A fresh-keeping storage container and a refrigerator

Abstract

The application provides a fresh-keeping storage container and a refrigerator, which comprise a storage box, a first main magnetic piece, a secondary magnetic piece and a second main magnetic piece. The first main magnetic piece, the secondary magnetic piece and the second main magnetic piece are sequentially arranged on the storage box along a first direction of the storage box. The magnetic poles of the first main magnetic piece and the second main magnetic piece face each other in opposite directions. The secondary magnetic piece is used for increasing the magnetic field intensity of the first main magnetic piece and the second main magnetic piece in the storage box and reducing the magnetic field intensity of the first main magnetic piece and the second main magnetic piece outside the storage box.

Description

Technical Field

[0001] This application relates to the field of refrigerator preservation technology, and particularly to preservation storage containers and refrigerators. Background Technology

[0002] As living standards improve, consumers have increasingly higher demands for food preservation. Preservation technologies have evolved from initial humidity and temperature control to modified atmosphere storage, vacuum storage, electric field storage, and magnetic field storage. Among these, magnetic field storage offers superior preservation results. Magnetic field storage transforms diamagnetic water molecules from a disordered state into an ordered one, thereby reducing biological metabolism and enzyme activity, achieving multiple preservation effects such as high water retention, antioxidant properties, and antibacterial activity.

[0003] In the prior art, magnetic components are placed inside the food preservation container. The magnetic field they generate is not only located inside the container but also exists outside the container. The magnetic field outside the container has an adverse effect on the electronic devices outside the container, reducing the reliability, accuracy and sensitivity of the external electronic devices. Summary of the Invention

[0004] The main purpose of this application is to provide a food preservation container that aims to solve the technical problem of interference of magnetic field preservation with external electronic devices.

[0005] This application provides a food preservation storage container, including:

[0006] A storage box having a receiving cavity;

[0007] First main magnetic component;

[0008] Secondary magnetic components; and

[0009] Second main magnetic component;

[0010] The first main magnetic component, the secondary magnetic component, and the second main magnetic component are sequentially disposed on the storage box along a first direction of the storage box; wherein the magnetic poles of the first main magnetic component and the second main magnetic component facing the receiving cavity are opposite; the secondary magnetic component is used to increase the magnetic field strength of the first main magnetic component and the second main magnetic component in the receiving cavity and to decrease the magnetic field strength of the first main magnetic component and the second main magnetic component outside the storage box.

[0011] Optionally, the magnetic pole of the secondary magnetic element facing the first primary magnetic element is the same as the magnetic pole of the first primary magnetic element facing the receiving cavity; the magnetic pole of the secondary magnetic element facing the second primary magnetic element is the same as the magnetic pole of the second primary magnetic element facing the receiving cavity.

[0012] Optionally, the width of the first main magnetic component is W1; the width of the second main magnetic component is W2; and the width of the secondary magnetic component is W3.

[0013] Wherein, the ratio of W1 to W3 is 5:1 to 10:1; and / or the ratio of W2 to W3 is 5:1 to 10:1.

[0014] Optionally, the first main magnetic component and the second main magnetic component are alternately arranged along the first direction; the auxiliary magnetic component is provided between any two adjacent first main magnetic components and second main magnetic components.

[0015] Optionally, the total number of the first main magnetic component and the second main magnetic component is N, wherein the value of N ranges from 3 to 8.

[0016] Optionally, the first main magnetic component, the secondary magnetic component, and the second main magnetic component are sequentially disposed at the bottom of the storage box along a first direction of the storage box.

[0017] Optionally, the first main magnetic component includes a permanent magnet and / or a first coil; and / or

[0018] The second main magnetic component is a permanent magnet and / or includes a second coil; and / or

[0019] The secondary magnetic component is a permanent magnet and / or includes a third coil.

[0020] Optionally, at a first preset distance outside the food preservation container, the magnetic induction intensity of the first main magnetic component, the secondary magnetic component, and the second main magnetic component is less than or equal to 0.5 mT.

[0021] Optionally, the magnetic induction intensity of the first main magnetic element, the secondary magnetic element, and the second main magnetic element at a second preset distance from the storage box within the receiving cavity is greater than or equal to 2mT.

[0022] This application also proposes a refrigerator, including: an inner liner; and a food preservation container as described above, wherein the food preservation container is disposed inside the inner liner.

