WO2023109517A1 - Refrigerator having magnetic field-based food preservation function, and control method thereof - Google Patents

Abstract

A refrigerator having a magnetic field-based food preservation function and a control method thereof. The refrigerator comprises: a box body which defines refrigeration chambers, a magnetic field-based food preservation device which is arranged in the refrigeration chambers, and a refrigeration evaporator for refrigerating the refrigeration chambers. The control method comprises: respectively acquiring the temperature of the magnetic field-based food preservation device and the temperature of the external refrigeration space of the magnetic field-based food preservation device, so as to obtain a food preservation detection temperature and a refrigeration detection temperature; after any of the food preservation detection temperature and the refrigeration detection temperature is greater than a preset refrigeration startup temperature, controlling the refrigeration evaporator to start refrigeration; and then starting a magnetic field assembly of the magnetic field-based food preservation device to apply a magnetic field to a preservation space in the magnetic field-based food preservation device. According to the scheme, the magnetic field assembly is cooled in the refrigeration process to prevent heat from affecting the food preservation space or the refrigeration space, thereby improving the quality of preservation, extending the application time of the magnetic field as much as possible, and enhancing the food preservation effects of the magnetic field.

Description

Refrigerator with magnetic field preservation function and control method thereof technical field

The invention relates to refrigerating and freezing equipment, and specifically provides a refrigerator with a magnetic field preservation function and a control method thereof.

Background technique

Now studies have found that magnetic fields can inhibit the growth of microorganisms and molds and prolong the storage period of food materials. Therefore, the magnetic field can be used to assist in the storage of foodstuffs, thereby achieving the purpose of extending the storage period of foodstuffs. When using a magnetic field to assist food storage, the magnetic field restricts the free path of water molecules to a certain extent, which is specifically manifested as the breaking of hydrogen bonds in the water molecule cluster. During the phase transition process of water, the growth of crystal nuclei is inhibited, the growth rate of ice crystals is higher than the migration rate of water molecules, and the resulting ice crystals are smaller, which causes less damage to cells and reduces the loss rate of juice in food materials. So that the nutrition and taste of the ingredients can be better preserved.

Existing magnetic field fresh-keeping devices generally use electromagnetic devices to apply a magnetic field. Since heat is generated during the process of generating a magnetic field by the electromagnetic device, this will lead to increased temperature fluctuations in the fresh-keeping space, resulting in a decrease in storage quality. In some cases, the refrigerating system of the refrigerator is frequently activated, resulting in increased energy consumption and even shortening the service life of the refrigerator.

Contents of the invention

An object of the present invention is to reduce the influence of the heat generated during the application of the magnetic field on the temperature of the fresh-keeping space.

A further object of the present invention is to make the temperature of the fresh-keeping space of the magnetic field fresh-keeping device uniform.

In order to achieve the above object, the present invention provides a method for controlling a refrigerator with a magnetic field preservation function. The refrigerator includes: a box body defining a refrigerated compartment, and a magnetic field preservation device arranged in the refrigerated compartment for cooling the refrigerated compartment. refrigerated evaporators, and control methods include:

Obtaining the temperature of the magnetic field fresh-keeping device and the external refrigerated space of the magnetic field fresh-keeping device respectively, and obtaining the fresh-keeping detection temperature and the refrigerating detection temperature;

After any one of the preservation detection temperature and the refrigeration detection temperature is greater than the preset refrigeration start-up temperature, the refrigeration evaporator is controlled to start refrigeration, and then the magnetic field component of the magnetic field preservation device is activated to apply a magnetic field to the freshness preservation space inside the magnetic field preservation device.

Optionally, the refrigerated room adopts air-cooled refrigeration, the back of the refrigerated room is provided with a refrigerated air channel, the magnetic field fresh-keeping device is provided with a fresh-keeping air channel surrounding the fresh-keeping space, and the refrigerated evaporator is arranged in the refrigerated air channel;

The refrigerator also includes: a fresh-keeping air door for connecting or disconnecting the connection between the refrigerating air duct and the fresh-keeping air duct, a refrigerating air door for connecting or disconnecting the connection between the refrigerating air duct and the external refrigerating space of the magnetic field fresh-keeping device, and a After the step of promoting the formation of the refrigerating fan that supplies the airflow from the refrigerating air duct to the fresh-keeping air duct and/or the refrigerating space, and controlling the refrigerating evaporator to turn on refrigeration, it also includes:

Open the refrigerating fan, the fresh-keeping air door, and the refrigerating air door to provide cooling airflow to the fresh-keeping air duct and the refrigerating space outside the magnetic field fresh-keeping device.

Optionally, after the step of turning on the refrigeration of the refrigerating evaporator, the method further includes:

Continuous detection of fresh-keeping detection temperature and refrigeration detection temperature;

Comparing the freshness detection temperature and refrigeration detection temperature with the preset refrigeration shutdown temperature respectively;

In the case that the freshness detection temperature and the refrigeration detection temperature are both less than or equal to the shutdown temperature of the refrigeration, the refrigeration evaporator is controlled to turn off refrigeration, and the magnetic field assembly is turned off after a delay after the refrigeration evaporator turns off refrigeration.

