Fresh-keeping storage container and refrigerator

Abstract

The present application provides a fresh-keeping storage container and a refrigerator. The fresh-keeping storage container comprises: a storage box, the storage box being provided with an accommodating cavity; a first main magnetic member; an auxiliary magnetic member; and a second main magnetic member. The first main magnetic member, the auxiliary magnetic member and the second main magnetic member are sequentially arranged on the storage box in a first direction of the storage box. The magnetic pole of the first main magnetic member facing the accommodating cavity is opposite to the magnetic pole of the second main magnetic member facing the accommodating cavity. The auxiliary magnetic member is used for increasing the magnetic field strength of the first main magnetic member and of the second main magnetic member in the accommodating cavity and reducing the magnetic field strength of the first main magnetic member and of the second main magnetic member outside the storage box.

Description

Fresh-keeping storage container and refrigerator

[0001] The present application claims priority to Chinese Patent Application Nos. 202411027583.7 and 202421812833.3, filed on July 29, 2024, with the Chinese Patent Office, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of refrigerator fresh-keeping, in particular to a fresh-keeping storage container and a refrigerator. BACKGROUND

[0003] With the improvement of living standards, users have higher and higher demands for food preservation. Fresh-keeping technology has evolved from initial wet and warm control to modified atmosphere preservation, vacuum preservation, electric field preservation, and magnetic field preservation. Among them, magnetic field preservation has better preservation effect. Magnetic field preservation makes water molecules with magnetic resistance change from disorder to order, thereby reducing biological metabolism, enzyme activity, and achieving multiple preservation effects such as high water retention, oxidation resistance, and bacteriostasis of food.

[0004] In the prior art, the magnetic member is arranged in the fresh-keeping container, and the magnetic field generated thereby exists not only in the container but also outside the container. The magnetic field outside the container adversely affects the electronic devices outside the container, reducing the reliability, accuracy, and sensitivity of the external electronic devices. TECHNICAL PROBLEM

[0005] The main purpose of the present application is to provide a fresh-keeping storage container and a refrigerator, aiming to solve the technical problem of magnetic field preservation interfering with external electronic devices. TECHNICAL SOLUTION

[0006] In a first aspect, the present application provides a fresh-keeping storage container, comprising:

[0007] a storage box having a receiving cavity;

[0008] a first main magnetic member;

[0009] a secondary magnetic member; and

[0010] a second main magnetic member;

[0011] The first main magnetic member, the secondary magnetic member, and the second main magnetic member are sequentially arranged on the storage box along a first direction of the storage box; the magnetic poles of the first main magnetic member and the second main magnetic member facing the receiving cavity are opposite; the secondary magnetic member is used to increase the magnetic field strength of the first main magnetic member and the second main magnetic member in the receiving cavity and to reduce the magnetic field strength of the first main magnetic member and the second main magnetic member outside the storage box.

[0012] The fresh-keeping storage container, wherein, inside the accommodating cavity, the magnetic induction line direction of the first main magnetic piece to the second main magnetic piece is the same as the magnetic induction line direction of the auxiliary magnetic piece; outside the storage box, the magnetic induction line direction of the first main magnetic piece to the second main magnetic piece is opposite to the magnetic induction line direction of the auxiliary magnetic piece.

[0013] The fresh-keeping storage container, wherein, the magnetic pole of the auxiliary magnetic piece facing the first main magnetic piece is the same as the magnetic pole of the first main magnetic piece facing the accommodating cavity; the magnetic pole of the auxiliary magnetic piece facing the second main magnetic piece is the same as the magnetic pole of the second main magnetic piece facing the accommodating cavity.

[0014] The fresh-keeping storage container, wherein, the width of the first main magnetic piece is W1; the width of the second main magnetic piece is W2; the width of the auxiliary magnetic piece is W3;

[0015] 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.

[0016] The fresh-keeping storage container, wherein, the width W1 of the first main magnetic piece is equal to the width W2 of the second main magnetic piece.

[0017] The fresh-keeping storage container, wherein, the first main magnetic piece and the second main magnetic piece are alternately arranged along the first direction; the auxiliary magnetic piece is arranged between any two adjacent first main magnetic pieces and second main magnetic pieces.

[0018] The fresh-keeping storage container, wherein, the number of the first main magnetic piece and the second main magnetic piece is N, wherein, the value range of N is 3 to 8.

[0019] The fresh-keeping storage container, wherein, the first main magnetic piece, the auxiliary magnetic piece and the second main magnetic piece are sequentially arranged on the bottom of the storage box along the first direction of the storage box.