[0023] In the technical solution of this application embodiment, a first main magnetic component, a secondary magnetic component, and a second main magnetic component are sequentially arranged on the storage box along its first direction; the magnetic poles of the first main magnetic component and the second main magnetic component facing the receiving cavity are opposite; therefore, inside the receiving cavity, magnetic field lines run from the first main magnetic component to the second main magnetic component (or from the second main magnetic component to the first main magnetic component), and outside the receiving cavity, magnetic field lines run from the second main magnetic component to the first main magnetic component (or from the first main magnetic component to the second main magnetic component); and a secondary magnetic component is arranged between the two, which increases the magnetic field strength of the first main magnetic component and the second main magnetic component inside the receiving cavity and decreases the magnetic field strength of the first main magnetic component and the second main magnetic component outside the storage box, thereby reducing the magnetic field strength of the magnetic components outside the storage container, so as to reduce the intensity of interference caused by the magnetic field to the electronic devices; moreover, the technical solution of this application embodiment can also increase the magnetic field strength inside the receiving cavity and improve the preservation effect. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a food preservation and storage container provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a magnetic component provided in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the magnetic field distribution of a magnetic component provided in an embodiment of this application;

[0028] Figure 4 A schematic diagram illustrating the principle of a magnetic component for improving the strength of an external magnetic field, provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of another magnetic component provided in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of another magnetic component provided in an embodiment of this application;

[0031] Figure 7 A schematic diagram illustrating the change in magnetic field strength of the food preservation container provided in this application embodiment as a function of distance;

[0032] Figure 8 A comparison diagram illustrating the change of magnetic field strength with distance between the food preservation container provided in this application embodiment and the prior art;

[0033] Figure 9 This is a schematic diagram illustrating the change in magnetic field strength in a food storage container provided in this embodiment of the application as a function of the number of main magnets.

[0034] List of reference numerals

[0035] 02 Magnetic components 130 Third main magnetic component 110 First main magnetic component Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0040] Magnetic field preservation utilizes a weak magnetic field to cause diamagnetic water molecules to change from disordered to ordered states, thereby reducing biological metabolism and enzyme activity, achieving multiple preservation effects such as high water retention, anti-oxidation, and antibacterial properties. Magnetic fields have a certain degree of diffusion and can interfere with surrounding electrical components. In existing technologies, if magnetic components (such as permanent magnets or electromagnets) are placed inside a refrigerator, the magnetic field generated by these components exists not only inside the refrigerator but also outside. The external magnetic field can interfere with the electronic components inside the refrigerator, reducing their reliability, accuracy, or sensitivity. Therefore, this application provides a preservation storage container designed to reduce the magnetic field strength of the magnetic components outside the container, thereby reducing the intensity of interference caused by the magnetic field to the electronic components inside the refrigerator.

[0041] Reference Figures 1 to 3 As shown in the figure, this application provides a food preservation storage container, including:

[0042] Storage box 01, the storage box 01 having a receiving cavity;

[0043] First main magnetic component 110;

[0044] Secondary magnetic component 130; and

[0045] Second main magnetic component 120;

[0046] The first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 are sequentially disposed on the storage box 01 along a first direction of the storage box 01; wherein, the magnetic poles of the first main magnetic component 110 and the second main magnetic component 120 facing the receiving cavity are opposite; the secondary magnetic component 130 is used to increase the magnetic field strength of the first main magnetic component 110 and the second main magnetic component 120 in the receiving cavity and decrease the magnetic field strength of the first main magnetic component 110 and the second main magnetic component 120 outside the storage box 01.

[0047] In the technical solution of this application embodiment, a first main magnetic component 110, a secondary magnetic component 130, and a second main magnetic component 120 are sequentially arranged on the storage box 01 along its first direction; the magnetic poles of the first main magnetic component 110 and the second main magnetic component 120 facing the receiving cavity are opposite; therefore, inside the receiving cavity, magnetic field lines run from the first main magnetic component 110 to the second main magnetic component 120 (or from the second main magnetic component 120 to the first main magnetic component 110), and outside the receiving cavity, magnetic field lines run from the second main magnetic component 120 to the first main magnetic component 110 (or from the first main magnetic component 120 to the first main magnetic component 110). The magnetic components 110 and 120 are connected in a primary magnetic component; and a secondary magnetic component 130 is provided between them. The secondary magnetic component 130 increases the magnetic field strength of the first primary magnetic component 110 and the second primary magnetic component 120 in the receiving cavity and decreases the magnetic field strength of the first primary magnetic component 110 and the second primary magnetic component 120 outside the storage box 01, thereby reducing the magnetic field strength of the magnetic components outside the storage container, so as to reduce the intensity of interference caused by the magnetic field to the electronic components. Moreover, the technical solution of this application embodiment can also improve the magnetic field strength in the receiving cavity and improve the preservation effect.