Optionally, when the refrigerating evaporator is turned off for refrigeration and the magnetic field assembly is still open, the refrigerating air door is closed, and the refrigerating fan and the fresh air door are kept open; after the magnetic field assembly is closed, the refrigerating fan and the fresh air door are closed.

Optionally, after the step of comparing the fresh-keeping detected temperature and the refrigerated detected temperature with the preset refrigerated shutdown temperature, the step further includes:

When the freshness detection temperature is less than or equal to the refrigerating shutdown temperature and the refrigerating detection temperature is greater than the refrigerating shutdown temperature, the freshness preservation damper is closed, and the refrigeration evaporator is kept cooling, the refrigeration fan is turned on, and the refrigeration damper is opened;

When the refrigerating detection temperature is less than or equal to the refrigerating shutdown temperature and the freshness detection temperature is greater than the refrigerating shutdown temperature, the refrigerating damper is closed, and the refrigerating evaporator is kept cooling, the refrigerating fan is turned on, and the freshness damper is opened.

Optionally, a freezer compartment is also defined in the box, and the refrigerator further includes a freezer evaporator for cooling the freezer compartment, a solenoid valve for switching refrigerant supply to the freezer evaporator and/or freezer evaporator, and controlling After the refrigerated evaporator is turned off for refrigeration also includes:

Obtain the temperature of the freezing compartment to obtain the freezing detection temperature;

Compare the freeze detection temperature with the preset freeze shutdown temperature;

If the freezing detection temperature is greater than the freezing shutdown temperature, the solenoid valve is controlled to supply the refrigerant to the freezing evaporator to cool the freezing compartment.

Optionally, after the step of comparing the freezing detection temperature with the preset freezing shutdown temperature, the method further includes:

If the freezing detection temperature is less than or equal to the freezing shutdown temperature, the compressor of the refrigerator is controlled to stop, and the freezing evaporator is stopped to refrigerate the freezing compartment.

Optionally, when the refrigerating evaporator is turned off for cooling and the refrigerating evaporator is turned on for cooling, the refrigerating damper is closed, and the refrigerating fan is turned on and the fresh-keeping damper is kept open.

Optionally, after closing the magnetic field assembly, the refrigeration fan, and the fresh-keeping damper, it further includes: controlling the refrigeration fan and the fresh-keeping damper to start at preset intervals, so as to make the air inside the magnetic field fresh-keeping device flow.

According to another aspect of the present invention, there is also provided a refrigerator with a magnetic field preservation function, which includes:

The box body has a refrigerated compartment inside;

The magnetic field fresh-keeping device is arranged in the cold storage room;

a refrigeration system comprising a refrigerated evaporator for cooling the refrigerated compartment;

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 control methods is realized.

Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solutions of the present invention, the magnetic field fresh-keeping device is arranged in the refrigerating compartment of the refrigerator, and the fresh-keeping space inside the magnetic field fresh-keeping device and The external refrigerated space of the magnetic field fresh-keeping device is refrigerated. When the freshness detection temperature or the refrigeration detection temperature is greater than the refrigeration start-up temperature, after the refrigeration chamber is turned on for cooling, the magnetic field component of the magnetic field preservation device is controlled to start, and a magnetic field is applied to the freshness preservation space inside the magnetic field preservation device. During the cooling process, the magnetic field components are cooled at the same time to prevent heat from affecting the fresh-keeping space or the cold storage space, thereby improving the storage quality.

Further, the refrigerator with magnetic field fresh-keeping function and its control method of the present invention adopts air-cooling method for refrigeration, and the magnetic field fresh-keeping device is provided with a fresh-keeping air duct surrounding the fresh-keeping space, and the temperature of the fresh-keeping space can be made more uniform by using the cooling air flow, so that the magnetic field Components dissipate heat more efficiently. The magnetic field component is linked with the fan and damper for linkage control.

Furthermore, in the refrigerator with magnetic field preservation function and its control method of the present invention, after the cooling of the refrigerated compartment is completed, the magnetic field assembly is turned off in a delayed manner, and the residual temperature in the refrigerating evaporator and the refrigerating air duct is used to dissipate heat from the magnetic field assembly, thereby The magnetic field component prolongs the application time of the magnetic field and improves the freshness preservation effect of the magnetic field.

Furthermore, the refrigerator with magnetic field preservation function and the control method thereof of the present invention avoid frequent startup and shutdown of the refrigeration system by coordinating the refrigeration of the freezer compartment and the refrigerator compartment, reduce energy consumption, and improve the reliability of the refrigeration system.

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 diagram of a storage compartment of a refrigerator with a magnetic field preservation function according to an embodiment of the present invention;

Fig. 2 is an internal side sectional view of a refrigerator with a magnetic field preservation function according to an embodiment of the present invention;

3 is a schematic diagram of a magnetic field fresh-keeping device in a refrigerator with a magnetic field fresh-keeping function according to an embodiment of the present invention;

4 is a schematic diagram of a magnetic field assembly in a refrigerator with a magnetic field preservation function according to an embodiment of the present invention;

Fig. 5 is a schematic block diagram of a refrigeration system of a refrigerator with a magnetic field preservation function according to an embodiment of the present invention;

Fig. 6 is a schematic block diagram of a control part in a refrigerator with a magnetic field preservation function according to an embodiment of the present invention;

7 is a schematic diagram of a control method for a refrigerator with a magnetic field preservation function according to an embodiment of the present invention; and

Fig. 8 is a schematic diagram of an execution flow of a control method of a refrigerator with a magnetic field preservation function according to an embodiment of the present invention.

