Magnetic field freshness preserving device and refrigerator

Abstract

The application provides a magnetic field preservation device and a refrigerator. The magnetic field preservation device comprises: a shell, which is sequentially provided with a first chamber, a storage chamber and a second chamber; a magnetic field generating assembly, which comprises an electromagnetic coil, a first magnetic conductor and a second magnetic conductor. The electromagnetic coil cooperates with the first magnetic conductor to generate a first magnetic field in the first chamber after being electrified. The electromagnetic coil cooperates with the second magnetic conductor to generate a second magnetic field in the second chamber after being electrified; and an air duct, which is communicated with the first chamber. The air duct is used for guiding cold air into the first chamber to maintain the temperature in the first chamber in a first temperature range. The temperature in the second chamber is in a second temperature range, and the second temperature range is different from the first temperature range. The magnetic field generated by the magnetic field generating assembly is fully utilized, the range related to the magnetic field preservation is increased, and the effect of the magnetic field preservation is improved. On the basis of the magnetic field preservation, low-temperature storage is additionally provided, and the types of the preserved food materials are enriched.

Description

Technical Field

[0001] This application belongs to the field of refrigerator technology, and particularly relates to a magnetic field preservation device and a refrigerator. Background Technology

[0002] How to store food safely and nutritiously in a refrigerator is a key performance indicator. In order to keep food fresh in a refrigerator, various control technologies such as temperature, humidity, and gas have emerged, and electric field and magnetic field preservation technologies have also begun to enter the market.

[0003] Among them, the use of magnetic field preservation technology to improve preservation effects and delay nutrient loss involves activating water molecules in food under the influence of a magnetic field, reducing the activity of various metabolic enzymes in food and bacteria, and inhibiting or slowing down spoilage to achieve the effect of food preservation. However, in practical applications of refrigerators, the scope of magnetic field preservation is limited, and the types of food that can be preserved by magnetic field are restricted, resulting in unsatisfactory preservation effects. Summary of the Invention

[0004] This application provides a magnetic field preservation device and a refrigerator, which can improve the problem of poor magnetic field preservation effect.

[0005] This application provides a magnetic field preservation device for use in a refrigerator, the magnetic field preservation device comprising:

[0006] The shell is provided with a first chamber, a receiving chamber, and a second chamber in sequence;

[0007] A magnetizing assembly includes an electromagnetic coil, a first magnetic conductor, and a second magnetic conductor. The electromagnetic coil is disposed within the receiving cavity. The first magnetic conductor is disposed on the side of the electromagnetic coil facing the first cavity. When the electromagnetic coil is energized, it cooperates with the first magnetic conductor to generate a first magnetic field within the first cavity. The second magnetic conductor is disposed on the side of the electromagnetic coil facing the second cavity. When the electromagnetic coil is energized, it cooperates with the second magnetic conductor to generate a second magnetic field within the second cavity.

[0008] A duct is connected to the first room and is used to introduce cold air into the first room to maintain the temperature in the first room within a first temperature range.

[0009] The temperature in the second room is within a second temperature range, which is different from the first temperature range.

[0010] Optionally, the lowest temperature in the second temperature range is greater than the lowest temperature in the first temperature range.

[0011] Optionally, the housing includes a top wall, a first connecting frame, a second connecting frame, and a bottom wall arranged sequentially at intervals. The top wall and the first connecting frame define a first chamber, the second connecting frame and the bottom wall define a second chamber, and the first connecting frame and the second connecting frame define the receiving cavity. The first magnetic conductor is disposed on the side of the top wall opposite to the bottom wall, and the second magnetic conductor is disposed on the side of the bottom wall opposite to the top wall.

[0012] Optionally, the housing includes a rear sidewall, which connects the top wall, the first connecting frame, the second connecting frame, and the bottom wall. The rear sidewall has a first opening corresponding to the first compartment, and the air duct communicates with the first compartment through the first opening.

