Magnetic field fresh-keeping storage container and refrigerator

Abstract

The invention provides a magnetic field fresh-keeping storage container and a refrigerator. The magnetic field fresh-keeping storage container comprises a barrel body and a magnetic field sensor, wherein the barrel body is internally provided with a fresh-keeping storage space for placing stored objects; the first magnetic field assembly and the second magnetic field assembly are arranged on a set of opposite side walls of the barrel body correspondingly and configured to form a magnetic field in the fresh-keeping storage space, the first magnetic field assembly and the second magnetic field assembly each comprise a magnetic source piece and a magnetic conduction plate, and the magnetic source pieces are attached to the central areas of the magnetic conduction plates; extension parts are formed on the two sides of the central region of the magnetic conductive plate; and each magnetic field connecting piece is arranged on one side wall connected with the side wall where the first magnetic field assembly and the second magnetic field assembly are located, and is connected with the extension part, so that magnetic communication with the first magnetic field assembly and the second magnetic field assembly is realized. According to the scheme, when the magnetic field connecting piece gathers the magnetic field outside the storage space, the magnetic field distribution inside the storage space can be prevented from being affected.

Description

Technical Field

[0001] The invention relates to a refrigeration and freezing storage device, in particular to a magnetic field fresh-keeping storage container and a refrigerator. Background Art

[0002] Fresh meat, fish and shrimp are prone to juice loss during storage, which leads to poor taste and darker color. As people's demand for quality of life increases, higher requirements are also placed on the preservation and storage effects of such ingredients. Therefore, the preservation and storage effects of household refrigeration and freezing equipment such as refrigerators have become an important indicator for measuring the performance of such equipment.

[0003] Studies have found that magnetic fields can inhibit the growth of microorganisms and molds and extend the storage period. In a frozen environment, the magnetic field limits the free path of water molecules to a certain extent, which is manifested as the breaking of hydrogen bonds in water molecule clusters. During the phase change process, the growth of crystal nuclei is inhibited, the growth rate of ice crystals is higher than the migration rate of water molecules, and the resulting ice crystals are smaller, which reduces the damage to cells and the juice loss rate, and the nutrition and taste of the food are better preserved. In a refrigerated environment, the magnetic field can reduce the supercooling of food. For example, the freezing temperature of beef is -2°C. When the magnetic field acts on beef, the freezing temperature of beef can drop to -5°C, so that the beef can be refrigerated at a lower temperature and remain fresh.

[0004] However, when applying magnetic field preservation technology in household refrigeration and freezing equipment, such as refrigerators, it is difficult to form a stable and uniform magnetic field in the storage space due to space limitations, which limits the further application of this technology. Summary of the invention

[0005] An object of the present invention is to provide a magnetic field fresh-keeping storage container and a refrigerator which can effectively improve the fresh-keeping effect.

[0006] A further object of the present invention is to ensure a uniform and stable distribution of the magnetic field in the storage space.

[0007] Another further object of the present invention is to minimize the space occupied by the magnetic device.

[0008] In particular, the present invention provides a magnetic field fresh-keeping storage container, which comprises:

[0009] The barrel body has a fresh-keeping storage space for storing stored items;

[0010] The first magnetic field assembly and the second magnetic field assembly are respectively arranged on a set of opposite side walls of the barrel body and configured to form a magnetic field in the fresh-keeping storage space. The first magnetic field assembly and the second magnetic field assembly respectively include a magnetic source sheet and a magnetic conductive plate. The magnetic source sheet is attached to the central area of ​​the magnetic conductive plate, and the magnetic conductive plate forms extensions on both sides of the central area.

[0011] At least one magnetic field connector, each magnetic field connector is arranged on a side wall connected to the side wall where the first magnetic field component and the second magnetic field component are located, and is connected to the extension portion, so as to achieve magnetic communication with the first magnetic field component and the second magnetic field component.

[0012] Optionally, a dimension of a contact area between each magnetic field connector and the extension portion along an extension direction of the magnetic field connector is set to be greater than or equal to 1 mm and less than or equal to 10 mm.

[0013] Optionally, at least a portion of the outer extension protrudes toward the interior of the fresh-keeping storage space relative to the central region, so that the central region and at least a portion of the outer extension form a step;

[0014] The magnetic source piece and the step have a set distance.

[0015] Optionally, a central section of the extension is flush with the central region, thereby forming a clearance gap relative to the protruding section; and the magnetic field connection element is connected to the clearance gap section of the extension.

[0016] Optionally, the magnetic field connectors are respectively arranged on another set of opposite side walls of the barrel body, and

[0017] Each side wall is provided with a magnetic field connection member, and the magnetic field connection member is connected to the middle of the side of the first magnetic field component and the second magnetic field component; or

[0018] A plurality of magnetic field connecting members are arranged on each side wall, and the plurality of magnetic field connecting members are arranged at intervals along the extension direction of the corresponding side edges.

[0019] Optionally, each magnetic field connector is provided with flanges at both ends extending toward the magnetic conductive plates of the first magnetic field component and the second magnetic field component, one side of the flange is abutted against the extension, and there is a gap between the end of the flap and the magnetic source sheet.

[0020] Optionally, the magnetic source sheet is attached to the side of the magnetic conductive plate close to the interior of the fresh-keeping storage space, and

[0021] The flange of the magnetic field connector utilizes the side surface away from the interior of the fresh-keeping storage space to abut against the side surface of the extension portion close to the interior of the fresh-keeping storage space.

[0022] Optionally, the magnetic source sheet is a permanent magnet sheet with uniform magnetization; the effective magnetic field strength range of the magnetic field is 10-100GS, and the effective spacing range is 60-240mm.

[0023] Optionally, the first magnetic field assembly and the second magnetic field assembly further include electromagnetic coils, respectively, and the electromagnetic coils are arranged on a side of the corresponding magnetic source sheet opposite to the magnetic conductive plate.

[0024] Optionally, the barrel comprises:

[0025] An inner barrel body, which defines the fresh-keeping storage space;

[0026] The first magnetic field component is disposed above the top wall of the inner barrel body, and the second magnetic field component is disposed below the bottom wall of the inner barrel body; and

[0027] There are two magnetic field connecting members, and the two magnetic field connecting members are respectively arranged on the outer sides of the side walls on the two lateral sides of the inner barrel body.

[0028] Optionally, the area of ​​the bonding region between the magnetic conductive plate and the magnetic source sheet is greater than or equal to 40% of the projection area of ​​the magnetic conductive plate on the plane where the magnetic source sheet is located.

[0029] Optionally, the area of ​​the bonding region between the magnetic conductive plate and the magnetic source sheet is greater than or equal to 90% of the projection area of ​​the magnetic conductive plate on the plane where the magnetic source sheet is located.

[0030] According to another aspect of the present invention, there is also provided a refrigerator comprising any one of the above-mentioned magnetic field fresh-keeping storage containers.

[0031] The magnetic field preservation storage container and refrigerator of the present invention, the first magnetic field component and the second magnetic field component are arranged in a group of opposite side walls of the barrel body, and a magnetic field is formed in the fresh-keeping storage space. The magnetic field helps to improve the storage quality, shorten the freezing time, reduce the juice loss rate and nutrient loss of food, reduce the number of microorganisms and bacteria, and extend the preservation period. The magnetic field connector is arranged on a side wall connected to the side wall where the first magnetic field component and the second magnetic field component are located, and is connected to the extension part, so as to achieve magnetic connection with the first magnetic field component and the second magnetic field component, and form a ring-shaped magnetic conductive path outside the magnetic field preservation space, adjust the distribution of the magnetic field inside the magnetic field preservation space, and gather the magnetic field outside the magnetic field preservation space. Each magnetic field component includes a magnetic source sheet and a magnetic conductive plate, the magnetic source sheet is attached to the central area of ​​the magnetic conductive plate, and the magnetic conductive plate can adjust the magnetic field distribution of the magnetic source sheet, so that the magnetic field in the storage space is more uniform. The magnetic field connector is connected to the extension part formed on both sides of the magnetic source sheet by the magnetic conductive plate, while gathering the magnetic field outside the storage space, avoiding affecting the magnetic field distribution inside the storage space.

