Fresh-keeping storage container and refrigerator with same

Abstract

The invention provides a fresh-keeping storage container and a refrigerator with the fresh-keeping storage container, a fresh-keeping storage space is defined in the fresh-keeping storage container, and the fresh-keeping storage container comprises a drawer. The drawer is arranged in the fresh-keeping storage container in a drawable manner; a shelf is arranged in the drawer and is separated from the bottom surface of the drawer; wherein the shelf comprises a supporting plate and a shelf magnetic source piece, and the supporting plate is provided with a plane for placing stored objects; the shelf magnetic source piece is arranged on the bottom face of the supporting plate and used for forming a magnetic field around the shelf. According to the fresh-keeping storage container, the drawer is arranged in the defined fresh-keeping storage space, the shelf is arranged in the drawer, and the shelf and the bottom face of the drawer are spaced so that the interior of the drawer can be separated up and down. According to the fresh-keeping storage container, the supporting plate and the shelf magnetic source part are specially arranged in the shelf, the supporting plate is used for supporting articles on the upper side, and the shelf magnetic source part can form a magnetic field around the shelf, so that the fresh-keeping storage container has a magnetic field fresh-keeping function.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and in particular to a fresh-keeping storage container and a refrigerator having the same. Background Art

[0002] With the improvement of material standards, refrigerators have become essential household appliances. Users can use refrigerators to preserve food at low temperatures, greatly extending the shelf life of food.

[0003] Although refrigerators can effectively extend the storage time of food, the freshness of food will also be lost quickly in low temperature environment, resulting in poor flavor and taste of food. Especially when freezing meat food, because the water inside the meat food will be frozen, and then large ice crystals will be produced inside the meat food. Large ice crystals will pierce the cells of the meat food, causing the meat food to lose juice after thawing, resulting in poor taste and loss of nutrition. Summary of the invention

[0004] Based on the above background, one aspect of the present invention is to provide a fresh-keeping storage container that can solve at least some of the above problems.

[0005] Another object of the present invention is to provide a refrigerator that can solve at least some of the above problems.

[0006] In particular, according to the first aspect of the present invention, the present invention provides a fresh-keeping storage container, which defines a fresh-keeping storage space inside and includes a drawer. The drawer is arranged in the fresh-keeping storage container in a pull-out manner; a shelf is arranged in the drawer, and the shelf is spaced from the bottom surface of the drawer; wherein the shelf includes a support plate and a shelf magnetic source component, the support plate has a plane for placing stored objects; the shelf magnetic source component is arranged on the bottom surface of the support plate, and is used to form a magnetic field around the shelf.

[0007] Optionally, the shelf magnetic source is a permanent magnetic sheet; and the upper surface of the permanent magnetic sheet and the lower surface of the support plate are both smooth planes, so that the permanent magnetic sheet and the support plate are closely attached.

[0008] Optionally, the shelf magnetic source is an electromagnetic field generating device.

[0009] Optionally, the fresh-keeping storage container further includes a wireless power supply device, which is disposed in the top wall or the bottom wall of the fresh-keeping storage container and is used to supply power to the electromagnetic field generating device.

[0010] Optionally, the shelf further comprises a bottom plate, which is arranged below the shelf magnetic source component; and the side edge of the bottom plate is flush with the support plate in the vertical direction.

[0011] Optionally, the shelf is located in the middle of the drawer in height direction.

[0012] Optionally, a slide is formed on each of the two lateral side walls of the drawer; and the two slides are parallel; the lateral ends of the shelf are respectively placed on the two slides, so that the shelf slides back and forth in the pulling direction of the drawer.

[0013] Optionally, the fresh-keeping storage container further comprises a magnetic field device, which comprises one or more magnetic field components and is configured to form a magnetic field that passes through the drawer in the longitudinal direction.

[0014] Optionally, the magnetic field assembly and the shelf magnetic source are configured to form a magnetic field that passes through the drawer in the same direction.

