Refrigerator with magnetic field preservation function and control method thereof

Abstract

The present invention provides a refrigerator with a magnetic field preservation function and a control method thereof, wherein the refrigerator comprises: a box body defining a refrigerated compartment, a magnetic field preservation device arranged in the refrigerated compartment, and a refrigerated evaporator for refrigerating the refrigerated compartment, and the control method comprises: respectively obtaining the temperature of the magnetic field preservation device and the external refrigerated space of the magnetic field preservation device to obtain a preservation detection temperature and a refrigerated detection temperature; after any one of the preservation detection temperature and the refrigerated detection temperature is greater than a preset refrigerated start-up temperature, controlling the refrigerated evaporator to start refrigeration, and then starting the magnetic field component of the magnetic field preservation device to apply a magnetic field to the preservation space inside the magnetic field preservation device. The scheme of the present invention cools the magnetic field component during the refrigeration process to avoid heat affecting the preservation space or the refrigerated space, improves the storage quality, and extends the application time of the magnetic field as much as possible to improve the magnetic field preservation effect.

Description

Technical Field

[0001] The invention relates to refrigeration and freezing equipment, and in particular provides a refrigerator with a magnetic field preservation function and a control method thereof. Background Art

[0002] Current research has found that magnetic fields can inhibit the growth of microorganisms and molds and extend the storage period of food. Therefore, magnetic fields can be used to assist in the storage of food, thereby achieving the purpose of extending the storage period of food. When using magnetic fields to assist in the storage of food, the magnetic field limits the free path of water molecules to a certain extent, which is specifically manifested in the breaking of hydrogen bonds in water molecule clusters. As a result, during the phase change 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, causing less damage to cells, reducing the loss rate of juice in food, and enabling the nutrition and taste of food to be better preserved.

[0003] Existing magnetic field preservation devices generally use electromagnetic devices to apply magnetic fields. Since the electromagnetic device generates heat in the process of generating the magnetic field, this will cause the temperature fluctuation in the preservation space to increase, resulting in a decrease in the quality of storage. In some cases, it will also cause the refrigerator's refrigeration system to start frequently, resulting in increased energy consumption and even shortening the service life of the refrigerator. Summary of the invention

[0004] An object of the present invention is to reduce the influence of heat generated during the application of a magnetic field on the temperature of a fresh-keeping space.

[0005] 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.

[0006] To achieve the above object, the present invention provides a control method for a refrigerator with a magnetic field preservation function, the refrigerator comprising: a box body defining a refrigerating compartment, a magnetic field preservation device arranged in the refrigerating compartment, and a refrigerating evaporator for cooling the refrigerating compartment, and the control method comprises:

[0007] Respectively obtain the temperature of the magnetic field preservation device and the temperature of the external refrigeration space of the magnetic field preservation device to obtain the preservation detection temperature and the refrigeration detection temperature;

[0008] When either the fresh-keeping detection temperature or the refrigeration detection temperature is greater than the preset refrigeration startup temperature, the refrigeration evaporator is controlled to start refrigeration, and then the magnetic field component of the magnetic field fresh-keeping device is started to apply a magnetic field to the fresh-keeping space inside the magnetic field fresh-keeping device.

[0009] Optionally, the refrigerated compartment adopts air cooling, a refrigerated air duct is arranged at the back of the refrigerated compartment, the magnetic field preservation device is provided with a fresh-keeping air duct surrounding the fresh-keeping space, and the refrigerated evaporator is arranged in the refrigerated air duct;

[0010] The refrigerator further comprises: 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 refrigerating space outside the magnetic field fresh-keeping device, and a refrigerating fan for causing an airflow from the refrigerating air duct to the fresh-keeping air duct and / or the refrigerating space, and after the step of controlling the refrigerating evaporator to start refrigeration, the refrigerator further comprises:

[0011] The refrigeration fan, the fresh-keeping air door, and the refrigeration air door are turned on to provide refrigeration airflow to the fresh-keeping air duct and the refrigerated space outside the magnetic field fresh-keeping device.

[0012] Optionally, after the step of starting the refrigeration evaporator to cool, the method further includes:

[0013] Continuously detect the fresh-keeping detection temperature and the refrigeration detection temperature;

[0014] Compare the fresh-keeping detection temperature and the refrigeration detection temperature with the preset refrigeration shutdown temperature respectively;

[0015] When the fresh-keeping detection temperature and the refrigeration detection temperature are both less than or equal to the refrigeration shutdown temperature, the refrigeration evaporator is controlled to shut down the refrigeration, and the magnetic field component is shut down with a delay after the refrigeration evaporator shuts down the refrigeration.

[0016] Optionally, when the refrigeration evaporator is turned off for cooling but the magnetic field component is still turned on, the refrigeration damper is closed and the refrigeration fan and the fresh-keeping damper are kept open; after turning off the magnetic field component, the refrigeration fan and the fresh-keeping damper are closed.