[0020] The fresh-keeping storage container, wherein, the first main magnetic piece comprises a permanent magnet and / or a first coil.

[0021] The fresh-keeping storage container, wherein,

[0022] The second main magnetic piece is a permanent magnet and / or comprises a second coil.

[0023] The fresh-keeping storage container, wherein,

[0024] The auxiliary magnetic piece is a permanent magnet and / or comprises a third coil.

[0025] The fresh-keeping storage container, wherein the first main magnetic piece is a permanent magnet, the second main magnetic piece is a permanent magnet, and the auxiliary magnetic piece is a third coil.

[0026] The fresh-keeping storage container, wherein the current of the third coil is adjustable.

[0027] The fresh-keeping storage container, wherein the first main magnetic piece is a first coil, the second main magnetic piece is a second coil, and the auxiliary magnetic piece is a permanent magnet.

[0028] The fresh-keeping storage container, wherein the current of the first coil and the second coil is adjustable.

[0029] The fresh-keeping storage container, wherein the magnetic induction intensity of the first main magnetic piece, the auxiliary magnetic piece and the second main magnetic piece is less than or equal to 0.5mT at a first preset distance outside the fresh-keeping storage container.

[0030] The fresh-keeping storage container, wherein the first preset distance is 2mm, 1.5mm or 2.5mm.

[0031] The fresh-keeping storage container, wherein the magnetic induction intensity of the first main magnetic piece, the auxiliary magnetic piece and the second main magnetic piece is greater than or equal to 2mT at a second preset distance from the storage box in the accommodation cavity.

[0032] The fresh-keeping storage container, wherein the second preset distance is 5mm, 4.5mm or 6mm.

[0033] In a second aspect, the application further provides a refrigerator, comprising:

[0034] An inner container;

[0035] and the fresh-keeping storage container as described above, which is arranged in the inner container.

[0036] The refrigerator, wherein the fresh-keeping storage container is configured as a drawer.

[0037] The refrigerator, wherein the inner container is one of a refrigeration inner container, a freezing inner container or a variable-temperature inner container.

[0038] Advantages of the application

[0039] In the technical scheme of the embodiment of the present application, the first main magnetic piece, the auxiliary magnetic piece and the second main magnetic piece are sequentially arranged on the storage box along the 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; thus, in the containing cavity, the magnetic induction lines pass from the first main magnetic piece to the second main magnetic piece (or from the second main magnetic piece to the first main magnetic piece), while outside the containing cavity, the magnetic induction lines pass from the second main magnetic piece to the first main magnetic piece (or from the first main magnetic piece to the second main magnetic piece); and the auxiliary magnetic piece is arranged between the two, which increases the magnetic field intensity of the first main magnetic piece and the second main magnetic piece in the containing cavity and reduces the magnetic field intensity of the first main magnetic piece and the second main magnetic piece outside the storage box, thereby reducing the magnetic field intensity of the magnetic piece outside the storage container, so as to reduce the intensity of the magnetic field interfering with the electronic devices; and the technical scheme of the embodiment of the present application can also improve the magnetic field intensity of the magnetic field in the containing cavity, thereby improving the preservation effect. BRIEF DESCRIPTION OF DRAWINGS

[0040] Fig. 1 is a structural schematic diagram of a preservation storage container provided by the embodiment of the present application;

[0041] Fig. 2 is a structural schematic diagram of a magnetic assembly provided by the embodiment of the present application;

[0042] Fig. 3 is a magnetic field distribution schematic diagram of a magnetic assembly provided by the embodiment of the present application;

[0043] Fig. 4 is a principle schematic diagram of improving the external magnetic field intensity of a magnetic assembly provided by the embodiment of the present application;

[0044] Fig. 5 is a structural schematic diagram of another magnetic assembly provided by the embodiment of the present application;

[0045] Fig. 6 is a structural schematic diagram of another magnetic assembly provided by the embodiment of the present application;

[0046] Fig. 7 is a schematic diagram of the change of the magnetic field intensity of the preservation storage container provided by the embodiment of the present application with the distance;

[0047] Fig. 8 is a comparison diagram of the change of the magnetic field intensity of the preservation storage container provided by the embodiment of the present application and the prior art with the distance;

[0048] Fig. 9 is a schematic diagram of the change of the magnetic field intensity of the preservation storage container provided by the embodiment of the present application with the number of main magnets.