[0015] According to a second aspect of the present invention, the present invention provides a refrigerator comprising any one of the above-mentioned fresh-keeping storage containers.

[0016] The fresh-keeping storage container of the present invention is provided with a drawer in the fresh-keeping storage space defined therein, and a shelf is provided in the drawer, and the shelf is spaced from the bottom of the drawer so as to separate the interior of the drawer from top to bottom. A support plate and a shelf magnetic source are specially provided in the shelf, and the support plate is used to support items on the upper side, and the shelf magnetic source can form a magnetic field around the shelf, so that the fresh-keeping storage container has a magnetic field preservation function. Specifically, 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 the water molecule cluster. During the phase change process, the growth of the crystal nucleus is inhibited, the growth rate of the ice crystal is higher than the migration rate of the water molecules, and the ice crystals produced are smaller, thereby causing damage to the cells and reducing 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 the food. For example, the freezing temperature of beef is -2°C. When the magnetic field acts on the beef, the freezing temperature of the beef can drop to -5°C, so that the beef can be refrigerated at a lower temperature and remain fresh.

[0017] 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

[0018] 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:

[0019] Figure 1 is a schematic cross-sectional view of a fresh-keeping storage container according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic partial enlarged view of the fresh-keeping storage container shown;

[0021] Figure 3 yes Figure 2 A partial cross-sectional schematic diagram of a shelf shown in FIG.

[0022] Figure 4 yes Figure 1 A schematic side view of a drawer in the fresh food storage container shown;

[0023] Figure 5 yes Figure 1 An assembly schematic diagram of the fresh-keeping storage container shown;

[0024] Figure 6 yes Figure 1 A schematic side view of a magnetic field device in the fresh-keeping storage container shown;

[0025] Figure 7 yes Figure 6 A schematic exploded view of the magnetic field device shown;

[0026] Figure 8 is a schematic diagram of a refrigerator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0028] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0029] Secondly, it should be noted that in the description of the present application, terms such as "inside", "outside", "up", "down", "above", "along its height direction", "top", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0030] 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.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example disclosed in the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0032] Figure 1 is a schematic cross-sectional view of a fresh-keeping storage container 5 according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic partial enlarged view of the fresh-keeping storage container 5 is shown. The figure shows the assembly position of the drawer in the fresh-keeping storage container 5. It can be understood that the side of the drawer 10 close to the door of the refrigerator 1 is the front side of the drawer 10 in the pulling direction. In order to make the language description clear and concise, in the subsequent description, there may be a situation where the front / rear side or both sides of the drawer 10 in the pulling direction are omitted as the front / rear side or both sides of the drawer 10 (or shelf 20), but it can be understood that these descriptions of the directions actually have a unified standard and therefore there is no ambiguity.

[0033] refer to Figure 1 As shown, the fresh-keeping storage container 5 of the present invention defines a fresh-keeping storage space inside, and generally includes a drawer 10. The drawer 10 is arranged in the fresh-keeping storage container 5 in a pull-out manner. A shelf 20 is arranged in the drawer 10, and the shelf 20 is spaced from the bottom surface of the drawer 10. The shelf 20 includes a support plate 211 and a shelf magnetic source 212, the support plate 211 has a plane for placing stored objects, and the shelf magnetic source 212 is arranged on the bottom surface of the support plate 211, and is used to form a magnetic field around the shelf 20.

[0034] Existing magnetic field fresh-keeping refrigerators usually set magnetic source components inside the side walls of the drawer fresh-keeping storage container, which not only requires auxiliary adjustments to the structure inside the side walls of the fresh-keeping storage container, but also easily leads to thickening of the side walls of the fresh-keeping storage container. The present invention creatively sets the magnetic source components for forming the fresh-keeping magnetic field on the shelf 20 of the drawer 10, and provides a new fresh-keeping storage container 5 with a magnetic field fresh-keeping function.