[0017] Optionally, after the step of comparing the fresh-keeping detection temperature and the refrigeration detection temperature with the preset refrigeration shutdown temperature respectively, the method further includes:

[0018] When the fresh-keeping 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 fresh-keeping damper is closed, and the refrigeration evaporator is kept refrigerated, the refrigeration fan is turned on, and the refrigeration damper is opened;

[0019] When the refrigeration detection temperature is less than or equal to the refrigeration shutdown temperature and the fresh-keeping detection temperature is greater than the refrigeration shutdown temperature, the refrigeration damper is closed, and the refrigeration evaporator is kept refrigerated, the refrigeration fan is turned on, and the fresh-keeping damper is opened.

[0020] Optionally, a freezing compartment is further defined in the box body, the refrigerator further comprises a freezing evaporator for refrigerating the freezing compartment, a solenoid valve for switching the refrigerant supply to the refrigerating evaporator and / or the freezing evaporator, and after controlling the refrigerating evaporator to turn off refrigeration, the method further comprises:

[0021] Obtain the temperature of the freezing compartment and obtain the freezing detection temperature;

[0022] comparing the freeze detection temperature with a preset freeze shutoff temperature;

[0023] If the freezing detection temperature is greater than the freezing shutdown temperature, the solenoid valve is controlled to supply refrigerant to the freezing evaporator to cool the freezing compartment.

[0024] Optionally, after the step of comparing the freezing detection temperature with the preset freezing shutdown temperature, the method further includes:

[0025] 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.

[0026] Optionally, when the refrigeration evaporator is turned off for refrigeration and the freezing evaporator is turned on for refrigeration, the refrigeration damper is closed, and the refrigeration fan and the fresh-keeping damper are kept open.

[0027] Optionally, after closing the magnetic field component, the refrigeration fan and the fresh-keeping damper, the method further includes: controlling the refrigeration fan and the fresh-keeping damper to start at preset periodic intervals to allow air to flow inside the magnetic field fresh-keeping device.

[0028] According to another aspect of the present invention, there is also provided a refrigerator with a magnetic field preservation function, comprising:

[0029] A box body, defining a refrigerated compartment therein;

[0030] Magnetic field preservation device, arranged in the cold storage room;

[0031] A refrigeration system, which includes a refrigeration evaporator for refrigerating the refrigerated compartment;

[0032] The controller comprises 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 implemented.

[0033] Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solution of the present invention, the magnetic field preservation device is arranged in the cold storage compartment of the refrigerator, and the refrigeration system of the cold storage compartment is used to refrigerate the preservation space inside the magnetic field preservation device and the cold storage space outside the magnetic field preservation device. When the preservation detection temperature or the cold storage detection temperature is greater than the cold storage start-up temperature, after the cold storage compartment is turned on to refrigerate, the magnetic field component of the magnetic field preservation device is controlled to start, and a magnetic field is applied to the preservation space inside the magnetic field preservation device. During the refrigeration process, the magnetic field component is cooled at the same time to prevent heat from affecting the preservation space or the cold storage space, thereby improving the storage quality.

[0034] Furthermore, the refrigerator with magnetic field preservation function and the control method thereof of the present invention adopts air cooling for refrigeration, and the magnetic field preservation device is provided with a preservation air duct surrounding the preservation space, and the refrigeration airflow can make the temperature of the preservation space more uniform, so that the heat dissipation efficiency of the magnetic field component is higher. The magnetic field component is controlled in linkage with the fan and the damper.

[0035] Furthermore, the refrigerator with magnetic field preservation function and the control method thereof of the present invention, after the refrigeration of the refrigerated compartment is completed, delays the closing of the magnetic field component, and utilizes the residual heat in the refrigerated evaporator and the refrigerated air duct to dissipate the heat of the magnetic field component, thereby allowing the magnetic field component to extend the application time of the magnetic field and improve the magnetic field preservation effect.

[0036] Furthermore, the refrigerator with magnetic field preservation function and the control method thereof of the present invention avoids frequent start and stop of the refrigeration system by coordinating the refrigeration of the freezing compartment and the refrigerating compartment, thereby reducing energy consumption and improving the reliability of the refrigeration system.

[0037] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same reference numerals indicate the same or similar components or parts in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0039] In the attached figure:

[0040] Figure 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;

[0041] Figure 2 is an internal side cross-sectional view of a refrigerator with a magnetic field preservation function according to an embodiment of the present invention;

[0042] Figure 3 is a schematic diagram of a magnetic field preservation device in a refrigerator with a magnetic field preservation function according to an embodiment of the present invention;

[0043] Figure 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;

[0044] Figure 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;

[0045] Figure 6is 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;

[0046] Figure 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

[0047] Figure 8 The present invention is a schematic diagram of an execution flow of a control method for a refrigerator with a magnetic field preservation function according to an embodiment of the present invention. DETAILED DESCRIPTION

[0048] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0049] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", "primary" and "secondary" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] 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.