[0048] Reference Figure 4 As shown, the upper side of the magnetic assembly 02, composed of the first main magnetic element 110, the secondary magnetic element 130, and the second main magnetic element 120, represents the interior of the receiving cavity, while the lower side represents the exterior of the storage box 01. On the upper side, the magnetic field lines from the first main magnetic element 110 to the second main magnetic element 120 are in the same direction as the magnetic field lines of the secondary magnetic element 130, thereby increasing the magnetic field strength of the first main magnetic element 110 and the second main magnetic element 120 within the receiving cavity. On the lower side, the magnetic field lines from the first main magnetic element 110 to the second main magnetic element 120 are in the opposite direction to the magnetic field lines of the secondary magnetic element 130, canceling out at least a portion of the magnetic field strength, thus weakening the magnetic field strength of the first main magnetic element 110 and the second main magnetic element 120 outside the storage box 01.

[0049] In the technical solution of this application embodiment, the magnetic assembly composed of the first main magnetic component, the secondary magnetic component, and the second main magnetic component can be placed on various walls of the storage box. For refrigerator preservation, since food is mostly concentrated at the bottom, it is usually placed at the bottom of the storage box.

[0050] like Figure 7 As shown, the curve S2 represents the change in magnetic induction intensity outside the food storage container with distance from storage box 01, and the curve S1 represents the change in magnetic induction intensity inside the container with distance from storage box 01. The 0 point on the horizontal axis represents the position where the magnetic component 02 is set. The two curves are asymmetrical. At the same distance, the external magnetic induction intensity decreases significantly, while the internal magnetic induction intensity increases significantly.

[0051] like Figure 8 As shown, the existing single-magnet technology produces symmetrical magnetic induction intensity curves inside and outside the food storage container. However, with the technology of this application, the internal magnetic field strength increases significantly, while the external magnetic field strength decreases significantly.

[0052] In this embodiment, the first direction can be the length direction, height direction, or width direction of the storage and preservation container. The storage and preservation container also has a second direction and a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0053] As an optional implementation of the above embodiments, the magnetic poles of the secondary magnetic element 130 facing the first primary magnetic element 110 are the same as the magnetic poles of the first primary magnetic element 110 facing the receiving cavity; the magnetic poles of the secondary magnetic element 130 facing the second primary magnetic element 120 are the same as the magnetic poles of the second primary magnetic element 120 facing the receiving cavity. Figure 3 and Figure 4 As shown, for example, the magnetic pole of the first main magnetic component 110 facing the receiving cavity is the N pole, and the magnetic pole of the second main magnetic component 120 facing the receiving cavity is the S pole. Then, the magnetic pole of the secondary magnetic component 130 facing the first main magnetic component 110 is the N pole, and the magnetic pole of the secondary magnetic component 130 facing the second main magnetic component 120 is the S pole. With this configuration, on the upper side, the direction of the magnetic field lines from the first main magnetic component 110 to the second main magnetic component 120 is the same as the direction of the magnetic field lines of the secondary magnetic component 130, thereby increasing the magnetic field strength of the first main magnetic component 110 and the second main magnetic component 120 in the receiving cavity; on the lower side, the direction of the magnetic field lines from the first main magnetic component 110 to the second main magnetic component 120 is opposite to the direction of the magnetic field lines of the secondary magnetic component 130, canceling out at least part of the magnetic field strength of the first main magnetic component 110 and the second main magnetic component 120 outside the storage box 01.

[0054] As an optional implementation of the above embodiments, the width of the first main magnetic component 110 is W1; the width of the second main magnetic component 120 is W2; and the width of the secondary magnetic component 130 is W3. The ratio of W1 to W3 is 5:1 to 10:1; and / or the ratio of W2 to W3 is 5:1 to 10:1. In this embodiment, the width is the dimension of the first main magnetic component 110, the second main magnetic component 120, and the secondary magnetic component 130 along the first direction. In this embodiment, the magnetic field strength within the accommodating cavity mainly relies on the magnetic circuit between the first main magnetic component 110 and the second main magnetic component 120, while the secondary magnetic component 130 mainly enhances the magnetic field strength of this magnetic circuit and weakens the magnetic field strength of the external magnetic circuit. Moreover, setting the ratio of W1 to W3 to 5:1 to 10:1; and / or the ratio of W2 to W3 to 5:1 to 10:1 is mainly to ensure that there is essentially no magnetic flux between the secondary magnetic components 130.