[0035] Considering that the shelf magnetic source component 212 is usually not suitable to be directly used as a support plate for placing stored objects, this embodiment particularly provides an independent support plate 211 for the shelf 20 to provide a contact surface with the stored objects, and the shelf magnetic source component 212 is arranged on the bottom surface of the support plate 211, so that the support plate 211 and the shelf magnetic source component 212 are close to each other and serve as the plate body 21 of the shelf 20. The support plate 211 can be a glass plate, or a plastic plate or other plate.

[0036] Figure 3 yes Figure 2 2 is a partial cross-sectional schematic diagram of the shelf 20 , and specifically is a cross-sectional schematic diagram of the frame portion 23 of the shelf 20 .

[0037] refer to Figure 2 and Figure 3 As shown, in some optional embodiments, the shelf 20 includes a frame portion 23 in addition to the plate body portion 21 including the support plate 211 and the shelf magnetic source 212. The frame portion 23 is arranged on the circumferential side of the plate body portion 21 in the horizontal direction, and flanges 231 extending toward the middle of the plate body portion 21 are formed along the upper and lower surfaces of the plate body portion 21, respectively.

[0038] The flange 231 on the upper side of the plate body 21 is usually formed around the upper surface edge of the plate body 21, while the flange 231 on the lower side of the plate body 21 can be formed in sections. In some optional embodiments, the plate body 21 is square, and the flange 231 on the lower side of the plate body 21 is formed on each side of the frame body 23, and the length of any flange 231 can be shorter than the length of the side where the flange 231 is located. The flange 231 of the frame body 23 can clamp and fix the support plate 211 and the shelf magnetic source 212 to prevent the support plate 211 and the shelf magnetic source 212 from separating during use.

[0039] Considering that the shelf 20 is slidably disposed in the drawer 10, and the drawer 10 is also retractable relative to the refrigerator 1, in some optional embodiments, the frame portion 23 extends upward to form a fence 232 to prevent the items placed on the shelf 20 from falling. The fence 232 can effectively prevent the items on the shelf 20 from falling out of the shelf 20, greatly improving the user experience of the shelf 20.

[0040] In some optional embodiments, the frame 23 is an integrally formed part, and the two ends of the frame 23 are connected to form a square frame shape at the middle of the front side of the plate 21. The shelf 20 also includes a clamping member, which is arranged at the junction of the two ends of the frame 23 and is clamped and fixed to the two ends of the frame 23 at the same time.

[0041] The frame portion 23 is preferably made of an aluminum alloy material in one piece. Figure 4In the case of a square frame shape with two ends connected, it is only necessary to trim the flange 231 at the corresponding position of each corner, and the processing difficulty is relatively low. Since the frame 23 contacts the slide 15 of the drawer 10 and often contacts the stored objects or human hands during use, the frame 23 is preferably chamfered or rounded at each corner to avoid scratching the stored objects, human hands or the drawer 10. The clamping piece can be plugged and fixed to each end of the frame 23 from the upper and lower directions, and prevents the two ends of the frame 23 from being separated from the fixed position.

[0042] The magnetic field formed by the shelf magnetic source 212 mainly passes through the fresh-keeping storage space in the up-down direction. The area of ​​the shelf 20 can be set according to the size of the drawer 10 to adjust the coverage of the magnetic field. For example, on the basis that the width of the shelf 20 is adapted to the width of the internal space of the drawer 10, the length of the shelf 20 is also close to the length of the internal space of the drawer 10, and a gap is left between the front and back sides of the shelf 20 and the drawer 10 to facilitate the user to take out the shelf 20, so that the magnetic field formed by the shelf magnetic source 212 covers a larger space inside the drawer 10. Or it can also be as follows Figure 1 As shown, the length of the shelf 20 occupies only a part of the length of the inner space of the drawer 10 , and the magnetic field in the fresh-keeping storage space is mainly concentrated in the partial area where the shelf 20 is located.

[0043] It can be understood that the width of the drawer 10 (or shelf 20) refers to the lateral width of the drawer 10, and the length refers to the length in the pulling direction.