[0052] Figure 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; Figure 21 is an internal side cross-sectional view of a 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 multiple, such as a refrigeration compartment 12, a freezer compartment 13, a variable temperature compartment, and the like. The number and function of the specific storage compartments can be configured according to pre-determined requirements. The number and function of the specific storage compartments can be configured according to pre-determined requirements. In some embodiments, the storage temperature of the refrigeration compartment 12 may be 2 to 9°C, or 4 to 7°C; the storage temperature of the freezer compartment 13 may be -22 to -14°C, or -20 to 16°C. The set temperature of the variable temperature compartment can be adjusted according to demand to store suitable food.

[0053] The positions and locations of the storage compartments shown in the above figures are only examples and can be adjusted by those skilled in the art as needed.

[0054] The refrigerator 10 can use air cooling to cool the storage compartment. That is, an air duct system is provided in the box body 101. For example, the air duct system can provide a refrigerating air duct 123 and a freezing air duct 143 for the refrigerating compartment 12 and the freezing compartment 13, respectively, and a refrigerating evaporator and a freezing evaporator are provided in the refrigerating air duct 123 and the freezing air duct 143, respectively. The refrigerating air duct 123 has an air supply port and an air return port connected to the refrigerating compartment 12, and the freezing air duct 143 has an air supply port and an air return port connected to the freezing compartment 13.

[0055] The refrigeration fan 132 is used to promote the formation of a refrigeration circulation airflow that is supplied from the refrigeration air duct 123 to the refrigeration compartment 12 and then returns to the refrigeration air duct 123 from the return air port. When the refrigeration evaporator 131 is refrigerating, the refrigeration circulation airflow exchanges heat with the refrigeration evaporator 131 when passing through the refrigeration evaporator 131 to reduce the temperature. Thus, the interior of the refrigeration compartment 12 is cooled and cooled by air circulation.

[0056] The refrigeration fan 142 is used to promote the formation of a refrigeration cycle airflow that is supplied from the refrigeration air duct 143 to the freezing chamber 13 and then returns to the refrigeration air duct 143 from the refrigeration return air port. When the refrigeration evaporator 141 is refrigerating, the refrigeration cycle airflow exchanges heat with the refrigeration evaporator 141 when passing through the refrigeration evaporator 141 to reduce the temperature. Thus, the interior of the freezing chamber 13 is cooled and cooled by air circulation.

[0057] The magnetic field preservation device 20 is provided with a preservation air duct 201 surrounding the preservation space 21. The preservation air duct 201 is connected to the refrigeration air duct 123 in a controlled manner to form an airflow surrounding the preservation space 21. On the one hand, it realizes refrigeration and cooling of the magnetic field preservation device 20, takes away the heat generated by the magnetic field component 30, and stabilizes the temperature of the preservation space 21 within the set preservation temperature range; on the other hand, it can make the temperature of each area of ​​the magnetic field preservation device 20 uniform.

[0058] The refrigerator 10 can also be used to connect or disconnect the fresh-keeping air door 133 connected between the refrigeration air duct 123 and the fresh-keeping air duct 201, and to connect or disconnect the refrigeration air door 134 connected between the refrigeration air duct 123 and the refrigerated space 121 outside the magnetic field fresh-keeping device 20. The magnetic field fresh-keeping device 20 can be provided with a fresh-keeping air inlet 22 and a fresh-keeping air return vent 23.

[0059] When the fresh-keeping air door 133 is opened, the refrigerated air duct 123 is connected to the fresh-keeping air duct 201, and the airflow formed by the refrigerated fan 132 is introduced into the airflow of the refrigerated air duct 123 from the fresh-keeping air inlet 22, surrounds the fresh-keeping space 21 through the fresh-keeping air duct 201, performs cooling and heat exchange, and then returns to the refrigerated air duct 123 through the fresh-keeping return air port 23.

[0060] When the refrigeration damper 134 is opened, the refrigeration duct 123 is connected to other refrigeration spaces 121 in the refrigeration compartment 12 except the magnetic field preservation device 20, and the airflow formed by the refrigeration fan 132 enters the refrigeration space 121 from the refrigeration air inlet 122 for cooling and heat exchange, and then returns to the refrigeration duct 123 through the return air port.

[0061] When the refrigeration damper 134 and the fresh-keeping damper 133 are opened at the same time, the refrigeration air duct 123 is connected to the fresh-keeping air duct 201 and the refrigerated space 121, and the airflow formed by the refrigeration fan 132 enters the fresh-keeping air duct 201 and the refrigerated space 121 at the same time, and cools the magnetic field fresh-keeping space 21 and the refrigerated space 121 at the same time.