[0013] Optionally, the first opening is located at one end of the rear sidewall near the top wall;

[0014] The magnetic field preservation device also includes an air guide plate, which is disposed between the top wall and the first connecting frame. The air guide plate divides the first compartment into an air guiding space and a preservation space. The air guiding space is connected to the air duct through the first opening.

[0015] Optionally, the air guide plate is provided with air guide holes; and / or

[0016] The volume of the air guiding space is smaller than the volume of the preservation space.

[0017] Optionally, the rear sidewall has a second opening corresponding to the receiving chamber, and the air duct communicates with the receiving chamber through the second opening to introduce cold air into the receiving chamber.

[0018] Optionally, the centers of the first magnetic conductor, the second magnetic conductor, and the electromagnetic coil are on the same straight line; and / or

[0019] The distance between the first magnetic conductor and the electromagnetic coil is equal to the distance between the second magnetic conductor and the electromagnetic coil.

[0020] Optionally, the first magnetic field and the second magnetic field have the same magnetic field direction.

[0021] This application embodiment also provides a refrigerator, including:

[0022] The container has storage space;

[0023] The magnetic field preservation device as described in any of the preceding claims is disposed within the containing space.

[0024] In the magnetic field preservation device and refrigerator provided in this application embodiment, electromagnetic coils are used in conjunction with the first and second magnetic conductors respectively, which can simultaneously perform magnetic field preservation on the first and second compartments. This fully utilizes the magnetic field generated by the magnetic generating component, increases the scope of magnetic field preservation, and thus improves the effect of magnetic field preservation. In addition, the temperature ranges set for the first and second compartments are different, which allows the first and second compartments to be used to store food that is adapted to different temperatures. This adds low-temperature storage on the basis of magnetic field preservation, thereby enriching the types of food that can be preserved. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0027] Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the magnetic field preservation device provided in an embodiment of this application from one angle.

[0029] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the magnetic field preservation device along line AA.

[0030] Figure 4 This is a schematic diagram of the structure of the housing provided in an embodiment of this application.

[0031] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the shell.

[0032] Figure 6 This is a schematic diagram of the structure of the magnetizing component provided in an embodiment of this application.

[0033] Figure 7 for Figure 2 The diagram shows the magnetic field strength effect in the magnetic field preservation device without the first magnetic conductor.

[0034] Figure 8 for Figure 2 The diagram shows the magnetic field strength effect of the magnetic field preservation device.

[0035] Figure 9for Figure 2 The magnetic field strength distribution diagram of the magnetic field preservation device is shown.

[0036] Figure 10 This is a structural schematic diagram of the magnetic field preservation device provided in an embodiment of this application from another angle.

[0037] Figure 11 This is a schematic diagram of the structure of the air guide plate provided in an embodiment of this application. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application. The refrigerator 1 provided in this application includes a cabinet 10 and a door 20. The cabinet 10 has a receiving space 11, and the door 20 is rotatably connected to the cabinet 10 to cover or expose the receiving space 11. A partition is also provided inside the cabinet 10. The partition and the door 20 together divide the receiving space 11 into different compartments, and different amounts of cold air are supplied to the different compartments, thus forming a refrigerator compartment and a freezer compartment. The function of the refrigerator compartment is to preserve freshness. The temperature range of the refrigerator compartment can be between 0°C and 10°C. The refrigerator compartment is suitable for storing food or items that are to be consumed or used in a short period of time, such as vegetables, fruits, cooked food, and face masks. The function of the freezer compartment is to quickly freeze. The temperature range of the refrigerator compartment can be between -4°C and -24°C. The freezer compartment is suitable for storing food that is to be consumed in a long period of time, such as frozen foods, cold drinks, and meats that are to be used in a long period of time.