[0049] Marked: 01, storage box; 02, magnetic assembly; 110, first main magnetic piece; 120, second main magnetic piece; 130, auxiliary magnetic piece. Embodiment of the present application

[0050] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0052] In the description of the present embodiment, the terms "up", "down", "right", and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0053] The magnetic field preservation is to use a weak magnetic field signal to change water molecules with magnetic resistance from disorder to order, thereby reducing biological metabolism, enzyme activity, etc., and realizing multiple preservation effects such as high water holding, oxidation resistance and bacteriostasis of food materials. The magnetic field has a certain diffusion, which will interfere with the electronic devices around it. In the prior art, a magnetic part (such as a permanent magnet or an electromagnet) is arranged in the refrigerator, and the magnetic field generated by the magnetic part exists not only in the refrigerator but also outside the refrigerator. The magnetic field outside the refrigerator will interfere with the electronic devices inside the refrigerator, reducing the reliability, accuracy or sensitivity of the electronic devices. Therefore, the present application provides a preservation storage container, which aims to reduce the magnetic field strength of the magnetic part outside the storage container, so as to reduce the interference of the magnetic field on the electronic devices inside the refrigerator.

[0054] Referring to FIGS. 1-3, the present application provides a preservation storage container, comprising:

[0055] The storage box 01 has a containing cavity;

[0056] The first main magnetic piece 110;

[0057] The auxiliary magnetic piece 130; and

[0058] The second main magnetic piece 120;

[0059] The first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 are sequentially arranged on the storage box 01 along the first direction of the storage box 01; wherein the magnetic poles of the first main magnetic piece 110 and the second main magnetic piece 120 face the accommodation cavity in opposite directions; the auxiliary magnetic piece 130 is used to increase the magnetic field strength of the first main magnetic piece 110 and the second main magnetic piece 120 in the accommodation cavity and reduce the magnetic field strength of the first main magnetic piece 110 and the second main magnetic piece 120 outside the storage box 01.

[0060] In the technical scheme of the embodiment, the first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 are sequentially arranged on the storage box 01 along the first direction of the storage box 01; the magnetic poles of the first main magnetic piece 110 and the second main magnetic piece 120 face the accommodation cavity in opposite directions; thus, in the accommodation cavity, the magnetic induction lines are from the first main magnetic piece 110 to the second main magnetic piece 120 (or from the second main magnetic piece 120 to the first main magnetic piece 110), and outside the accommodation cavity, the magnetic induction lines are from the second main magnetic piece 120 to the first main magnetic piece 110 (or from the first main magnetic piece 110 to the second main magnetic piece 120); and the auxiliary magnetic piece 130 is arranged between the two, which increases the magnetic field strength of the first main magnetic piece 110 and the second main magnetic piece 120 in the accommodation cavity and reduces the magnetic field strength of the first main magnetic piece 110 and the second main magnetic piece 120 outside the storage box 01, thereby reducing the magnetic field strength of the magnetic pieces outside the storage container, so as to reduce the strength of the magnetic field interfering with the electronic devices; and the technical scheme of the embodiment can also improve the magnetic field strength of the magnetic field in the accommodation cavity, thereby improving the preservation effect.

[0061] Referring to FIG. 4, the upper side of the magnetic assembly 02 composed of the first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 represents the inside of the accommodation cavity, and the lower side represents the outside of the storage box 01. On the upper side, the magnetic induction line direction of the first main magnetic piece 110 to the second main magnetic piece 120 is the same as that of the auxiliary magnetic piece 130, thereby increasing the magnetic field strength of the first main magnetic piece 110 and the second main magnetic piece 120 in the accommodation cavity; on the lower side, the magnetic induction line direction of the first main magnetic piece 110 to the second main magnetic piece 120 is opposite to that of the auxiliary magnetic piece 130, which offsets at least a part, thereby weakening the magnetic field strength of the first main magnetic piece 110 and the second main magnetic piece 120 outside the storage box 01.

[0062] In the technical scheme of the embodiment of the present application, the magnetic assembly composed of the first main magnetic piece, the auxiliary magnetic piece and the second main magnetic piece can be placed on each wall surface of the storage box. For the preservation of the refrigerator, food is more concentrated on the bottom, so it is usually arranged on the bottom of the storage box.

[0063] As shown in FIG. 7, the curve S2 represents the change of the magnetic induction intensity outside the fresh-keeping storage container with the distance from the storage box 01, and the curve S1 represents the change of the magnetic induction intensity inside the containing cavity with the distance from the storage box 01; the 0 point of the horizontal coordinate represents the position where the magnetic assembly 02 is arranged, and the two curves are asymmetric; at the same distance position, the magnetic induction intensity outside is significantly reduced, and the magnetic induction intensity inside is significantly increased.