Detailed ways

It should be understood by those skilled in the art that the embodiments described below are only some of the embodiments of the present invention, rather than all embodiments of the present invention. To limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts should still fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", " Terms indicating directions or positional relationships such as "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, in order to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention. Furthermore, the terms "first", "second", "third", "primary" and "secondary" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, or it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

This embodiment provides a refrigerator 10 with a magnetic field preservation function. The refrigerator of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a storage compartment of a refrigerator 10 with a magnetic field preservation function according to an embodiment of the present invention; Fig. 2 is an internal side sectional view of the refrigerator 10 with a magnetic field preservation function according to an embodiment of the present invention. The refrigerator 10 may include: a box body 101 and a door body 102 . The box body 101 may define at least one storage compartment with an open front side, usually a plurality of them, such as a refrigerated compartment 12, a freezer compartment 13, a variable temperature compartment, and the like. The number and functions of the specific storage compartments can be configured according to the prior requirements. The number and functions of the specific storage compartments can be configured according to the advance requirements. In some embodiments, the storage temperature of the refrigerated compartment 12 can be 2-9°C, or 4-7°C; The storage temperature can be -22～-14℃, or can be -20～16℃. The set temperature of the variable temperature compartment can be adjusted according to needs to store suitable food.

The positions and locations of the storage compartments shown in the above drawings are only examples, and those skilled in the art can make adjustments as needed.

The refrigerator 10 can use air-cooled refrigeration to cool the storage compartment. That is to say, an air duct system is provided in the casing 101. For example, the air duct system can be provided with a refrigerating air duct 123 and a freezing air duct 143 for the refrigerating compartment 12 and the freezing compartment 13 respectively, and between the refrigerating air duct 123 and the freezing air duct 143 is respectively provided with a refrigeration evaporator and a freezing evaporator. The refrigerating air channel 123 has an air supply port and an air return port communicating with the refrigerating compartment 12 , and the freezing air duct 143 has an air supply port and an air return port communicating with the freezing compartment 13 .

The refrigerating fan 132 is used to promote the formation of a refrigerating circulating airflow that is supplied from the refrigerating air duct 123 to the refrigerating compartment 12 , and then returns to the refrigerating air duct 123 from the air return port. When the refrigerating evaporator 131 is cooling, the refrigerating cycle airflow exchanges heat with the refrigerating evaporator 131 when passing through the refrigerating evaporator 131 to reduce the temperature. Thereby, cooling and cooling inside the refrigerated compartment 12 are realized through air circulation.

The refrigerating fan 142 is used to promote the formation of a refrigerating cycle airflow supplied from the refrigerating air duct 143 to the refrigerating compartment 13 and then returning to the refrigerating air duct 143 from the refrigerating air return port. When the refrigerating evaporator 141 is cooling, the refrigerating cycle airflow exchanges heat with the refrigerating evaporator 141 when passing through the refrigerating evaporator 141 to lower the temperature. Thereby, cooling and cooling inside the freezing compartment 13 are realized through the airflow circulation.

The magnetic field fresh-keeping device 20 is provided with a fresh-keeping air duct 201 surrounding the fresh-keeping space 21. The fresh-keeping air duct 201 is connected to the refrigerating air duct 123 in a controlled manner to form an air flow around the fresh-keeping space 21. On the one hand, the cooling of the magnetic field fresh-keeping device 20 is realized. , to take away the heat generated by the magnetic field assembly 30, so that the temperature of the fresh-keeping space 21 is stabilized within the set fresh-keeping temperature range; on the other hand, the temperature of each area of the magnetic field fresh-keeping device 20 can be made uniform.

The refrigerator 10 can also be used to connect or disconnect the fresh-keeping damper 133 connected between the refrigerating air duct 123 and the fresh-keeping air duct 201, so as to connect or disconnect the refrigerating air duct 123 and the external refrigerating space 121 of the magnetic field fresh-keeping device 20. Refrigeration damper 134. The magnetic field fresh-keeping device 20 may be provided with a fresh-keeping air inlet 22 and a fresh-keeping return air outlet 23 .

When the fresh-keeping air door 133 is opened, the refrigerating air duct 123 communicates with the fresh-keeping air duct 201, and the airflow formed by the refrigerating fan 132 is introduced into the air-flow of the refrigerating air duct 123 from the fresh-keeping air inlet 22, and surrounds the fresh-keeping space 21 through the fresh-keeping air duct 201 to perform cooling exchange. heat, and then return to the refrigerated air duct 123 through the fresh-keeping return air outlet 23.

When the refrigerating damper 134 is opened, the refrigerating air channel 123 communicates with other refrigerating spaces 121 except the magnetic fresh-keeping device 20 in the refrigerating compartment 12, and the airflow formed by the refrigerating fan 132 enters the refrigerating space 121 from the refrigerating air inlet 122 to perform refrigeration exchange. heat, and then return to the refrigerating air duct 123 through the return air outlet.

When the refrigerating damper 134 and the fresh-keeping damper 133 are opened at the same time, the refrigerating air duct 123 is connected with the fresh-keeping air duct 201 and the refrigerating space 121, and the airflow formed by the refrigerating fan 132 enters the fresh-keeping air duct 201 and the refrigerating space 121 at the same time. 21 and the refrigerated space 121 for refrigeration.