[0044] In order to prevent the shelf magnetic source 212 from being unsecured or deformed, in some optional embodiments, the shelf 20 further includes a bottom plate 213. The bottom plate 213 is disposed below the shelf magnetic source 212, and the side of the bottom plate 213 is flush with the support plate 211 in the vertical direction. By further disposing the bottom plate 213 below the shelf magnetic source 212 to support the shelf magnetic source 212, the plate body 21 of the shelf 20 is formed as follows: Figure 2 The shelf magnetic source 212 is shown to be fixed by both the support plate 211 and the bottom plate 213 .

[0045] The bottom plate 213 is usually made of the same material as the support plate 211 , and in some optional embodiments, the bottom plate 213 and the support plate 211 have the same shape and material and can be replaced with each other.

[0046] In some optional embodiments, the shelf magnetic source 212 is a permanent magnetic sheet; and the upper surface of the permanent magnetic sheet and the lower surface of the support plate 211 are both smooth planes, so that the permanent magnetic sheet and the support plate 211 are tightly attached.

[0047] The shelf magnetic source 212 in the above embodiment can be a permanent magnetic sheet, and the shape of the permanent magnetic sheet can be circular, or adapted to the shape of the shelf 20. The permanent magnetic sheet is preferably adsorbed on the support plate 211 by itself and the smooth surface on the support plate 211, so as to facilitate disassembly or replacement. In some optional embodiments, the shelf magnetic source 212 and the support plate 211 can also be fixed by bonding or other methods, and in the case where the frame portion 23 is not provided, it can also be ensured that the shelf magnetic source 212 and the support plate 211 will not separate during use.

[0048] In addition to the embodiment of setting a permanent magnetic sheet, in some optional embodiments, the shelf magnetic source 212 can also be set as an electromagnetic field generating device, such as an electromagnetic coil. Compared with a permanent magnetic sheet that forms a fixed magnetic field, the magnetic field formed by the electromagnetic coil is more controllable, and the electromagnetic field generating device can only form a fresh-keeping magnetic field when the user needs the magnetic field preservation function or when fresh food is stored in the drawer 10.

[0049] In particular, in some optional embodiments, the shelf magnetic source element 212 may include both a permanent magnetic sheet and an electromagnetic field generating device, and the two cooperate to form a fresh-keeping magnetic field.

[0050] The magnetic field generating device can be powered by wire. In some optional embodiments, the shelf 20 is fixed in the drawer 10, and the power transmission line of the electromagnetic field generating device can be led out from one lateral side or the rear side of the drawer 10 and connected to the inside of the side wall of the fresh-keeping storage container 5. By setting a winder, the problem of automatic retraction and release of the wire can be solved.

[0051] Considering that the wiring arrangement and disassembly and maintenance of the wired-powered magnetic field generating device are relatively troublesome, in some optional embodiments, the magnetic field generating device can be set as a wirelessly powered magnetic field generating device, and the fresh-keeping storage container 5 also includes a wireless power supply device (not shown in the figure), which is arranged in the top wall or bottom wall of the fresh-keeping storage container 5 to power the electromagnetic field generating device. The specific wireless power supply device can refer to the existing wireless power supply device using the electric field coupling principle or other principles, which will not be described in detail here.

[0052] In some optional embodiments, the shelf 20 is located in the middle of the drawer 10 in the height direction, so that the magnetic field strength in the space above and below the shelf 20 is more uniform.

[0053] Figure 4 yes Figure 1 A schematic side view of a drawer 10 in a fresh food storage container 5 is shown.

[0054] In some optional embodiments, a slide 15 is formed on each of the two lateral walls of the drawer 10, and the two slides are parallel. The lateral ends of the shelf 20 are respectively placed on the two slides 15, so that the shelf 20 slides forward and backward in the pulling direction of the drawer 10.