[0040] With technological advancements and improved living standards, consumers are no longer satisfied with simply keeping food fresh in cold storage rooms, as the shelf life is relatively short. They demand preservation methods that can maintain freshness for longer periods. Consequently, electric field and magnetic field preservation technologies have gradually entered the market. Magnetic field preservation technology, in particular, improves preservation effects and slows nutrient loss by activating water molecules in food under the influence of a magnetic field, reducing the activity of various metabolic enzymes within the food and bacteria, and inhibiting or slowing down spoilage. However, in practical applications, magnetic field preservation has a limited scope, restricting the types of food it can be used for, resulting in less than ideal preservation effects.

[0041] To reduce the occurrence of the above-mentioned situations, this application provides a magnetic field preservation device 30, which can be applied to a refrigerator 1. For example, the magnetic field preservation device 30 can be installed in the accommodating space 11. The control panel of the refrigerator 1 can integrate a control unit for controlling the magnetic field preservation device 30. The magnetic field preservation device 30 has a magnetic field preservation space, which can be understood as a third compartment parallel to the refrigerator compartment and the freezer compartment. In some embodiments, the magnetic field preservation device 30 can also be an independent device, configured with an independent control system, and can become a separate device for preserving food. This application uses the application of the magnetic field preservation device 30 in a refrigerator 1 as an example for illustration.

[0042] For example, please refer to Figure 1 And see Figure 2 and Figure 3 As shown, Figure 2 This is a schematic diagram of the magnetic field preservation device provided in the embodiments of this application from one angle. Figure 3 for Figure 2 The diagram shows a cross-sectional view of the magnetic field preservation device along line AA. The magnetic field preservation device 30 includes a housing 31, a magnetic generation component 32, and an air duct 33.

[0043] The housing 31 forms the frame of the magnetic field preservation device 30. The housing 31 is sequentially arranged with a first compartment 310, a receiving chamber 311, and a second compartment 312. For example, in the direction of gravity, the first compartment 310, the receiving chamber 311, and the second compartment 312 are arranged from top to bottom, meaning they are stacked vertically, with the receiving chamber 311 positioned between them. Alternatively, in the horizontal direction perpendicular to gravity, the first compartment 310, the receiving chamber 311, and the second compartment 312 are arranged from left to right or from right to left, meaning they are arranged horizontally, with the receiving chamber 311 positioned between them. In the case of a refrigerator 1 with vertically arranged refrigerator and freezer compartments, the housing 31 can be positioned in the area between the refrigerator and freezer compartments.

[0044] The magnetic field generating component 32 is the magnetic field source for the magnetic field preservation device 30. Exemplarily, the magnetic field generating component 32 includes an electromagnetic coil 320, a first magnetic conductor 321, and a second magnetic conductor 322. The electromagnetic coil 320 is disposed within the receiving chamber 311, and the first magnetic conductor 321 is disposed on the side of the electromagnetic coil 320 facing the first chamber 310. When the electromagnetic coil 320 is energized, it cooperates with the first magnetic conductor to generate a first magnetic field within the first chamber 310. The second magnetic conductor 322 is disposed on the side of the electromagnetic coil 320 facing the second chamber 312. When the electromagnetic coil 320 is energized, it cooperates with the second magnetic conductor 322 to generate a second magnetic field within the second chamber 312. It can be understood that the first and second magnetic fields can respectively reduce the activity of various metabolic enzymes in the food and bacteria within the first and second chambers 310, inhibiting or slowing down spoilage and achieving the effect of food preservation.

[0045] The air duct 33 is connected to the first chamber 310 and is used to introduce cold air into the first chamber 310 to maintain the temperature in the first chamber 310 within a first temperature range. The temperature in the second chamber 312 is within a second temperature range, which is different from the first temperature range.

