Magnetic field device and refrigerator

Abstract

The utility model provides a magnetic field device and a refrigerator. The magnetic field device comprises an annular magnetic conduction piece which comprises two uniform magnetic parts and two magnetic conduction parts, the two uniform magnetic parts are oppositely arranged, the two magnetic conduction parts are oppositely arranged, the magnetic conduction parts are located between the two uniform magnetic parts, and the annular magnetic conduction piece is integrally formed and provided with a connecting position; therefore, the annular magnetic conductive parts form an annular magnetic conductive path after being connected at the joints; the two magnetic field generating pieces correspond to the two uniform magnetism parts respectively, are arranged on the sides, facing the inner side of the annular magnetic conduction path, of the uniform magnetism parts, and are used for being arranged on the two opposite sides of a food material containing area of the refrigerator respectively so as to generate a magnetic field in the food material containing area; the magnetic field device is provided with a packaging layer, and the packaging layer wraps the periphery of a structure composed of the annular magnetic conductive piece and the two magnetic field generating pieces. The magnetic field device is of an integral structure, so that the installation process of the magnetic field device in the refrigerator is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration and fresh-keeping, in particular to a magnetic field device 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 temperature and improve the preservation of food. Therefore, refrigerators are also actively exploring the introduction of magnetic fields into fresh-keeping storage to improve the preservation effect of refrigerators. However, the structure of the magnetic field device used in refrigerators is usually complicated, so that there are certain inconveniences in installation. Utility Model Content

[0004] An object of the utility model is to provide a magnetic field device and a refrigerator which are helpful to facilitate the installation of a magnetic field structure in a refrigerator.

[0005] In particular, the utility model provides a magnetic field device, comprising:

[0006] An annular magnetic conductive member, the annular magnetic conductive member comprising two shim magnetic parts and two magnetic conductive parts, the two shim magnetic parts are arranged opposite to each other, the two magnetic conductive parts are arranged opposite to each other, and the magnetic conductive part is located between the two shim magnetic parts, the annular magnetic conductive member is integrally formed and has a connection point, so that the annular magnetic conductive member is connected at the connection point so that the two shim magnetic parts and the two magnetic conductive parts form an annular magnetic conductive path; and

[0007] Two magnetic field generating members, the two magnetic field generating members are respectively arranged corresponding to the two uniform magnetic parts, and are arranged on the side of the uniform magnetic part facing the inner side of the annular magnetic conductive path, and the two magnetic field generating members are used to be respectively arranged on the opposite sides of the food placement area of ​​the refrigerator to generate a magnetic field in the food placement area;

[0008] Furthermore, the magnetic field device has a packaging layer, and the packaging layer is wrapped around the periphery of the structure composed of the annular magnetic conductive component and the two magnetic field generating components.

[0009] Optionally, the connection point is located between one of the magnetic conductive parts and one of the uniform magnetic parts, so that the annular magnetic conductive path is formed after the magnetic conductive part and the uniform magnetic part are connected.

[0010] Optionally, the sides of one of the magnetic conductive parts and one of the uniform magnetic parts are tightly joined to form the connection.

[0011] Optionally, an overlapping flange is formed at one end of one of the magnetic conductive parts close to one of the uniform magnetic parts, and the overlapping flange is overlapped on the surface of one of the uniform magnetic parts along the distribution direction of the two uniform magnetic parts, thereby forming the connection.

[0012] Optionally, one of the magnetic conductive parts has a first part and a second part, the first part and the second part are respectively integrally formed with the two uniform magnetic parts, and the connection point is located between the first part and the second part.

[0013] Optionally, the side edges of the first part and the second part are tightly joined along the distribution direction of the two uniform magnetic parts, thereby forming the connection.

[0014] Optionally, the ratio of the length of the first portion to the length of the other magnetic conductive portion is greater than or equal to 0.5 and less than or equal to 0.8; or,

[0015] The ratio of the length of the second portion to the length of the other magnetic conductive portion is greater than or equal to 0.5 and less than or equal to 0.8.

[0016] Optionally, the width of the magnetic conductive portion is the same as that of the magnetically unidirectional portion.