[0055] Figure 4 The arrow curve in FIG. 1 shows the position of the slide 15. Figure 1 Only the slideway 15 on one side wall of the drawer 10 can be seen, but it is obvious that a corresponding slideway 15 is also formed on the other side of the drawer 10 that is blocked. The user can adjust the position of the shelf 20 according to the placement of the food in the drawer 10, so that the magnetic field formed by the shelf magnetic source 212 covers more food. The shelf 20 allows the user to store items on both sides of it at the same time, and the items under the shelf 20 can be easily taken out by sliding the shelf 20 back and forth, making it more convenient to take out items in the drawer 10.

[0056] In some optional embodiments, the two side walls of the drawer 10 each include a lower wall plate located at the lower part of the side wall, an upper wall plate located at the upper part of the side wall, and an extension section extending from the upper end of the lower wall plate to the transverse outer side in the pulling direction of the drawer 10. The lower end of the upper wall plate is connected to the upper surface of the extension section and is spaced from the upper end of the lower wall plate, so that the side wall forms a slide 15 on the upper surface of the extension section between the upper end of the lower wall plate and the lower end of the upper wall plate.

[0057] refer to Figure 1 As shown, in some optional embodiments, the fresh-keeping storage container 5 further includes a magnetic field device 40 , which includes one or more magnetic field components and is configured to form a magnetic field that passes through the drawer 10 in the longitudinal direction.

[0058] In some optional embodiments, the fresh-keeping storage container 5 can form a fresh-keeping magnetic field using only the shelf magnetic source 212 on the shelf 20, while in other optional embodiments, the fresh-keeping storage container 5 can also be provided with a magnetic field device 40 on the basis of the shelf magnetic source 212, and one or more magnetic field components of the magnetic field device 40 can cooperate with the shelf magnetic source 212 to form a magnetic field.

[0059] In some optional embodiments, the magnetic field assembly and the shelf magnetic source 212 are configured to form a magnetic field that passes through the drawer 10 in the same direction. That is, the two poles facing the shelf magnetic source 212 and the magnetic field assembly are magnetically attracted to each other.

[0060] There are preferably two magnetic field components, which are respectively arranged in the top wall and the bottom wall of the fresh-keeping storage container 5. When the magnetic field device 40 and the shelf magnetic source component 212 form a magnetic field at the same time, the shelf magnetic source component 212 can serve as a transition of the magnetic fields formed by the two magnetic field devices 40, increase the magnetic field strength in the compartment and improve the uniformity of the magnetic field, prevent the magnetic field from attenuating in the middle of the fresh-keeping storage space far away from the magnetic field component and prevent the fresh-keeping effect from deteriorating, thereby improving the fresh-keeping effect of the fresh-keeping storage space.

[0061] After in-depth research on the preservation effect, the magnetic field parameters of the fresh-keeping storage container 5 of this embodiment are preferably configured as an effective magnetic field strength range: 20-80GS (2-8mT), and a magnetic field effective spacing range: 100-240mm, that is, the magnetic field can reach the above strength requirements within a spacing of 240mm from the magnetic source component. By setting the shelf magnetic source component 212 to cooperate with the magnetic field components inside the upper and lower side walls of the fresh-keeping storage container 5, the fresh-keeping storage container 5 of this embodiment can ensure that the fresh-keeping magnetic field in the fresh-keeping storage space has a good preservation effect even if the internal space height is greater than 240mm.

[0062] Figure 5 yes Figure 1 An assembly schematic diagram of the fresh-keeping storage container 5 is shown; Figure 6 yes Figure 1 A schematic side view of the magnetic field device 40 in the fresh-keeping storage container 5 is shown; Figure 7 yes Figure 6 A schematic exploded view of a magnetic field device 40 is shown.

[0063] from Figure 6 It can be seen that in some optional implementations, the magnetic field device 40 includes a first magnetic field component 41 and a second magnetic field component 42 that are arranged opposite to each other. In some embodiments, a magnetic field connector 44 that connects the first magnetic field component 41 and the second magnetic field component 42 may be further provided. Figure 5 As shown, the first magnetic field component 41 (the figure shows the first electromagnetic coil of the first magnetic field component 41) is arranged in the top wall of the fresh-keeping storage container 5.

