Magnetic field device, magnetic field fresh-keeping container and refrigerator

Abstract

The utility model provides a magnetic field device, a magnetic field fresh-keeping container and a refrigerator. The magnetic field device comprises an annular magnetic conductive piece, the annular magnetic conductive piece is used for surrounding a food material containing area of the refrigerator from four directions, and magnetic field generating parts are arranged on the four inner side faces, facing the food material containing area from the four directions, of the annular magnetic conductive piece correspondingly and used for generating magnetic fields. And the inner side surface of the annular magnetic conducting part completely covers the magnetic field generating part in the direction pointing to the food material placing area. The magnetic field generating parts generate magnetic fields in the four directions of the food material containing area, the annular magnetic conduction part covers the magnetic field generating parts, the magnetic fields generated by the magnetic field generating parts are shielded and guided, the magnetic fields generated by the magnetic field generating parts are gathered in the space covered by the annular magnetic conduction part, and the magnetic field utilization rate is increased. And the magnetic field is more uniformly distributed in the area surrounded by the annular magnetic conductive piece.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration and fresh-keeping, in particular to a magnetic field device, a magnetic field fresh-keeping container and a refrigerator. Background Art

[0002] Refrigerators are common household appliances that can store items at low temperatures. As people's living standards improve, higher requirements are placed on the preservation effect of refrigerators. Theoretical studies have found that magnetic fields have a great influence on the low-temperature storage of food, because magnetic fields limit the free path of water molecules to a certain extent, so that the growth of crystal nuclei is inhibited, so that food is less likely to freeze at low temperatures, so that refrigeration can be achieved at a certain sub-zero temperature, or the ice crystals produced when food is frozen can be reduced to reduce damage to food cells.

[0003] Therefore, applying a magnetic field to food can help to store food at low temperatures and improve the preservation of food. Refrigerators are also actively exploring the introduction of magnetic fields into fresh-keeping storage to improve the preservation effect of refrigerators. However, the uniformity of the magnetic field in refrigerators needs to be improved. Utility Model Content

[0004] One purpose of the utility model is to provide a magnetic field device, a magnetic field preservation container and a refrigerator which can improve the uniformity of the magnetic field.

[0005] A further object of the present invention is to further improve the uniformity of the magnetic field distribution in the area surrounded by the annular magnetic conductive member.

[0006] In particular, the utility model provides a magnetic field device for a refrigerator, comprising: an annular magnetic conductive part, which is used to surround the food placement area of ​​the refrigerator from four directions, and the four inner sides of the annular magnetic conductive part facing the food placement area from four directions are provided with magnetic field generating components, the magnetic field generating components are used to generate a magnetic field, and the inner side surface of the annular magnetic conductive part completely covers the magnetic field generating components along the direction pointing to the food placement area.

[0007] Optionally, at least one magnetic field generating element is provided on each of the four inner side surfaces of the annular magnetic conductive element facing the food placement area from four directions, and the magnetic field generating element constitutes the magnetic field generating component between each of the inner side surfaces and the food placement area.

[0008] Optionally, the annular magnetic conductive component is provided with an equal number of multiple magnetic field generating components on two opposite inner sides of the four inner sides facing the food placement area from four directions, and the multiple magnetic field generating components are arranged at intervals along the annular extension direction of the annular magnetic conductive component.

[0009] Optionally, the magnetic field device includes an integrally formed annular source magnetic component, the shape of which matches the inner ring shape of the annular magnetic conductive component, and the annular source magnetic component is arranged on the inner side of the annular magnetic conductive component, so that the annular source magnetic component and the parts corresponding to the four inner sides of the annular magnetic conductive component facing the food placement area constitute the magnetic field generating component.

[0010] Optionally, the magnetic field generating component is a permanent magnet sheet, or the magnetic field generating component is an electromagnetic coil, or the magnetic field generating component is a structure consisting of a permanent magnet sheet and an electromagnetic coil.

[0011] In another aspect of the utility model, a magnetic field preservation container for a refrigerator is provided, comprising:

[0012] A storage device, wherein the storage device is formed with a food placement area; and

[0013] At least one magnetic field device according to any one of the above items, wherein the annular magnetic conductive part of the magnetic field device surrounds the side wall of the storage device and surrounds the food placement area from four directions, and the magnetic field generating component is arranged between the annular magnetic conductive part and the side wall of the storage device.