[0017] Optionally, the magnetic field generating element is a permanent magnetic sheet, or the magnetic field generating element is an electromagnetic coil, or the magnetic field generating element is a component composed of a permanent magnetic sheet and an electromagnetic coil.

[0018] In another aspect of the utility model, a refrigerator is provided, comprising:

[0019] A box body, wherein the box body is formed with a food placement area; and

[0020] According to any one of the above-mentioned magnetic field devices, the magnetic field device is used to generate a magnetic field in the food placement area, and the two magnetic field generating elements are respectively located on opposite sides of the food placement area, and the two magnetic conductive parts are respectively located on opposite sides of the food placement area.

[0021] The magnetic field device and refrigerator of the utility model form a magnetic field device by arranging a packaging layer on the periphery of an integrally formed annular magnetic conductive part and a magnetic field generating part. The magnetic field generating part can generate a magnetic field, and the annular magnetic conductive part can guide the magnetic field generated by the magnetic field generating part, so that the magnetic field generated by the magnetic field generating part is concentrated in the food placement area, and the uniformity of the magnetic field in the food placement area is improved, so that the food in the food placement area is subjected to a uniform magnetic field, so as to achieve low-temperature storage of the food under the action of the magnetic field, and improve the preservation effect of the food. In addition, the magnetic field device is an integral structure packaged together, which can be installed in the refrigerator as a whole and installed in place at one time, so that the installation process of the magnetic field device in the refrigerator is more convenient. In addition, the packaging layer can protect the structure composed of the annular magnetic conductive part and the magnetic field generating part, reduce the erosion of moisture on the annular magnetic conductive part and the magnetic field generating part, and thus reduce the damage of the annular magnetic conductive part and the magnetic field generating part.

[0022] 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

[0023] 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:

[0024] Figure 1 is a first schematic diagram of a refrigerator according to an embodiment of the utility model;

[0025] Figure 2 is a second schematic diagram of a refrigerator according to an embodiment of the utility model;

[0026] Figure 3 is a first schematic diagram of a magnetic field device according to an embodiment of the utility model;

[0027] Figure 4 is a second schematic diagram of a magnetic field device according to an embodiment of the utility model;

[0028] Figure 5 is a third schematic diagram of a magnetic field device according to an embodiment of the utility model;

[0029] Figure 6 This is a first schematic diagram of an annular magnetic conductive member in a magnetic field device according to an embodiment of the utility model;

[0030] Figure 7 is a second schematic diagram of an annular magnetic conductive member in a magnetic field device according to an embodiment of the utility model;

[0031] Figure 8 is a schematic diagram of a magnetic field generating element in a magnetic field device according to an embodiment of the utility model;

[0032] Fig. 9 is a schematic diagram of a magnetic field generating element in a magnetic field device according to another embodiment of the utility model;

[0033] Fig.10 is a schematic diagram of an annular magnetic conductive member in a magnetic field device according to another embodiment of the utility model;

[0034] Fig.11 is a first schematic diagram of an annular magnetic conductive member in a magnetic field device according to another embodiment of the utility model;

[0035] Fig.12 is a second schematic diagram of an annular magnetic conductive member in a magnetic field device according to another embodiment of the utility model;

[0036] Fig.13 is a third schematic diagram of an annular magnetic conductive member in a magnetic field device according to yet another embodiment of the utility model;

[0037] Fig.14 is a schematic diagram of an annular magnetic conductive member in a magnetic field device according to another embodiment of the utility model;

[0038] Fig.15 is a first schematic diagram of an annular magnetic conductive member in a magnetic field device according to another embodiment of the utility model;

[0039] Fig.16 It is a second schematic diagram of an annular magnetic conductive member in a magnetic field device according to another embodiment of the utility model. DETAILED DESCRIPTION

[0040] 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.

[0041] 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", "axial", "radial", "circumferential", "clockwise", "counterclockwise" 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 referred device or element 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.

[0042] Furthermore, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0043] like Figures 1 to 7 As shown, in one embodiment, the refrigerator includes a box body 100 and a magnetic field device 200. The box body 100 is formed with a storage compartment 101, and part of the space in the storage compartment 101 is used as a food placement area 102, and the food placement area 102 is used to place food. Specifically, a drawer can be arranged in the storage compartment, and the inner space of the drawer is used as the food placement area, or a partition can be arranged in the storage compartment, and the partition separates the food placement area.