[0032] Furthermore, the magnetic field preservation storage container and refrigerator of the present invention optimize the matching structure of the magnetic conductive plate and the magnetic source sheet, that is, the magnetic conductive plate extends at the periphery of the matching area of ​​the magnetic source sheet to form an extension; at least part of the extension protrudes from the plane area toward one side of the magnetic source sheet, so that at least part of the extension forms a step with the plane area; the periphery of the magnetic source sheet and the step have a set spacing. This matching structure is convenient for fixing the magnetic field assembly with the extension, and on the other hand, it also reduces the space occupied and avoids the interference of the connection and fixing structure on the magnetic field.

[0033] Furthermore, in the magnetic field preservation storage container and refrigerator of the present invention, the first magnetic field component, the second magnetic field component, and the magnetic field connector are respectively arranged in the interlayer between the barrel outer shell and the inner barrel body, which reduces the distance between the magnetic field generating element and the stored objects, and is conducive to improving the sealing of the magnetic field preservation storage container. In addition, the user will not see the magnetic field element during normal use, and the visual appearance is better.

[0034] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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:

[0036] Figure 1 It is a schematic diagram of the relative position relationship between the central barrel body and the magnetic field device of the magnetic field preservation storage container according to one embodiment of the present invention;

[0037] Figure 2 is a schematic diagram of a barrel in a magnetic field fresh-keeping storage container according to an embodiment of the present invention;

[0038] Figure 3 is a schematic diagram of a magnetic field device in a magnetic field fresh-keeping storage container according to an embodiment of the present invention;

[0039] Figure 4 It is a schematic diagram of the analysis results of the magnetic field strength at the center point under different contact area sizes between the magnetic field connector and the magnetic conductive plate in a magnetic field fresh-keeping storage container according to an embodiment of the present invention;

[0040] Figure 5 is a schematic diagram of a magnetic field device in a magnetic field fresh-keeping storage container according to an embodiment of the present invention;

[0041] Figure 6 yes Figure 5 An exploded view of the components of the magnetic field device shown;

[0042] Figure 7 It is a schematic diagram of the cooperation between the first magnetic conductive plate and the first magnetic source sheet in a magnetic field preservation storage container according to an embodiment of the present invention and a partial enlarged diagram thereof;

[0043] Figure 8 It is a matching structure of a magnetic field connector and a first magnetic conductive plate in a magnetic field fresh-keeping storage container according to an embodiment of the present invention and a partial enlarged diagram thereof;

[0044] Fig. 9is a schematic diagram of the connection position between the magnetic field connector and the magnetic conductive plate in the magnetic field fresh-keeping storage container according to another embodiment of the present invention;

[0045] Fig.10 is a schematic diagram of the connection position between the magnetic field connector and the magnetic conductive plate in the magnetic field fresh-keeping storage container according to another embodiment of the present invention;

[0046] Fig.11 Schematic diagram of the connection position between the magnetic field connector 431 and the magnetic conductive plate in the magnetic field fresh-keeping storage container 30 according to another embodiment of the present invention;

[0047] Fig.12 is a schematic diagram of a connection method between a magnetic field connector and a magnetic conductive plate in a magnetic field fresh-keeping storage container according to another embodiment of the present invention;

[0048] Fig.13 is a schematic diagram of a connection method between a magnetic field connector and a magnetic conductive plate in a magnetic field fresh-keeping storage container according to another embodiment of the present invention;

[0049] Fig.14 is a schematic diagram of a connection method between a magnetic field connector and a magnetic conductive plate in a magnetic field fresh-keeping storage container according to another embodiment of the present invention;

[0050] Fig.15 It is a schematic diagram of a fixing method of a magnetic field connector and a magnetic conductive plate in a magnetic field fresh-keeping storage container according to an embodiment of the present invention;

[0051] Fig.16 is a schematic diagram of a fixing method of a magnetic field connector and a magnetic conductive plate in a magnetic field fresh-keeping storage container according to another embodiment of the present invention;

[0052] Fig.17 is a front view of a magnetic field fresh-keeping storage container according to an embodiment of the present invention;

[0053] Fig.18 is a schematic diagram of a magnetic field fresh-keeping storage container from another angle according to an embodiment of the present invention;

[0054] Fig.19 yes Fig.17 The cross-sectional view of the magnetic field preservation storage container along the AA direction is shown

[0055] Fig. 20 is a schematic diagram of a refrigerator according to an embodiment of the present invention; and

[0056] Fig.21 yes Fig. 20 The refrigerator shown is a schematic diagram with the upper door hidden. DETAILED DESCRIPTION

[0057] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0058] In the description of the present embodiment, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" 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 embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For example, except for individual explicit definitions of other orientations, in the present embodiment, the direction from the refrigerator body toward the door body is the front, the direction relative to the door body toward the body is the back, the direction toward the ground on which the refrigerator is installed is the bottom, and the direction opposite to the ground is the top.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Figure 1 3 is a schematic diagram of the relative positions of the barrel 310 and the magnetic field device 410 in the magnetic field fresh-keeping storage container 30 according to an embodiment of the present invention. Figure 2 is a schematic diagram of a barrel 310 in a magnetic field fresh-keeping storage container 30 according to an embodiment of the present invention. Figure 3 Schematic diagram of a magnetic field device 410 in a magnetic field fresh-keeping storage container 30 according to an embodiment of the present invention.

[0062] The magnetic field fresh-keeping storage container 30 of this embodiment may generally include: a barrel 310 and a magnetic field device 410. Among them, a fresh-keeping storage space 330 for placing stored objects is provided inside the barrel 310. The barrel 310 may be in the shape of a rectangular parallelepiped. In some embodiments, the barrel 310 may have a forward opening, and a drawer that can be pulled out from the forward opening may be provided inside the barrel 310, so as to use the drawer to hold the stored objects. The barrel 310 may include a barrel top wall 311, a barrel bottom wall 312, a barrel left side wall 314, and a barrel right side wall 315.

[0063] A necessary condition for the magnetic field fresh-keeping storage container 30 to achieve long-term fresh-keeping storage is to apply a magnetic field for fresh-keeping in the fresh-keeping storage space 330. After in-depth research on the fresh-keeping effect, the magnetic field parameters of the magnetic field fresh-keeping storage container 30 of this embodiment are preferably configured as an effective magnetic field strength range: 10-100GS (1-10mT), which can be further set to 20-80GS, and further set to 40GS-60GS, such as 10GS, 20GS, 40GS, 60GS, 80GS, 100GS, etc., and the effective magnetic field spacing range is 60-240mm, that is, the magnetic field can reach the above-mentioned strength requirements within a distance range of 60mm to 240mm from the magnetic source component.

[0064] The magnetic field device 410 in the magnetic field fresh-keeping storage container 30 may include: a first magnetic field component 411 and a second magnetic field component 421, which are respectively arranged on a set of opposite side walls of the barrel body, and are configured to form a magnetic field in the fresh-keeping storage space 330. The first magnetic field component 411 and the second magnetic field component 421 can be respectively arranged on the barrel body top wall 311 and the barrel body bottom wall 312, or the barrel body left side wall 314 and the barrel body right side wall 315. In the embodiment where the magnetic field fresh-keeping storage container 30 uses a drawer-type structure, the distance between the barrel body top wall 311 and the barrel body bottom wall 312 is smaller and the area is larger, and the first magnetic field component 411 and the second magnetic field component 421 are preferably arranged on the barrel body top wall 311 and the barrel body bottom wall 312.

