Refrigerator with freezer storage unit

Abstract

A refrigerator with a freezing storage device includes a cabinet with a storage compartment for achieving an internal freezing storage function, and a freezing storage device disposed in the storage compartment. The freezing storage device includes a storage box with a freezing storage space defined therein, a storage detection device disposed in the storage box and used to detect the state of the stored items in the freezing storage space, and a plurality of sets of electromagnetic coils disposed laterally side by side on the outside of the storage box, for determining a corresponding magnetic field application mode according to the state of the stored items. The magnetic field application mode includes stopping the growing magnetic field, starting a part of the plurality of sets of electromagnetic coils, and starting all of the plurality of sets of electromagnetic coils. The solution of the present invention determines a corresponding magnetic field application mode according to the state of the stored items detected by the storage detection device, adapts the magnetic field in the freezing storage space to the freezing process, improves the quality of the freezing storage, and reduces the heat dissipation of the electromagnetic coils and the magnetization effect on external members.

Description

[Technical field]

[0001] The present invention relates to a refrigerated freezer storage device, and more particularly to a refrigerator equipped with a freezer storage device. [Background technology]

[0002] Although users are increasingly paying attention to the freshness of preserved items, most of the prior art focuses on refrigerated freshness and neglects frozen freshness. However, frozen foods such as meat, fish, and shrimp often lose their juices after freezing, resulting in poor taste and blackening. In particular, some high-quality foods that require freezing are significantly degraded in quality after freezing, which also affects the user experience.

[0003] In order to improve the quality of frozen storage, the prior art has solutions such as increasing the freezing speed of food by quick freezing or putting food in a supercooled state, but in such cases, it is necessary to increase the freezing capacity of the refrigerator, which also leads to an increase in the energy consumption of the refrigerator. Therefore, the development of a method for more efficiently improving the quality of frozen storage has become an urgent technical challenge for refrigerator developers.

[0004] Theoretical studies have shown that magnetic fields have a strong effect on the formation of ice crystals during the freezing process. In the field of refrigerators, the introduction of magnetic fields to freeze freshness has been actively studied, but the reality is that magnetic field-assisted freezing is not effective enough in practical applications of refrigerators. Summary of the Invention

[0005] An object of the present invention is to provide a refrigerator and a refrigeration control method thereof that effectively improve the freezing storage quality.

[0006] A further object of the present invention is to match the magnetic field and frozen freshness requirements.

[0007] In particular, the refrigerator equipped with a freezer storage device provided by the present invention is a refrigerator equipped with a freezer storage device, the freezer storage device comprising: a cabinet having a storage compartment therein for achieving a freezer storage function; and a freezer storage device arranged in the storage compartment, the freezer storage device comprising: a storage box having a freezer storage space defined therein; a storage detection device arranged in the storage box and configured to detect a storage state in the freezer storage space; and a plurality of sets of electromagnetic coils arranged side by side on the outside of the storage box and configured to determine a corresponding magnetic field application mode according to the storage state, the magnetic field application mode being: Stopping the generation of magnetic fields , some of the sets of electromagnetic coils Operation and all of the sets of electromagnetic coils Operation and a plurality of sets of electromagnetic coils including:

[0008] Each set of the electromagnetic coils includes a first coil provided at the top of the storage box and a second coil provided at the bottom of the storage box, facing each other, and the first coil and the second coil may be connected in series or in parallel.

[0009] The refrigeration storage device may further include a magnetic frame made of a magnetic material, the magnetic frame being fitted to the outside of the storage box, and the magnetic field may pass through the magnetic frame to complete a closed loop of magnetic field lines.

[0010] A plurality of first magnetic poles are provided on the inside of the top wall of the magnetic frame at intervals along the lateral direction of the storage box. boss Each of the first boss is used to arrange a first coil of the set of electromagnetic coils, and the first coil is arranged inside the bottom wall of the magnetic frame. boss The second opposite boss is formed, and each of the second boss may be used to position a second coil of the set of electromagnetic coils.

[0011] The storage box may be provided within a space surrounded by the magnetic frame and may include an outer cylinder having a front opening, and a drawer provided within the outer cylinder so as to be removable.

[0012] An air inlet and a return air port are opened on a rear wall of the outer cylinder, the air inlet may be connected to a ventilation duct of the refrigerator or communicated with an evaporator of the refrigerator and used to introduce a cooling air flow into the storage box, and the return air port may be connected to a return air duct of the refrigerator or communicated with the evaporator of the refrigerator and used to return the air flow after heat exchange to the return air duct of the refrigerator or the evaporator.