Refrigerating fan 132 cools fresh-keeping space 21 and refrigerating space 121 simultaneously, utilizes fresh-keeping damper 133 and refrigerating damper 134 to switch the air flow, reduces the use of parts, and saves the space taken by the cooling air path.

In other optional embodiments, the refrigerator 10 of this embodiment can also cool the fresh-keeping space 21 and the refrigerating space 121 in a direct cooling manner, for example, the evaporator can be directly attached to the back of the refrigerating compartment 12, and the Convection realizes heat exchange. Since the heat exchange efficiency of the air-cooling method is higher, the temperature in the refrigerated compartment 12 can be made more uniform, and the air-cooling method can be preferably used for refrigeration.

3 is a schematic diagram of a magnetic field fresh-keeping device 20 in a refrigerator 10 with a magnetic field fresh-keeping function according to an embodiment of the present invention; FIG. 4 is a schematic diagram of a magnetic field component in a refrigerator 10 with a magnetic field fresh-keeping function according to an embodiment of the present invention.

The magnetic field fresh keeping device 20 can be set as a drawer, for example, the magnetic field fresh keeping device 20 can include a bucket body 25 and a drawer 24 . The fresh-keeping air inlet 22 and the fresh-keeping return air outlet 23 communicated with the refrigerating air duct 123 are formed at the rear of the bucket body 25 . The drawer 24 is pullably arranged in the barrel body 25, and defines a fresh-keeping space 21 therein, that is, the fresh-keeping space 21 in the drawer 24 can be controlled by a magnetic field and temperature to realize a magnetic field fresh-keeping function.

The magnetic field fresh-keeping device 20 is configured to form a surrounding air passage (that is, fresh-keeping air) that flows back from the fresh-keeping air inlet 22 through the top wall of the barrel body 25, the front baffle plate of the drawer 24, and the space below the bottom plate of the drawer 24 to return to the fresh-keeping return air outlet 23. Road 201) to cool the fresh-keeping space 21. The surrounding air duct enters the inside of the magnetic field fresh-keeping device 20 from the fresh-keeping air inlet 22 at the top rear end of the magnetic field fresh-keeping device 20, passes through the top wall of the barrel body 25, enters the top of the front baffle of the drawer 24, and flows through the front baffle of the drawer 24. Enter the space below the bottom plate of the drawer 24 from the bottom behind the plate, then return to the fresh-keeping return air outlet 23 positioned at the rear wall of the staving 25 to complete the air circulation. That is, the front baffle of the drawer 24 is provided with an air duct interlayer, and the air duct interlayer is used to realize air supply at the front end of the magnetic field fresh-keeping device 20 . The above-mentioned surrounding air duct can make the inside of the magnetic field fresh-keeping device 20 evenly refrigerated, and at the same time take away the heat of the magnetic field assembly 30 .

The magnetic field assembly 30 may include two groups of magnetic components respectively arranged on the top cover of the drawer 24 and the bottom wall of the barrel body 25, wherein the first magnetic plate 321 and the first electromagnetic coil 311 are arranged on the top cover of the drawer 24, and the first electromagnetic coil 311 is integrally It has a flat shape and is placed against the first magnetically conductive plate 321 .

The second magnetically conductive plate 322 and the second electromagnetic coil (blocked by the second magnetically conductive plate 322 in the figure, not shown) are arranged on the bottom wall of the barrel body 25, the second electromagnetic coil is flat as a whole, and is connected with the second magnetically conductive The plate 322 is positioned against it.

The first magnetically conductive plate 321 and the second magnetically conductive plate 322 are disposed opposite to each other, and the magnetic field assembly 30 may further include a conductive tape 323 . The conductive tape 323 can be arranged on the side wall 225 of the barrel body 25, and connects the first magnetically conductive plate 321 and the second magnetically conductive plate 322 to form an annular magnetically conductive path around the drawer 24. The annular magnetic conduction path can be made of materials with low coercive force and high magnetic permeability, and the formed magnetic conduction path can be used to gather the magnetic field, improve the uniformity of the magnetic field in the fresh-keeping space 21, and reduce the release of the magnetic field to the outside. , to reduce interference with other components outside the magnetic field preservation device 20 (for example, avoid magnetizing other components, etc.). The first magnetically conductive plate 321, the second magnetically conductive plate 322, and the conductive tape can be made of silicon steel sheets or similar materials.

The first magnetically conductive plate 321 and the second magnetically conductive plate 322 cover the top and bottom of the fresh-keeping space 21 respectively, which can expand the coverage of the magnetic field and make the magnetic field more uniform.

The first electromagnetic coil 311 and the second electromagnetic coil are wound by electromagnetic coils, and the shape is a circular, oval or square ring that collides and is flat, the top and bottom are planar, and the thickness is significantly smaller than the outer circumference size. The surrounding air duct can also take away the heat generated by the magnetic field components, reducing the temperature impact on the fresh-keeping space 21 .

In some embodiments, the first electromagnetic coil 311 and the second electromagnetic coil may also be composed of a plurality of parallel small coils.

5 is a schematic block diagram of a refrigeration system of a refrigerator 10 with a magnetic field preservation function according to an embodiment of the present invention; FIG.