[0065] In some embodiments, the first magnetic field assembly 411 and the second magnetic field assembly 421 may be disposed in the middle layer of the barrel body 310. In other embodiments, the first magnetic field assembly 411 and the second magnetic field assembly 421 may also be disposed outside the inner barrel body of the barrel body 310.

[0066] The barrel body 310 may include an inner barrel body 318. The barrel body 310 may further be provided with a barrel shell 3101 on the outer side of the inner barrel body 318, and the shell 3101 serves as the outermost layer of the fresh-keeping storage container 30. In some embodiments, the barrel shell 3101 may not be provided outside a part of the side wall of the inner barrel body 318, and other insulation parts or injection molded parts or adjacent components in the refrigerator may be used as the outermost layer of the fresh-keeping storage container 30.

[0067] The inner barrel 318 can be formed by injection molding, and the inside is used to place drawers, or directly place stored items. In some embodiments, the inner barrel 318 can be a one-piece piece or formed by splicing multiple liner components by snap-fitting or other connection methods. For example, the inner barrel 318 can be split into three to four liner components according to the convenience of assembly.

[0068] There is an interlayer space 331 between the inner barrel body 318 and the barrel outer shell 3101, which can be used to form an air duct, a heat-insulating layer, and a space for arranging the magnetic field device 410. Alternatively, the magnetic field connector 431 can also be arranged on the outer side of the inner barrel body 318.

[0069] The first magnetic field component 411 and the second magnetic field component 421 may adopt a substantially identical structure. For example, the first magnetic field component 411 may include a first magnetic source sheet 414 and a first magnetic conductive plate 413; correspondingly, the second magnetic field component 421 may include a second magnetic source sheet 424 and a second magnetic conductive plate 423. In some embodiments, the first magnetic field component 411 may further include a first electromagnetic coil 415; and the second magnetic field component 421 may further include a second electromagnetic coil 425. The first magnetic source sheet 414 is attached to the central area of ​​the first magnetic conductive plate 413, and the second magnetic source sheet 424 is attached to the central area of ​​the second magnetic conductive plate 423.

[0070] The first magnetic source sheet 414 and the second magnetic source sheet 424 can be permanent magnetic sheets that are uniformly magnetized. Considering the coordination with the first magnetic conductive plate 413 and the second magnetic conductive plate 423, the permanent magnetic sheet can be made of a permanent magnetic material with a certain flexibility, for example, a rubber magnetic sheet with flexibility made by a calendering process of bonding ferrite magnetic powder and synthetic rubber. Alternatively, in some embodiments, the first magnetic source sheet 414 and the second magnetic source sheet 424 can be formed by electromagnetic coils.

[0071] The magnetization intensity of the first magnetic source sheet 414 and the second magnetic source sheet 424 is required to meet the above-mentioned effective magnetic field intensity range of 10GS-100GS (1-10mT) formed in the fresh-keeping storage space 330, and can be further set to 20-80GS, and the effective magnetic field spacing range is 60-240mm. The magnetic field directions of the first magnetic source sheet 414 and the second magnetic source sheet 424 are set to be perpendicular to their own surfaces respectively. The magnetic fields of the first magnetic source sheet 414 and the second magnetic source sheet 424 can be set to be in the same direction, that is, the opposite side of the first magnetic source sheet 414 and the second magnetic source sheet 424 are opposite magnetic poles, for example, the first magnetic source sheet 414 and the second magnetic source sheet 424 are both N poles on the upper surface and S poles on the lower surface.

[0072] The first magnetic conductive plate 413 and the second magnetic conductive plate 423 are made of materials with low coercive force and high magnetic permeability. The area of ​​the first magnetic conductive plate 413 can be slightly larger than the first magnetic source sheet 414, and the area of ​​the second magnetic conductive plate 423 can be slightly larger than the second magnetic source sheet 424. The first magnetic conductive plate 413 and the first magnetic source sheet 414 cooperate, and the second magnetic conductive plate 423 and the second magnetic source sheet 424 cooperate, which can achieve close fit and zero gap fit, thereby improving the uniformity of the magnetic field.

[0073] The first magnetic conductive plate 413 forms extensions 4131 on both sides of its central area; and the second magnetic conductive plate 423 forms extensions 4231 on both sides of its central area. That is, the first magnetic conductive plate 413 and the second magnetic conductive plate 423 are slightly larger than the first magnetic source sheet 414 and the second magnetic source sheet 424 at least in the lateral direction. In some embodiments, the first magnetic conductive plate 413 forms extensions 4131 around its central area, and the second magnetic conductive plate 423 forms extensions 4231 around its central area. That is, the first magnetic conductive plate 413 and the second magnetic conductive plate 423 are slightly larger than the first magnetic source sheet 414 and the second magnetic source sheet 424 as a whole. The extension parts 4131, 4231 are mainly used to achieve structural coordination with the magnetic field connector 431 and the barrel body 310. In order to make the areas of the first magnetic source piece 414 and the second magnetic source piece 424 as large as possible, the size of the extension parts 4131, 4231 is generally set to be smaller, for example, they can extend 3-20mm, such as 3mm, 5mm, 10mm, 20mm, and in particular can be set to 10mm.

[0074] In order to ensure that the magnetic source sheet provides a sufficient magnetic field, a magnetic conductive plate is used to achieve uniform distribution of the magnetic field. The area of ​​the area where the magnetic conductive plate and the magnetic source sheet are bonded is greater than or equal to 40% of the projection area of ​​the magnetic conductive plate on the plane where the magnetic source sheet is located. In other words, the ratio of the projection area of ​​the magnetic source sheet and the magnetic conductive plate on the plane where the planar area is located is required to be greater than 40%. In particular, the area of ​​the area where the magnetic conductive plate and the magnetic source sheet are bonded is greater than or equal to 90% of the projection area of ​​the magnetic conductive plate on the plane where the magnetic source sheet is located. In other words, the ratio of the projection area of ​​the magnetic source sheet and the magnetic conductive plate on the plane where the planar area is located is required to be greater than 90%. That is, by limiting the size of the extension parts 4131, 4231, the requirements of the magnetic field are guaranteed.

[0075] The magnetic field device 410 may further include at least one magnetic field connector 431. Each magnetic field connector 431 is disposed on a side wall connected to the side wall where the first magnetic field assembly 411 and the second magnetic field assembly 421 are located, and is magnetically connected to the first magnetic field assembly 411 and the second magnetic field assembly 421. The magnetic field connector 431 may be made of the same material as the first magnetic conductive plate 413 and the second magnetic conductive plate 423. There may be two or more magnetic field connectors 431, for example, the magnetic field connector 431 may be connected to the first magnetic field assembly 411 and the second magnetic field assembly 421 from one or more directions around the first magnetic field assembly 411 and the second magnetic field assembly 421.

[0076] The magnetic field connector 431 may be disposed in the interlayer of the side wall, or on the outside of the inner barrel 318. For example, when the first magnetic field assembly 411 and the second magnetic field assembly 421 may be disposed in the barrel top wall 311 and the barrel bottom wall 312, respectively, the magnetic field connector 431 may be disposed on the barrel left side wall 314 and the barrel right side wall 315; or the magnetic field connector 431 may be disposed on any one or more of the barrel left side wall 314, the barrel right side wall 315, the barrel rear wall, and the barrel front wall (when the barrel 310 has a side wall on the front side). One or more magnetic field connectors 431 may be disposed on one side wall.