[0013] The refrigerator equipped with the above-mentioned freezing storage device further includes an open / close detector, the open / close detector being configured to detect the open / closed state of the storage box, the storage detection device being further configured to detect an internal temperature change before and after the storage box is opened and closed in an area corresponding to each set of the electromagnetic coils in the freezing storage space, and the refrigeration controller starts freezing the storage box when the internal temperature change range of the area corresponding to any one set of the electromagnetic coils is greater than a first set threshold, and closes the electromagnetic coil when the internal temperature change range of the corresponding area is greater than a first set threshold. Operation The magnetic field may be released by

[0014] The electromagnetic coils are provided in two sets, and the two sets of electromagnetic coils are operated simultaneously. Operation In the magnetic field mode, the magnetic pole directions of the two sets of electromagnetic coils may be opposite.

[0015] The electromagnetic coil Operation Thereafter, the magnetic field generation may be stopped when the internal temperature of the corresponding region cools to a second set threshold.

[0016] When the internal temperatures of the areas corresponding to the multiple sets of electromagnetic coils are all cooled to a third set threshold, the refrigeration controller stops freezing of the storage box, performs normal refrigeration control of the storage box according to freezing start conditions and freezing stop conditions preset in the storage box, and maintains a freezing storage environment of the storage box, and the third set threshold may be lower than the second set threshold.

[0017] In the refrigerator equipped with the freezer storage device of the present invention, the freezer storage device is provided with a plurality of sets of electromagnetic coils on the outside of the storage box, and the plurality of sets of electromagnetic coils determine the corresponding magnetic field application mode according to the state of the stored items in the freezer storage space detected by the storage detection device, so as to make the magnetic field in the freezer storage space suitable for the freezing process, on the one hand, improve the freezer storage quality, and meet the storage quality requirements of users for high-quality food materials. On the other hand, the electromagnetic coil heat dissipation and the magnetization influence on the external members of the freezer storage device can also be reduced by targeted adjustment.

[0018] Furthermore, in a refrigerator equipped with the freezing storage device of the present invention, a closed path of magnetic field lines is formed via a magnetic frame, an assembly structure of an electromagnetic coil is provided, the occupied space is reduced, and the practicality is improved.

[0019] Furthermore, in a refrigerator equipped with the freezing storage device of the present invention, an even number of sets of electromagnetic coils, for example, two sets of electromagnetic coils, may be provided. Operation In the situation of the magnetic field mode, by reversing the magnetic pole direction of the magnetic field, the magnetic field lines can be made more uniform, and the external magnetization effect can be canceled or reduced.

[0020] Furthermore, in a refrigerator equipped with the freezing and storage device of the present invention, after an opening and closing event occurs in the storage box, the internal temperature changes before and after each area of ​​the storage box are obtained, and it is determined according to the internal temperature changes in each area whether new ingredients have been added or the ingredients need to be re-frozen, and a corresponding magnetic field application mode is started to form an appropriate magnetic field, so that the ingredients are frozen in a magnetic field environment, the growth of ice crystal nuclei is suppressed, the growth rate of ice crystals is faster than the migration rate of water molecules, the grown ice crystals are small, damage to cells is reduced, loss of juice is avoided, the deliciousness of ingredients is ensured, the quality of frozen storage is improved, and users' requirements for the preservation quality of high-quality ingredients are met.

[0021] Furthermore, a refrigerator equipped with the freezer storage device of the present invention can improve the opening and closing conditions of the electromagnetic field and apply the magnetic field during the main formation period of ice crystals, thereby increasing the efficiency of use of the magnetic field and reducing the impact of the magnetic field on other components outside the storage box, while also improving the energy efficiency of the refrigerator.