[0014] Optionally, two opposite sides of the magnetic field generating component are respectively in contact with the annular magnetic conductive member and the side wall of the storage device, so that the magnetic field device can be supported by the side wall of the storage device.

[0015] Optionally, the magnetic field preservation container includes a plurality of the magnetic field devices, and the plurality of the magnetic field devices are arranged and distributed along one direction.

[0016] In another aspect of the utility model, a refrigerator is provided, wherein the refrigerator is formed with a food placement area, and the refrigerator includes at least one magnetic field device according to any one of the above items, wherein the annular magnetic conductive member of the magnetic field device surrounds the food placement area from four directions.

[0017] Optionally, the refrigerator comprises a plurality of the magnetic field devices, and the plurality of the magnetic field devices are arranged and distributed along one direction.

[0018] The magnetic field device, magnetic field preservation container and refrigerator of the utility model are arranged such that an annular magnetic conductive part surrounds the food placement area, and magnetic field generating components are arranged on the four inner sides of the annular magnetic conductive part facing the food placement area from four directions, and the magnetic field generating components can generate a magnetic field. Therefore, magnetic field generating components generate magnetic fields in the four directions of the food placement area, and the annular magnetic conductive part covers the magnetic field generating components, which shields and guides the magnetic field generated by the magnetic field generating components, so that the magnetic field generated by the magnetic field generating components is concentrated in the space covered by the annular magnetic conductive part, thereby reducing magnetic field leakage and improving magnetic field utilization. Moreover, the magnetic field is more evenly distributed in the area surrounded by the annular magnetic conductive part, thereby improving the uniformity of the magnetic field in the corresponding area of ​​the food placement area. In addition, the annular magnetic conductive part has a simple structure and is easy to process, which also makes the installation of the magnetic field device more convenient.

[0019] Furthermore, the magnetic field device, magnetic field preservation container and refrigerator of the utility model are provided with a plurality of magnetic field generating parts of the same number on two opposite inner sides of the four inner sides of the annular magnetic conductive part facing the food placement area from four directions, and the plurality of magnetic field generating parts are arranged at intervals along the annular extension direction of the annular magnetic conductive part. The plurality of magnetic field generating parts jointly generate a magnetic field, which helps to further reduce the rate of change of the magnetic field intensity in the distribution direction of the plurality of magnetic field generating parts, thereby further improving the uniformity of the magnetic field distribution in the area surrounded by the annular magnetic conductive part. In addition, a plurality of magnetic field generating parts are provided correspondingly on the inner side of the annular magnetic conductive part, which can reduce the overall size of the magnetic field generating part on the basis of ensuring the uniformity of the magnetic field, thereby reducing the cost.

[0020] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0022] Figure 1 is a schematic diagram of a magnetic field preservation container according to an embodiment of the utility model;

[0023] Figure 2 is a first schematic cross-sectional view of a magnetic field preservation container according to an embodiment of the utility model;

[0024] Figure 3 is a second schematic cross-sectional view of a magnetic field preservation container according to an embodiment of the utility model;

[0025] Figure 4is a schematic cross-sectional view of a magnetic field preservation container according to another embodiment of the utility model;

[0026] Figure 5 is a schematic cross-sectional view of a magnetic field preservation container according to another embodiment of the utility model;

[0027] Figure 6 is a first schematic diagram of a refrigerator according to an embodiment of the utility model;

[0028] Figure 7 It is a second schematic diagram of a refrigerator according to an embodiment of the utility model. DETAILED DESCRIPTION

[0029] It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention, and the 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.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] Furthermore, 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 direct connection, an indirect connection through an intermediate medium, or 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.

[0032] like Figures 1 to 3As shown, in one embodiment, the magnetic field preservation container includes a storage device 100 and a magnetic field device 200. The storage device 100 is formed with a food placement area 101. The magnetic field device 200 includes an annular magnetic conductive member 210, the annular magnetic conductive member 210 is used to surround the food placement area 101 from four directions, and the four inner sides of the annular magnetic conductive member 210 facing the food placement area 101 from four directions are provided with magnetic field generating components, the magnetic field generating components are used to generate a magnetic field, and the inner side of the annular magnetic conductive member 210 completely covers the magnetic field generating components along the direction pointing to the food placement area 101. In other words, the annular magnetic conductive member 210 surrounds the side wall of the storage device 100 and surrounds the food placement area 101 from four directions, and the magnetic field generating components are arranged between the annular magnetic conductive member 210 and the side wall of the storage device 100.