[0064] refer to Figure 7 As shown, the first magnetic field component 41 and the second magnetic field component 42 can adopt basically the same structure. For example, the first magnetic field component 41 can include a first magnetic source sheet 412 and a first magnetic conductive plate 413. In some embodiments, the first magnetic field component 41 can be further provided with a first electromagnetic coil 411. Correspondingly, the second magnetic field component 42 can include a second magnetic source sheet 422 and a second magnetic conductive plate 423. In some embodiments, a second electromagnetic coil 421 can also be provided in the second magnetic field component 42.

[0065] The first magnetic source sheet 412 and the second magnetic source sheet 422 can be permanent magnetic sheets with uniform magnetization. Considering the coordination with the first magnetic conductive plate 413 and the second magnetic conductive plate 423, the permanent magnetic sheets can be made of permanent magnetic materials with certain flexibility. For example, a rubber magnetic sheet with flexibility made by a composite of bonded ferrite magnetic powder and synthetic rubber and a calendering molding process can be used.

[0066] 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 412, and the area of ​​the second magnetic conductive plate 423 can be slightly larger than the second magnetic source sheet 422. The area where the first magnetic conductive plate 413 contacts the first magnetic source sheet 412 and the surface of the first magnetic source sheet 412 are configured to have a flatness that meets the requirements, and the tolerance threshold of the flatness is as small as possible, for example, less than 0.1mm, or less than 0.05mm. By limiting the flatness, after the first magnetic conductive plate 413 and the first magnetic source sheet 412 are matched, the two can fit tightly to achieve zero gap matching, thereby improving the uniformity of the magnetic field.

[0067] Similarly, the area where the second magnetic conductive plate 423 contacts the second magnetic source sheet 422 and the surface of the second magnetic source sheet 422 are configured to have a flatness that meets the requirements, and the tolerance threshold of the flatness is as small as possible, for example, less than 0.1 mm, or less than 0.05 mm. By limiting the flatness, after the second magnetic conductive plate 423 and the second magnetic source sheet 422 are matched, the two can fit tightly to achieve zero gap matching, thereby improving the uniformity of the magnetic field. After testing, the first magnetic conductive plate 413 can adjust the magnetic field distribution of the first magnetic source sheet 412, and the second magnetic conductive plate 423 can adjust the magnetic field distribution of the second magnetic source sheet 422, thereby making the magnetic field more uniform and expanding the coverage of the magnetic field.

[0068] In some embodiments, the surfaces of the first magnetic conductive plate 413 and the second magnetic conductive plate 423 may be electroplated to form an anti-corrosion layer to meet the requirement of long-term use inside the refrigerator 1. The anti-corrosion layer is required to have a uniform thickness and not affect the coordination between the first magnetic conductive plate 413 and the first magnetic source sheet 412. The first magnetic conductive plate 413 and the second magnetic conductive plate 423 may also be treated with a UV coating for anti-corrosion.

[0069] In some embodiments, a magnetic adhesive may be coated between the first magnetic source sheet 412 and the first magnetic conductive plate 413, and between the second magnetic source sheet 422 and the second magnetic conductive plate 423 to achieve better adhesion between the two. The magnetic adhesive may be silicone magnetic adhesive or epoxy magnetic adhesive.

