CN115704624A - Refrigerator and fresh-keeping storage control method thereof - Google Patents

Abstract

The invention provides a refrigerator and a fresh-keeping storage control method thereof, wherein the refrigerator comprises: the fresh-keeping storing container of magnetic field of injecing fresh-keeping storing space, be used for exerting the electromagnetic field to fresh-keeping storing space electromagnetic subassembly and be used for carrying out cryogenic refrigeration subassembly to fresh-keeping storing space to fresh-keeping storage control method includes: acquiring a starting event triggering the starting of the electromagnetic assembly; determining a temperature threshold range required by the fresh-keeping storage space for fresh-keeping storage; controlling the refrigeration assembly to refrigerate the fresh-keeping storage space to a temperature threshold range; and supplying power to the electromagnetic assembly to form an electromagnetic field required by auxiliary preservation in the preservation storage space. According to the scheme, refrigeration is completed in advance before the magnetic field is generated, and the phenomenon that the temperature of the fresh-keeping storage space is influenced by heat generated after the electromagnetic assembly is started is avoided. The magnetic field is helpful for improving the quality of stored articles, realizes fresh-keeping stored articles in the refrigerator, particularly the intelligent refrigerator, and meets the requirements of users on intelligent household appliances.

Description

Refrigerator and fresh-keeping storage control method thereof

Technical Field

The invention belongs to the technical field of preservation storage, and particularly provides a refrigerator and a preservation storage control method thereof.

Background

The user also attaches more and more importance to the fresh-keeping effect of refrigerator stores, and for edible materials such as meat, fish, shrimp, the problem that the juice runs off and causes that taste worsens, the colour darkens easily appears in the storage process. In particular, the quality of some high-grade food materials is greatly reduced after being stored for a period of time.

In order to improve the quality of the stored goods, more improvements have appeared in the prior art, such as increasing the freezing speed of the food by quick freezing or bringing the food into an overcooled state, which requires increasing the refrigerating capacity of the refrigerator and also leads to increased energy consumption of the refrigerator. Therefore, the technical problem to be solved urgently by refrigerator developers is to improve the quality of the frozen stored goods more efficiently.

The field of refrigerators actively explores introducing a magnetic field into fresh-keeping storage, however, in practical application of the refrigerator, because the fresh-keeping effect depends on multiple aspects such as temperature and magnetic field, the effect of magnetic field auxiliary fresh-keeping is not satisfactory, and in practical application, the phenomenon that temperature fluctuation is increased after the magnetic field is applied easily occurs, so that the freshness of food is reduced, and even the food is decayed.

Disclosure of Invention

An object of the present invention is to provide a refrigerator and a fresh-keeping storage control method thereof that effectively improve the magnetic field fresh-keeping effect.

The invention also aims to meet the preservation requirement of users and improve the use experience.

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

In order to achieve the above object, the present invention provides a fresh-keeping storage control method for a refrigerator, wherein the refrigerator comprises: prescribe fresh-keeping storing container in magnetic field of fresh-keeping storing space, be used for applying the electromagnetic subassembly of electromagnetic field to fresh-keeping storing space and be used for carrying out cryogenic refrigeration subassembly to fresh-keeping storing space to

The fresh-keeping storage control method comprises the following steps:

acquiring a starting event triggering the starting of the electromagnetic assembly;

determining a temperature threshold range required by the fresh-keeping storage space for fresh-keeping storage;

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

and supplying power to the electromagnetic assembly to form an electromagnetic field required by auxiliary preservation in the preservation storage space.

Optionally, the initiating event comprises:

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

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

The running state of the refrigerator reaches the preset fresh-keeping storage starting condition.

Optionally, before the step of acquiring a triggering event triggering the starting of the electromagnetic assembly, the method further includes:

confirm that the fresh-keeping storing container of magnetic field is in the closed condition to the refrigeration process to fresh-keeping storing space has been accomplished at least once to the refrigeration subassembly after the fresh-keeping storing container of magnetic field is closed.

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

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

judging whether the set temperature is in a preset initial freezing point temperature range, wherein the initial freezing point temperature range is set according to the freezing crystallization temperature in a magnetic field-free state;

and if so, acquiring a magnetic field freezing point temperature range, taking the magnetic field freezing point temperature range as a temperature threshold range, and setting the magnetic field freezing point temperature according to the pre-tested freezing crystallization temperature under the action of the magnetic field.