[0062] The refrigeration fan 132 cools the fresh-keeping space 21 and the cold-storage space 121 simultaneously, and uses the fresh-keeping air door 133 and the cold-storage air door 134 to switch the air flow, thereby reducing the number of components used and saving the space occupied by the refrigeration air path.

[0063] In other optional embodiments, the refrigerator 10 of this embodiment can also use direct cooling to cool the fresh-keeping space 21 and the refrigerated space 121. For example, the evaporator can be directly attached to the back of the refrigerated compartment 12 to achieve heat exchange through convection. 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.

[0064] Figure 3is a schematic diagram of a magnetic field preservation device 20 in a refrigerator 10 with a magnetic field preservation function according to an embodiment of the present invention; Figure 4 Schematic diagram of a magnetic field assembly in a refrigerator 10 with a magnetic field preservation function according to an embodiment of the present invention.

[0065] The magnetic field preservation device 20 can be configured as a drawer, for example, the magnetic field preservation device 20 can include a barrel 25 and a drawer 24. The rear portion of the barrel 25 forms a preservation air inlet 22 and a preservation air return 23 that are connected to the refrigeration air duct 123. The drawer 24 is pullable and disposed in the barrel 25, and defines a preservation space 21 therein, that is, the preservation space 21 in the drawer 24 can realize the magnetic field preservation function through magnetic field and temperature control.

[0066] The magnetic field preservation device 20 is configured to form a surrounding air duct (i.e., the fresh-keeping air duct 201) that flows from the fresh-keeping air inlet 22 through the top wall of the barrel 25, the front baffle of the drawer 24, and the space below the bottom plate of the drawer 24 in sequence and returns to the fresh-keeping return air duct 23 to cool the fresh-keeping space 21. The surrounding air duct enters the interior of the magnetic field preservation device 20 from the fresh-keeping air inlet 22 at the top rear end of the magnetic field preservation device 20, passes through the top wall of the barrel 25, enters the top of the front baffle of the drawer 24, flows through the front baffle of the drawer 24, enters the space below the bottom plate of the drawer 24 from the bottom, and then returns to the fresh-keeping return air duct 23 located on the rear wall of the barrel 25 to complete the air flow cycle. That is, an air duct interlayer is provided in the front baffle of the drawer 24, and air supply is realized at the front end of the magnetic field preservation device 20 by using the air duct interlayer. The above-mentioned surrounding air duct can make the interior of the magnetic field preservation device 20 evenly cooled, and at the same time take away the heat of the magnetic field component 30.

[0067] 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 conductive 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 flat as a whole and is arranged close to the first magnetic conductive plate 321.

[0068] The second magnetic conductive plate 322 and the second electromagnetic coil (blocked by the second magnetic conductive plate 322 in the figure, not shown) are arranged on the bottom wall of the barrel 25. The second electromagnetic coil is flat as a whole and is arranged close to the second magnetic conductive plate 322.

[0069] The first magnetic conductive plate 321 and the second magnetic conductive plate 322 are arranged opposite to each other, and the magnetic field assembly 30 may further include a conductive tape 323. The conductive tape 323 may be arranged on the side wall 225 of the barrel 25, and connect the first magnetic conductive plate 321 and the second magnetic conductive plate 322 to form an annular magnetic conductive path surrounding the drawer 24. The annular magnetic conductive path may be made of a material with low coercive force and high magnetic permeability, and the magnetic conductive path formed by the material may 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, thereby reducing interference with other components outside the magnetic field preservation device 20 (for example, avoiding magnetization of other components, etc.). The first magnetic conductive plate 321, the second magnetic conductive plate 322, and the conductive tape may be made of silicon steel sheets or similar materials.

[0070] The first magnetic conductive plate 321 and the second magnetic conductive plate 322 cover the top and the bottom of the fresh-keeping space 21 respectively, which can expand the coverage of the magnetic field and make the magnetic field more uniform.

[0071] The first electromagnetic coil 311 and the second electromagnetic coil are formed by winding electromagnetic coils, and are shaped as circular, oval or square rings collided, and are flat, with the top and bottom both being flat, and the thickness being significantly smaller than the outer circumference. The surrounding air duct can also take away the heat generated by the magnetic field component, reducing the temperature impact on the fresh-keeping space 21.

[0072] In some embodiments, the first electromagnetic coil 311 and the second electromagnetic coil may also be composed of a plurality of parallel small coils.

[0073] Figure 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; Figure 6 1 is a schematic block diagram of a control part in a refrigerator 10 with a magnetic field preservation function according to an embodiment of the present invention.