[0022] In order that those skilled in the art may more fully understand the above and other objects, advantages and features of the present invention, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. [Brief description of the drawings]

[0023] Some specific embodiments of the present invention will now be described in detail, by way of example and not limitation, with reference to the accompanying drawings, in which the same or similar elements or parts are given the same reference numerals, and in which those skilled in the art will appreciate that the accompanying drawings are not necessarily drawn to scale. [Figure 1] 1 is a schematic perspective view of a refrigerator equipped with a freezer storage device according to an embodiment of the present invention; [Diagram 2] 1 is a schematic diagram of a freezer storage device of a refrigerator equipped with a freezer storage device according to an embodiment of the present invention; [Diagram 3] 1 is a schematic diagram of a combination of a magnetic frame and a storage box in a refrigerator equipped with a refrigeration storage device according to an embodiment of the present invention; [Figure 4]1 is a schematic diagram of a magnetic frame in a refrigerator equipped with a freezer storage device according to an embodiment of the present invention; [Diagram 5] 1 is a schematic view of an outer cylinder of a storage box in a refrigerator equipped with a freezer storage device according to an embodiment of the present invention; [Figure 6] 1 is a schematic diagram of an electromagnetic coil in a refrigerator with a freezer storage device according to an embodiment of the present invention. [Figure 7] 4 is a schematic diagram of a magnetic field formed in a freezer storage device of a refrigerator equipped with the freezer storage device according to an embodiment of the present invention; [Figure 8] 10 is a schematic diagram of another magnetic field formed in a freezer storage device of a refrigerator equipped with the freezer storage device according to an embodiment of the present invention; [Figure 9] FIG. 2 is a block diagram of a control system for a refrigerator equipped with a freezer storage device according to an embodiment of the present invention. [Figure 10] 1 is a schematic diagram of a refrigeration control method for a refrigerator equipped with a refrigeration storage device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] FIG. 1 is a schematic perspective view of a refrigerator 10 equipped with a freezer storage device according to an embodiment of the present invention. The refrigerator 10 of this embodiment generally includes a storage body 120, a door body 110, and a freezer system (not shown). At least one storage compartment with a front opening is defined in the storage body 120, and there are usually a plurality of compartments such as a refrigerated storage compartment, a freezer storage compartment, and a temperature-variable storage compartment. The specific number and functions of the storage compartments may be set according to predetermined needs. The refrigerator 10 of this embodiment includes at least a freezer storage compartment or a temperature-variable storage compartment having a freezer temperature range (i.e., realizing a freezer storage environment), that is, there is a storage compartment that achieves a freezer storage function in the storage body 120. The temperature range of the freezer storage can generally be set to -14°C to -22°C.

[0025] The refrigerator 10 of this embodiment may be an air-cooled refrigerator, in which an air flow path system is provided in the body 120, and the cooling air that has been heat exchanged in the evaporator is sent from the air outlet to the storage compartment by using a fan, and then returned to the duct from the return air outlet to achieve freezing. The body 120, door 110, and freezing system of such a refrigerator are well known and easily implemented by those skilled in the art, and therefore, in order not to obscure the points of the invention of this application, the body 120, door 110, and freezing system themselves will not be described in detail later.

[0026] A freezer storage device 200 is installed inside the freezer storage compartment. The freezer storage device 200 forms an independent closed freezer storage space, and the storage quality of the freezer storage space can be improved by the magnetic field. Under the action of a magnetic field of a certain strength, the free range of water molecules can be restricted during the freezing process, specifically, the hydrogen bonds at the nuclei of water molecules are broken. Since the growth of the nuclei is inhibited, the growth rate of ice crystals is faster than the water molecule movement rate, the grown ice crystals are small, the damage to cells is small, the loss rate of juice is reduced, and the nutrition and taste of ingredients can be better maintained. In addition, the magnetic field can shorten the freezing time and inhibit the growth of microorganisms and bacteria. The refrigerator 10 of this embodiment further improves the magnetic field in a targeted manner, and further improves the freezer storage quality by optimizing the magnetic field direction and start / stop time.

[0027] FIG. 2 is a schematic diagram of a refrigerator 10 equipped with a freezer storage device 200 according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a combination of a magnetic frame 210 and a storage box 240 in a refrigerator 10 equipped with a freezer storage device 200 according to an embodiment of the present invention (drawer 242 is omitted to show the internal structure). FIG. 4 is a schematic diagram of a magnetic frame 210 in a refrigerator 10 equipped with a freezer storage device 200 according to an embodiment of the present invention. FIG. 5 is a schematic diagram of an outer cylinder 241 of a storage box 240 in a refrigerator 10 equipped with a freezer storage device 200 according to an embodiment of the present invention. FIG. 6 is a schematic diagram of an electromagnetic coil 230 in a refrigerator 10 equipped with a freezer storage device 200 according to an embodiment of the present invention.

[0028] As shown in Figs. 2 to 6, the refrigeration storage device 200 is disposed in a storage compartment, and generally includes a plurality of sets of electromagnetic coils 230, a storage box 240, a storage detection device 250, and the like.