Optionally, the method further includes, in a case where the set temperature is outside the preset initial freezing point temperature range:

acquiring a preset temperature correction value;

and reducing the set temperature by a temperature correction value, and setting a temperature threshold range by using the obtained temperature value.

Optionally, the step of forming an electromagnetic field required for assisting preservation in the preservation storage space further includes:

acquiring the running state of the refrigerator;

and stopping supplying power to the electromagnetic assembly to stop forming the magnetic field after a preset magnetic field interruption condition occurs in the running state of the refrigerator.

Optionally, the step of supplying power to the electromagnetic assembly is further followed by:

detecting the magnetic field intensity of the fresh-keeping storage space by using a magnetic sensor in the magnetic field fresh-keeping storage container;

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

if not, the electromagnetic assembly is judged to be abnormal in work.

Optionally, after determining that the electromagnetic assembly is abnormal in operation, the method further includes:

detecting power supply parameters of a power supply device of the electromagnetic assembly;

outputting a power supply abnormity prompt under the condition that the power supply parameters are abnormal;

and under the condition that the power supply parameters are abnormal, the power supply to the electromagnetic assembly is suspended, the power supply is re-performed after the set time length, whether the electromagnetic assembly is recovered to be normal or not is determined, and the electromagnetic assembly is not recovered to be normal after the repeated set times, and the abnormal prompt of the electromagnetic assembly is output.

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

In the process of forming an electromagnetic field required for auxiliary fresh keeping in the fresh-keeping storage space, the air supply device also supplies refrigerating airflow to the fresh-keeping storage space in a controlled manner, so that the temperature of the fresh-keeping storage space is kept within the temperature threshold range.

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

the magnetic field freshness retaining storage container is internally provided with a freshness retaining storage space;

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

the refrigerating assembly is used for refrigerating the fresh-keeping storage space; and

and the controller comprises a memory and a processor, wherein the memory stores machine executable programs, and the machine executable programs realize any fresh-keeping storage control method when being executed by the processor.

Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, when a start event triggering the start of the electromagnetic assembly is obtained, that is, when the magnetic field needs to be started for freshness preservation, first a temperature threshold range required for freshness preservation and storage is obtained, and after the refrigeration assembly is controlled to refrigerate the freshness storage space to the temperature threshold range, power is supplied to the electromagnetic assembly to form an electromagnetic field required for freshness preservation. Before generating the magnetic field, accomplish the refrigeration in advance, avoid the temperature in fresh-keeping storing space of heat influence that the electromagnetism subassembly produced after starting. The magnetic field is helpful for improving the quality of stored food, shortening the freezing time, reducing the juice loss rate and nutrition loss of food, reducing the number of microorganisms and bacteria, and prolonging the preservation period.

Furthermore, the electromagnetic assembly can be started according to the instruction of a user, or can be automatically started according to the running states of stored objects and the refrigerator, so that different use requirements are met, the magnetic field preservation function can be comprehensively and flexibly started, and the use experience is improved.

Furthermore, according to the scheme of the invention, the temperature threshold range is corrected according to the influence of the magnetic field on the freezing point temperature, so that the storage temperature and the magnetic field coordinate to complete the preservation function, and the problem of temperature fluctuation caused by the magnetic field of the existing magnetic field preservation function is solved.

Furthermore, according to the scheme of the invention, the electromagnetic assembly automatically stops forming the magnetic field after the preset magnetic field interruption condition occurs in the running state of the refrigerator, so that the influence of the magnetic field on external parts of the refrigerator and other functions of the refrigerator is avoided.

Furthermore, the scheme of the invention can determine whether the electromagnetic assembly has a fault in time by detecting the electromagnetic assembly so as to prompt or process, thereby improving the reliability of magnetic field preservation.

Furthermore, the refrigerator adopting the technical scheme of the invention can form a magnetic field in the refrigerator, so that the storage quality of the refrigerator can be improved, a new fresh-keeping function is provided for the intelligent refrigerator, the increasingly improved use requirements of users on the intelligent refrigerator are met, and the quality of enjoying intelligent families and intelligent life of the users is improved.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly explain the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number are the same or similar in different figures; the drawings of the invention are not necessarily to scale relative to each other.