[0033] Reference Figures 1 to 3 As shown, specifically, the storage device 100 is a square box-shaped component with an opening at the front end, and a food placement area 101 is formed inside, and the food placement area 101 is used to place food. The front end opening of the storage device 100 is also the opening of the food placement area 101. The annular magnetic conductive member 210 is a belt-shaped component that is square and annular as a whole. The annular magnetic conductive member 210 surrounds the outside of the side wall of the storage device 100, that is, the annular magnetic conductive member 210 surrounds the storage device 100 from the top, bottom, left and right directions of the storage device 100, that is, it surrounds the outside of the left side wall, right side wall, top side wall and bottom side wall of the storage device 100. In other words, the annular magnetic conductive member 210 surrounds the food placement area 101 inside the storage device 100 from the top, bottom, left and right directions.

[0034] like Figures 1 to 3 As shown, further, a magnetic field generating member 220 is provided on each of the four inner side surfaces of the annular magnetic conductive member 210 facing the food placement area 101 from four directions, and the magnetic field generating member 220 constitutes a magnetic field generating component between each inner side surface and the food placement area 101 .

[0035] Continue to refer to Figures 1 to 3 As shown, specifically, the magnetic field generating member 220 is a permanent magnetic sheet, and the length of each magnetic field generating member 220 is substantially the same as the length of the inner side surface of the corresponding annular magnetic conductive member 210. That is to say, for each magnetic field generating member 220 and the inner side surface of the corresponding annular magnetic conductive member 210, the width of the magnetic field generating member 220 is less than or equal to the width of the inner side surface of the annular magnetic conductive member 210, and the length of the magnetic field generating member 220 is less than or equal to the length of the inner side surface of the annular magnetic conductive member 210, so that the inner side surface of the annular magnetic conductive member 210 completely covers the corresponding magnetic field generating member 220 in the direction pointing to the food placement area 101, that is, completely covers the corresponding magnetic field generating member.

[0036] Reference Figure 2 and Figure 3As shown, exemplarily, for the inner side surface of the annular magnetic conductive component 210 and the magnetic field generating component 220 at the top of the storage device 100, the length is the dimension along the left-right direction of the storage device 100, and the width is the dimension along the front-back direction of the storage device 100.

[0037] Specifically, when only one magnetic field generating element 220 is provided on the inner side of the annular magnetic conductive element 210 , the ratio of the length of the magnetic field generating element 220 to the length of the inner side of the corresponding annular magnetic conductive element 210 is greater than or equal to 0.9 and less than or equal to 1.

[0038] It should be noted that the magnetic field generating element may also be an electromagnetic coil, or a structure composed of a permanent magnet sheet and an electromagnetic coil, such as a structure formed by superimposing an electromagnetic coil and a permanent magnet sheet.

[0039] In the scheme of this embodiment, the annular magnetic conductive member 210 is made to surround the food placement area 101, and magnetic field generating components are arranged on the four inner sides of the annular magnetic conductive member 210 facing the food placement area 101 from four directions, so that the magnetic field generating component can generate a magnetic field. Therefore, there are magnetic field generating components in the four directions of the food placement area 101 to generate magnetic fields, and the annular magnetic conductive member 210 covers the magnetic field generating components, which plays a role in shielding and guiding the magnetic field generated by the magnetic field generating components, so that the magnetic field generated by the magnetic field generating components is concentrated in the space covered by the annular magnetic conductive member 210, reducing magnetic field leakage and improving magnetic field utilization. Moreover, the magnetic field is distributed more evenly in the area surrounded by the annular magnetic conductive member 210, thereby improving the uniformity of the magnetic field in the corresponding area in the food placement area 101. In addition, the annular magnetic conductive member 210 has a simple structure, is easy to process, and also makes the installation of the magnetic field device more convenient.