[0029] The storage box 240 can form an independent sealed freezer storage space, so that it can provide a better freezer storage environment for specific food materials. The storage box 240 is provided within the space surrounded by the magnetic frame 210.

[0030] The storage box 240 may include an outer cylinder 241 and a drawer 242. The outer cylinder 241 is disposed in the magnetic frame 210 and has a front opening. The drawer 242 is disposed in the outer cylinder 241 so as to be retractable. The front panel of the drawer 242 forms a sealed structure together with the outer cylinder 241. When the refrigerator 10 is refrigerated by air cooling, an air inlet 243 and a return air port 244 are opened on the rear wall of the outer cylinder 241, the air inlet 243 is connected to the duct outlet of the refrigerator 10 or communicates with the evaporator (e.g., the top region of the evaporator) of the refrigerator 10 to introduce the cooling air flow into the storage box 240, and the return air port 244 is connected to the duct return air port of the refrigerator 10 or communicates with the evaporator (e.g., the bottom region of the evaporator) of the refrigerator 10 to return the air flow after heat exchange to the return air duct or evaporator of the refrigerator 10. In some embodiments, dampers (not shown) may be provided at the air inlet 243 and the return air outlet 244. The dampers are controlled to open when refrigerating air is blown. The air inlet 243 and the return air outlet 244 are arranged according to the positions and structures of the ducts and evaporator of the air-cooled refrigerator, and in some other embodiments, the return air outlet 244 may be provided on the side wall of the outer casing 241.

[0031] The storage detection device 250 is provided in the storage box 240 and configured to detect the state of the stored items in the freezer storage space. The storage detection device 250 may be an infrared sensor capable of scanning the temperature distribution in the freezer storage space of the storage box 240, or may be a plurality of independent infrared sensors (each infrared sensor is used to detect the temperature status of a certain area in the freezer storage space). The storage detection device 250 can detect the internal temperature change at each position in the freezer storage space. In some embodiments, the storage detection device 250 may be provided inside the top wall of the outer cylinder 241.

[0032] The multiple sets of electromagnetic coils 230 are arranged side by side on the outside of the storage box 240, and determine the corresponding magnetic field application mode according to the state of the stored items. The magnetic field application mode is as follows: Stopping the generation of magnetic fields , 1 set of electromagnetic coils Operation , any set of electromagnetic coils Operation , and all of the electromagnetic coils Operation The magnetic field application mode of the electromagnetic coil 230 can be adjusted according to the detection result of the storage detection device 250.

[0033] In some embodiments, each set of electromagnetic coils 230 includes a first coil 231 provided at the top of the storage box 240 and a second coil 232 provided at the bottom of the storage box 240, and the first coil 231 and the second coil 232 are connected in series or in parallel. Activation / Deactivation This forms a magnetic field in the freezer storage space between the first coil 231 and the second coil 232. A plurality of sets of electromagnetic coils 230 can cover the entire freezer storage space.

[0034] In this embodiment, an even number of sets of electromagnetic coils 230 may be used. In particular, two sets of electromagnetic coils 230 are used, which correspond to the left and right halves of the storage box 240, respectively. For example, when it is detected that new ingredients have been placed in the left half of the storage box 240, the left electromagnetic coil 230 is turned on. OperationWhen it is detected that new ingredients have been placed in the right half of the storage box 240, the right electromagnetic coil 230 is turned on. Operation When a large amount of new ingredients are added, the two sets of electromagnetic coils 230 are turned on at the same time. Operation Two sets of coils 230 can be simultaneously Operation Under the magnetic field mode, the magnetic pole directions of the two sets of electromagnetic coils 230 can be opposite, so that the magnetic field lines can be more uniform and the external magnetization effect can be canceled or reduced. The magnetic field application mode can be flexibly adjusted, so that the magnetic field in the freezer storage space can be adapted to the freezing process, while improving the freezer storage quality and meeting the users' storage quality requirements for high-end food materials.

[0035] In some embodiments, the refrigerator 10 of the present embodiment further includes a magnetic frame 210. The magnetic frame 290 is made of a magnetic material and is fitted to the outside of the storage box 240, and the magnetic field passes through the magnetic frame 210 to complete a closed loop of magnetic field lines. The magnetic material may be a soft magnetic material or a hard magnetic material, for example, a soft magnetic material is used, which has the characteristics of low coercive force and high magnetic permeability, and the magnetic frame 210 is used to collect the magnetic field, reduce the external emission of the magnetic field, and reduce interference with other members outside the freezer storage apparatus 200 (for example, magnetization of other members, etc.).