In the drawings:

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 one embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating the operation of a magnetic field freshness protection storage container according to an embodiment of the present invention;

fig. 4 is a schematic view of a fresh food storage control method of a refrigerator according to an embodiment of the present invention;

fig. 5 is a schematic view of magnetic field control in a freshness storage control method of a refrigerator according to an embodiment of the present invention; and

fig. 6 is a schematic view illustrating a magnetic field abnormality determination in a freshness storage control method of a refrigerator according to an embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic perspective view of a refrigerator 10 according to one embodiment of the present invention. The refrigerator 10 of the present embodiment may generally include a cabinet 12, a door 11, and a refrigeration system (not shown in the drawings). The housing 12 may define at least one, and typically a plurality of, open-front storage compartments, such as a refrigerated storage compartment, a frozen storage compartment, a variable-temperature storage compartment, and the like. The number and function of the specific storage compartments can be configured according to pre-determined requirements.

Since the refrigerator body 12 and the door 11 themselves are well known and easily implemented by those skilled in the art, the details of the refrigerator body 12, the door 11, and the refrigeration system themselves are not described below in order to not obscure and obscure the invention of the present application.

A magnetic field freshness retaining storage container 200 may be disposed inside one or more storage compartments of the refrigerator 10. When placed in the freezing storage chamber, the magnetic field fresh-keeping storage container 200 can be used for freezing and keeping fresh of frozen food materials, inhibiting the growth of ice crystal nuclei, enabling the growth rate of the ice crystals to be higher than the migration rate of water molecules, and enabling the generated ice crystals to be smaller, so that damage to cells is reduced, juice loss is avoided, the freezing process is accelerated, and the freezing time is shortened. When the magnetic field freshness preservation storage container 200 is placed in a cold storage chamber, the speed of oxidation-reduction reaction of food materials can be reduced, the loss of nutrition and moisture is reduced, the food materials are prevented from changing color, the growth of bacteria is inhibited, and the freshness preservation period of the food materials is prolonged. The magnetic field freshness retaining storage container 200 may be disposed in a refrigerating storage compartment, a freezing storage compartment, or a temperature-varying storage compartment, and may be used for magnetic field assisted freshness retaining in the storage compartments, or may be used as an independent compartment of the refrigerator 10.

The number of the magnetic field freshness retaining storage containers 200 and the storage compartments arranged therein may be configured according to the user's needs. For example, one or more magnetic field fresh food containers 200 may be disposed within 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 through the control of 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, and the refrigerator 10 may include: the electromagnetic assembly 230, the refrigeration assembly 320, the controller 310, in addition, can be further provided with selectively: a storage temperature sensor 330, an opening and closing detector 340 and a man-machine interaction interface 350.

The electromagnetic assembly 230 may include one or more coils, which may be shaped as a flat plate to mate with the sidewalls of the magnetic freshness retaining container 200, and a power supply to power the coils. The coil has a corresponding waterproof structure, for example, a cable which is covered and protected inside by a varnish, a plastic seal, a sealing ring or a sealing shell, and is integrally formed into a flat ring shape. The power supply device is used for controllably supplying power to the coil, and the stability of power supply voltage and power supply current is guaranteed. 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, for example, the coil can be selectively placed on the left and right sides, the top and bottom sides, or the front and back sides of the magnetic field fresh-keeping storage container 200.

In the case that the magnetic field fresh-keeping storage container 200 is flat as a whole, especially in the case that the magnetic field fresh-keeping storage container 200 is in the form of a drawer, the coils in the electromagnetic assembly 230 may be preferentially arranged to be disposed at both sides of the top and bottom of the cylinder 210. The magnetic field formed by the magnetic freshness storage container 200 penetrates through the freshness storage space from top to bottom or from bottom to top.

The refrigerating assembly 320 may be a refrigerating cycle system composed of a compressor, a condenser, a throttling device, an evaporator, and the like. The evaporator is configured to provide cooling directly or indirectly to the storage compartment. The refrigerator 10 of the present embodiment may be an air-cooled refrigerator, in which an air path system is disposed in the cabinet 12, and a fan sends a cooling air flow, which has been subjected to heat exchange by the evaporator, to the storage compartment through the air supply opening, and then returns to the air duct through the air return opening. And refrigeration is realized.

The controller 310 may be a main control device of the refrigerator 10, and is used for controlling the refrigeration assembly 320, the electromagnetic assembly 230, and the like. The controller 310 may include a processor 312, a memory 311. The memory 311 stores a machine-executable program that, when executed by the processor 312, implements any of the freshness storage control methods of the present embodiment. The machine-executable program may be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages.