[0077] For another example, when the first magnetic field component 411 and the second magnetic field component 421 can be respectively arranged on the left side wall 314 and the right side wall 315 of the barrel body, the magnetic field connector can be arranged on the top wall 311 and the bottom wall 312 of the barrel body; or the magnetic field connector 431 can be arranged on the top wall 311, the bottom wall 312, the rear wall and the front wall of the barrel body (when the barrel body 310 has a side wall on the front side). One or more magnetic field connectors 431 can be arranged on one side wall. In other words, the magnetic field preservation storage container 30 can be provided with multiple magnetic field connectors 431 on both sides, and the magnetic field connectors 431 on each side are arranged at intervals, providing multiple magnetic connection paths for the first magnetic field component 411 and the second magnetic field component 421.

[0078] The size of the contact area between each magnetic field connector 431 and the extension 4131, 4231 along the extension direction of the magnetic field connector 431 is set to be greater than or equal to 1mm and less than or equal to 10mm. That is, when the magnetic field connector 431 is arranged on both sides of the barrel 310, the lateral distance between the contact area between the magnetic field connector 431 and the extension 4131, 4231 is greater than or equal to 1mm and less than or equal to 10mm, which can ensure that the magnetic field connector 431 provides a reliable magnetic connection path for the first magnetic field assembly 411 and the second magnetic field assembly 421.

[0079] Each magnetic field connector 431 can be arranged in a direction perpendicular to the corresponding side. That is, the magnetic field connector 431 provides the shortest magnetic connection path connecting the first magnetic field component 411 and the second magnetic field component 421. In some embodiments, the magnetic field connector 431 can have a consistent width from the end connected to the first magnetic field component 411 to the end connected to the second magnetic field component 421, that is, the magnetic field connector 431 has a uniform width as a whole. In addition, the ratio of the width of each magnetic field connector 431 to the corresponding side length of the first magnetic field component 411 or the second magnetic field component 421 is set to be greater than or equal to 1% and less than or equal to 50%. The width must be greater than or equal to 1% of the side length of the magnetic field component and less than or equal to 50% of the side length of the magnetic field component. For example, the above ratio can be set to 1%, 5%, 10%, 20%, 30%, 40%, 50%. Further, the width can be set to be greater than or equal to 5% of the side length of the first magnetic field component 411 or the second magnetic field component 421 to which it is connected, and less than or equal to 30%. That is, the width of the magnetic field connector 431 needs to be greater than or equal to 5% of the length of the side of the magnetic field assembly and less than or equal to 30% of the length of the side of the magnetic field assembly. For example, it can be set to 5%, 10%, 15%, 20%, 25%, 30%, etc.

[0080] In some embodiments, each magnetic field connector 431 includes a main body plate 4312 and flanges 4311 extending from both ends of the main body plate 4312. The main body plates 4312 of the two magnetic field connectors 431 are respectively disposed in another set of opposite side walls of the barrel body 310, and are connected to the first magnetic field assembly 411 and the second magnetic field assembly 421 through the flanges 4311. For example, in the case where the first magnetic field assembly 411 and the second magnetic field assembly 421 can be respectively disposed in the barrel body top wall 311 and the barrel body bottom wall 312, the main body plates 4312 of the two magnetic field connectors 431 can be disposed in the barrel body left side wall 314 and the barrel body right side wall 315; the flanges 4311 are disposed at the top or bottom of the main body plate 4312. For another example, when the first magnetic field component 411 and the second magnetic field component 421 can be respectively arranged in the left side wall 314 and the right side wall 315 of the barrel body, the main plate 4312 of the two magnetic field connectors 431 can be arranged in the top wall 311 and the bottom wall 312 of the barrel body; the flange is arranged at the left end or the right end of the main plate 4312.

[0081] The flange 4311 of the magnetic field connector 431 is respectively connected to the extensions 4131 and 4231 of the first magnetic conductive plate 413 and the second magnetic conductive plate 423. In order to avoid affecting the distribution of the magnetic field, the ends of the flange 4311 of the magnetic field connector 431 are required to have a certain gap with the edges of the first magnetic source sheet 414 and the second magnetic source sheet 424 to form a magnetic gap. The magnetic field connector 431 will not affect the magnetic field distribution of the first magnetic source sheet 414 and the second magnetic source sheet 424.

[0082] In some embodiments, the magnetic source sheet is attached to the side of the magnetic conductive plate close to the fresh-keeping storage space, and the flange 4311 of the magnetic field connector 431 uses the side away from the fresh-keeping storage space 330 to contact the side of the extension 4131 and 4231 close to the fresh-keeping storage space 330. For example, the first magnetic source sheet 414 can be attached to the lower surface of the first magnetic conductive plate 413, and the top flange 4311 of the magnetic field connector 431 uses the upper surface to abut the lower surface of the extension 4131 of the first magnetic conductive plate 413; and the second magnetic source sheet 424 can be attached to the upper surface of the second magnetic conductive plate 423, and the bottom flange 4311 of the magnetic field connector 431 uses the lower surface to abut the upper surface of the extension 4231 of the second magnetic conductive plate 423. Such an abutting structure can make the structure of the magnetic field device 410 more compact and the magnetic circuit smoother.

[0083] The size L1 of the contact area between the flange 4311 and the extension 4131, 4231 along the extension direction of the flange 4311 ranges from 1 to 10 mm. For the magnetic circuit, theoretically, the larger the contact area between the flange 4311 and the extension 4131, 4231, the more conducive to the conduction of the magnetic circuit, but as the contact area increases, the beneficial effect on the magnetic circuit will gradually decrease, and it will take up more space.

[0084] During the research and development process, the inventor conducted a lot of analysis on the contact area between the flange 4311 and the extension parts 4131, 4231. The analysis results are as follows: using a magnetic field connector 431 with a thickness of 1 mm and a width of 100 mm and a magnetic source sheet of set specifications, the dimensions L1 of the extension parts 4131, 4231 in the extension direction of the flange 4311 are 0 mm (the flange 4311 contacts the ends of the extension parts 4131, 4231 without overlapping), 1 mm, 3 mm, 6 mm, 7 mm, 9 mm, 10 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 31 The magnetic field density at the center point varies with different working conditions. In order to compare the distribution of the magnetic field uniform area under different working conditions, the magnetic field intensity at the center point of the fresh-keeping storage space 330 with a uniformity better than 10% under the above-mentioned different contact areas are 42Gs, 43Gs, 46Gs, 47.8Gs, 48.9Gs, 49.5Gs, 50.0Gs and 49.5Gs respectively. Figure 4 It is the analysis result of the magnetic field strength at the center point under different contact area sizes between the magnetic field connector 431 and the magnetic conductive plate in the magnetic field fresh-keeping storage container 30 of one embodiment of the present invention.

[0085] It can be seen from the above analysis that in the initial stage, the magnetic field increases rapidly with the size L1. After reaching a certain value, the effect of the magnetic field increasing with the size L1 gradually decreases. Based on the above analysis, the scheme of this embodiment can set the size L1 to a range of 1 to 10 mm, and in particular, it can be set to 3-8 mm, such as 3 mm, 5 mm, 6 mm, 8 mm, and in particular 6 mm. It not only meets the needs of magnetic field strength, but also minimizes space occupancy. There is a gap L2 between the end of the flange 4311 and the magnetic source sheet. By using the gap L2, the magnetic source sheet and the flange 4311 can have a magnetic gap, so as to avoid the magnetic field connector 431 changing the magnetic field distribution of the magnetic source sheet itself, and ensure the uniformity of the magnetic field distribution in the fresh-keeping storage space 330.