[0044] Further, the magnetic field device 200 includes an annular magnetic conductive member 210 and two magnetic field generating members 220. The annular magnetic conductive member 210 includes two uniform magnetic parts 211 and two magnetic conductive parts 212, the two uniform magnetic parts 211 are arranged opposite to each other, the two magnetic conductive parts 212 are arranged opposite to each other, and the magnetic conductive part 212 is located between the two uniform magnetic parts 211. The annular magnetic conductive member 210 is integrally formed and has a connection 201, so that the annular magnetic conductive member 210 forms a ring magnetic conductive path after the two uniform magnetic parts 211 and the two magnetic conductive parts 212 are connected at the connection 201. The two magnetic field generating members 220 are respectively arranged corresponding to the two uniform magnetic parts 211, and are arranged on the side of the uniform magnetic part 211 facing the inner side of the ring magnetic conductive path. The two magnetic field generating members 220 are used to be respectively arranged on both sides of the food placement area 102 to generate a magnetic field in the food placement area 102. The magnetic field device 200 has a packaging layer 230 , which is wrapped around the periphery of a structure consisting of an annular magnetic conductive member 210 and two magnetic field generating members 220 .

[0045] Reference Figures 1 to 7 As shown, specifically, the connection 201 of the annular magnetic conductive member 210 is located between one of the magnetic conductive parts 212 and one of the uniform magnetic parts 211, so that the two uniform magnetic parts 211 and the two magnetic conductive parts 212 form an annular magnetic conductive path after the magnetic conductive part 212 and the uniform magnetic part 211 are connected. Specifically, the side edges of one of the magnetic conductive parts 212 and one of the uniform magnetic parts 211 are tightly joined, so as to form the connection 201.

[0046] Reference Figures 5 to 7 As shown, specifically, both the uniform magnetic part 211 and the magnetic conductive part 212 are plate-like structures, but the size of the uniform magnetic part 211 in a direction perpendicular to the distribution direction of the two magnetic conductive parts 212 is larger than the size of the magnetic conductive part 212 in a direction perpendicular to the distribution direction of the two magnetic conductive parts 212. The annular magnetic conductive part 210 is made of magnetic conductive material, such as silicon steel material. The annular magnetic conductive part 210 can be initially formed by a punching process, that is, the initially formed annular magnetic conductive part 210 is a straight plate-like structure. And one of the magnetic conductive parts 212 is integrally connected with both the uniform magnetic parts 211, and the other magnetic conductive part 212 is only integrally connected with one uniform magnetic part 211. One of the uniform magnetic parts 211 is integrally connected with both the magnetic conductive parts 212, and the other uniform magnetic part 211 is only integrally connected with one magnetic conductive part 212.

[0047] Reference Figure 6 and Figure 7 As shown, further, the initially formed annular magnetic conductive part 210 is bent at the boundary between the uniform magnetic part 211 and the magnetic conductive part 212, so that the side of the magnetic conductive part 212 that is integrally connected to only one uniform magnetic part 211 and the side of the uniform magnetic part 211 that is integrally connected to only one magnetic conductive part 212 are combined together (for example, by bonding or welding), thereby forming an annular magnetic conductive path with two uniform magnetic parts 211 facing each other and two magnetic conductive parts 212 facing each other.

[0048] Reference Figures 3 to 5 As shown, two magnetic field generating elements 220 are respectively arranged corresponding to the two uniform magnetic parts 211, and are arranged on the side of the uniform magnetic part 211 facing the inner side of the ring magnetic path. Specifically, the magnetic field generating element 220 is attached to the side of the uniform magnetic part 211 facing the inner side of the ring magnetic path. The magnetic field generating element 220 is used to generate a magnetic field.

[0049] It should be noted that the magnetic field generating element can be a permanent magnet or an electromagnetic coil, and an electromagnetic coil that is energized can generate a magnetic field.