The refrigeration system may be a refrigeration cycle system composed of a compressor 310, a condenser 320, throttling devices 331, 341, evaporators 131, 141 and the like. The compression refrigeration system makes the evaporators 131 and 141 release cooling capacity through the refrigerant compression cycle. Steam, and increase the pressure and temperature of the refrigerant vapor through compression, creating conditions for transferring the heat of the refrigerant vapor to the external environment medium, that is, compressing the low-temperature and low-pressure refrigerant vapor to a high-temperature and high-pressure state. The condenser 320 uses the ambient cooling refrigerant to take away the heat from the high-temperature and high-pressure refrigerant vapor from the compressor 310, so that the high-temperature and high-pressure refrigerant vapor is cooled and condensed into a high-pressure and normal-temperature refrigerant liquid. The high-pressure and normal-temperature refrigerant liquid passes through throttling devices 331 and 341 to obtain low-temperature and low-pressure refrigerant, which is then sent to the evaporators 131 and 141 to absorb heat and evaporate. According to the corresponding principle of saturation pressure and saturation temperature, reducing the pressure of the refrigerant liquid can reduce the temperature of the refrigerant liquid. The evaporators 131 and 141 make the throttling low-temperature and low-pressure refrigerant liquid evaporate (boil) into vapor, absorb surrounding heat, lower the surrounding temperature, and achieve the purpose of refrigeration.

In this embodiment, the evaporator includes a refrigeration evaporator 131 and a freezing evaporator 141, which are arranged in parallel. The refrigeration throttling device 331 is used for throttling the refrigerant entering the refrigeration evaporator 131 , and the freezing throttling device 341 is used for throttling the refrigerant entering the freezing evaporator 141 . The solenoid valve 330 is used to switch the refrigerant supply to the refrigerating evaporator 131 and/or the freezing evaporator 141 . When the refrigerating compartment 12 and the freezing compartment 13 need cooling at the same time, the solenoid valve 330 supplies the refrigerant to the branches of the refrigerating evaporator 131 and the freezing evaporator 141 at the same time, so that the refrigerating evaporator 131 and the freezing evaporator 141 are simultaneously turned on for refrigeration. ; When only the refrigerated compartment 12 needs to be refrigerated, the solenoid valve 330 supplies the refrigerant to the refrigerated evaporator 131, and simultaneously disconnects the branch of the refrigerated evaporator 141, so that the refrigerated evaporator 131 is independently turned on for refrigeration; When refrigeration is required, the solenoid valve 330 supplies the refrigerant to the refrigeration evaporator 141, and at the same time disconnects the branch circuit of the refrigeration evaporator 131, so that the refrigeration evaporator 141 is independently turned on for refrigeration.

The opening and closing state of the electromagnetic valve 330 and the start-stop control of the compressor 310 can be controlled by the controller 360 . The controller 360 is connected to the refrigerating temperature detecting part 351, the fresh-keeping temperature detecting part 352, and the freezing temperature detecting part 353 respectively, and the temperature of the refrigerating space 121 measured by the refrigerating temperature detecting part 351, the fresh-keeping temperature detecting part 352, and the freezing temperature detecting part 353 , the temperature of the fresh-keeping space 21 and the temperature in the freezing compartment 13 control the refrigeration system and the air duct system. That is, the start and stop of compressor 310, refrigerating fan 132, refrigerating fan 142, and magnetic field assembly 30, and the opening and closing of fresh-keeping damper 133 and refrigerating damper 134 are adjusted to realize temperature control and magnetic field preservation.

The controller 360 includes: a memory 361, a processor 362, and a machine-executable program 363 stored on the memory 361 and running on the processor 362, and the processor 362 executes the machine-executable program 363 to realize any of the above-mentioned magnetic fields. A method for controlling a refrigerator with a freshness preservation function.

It should be noted that the logic and/or steps shown in the following flow chart introducing the control method of the refrigerator with the magnetic field preservation function of this embodiment or described in other ways here, for example, can be considered to be used to realize the logic A sequenced list of executable instructions of functions, embodied in any computer-readable medium, for an instruction-executing system, apparatus, or device (such as a computer-based system, a system including a devices or devices that fetch and execute instructions) or in conjunction with such instruction execution systems, devices or devices.

More specific examples of memory 361 include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), random access memory (RAM), read only memory (ROM), Erases editable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM).

It should be understood that various parts of the present invention can be realized by hardware, software, firmware or their combination. In the above-described embodiments, various steps or methods may be implemented by software or firmware stored in the memory 361 and executed by a suitable instruction execution system.