[0036] A plurality of first magnetic poles are provided on the inside of the top wall of the magnetic frame 210 at intervals along the lateral direction of the storage box 240. boss 211 was formed, and each first boss 211 is used to place the first coil 231 of the set of electromagnetic coils, and the first coil 231 is disposed inside the bottom wall of the magnetic frame 210. boss The second opposite 211 boss 212 is formed, and each second boss 212 is used to place the second coil 232 of the set of electromagnetic coils. boss The second coil 232 is fitted around the outer periphery of the second boss In the case of two sets of electromagnetic coils 230, the first boss 211 and 2nd bossThere may be two 212s.

[0037] In some embodiments, the magnetic frame 210 is a rectangular tube with through openings in the front and rear directions, i.e., a frame body with a curved cross section. The rectangular tube has through openings at the front and rear ends, respectively, for accommodating various types of storage boxes 240. The top and bottom walls of the magnetic frame 210 are provided with first boss 211, No. 2 boss 212 is formed. boss 211, No. 2 boss 212 respectively provide mounting structures for the first coil 231 and the second coil 232. The magnetic frame 210 provides a closed path for the magnetic field lines, provides an assembly structure for the electromagnetic coil 230, reduces the occupied space, and improves the practicality.

[0038] No. 1 boss 211, No. 2 boss The cross section of 212 may be rectangular, circular or elliptical. In the case of a rectangular cross section, the first boss 211, No. 2 boss The first coil 231 and the second coil 232 are adapted to the structure of the storage body 120. boss 211, No. 2 boss 212 and configured to be correspondingly rectangular, circular, or elliptical. In some embodiments, the first coil 231 and the second coil 232 are configured as mirror images.

[0039] The first coil 231 and the second coil 232 may be in the shape of a flat frame, wound in the circumferential direction, and the magnetic pole direction of the magnetic field becomes the first coil when a current is applied. boss 211, No. 2 boss It is perpendicular to 212. boss 211, No. 2 boss The height of 212 is adapted to the thickness of the first coil 231 and the second coil 232, and the inner walls of the ring-shaped frame are basically aligned, which is convenient for the arrangement of the storage box 240. In some other embodiments, the first coil 231 and the second coil 232 may be a flattened elliptical ring or a circular ring.

[0040] The magnetic frame 210 guides the magnetic field generated by the electromagnetic coil 230 to avoid non-uniformity of the magnetic field and its influence on other components outside the storage box 240, and the electromagnetic coil 230 forms a magnetic field in the freezer storage space that is uniform and has sufficient strength to meet the requirements for improving the quality of freezer storage.

[0041] Generally, the magnetic field configuration structure in which the two sets of electromagnetic coils 230 each include a first coil 231 and a second coil 232 can meet various control requirements of magnetic field assisted refrigeration and make the magnetic field type more flexible. In some special use scenarios, those skilled in the art may provide more electromagnetic coils 230. The two sets of coils 230 can be used simultaneously. Operation Under the magnetic field mode, the magnetic pole directions of the two sets of electromagnetic coils 230 are opposite, which can make the magnetic field lines more uniform and can cancel or reduce the external magnetization effect. Each set of electromagnetic coils 230 can be independently controlled to realize various magnetic field application modes.

[0042] 7 and 8 are schematic diagrams of a magnetic field formed in a refrigerator having a freezer storage device according to an embodiment of the present invention. The magnetic field in FIG. 7 is formed by simultaneous induction of two sets of electromagnetic coils 230. Operation In this situation, the magnetic pole directions of the two sets of electromagnetic coils 230 are opposite to each other, and the magnetic fields generated by the two sets of coils 230 overlap each other, which helps to reduce the leakage of the external magnetic field, increase the effective magnetic flux density per unit current, and reduce the heat dissipation of the coils 230. The external magnetic fields generated by the two sets of coils overlap each other, which does not affect the magnetic flux density in the freezer storage space, and the magnetic frame 210 can be omitted, which can save the cost of the magnetic freshness preservation device.

[0043] If the user places food on only one side of the freezer storage space, only the electromagnetic coil 230 on that side is turned on. Operation It is especially suitable for the wide drawers in the freezer compartment of French refrigerators. The entire freezer storage space is wide, and the storage state is detected by only using the electromagnetic coil on one side. OperationThis can save power consumption and reduce the heat dissipation of the coil. Operation This is suitable for situations where magnetic field assisted refrigeration is required for the left region of the freezer storage space. Similarly, in situations where magnetic field assisted refrigeration is required for the right region of the freezer storage space, the right electromagnetic coil 230 is Operation It is possible.