The storage temperature sensor 330 is used for keeping the storage temperature in the storage space fresh. The opening/closing detector 340 is used to detect the opening/closing state of the magnetic field fresh-keeping storage container 200. The detection means of the storage temperature sensor 330 and the open/close detector 340 are known by those skilled in the art, and the corresponding implementation manner can be selected according to the detection requirement, for example, the storage temperature sensor 330 is implemented by selecting an infrared temperature measuring element, a thermocouple, etc., and the open/close detector 340 is implemented by using a hall device, a contact switch, etc.

The human-computer interaction interface 350 may be formed using a touch screen or other input/output components for receiving commands input by a user and outputting related information.

The storage object detecting sensor 360 is used for detecting the placement of the stored objects in the fresh-keeping storage space, and can determine whether the stored objects are placed in the fresh-keeping storage space through a weight detecting device, an infrared detecting device, an image recognizing device, and the like, and further determine the amount, weight, types, and the like of the stored objects.

The magnetic sensor 370 is used to detect the magnetic field intensity in the fresh-keeping storage space, which can be implemented by using a sensing coil, a magnetic sensor element, and a hall element to determine the magnitude of the magnetic field intensity.

Fig. 3 is a schematic diagram of the operation of the magnetic field freshness protection storage container 200 according to an embodiment of the present invention. In some embodiments of the invention, as shown in fig. 3, the cabinet 100 includes an evaporator compartment 110, a supply air duct 120, a return air duct 130, and a storage compartment (not shown). Wherein the evaporator compartment 110 and the storage compartment are communicated with each other through the supply passage 120 and the return passage 130 to circulate air between the evaporator compartment 110 and the storage compartment. The magnetic field freshness retaining storage container 200 is disposed in the storage compartment. The evaporator chamber 110 is used for arranging the evaporator 300 to exchange heat with the evaporator 300 through airflow to form a refrigerant airflow.

The blower 400 is used for driving air to circularly flow in the evaporator chamber 110, the air supply channel 120, the storage compartment and the return air channel 130, so that air cooling circulation is realized.

The magnetic freshness retaining storage container 200 may be a drawer structure, that is, may include a barrel 210, a drawer 220, an electromagnetic assembly 230, and an air inlet duct assembly 240. Wherein the drawer 220 is slidably mounted in the cylinder 210 for placing the stored objects. The electromagnetic assembly 230 is used to provide a magnetic field to the stored items in the drawer 220. The air inlet duct assembly 240 is configured such that cool air is first blown into the drum 210 to cool the electromagnetic assembly 230 and then blown to the stored objects.

The front side of the cartridge 210 has an opening 211, which allows the drawer 220 to be inserted into the cartridge 210, such that the drawer 220 is slidably mounted into the cartridge 210. A return air inlet communicating with the return air duct 130 is further provided to the drum 210 to introduce the air inside the drum 210 into the return air duct 130. The air return opening may be provided at the left, right, lower, or upper side of the drum 210.

The drawer 220 has a front cover 221, and when the drawer 220 is slid into the cylindrical body 210, the front cover 221 abuts against the front end of the cylindrical body 210, and a gap is provided between the front cover 221 and the frame body at the front end of the cylindrical body 210.

The electromagnetic assembly 230 may be disposed outside the barrel 210 to facilitate the fixing and wiring of the electromagnetic assembly 230. Of course, the electromagnetic assembly 230 may be disposed inside the cylinder 210 as needed by those skilled in the art.

The electromagnetic assembly 230 may include a top coil 231 on a top side of the barrel 210 and a bottom coil 232 on a 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 after being powered on can cover the drawer 220, 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 be 1Gs-100Gs, and in the case of being applied to a freezing environment, the magnetic field intensity range can preferably adopt 5-60 GS, for example, about 20Gs can be selected; in the case of application to a refrigerated environment, the magnetic field strength may range from 20 to 160GS, preferably from 40 to 80Gs, for example around 60 Gs. The magnetic field intensity of the magnetic field can be a stable value, namely the magnetic field is stable in a certain range after the application environment is determined.

The air intake duct assembly 240 includes a top baffle 241, a bottom baffle 242, and an air duct 243. The top baffle 241 is covered outside the top coil 231 and forms a top air duct 250 with the top wall of the cylinder 210. The bottom baffle 242 covers the outside of the bottom coil 232 and forms a bottom air duct 260 with the bottom wall of the cylinder 210. The air guide pipe 243 is fixedly arranged at the rear part of the cylinder 210, the top of the air guide pipe 243 is provided with an air inlet, the air guide pipe 243 is communicated with the air supply channel 120 through the air inlet, and the air guide pipe 243 is also communicated with the top air channel 250 and the bottom air channel 260 respectively. The air duct 243 guides the cool air in the air supply passage 120 to the top air duct 250 and the bottom air duct 260.