In addition, it should be pointed out that in the device and method of the present invention, obviously, each component or each step can be decomposed and/or reassembled. These decompositions and/or recombinations should be considered equivalents of the present invention. Also, the steps for executing the above series of processes can naturally be executed in chronological order according to the illustrated order, but it is not necessary to be executed in chronological order, and some steps can be executed in parallel or independently of each other. For those of ordinary skill in the art, it can be understood that all or any steps or components of the method and device of the present invention can be implemented in any computing device (including a processor, storage medium, etc.) or a network of computing devices in the form of hardware or firmware , software or a combination thereof, which can be realized by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

Fig. 7 is a schematic diagram of a control method of a refrigerator with a magnetic field preservation function according to an embodiment of the present invention, and the control method may generally include:

In step S702, the temperatures of the magnetic field fresh keeping device 20 and the external refrigerated space 121 of the magnetic field fresh keeping device 20 are acquired respectively, and the fresh keeping detection temperature and the refrigerating detection temperature are obtained. The fresh-keeping detection temperature and the refrigeration detection temperature can be detected by the refrigeration temperature detection part 351 and the fresh-keeping temperature detection part 352 respectively. In some embodiments, the refrigerated temperature detection part 351 and the fresh-keeping temperature detection part 352 may include a plurality of sensors arranged in different positions of the refrigerated space 121 and the fresh-keeping space 21, and determine the temperatures of multiple positions through the measurement results of the multiple sensors, and determine The freshness detection temperature and the refrigeration detection temperature that more accurately reflect the overall temperature state of the refrigeration space 121 and the freshness preservation space 21 are obtained.

In step S704, after any one of the freshness detection temperature and the refrigeration detection temperature is greater than the preset refrigeration starting temperature, control the refrigeration evaporator 131 to start refrigeration. The refrigerating start-up temperature can be set according to the set temperature of the refrigerated compartment 12 , and generally can be set to be slightly higher than the set temperature of the refrigerated compartment 12 . In the case that the fresh-keeping detection temperature and the refrigeration detection temperature are greater than the refrigeration start-up temperature, it means that the refrigeration needs to be turned on. To turn on the refrigeration of the refrigerating evaporator 131 , it is necessary to turn on the compressor 310 and make the solenoid valve 330 supply refrigerant to the refrigerating evaporator 131 . After the refrigerated compartment 12 is turned on for refrigeration, the refrigerating fan 132 , the fresh-keeping damper 133 , and the refrigerating damper 134 can also be opened to provide cooling airflow to the fresh-keeping air duct 201 and the refrigerating space 121 outside the magnetic field fresh-keeping device 20 .

Step S706 , start the magnetic field assembly 30 of the magnetic field fresh keeping device 20 to apply a magnetic field to the fresh keeping space 21 inside the magnetic field fresh keeping device 20 . The magnetic field assembly 30 is activated after the refrigerated compartment 12 is turned on for cooling, and it is cooled during the cooling process, thereby solving the problem of releasing heat and causing the fresh-keeping space 21 or the refrigerated space 121 to heat up.

After the refrigerating evaporator 131 turns on the refrigeration step, it can also continuously detect the fresh-keeping detection temperature and the refrigeration detection temperature; the fresh-keeping detection temperature and the refrigeration detection temperature are compared with the preset refrigeration shutdown temperature respectively; If it is less than or equal to the shutdown temperature of the refrigeration, the refrigeration evaporator 131 is controlled to turn off refrigeration, and the magnetic field assembly 30 is turned off after a delay after the refrigeration evaporator 131 turns off refrigeration. That is to say, after the refrigerating evaporator 131 is closed, the magnetic field assembly 30 is turned off in a delayed manner, and the remaining cold capacity in the refrigerating evaporator 131 and the refrigerating air duct 123 can be used to maintain the cooling of the magnetic field assembly 30, so that the magnetic field assembly 30 can last longer. Running, improve the effect of magnetic field preservation. The shutdown temperature of the refrigerator is set according to the set temperature of the refrigerated compartment 12 , and generally can be set to be slightly lower than the set temperature of the refrigerated compartment 12 .

During the above-mentioned delay period, that is, in the process that the refrigerating evaporator 131 closes the refrigeration and the magnetic field assembly 30 is still open, close the refrigerating damper 134, and keep the refrigerating fan 132 and the fresh-keeping damper 133 open; after closing the magnetic field assembly 30, turn off the refrigerating Fan 132 and fresh air door 133. Therefore, during the delay period, the airflow is maintained in the fresh-keeping air duct 201 to take away the heat of the magnetic field assembly 30 .

After the fresh-keeping detection temperature and the refrigeration detection temperature are respectively compared with the preset refrigeration shutdown temperature, refrigeration adjustment can be performed according to the comparison results. Specifically, when the freshness detection temperature is less than or equal to the refrigeration shutdown temperature and the refrigeration detection temperature is greater than the refrigeration shutdown temperature, the freshness damper 133 is closed, and the refrigeration evaporator 131 is kept refrigerated, the refrigeration fan 132 is turned on, and the refrigeration damper 134 is opened. When the refrigerated detection temperature is less than or equal to the refrigerated shutdown temperature and the freshness detection temperature is greater than the refrigerated shutdown temperature, the refrigerated damper 134 is closed, and the refrigerated evaporator 131 is kept refrigerated, the refrigerated fan 132 is turned on, and the freshness damper 133 is opened.

In addition to the cooling control of the refrigerated compartment 12, the control method of this embodiment can further control the freezing and cooling, that is, after controlling the refrigerating evaporator 131 to turn off the cooling, it also includes: obtaining the temperature of the refrigerated compartment 13 detected by the freezing temperature detection component 353 temperature, to obtain the freezing detection temperature; the freezing detection temperature is compared with the preset freezing shutdown temperature; if the freezing detection temperature is greater than the freezing shutdown temperature, the solenoid valve 330 is controlled to supply the refrigerant to the freezing evaporator 141 to cool the freezing compartment 13 Refrigerate. If the freezing detection temperature is less than or equal to the freezing shutdown temperature, the compressor 310 of the refrigerator 10 is controlled to stop, and the freezing evaporator 141 is stopped to cool the freezing compartment 13 . That is, the cooling of the refrigerating compartment 12 and the freezing compartment 13 is completed. The freezer shutdown temperature and the freezer startup temperature can also be set at the set temperature of the freezer compartment 13, so that the temperature in the freezer compartment 13 is maintained within the set temperature range.