[0074] The refrigeration system may be a refrigeration cycle system composed of a compressor 310, a condenser 320, throttling devices 331, 341 and evaporators 131, 141. The compression refrigeration system releases coldness through the refrigerant compression cycle in the evaporator 131, 141. Its working principle is as follows: the compressor 310, as the power of the refrigeration cycle, is driven by the motor and rotates continuously, extracts the vapor in the evaporator 131, 141, and increases 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 environment to cool the refrigerant, takes away the heat of the high-temperature and high-pressure refrigeration vapor from the compressor 310, and cools and condenses the high-temperature and high-pressure refrigerant vapor into a high-pressure and normal-temperature refrigerant liquid. The high-pressure and normal-temperature refrigerant liquid passes through the throttling devices 331, 341 to obtain a low-temperature and low-pressure refrigerant, which is then sent to the evaporator 131, 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 evaporator 131, 141 allows the throttled low-temperature and low-pressure refrigerant liquid to evaporate (boil) into steam, absorb surrounding heat, and reduce the surrounding temperature to achieve the purpose of refrigeration.

[0075] In this embodiment, the evaporator includes a refrigerating evaporator 131 and a freezing evaporator 141, which are arranged in parallel. The refrigerating throttling device 331 is used to throttle the refrigerant entering the refrigerating evaporator 131, and the freezing throttling device 341 is used to throttle 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 both the refrigerating compartment 12 and the freezing compartment 13 need to be refrigerated, the solenoid valve 330 supplies the refrigerant to the branch circuits 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 start refrigeration at the same time; when only the refrigerating compartment 12 needs to be refrigerated, the solenoid valve 330 supplies the refrigerant to the refrigerating evaporator 131 and disconnects the branch circuit of the freezing evaporator 141, so that the refrigerating evaporator 131 starts refrigeration alone; when only the freezing compartment 13 needs to be refrigerated, the solenoid valve 330 supplies the refrigerant to the freezing evaporator 141 and disconnects the branch circuit of the refrigerating evaporator 131, so that the freezing evaporator 141 starts refrigeration alone.

[0076] The opening and closing state of the electromagnetic valve 330 and the start and stop control of the compressor 310 can be controlled by the controller 360. The controller 360 is connected to the refrigeration temperature detection component 351, the fresh-keeping temperature detection component 352, and the freezing temperature detection component 353 respectively, and controls the refrigeration system and the air duct system according to the temperature of the refrigeration space 121, the temperature of the fresh-keeping space 21, and the temperature in the freezing chamber 13 measured by the refrigeration temperature detection component 351, the fresh-keeping temperature detection component 352, and the freezing temperature detection component 353. That is, the start and stop of the compressor 310, the refrigeration fan 132, the freezing fan 142, and the magnetic field component 30, and the opening and closing of the fresh-keeping damper 133 and the refrigeration damper 134 are adjusted to achieve the functions of temperature control and magnetic field preservation.

[0077] The controller 360 includes: a memory 361, a processor 362, and a machine executable program 363 stored in the memory 361 and running on the processor 362, and when the processor 362 executes the machine executable program 363, any of the above-mentioned control methods of the refrigerator with a magnetic field preservation function is implemented.

[0078] It should be noted that the logic and / or steps represented in the flowchart of the control method of the refrigerator with a magnetic field preservation function of the present embodiment or described in other ways herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or equipment (such as a computer-based system, a system including a processor or other system that can fetch instructions from an instruction execution system, device or equipment and execute instructions), or used in combination with these instruction execution systems, devices or equipment.

[0079] More specific examples of memory 361 include the following: an electrical connection having one or more wirings (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM).

[0080] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in the memory 361 and executed by a suitable instruction execution system.

[0081] In addition, it should be noted that in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it is understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0082] Figure 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. The control method may generally include:

[0083] Step S702, respectively obtain the temperature of the magnetic field preservation device 20 and the external refrigerated space 121 of the magnetic field preservation device 20, and obtain the preservation detection temperature and the refrigerated detection temperature. The preservation detection temperature and the refrigerated detection temperature can be detected by the refrigerated temperature detection component 351 and the preservation temperature detection component 352, respectively. In some embodiments, the refrigerated temperature detection component 351 and the preservation temperature detection component 352 may include a plurality of sensors disposed at different positions of the refrigerated space 121 and the preservation space 21, and the temperatures of the plurality of positions are determined by the measurement results of the plurality of sensors, and the preservation detection temperature and the refrigerated detection temperature that more accurately reflect the overall temperature state of the refrigerated space 121 and the preservation space 21 are determined.