On the premise that the cool air in the air supply channel 120 can be guided into the top air duct 250 and the bottom air duct 260, those skilled in the art may omit the air guide pipe 243 as needed. For example, the top air duct 250 and the bottom air duct 260 are directly communicated with the air supply passage 120, and the magnetic field fresh-keeping storage container 200 further includes a sleeve covering the outer sides of the cylinder 210, the top baffle 241 and the bottom baffle 242, so that the inner cavity of the sleeve is in distributed communication with the top air duct 250 and the bottom air duct 260, and an air inlet communicated with the air supply passage 120 is disposed on the sleeve.

In other embodiments of the present invention, a person skilled in the art may also set an air door at an air outlet of the air supply duct 120 or on the air guide pipe 243 (specifically, at a position close to an air inlet thereof) as required, and adjust the air door to control whether the cool air in the air supply duct 120 flows to the top air duct 250 and the bottom air duct 260, or adjust the air door to control the speed of the cool air in the air supply duct 120 flowing to the top air duct 250 and the bottom air duct 260.

The top air duct 250 also communicates with the cylinder 210. Specifically, the top air duct 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 duct 250 blows cool air to the front cover 221, and the cool air is turned back into the drawer 220. More specifically, the top outlet 251 is formed on a frame at the front end of the barrel 210.

The bottom duct 260 also communicates with the cylinder 210. Specifically, the bottom duct 260 has a bottom outlet 261, and the bottom outlet 261 is formed on the bottom wall of the cylinder 210. The bottom air duct 260 blows cool air through the bottom air outlet 261 thereof to the bottom wall of the drawer 220.

From the above description, those skilled in the art can easily realize that the coils of the electromagnetic assembly 230 are disposed on the left and right sidewalls of the magnetic field freshness storage container 200, and the corresponding air inlet channel and air return channel are disposed at the left and right sidewalls.

Based on the foregoing description, it can be understood by those skilled in the art that the magnetic field freshness protection storage container 200 of the present invention can prevent cold air from directly blowing the stored objects in the drawer 220, so as to prevent the stored objects from being frozen. Meanwhile, due to the arrangement of the electromagnetic assembly 230, the magnetic field generated by the electromagnetic assembly 230 can greatly influence the formation of ice crystals in the freezing process, and the freezing temperature of the stored object is reduced. Thereby allowing the stored items to be preserved at lower temperatures without freezing. Therefore, the air-cooled refrigeration equipment and the magnetic field fresh-keeping storage container 200 can effectively avoid the situation that the stored objects are frozen.

Fig. 4 is a schematic view of a freshness storage control method of a refrigerator according to an embodiment of the present invention. The fresh-keeping storage control method of the refrigerator comprises the following steps:

in step S402, a start event triggering the start of the electromagnetic assembly 230 is acquired. The start time may include: the human-computer interaction interface 350 of the refrigerator receives a magnetic field opening instruction input by a user; and/or the storage object detection sensor 360 in the magnetic field freshness retaining storage container 200 detects that the stored object is placed in the freshness retaining storage space; and/or the operational state of the refrigerator 10 reaches a preset freshness storage start condition.

The human-computer interface 350 of the refrigerator may be provided with an input interface or an operation button for receiving a magnetic control instruction (a magnetic field on instruction and/or a magnetic field off refrigeration), and a user of the refrigerator may manually turn on a magnetic field fresh-keeping function. After receiving the magnetic control instruction of the user, the refrigerator 10 starts the magnetic field fresh-keeping function, and feeds back the magnetic field fresh-keeping function to the user through a display screen or the like.

After the storage object detection sensor 360 detects that the stored objects are placed in the fresh-keeping storage space, the refrigerator 10 can automatically start the magnetic field fresh-keeping function, so that automatic fresh keeping is realized. For example, an infrared sensor is used for detecting whether food is known in the fresh-keeping storage space, and if the food exists, the magnetic field is started.

The above-mentioned fresh-keeping storage starting condition may be other conditions that can start the magnetic fresh-keeping function, for example, specific fresh-keeping storage conditions such as the magnetic 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 may be set according to the function and the operating state of the refrigerator 10 and the fresh-keeping requirement of the user.