[0064] As shown in FIG. 8, the magnetic induction intensity curves inside and outside the fresh-keeping box in the prior art technical scheme are symmetrical. After the technical scheme of the present application is adopted, the magnetic field intensity inside is significantly increased, and the magnetic field intensity outside is significantly reduced.

[0065] In the embodiment, the first direction can be the length direction / height direction / width direction of the storage fresh-keeping container. The storage fresh-keeping 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.

[0066] As an optional implementation manner of the above embodiment, the magnetic pole of the auxiliary magnetic piece 130 facing the first main magnetic piece 110 is the same as the magnetic pole of the first main magnetic piece 110 facing the containing cavity, and the magnetic pole of the auxiliary magnetic piece 130 facing the second main magnetic piece 120 is the same as the magnetic pole of the second main magnetic piece 120 facing the containing cavity. As shown in FIGS. 3 and 4, for example, the magnetic pole of the first main magnetic piece 110 facing the containing cavity is N pole, and the magnetic pole of the second main magnetic piece 120 facing the containing cavity is S pole, the magnetic pole of the auxiliary magnetic piece 130 facing the first main magnetic piece 110 is N pole, and the magnetic pole of the auxiliary magnetic piece 130 facing the second main magnetic piece 120 is S pole, so that the magnetic induction line direction of the first main magnetic piece 110 to the second main magnetic piece 120 is the same as the magnetic induction line direction of the auxiliary magnetic piece 130 on the upper side, and the magnetic field intensity of the first main magnetic piece 110 and the second main magnetic piece 120 in the containing cavity is increased; on the lower side, the magnetic induction line direction of the first main magnetic piece 110 to the second main magnetic piece 120 is opposite to the magnetic induction line direction of the auxiliary magnetic piece 130, at least part of which is offset, and the magnetic field intensity of the first main magnetic piece 110 and the second main magnetic piece 120 outside the storage box 01 is weakened.

[0067] As an optional implementation of the above embodiment, the width of the first main magnetic piece 110 is W1; the width of the second main magnetic piece 120 is W2; and the width of the auxiliary magnetic piece 130 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. In the embodiment, the width is the dimension of the first main magnetic piece 110, the second main magnetic piece 120 and the auxiliary magnetic piece 130 in the first direction. In the embodiment, the magnetic field strength in the accommodating cavity mainly depends on the magnetic circuit between the first main magnetic piece 110 and the second main magnetic piece 120, and the auxiliary magnetic piece 130 mainly enhances the magnetic field strength of the magnetic circuit and weakens the magnetic field strength of the external magnetic circuit. Moreover, 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, which is mainly to ensure that there is basically no magnetic flux between the auxiliary magnetic pieces 130.

[0068] In some embodiments, the width W1 of the first main magnetic piece 110 and the width W2 of the second main magnetic piece 120 are set to be consistent.

[0069] Therefore, in some embodiments, the width of the auxiliary magnetic piece 130 and the width of the first main magnetic piece 110 and the width of the second main magnetic piece 120 are set in proportion to ensure that there is basically no magnetic flux between the auxiliary magnetic pieces 130.

[0070] As an optional implementation of the above embodiment, the first main magnetic piece 110 and the second main magnetic piece 120 are arranged alternately along the first direction; and the auxiliary magnetic piece 130 is arranged between any two adjacent first main magnetic pieces 110 and second main magnetic pieces 120. Through this arrangement, the magnetic field strength near the internal area of the magnetic assembly 02 can be effectively enhanced and the interference of the magnetic field to the outside can be reduced.

[0071] As can be seen from FIG. 8, the magnetic induction intensity variation inside the accommodating cavity is:

[0072] a. When the distance from the magnetic assembly 02 is 0- ha and ha≥5cm, B3>B2>B1, which indicates that the magnetic field is mainly concentrated in the bottom space area inside the drawer; (BN in which N represents the number of main magnets, such as B3 represents the magnetic field strength of three main magnets.)