[0040] It should be noted that in some other embodiments, the storage device may also be a drawer, and the annular magnetic conductive member surrounds the drawer from the front, back, left, and right directions to form a food placement area. Alternatively, the annular magnetic conductive member may also surround the drawer from the top, bottom, left, and right directions to form a food placement area. In this solution, the drawer can be pulled relative to the magnetic field device.

[0041] Combination Figures 1 to 3As shown, further, the opposite sides of the magnetic field generating component are respectively fitted with the annular magnetic conductive member 210 and the side wall of the storage device 100 , so that the magnetic field device 200 can be supported by the side wall of the storage device 100 . Specifically, the magnetic field generating component 220 located on the top side of the storage device 100 is respectively fitted with the inner side surface of the annular magnetic conductive component 210 located on the top side of the food placement area 101 and the top side wall of the storage device 100; the magnetic field generating component 220 located on the bottom side of the storage device 100 is respectively fitted with the inner side surface of the annular magnetic conductive component 210 located on the bottom side of the food placement area 101 and the bottom side wall of the storage device 100; the magnetic field generating component 220 located on the left side of the storage device 100 is respectively fitted with the inner side surface of the annular magnetic conductive component 210 located on the left side of the food placement area 101 and the left side wall of the storage device 100; the magnetic field generating component 220 located on the right side of the storage device 100 is fitted with the inner side surface of the annular magnetic conductive component 210 located on the right side of the food placement area 101 and the right side wall of the storage device 100.

[0042] That is to say, the magnetic field generating member 220 can be clamped by the annular magnetic conductive member 210 and the storage device 100, and the magnetic field device 200 is supported by the storage device 100 as a whole. On the one hand, it can make the assembly between the magnetic field device 200 and the storage device 100 easier, and on the other hand, it can also improve the stability of the magnetic field device 200 and the storage device 100 after assembly.

[0043] It should be noted that the magnetic field generating component and the annular magnetic conductive component may also be additionally fixed, for example, by bonding, that is, the annular magnetic conductive component is bonded to the magnetic field generating component. Alternatively, they may be fixed by drilling holes with screws.

[0044] like Figure 1 and Figure 3 As shown, further, the magnetic field preservation container includes a plurality of magnetic field devices 200, and the plurality of magnetic field devices 200 are arranged and distributed along one direction. Specifically, the magnetic field preservation container has three magnetic field devices 200, and the three magnetic field devices 200 are arranged in sequence along the opening direction of the storage device 100, that is, the three magnetic field devices 200 are arranged in sequence along the front and rear direction of the storage device 100. In addition, the plurality of magnetic field devices 200 are symmetrically distributed along the center line of the storage device 100 that is perpendicular to the distribution direction of the plurality of magnetic field devices 200.

[0045] By providing a plurality of magnetic field devices 200 and distributing the plurality of magnetic field devices 200 in one direction, it is helpful to enable the magnetic field devices 200 to achieve better magnetic field coverage of the food placement area 101 .

[0046] It should be noted that in some other embodiments, the number of magnetic field devices may be two, four or more. In addition, when the food placement area is small, only one magnetic field device may be provided.

[0047] like Figure 1 and Figure 4 As shown, in another embodiment, two opposite inner sides of the four inner sides of the annular magnetic conductive member 210 facing the food placement area 101 from four directions are respectively provided with a plurality of magnetic field generating members 220 of the same number, and the plurality of magnetic field generating members 220 are arranged at intervals along the annular extension direction of the annular magnetic conductive member 210.

[0048] Specifically, the annular magnetic conductive member 210 has two sets of opposite inner side surfaces, i.e., the inner side surface of the annular magnetic conductive member 210 located on the top side of the food placement area 101 and the inner side surface of the annular magnetic conductive member 210 located on the bottom side of the food placement area 101 are a set of opposite inner side surfaces, and the inner side surface of the annular magnetic conductive member 210 located on the left side of the food placement area 101 and the inner side surface of the annular magnetic conductive member 210 located on the right side of the food placement area 101 are a set of opposite inner side surfaces.