Before the step of acquiring the triggering event triggering the starting of the electromagnetic assembly 230, the method may further include: it is determined that the magnetic field freshness protection storage container 200 is in a closed state, that is, a state where the freshness protection storage space is closed, or a closed state, and the refrigerating assembly 320 completes at least one refrigerating process of the freshness protection storage space after the magnetic field freshness protection storage container 200 is closed. That is, the magnetic field only allows for starting when the magnetic freshness storage container 200 is closed and a refrigeration process has been completed (for air-cooled refrigeration, that is, the fan 400, evaporator 300, etc. have completed a start-stop process). The condition can ensure that the fresh-keeping storage space is in a stable storage state, and even if the electromagnetic assembly 230 generates heat, the storage temperature cannot be greatly fluctuated.

And S404, determining a temperature threshold range required by the freshness storage space for freshness storage. The temperature threshold range can be set according to the set temperature of the magnetic field freshness protection storage container 200 and the freshness protection storage effect tested in advance. For example, step S404 may include: acquiring the set temperature of the magnetic field fresh-keeping storage container 200; judging whether the set temperature is within a preset initial freezing point temperature range, wherein the initial freezing point temperature range is set according to the freezing crystallization temperature in a magnetic field-free state; and if so, acquiring a magnetic field freezing point temperature range, taking the magnetic field freezing point temperature range as a temperature threshold range, and setting the magnetic field freezing point temperature according to the pre-tested freezing crystallization temperature under the action of the magnetic field. The initial freezing point temperature may be a temperature at which moisture in a stored material is frozen and crystallized in the absence of a magnetic field (i.e., a freezing crystallization temperature), and may be, for example, -1 ℃ to 0 ℃. If the set temperature of the magnetic field freshness protection storage container 200 is in the range of-1 ℃ to 0 ℃, it indicates that the stored object needs to be maintained in a non-frozen critical state. It has been proved that the freezing temperature (freezing temperature) of the stored object is lowered after the magnetic field is applied. Therefore, the freezing temperature of the stored object under the action of the magnetic field can be tested in advance, for example, the freezing temperature of the magnetic field can be set to be-4 ℃ to-2 ℃. The setting mode can ensure that the stored objects are kept in a required critical state, and the storage quality is improved.

In consideration of the moisture content and the moisture distribution mode of different stored objects and the freezing and crystallizing temperatures of the stored objects, the method can also be used for respectively performing pre-testing according to the types of the stored objects, determining the magnetic field freezing point temperature ranges of different types of stored objects, identifying the types of the stored objects before starting the magnetic field, and inquiring the corresponding magnetic field freezing point temperature ranges according to the types of the stored objects, so that more targeted control is realized.

The method can further comprise the following steps when the set temperature is out of the preset initial freezing point temperature range: acquiring a preset temperature correction value; and reducing the set temperature by a temperature correction value, and setting a temperature threshold range by using the obtained temperature value. That is, the temperature setting of the fresh food storage space is not at a critical non-freezing temperature, and it is necessary to store food at a higher or lower temperature. It is contemplated that the electromagnetic assembly 230 may generate heat upon application of the magnetic field to avoid such heat affecting the storage temperature, causing the storage temperature to fluctuate. The method of this embodiment may preset a temperature correction value, for example, 3 ℃, 2 ℃ or 4 ℃, and then reduce the temperature of the fresh-keeping storage space by the temperature correction value. For example, when the magnetic field is required to keep fresh in a frozen state, the freezing set temperature is-18 ℃, and when the magnetic field is applied, the temperature threshold range can be set to-22 ℃ to-20 ℃. For another example, setting the temperature to 5 ℃ which is a refrigerating temperature higher than the freezing point, the temperature threshold range may be set to 1 ℃ to 3 ℃.

Step S406, controlling the refrigerating assembly 320 to refrigerate the fresh-keeping storage space to a temperature threshold range. Before the magnetic field is applied, the temperature of the fresh-keeping storage space is refrigerated to a required temperature range, so that the temperature fluctuation after the magnetic field is started can be reduced.

Step S408, power is supplied to the electromagnetic assembly 230 to form an electromagnetic field for assisting preservation in the preservation storage space. The intensity range of the magnetic field can be set to be 1Gs-100Gs, and in the case of being applied to a freezing environment, the magnetic field intensity range can preferably adopt 5-60 GS, for example, about 20Gs can be selected; in the case of application to a refrigerated environment, the magnetic field strength may range from 20 to 160GS, preferably from 40 to 80Gs, for example around 60 Gs. The magnetic field strength of the magnetic field can be a stable value, that is, the magnetic field is always stable within a certain range after the application environment is determined.