[0073] b. When the distance from the magnetic assembly 02 is ha-hb, B2>B3>B1, in this height range, the magnetic induction intensity generated by the two main magnets exceeds that of three main magnets, but the magnetic induction intensity is still higher than that of the single magnet scheme;

[0074] c. When the distance from the magnetic assembly 02 is in the range of hb ~ hc, B2 > B1 > B3, in this height range, the magnetic induction intensity of the single main magnet exceeds the three main magnets;

[0075] d When the distance from the magnetic assembly 02 is > hc, B1 > B2 > B3, in this height range, the magnetic induction intensity of the single main magnet is the strongest, exceeding the two and three main magnets, because the magnetic field direction of the single magnet is in a shooting shape, and the two and three main magnets are in a gathering shape, so the magnetic field of the combined design of the two and three main magnets is mainly concentrated at the bottom, and the magnetic field of the single magnet is dispersed in the drawer space; this can effectively preserve the food materials gathered at the bottom of the containing cavity.

[0076] (2) The variation law of the magnetic induction intensity outside the drawer is:

[0077] B3 < B2 < B1, wherein the combined design scheme of the three magnets has a magnetic induction intensity < B limit (0.5 mT) at hd (≤2 cm), indicating that the combined design effectively reduces the magnetic induction intensity outside the containing cavity, avoiding damage to other components outside the storage box 01 by the magnetic field.

[0078] From the above variation law, compared with the traditional single magnet, the technical scheme provided by the embodiment of the application can effectively improve the magnetic induction intensity inside the containing cavity, weaken the magnetic induction intensity outside the containing cavity, solve the problem of low utilization efficiency of the traditional single magnet magnetic field line diffusion outside, and the leakage of the magnetic field will affect other components outside the containing cavity, realize the increase of the magnetic induction intensity inside the containing cavity and the weakening of the magnetic induction intensity outside the containing cavity, and effectively act on the food materials, thereby improving the preservation effect of the food materials. Compared with the prior art, the technical scheme of the application has the following technical advantages:

[0079] (1) The combined design has the magnetic self-shielding characteristic, can form single-sided enhancement, and has the magnetic self-shielding characteristic on the opposite side, thereby realizing the increase of the intensity inside the containing cavity and the weakening of the outside.

[0080] (2) The high magnetic field intensity inside the containing cavity space is realized, and the magnetic field utilization efficiency is high, compared with the same volume of permanent magnet, the magnetic field is enhanced;

[0081] (3) The magnetic leakage is reduced, and it can be unnecessary to shield with a magnetic conductive or shielding material.

[0082] As an optional implementation manner of the above embodiment, the number of the first main magnetic piece 110 and the second main magnetic piece 120 is N in total, wherein the value range of N is 3 to 8. Referring to FIG. 9, the variation curve of the magnetic induction intensity inside and outside the containing cavity with the number N of the main magnet.

[0083] a. Wherein B effective represents the magnetic induction intensity that the magnetic field inside the containing cavity can act on, and it is required to satisfy that B effective ≥ 2mT at the height h (at least 5cm). S11 represents the curve of the change of the magnetic induction intensity inside the containing cavity with the number of the main magnets. The magnetic induction intensity at the height h inside the containing cavity presents a trend of first rising and then falling with the increase of the number of the main magnets;

[0084] b. Wherein B limit represents the limiting value of the magnetic field outside the containing cavity to prevent leakage of the magnetic field from causing damage to other components outside the containing cavity. It is required to satisfy that B limit ≤ 0.5mT at the height h' (at most 2cm) outside the containing cavity. S22 represents the curve of the change of the magnetic induction intensity outside the containing cavity with the number of the main magnets. The magnetic induction intensity at the height h' outside the containing cavity presents a trend of first falling and then rising with the increase of the number of the main magnets;

[0085] c. Therefore, in order to ensure the preservation effect of the magnetic field on the food materials and avoid leakage of the magnetic field, the number of the main magnets is preferably 3-8, because when the number of the main magnets (N) is < 3, the bottom magnetic induction intensity is > 0.5mT, the shielding effect is limited, and the magnetic lines spread to the space, causing other components outside the containing cavity to be affected; when the number of the magnetic sheets is > 8, the magnetic shielding effect outside the containing cavity is weakened, and exceeds the limit.

[0086] Therefore, in some technical solutions of the embodiments of the present application, the number of the first main magnetic piece 110 and the second main magnetic piece 120 is N in total, wherein the value range of N is 3-8. Correspondingly, the number of the auxiliary magnetic piece 130 is N-1.

[0087] As an optional implementation manner of the above-mentioned embodiments, the first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 are sequentially arranged at the bottom of the storage box 01 along the first direction of the storage box 01. In the embodiments, the food materials are more gathered at the bottom of the storage box 01, and therefore the first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 are sequentially arranged at the bottom of the storage box 01 along the first direction of the storage box 01. As can be seen from FIG. 7, the magnetic field intensity gradually weakens from the bottom, and is stronger at the bottom, which is beneficial to the preservation effect of the food materials.