[0070] In some optional embodiments, the magnetic field device 40 may also be provided with a magnetic field connector 44. The magnetic field connector 44 connects the first magnetic field assembly 41 and the second magnetic field assembly 42 from both sides. The magnetic field connector 44 may be made of the same material as the first magnetic conductive plate 413 and the second magnetic conductive plate 423. In the embodiment where the first magnetic field assembly 41 and the second magnetic field assembly 42 are respectively arranged on the top surface and the bottom surface of the fresh-keeping storage container 5, the magnetic field connector 44 may be arranged on the lateral sides of the fresh-keeping storage container 5, with the top thereof connected to the first magnetic field assembly 41 and the bottom thereof connected to the second magnetic field assembly 42. The first magnetic field assembly 41, the second magnetic field assembly 42 and the magnetic field connectors 44 on both sides form an outer magnetic conductive path surrounding the fresh-keeping storage container 5, and the fresh-keeping storage space between the first magnetic field assembly 41 and the second magnetic field assembly 42 forms an internal magnetic field. The outer magnetic conductive path provides a closed path for the magnetic lines of force of the internal magnetic field, thereby concentrating the magnetic field and improving the uniformity of the internal magnetic field. At the same time, it can reduce the release of the magnetic field to the outside of the fresh-keeping storage container 5 and reduce interference with other external components (for example, avoiding magnetization of other components, etc.).

[0071] The magnetic field connector 44 is required to be able to meet the requirements of the aggregated external magnetic field. Generally speaking, the magnetic field connector 44 is connected to the center of the first magnetic field component 41 and the second magnetic field component 42. The magnetic field connector 44 on each side may be one or more. Figure 6 2 shows an embodiment in which a magnetic field connector 44 is arranged in the middle of the front and rear positions of the first magnetic field assembly 41 and the second magnetic field assembly 42. Alternatively, a plurality of magnetic field connectors 44 may be arranged at intervals along the front and rear direction of the magnetic field preservation container.

[0072] The width of the magnetic field connector 44 (i.e., the dimension along the front-to-back direction of the fresh-keeping storage container 5) can be one-fourth to one-third of the dimension of the first magnetic field assembly 41 in the front-to-back direction, and its thickness can be substantially consistent with the first magnetic conductive plate 413. The middle part of the magnetic field connector 44 can be fixed to the barrel body by a connector (e.g., a matching structure of a screw hole), thereby improving the reliability and stability of the structure. The insulation layer on both sides of the barrel body can be provided with corresponding grooves for the magnetic field connector 44 to accommodate the magnetic field connector 44. In other words, the left side wall of the barrel body and the right side wall of the barrel body respectively form a sandwich structure, and the insulation layer and the magnetic field connector 44 are arranged in the sandwich.

[0073] In some embodiments of the present embodiment, in order to improve the magnetic field strength, the first magnetic field component 41 and the second magnetic field component 42 may further be provided with electromagnetic coils, which are respectively located on the inner sides of the first magnetic source sheet 412 and the second magnetic source sheet 422. The electromagnetic coils 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 411 and the second electromagnetic coil 421 may be respectively located at the central positions of the first magnetic source sheet 412 and the second magnetic source sheet 422, and the magnetic pole direction of the magnetic field formed after power-on is consistent with the first magnetic source sheet 412 and the second magnetic source sheet 422 that are adjacent to each other.

[0074] In the above embodiment in which the magnetic field device 40 is provided and the magnetic field device 40 includes a first magnetic field component 41 and a second magnetic field component 42, the magnetic field formed by the magnetic field device 40 can be used as the main fresh-keeping magnetic field, and the magnetic field formed by the shelf magnetic source 212 is used to cooperate with the magnetic field device 40. The magnetic field strength of the shelf magnetic source 212 can be specifically set according to the height of the fresh-keeping storage space and the setting position of the shelf magnetic source 212, so as to maximize the fresh-keeping effect of the fresh-keeping storage space.

[0075] When the magnetic field device 40 and the shelf magnetic source 212 form a magnetic field at the same time, the shelf magnetic source 212 can serve as a transition of the magnetic fields formed by the two magnetic field devices 40, increase the magnetic field strength in the compartment and improve the uniformity of the magnetic field, prevent the magnetic field from attenuating in the middle of the fresh-keeping storage space away from the magnetic field assembly and causing the fresh-keeping effect to deteriorate, thereby improving the fresh-keeping effect of the fresh-keeping storage space. In some embodiments where the magnetic field device 40 is not provided, a shelf magnetic source 212 that can emit a stronger magnetic field is provided, and the magnetic field formed by the shelf magnetic source 212 is used as the fresh-keeping magnetic field.