[0050] Alternatively, the magnetic field generating element may also be a structure composed of a permanent magnet sheet and an electromagnetic coil. Figure 8 As shown, the magnetic field generating element 220 includes an electromagnetic coil 221 and a permanent magnetic sheet 222. The electromagnetic coil 221 is attached to one side of the permanent magnetic sheet 222. The electromagnetic coil 221 and the permanent magnetic sheet 222 jointly generate a magnetic field.

[0051] It should be noted that electromagnetic coils may also be provided on both sides of the permanent magnet sheet.

[0052] like Fig. 9 As shown, in some other embodiments, the magnetic field generating element 220 includes an electromagnetic coil 221 and a permanent magnet sheet 222, and the electromagnetic coil 221 surrounds the permanent magnet sheet 222. Specifically, the permanent magnet sheet 222 is arranged in the area surrounded by the electromagnetic coil 221, and the permanent magnet sheet 222 can be smaller than the area surrounded by the electromagnetic coil 221, or can be exactly equal, so that the electromagnetic coil 221 fits the side of the permanent magnet sheet 222.

[0053] like Figure 3 and Figure 4 As shown, the magnetic field device 200 has a packaging layer 230, and the packaging layer 230 is wrapped around the periphery of the structure composed of the annular magnetic conductive member 210 and the two magnetic field generating members 220. Specifically, the packaging layer 230 can be formed by plastic packaging, injection molding or glue pouring.

[0054] It should be noted that the magnetic field generating component and the initially formed annular magnetic conductive component can be assembled in place and then packaged, and then the packaged overall structure can be bent, or the initially formed annular magnetic conductive component can be bent and assembled with the magnetic field generating component and then packaged.

[0055] Reference Figure 1 and Figure 2 As shown, the magnetic field device 200 is used to be installed in the storage compartment 101, and the two magnetic field generating members 220 are respectively located at the top and bottom sides of the food placement area 102, and the two magnetic conductive parts 212 are respectively located at the left and right sides of the food placement area 102. That is, the annular magnetic conductive path surrounds the food placement area 102.

[0056] It should be noted that the two magnetic field generating elements can also be located on the left and right sides of the food placement area, and the two magnetic conductive parts can be located on the top and bottom sides of the food placement area. In other words, the two magnetic field generating elements can be located on the opposite sides of the food placement area, and the two magnetic conductive parts can be located on the opposite sides of the food placement area.

[0057] Reference Figure 1 and Figure 2As shown, the refrigerator further includes an evaporator 300 and a refrigeration fan 400, the evaporator 300 can release cold energy, and the refrigeration fan 400 can generate a refrigeration airflow carrying cold energy, and make the refrigeration airflow flow to the storage compartment 101 to refrigerate the storage compartment 101. That is, to refrigerate the food placement area 102.

[0058] In the scheme of this embodiment, the magnetic field device 200 is formed by setting a packaging layer 230 on the outer periphery of the integrally formed annular magnetic conductive member 210 and the magnetic field generating member 220. The magnetic field generating member 220 can generate a magnetic field, and the annular magnetic conductive member 210 can guide the magnetic field generated by the magnetic field generating member 220, so that the magnetic field generated by the magnetic field generating member 220 is concentrated in the food placement area 102, and the uniformity of the magnetic field in the space of the food placement area 102 is improved, so that the food in the food placement area 102 is subjected to a uniform magnetic field, so as to realize the low-temperature storage of the food under the action of the magnetic field, and improve the preservation effect of the food. In addition, the magnetic field device 200 is an integral structure packaged together, which can be installed in the refrigerator as a whole and installed in place at one time, so that the installation process of the magnetic field device 200 in the refrigerator is more convenient. In addition, the packaging layer 230 can protect the structure composed of the annular magnetic conductive member 210 and the magnetic field generating member 220, reduce the erosion of the annular magnetic conductive member 210 and the magnetic field generating member 220 by moisture, and thus reduce the damage of the annular magnetic conductive member 210 and the magnetic field generating member 220.

[0059] 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.

[0060] 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.

[0061] It should be noted that, in some other embodiments, the entire storage compartment may also be used as a food placement area, that is, the magnetic field device may be disposed in the inner layer of the compartment wall constituting the storage compartment.