[0046] In the magnetic field preservation device 30 provided in this application embodiment, an electromagnetic coil 320 is used in conjunction with a first magnetic conductor 321 and a second magnetic conductor 322, which can simultaneously perform magnetic field preservation on the first compartment 310 and the second compartment 312. This fully utilizes the magnetic field generated by the magnetic generating component 32, increases the scope of magnetic field preservation, and thus improves the effect of magnetic field preservation. In addition, the temperature ranges set for the first compartment 310 and the second compartment 312 are different, which allows the first compartment 310 and the second compartment 312 to be used to store ingredients that are adapted to different temperatures. This adds low-temperature storage on the basis of magnetic field preservation, thereby enriching the types of ingredients that can be preserved.

[0047] Please combine Figures 1 to 3 And see Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the shell structure provided in an embodiment of this application. Figure 5 for Figure 4The diagram shows a cross-sectional view of the housing. The housing 31 can be formed by joining two box-shaped structures to create a first chamber 310, a receiving chamber 311, and a second chamber 312. Alternatively, the housing 31 can be a frame structure with partitions separating the first chamber 310, the receiving chamber 311, and the second chamber 312. For example, the housing 31 includes a top wall 313, a first connecting frame 314, a second connecting frame 315, and a bottom wall 316 arranged sequentially at intervals. The first chamber 310 is defined between the top wall 313 and the first connecting frame 314, the second chamber 312 is defined between the second connecting frame 315 and the bottom wall 316, and the receiving chamber 311 is defined between the first connecting frame 314 and the second connecting frame 315. The housing 31 also includes a rear sidewall 317, which connects to the top wall 313, the first connecting frame 314, the second connecting frame 315, and the bottom wall 316. The housing 31 may also include a left sidewall and a right sidewall disposed opposite to each other, which are connected to the rear sidewall 317 and respectively, and are also connected to the top wall 313, the first connecting frame 314, the second connecting frame 315, and the bottom wall 316. It is understood that the top wall 313, the bottom wall 316, the rear sidewall 317, the left sidewall, and the right sidewall together enclose a space, and the first connecting frame 314 and the second connecting frame 315 are disposed in the space as partitions to form a first chamber 310, a receiving chamber 311, and a second chamber 312.

[0048] The first connecting frame 314 and the second connecting frame 315 are arranged in parallel. However, this parallel arrangement is not absolute; a margin of error of up to 5% is permissible in practical applications. The orientation of the first connecting frame 314 and the second connecting frame 315 determines whether the first compartment 310 and the second compartment 312 are arranged vertically or horizontally. For example, if the first connecting frame 314 and the second connecting frame 315 are spaced apart along the direction of gravity and are both parallel to the horizontal direction, then the first compartment 310 and the second compartment 312 are arranged vertically. Alternatively, if the first connecting frame 314 and the second connecting frame 315 are spaced apart along the horizontal direction and are both parallel to the direction of gravity, then the first compartment 310 and the second compartment 312 are arranged horizontally. The horizontal or vertical arrangement of the first compartment 310 and the second compartment 312 can be configured as needed and is not limited here.

[0049] To facilitate user access to ingredients, drawers can be installed in both the first compartment 310 and the second compartment 312. When the drawer is located in the first compartment 310, it can store ingredients and also seal the first compartment 310. Similarly, when the drawer is located in the second compartment 312, it can store ingredients and also seal the second compartment 312. Alternatively, doors can be installed to seal both the first compartment 310 and the second compartment 312, or one compartment can be sealed with a door while the other uses a drawer for food storage and sealing.

[0050] It is understandable that when a user is facing the magnetic field preservation device 30, the front, back, left, right, up, and down are relative to the user. The rear side wall 317 is the side away from the user, the left and right side walls are the user's left and right sides, and the top wall 313 and bottom wall 316 are the walls above and below in the direction of gravity. The above description of the structural composition of the shell 31 is for ease of description and should not be construed as a limitation on the structural composition of the shell 31.