[0055] In some embodiments, the width W1 of the first main magnetic element 110 and the width W2 of the second main magnetic element 120 are set to be the same.

[0056] Therefore, in some embodiments, the width of the secondary magnetic element 130 is set in proportion to the width of the first primary magnetic element 110 and the width of the second primary magnetic element 120 in order to ensure that there is essentially no magnetic flux between the secondary magnetic elements 130.

[0057] As an optional implementation of the above embodiments, the first main magnetic component 110 and the second main magnetic component 120 are alternately arranged along the first direction; the secondary magnetic component 130 is provided between any two adjacent first main magnetic components 110 and second main magnetic components 120. This arrangement can effectively enhance the magnetic field strength in the area near the magnetic component 02 and reduce the interference of the magnetic field on the outside.

[0058] from Figure 8 As can be seen from this, the variation law of magnetic induction intensity inside the cavity is as follows:

[0059] a. When the distance from the magnetic component 02 is between 0 and ha, and ha ≥ 5 cm, B3 > B2 > B1, indicating that the magnetic field is mainly concentrated in the bottom space area inside the drawer; (N in BN represents the number of main magnets, such as B3 representing the magnetic field strength of 3 main magnets.)

[0060] When the distance from the magnetic component 02 is between ha and hb, B2 > B3 > B1. Within this height range, the magnetic induction intensity produced by the two main magnets exceeds that of the three main magnets, but the magnetic induction intensity is still higher than that of the single magnet scheme.

[0061] c. When the distance from the magnetic component 02 is between hb and hc, B2 > B1 > B3. Within this height range, the magnetic induction intensity of a single main magnet exceeds that of three main magnets.

[0062] When the distance from the magnetic component 02 is greater than hc, B1 > B2 > B3. Within this height range, the magnetic induction intensity of a single main magnet is the strongest, exceeding that of two or three main magnets. This is because the magnetic field of a single magnet is emitted, while that of two or three main magnets is concentrated. Therefore, the magnetic field of the combination design of two or three main magnets is mainly concentrated at the bottom, while the magnetic field of a single magnet is dispersed throughout the drawer space. This can effectively preserve the food gathered at the bottom of the container cavity.

[0063] (2) The variation law of magnetic induction intensity outside the drawer is as follows:

[0064] B3 < B2 < B1, where the combined design of the three magnets has a magnetic induction intensity at hd (≤2cm) < B limit (0.5mT), indicating that the combined design effectively reduces the magnetic induction intensity outside the cavity and avoids damage to other components other than storage box 01 by the magnetic field.

[0065] As can be seen from the above variation patterns, compared to traditional single magnets, the technical solution provided in this application effectively increases the magnetic induction intensity inside the cavity and weakens the magnetic induction intensity outside the cavity. This solves the problems of the traditional single magnetic sheet's magnetic field lines diffusing outwards, resulting in low utilization efficiency, and the leakage of the magnetic field affecting other components outside the cavity. It achieves enhanced magnetic induction intensity inside the cavity and weakened magnetic induction intensity outside the cavity, effectively acting on the food and improving its preservation effect. Compared to existing technologies, the technical solution of this application has the following technical advantages, summarized in detail below:

[0066] (1) It adopts a combined design with magnetic self-shielding characteristics, which can form a single-sided enhancement and the opposite side has magnetic self-shielding characteristics, thereby increasing the strength inside the cavity and weakening the outside.

[0067] (2) It achieves high magnetic field strength inside the cavity space, high magnetic field utilization efficiency, and stronger magnetic field compared with permanent magnets of the same volume;

[0068] (3) Magnetic leakage is reduced, so there is no need to use magnetic conductive or shielding materials for shielding.

[0069] As an optional implementation of the above embodiments, the total number of the first main magnetic component 110 and the second main magnetic component 120 is N, wherein the value of N ranges from 3 to 8. (Refer to...) Figure 9 As shown, the curves of magnetic induction intensity inside and outside the cavity vary with the number of main magnets N.