[0044] The refrigerator 10 of this embodiment combines the magnetic field control of the electromagnetic coil 230 with the freezing control to reliably freeze food in a magnetic field environment and achieve a fresh freezing effect. Fig. 9 is a block diagram of a control system for the refrigerator 10 equipped with the freezing storage device 200 according to one embodiment of the present invention. The refrigerator 10 further includes a storage detection device 250, an open / close detector 270, and a freezing controller 300.

[0045] The storage detection device 250 is provided in the outer cylinder 241 of the storage box 240 and is configured to detect the temperature inside the drawer 242, and further to detect the internal temperature changes before and after the storage box 240 is opened and closed in the areas corresponding to each set of electromagnetic coils 230 in the freezer storage space, for example, the temperature changes in the left and right areas of the freezer storage space.

[0046] The open / close detector 270 is configured to detect the open / close state of the drawer 242. After the drawer 242 is pulled out and closed, with the help of the storage detection device 250, it can be detected whether new ingredients have been put in or the existing ingredients need to be re-frozen. Then, the electromagnetic coil 230 can be combined with the refrigeration system to realize magnetic field assisted freezing, which improves the freezing freshness effect of the ingredients.

[0047] The refrigeration controller 300 includes a memory 310 and a processor 320. A control program 311 is stored in the memory 310, and when the control program 311 is executed by the processor 320, it controls the electromagnetic coil 230 and the refrigeration system to realize a corresponding refrigeration control method. Various sensors provide detection means for magnetic field control to meet the control needs of the control method.

[0048] The refrigeration controller 300 is configured to start freezing the storage box 240 when the internal temperature change width before and after the storage box 240 is opened and closed in an area corresponding to any electromagnetic coil is greater than a first set threshold. The internal temperature change of the storage box 240 reflects the state of the stored food, and if the internal temperature change width of a certain area in the freezer storage space is large, it is determined whether new food has been put into the storage box 240 or the temperature of the food has risen and needs to be re-frozen, and if the internal temperature change width is small, the food may still be in a frozen state. If the internal temperature change width is greater than the first set threshold, the refrigeration controller 300 starts freezing the storage box 240. The first set threshold is set to 2 to 8°C and can be flexibly set according to the freezing set temperature. For example, if the internal temperature change width of either the left area or the right area of ​​the freezer storage space is greater than the first set threshold, freezing is started.

[0049] The electromagnetic coils whose corresponding area has an internal temperature change range greater than the first set threshold are simultaneously Operation and release the magnetic field.

[0050] During freezing of the storage box 240, the auxiliary effect of the magnetic field improves the freezing quality and sterilization effect of the stored items. In addition, the above starting conditions prevent heat dissipation and increased energy consumption due to the formation of a magnetic field for a long period of time, while avoiding the magnetization effect on other members outside the storage box 240.

[0051] Electromagnetic coil 230 Operation Then, when the internal temperature of the corresponding area is cooled to a second set threshold, the magnetic field generation is stopped, and as the freezing process progresses, the magnetic field required for auxiliary freezing is correspondingly reduced, and the electromagnetic coil 230 is closed to further reduce energy consumption, and the second set threshold is set to -10~12°C, and within this temperature range, the stored items are basically frozen.

[0052] Then, when the internal temperatures of the areas corresponding to all the electromagnetic coils 230 are continuously cooled to the third set threshold, the refrigeration controller 300 stops the refrigeration of the storage box 240, and the third set threshold is smaller than the second set threshold, set according to the refrigeration power-off temperature of the storage box 240, and is generally smaller than the set refrigeration power-off temperature. That is, after the operation of the electromagnetic coil 230 is finished, the refrigeration is delayed for a certain period of time. Since this refrigeration is performed after the storage box 240 is opened, by setting the third set threshold low, it is possible to perform a certain degree of supercooling and improve the quality of the frozen storage.

[0053] After stopping the freezing of the storage box 240, the refrigeration controller 300 is further configured to perform normal refrigeration control of the storage box 240 according to the freezing start conditions and freezing stop conditions preset in the storage box 240, thereby maintaining the freezing storage environment of the storage box 240, and the electromagnetic coil 230 generates a magnetic field according to a preset opening and closing method during the period when the refrigeration controller 300 performs the normal refrigeration control of the storage box 240.