[0084] Step S704, after any one of the fresh-keeping detection temperature and the refrigeration detection temperature is greater than the preset refrigeration start-up temperature, control the refrigeration evaporator 131 to start refrigeration. The refrigeration start-up temperature can be set according to the set temperature of the refrigeration compartment 12, and can generally be set to be slightly higher than the set temperature of the refrigeration compartment 12. When the fresh-keeping detection temperature and the refrigeration detection temperature are greater than the refrigeration start-up temperature, it means that refrigeration needs to be turned on. To turn on refrigeration for the refrigeration evaporator 131, it is necessary to turn on the compressor 310 and enable the solenoid valve 330 to supply refrigerant to the refrigeration evaporator 131. After the refrigeration of the refrigeration compartment 12 is turned on, the refrigeration fan 132, the fresh-keeping damper 133, and the refrigeration damper 134 can also be turned on to provide refrigeration airflow to the fresh-keeping air duct 201 and the refrigeration space 121 outside the magnetic field preservation device 20.

[0085] Step S706, the magnetic field component 30 of the magnetic field preservation device 20 is started to apply a magnetic field to the preservation space 21 inside the magnetic field preservation device 20. The magnetic field component 30 is started after the refrigeration compartment 12 is turned on for refrigeration, and is cooled during the refrigeration process, thereby solving the problem of heat release causing the preservation space 21 or the refrigeration space 121 to heat up.

[0086] After the refrigeration evaporator 131 starts the refrigeration, the fresh-keeping detection temperature and the refrigeration detection temperature can be continuously detected; the fresh-keeping detection temperature and the refrigeration detection temperature are respectively compared with the preset refrigeration shutdown temperature; when the fresh-keeping detection temperature and the refrigeration detection temperature are both less than or equal to the refrigeration shutdown temperature, the refrigeration evaporator 131 is controlled to shut down the refrigeration, and the magnetic field component 30 is delayed to shut down after the refrigeration evaporator 131 shuts down the refrigeration. That is, after the refrigeration evaporator 131 is turned off, the magnetic field component 30 is delayed to shut down, and the residual cold in the refrigeration evaporator 131 and the refrigeration air duct 123 can be used to maintain the cooling of the magnetic field component 30, so that the magnetic field component 30 can run for a longer time, and the magnetic field preservation effect is improved. The refrigeration shutdown temperature is set according to the set temperature of the refrigeration compartment 12, and can generally be set to be slightly lower than the set temperature of the refrigeration compartment 12.

[0087] During the delay period, that is, when the refrigeration evaporator 131 is turned off for refrigeration and the magnetic field assembly 30 is still turned on, the refrigeration damper 134 is closed, and the refrigeration fan 132 and the fresh-keeping damper 133 are kept open; after the magnetic field assembly 30 is turned off, the refrigeration fan 132 and the fresh-keeping damper 133 are closed. Thus, 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.

[0088] After the fresh-keeping detection temperature and the refrigeration detection temperature are respectively compared with the preset refrigeration shutdown temperature, the refrigeration adjustment can be performed according to the comparison result. Specifically, when the fresh-keeping 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 fresh-keeping 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 refrigeration detection temperature is less than or equal to the refrigeration shutdown temperature and the fresh-keeping detection temperature is greater than the refrigeration shutdown temperature, the refrigeration damper 134 is closed, and the refrigeration evaporator 131 is kept refrigerated, the refrigeration fan 132 is turned on, and the fresh-keeping damper 133 is opened.

[0089] In addition to the refrigeration control of the refrigerating compartment 12, the control method of this embodiment can further control the freezing and refrigeration, that is, after controlling the refrigerating evaporator 131 to turn off the refrigeration, it also includes: obtaining the temperature of the freezing compartment 13 detected by the freezing temperature detection component 353 to obtain the freezing detection temperature; comparing the freezing detection temperature with the preset freezing shutdown temperature; if the freezing detection temperature is greater than the freezing shutdown temperature, controlling the solenoid valve 330 to supply the refrigerant to the freezing evaporator 141 to refrigerate the freezing compartment 13. 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 from refrigerating the freezing compartment 13. That is, the refrigeration of the refrigerating compartment 12 and the freezing compartment 13 is completed. The freezing shutdown temperature and the freezing start temperature can also be set by the set temperature of the freezing compartment 13, so that the temperature in the freezing compartment 13 is maintained within the set temperature range.

[0090] Generally speaking, the freezing refrigeration time is longer than the refrigeration time. Therefore, after the refrigeration is completed, the freezing refrigeration state is further determined, and the freezing refrigeration time is used to further extend the time for the magnetic field component 40 to apply the magnetic field.

[0091] When the refrigeration evaporator 131 is turned off for refrigeration and the freezing evaporator 141 is turned on for refrigeration, the refrigeration damper 134 is closed, the refrigeration fan 132 is turned on, and the fresh-keeping damper 133 is turned on. That is, during the refrigeration process of the freezing chamber 13, the magnetic field component 30 is also kept on for cooling, and the cold leaked from the freezing chamber to the refrigeration chamber is used to dissipate heat from the magnetic field component 30.

