprises:

   Obtain the set temperature of the magnetic field fresh-keeping storage container;

   Judging whether the set temperature is within a preset initial freezing point temperature range, the initial freezing point temperature range is set according to the freezing crystallization temperature in a non-magnetic field state;

   If so, obtain the freezing point temperature range of the magnetic field, and use the freezing point temperature range of the magnetic field as the temperature threshold range, and set the freezing point temperature of the magnetic field according to the freezing crystallization temperature under the action of the magnetic field obtained through pre-testing.
5. fresh-keeping storage control method according to claim 4, wherein

   In the case that the set temperature is outside the preset initial freezing point temperature range, the method further includes:

   Obtain the preset temperature correction value;

   The set temperature is reduced by the temperature correction value, and the temperature threshold range is set by using the obtained temperature value.
6. The fresh-keeping storage control method according to claim 1, wherein after the step of forming an electromagnetic field required for auxiliary fresh-keeping in the fresh-keeping storage space, the method further comprises:

   Obtain the operating status of the refrigerator;

   After the preset interruption of the magnetic field occurs in the operating state of the refrigerator, the power supply to the electromagnetic assembly is stopped, so as to stop forming the magnetic field.
7. The fresh-keeping storage control method according to claim 1, wherein after the step of supplying power to the electromagnetic component, the method further comprises:

   Using the magnetic sensor in the magnetic field fresh-keeping storage container to detect the magnetic field strength of the fresh-keeping storage space;

   judging whether the magnetic field strength is within a preset threshold range;

   If not, it is determined that the electromagnetic component is working abnormally.
8. The fresh-keeping storage control method according to claim 7, wherein after determining that the electromagnetic component is working abnormally, the method further comprises:

   Detecting the power supply parameters of the power supply device of the electromagnetic assembly;

   When the power supply parameter is abnormal, output a power supply abnormality prompt;

   When the power supply parameter is abnormal, suspend the power supply to the electromagnetic component, and re-supply power after a set period of time, and determine whether the electromagnetic component returns to normal, and the electromagnetic component has not returned to normal after repeating the set number of times , then output the abnormal prompt of the electromagnetic component.
9. The fresh-keeping storage control method according to claim 1, wherein the refrigerator is an air-cooled refrigerator, and the refrigeration assembly further includes an air supply device for supplying a cooling airflow to the fresh-keeping storage space; and

   In the process of forming the electromagnetic field required for auxiliary fresh-keeping in the fresh-keeping storage space, the air supply device also supplies the cooling airflow to the fresh-keeping storage space in a controlled manner, so that the fresh-keeping storage space The temperature remains within the temperature threshold range.
10. A refrigerator comprising:

    The magnetic field fresh-keeping storage container defines a fresh-keeping storage space inside;

    an electromagnetic component, configured to apply an electromagnetic field to the fresh-keeping storage space;

    a refrigeration component, configured to refrigerate the fresh-keeping storage space; and

    A controller, the controller comprising a memory and a processor, wherein the memory stores a machine-executable program, and when the machine-executable program is executed by the processor, the fresh-keeping storage control according to any one of claims 1 to 9 is realized method.

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