[0062] Reference Fig.10As shown, in another embodiment, different from the above embodiment, a lap flange 213 is formed at one end of one of the magnetic conductive parts 212 of the annular magnetic conductive member 210 close to one of the uniform magnetic parts 211, and the lap flange 213 is overlapped on the surface of one of the uniform magnetic parts 211 along the distribution direction of the two uniform magnetic parts 211, thereby forming a connection 201.

[0063] by Fig.10 Taking the illustrated orientation as an example, the two uniform magnetic parts 211 are distributed in the up-down direction, and the overlapping flange 213 of the magnetic conductive part 212 overlaps the upper surface of the uniform magnetic part 211 in the up-down direction. In other words, the overlapping part of the overlapping flange 213 of the magnetic conductive part 212 and the uniform magnetic part 211 is the connection 201 of the annular magnetic conductive part 210.

[0064] By providing an overlapping flange 213 on the magnetic conductive part 212 so that the overlapping flange 213 overlaps with the uniform magnetic part 211 , the connection of the connection 201 of the annular magnetic conductive part 210 is achieved, which helps to make the connection of the connection 201 more stable.

[0065] It should be noted that the overlapping flange and the shimming part can be welded or bonded together after overlapping, or can be fixed together by screws passing through the overlapping flange and the shimming part.

[0066] like Figures 11 to 13 As shown, in another embodiment, different from the above embodiment, one of the magnetic conductive parts 212 of the annular magnetic conductive member 210 has a first part 2121 and a second part 2122, and the first part 2121 and the second part 2122 are respectively integrally formed with the two uniform magnetic parts 211, and the connection 201 is located between the first part 2121 and the second part 2122.

[0067] Reference Figures 11 to 13 As shown, specifically, the side edges of the first portion 2121 and the second portion 2122 are tightly joined along the distribution direction of the two uniform magnetic portions 211, thereby forming a connection 201. Specifically, the annular magnetic conductive member 210 can be initially formed into a straight plate-shaped structure by a punching process, and one of the magnetic conductive portions 212 is respectively formed into a first portion 2121 and a second portion 2122. In other words, the initially formed annular magnetic conductive member 210 has a complete magnetic conductive portion 212 and a magnetic conductive portion 212 divided into a first portion 2121 and a second portion 2122.

[0068] Furthermore, the complete magnetic conductive part 212 is integrally formed with the two uniform magnetic parts 211, the first part 2121 of the other magnetic conductive part 212 is integrally formed with one uniform magnetic part 211, and the second part 2122 is integrally formed with the other uniform magnetic part 211. The preliminarily formed annular magnetic conductive part 210 is bent at the boundary between the uniform magnetic part 211 and the magnetic conductive part 212, so that the sides of the first part 2121 and the second part 2122 are combined together (for example, by bonding or welding), thereby forming a complete magnetic conductive part 212, and further forming an annular magnetic conductive path with two uniform magnetic parts 211 facing each other and two magnetic conductive parts 212 facing each other.

[0069] By setting the connection 201 of the annular magnetic conductive member 210 at one of the magnetic conductive parts 212, the parts on both sides of the connection 201 guide the magnetic field in the same direction. Compared with setting the connection 201 between the uniform magnetic part and the magnetic conductive part, it helps to ensure better continuity in guiding the magnetic field.

[0070] It should be noted that if Fig.14 As shown, in some other embodiments, when one of the magnetic conductive parts 212 has a first part 2121 and a second part 2122, the first part 2121 and the second part 2122 may also overlap to form a connection, that is, the first part 2121 and the second part 2122 are overlapped along the distribution direction of the two magnetic conductive parts 212.

[0071] Reference Fig.11 As shown, further, the ratio of the length of the first part 2121 to the other magnetic conductive part 212 is greater than or equal to 0.5 and less than or equal to 0.8. Specifically, the length of the first part 2121 and the magnetic conductive part 212 is the size of the first part 2121 and the magnetic conductive part 212 along the distribution direction of the two uniform magnetic parts 211. The length of the first part 2121 is d1, and the length of the other magnetic conductive part 212 is d2, that is, d1 / d2 is greater than or equal to 0.5 and less than or equal to 0.8, for example, it can be 0.5, 0.6, 0.65, 0.7, 0.72 or 0.8, etc. Through the above structure, it is avoided that the connection between the first part 2121 and the second part 2122 is too close to a uniform magnetic part 211, thereby avoiding inconvenience in connection, and it also helps to ensure better guidance of the magnetic field.