[0070] a. Wherein, Beffective represents the magnetic flux density within the cavity where the magnetic field can function, and it must satisfy Beffective ≥ 2mT at height h (at least 5cm). S11 represents the curve showing the change in magnetic flux density within the cavity as the number of main magnets increases. The magnetic flux density at height h within the cavity initially increases and then decreases with the increase in the number of main magnets;

[0071] b. Here, B represents the limit value of the magnetic field outside the cavity to prevent magnetic leakage from damaging other components outside the cavity. The magnetic induction intensity B at a height h' (maximum 2cm) outside the cavity must be ≤0.5mT. S22 represents the curve showing the change in magnetic induction intensity outside the cavity as the number of main magnets increases. The magnetic induction intensity at a height h' outside the cavity shows a trend of first decreasing and then increasing as the number of main magnets increases.

[0072] c. Therefore, in order to ensure the preservation effect of the magnetic field on the food and to prevent the magnetic field from leaking out, the number of main magnets is preferably 3 to 8. When the number of main magnets (N) is less than 3, the magnetic induction intensity at the bottom is greater than 0.5mT, the shielding effect is limited, and the magnetic field lines spread into the space, causing other components outside the cavity to be affected. When the number of magnetic sheets is greater than 8, the magnetic shielding effect outside the cavity is weakened, exceeding the limit.

[0073] Therefore, in some technical solutions of this application embodiment, the total number of the first main magnetic component 110 and the second main magnetic component 120 is N, wherein the value of N ranges from 3 to 8. Correspondingly, the number of secondary magnetic components 130 is N-1.

[0074] As an optional implementation of the above embodiments, the first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 are sequentially arranged at the bottom of the storage box 01 along a first direction. In this embodiment, more food items are stored and gathered at the bottom of the storage box 01; therefore, the first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 are sequentially arranged at the bottom of the storage box 01 along a first direction. (See attached...) Figure 7 As can be seen, the magnetic field strength gradually decreases from the bottom to the top, but becomes stronger at the bottom, which is beneficial for the preservation of food.

[0075] As an optional implementation of the above embodiments, the first main magnetic component 110 includes a permanent magnet and / or a first coil; and / or the second main magnetic component 120 is a permanent magnet and / or includes a second coil; and / or the secondary magnetic component 130 is a permanent magnet and / or includes a third coil. In the embodiments, the permanent magnet can be a rare earth permanent magnet (neodymium iron boron, samarium cobalt, etc.), a metallic permanent magnet (AlNiCo, etc.), a ferrite permanent magnet, a rubber magnet, etc. Based on cost and manufacturability, a rubber magnet is preferred, which is a composite of ferrite magnetic powder and synthetic rubber, and then formed into a magnet with a certain degree of softness and elasticity through a process. In the embodiments, the principle of electromagnetism can also be utilized, by energizing a metal coil to generate a magnetic field with the same direction, the metal coil preferably being a copper coil, a copper-clad aluminum coil, etc. In some embodiments, the magnetic component can also be a combination of both, when using a combination of both, the magnetic field directions generated by the permanent magnet and the coil need to be consistent.

[0076] In some embodiments, the first main magnetic component 110 is a permanent magnet; the second main magnetic component 120 is a permanent magnet; and the secondary magnetic component 130 includes a third coil. By passing different currents through the third coil, the magnitude of the increase in internal magnetic field strength and the magnitude of the decrease in external magnetic field strength can be adjusted.

[0077] In some embodiments, the first main magnetic component 110 includes a first coil; the second main magnetic component 120 includes a second coil; and the secondary magnetic component 130 is a permanent magnet. By passing different currents through the first and second coils, the internal magnetic field strength and the weakening of the external magnetic field strength can be adjusted by increasing the internal magnetic field strength and weakening the external magnetic field strength by a certain amount through the secondary magnetic component 130.

[0078] The above embodiments can be specifically configured according to specific application scenarios (such as refrigeration, freezing, or variable temperature). As an optional implementation of the above embodiments, at a first preset distance outside the food storage container, the magnetic induction intensity of the first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 is less than or equal to 0.5 mT. (Refer to...) Figure 7 As shown, the curve S2 represents the change in magnetic induction intensity outside the food storage container with respect to the distance from the storage box 01. Observing the curve S2, the first preset distance is h'. At position h', the magnetic induction intensity of the first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 is less than or equal to 0.5 mT. Therefore, the magnetic induction intensity at positions greater than h' is less than 0.5 mT. This significantly reduces the range of high external magnetic field strength where the magnetic component 02 is located, which is beneficial for saving refrigerator space.

[0079] In the embodiments, the preset distance can be 2mm, 1.5mm or 2.5mm.