[0049] Further, for a group of opposite inner side surfaces of the annular magnetic conductive member 210, each inner side surface is provided with three magnetic field generating members 220. The three magnetic field generating members 220 are arranged at intervals along the annular extension direction of the annular magnetic conductive member 210, that is, along the direction in which the annular magnetic conductive member 210 surrounds the food placement area 101. Figure 4 As shown, the annular magnetic conductive component 210 surrounds the food placement area 101 from left to right along the top and bottom of the food placement area 101, so the three magnetic field generating components 220 arranged on the inner side surface of the annular magnetic conductive component 210 located on the top side of the food placement area 101 are distributed along the left and right directions of the food placement area 101, and the three magnetic field generating components 220 arranged on the inner side surface of the annular magnetic conductive component 210 located on the left side of the food placement area 101 are distributed along the top and bottom directions of the food placement area 101.

[0050] In addition, the three magnetic field generating elements 220 on the two opposite inner side surfaces correspond to each other in the opposite directions of the two inner side surfaces. And for the multiple magnetic field generating elements 220 on the inner side surface of the annular magnetic conductive element 210 in one direction, the multiple magnetic field generating elements 220 are symmetrically distributed about the center line of the corresponding inner side surface of the annular magnetic conductive element 210 that is perpendicular to the distribution direction of the multiple magnetic field generating elements 220.

[0051] In the solution of this embodiment, by respectively setting a plurality of magnetic field generating members 220 of the same number on two opposite inner side surfaces of the four inner side surfaces of the annular magnetic conductive member 210 facing the food placement area 101 from four directions, the plurality of magnetic field generating members are arranged at intervals along the annular extension direction of the annular magnetic conductive member 210. The plurality of magnetic field generating members 220 jointly generate a magnetic field, which helps to further reduce the rate of change of the magnetic field intensity in the distribution direction of the plurality of magnetic field generating members 220, thereby further improving the uniformity of the magnetic field distribution in the area surrounded by the annular magnetic conductive member 210. In addition, by correspondingly setting a plurality of magnetic field generating members 220 on the inner side surface of the annular magnetic conductive member 210, the overall size of the magnetic field generating member 220 can be reduced on the basis of ensuring the uniformity of the magnetic field, thereby reducing the cost.

[0052] It should be noted that in some other embodiments, the number of magnetic field generating elements corresponding to the inner side surface in one direction of the annular magnetic conductive element may also be two, four or more. In addition, among the four inner side surfaces of the annular magnetic conductive element facing the food placement area from four directions, one group of relative inner side surfaces may be provided with a plurality of magnetic field generating elements of the same number, and the other group of relative inner side surfaces may be provided with one magnetic field generating element.

[0053] like Figure 1 and Figure 5 As shown, in another embodiment, the magnetic field device 200 includes an integrally formed annular source magnetic component 230, the shape of the annular source magnetic component 230 matches the inner ring shape of the annular magnetic conductive component 210, and the annular source magnetic component 230 is arranged on the inner side of the annular magnetic conductive component 210, so that the annular source magnetic component 230 and the parts corresponding to the four inner sides of the annular magnetic conductive component 210 facing the food placement area 101 constitute a magnetic field generating component.

[0054] Specifically, the shape of the annular source magnetic member 230 is substantially the same as that of the annular magnetic conductive member 210, and the outer ring size of the annular source magnetic member 230 matches the inner ring size of the annular magnetic conductive member 210, so that the annular source magnetic member 230 can be placed inside the annular magnetic conductive member 210. In other words, the annular source magnetic member 230 surrounds the food placement area 101 from four directions, and the annular magnetic conductive member 210 surrounds the food placement area 101 from four directions and surrounds the side of the annular source magnetic member 230 away from the food placement area 101. Therefore, the four inner side surfaces of the annular magnetic conductive member 210 facing the food placement area 101 from four directions and between the food placement area 101 have a part of the annular source magnetic member 230 to form a magnetic field generating component.

[0055] It should be noted that the annular source magnetic component can be an integral annular permanent magnetic sheet, or an annular component formed by bending an electromagnetic coil. Two annular source magnetic components can also be arranged inside the annular magnetic conductive component, a permanent magnetic sheet and an electromagnetic coil.

[0056] In the solution of the present embodiment, an integrally formed annular source magnetic component 230 is provided on the inner side of the annular magnetic conductive component 210, so that the assembly of the magnetic field device is made easier while ensuring that the magnetic field formed by the magnetic field device has good uniformity, because the integrally formed annular source magnetic component 230 can be installed in place together with the annular magnetic conductive component 210 at one time without the need for multiple installations, thus making the installation process easier.