[0051] For example, the electromagnetic coil 320 is disposed within the receiving chamber 311, and the electromagnetic coil 320 can be mounted within the receiving chamber 311 via a bracket. For example, the electromagnetic coil 320 can be annular, with an inner diameter of not less than 100 mm, to prevent the inner diameter of the electromagnetic coil 320 from affecting spatial uniformity and heat dissipation capacity. For example, in some embodiments, the electromagnetic coil 320 can be configured as an annular shape with an inner diameter of 110 mm and an outer diameter of 280 mm. Gaps can be provided between the electromagnetic coil 320 and the first connecting bracket 314 and the second connecting bracket 315, respectively, to facilitate heat dissipation of the electromagnetic coil 320.

[0052] For example, the first magnetic conductor 321 is disposed on the side of the top wall 313 away from the bottom wall 316, and the second magnetic conductor 322 is disposed on the side of the bottom wall 316 away from the top wall 313. The first magnetic conductor 321 and the second magnetic conductor 322 are disposed opposite to each other on both sides of the electromagnetic coil 320. The first magnetic conductor 321 and the electromagnetic coil 320 cooperate to generate a first magnetic field in the first compartment 310, thereby acting on the food in the first compartment 310. The second magnetic conductor 322 and the electromagnetic coil 320 cooperate to generate a second magnetic field in the second compartment 312, thereby acting on the food in the second compartment 312.

[0053] The first magnetic conductor 321 and the second magnetic conductor 322 can both be made of high-permeability permanent magnet materials, such as iron plates, carbon steel, rare-earth permanent magnet materials, etc. The first magnetic conductor 321 and the second magnetic conductor 322 can be injection molded into a plastic shelf, or the first magnetic conductor 321 can be embedded in the top wall 313 and the second magnetic conductor 322 can be embedded in the bottom wall 316. Metal helps to enhance heat conduction and improve cooling performance. The first magnetic conductor 321 can be a square structure, and it can be an iron plate of a predetermined thickness, for example, a 2mm thick iron plate. The shape and size of the second magnetic conductor 322 can be set with reference to the first magnetic conductor 321, and will not be elaborated further here.

[0054] Please combine Figures 1 to 5 And see Figure 6 , Figure 6 This is a schematic diagram of the magnetic generation component provided in an embodiment of this application. Exemplarily, the centers of the first magnetic conductor 321, the second magnetic conductor 322, and the electromagnetic coil 320 are on the same straight line. However, this alignment may have a certain margin of error, such as 5%, meaning it is not strictly or absolutely aligned. Highly permeable permanent magnets are placed on both sides of the electromagnetic coil 320 to attract magnetic lines of force, drawing the first and second magnetic fields into the first chamber 310 and the second chamber 312 on both sides of the electromagnetic coil 320, respectively, forming a dual magnetic field region. The magnetic field directions of the first and second magnetic fields are the same.

[0055] In this design, the distance between the first magnetic conductor 321 and the electromagnetic coil 320, and the distance between the second magnetic conductor 322 and the electromagnetic coil 320, are equal. However, the distances between the first magnetic conductor 321 and the electromagnetic coil 320 can be considered equal if the error is within a set range such as 5%. For example, the distance between the first magnetic conductor 321 and the electromagnetic coil 320 should be less than or equal to 150mm. A distance that is too large can easily lead to poor magnetic field traction, which is detrimental to achieving uniformity of the spatial magnetic field.

[0056] The maximum magnetic field strengths of the first and second magnetic fields can be equal. For example, please refer to... Figures 1 to 6 And see Figures 7 to 9 As shown, Figure 7 for Figure 2 The diagram shown illustrates the magnetic field strength effect in the magnetic field preservation device without the first magnetic conductor. Figure 8 for Figure 2 The diagram shows the magnetic field strength effect of the magnetic field preservation device. Figure 9 for Figure 2The magnetic field strength distribution diagram of the magnetic field preservation device is shown. The magnetic field strength distribution of the magnetizing component 32 in this embodiment is as follows: Figure 8 and Figure 9 ,and Figure 7 Compared to the previous method where a magnetic conductor was only provided on one side of the electromagnetic coil, the magnetic generation component 32 of this application embodiment can make full use of the magnetic field to preserve the first chamber 310 and the second chamber 312, reducing the waste of the magnetic field.