[0086] Figure 5 is a schematic diagram of a magnetic field device 410 in a magnetic field fresh-keeping storage container 30 according to an embodiment of the present invention, Figure 6 yes Figure 5 An exploded view of the components of magnetic field device 410 is shown.

[0087] The first magnetic field component 411 and the second magnetic field component 421 are arranged opposite to each other and adopt a basically the same structure. The first magnetic field component 411 may include a first magnetic source sheet 414, a first magnetic conductive plate 413, and a first electromagnetic coil 415, and the second magnetic field component 421 may include a second magnetic source sheet 424, a second magnetic conductive plate 423, and a second electromagnetic coil 425. The area where the first magnetic conductive plate 413 contacts the first magnetic source sheet 414 and the surface of the first magnetic source sheet 414 are configured to have a flatness that meets the requirements; the area where the second magnetic conductive plate 423 contacts the second magnetic source sheet 424 and the surface of the second magnetic source sheet 424 are configured to have a flatness that meets the requirements. After testing, the first magnetic conductive plate 413 can adjust the magnetic field distribution of the first magnetic source sheet 414, and the second magnetic conductive plate 423 can adjust the magnetic field distribution of the second magnetic source sheet 424, so as to make the magnetic field more uniform and expand the coverage of the magnetic field.

[0088] Figure 7It is a schematic diagram and a partial enlarged diagram of the cooperation between the first magnetic conductive plate 413 and the first magnetic source sheet 414 in the magnetic field preservation storage container 30 according to an embodiment of the present invention. The first magnetic conductive plate 413 extends outward around the plane area corresponding to the first magnetic source sheet 414 to form an extension portion 4131. The extension portion 4131 and the plane area (or referred to as the plane main body) where the first magnetic conductive plate 413 and the first magnetic source sheet 414 abut against each other form a step surface. In other words, the edges of the first magnetic conductive plate 413 protrude toward one side of the first magnetic source sheet 414. The first magnetic source sheet 414 fits in the central area defined by the protruding extension portion 4131. The extension portion 4131 protrudes toward one side of the first magnetic source sheet 414, and is used to cooperate with the barrel body and / or the magnetic field connector 431 as a connecting component of the first magnetic conductive plate 413. There is a certain distance D (e.g., 1-3 mm) between the outer periphery of the first magnetic source sheet 414 and the step surface of the extension portion 4131, that is, the first magnetic source sheet 414 is only attached to the first magnetic conductive plate 413 through one side surface, and the outer periphery is not in contact with the first magnetic conductive plate 413, forming a magnetic gap. This ensures that the magnetic field of the first magnetic source sheet 414 can affect the fresh-keeping storage space 330 as evenly as possible, and will not be distorted at the edge due to the first magnetic conductive plate 413.

[0089] The protruding height of the extension portion 4131 may be greater than the thickness of the first magnetic source sheet 414. For example, in a specific embodiment, when the thickness of the first magnetic source sheet 414 is 3 mm, the protruding height of the extension portion 4131 may be approximately 3 mm. That is, after the first magnetic source sheet 414 is assembled on the first magnetic conductive plate 413, the bottom surface of the first magnetic field assembly 411 is substantially flush. The bottom surface of the first magnetic field assembly 411 may form a certain air gap with the top surface of the relative inner liner. By utilizing this air gap, the coldness of the refrigeration airflow may be prevented from being directly transferred to the fresh-keeping storage space 330. In other words, an air gap is formed between the first magnetic field assembly 411 and the inner liner to prevent excessive heat transfer on the top surface of the barrel body.

[0090] In order to reduce the weight of the magnetic field storage container and save the occupied space, the thickness of the first magnetic conductive plate 413 is required to be as thin as possible, but considering that the first magnetic conductive plate 413 is required to achieve a uniform distribution of the magnetic field, the thickness of the first magnetic conductive plate 413 and the second magnetic conductive plate 423 can be configured to be no more than 3mm, that is, less than or equal to 3mm, for example, the thickness can be 1mm. The thickness of the first magnetic source sheet 414 and the second magnetic source sheet 424 can be no more than 8mm, that is, less than or equal to 8mm, for example, a magnetic source sheet with a thickness of 3mm, 4mm, or 5mm is used.

[0091] The second magnetic field component 421 is substantially the same in structure as the first magnetic field component 411, that is, the second magnetic conductive plate 423 is substantially the same in shape, structure, and parameters as the first magnetic conductive plate 413, and the second magnetic source sheet 424 is substantially the same in shape, structure, and parameters as the first magnetic source sheet 414. In some embodiments, the second magnetic field component 421 is substantially opposite to the first magnetic field component 411, and a small offset may exist therebetween, taking into account the structure and size of the opposite sides of the magnetic field preservation storage container 30. That is, the projection surfaces of the second magnetic field component 421 and the first magnetic field component 411 are not required to completely overlap. For example, in some embodiments, the bottom surface area of ​​the magnetic field preservation storage container 30 is slightly larger than the top surface area, and the size of the second magnetic field component 421 may also be slightly larger than the first magnetic field component 411.

[0092] The first magnetic field component 411 and the second magnetic field component 421 can respectively cover the corresponding side surfaces of the fresh-keeping storage space 330. In the embodiment where the first magnetic field component 411 and the second magnetic field component 421 are respectively arranged on the top surface and the bottom surface of the magnetic field fresh-keeping storage container 30, the first magnetic field component 411 can cover the top surface of the fresh-keeping storage space 330, and the second magnetic field component 421 can cover the bottom surface of the fresh-keeping storage space 330. The magnetic field directions of the first magnetic source sheet 414 and the second magnetic source sheet 424 can be set to be the same, that is, the relative magnetic poles of the first magnetic source sheet 414 and the second magnetic source sheet 424 are opposite magnetic poles, which can further ensure the uniformity of the magnetic field.

[0093] The magnetic field connector 431 connects the first magnetic field component 411 and the second magnetic field component 421 from both sides. The magnetic field connector 431 is arranged on the left side and the right side of the magnetic field preservation storage container 30, respectively, and its top flange 4311 is connected to the first magnetic field component 411, and its bottom flange 4311 is connected to the second magnetic field component 421. The first magnetic field component 411, the second magnetic field component 421 and the magnetic field connectors 431 on both sides form an outer magnetic conductive path surrounding the magnetic field preservation storage container 30, and the fresh-keeping storage space 330 between the first magnetic field component 411 and the second magnetic field component 421 forms an internal magnetic field. The outer magnetic conductive path provides a closed path for the magnetic field lines for the internal magnetic field, so that the magnetic field can be gathered, the uniformity of the internal magnetic field can be improved, and at the same time, the magnetic field can be reduced. Release to the outside of the magnetic field preservation storage container 30 can be reduced, reducing interference with other external components (for example, avoiding magnetization of other components, etc.).

[0094] The magnetic field connector 431 is required to be able to meet the requirements of the aggregated external magnetic field. Generally speaking, the magnetic field connector 431 is connected to the central position of the first magnetic field component 411 and the second magnetic field component 421. The magnetic field connector 431 on each side can be one or more. The accompanying drawings show an embodiment in which a magnetic field connector 431 is arranged in the center of the front and rear positions of the first magnetic field component 411 and the second magnetic field component 421. Alternatively, multiple magnetic field connectors 431 can be arranged at intervals along the front and rear direction of the magnetic field preservation container.