[0092] After the magnetic field assembly 30, the refrigeration fan 132, and the fresh-keeping damper 133 are turned off, the method may further include: controlling the refrigeration fan 132 and the fresh-keeping damper 133 to start at preset periodic intervals to allow air to flow inside the magnetic field fresh-keeping device 20. By starting the refrigeration fan 132 at intervals, the air flow in the closed fresh-keeping space 21 is disturbed regularly, so that the temperature of the magnetic field fresh-keeping device 20 is kept uniform, and local temperature rise is avoided.

[0093] In the control method of the refrigerator with magnetic field preservation function of the above embodiment, when the preservation detection temperature or the refrigeration detection temperature is greater than the refrigeration start-up temperature, after the refrigeration compartment 12 is turned on to refrigerate, the magnetic field component 30 of the magnetic field preservation device 20 is controlled to start, and a magnetic field is applied to the preservation space 21 inside the magnetic field preservation device 20. During the refrigeration process, the magnetic field component 30 is cooled at the same time to prevent heat from affecting the preservation space 21 or the refrigeration space 121, thereby improving the storage quality. The magnetic field component 30 extends the application time of the magnetic field as much as possible to improve the magnetic field preservation effect.

[0094] Figure 81 is a schematic diagram of an execution flow of a control method for a refrigerator with a magnetic field preservation function according to an embodiment of the present invention. The control method comprises:

[0095] Step S802, obtaining the fresh-keeping temperature T_Snr1 and the refrigerated temperature T_Snr2 detected by the refrigerated temperature detection component 351 and the fresh-keeping temperature detection component 352;

[0096] Step S804, determine whether the fresh-keeping detection temperature T_Snr1 and the refrigeration detection temperature T_Snr2 satisfy T_Snr1≥T1_on and / or T_Snr2≥T1_on, that is, whether either the fresh-keeping detection temperature or the refrigeration detection temperature is greater than the preset refrigeration start-up temperature T1_on

[0097] Step S806, start the compressor 310, so that the refrigeration evaporator 131 starts cooling, and turn on the refrigeration fan 132, the refrigeration damper 134, the fresh-keeping damper 133, and the magnetic field assembly 30;

[0098] Step S808, determining whether the fresh-keeping detection temperature T_Snr1 and the refrigeration detection temperature T_Snr2 satisfy T_Snr1<T1_off and T_Snr2≥T1_off, where T1_off is a preset refrigeration shutdown temperature. If so, close the fresh-keeping damper 133 and keep the refrigeration damper 134 open until T_Snr2<T1_off;

[0099] Step S810, determine whether the fresh-keeping detection temperature T_Snr1 and the refrigeration detection temperature T_Snr2 satisfy T_Snr1 ≥ T1_off and T_Snr2 < T1_off,

[0100] Step S812, if the conditions are met, close the refrigeration damper 134, stop the refrigeration of the refrigeration evaporator 131, and keep the refrigeration fan 132 and the fresh-keeping damper 133 open until T_Snr1<T1_off, that is, the magnetic field fresh-keeping device 20 is exclusively cooled;

[0101] Step S814, obtaining the freezing detection temperature T_Snr3 detected by the freezing temperature detection component 353, and determining whether T_Snr3 satisfies T_Snr3≥T2_off, where T2_off is the freezing shutdown temperature;

[0102] Step S816, if T_Snr3 ≥ T2_off, the solenoid valve 330 switches the refrigerant to the freezing evaporator 141, so that the freezing evaporator 141 is refrigerated, the freezing fan 142 is turned on, and the fresh-keeping damper 133 is opened. That is, if the refrigeration evaporator 131 is turned off and the freezing evaporator 141 is turned on, the refrigeration damper 134 is closed, and the refrigeration fan 132 and the fresh-keeping damper 133 are kept open, and the cold leaked from the freezing to the refrigeration is used to dissipate the heat of the magnetic field component 30;

[0103] Step S818, if T_Snr3<T2_off, then turn off the compressor 310, and keep the fresh air door 133 and the refrigeration fan 132 open;

[0104] Step S820, delay closing of the fresh-keeping damper 133, the refrigeration fan 132, and the magnetic field assembly 30, for example, delay closing of the fresh-keeping damper 133 and the refrigeration fan 132 after shutting down the compressor 310, and the delay time can be set to 10 minutes.

[0105] So far, the technical solution of the present invention has been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to 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 embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present invention will fall within the protection scope of the present invention.