[0072] It should be noted that the ratio of the length of the second portion to the length of the other magnetic conductive portion may be greater than or equal to 0.5 and less than or equal to 0.8. In other words, only one of the first portion and the second portion needs to meet the requirement.

[0073] like Fig.15 and Fig.16As shown, in one embodiment, the width of the magnetic conductive part 212 is the same as that of the uniform magnetic part 211. That is, the dimension of the uniform magnetic part 211 in a direction perpendicular to the distribution direction of the two magnetic conductive parts 212 is equal to the dimension of the magnetic conductive part 212 in a direction perpendicular to the distribution direction of the two magnetic conductive parts 212. In other words, the structure of the annular magnetic conductive part 210 when forming an annular magnetic conductive path is a square box-shaped structure with openings at both ends.

[0074] By making the widths of the magnetic conductive portion 212 and the uniform magnetic portion 211 the same, the production of the annular magnetic conductive member 210 is facilitated.

[0075] 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, characterized in that: include: An annular magnetic conductive member, the annular magnetic conductive member comprises two uniform magnetic parts and two magnetic conductive parts, the two uniform magnetic parts are arranged opposite to each other, the two magnetic conductive parts are arranged opposite to each other, and the magnetic conductive part is located between the two uniform magnetic parts, the annular magnetic conductive member is integrally formed, and has a connection point, so that the annular magnetic conductive member is connected at the connection point so that the two uniform magnetic parts and the two magnetic conductive parts form an annular magnetic conductive path; as well as Two magnetic field generating members, the two magnetic field generating members are respectively arranged corresponding to the two uniform magnetic parts, and are arranged on the side of the uniform magnetic part facing the inner side of the annular magnetic conductive path, and the two magnetic field generating members are used to be respectively arranged on the opposite sides of the food placement area of ​​the refrigerator to generate a magnetic field in the food placement area; Furthermore, the magnetic field device has a packaging layer, and the packaging layer is wrapped around the periphery of the structure composed of the annular magnetic conductive component and the two magnetic field generating components.

2. The magnetic field device according to claim 1, characterized in that: The connection point is located between one of the magnetic conductive parts and one of the uniform magnetic parts, so that the annular magnetic conductive path is formed after the magnetic conductive part and the uniform magnetic part are connected.

3. The magnetic field device according to claim 2, characterized in that: The sides of one of the magnetic conductive parts and one of the shimming parts are tightly joined to form the connection.

4. The magnetic field device according to claim 2, characterized in that: An overlapping flange is formed at one end of one of the magnetic conductive parts close to one of the uniform magnetic parts, and the overlapping flange is overlapped on the surface of one of the uniform magnetic parts along the distribution direction of the two uniform magnetic parts, thereby forming the connection.

5. The magnetic field device according to claim 1, characterized in that: One of the magnetic conductive parts has a first part and a second part, the first part and the second part are respectively integrally formed with the two uniform magnetic parts, and the connection point is located between the first part and the second part.

6. The magnetic field device according to claim 5, characterized in that: The side edges of the first part and the second part are tightly joined along the distribution direction of the two shim parts, thereby forming the connection.

7. The magnetic field device according to claim 6, characterized in that: The ratio of the length of the first portion to the length of the other magnetic conductive portion is greater than or equal to 0.5 and less than or equal to 0.8; or, The ratio of the length of the second portion to the length of the other magnetic conductive portion is greater than or equal to 0.5 and less than or equal to 0.

8.

8. The magnetic field device according to claim 1, characterized in that: The width of the magnetic conductive part is the same as that of the magnetically unidirectional part.

9. The magnetic field device 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 component composed of a permanent magnetic sheet and an electromagnetic coil.

10. A refrigerator, characterized in that: include: A box body, wherein the box body is formed with a food placement area; and According to any one of claims 1 to 9, the magnetic field device is used to generate a magnetic field in the food placement area, and the two magnetic field generating elements are respectively located on opposite sides of the food placement area, and the two magnetic conductive parts are respectively located on opposite sides of the food placement area.

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