[0095] Figure 8 The figure is a matching structure of a magnetic field connector 431 and a first magnetic conductive plate 413 in a magnetic field fresh-keeping storage container 30 according to an embodiment of the present invention and a partial enlarged diagram thereof. When the first magnetic conductive plate 413 is connected to the magnetic field connector 431, the extension 4131 may not protrude, forming a clearance gap 4132. That is, at the position of the clearance gap 4132, the extension 4131 is flush with the main body of the central area of ​​the first magnetic conductive plate 413, or the protrusion height is less than other positions of the extension 4131. The magnetic field connector 431 forms a flange 4311 at the top facing the first magnetic conductive plate 413, and the flange 4311 is used to reliably contact the gap 4132 of the first magnetic conductive plate 413 to form a reliable magnetic connection. A flange fixing hole 4313 is provided on the flange 4311, which can be firmly connected to the first magnetic conductive plate 413 and the barrel body 310 by means of screw holes and the like. The flange 4311 of the magnetic field connector 431 is also required to have a certain gap from the side of the first magnetic source sheet 414 to form a magnetic gap. By using the above gap, after the magnetic field connector 431 is connected to the first magnetic conductive plate 413, the magnetic field connector 431 does not affect the connection between the first magnetic conductive plate 413 and the barrel 310 in the thickness direction. Similarly, the lower end of the magnetic field connector 431 can also be connected to the second magnetic conductive plate 423 using a similar connection result.

[0096] In some embodiments of the present embodiment, in order to improve the magnetic field strength, the first magnetic field component 411 and the second magnetic field component 421 may further be provided with electromagnetic coils 415 and 425, and the electromagnetic coils 415 and 425 are respectively located on the inner side of the first magnetic source sheet 414 and the second magnetic source sheet 424. The electromagnetic coils 415 and 425 may be wound into a flat ring shape by copper wire, and the number of turns of the copper wire may be set according to the magnetic field requirements and the structural dimensions. In some embodiments, the first electromagnetic coil 415 and the second electromagnetic coil 425 may be respectively located at the central position of the first magnetic source sheet 414 and the second magnetic source sheet 424, and the magnetic pole direction of the magnetic field formed after power-on is consistent with the first magnetic source sheet 414 and the second magnetic source sheet 424 that are adjacent.

[0097] Fig. 9It is a schematic diagram of the connection position between the magnetic field connector 431 and the magnetic conductive plate in the magnetic field fresh-keeping storage container 30 according to another embodiment of the present invention. The magnetic field connector 431 can also be connected to the front end or rear end of both sides of the magnetic conductive plate. Fig.10 It is a schematic diagram of the connection position of the magnetic field connector 431 and the magnetic conductive plate in the magnetic field preservation storage container 30 according to another embodiment of the present invention. The magnetic field connector 431 can also be connected to the position near the front end or rear end on both sides of the magnetic conductive plates 413, 423, for example, it is set at a quarter of the front and back position. This may cause certain instability to the magnetic field, but when necessary, it can provide structural concessions for the barrel 310. In some embodiments, the magnetic field connectors 431 on both sides can also be staggered in the front and back directions, for example, the left magnetic field connector 431 is connected to the front end of the magnetic conductive plates 413, 423, and the right magnetic field connector 431 is connected to the rear end of the magnetic conductive plates 413, 423; for example, the left magnetic field connector 431 is connected to a quarter of the position of the magnetic conductive plates 413, 423, and the right magnetic field connector 431 is connected to the three quarters of the position of the magnetic conductive plates 413, 423. Those skilled in the art can select the position of the magnetic field connector 431 according to the structural requirements. Generally, the magnetic field connector 431 is disposed in the middle of the barrel 310 and connected to the middle of the magnetic conductive plates 413 and 423 .

[0098] Fig.11 Schematic diagram of the connection position of the magnetic field connector 431 and the magnetic conductive plate in the magnetic field preservation storage container 30 according to another embodiment of the present invention. The magnetic field connector 431 is respectively arranged on the left side, right side and rear side of the first magnetic field component 411 and the second magnetic field component 421, that is, the first magnetic field component 411 and the second magnetic field component 421 are magnetically connected on three sides by the magnetic field connector 431. The magnetic field connector 431 can be arranged in the middle of each side. On this basis, the art can realize a solution of arranging multiple magnetic field connectors 431 at intervals on each side.

[0099] When the magnetic field connectors 431 are respectively provided on the left side, right side and rear side of the first magnetic field component 411 and the second magnetic field component 421, the magnetic field connectors 431 are not limited to being connected to the middle of the corresponding sides, but can also be provided at a connection position deviating from the middle and close to one of the sides.

[0100] Fig.12Schematic diagram of the connection between the magnetic field connector 431 and the magnetic conductive plate in the magnetic field fresh-keeping storage container 30 according to another embodiment of the present invention. The flange 4311 of the magnetic field connector 431 uses the side facing the inside of the fresh-keeping storage space 330 to abut against the extension 4131, and 4231 is away from the side of the inside of the fresh-keeping storage space 330. For example, the first magnetic source sheet 414 can be attached to the lower surface of the first magnetic conductive plate 413, and the top flange 4311 of the magnetic field connector 431 uses the lower surface to abut against the upper surface of the extension 4131 of the first magnetic conductive plate 413; and the second magnetic source sheet 424 can be attached to the upper surface of the second magnetic conductive plate 423, and the bottom flange 4311 of the magnetic field connector 431 uses the upper surface to abut against the lower surface of the extension 4231 of the second magnetic conductive plate 423.

[0101] Fig.13 Schematic diagram of the connection between the magnetic field connector 431 and the magnetic conductive plate in the magnetic field fresh-keeping storage container 30 according to another embodiment of the present invention. The flange 4311 of the magnetic field connector 431 uses the end to abut the end of the extension 4131, that is, the magnetic field connector 431 and the first magnetic conductive plate 413 and the second magnetic conductive plate 423 do not have a longitudinally overlapping area, and the ends abut against each other.

[0102] Fig.14 Schematic diagram of the connection between the magnetic field connector 431 and the magnetic conductive plate in the magnetic field fresh-keeping storage container 30 according to another embodiment of the present invention. The magnetic field connector 431 is not provided with a flange 4311 and is in the shape of a plate. The first magnetic conductive plate 413 and the second magnetic conductive plate 423 extend to both sides until they abut against the inner side of the magnetic field connector 431. Fig.13 and Fig.14 The illustrated embodiment places higher requirements on the connection process between the magnetic field connector 431 and the magnetic conductive plate.

[0103] Fig.15 Schematic diagram of the fixing method of the magnetic field connector 431 and the magnetic conductive plate in the magnetic field preservation storage container 30 according to one embodiment of the present invention. The connection positions of the flange 4311 of the magnetic field connector 431 and the first magnetic conductive plate 413 and the second magnetic conductive plate 423 are fixed respectively using fasteners 4133 (screws, etc.).

[0104] Fig.16 Schematic diagram of a method for fixing a magnetic field connector 431 and a magnetic conductive plate in a magnetic field fresh-keeping storage container 30 according to another embodiment of the present invention. The connection positions of the flange 4311 of the magnetic field connector 431 and the first magnetic conductive plate 413 and the second magnetic conductive plate 423 are fixed at the fixing position 4134 by gluing or welding.

[0105] Those skilled in the art can flexibly select the desired connection method and fixing method according to the technical process requirements, and the connection method and fixing method provided in the above embodiments can be flexibly combined.

[0106] In one embodiment, the size parameters of the first magnetic source sheet 414 and the second magnetic source sheet 424 can be: about 400mm in length, about 330mm in width, and about 3mm in thickness; the size parameters of the first magnetic conductive plate 413 and the second magnetic conductive plate 423 can be: about 1mm in thickness, and about 10mm in extension length; the size parameters of the connecting member 431 can be: about 1mm in thickness, about 100mm in width, and about 16mm in extension length of the flange 4311. The overlapping size of the flange 4311 of the connecting member 431 and the extension 4131, 4231 of the magnetic conductive plate is about 6mm.