[0057] It should be noted that the temperature ranges of the first chamber 310 and the second chamber 312 are not the same, thus allowing the first chamber 310 and the second chamber 312 to be suitable for storing different types of food, enriching the variety of food that the magnetic field preservation device 30 can store. Because cold air is circulated through the first chamber 310, the lowest temperature within the first temperature range of the first chamber 310 is lower than the lowest temperature within the second temperature range of the second chamber 312. For example, the first temperature range within the first chamber 310 can be -3℃ to 5℃, while the second temperature range within the second chamber 312 can be 2℃ to 4℃. Understandably, the first compartment 310 has both magnetic field preservation and low-temperature storage functions. For example, the first compartment 310 can be defined as a magnetic field temperature-controlled zone for storing items like meat, keeping it in a slightly frozen state with ice crystals for user convenience. In this case, the control of the magnetic field preservation device 30 can be connected to the user's mobile terminal, allowing the user to control the temperature inside the first compartment 310. For instance, before consuming the meat, the temperature of the first compartment 310 can be raised to, say, 5°C to thaw the slightly frozen meat with ice crystals for easy consumption. Understandably, even without pre-heating the first compartment 310, the thawing time for meat stored in the first compartment 310 is shorter compared to meat stored in the frozen compartment. Of course, the first compartment 310 can also store the same types of food as the second compartment 312. For example, the second compartment 312 has a magnetic field preservation function and can preserve fruits and vegetables. The first compartment 310 can choose to store the same types of food as the second compartment 312, such as fruits and vegetables, or it can choose to store different types of food, such as meat. This makes the types of food that can be stored in the first compartment 310 more diverse and helps to expand the application scenarios of the magnetic field preservation device 30. In addition, using the same magnetic generating component 32 can simultaneously perform magnetic field preservation on the first compartment 310 and the second compartment 312, making full use of the magnetic generating component 32, expanding the scope of the magnetic field, improving the utilization rate of the magnetic field, and reducing the waste of the magnetic field.

[0058] It is understandable that a temperature sensor can be installed in the first compartment 310 to monitor the temperature in the first compartment 310 in real time, thereby facilitating the regulation of the temperature in the first compartment 310. For example, the temperature sensor can be electrically connected to the control board of the magnetic field preservation device 30 to transmit the temperature in the first compartment 310 to the control board. After the control board makes a judgment, it sends a control signal to control the temperature of the first compartment 310.

[0059] Temperature control in the first room 310 is achieved by supplying cool air. For example, please refer to... Figures 1 to 9 And see Figure 10 , Figure 10 This is a schematic diagram of the magnetic field preservation device provided in an embodiment of this application from another angle. A first opening 3170 is provided on the rear sidewall 317 corresponding to the first compartment 310, and an air duct 33 communicates with the first compartment 310 through the first opening 3170. The end of the air duct 33 opposite to the first opening 3170 is connected to a fan and a compressor, thereby providing cold air to the first compartment 310. The air duct 33 can also be a branch from the air ducts of the refrigeration compartment and the freezer compartment. A damper can be installed near the first opening 3170 on the air duct 33. By controlling the opening and closing of the damper and its opening degree, the amount of cold air entering the first compartment 310 can be adjusted, thereby regulating the temperature inside the first compartment 310.