Generally speaking, the time of freezing and cooling is longer than that of refrigerating and cooling. Therefore, after refrigerating and cooling is completed, the cooling state of freezing is further judged, and the time for applying a magnetic field by the magnetic field assembly 40 is further extended by using the time of freezing and cooling alone.

When the refrigerating evaporator 131 turns off cooling and the freezing evaporator 141 turns on cooling, the refrigerating damper 134 is closed, the refrigerating fan 132 is turned on, and the freshness damper 133 is turned on. That is to say, during the cooling process of the freezer compartment 13, the magnetic field assembly 30 is also kept turned on to dissipate heat from the magnetic field assembly 30 by utilizing the cold leaked from the freezer to the refrigerator.

After closing the magnetic field assembly 30 , the refrigeration fan 132 , and the fresh-keeping damper 133 , it may also include: controlling the refrigeration fan 132 and the fresh-keeping damper 133 to start at preset intervals, so as to make the air inside the magnetic field fresh-keeping device 20 flow. By starting the refrigerating fan 132 at intervals, the closed fresh-keeping space 21 is periodically disturbed by the air flow, so that the temperature of the magnetic field fresh-keeping device 20 is kept uniform, and local temperature rise is avoided.

In the control method of the refrigerator with the magnetic field fresh-keeping function in the above-mentioned embodiment, when the fresh-keeping detection temperature or the refrigerating detection temperature is greater than the refrigerating start-up temperature, after the refrigerating room 12 is turned on for cooling, the magnetic field component 30 of the magnetic field fresh-keeping device 20 is controlled to start, and the magnetic field A magnetic field is applied to the fresh-keeping space 21 inside the fresh-keeping device 20 . During the cooling process, the magnetic field assembly 30 is cooled at the same time to prevent heat from affecting the fresh-keeping space 21 or the refrigerated space 121 and improve the storage quality. The magnetic field assembly 30 prolongs the application time of the magnetic field as much as possible to improve the freshness preservation effect of the magnetic field.

Fig. 8 is a schematic diagram of an execution flow of a control method of a refrigerator with a magnetic field preservation function according to an embodiment of the present invention. The flow of the control method includes:

Step S802, acquiring the freshness detection temperature T_Snr1 and the refrigeration detection temperature T_Snr2 detected by the refrigeration temperature detection unit 351 and the preservation temperature detection unit 352;

Step S804, judging whether the preservation detection temperature T_Snr1 and the refrigeration detection temperature T_Snr2 satisfy T_Snr1≥T1_on and/or T_Snr2≥T1_on, that is, any one of the preservation detection temperature and refrigeration detection temperature is greater than the preset refrigeration start-up temperature T1_on;

Step S806, turn on the compressor 310, make the refrigerating evaporator 131 start cooling, and turn on the refrigerating fan 132, the refrigerating damper 134, the freshness damper 133, and the magnetic field assembly 30;

Step S808, judging whether the freshness detection temperature T_Snr1 and the refrigeration detection temperature T_Snr2 satisfy T_Snr1<T1_off and T_Snr2≥T1_off, T1_off is the preset refrigeration shutdown temperature, if satisfied, close the freshness damper 133 and keep the refrigeration damper 134 open until T_Snr2< T1_off;

Step S810, judging whether the freshness detection temperature T_Snr1 and the refrigeration detection temperature T_Snr2 satisfy T_Snr1≥T1_off and T_Snr2<T1_off;

Step S812, if satisfied, then close the refrigeration damper 134 and the refrigeration evaporator 131 to stop cooling, and keep the refrigeration fan 132 and freshness preservation damper 133 open until T_Snr1<T1_off, that is, the magnetic field freshness preservation device 20 is specially refrigerated;

Step S814, obtaining the freezing detection temperature T_Snr3 detected by the freezing temperature detection component 353, and judging whether T_Snr3 satisfies T_Snr3≥T2_off, where T2_off is the freezing shutdown temperature;

Step S816, if T_Snr3≥T2_off, the solenoid valve 330 switches the refrigerant to the refrigerating evaporator 141 to cool the refrigerating evaporator 141, turn on the refrigerating fan 142, and open the fresh-keeping damper 133. While the refrigerating evaporator 141 is in the process of turning on the refrigeration, close the refrigerating damper 134, and keep the refrigerating fan 132 open and the fresh-keeping damper 133 open, and use the cold leaked from the freezing to the refrigerating to dissipate heat from the magnetic field assembly 30;

Step S818, if T_Snr3<T2_off, turn off the compressor 310, and keep the fresh-keeping damper 133 and the refrigeration fan 132 open;

Step S820, delay closing the fresh-keeping damper 133, the refrigeration fan 132, and the magnetic field assembly 30, for example, delay closing the fresh-keeping damper 133 and the refrigeration fan 132 when the compressor 310 is turned off, and the delay time can be set to 10 minutes.