[0107] Fig.17 is a front view of a magnetic field fresh-keeping storage container according to an embodiment of the present invention; Fig.18 is a schematic diagram of a magnetic field fresh-keeping storage container from another angle according to an embodiment of the present invention; Fig.19 yes Fig.17 The cross-sectional view of the magnetic field fresh-keeping storage container along the AA direction is shown.

[0108] The magnetic field fresh-keeping storage container 30 is a drawer-type structure. The barrel body 310 is box-shaped as a whole and has a forward opening. The drawer 320 is arranged inside the barrel body 310 through the forward opening. The drawer end plate assembly 321 of the drawer 320 can seal the forward opening of the barrel body 310 when the drawer 320 is placed in the barrel body 310, so that a closed storage environment is formed inside the barrel body 310, so that the drawer 320 and the barrel body 310 jointly define a fresh-keeping storage space 330. When the drawer 320 is pulled out of the barrel body 310, the drawer 320 reveals the space at the top, which can be used to take out and put the stored objects.

[0109] The barrel body air supply port 316 connected to the fresh-keeping container air supply channel is provided at the rear of the barrel body top wall 311 near the barrel body rear wall 313. The fresh-keeping container air supply channel can be an air duct specially used to provide cooling airflow for the fresh-keeping storage container 30. The barrel body top wall 311 where the barrel body air supply port 316 is located can be set to have a certain inclination angle so as to cooperate with the fresh-keeping container air supply channel. The barrel body return air port 317 is set on one side of the barrel body air supply port 316 and is spaced apart from the barrel body air supply port 316.

[0110] Another necessary condition for the magnetic field fresh-keeping storage container 30 to achieve long-term fresh-keeping storage is to maintain the temperature in the fresh-keeping storage space 330 within the set fresh-keeping temperature range, and the refrigeration process will not be too low or too high, especially the temperature of each area of ​​the fresh-keeping storage space 330 is uniform. In some embodiments, the fresh-keeping temperature range can be set at -2°C to 1°C, for example, it can be set to -2°C to 0°C. The stored objects can avoid being frozen and maintain the most suitable fresh-keeping temperature. Those skilled in the art can set the fresh-keeping temperature range according to the specific state of the stored objects, and the above specific numerical range is only for example. The refrigeration airflow is in direct contact with the stored objects, which will obviously cause the stored objects to be overcooled and frozen or tissue damaged, affecting the fresh-keeping storage effect. In addition, the refrigeration airflow cannot flow evenly through the entire storage space, which will cause the temperature of the fresh-keeping storage space 330 to be uneven, and will also cause the fresh-keeping storage effect to decrease. The magnetic field fresh-keeping storage container 30 of this embodiment optimizes the internal wind path structure to prevent the refrigeration airflow from entering the fresh-keeping storage space 330 and contacting the stored objects, thereby ensuring that the temperature inside the fresh-keeping storage space 330 is stable and uniform.

[0111] Fig.19 The direction of the arrow in is the internal airflow direction of the magnetic field preservation storage container 30. The air path inside the magnetic field preservation storage container 30 is configured as follows: the airflow enters the rear end of the air supply section 341 (also referred to as the top air path section) of the internal air path of the magnetic field preservation storage container 30 defined in the top wall of the barrel body from the barrel body air supply port 316, and then the airflow flows through the air supply section 341 from back to front. At the front end of the air supply section 341, the airflow enters the top of the wind section (also referred to as the end plate wind path section) of the internal wind path of the magnetic field preservation storage container 30 defined in the drawer end plate assembly 321, and then the airflow flows from top to bottom through the wind section 342. At the bottom end of the wind section 342, the airflow enters the gap between the drawer bottom plate 322 and the barrel body bottom wall 312, which serves as the cold transmission section (also referred to as the bottom wall wind path section) of the internal wind path of the magnetic field preservation storage container 30, and then the airflow flows from front to back through the first cold transmission section 343. At the connection position between the rear end of the drawer bottom plate 322 and the drawer rear plate 323 (i.e., the rear end of the cold transmission section 343), the airflow enters the gap between the drawer rear plate 322 and the barrel body rear wall 313, which can be used as the barrel inner return air section 344 (also called the rear wall air path section). The middle of the barrel body rear wall 313 is provided with an inner barrel body return air port 346, and the barrel body rear wall is provided with an inter-barrel return air section 345 from the inner barrel body return air port 346 to the barrel body return air port 317. The airflow finally reaches the barrel body return air port 317 from the inner barrel body return air port 346 via the inter-barrel return air section 345.

[0112] The internal air path of the magnetic field fresh-keeping storage container 30 surrounds the entire magnetic field fresh-keeping storage container 30. Without entering the fresh-keeping storage space 330 and thus without directly contacting the stored objects, sufficient heat exchange can be achieved to evenly cool the magnetic field fresh-keeping storage container 30.

[0113] In addition, the internal air path of the magnetic field fresh-keeping storage container 30 is also compatible with the temperature characteristics of the refrigeration airflow. During the flow process, the refrigeration airflow gradually exchanges heat, and its own temperature gradually increases. The airflow temperature of the air supply section 341 is the lowest, and the air supply section 341 is formed inside the interlayer of the barrel top wall 311, and the cold energy is conducted downward from the barrel top wall 311. The distance between the stored objects and the barrel top wall 311 is relatively far, and the heat transfer efficiency is the worst. In the wind section 342, the heat transfer efficiency of the drawer end plate assembly 321 is also weaker than that of the drawer bottom plate 322. The gap between the drawer bottom plate 322 and the barrel bottom wall 312 is used as the cold transfer section 343, and the cold energy exchanges heat with the drawer bottom plate 322, and its heat exchange efficiency is the highest. In other words, as the air flow temperature increases, the heat exchange efficiency of each air path section is relatively improved, which makes the temperature of each position of the fresh-keeping storage space 330 roughly equivalent. The solution of this embodiment realizes an independent surrounding air supply mode in the sealed magnetic field fresh-keeping storage container 30, thereby ensuring the temperature conditions required for fresh-keeping storage.

[0114] The air path inside the magnetic field fresh-keeping storage container 30 is configured as follows: the airflow enters the rear end of the air supply section 341 (also referred to as the air supply section) of the internal air path of the magnetic field fresh-keeping storage container 30 defined in the top wall of the barrel body from the barrel body air supply port 316, and then the airflow flows through the air supply section 341 from back to front. At the front end of the air supply section 341, the airflow enters the top of the wind section (also referred to as the end plate wind section) of the internal wind path of the magnetic field fresh-keeping storage container 30 defined in the drawer end plate assembly 321, and then the airflow flows from top to bottom through the wind section 342. At the bottom end of the wind section 342, the airflow enters the gap between the drawer bottom plate 322 and the barrel body bottom wall 312, which serves as the cold transmission section (also referred to as the bottom wall wind section) of the internal wind path of the magnetic field fresh-keeping storage container 30, and then the airflow flows from front to back through the first cold transmission section 343. At the connection position between the rear end of the drawer bottom plate 322 and the drawer rear plate 323 (i.e., the rear end of the cold transmission section 343), the airflow enters the gap between the drawer rear plate 322 and the barrel body rear wall 313, which can be used as the barrel inner return air section 344 (also called the rear wall air path section). The middle of the barrel body rear wall 313 is provided with an inner barrel body return air port 346, and the barrel body rear wall is provided with an inter-barrel return air section 345 from the inner barrel body return air port 346 to the barrel body return air port 317. The airflow finally reaches the barrel body return air port 317 from the inner barrel body return air port 346 via the inter-barrel return air section 345.