[0057] In combination with the foregoing, it can be understood that the magnetic field generating component arranged on the inner side of the annular magnetic conductive member can be a permanent magnet sheet, or an electromagnetic coil, or a structure composed of a permanent magnet sheet and an electromagnetic coil.

[0058] like Figure 6 and Figure 7 As shown, in one embodiment, the refrigerator is formed with a food placement area 101. The refrigerator includes a magnetic field device 200, and the magnetic field device 200 includes an annular magnetic conductive member 210, and the annular magnetic conductive member 210 is used to surround the food placement area 101 from four directions, and the four inner sides of the annular magnetic conductive member 210 facing the food placement area 101 from four directions are all provided with magnetic field generating components, and the magnetic field generating components are used to generate a magnetic field, and the inner side of the annular magnetic conductive member 210 completely covers the magnetic field generating components along the direction pointing to the food placement area 101.

[0059] like Figure 6 and Figure 7 As shown, specifically, the refrigerator includes a box body 10. The box body 10 is formed with a storage compartment 11, and a part of the space in the storage compartment 11 is used as a food placement area 101, and the food placement area 101 is used to place food.

[0060] It should be noted that a drawer may be provided in the storage room, and the inner space of the drawer may be used as the food placement area, or a partition may be provided in the storage room, and the partition may separate the food placement area. The storage device in the aforementioned embodiment may also be provided in the storage room, and the inner space of the storage device may be used as the food placement area. Alternatively, a complete storage room formed by the box body may be used as the food placement area, and the magnetic field device may be provided in the box body wall of the room formed by the box body.

[0061] It should be noted that the box body is generally formed with multiple storage compartments, and the multiple storage compartments can be used to achieve different functions, such as a refrigeration compartment, a freezing compartment, a variable temperature compartment, etc. For the refrigerator of the present application, those skilled in the art can configure the specific number, function and layout of the storage compartments according to the needs. The magnetic field device can be set in one storage compartment, or in multiple storage compartments.

[0062] It should be noted that a food placement area and a magnetic field device may also be provided on the door of the refrigerator.

[0063] Reference Figure 6 and Figure 7 As shown, the annular magnetic conductive member 210 is a belt-shaped member in a square ring shape as a whole. The annular magnetic conductive member 210 surrounds the outer periphery of the food placement area 101, specifically, the annular magnetic conductive member 210 surrounds the food placement area 101 from four directions of top, bottom, left and right.

[0064] Furthermore, a magnetic field generating member 220 is provided on each of the four inner side surfaces of the annular magnetic conductive member 210 facing the food placement area 101 from four directions, and the magnetic field generating member 220 constitutes a magnetic field generating component between each inner side surface and the food placement area 101 .

[0065] In the scheme of this embodiment, the annular magnetic conductive member 210 is made to surround the food placement area 101, and magnetic field generating components are arranged on the four inner sides of the annular magnetic conductive member 210 facing the food placement area 101 from four directions, so that the magnetic field generating component can generate a magnetic field. Therefore, there are magnetic field generating components in the four directions of the food placement area 101 to generate magnetic fields, and the annular magnetic conductive member 210 covers the magnetic field generating components, which plays a role in shielding and guiding the magnetic field generated by the magnetic field generating components, so that the magnetic field generated by the magnetic field generating components is concentrated in the space covered by the annular magnetic conductive member 210, reducing magnetic field leakage and improving magnetic field utilization. Moreover, the magnetic field is distributed more evenly in the area surrounded by the annular magnetic conductive member 210, thereby improving the uniformity of the magnetic field in the corresponding area in the food placement area 101. In addition, the annular magnetic conductive member 210 has a simple structure, is easy to process, and also makes the installation of the magnetic field device more convenient.

[0066] With reference to the foregoing embodiments, in some other implementations of this embodiment, the magnetic field generating component may also be composed of a plurality of magnetic field generating parts, or may be composed of an integrally formed annular source magnetic part.