[0060] The first opening 3170 is located at the end of the rear side wall 317 near the top wall 313. The magnetic field preservation device 30 may also include an air guide plate 34, which is disposed between the top wall 313 and the first connecting frame 314. The air guide plate 34 divides the first chamber 310 into an air guide space 3100 and a preservation space 3102. The air guide space 3100 is connected to the air duct 33 through the first opening 3170. For example, the volume of the air guide space 3100 is smaller than the volume of the preservation space 3102, thus providing more space for storing food. The air guide plate 34 allows cold air to be evenly distributed in the air guide space 3100, and the air guide space 3100 radiates cooling energy to the preservation space 3102 through the air guide plate 34. Please refer to... Figures 1 to 10 And see Figure 11 As shown, Figure 11 This is a schematic diagram of the structure of the air guide plate provided in the embodiment of this application. Of course, the air guide plate 34 can also be provided with air guide holes 340, which are evenly distributed on the air guide plate 34 and connect the air guide space 3100 and the preservation space 3102.

[0061] It should be noted that the first magnetic conductor 321 can also be disposed within the air guide space 3100, for example, by attaching the first magnetic conductor 321 to the top wall 313. Disposing the first magnetic conductor 321 within the air guide space 3100 can improve the storage capacity of the device and enhance the neatness and aesthetics of the magnetic field preservation device 30.

[0062] For example, the rear sidewall 317 has a second opening 3172 corresponding to the receiving chamber 311. The air duct 33 communicates with the receiving chamber 311 through the second opening 3172 to introduce cold air into the receiving chamber 311. It can be understood that since the electromagnetic coil 320 is located inside the receiving chamber 311, circulating cold air into the receiving chamber 311 can be used to dissipate heat from the electromagnetic coil 320. Cooling of the second chamber 312 is achieved through the radiation of cold energy within the receiving chamber 311. The absence of air intake in the second chamber 312 ensures the uniformity of its temperature. To prevent heat from rising and cold energy from continuously concentrating downwards, causing the temperature of the second chamber 312 to become too low, holes can be evenly opened on the lower surface of the electromagnetic coil 320 to allow heat to be conducted downwards.

[0063] A temperature sensor can also be installed inside the containment chamber 311 to monitor the temperature in real time, allowing for temperature regulation. For example, a damper can be installed near the second opening 3172 on the air duct 33. Controlling the opening and closing of the damper and its degree of opening can regulate the amount of cold air entering the containment chamber 311, thereby adjusting the temperature inside. A miniature centrifugal fan can also be installed at the second opening 3172 to accelerate the delivery of cold air from the air duct 33 into the containment chamber 311, achieving rapid and uniform heat dissipation. To avoid excessive temperature differences within the containment chamber 311, the required cooling airflow is reduced, allowing more air to enter the first chamber 310 for rapid cooling. Simultaneously, the heat from the lower part of the containment chamber 311 is carried away by the cold air before it rises.

[0064] The return air vent of the containment chamber 311 can be aligned with the return air vent of the refrigerator compartment in terms of position and direction. This helps the air blown out of the containment chamber 311 to directly enter the freezer compartment through the refrigerator return air vent, thus avoiding affecting the temperature changes of the refrigerator compartment.

[0065] For example, the air duct 33 can be hidden inside the rear panel 12 of the refrigerator 1. Ribs can be added inside the air duct 33 to split the cold air into two paths, which are then delivered to the first compartment 310 and the receiving chamber 311 respectively. The air volume distribution ratio between the first compartment 310 and the receiving chamber 311 can be 2:1 to 1:3, and different distribution ratios can be adjusted according to the temperature variation range of the first compartment 310. For example, the air volume can be distributed to the first compartment 310 and the receiving chamber 311 in a 1:1 ratio.

[0066] In the magnetic field preservation device 30 and refrigerator 1 provided in this application embodiment, an electromagnetic coil 320 is used in conjunction with a first magnetic conductor 321 and a second magnetic conductor 322, respectively, to simultaneously perform magnetic field preservation on the first compartment 310 and the second compartment 312. This fully utilizes the magnetic field generated by the magnetic generating component 32, increases the scope of magnetic field preservation, and thus improves the effect of magnetic field preservation. In addition, the temperature ranges set for the first compartment 310 and the second compartment 312 are different, which allows the first compartment 310 and the second compartment 312 to be used to store food that is adapted to different temperatures. On the basis of magnetic field preservation, low-temperature storage is added, thereby enriching the types of food that can be preserved.