[0115] The internal air path of the magnetic field fresh-keeping storage container 30 surrounds the entire magnetic field fresh-keeping storage container 30. Without entering the fresh-keeping storage space 330 and thus without directly contacting the stored objects, sufficient heat exchange can be achieved to evenly cool the magnetic field fresh-keeping storage container 30.

[0116] Fig. 20 is a schematic diagram of a refrigerator 10 according to an embodiment of the present invention; Fig.21 yes Fig. 20 The refrigerator 10 shown is a schematic diagram after the upper door 11 is hidden. The refrigerator of this embodiment generally includes a box body 12, a door body 11, and a refrigeration system (not shown in the figure). The box body 12 may define at least one storage compartment with an open front side, usually multiple, such as a refrigerated storage compartment 121, a frozen storage compartment, a variable temperature storage compartment, etc. The number and function of the specific storage compartments can be configured according to pre-determined requirements. Fig. 20 and Fig.21 The cross-door refrigerator shown is only an example, and those skilled in the art can configure the specific number, function and layout of the storage compartments according to needs.

[0117] The refrigerator 10 of this embodiment can be an air-cooled refrigerator. An air duct system is provided in the box body, and a fan is used to send the refrigeration air that has exchanged heat with the heat exchanger (evaporator, not shown in the figure) to the storage room through the air supply port, and then return to the air duct through the return air port to achieve refrigeration. Multiple storage rooms can be spatially divided by racks, shelves, drawers, etc. to achieve corresponding storage functions, such as chilled, frozen, dry storage, etc.

[0118] One or more magnetic field preservation storage containers 30 may be arranged in the refrigerator 10 of this embodiment. In some optional embodiments, the magnetic field preservation storage container 30 may be arranged in one or more of the above-mentioned multiple storage compartments, and through magnetic field and temperature control, long-term high-quality cold preservation of food materials such as meat and fish can be achieved. For example, the magnetic field preservation storage container 30 may be arranged in the refrigerated storage compartment 121, and in addition to the magnetic field preservation storage container 30, other drawer-type storage containers 122 may also be arranged in the refrigerated storage compartment 121, such as Fig.21 In addition to the magnetic field preservation storage container 30 , the refrigerated storage compartment 121 is also provided with three other drawer-type storage containers 122 , one of which is arranged in parallel with the magnetic field preservation storage container 30 .

[0119] The refrigerator 10 of this embodiment achieves the effect of fresh-keeping storage by combining the precise temperature control of the magnetic field fresh-keeping storage container 30 with the influence of the magnetic field. In order to achieve precise temperature control, the air duct system of the refrigerator of this embodiment can provide a special fresh-keeping container air supply channel for the magnetic field fresh-keeping storage container 30 to achieve the control of the on-off and / or size of the refrigeration airflow of the magnetic field fresh-keeping storage container 30. Through actual testing of trial samples, the use of the fresh-keeping storage container 30 and the refrigerator of the scheme of this embodiment can greatly extend the fresh-keeping storage time of the stored objects. For example, for fresh meat and fish, the fresh-keeping time can be extended to 5 to 7 days, which greatly improves the user experience.

[0120] 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 based on the content 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 these other variations or modifications.

Claims

1. A magnetic field fresh-keeping storage container, comprising: The barrel body has a fresh-keeping storage space for storing stored items; The first magnetic field assembly and the second magnetic field assembly are respectively arranged on a set of opposite side walls of the barrel body and configured to form a magnetic field in the fresh-keeping storage space, the first magnetic field assembly and the second magnetic field assembly respectively include a magnetic source sheet and a magnetic conductive plate, the magnetic source sheet is attached to the central area of ​​the magnetic conductive plate, and the magnetic conductive plate forms an extension on both sides of the central area; At least one magnetic field connector, each of which is arranged on a side wall connected to the side wall where the first magnetic field component and the second magnetic field component are located, and is connected to the extension portion, so as to achieve magnetic connection with the first magnetic field component and the second magnetic field component.

2. The magnetic field fresh-keeping storage container according to claim 1, wherein A size of a contact area between each of the magnetic field connecting members and the extension portion along an extension direction of the magnetic field connecting member is set to be greater than or equal to 1 mm and less than or equal to 10 mm.

3. The magnetic field fresh-keeping storage container according to claim 1, wherein At least a portion of the outer extension protrudes toward the interior of the fresh-keeping storage space relative to the central area, so that the central area and at least a portion of the outer extension form a step; The magnetic source piece and the step have a set distance.

4. The magnetic field fresh-keeping storage container according to claim 3, wherein The central section of the extension is flush with the central area, thereby forming a clearance gap relative to the protruding section; the magnetic field connection element is connected to the clearance gap section of the extension.

5. The magnetic field fresh-keeping storage container according to claim 1, wherein The magnetic field connecting members are respectively arranged on another set of opposite side walls of the barrel body, and Each of the side walls is provided with a magnetic field connecting member, and the magnetic field connecting member is connected to the middle of the side of the first magnetic field component and the second magnetic field component; or A plurality of magnetic field connecting members are disposed on each of the side walls, and the plurality of magnetic field connecting members are respectively disposed at intervals along the extension direction of the corresponding side edges.

6. The magnetic field fresh-keeping storage container according to claim 1, wherein Each of the magnetic field connectors is provided with flanges at both ends extending toward the magnetic conductive plates of the first magnetic field component and the second magnetic field component, one side of the flange is abutted against the extension, and there is a gap between the end of the flange and the magnetic source sheet.

7. The magnetic field fresh-keeping storage container according to claim 5, wherein The magnetic source sheet is attached to the side of the magnetic conductive plate close to the interior of the fresh-keeping storage space, and The flange of the magnetic field connector utilizes the side away from the interior of the fresh-keeping storage space to abut against the side of the extension portion close to the interior of the fresh-keeping storage space.

8. The magnetic field fresh-keeping storage container according to claim 1, wherein The magnetic source sheet is a permanent magnetic sheet with uniform magnetization; the effective magnetic field strength range of the magnetic field is 10-100GS, and the effective spacing range is 60-240mm.

9. The magnetic field fresh-keeping storage container according to claim 1, wherein The first magnetic field assembly and the second magnetic field assembly further include electromagnetic coils respectively, and the electromagnetic coils are arranged on a side of the magnetic source sheet opposite to the magnetic conductive plate.

10. The magnetic field fresh-keeping storage container according to claim 1, wherein: The barrel comprises: An inner barrel body, which defines the fresh-keeping storage space; The first magnetic field component is disposed above the top wall of the inner barrel body, and the second magnetic field component is disposed below the bottom wall of the inner barrel body; and There are two magnetic field connecting members, and the two magnetic field connecting members are respectively arranged on the outer sides of the side walls on both sides of the inner barrel body.

11. The magnetic field fresh-keeping storage container according to claim 1, wherein: The area of ​​the bonding region between the magnetic conductive plate and the magnetic source sheet is greater than or equal to 40% of the projection area of ​​the magnetic conductive plate on the plane where the magnetic source sheet is located.

12. The magnetic field fresh-keeping storage container according to claim 10, wherein: The area of ​​the bonding region between the magnetic conductive plate and the magnetic source sheet is greater than or equal to 90% of the projection area of ​​the magnetic conductive plate on the plane where the magnetic source sheet is located.

13. A refrigerator, comprising: A magnetic field fresh-keeping storage container according to any one of claims 1 to 11.

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