[0067] Reference Figure 6 and Figure 7 As shown, the refrigerator further includes an evaporator 20 and a refrigeration fan 30, the evaporator 20 can release cold energy, and the refrigeration fan 30 can generate a refrigeration airflow carrying cold energy, and make the refrigeration airflow flow to the storage compartment 11 to refrigerate the storage compartment 11. That is, the food placement area 101 is refrigerated.

[0068] In addition, it should be noted that, in the case where the refrigerator can have an ordinary storage compartment and a storage compartment equipped with a magnetic field device, the storage compartment of the refrigerator used to achieve magnetic field storage can use a separate refrigeration system, or it can share a refrigeration system with an ordinary refrigeration compartment, or it can also share a refrigeration system with an ordinary freezer compartment.

[0069] like Figure 6As shown, further, the refrigerator includes a plurality of magnetic field devices 200, and the plurality of magnetic field devices 200 are arranged and distributed along one direction. Specifically, the refrigerator includes three magnetic field devices 200, and the three magnetic field devices 200 are arranged in sequence along the front-back direction of the box body 10.

[0070] It should be noted that in some other embodiments, the number of magnetic field devices may be two, four or more. In addition, when the food placement area is small, only one magnetic field device may be provided.

[0071] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A magnetic field device for a refrigerator, characterized in that: include: An annular magnetic conductive member is used to surround the food placement area of ​​the refrigerator from four directions, and the four inner side surfaces of the annular magnetic conductive member facing the food placement area from four directions are provided with magnetic field generating components, the magnetic field generating components are used to generate a magnetic field, and the inner side surface of the annular magnetic conductive member completely covers the magnetic field generating components along the direction pointing to the food placement area.

2. The magnetic field device for a refrigerator according to claim 1, characterized in that: Each of the four inner side surfaces of the annular magnetic conductive member facing the food placement area from four directions is provided with at least one magnetic field generating member, and the magnetic field generating member constitutes the magnetic field generating component between each of the inner side surfaces and the food placement area.

3. The magnetic field device for a refrigerator according to claim 2, characterized in that: The annular magnetic conductive member has two opposite inner side surfaces among four inner side surfaces facing the food placement area from four directions, respectively, provided with a plurality of magnetic field generating elements of the same number, and the plurality of magnetic field generating elements are arranged at intervals along the annular extension direction of the annular magnetic conductive member.

4. The magnetic field device for a refrigerator according to claim 1, characterized in that: The magnetic field device includes an integrally formed annular source magnetic component, the shape of which matches the inner ring shape of the annular magnetic conductive component, and the annular source magnetic component is arranged on the inner side of the annular magnetic conductive component, so that the annular source magnetic component and the parts corresponding to the four inner sides of the annular magnetic conductive component facing the food placement area constitute the magnetic field generating component.

5. The magnetic field device for a refrigerator according to claim 1, characterized in that: The magnetic field generating component is a permanent magnetic sheet, or the magnetic field generating component is an electromagnetic coil, or the magnetic field generating component is a structure composed of a permanent magnetic sheet and an electromagnetic coil.

6. A magnetic field fresh-keeping container for a refrigerator, characterized in that: include: A storage device, wherein the storage device is formed with a food placement area; and At least one magnetic field device according to any one of claims 1 to 5, wherein the annular magnetic conductive member of the magnetic field device surrounds the side wall of the storage device and surrounds the food placement area from four directions, and the magnetic field generating component is arranged between the annular magnetic conductive member and the side wall of the storage device.

7. The magnetic field fresh-keeping container for refrigerator according to claim 6, characterized in that: The opposite sides of the magnetic field generating component are respectively in contact with the annular magnetic conductive member and the side wall of the storage device, so that the magnetic field device can be supported by the side wall of the storage device.

8. The magnetic field fresh-keeping container for refrigerator according to claim 6, characterized in that: The magnetic field preservation container comprises a plurality of magnetic field devices, and the plurality of magnetic field devices are arranged and distributed along one direction.

9. A refrigerator, characterized in that: The refrigerator is formed with a food placement area, and the refrigerator includes at least one magnetic field device according to any one of claims 1 to 5, and the annular magnetic conductive member of the magnetic field device surrounds the food placement area from four directions.

10. The refrigerator according to claim 9, characterized in that: The refrigerator comprises a plurality of the magnetic field devices, and the plurality of the magnetic field devices are arranged and distributed along one direction.

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