Claims

1. A control method for a refrigerator with a magnetic field preservation function, wherein the refrigerator comprises: A box body is defined with a refrigerated compartment, a magnetic field preservation device arranged in the refrigerated compartment, and a refrigerated evaporator for cooling the refrigerated compartment, and the control method includes: Respectively acquiring the temperature of the magnetic field preservation device and the temperature of the external refrigeration space of the magnetic field preservation device to obtain a preservation detection temperature and a refrigeration detection temperature; After either the fresh-keeping detection temperature or the refrigeration detection temperature is greater than a preset refrigeration start-up temperature, the refrigeration evaporator is controlled to start refrigeration, and then the magnetic field component of the magnetic field fresh-keeping device is started to apply a magnetic field to the fresh-keeping space inside the magnetic field fresh-keeping device; The refrigerated compartment adopts air cooling, the refrigerated compartment is provided with a refrigerated air duct, and the magnetic field preservation device is provided with a fresh-keeping air duct surrounding the fresh-keeping space; The fresh-keeping air duct is controlled to communicate with the refrigeration air duct to form an airflow surrounding the fresh-keeping space, which is used to achieve refrigeration and cooling of the magnetic field fresh-keeping device and take away the heat generated by the operation of the magnetic field component; After the step of starting the refrigeration of the refrigeration evaporator, the following steps are further included: Continuously detecting the fresh-keeping detection temperature and the refrigeration detection temperature; Comparing the fresh-keeping detection temperature and the refrigeration detection temperature with the preset refrigeration shutdown temperature respectively; When the fresh-keeping detection temperature and the refrigeration detection temperature are both less than or equal to the refrigeration shutdown temperature, the refrigeration evaporator is controlled to shut down refrigeration, and the magnetic field component is shut down with a delay after the refrigeration evaporator shuts down refrigeration.

2. The control method according to claim 1, wherein A refrigeration air duct is arranged at the back of the refrigeration compartment, and the refrigeration evaporator is arranged in the refrigeration air duct; The refrigerator further comprises: a fresh-keeping air door for connecting or disconnecting the refrigeration air duct and the fresh-keeping air duct, a refrigeration air door for connecting or disconnecting the refrigeration air duct and the refrigerated space outside the magnetic field fresh-keeping device, and a refrigeration fan for promoting the formation of an airflow from the refrigeration air duct to the fresh-keeping air duct and / or the refrigerated space, and After the step of controlling the refrigeration evaporator to start refrigeration, the method further includes: The refrigeration fan, the fresh-keeping air door, and the refrigeration air door are opened to provide refrigeration airflow to the fresh-keeping air duct and the refrigerated space outside the magnetic field fresh-keeping device.

3. The control method according to claim 2, wherein When the refrigeration evaporator is turned off for refrigeration and the magnetic field component is still turned on, the refrigeration damper is closed, and the refrigeration fan and the fresh-keeping damper are kept open; After the magnetic field assembly is turned off, the refrigeration fan and the fresh-keeping air door are turned off.

4. The control method according to claim 2, wherein after the step of comparing the fresh-keeping detection temperature and the refrigeration detection temperature with the preset refrigeration shutdown temperature respectively, the method further comprises: When the fresh-keeping 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 fresh-keeping damper is closed, and the refrigeration evaporator is kept refrigerated, the refrigeration fan is turned on, and the refrigeration damper is opened; When the refrigeration detection temperature is less than or equal to the refrigeration shutdown temperature and the fresh-keeping detection temperature is greater than the refrigeration shutdown temperature, the refrigeration damper is closed, and the refrigeration evaporator is kept refrigerated, the refrigeration fan is turned on, and the fresh-keeping damper is opened.

5. The control method according to claim 2, wherein a freezing compartment is further defined in the cabinet, the refrigerator further comprises a freezing evaporator for cooling the freezing compartment, a solenoid valve for switching the refrigerant supply to the refrigerating evaporator and / or the freezing evaporator, and after controlling the refrigerating evaporator to turn off refrigeration, the method further comprises: Acquiring the temperature of the freezing compartment to obtain a 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.

6. The control method according to claim 5, wherein after the step of comparing the freezing detection temperature with a 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 refrigerating the freezing compartment.

7. The control method according to claim 5, wherein In the process that the refrigerating evaporator is turned off for refrigeration and the freezing evaporator is turned on for refrigeration, the refrigerating damper is closed, and the refrigerating fan and the fresh-keeping damper are kept open.

8. The control method according to claim 3, wherein after closing the magnetic field component, the refrigeration fan, and the fresh-keeping air door, it also includes: The refrigeration fan and the fresh-keeping air door are controlled to start at preset periodic intervals to allow air to flow inside the magnetic field fresh-keeping device.

9. A refrigerator with a magnetic field preservation function, comprising: A box body, defining a refrigerated compartment therein; A magnetic field preservation device is arranged in the refrigerated room; a refrigeration system, comprising a refrigeration evaporator, for refrigerating the refrigeration compartment; A controller comprises 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 8 is implemented.

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