[0067] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0068] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0069] The magnetic field preservation device and refrigerator provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A magnetic field preservation device, applied to a refrigerator, characterized in that, The magnetic field preservation device includes: The housing includes a top wall and a bottom wall, and is provided with a first chamber, a receiving chamber and a second chamber in sequence. The top wall is a component of the first chamber, and the bottom wall is a component of the second chamber. The top wall is located on the side of the first chamber away from the second chamber, and the bottom wall is located on the side of the second chamber away from the first chamber. A magnetizing assembly includes an electromagnetic coil, a first magnetic conductor, and a second magnetic conductor. The electromagnetic coil is disposed within the receiving cavity. The first magnetic conductor is disposed on the side of the electromagnetic coil facing the first cavity and is embedded in the top wall. When the electromagnetic coil is energized, it cooperates with the first magnetic conductor to generate a first magnetic field within the first cavity. The second magnetic conductor is disposed on the side of the electromagnetic coil facing the second cavity and is embedded in the bottom wall. When the electromagnetic coil is energized, it cooperates with the second magnetic conductor to generate a second magnetic field within the second cavity. A duct is connected to the first room and is used to introduce cold air into the first room to maintain the temperature in the first room within a first temperature range. The temperature in the second room is within a second temperature range, which is different from the first temperature range.

2. The magnetic field preservation device according to claim 1, characterized in that, The lowest temperature in the second temperature range is greater than the lowest temperature in the first temperature range.

3. The magnetic field preservation device according to claim 1, characterized in that, The housing includes a top wall, a first connecting frame, a second connecting frame, and a bottom wall arranged sequentially at intervals. A first chamber is defined between the top wall and the first connecting frame, a second chamber is defined between the second connecting frame and the bottom wall, and a receiving cavity is defined between the first connecting frame and the second connecting frame. A first magnetic conductor is disposed on the side of the top wall opposite to the bottom wall, and a second magnetic conductor is disposed on the side of the bottom wall opposite to the top wall.

4. The magnetic field preservation device according to claim 3, characterized in that, The housing includes a rear sidewall, which connects the top wall, the first connecting frame, the second connecting frame, and the bottom wall. The rear sidewall has a first opening corresponding to the first compartment, and the air duct communicates with the first compartment through the first opening.

5. The magnetic field preservation device according to claim 4, characterized in that, The first opening is located at one end of the rear sidewall near the top wall; The magnetic field preservation device also includes an air guide plate, which is disposed between the top wall and the first connecting frame. The air guide plate divides the first compartment into an air guiding space and a preservation space. The air guiding space is connected to the air duct through the first opening.

6. The magnetic field preservation device according to claim 5, characterized in that, The air guide plate is provided with air guide holes; and / or The volume of the air guiding space is smaller than the volume of the preservation space.

7. The magnetic field preservation device according to claim 4, characterized in that, The rear sidewall has a second opening corresponding to the receiving chamber, and the air duct is connected to the receiving chamber through the second opening to introduce cold air into the receiving chamber.

8. The magnetic field preservation device according to any one of claims 1-7, characterized in that, The centers of the first magnetic conductor, the second magnetic conductor, and the electromagnetic coil are on the same straight line; and / or The distance between the first magnetic conductor and the electromagnetic coil is equal to the distance between the second magnetic conductor and the electromagnetic coil.

9. The magnetic field preservation device according to claim 8, characterized in that, The first magnetic field and the second magnetic field have the same magnetic field direction.

10. A refrigerator, characterized in that, include: The container has storage space; The magnetic field preservation device according to any one of claims 1-9, wherein the magnetic field preservation device is disposed within the accommodating space.

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