After the step of forming the electromagnetic field required for auxiliary fresh keeping in the fresh-keeping storage space in step S408, the method further includes: acquiring an operation state of the refrigerator 10; after a predetermined magnetic field interruption condition occurs in the operational state of the refrigerator 10, power supply to the electromagnetic assembly 230 is stopped to stop the formation of the magnetic field. The above-described operation states may include operation parameters of the refrigerator 10, component action states, and the like. The magnetic field interruption condition may be set according to the influence of the magnetic field, for example, in the defrosting process of the evaporator 300, the refrigeration cannot be performed, the temperature in the fresh-keeping storage space may increase to a certain extent, and the magnetic field needs to be interrupted in order to reduce the temperature increase. For example, when the refrigerator door is opened, on the one hand, the temperature is affected by the entry of external moist high-temperature air, and on the other hand, the magnetic field can also have a magnetizing effect on external parts, in particular items such as watches which are sensitive to magnetic fields. In this case too, the magnetic field needs to be interrupted. That is, the method of the present embodiment may stop supplying power to the electromagnetic assembly 230 when the refrigerator 10 is opened, the evaporator 300 is defrosted, or other conditions affecting the temperature or the magnetic field. After the special condition is finished, the magnetic field control is performed again according to the process from step S402 to step S408.

After the step of supplying power to the electromagnetic assembly 230, the magnetic sensor 370 in the magnetic freshness storage container 200 can be used to detect the magnetic field strength of the freshness storage space; judging whether the magnetic field intensity is within a preset threshold range; if not, the electromagnetic assembly 230 is determined to be operating abnormally. That is, the magnetic sensor 370 is used to determine whether the electromagnetic assembly 230 is operating normally, so as to determine an abnormal state in time, thereby improving the reliability of the electromagnetic assembly 230.

The power supply parameter of the power supply device of the electromagnetic assembly 230 can be detected after the electromagnetic assembly 230 is judged to be abnormally operated; and outputting a power supply abnormity prompt when the power supply parameters are abnormal. And under the condition that the power supply parameter is abnormal, the power supply to the electromagnetic assembly 230 is suspended, the power supply is restarted after the set time length, whether the electromagnetic assembly 230 is normal or not is determined, and if the electromagnetic assembly 230 is not normal after the set number of times of repetition, an abnormal prompt of the electromagnetic assembly 230 is output. Namely, under the condition that the magnetic field is abnormal, whether the abnormal reason is power supply or a coil is determined, partial fault is automatically recovered through restarting, if the abnormal reason cannot be eliminated through restarting, an abnormal prompt is output, and a prompt for after-sales maintenance is output through a display screen or other interactive modes.

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

step S502, determining whether the refrigerator 10 is defrosting;

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

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

step S508, determining whether the cooling module 320 has finished cooling at least once;

step S510, determining whether the electromagnetic assembly 230 is abnormal;

step S512, electrifying the electromagnetic assembly 230 and maintaining the storage temperature within a set temperature threshold range;

step S514, the magnetic field is turned off.

Through the process, before the magnetic field is generated, refrigeration is completed in advance, and the phenomenon that the temperature of the fresh-keeping storage space is influenced due to heat generation after the electromagnetic assembly 230 is started is avoided. And the electromagnetic assembly 230 automatically stops forming the magnetic field after a preset magnetic field interruption condition occurs in the operation state of the refrigerator 10, so as to prevent the magnetic field from affecting external components of the refrigerator and other functions of the refrigerator.

Fig. 6 is a schematic view illustrating a magnetic field abnormality determination in a freshness storage control method of a refrigerator according to an embodiment of the present invention. The magnetic field abnormality determination process includes:

step S602, determining whether the power supply of the electromagnetic assembly 230 is normal, that is, whether the power supply voltage and the power supply current are both within a proper range;

step S604, determining 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 power-off times exceed the limit, namely whether the restart times exceed the threshold;

step S608, if the magnetic field intensity is abnormal and the power-off frequency is not over-limit, the power-off setting time is continued;

step S610, the electromagnetic assembly 230 is powered off again;

step S612, clearing the abnormal mark and maintaining the coil to be electrified;

and step S614, powering off, setting an abnormal identifier and outputting an abnormal prompt.

According to the scheme of the embodiment, whether the fault occurs can be determined in time by detecting the electromagnetic assembly 230 so as to prompt or process, and the reliability of magnetic field preservation is improved.