[0076] Figure 8 is a schematic diagram of a refrigerator 1 according to an embodiment of the present invention.

[0077] refer to Figure 8 As shown, the present invention also provides a refrigerator 1, which generally may include a box body, a door body, and a refrigeration system (not shown in the figure). At least one storage compartment with an open front side may be defined in the box body, usually multiple, such as a refrigerated storage compartment, a frozen storage compartment, a variable temperature storage compartment, etc. Similarly, there may be multiple fresh-keeping storage containers 5 provided with drawers 10, and the number and function of the specific fresh-keeping storage containers 5 may be configured according to pre-determined requirements. The refrigerator 1 shown in the figure is only an example, and those skilled in the art can configure the number, function and layout of specific storage compartments according to requirements.

[0078] Multiple storage rooms can be spatially divided by racks, shelves, drawers 10, etc. to achieve corresponding storage functions, such as chilled, frozen, dry storage, etc. One or more fresh-keeping storage containers 5 can be arranged in the refrigerator 1 of this embodiment. In some optional embodiments, the fresh-keeping storage container 5 can be arranged in one or more of the above-mentioned multiple storage rooms, and the long-term high-quality cold preservation of food materials such as meat and fish can be achieved through magnetic field and temperature control. For example, the fresh-keeping storage container 5 can be arranged in any one of the refrigerated storage room, the frozen storage room, and the variable temperature storage room. For another example, the fresh-keeping storage container 5 can also be arranged in multiple refrigerated storage rooms, frozen storage rooms, and variable temperature storage rooms at the same time, that is, fresh-keeping storage containers 5 are respectively arranged in multiple different storage rooms at the same time. For another example, multiple fresh-keeping storage containers 5 can also be arranged in a storage room at the same time as needed.

[0079] 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 fresh-keeping storage container, which defines a fresh-keeping storage space inside and comprises: A drawer, which is drawable and arranged in the fresh-keeping storage container; A shelf is provided in the drawer, and the shelf is spaced apart from the bottom surface of the drawer; wherein, The shelf comprises: A support plate having a flat surface for placing stored items; The shelf magnetic source component is arranged on the bottom surface of the support plate and is used to form a magnetic field around the shelf.

2. The fresh-keeping storage container according to claim 1, wherein: The shelf magnetic source is a permanent magnetic sheet; and The upper surface of the permanent magnet sheet and the lower surface of the support plate are both smooth planes, so that the permanent magnet sheet and the support plate are closely attached.

3. The fresh-keeping storage container according to claim 1, wherein: The shelf magnetic source component is an electromagnetic field generating device.

4. The fresh-keeping storage container according to claim 3, further comprising: The wireless power supply device is arranged in the top wall or the bottom wall of the fresh-keeping storage container and is used to supply power to the electromagnetic field generating device.

5. The fresh-keeping storage container according to claim 1, wherein: The shelf also includes: A bottom plate is disposed below the shelf magnetic source component; and The side edge of the bottom plate is flush with the support plate in the vertical direction.

6. The fresh-keeping storage container according to claim 1, wherein: The shelf is located in the middle of the drawer in the height direction.

7. The fresh-keeping storage container according to claim 1, wherein: A slideway is formed on each of the two lateral walls of the drawer; and the two slideways are parallel; The two transverse ends of the shelf are respectively placed on the two slideways, so that the shelf can slide back and forth in the pulling direction of the drawer.

8. The fresh-keeping storage container according to claim 1, further comprising: A magnetic field device includes one or more magnetic field components and is configured to form a magnetic field that passes through the drawer in a longitudinal direction.

9. The fresh-keeping storage container according to claim 8, wherein: The magnetic field assembly and the shelf magnetic source are configured to form a magnetic field that passes through the drawer in the same direction.

10. A refrigerator, comprising: A fresh-keeping storage container according to any one of claims 1 to 9.

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