[0080] As an optional implementation of the above embodiments, the magnetic induction intensity of the first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 within the accommodating cavity at a second preset distance from the storage box 01 is greater than or equal to 2 mT. (Refer to...) Figure 7 As shown, the curve S1 shows the change in magnetic induction intensity within the containment cavity with respect to the distance from storage box 01. Observing from the curve S1, the second preset distance is h. At position h, the magnetic induction intensity of the first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 is greater than or equal to 2mT. Therefore, the magnetic induction intensity at positions less than h is greater than 2mT, thereby effectively improving the storage time of food.

[0081] In this embodiment, the first main magnetic component 110, the secondary magnetic component 130, and the second main magnetic component 120 are located at the bottom. The magnetic induction intensity at a second preset distance (preset height) from the storage box 01 within the accommodating cavity is greater than or equal to 2mT. Therefore, the magnetic induction intensity at positions less than h is greater than 2mT. When storing food, it is more concentrated at the bottom, thus effectively improving the storage time of food.

[0082] In the embodiments, the second preset distance is 5mm, 4.5mm or 6mm.

[0083] This application also proposes a refrigerator, including: an inner liner; and a food preservation storage container disposed within the inner liner. The food preservation storage container employs some or all of the technical solutions of the foregoing embodiments, thus the refrigerator possesses the technical effects of the foregoing embodiments. In the embodiments, the inner liner can be a refrigeration inner liner, a freezing inner liner, or a variable temperature inner liner. The food preservation storage container can be constructed as a drawer.

[0084] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the content of the specification and drawings of this application under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A food preservation and storage container, characterized in that, include: A storage box having a receiving cavity; First main magnetic component; Secondary magnetic components; and Second main magnetic component; The first main magnetic component, the secondary magnetic component, and the second main magnetic component are sequentially disposed at the bottom of the storage box along a first direction of the storage box. The magnetic poles of the first main magnetic component and the second main magnetic component facing the receiving cavity are opposite, such that within the receiving cavity, magnetic field lines flow from the first main magnetic component to the second main magnetic component or from the second main magnetic component to the first main magnetic component. The secondary magnetic component is used to increase the magnetic field strength of the magnetic field lines between the first main magnetic component and the second main magnetic component within the receiving cavity and to decrease the magnetic field strength of the first main magnetic component and the second main magnetic component outside the storage box.

2. The food preservation container as described in claim 1, characterized in that, The magnetic pole of the secondary magnetic component facing the first primary magnetic component is the same as the magnetic pole of the first primary magnetic component facing the receiving cavity; the magnetic pole of the secondary magnetic component facing the second primary magnetic component is the same as the magnetic pole of the second primary magnetic component facing the receiving cavity.

3. The food preservation container as described in claim 2, characterized in that, The width of the first main magnetic component is W1; the width of the second main magnetic component is W2; and the width of the secondary magnetic component is W3. Wherein, the ratio of W1 to W3 is 5:1 to 10:1; and / or the ratio of W2 to W3 is 5:1 to 10:

1.

4. The food preservation container as described in any one of claims 1 to 3, characterized in that, The first main magnetic component and the second main magnetic component are alternately arranged along the first direction; the auxiliary magnetic component is provided between any two adjacent first main magnetic components and second main magnetic components.

5. The food preservation container as described in any one of claims 1 to 3, characterized in that, The number of the first main magnetic component and the second main magnetic component is N in total, wherein the value of N ranges from 3 to 8.

6. The food preservation container as described in any one of claims 1 to 3, characterized in that, The first main magnetic component includes a permanent magnet and / or a first coil; and / or The second main magnetic component is a permanent magnet and / or includes a second coil; and / or The secondary magnetic component is a permanent magnet and / or includes a third coil.

7. The food preservation container as described in any one of claims 1 to 3, characterized in that, At a first preset distance outside the food preservation container, the magnetic induction intensity of the first main magnetic component, the secondary magnetic component, and the second main magnetic component is less than or equal to 0.5 mT.

8. The food preservation container as described in any one of claims 1 to 3, characterized in that, The magnetic induction intensity of the first main magnetic component, the secondary magnetic component, and the second main magnetic component at a second preset distance from the storage box within the accommodating cavity is greater than or equal to 2mT.

9. A refrigerator, characterized in that, include: Inner liner; And the food preservation storage container according to any one of claims 1 to 8, wherein the food preservation storage container is disposed within the inner liner.

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