So far, the technical solutions of the present invention have been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without departing from the technical principle of the present invention, a person skilled in the art may split and combine the technical solutions in the above embodiments, and may make equivalent changes or substitutions for related technical features, and any changes, equivalents, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.

Claims (10)

1. A freshness-preservation storage control method of a refrigerator, the refrigerator comprising: the fresh-keeping storage control method comprises the following steps of defining a magnetic field fresh-keeping storage container of a fresh-keeping storage space, an electromagnetic assembly used for applying an electromagnetic field to the fresh-keeping storage space, and a refrigerating assembly used for refrigerating the fresh-keeping storage space, wherein the fresh-keeping storage control method comprises the following steps:

acquiring a starting event triggering the starting of the electromagnetic assembly;

determining a temperature threshold range required by the fresh-keeping storage space for fresh-keeping storage;

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

and supplying power to the electromagnetic assembly so as to form an electromagnetic field required by auxiliary freshness preservation in the freshness preservation storage space.

2. The freshness storage control method of claim 1, wherein the start event comprises:

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

A storage object detection sensor in the magnetic field freshness retaining storage container detects that stored objects are placed in the freshness retaining storage space; and/or

The running state of the refrigerator reaches the preset fresh-keeping storage starting condition.

3. The fresh-keeping storage control method of claim 1, wherein prior to the step of acquiring a triggering event that triggers activation of the solenoid assembly further comprises:

and confirming that the magnetic field freshness preservation storage container is in a closed state, and completing at least one refrigeration process of the freshness preservation storage space by the refrigeration assembly after the magnetic field freshness preservation storage container is closed.

4. The fresh-keeping storage control method of claim 1, wherein the step of determining the temperature threshold range required for fresh-keeping storage of the fresh-keeping storage space comprises:

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

judging whether the set temperature is in a preset initial freezing point temperature range or not, wherein the initial freezing point temperature range is set according to the freezing crystallization temperature in a magnetic field-free state;

and if so, acquiring a magnetic field freezing point temperature range, taking the magnetic field freezing point temperature range as the temperature threshold range, and setting the magnetic field freezing point temperature according to the pre-tested freezing crystallization temperature under the action of the magnetic field.

5. The freshness storage control method according to claim 4, wherein

The method further comprises the following steps when the set temperature is out of the preset initial freezing point temperature range:

acquiring a preset temperature correction value;

and reducing the set temperature by the temperature correction value, and setting the temperature threshold range by using the obtained temperature value.

6. The freshness storage control method according to claim 1, wherein the step of forming an electromagnetic field required for auxiliary freshness preservation in the freshness storage space further comprises:

acquiring the running state of the refrigerator;

and after a preset magnetic field interruption condition occurs in the running state of the refrigerator, stopping supplying power to the electromagnetic assembly to stop forming the magnetic field.

7. The fresh-keeping storage control method of claim 1, wherein the step of powering the electromagnetic assembly is further followed by:

detecting the magnetic field intensity of the fresh-keeping storage space by using a magnetic sensor in the magnetic field fresh-keeping storage container;

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

if not, judging that the electromagnetic assembly works abnormally.

8. The fresh-keeping storage control method according to claim 7, further comprising, after determining that the electromagnetic assembly is malfunctioning:

detecting a power supply parameter of a power supply device of the electromagnetic assembly;

outputting a power supply abnormity prompt under the condition that the power supply parameters are abnormal;

and under the condition that the power supply parameters are abnormal, stopping supplying power to the electromagnetic assembly, re-supplying power after a set time length, determining whether the electromagnetic assembly is recovered to be normal or not, and outputting an electromagnetic assembly abnormal prompt if the electromagnetic assembly is not recovered to be normal after repeated set times.

9. The freshness storage control method according to claim 1, wherein the refrigerator is an air-cooled refrigerator, and the cooling assembly further comprises an air supply device for supplying a flow of cooling air to the freshness storage space; and is

In the process of forming an electromagnetic field required for auxiliary fresh keeping in the fresh-keeping storage space, the air supply device also supplies the refrigerating airflow to the fresh-keeping storage space in a controlled manner, so that the temperature of the fresh-keeping storage space is kept within the temperature threshold range.

10. A refrigerator, comprising:

the magnetic field freshness retaining storage container is internally provided with a freshness retaining storage space;

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

the refrigerating assembly is used for refrigerating the fresh-keeping storage space; and

a controller comprising a memory and a processor, wherein the memory stores a machine executable program which when executed by the processor implements a freshness storage control method according to any one of claims 1 to 9.

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