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 control method for a refrigerator with a magnetic field preservation function, wherein the refrigerator includes: a box body defining a refrigerated compartment, a magnetic field preservation device arranged in the refrigerated compartment, and a refrigerated unit for cooling the refrigerated compartment evaporator, and the control method includes:

   Obtaining the temperature of the magnetic field fresh-keeping device and the external refrigerated space of the magnetic field fresh-keeping device respectively, and obtaining the fresh-keeping detection temperature and the refrigerating detection temperature;

   After any one of the freshness detection temperature and the refrigeration detection temperature is greater than the preset refrigeration startup temperature, control the refrigeration evaporator to start refrigeration, and then start the magnetic field component of the magnetic field preservation device to send A magnetic field is applied to the fresh-keeping space inside.
2. The control method according to claim 1, wherein

   The refrigerated room adopts air-cooled refrigeration, the back of the refrigerated room is provided with a refrigerated air channel, the magnetic field fresh-keeping device is provided with a fresh-keeping air channel surrounding the fresh-keeping space, and the refrigerated evaporator is arranged in the refrigerated air channel ;

   The refrigerator also includes: a fresh-keeping damper for connecting or disconnecting the refrigerating air duct and the fresh-keeping air duct, and a fresh-keeping damper for connecting or disconnecting the refrigerating air duct and the external refrigerating space of the magnetic field fresh-keeping device. The refrigerating air door connected therebetween, and the refrigerating fan used to promote the formation of airflow supplied from the refrigerating air duct to the fresh air duct and/or the refrigerating space, and

   After the step of controlling the refrigerating evaporator to turn on refrigeration, it also includes:

   Opening the refrigerating fan, the fresh-keeping damper, and the refrigerating damper provides cooling airflow to the fresh-keeping air passage and the refrigerating space outside the magnetic field fresh-keeping device.
3. The control method according to claim 2, further comprising:

   Continuously detect the fresh-keeping detection temperature and the refrigerated detection temperature;

   Comparing the fresh-keeping detection temperature and the refrigerating detection temperature with the preset refrigerating shutdown temperature respectively;

   When the freshness detection temperature and the refrigeration detection temperature are both less than or equal to the refrigeration shutdown temperature, control the refrigeration evaporator to turn off refrigeration, and delay turning off the magnetic field after the refrigeration evaporator turns off refrigeration components.
4. The control method according to claim 3, wherein

   When the refrigerating evaporator is turned off for refrigeration and the magnetic field assembly is still open, close the refrigerating damper, and keep the refrigerating fan and the fresh-keeping damper open;

   After the magnetic field assembly is turned off, the refrigerating fan and the fresh air door are turned off.
5. The control method according to claim 3, wherein after the step of comparing the fresh-keeping detected temperature and the refrigerated detected temperature with the preset refrigerated shutdown temperature, it further comprises:

   When the freshness detection temperature is less than or equal to the refrigerating shutdown temperature and the refrigerating detection temperature is greater than the refrigerating shutdown temperature, close the freshness damper, keep the refrigerating evaporator cooling, and open the refrigerating fan , and the refrigerating damper is opened;

   When the refrigerating detection temperature is less than or equal to the refrigerating shutdown temperature and the freshness detection temperature is greater than the refrigerating shutdown temperature, close the refrigerating damper, keep the refrigerating evaporator cooling, and open the refrigerating fan , and the fresh air door is opened.
6. The control method according to any one of claims 3-5, wherein a freezer compartment is further defined in the box, and the refrigerator further includes a freezer evaporator for cooling the freezer compartment, for switching Refrigerant is supplied to the solenoid valve of the refrigerating evaporator and/or the refrigerating evaporator, and after controlling the refrigerating evaporator to turn off refrigeration, it also includes:

   Obtain the temperature of the freezing compartment to obtain the freezing detection temperature;

   comparing the freezing detection temperature with a preset freezing shutdown temperature;

   If the freezing detection temperature is greater than the freezing shutdown temperature, the solenoid valve is controlled to supply the refrigerant to the freezing evaporator to cool the freezing compartment.
7. The control method according to claim 6, wherein after the step of comparing the freezing detection temperature with the preset freezing shutdown temperature, it further comprises:

   If the freezing detection temperature is less than or equal to the freezing shutdown temperature, the compressor of the refrigerator is controlled to stop, and the freezing evaporator is stopped from cooling the freezing compartment.
8. The control method according to claim 6, wherein

   When the refrigerating evaporator is turned off for cooling and the refrigerating evaporator is turned on for cooling, the refrigerating damper is closed, and the refrigerating fan is turned on and the fresh-keeping damper is kept open.
9. The control method according to claim 4 or 5, wherein after closing the magnetic field assembly, the refrigeration fan, and the fresh-keeping damper, it further includes:

   The refrigerating fan and the fresh-keeping damper are controlled to start at preset intervals, so as to make the air inside the magnetic field fresh-keeping device flow.
10. A refrigerator with a magnetic field preservation function, comprising:

    The box body has a refrigerated compartment inside;

    The magnetic field fresh-keeping device is arranged in the refrigerated room;

    a refrigeration system comprising a refrigerated evaporator for refrigerating said refrigerated compartment;

    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, the control method according to any one of claims 1 to 9 is implemented.

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