[0054] After the magnetic field assisted freezing is completed, normal freezing control of the storage box 240 is resumed, that is, freezing control of the storage box 240 is performed according to the freezing start condition and the freezing stop condition preset in the storage box 240. The freezing start condition and the freezing stop condition are similarly set according to the set temperature of the storage box 240, and freezing starts when the temperature is higher than the freezing start temperature and stops when the temperature is lower than the freezing stop temperature.

[0055] The step of controlling the freezing of the storage box 240 according to the freezing start condition and the freezing stop condition preset in the storage box 240 can also use magnetic field assisted freezing so that the storage quality does not deteriorate when some ice crystals are regenerated. One opening and closing method is as follows: the magnetic field is started / stopped at the same time as the freezing of the storage box 240 is started / stopped, that is, the magnetic field and freezing are started / stopped at the same time. As an alternative solution, the magnetic field is started when the freezing of the storage box 240 is started, and the magnetic field is stopped before the freezing of the storage box 240 is stopped, that is, the magnetic field is only started at the freezing start stage. According to actual measurements, even if the magnetic field is started only at the freezing start stage, the storage quality is not significantly reduced compared to the storage quality when the magnetic field is started / stopped at the same time as freezing.

[0056] In addition, as another opening and closing method during a long-term freezing process, during the process of controlling the freezing of the storage box 240 according to the freezing start conditions and freezing stop conditions preset in the storage box 240, the magnetic field is started according to a set period, i.e., the magnetic field is started periodically.

[0057] In another embodiment, when the storage box 240 is normally refrigerated and starts the magnetic field, the two sets of electromagnetic coils 230 generate magnetic fields alternately, for example, in the first time, the left electromagnetic coil 230 Operation Then, in the second round, the right electromagnetic coil Operation And so on.

[0058] When applied to an air-cooled refrigerator, the step of initiating freezing of the storage box 240 is to open the air inlet and blow a flow of cooling air into the air inlet 243 .

[0059] 10 is a schematic diagram of a method for controlling freezing of a refrigerator equipped with a freezing storage device according to an embodiment of the present invention. The flow of this embodiment is a specific application example of the method for controlling freezing of a refrigerator, and the execution sequence of some steps can be adjusted. The flow includes the following steps: Step S902: Detect the open / closed state of the storage box 240; Step S904: Determine whether the storage box 240 has been opened and then closed, i.e., determine whether an opening / closing event has occurred in the storage box 240; Step S906: Obtain the internal temperature change before and after the storage box 240 is opened and closed, and determine whether the internal temperature change range is greater than the first set threshold, i.e., determine whether new food has been placed in the storage box 240 or whether the temperature of the food has risen and needs to be refreezed; the first set threshold is set at 2-8°C. If the internal temperature change range is small and the food does not need to be refreezed, perform normal freezing control for freezer storage, i.e., perform freezing control according to the set power-on temperature threshold and power-off temperature threshold. Step S908: Start freezing and blow air into the storage box 240. Step S910: Determine an area of ​​the freezer storage space where the internal temperature change range is greater than the first set threshold, and activate the electromagnetic coil 230 corresponding to the area. Operation When the internal temperature change range of the left region of the freezer storage space is greater than the first set threshold, the magnetic field application mode is Operation When the internal temperature change range of the right region of the freezer storage space is greater than the first set threshold, the magnetic field application mode is the right electromagnetic coil 230 Operation When the internal temperature change range of the left and right regions of the freezer storage space is greater than the first set threshold, the magnetic field application mode is the simultaneous application of the electromagnetic coils on both sides. Operation It is. Step S912: Continuously detect the internal temperature of the storage box 240; Step S914: Determine whether the internal temperature of the storage box 240 is lower than a second set threshold value (e.g., −10 to 12° C.), that is, whether the basic freezing step is completed; Step S916: Close the magnetic field; Step S920: Determine whether the internal temperature of the storage box 240 is less than a third set threshold, which is less than the second set threshold and is set according to the freezing power-off temperature set in the storage box 240, and is generally set less than the set freezing power-off temperature. Step S922: Stop freezing the storage box 240, and perform normal freezing control of the storage box 240 according to the freezing start conditions and freezing stop conditions preset in the storage box 240, maintain the freezing storage environment of the storage box 240, and start the magnetic field according to the opening and closing method preset during the normal freezing control period.

[0060] The refrigerator 10 equipped with the freezing and storage device of this embodiment freezes food ingredients in a magnetic field environment, target-controls the direction and start / stop of the magnetic field, inhibits the growth of ice crystal nuclei, reduces damage to cells, avoids loss of juice, ensures better taste of food ingredients, improves the freezing and storage quality, and meets users' storage quality requirements for high-quality food ingredients.

[0061] Although several exemplary embodiments of the present invention have been described in detail herein, it is understood that those skilled in the art can directly determine and deduce many other variations and modifications in accordance with the principles of the present invention based on the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention is intended to cover such variations or modifications.

Claims

1. A storage body having a storage compartment therein for achieving a freezer storage function; A refrigerator including a freezing storage device disposed in the storage compartment, The refrigeration storage device includes: A storage box having a freezer storage space defined therein; A storage detection device is provided in the storage box and configured to detect the state of items stored in the freezer storage space; A plurality of sets of electromagnetic coils are arranged side by side on the outside of the storage box and configured to determine a corresponding magnetic field application mode according to the state of the stored items, the magnetic field application mode including stopping generation of a magnetic field, activating a part of the plurality of sets of electromagnetic coils, and activating all of the plurality of sets of electromagnetic coils; An open / close detector; Refrigeration controller and Further equipped with The open / close detector is configured to detect an open / close state of the storage box, The storage detection device is further configured to detect an internal temperature change before and after the storage box is opened in an area corresponding to each set of the electromagnetic coils in the freezer storage space, the refrigeration controller starts refrigeration of the storage box when the internal temperature change width of the area corresponding to any one of the sets of the electromagnetic coils is greater than a first set threshold value; A refrigerator having a freezer storage device, the refrigerator activating the electromagnetic coil to release a magnetic field when the internal temperature change width of the corresponding area is greater than a first set threshold.

2. The electromagnetic coils of each set are:

2. The refrigerator equipped with the freezer storage device according to claim 1, further comprising a first coil provided at the top of the storage box and a second coil provided at the bottom of the storage box, the first coil and the second coil being connected in series or in parallel.

3. The refrigeration storage device includes:

3. The refrigerator with freezing storage device according to claim 2, further comprising a magnetic frame made of a magnetic material, the magnetic frame being fitted to the outside of the storage box, and a magnetic field passes through the magnetic frame to complete a closed loop of magnetic field lines.

4. A plurality of first bosses are formed on the inside of the top wall of the magnetic frame at intervals along the lateral direction of the storage box, and each of the first bosses is used to position a first coil of one set of the electromagnetic coils; 4. The refrigerator with a freezer storage device according to claim 3, wherein a second boss facing the first boss is formed on the inside of the bottom wall of the magnetic frame, and each of the second bosses is used to position a second coil of one set of the electromagnetic coils.

5. The storage box is an outer cylinder provided in a space surrounded by the magnetic frame and having a front opening; A refrigerator equipped with the freezer storage device according to claim 3, further comprising: a drawer provided within said outer cylinder so as to be capable of being pulled out.

6. An air inlet and a return air port are provided on the rear wall of the outer cylinder; The air inlet is connected to an air duct of the refrigerator or communicates with an evaporator of the refrigerator, and is used to introduce a cooling air flow into the storage box; 6. The refrigerator equipped with the freezer storage member according to claim 5, wherein the return air port is connected to a return air duct of the refrigerator or communicates with an evaporator of the refrigerator and is used to return the airflow after heat exchange to the return air duct or the evaporator of the refrigerator.

7. 2. The refrigerator equipped with a freezer storage device according to claim 1, wherein the electromagnetic coil is provided in two sets, and in a magnetic field mode in which the two sets of the electromagnetic coils are simultaneously operated, the magnetic pole directions of the two sets of the electromagnetic coils are opposite to each other.

8. 2. The refrigerator with the freezer storage device according to claim 1, wherein after the electromagnetic coil is activated, when the internal temperature of the corresponding area is cooled to a second set threshold, the magnetic field generation is stopped.

9. 9. The refrigerator equipped with a freezer storage device according to claim 8, wherein when the internal temperatures of the areas corresponding to the plurality of sets of electromagnetic coils are all cooled to a third set threshold, the refrigeration controller stops freezing of the storage box, performs normal freezing control of the storage box in accordance with a freezing start condition and a freezing stop condition preset in the storage box, and maintains a freezing storage environment of the storage box, and the third set threshold is lower than the second set threshold.

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