[0088] As an optional implementation of the above embodiment, the first main magnetic member 110 comprises a permanent magnet and / or a first coil; and / or the second main magnetic member 120 is a permanent magnet and / or comprises a second coil; and / or the auxiliary magnetic member 130 is a permanent magnet and / or comprises a third coil. In embodiments, the permanent magnet can be a rare earth permanent magnet (neodymium iron boron, samarium cobalt, etc.), a metal permanent magnet (Al NiCo, etc.), a ferrite permanent magnet, a rubber magnet, etc. Based on cost and manufacturability, a rubber magnet is preferred, which is a magnet formed by compounding ferrite magnetic powder and synthetic rubber and then being molded by a process to have certain softness and elasticity. In embodiments, the principle of electro-magnetism can also be used, i.e., a metal coil, preferably a copper coil or a copper-coated aluminum coil, is energized to generate a magnetic field in the same direction.

[0089] In some embodiments, the first main magnetic member 110 is a permanent magnet; the second main magnetic member 120 is a permanent magnet; and the auxiliary magnetic member 130 comprises a third coil. By passing different currents through the third coil, the adjustment of the internal magnetic field intensity enhancement amplitude and the external magnetic field intensity weakening amplitude can be realized.

[0090] In some embodiments, the first main magnetic member 110 comprises a first coil; the second main magnetic member 120 comprises a second coil; and the auxiliary magnetic member 130 is a permanent magnet. By passing different currents through the first coil and the second coil, the internal magnetic field intensity and the weakening magnetic field intensity can be adjusted while the auxiliary magnetic member 130 increases the internal magnetic field intensity and weakens the external magnetic field intensity.

[0091] The above embodiments can be specifically set according to specific application scenarios (such as refrigeration, freezing or temperature change). As an optional implementation of the above embodiment, the magnetic induction intensity of the first main magnetic member 110, the auxiliary magnetic member 130 and the second main magnetic member 120 at a first preset distance outside the fresh-keeping storage container is less than or equal to 0.5 mT. Referring to FIG. 7, the curve S2 of the magnetic induction intensity outside the fresh-keeping storage container with respect to the distance from the storage box 01. As observed from the curve S2, the first preset distance is h', at which the magnetic induction intensity of the first main magnetic member 110, the auxiliary magnetic member 130 and the second main magnetic member 120 is less than or equal to 0.5 mT, so that the magnetic induction intensity at a position greater than h' is less than 0.5 mT; thus, the range of the external high magnetic field intensity of the magnetic assembly 02 is significantly reduced, which is conducive to saving the space of the refrigerator.

[0092] In embodiments, the first preset distance can be 2 mm, 1.5 mm or 2.5 mm.

[0093] As an optional implementation of the above embodiment, the magnetic induction intensity of the first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 at the second preset distance from the storage box 01 in the accommodation cavity is greater than or equal to 2 mT. Referring to FIG. 7, the magnetic induction intensity in the accommodation cavity changes with the distance from the storage box 01, and the curve is S1. As observed from the change curve S1, the second preset distance is h, and the magnetic induction intensity of the first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 at the position h is greater than or equal to 2 mT. Therefore, the magnetic induction intensity at positions less than h is greater than 2 mT, thereby effectively prolonging the storage time of the food materials.

[0094] In the embodiment, the first main magnetic piece 110, the auxiliary magnetic piece 130 and the second main magnetic piece 120 are arranged at the bottom, and the magnetic induction intensity at the second preset distance (preset height) from the storage box 01 in the accommodation cavity is greater than or equal to 2 mT. Therefore, the magnetic induction intensity at positions less than h is greater than 2 mT. The food materials are more concentrated at the bottom when stored, thereby effectively prolonging the storage time of the food materials.

[0095] In the embodiment, the second preset distance is 5 mm, 4.5 mm or 6 mm.

[0096] The application also provides a refrigerator, which comprises an inner container and a fresh-keeping storage container arranged in the inner container. The fresh-keeping storage container adopts some or all of the technical solutions of the above embodiments, so that the refrigerator has the technical effects of the above embodiments. In the embodiment, the inner container can be a refrigeration inner container, a freezing inner container or a variable-temperature inner container. The fresh-keeping storage container can be configured in the form of a drawer.

Claims

1. A fresh-keeping storage container, wherein, 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 on 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; 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.

2. The crisper storage container of claim 1, wherein, Inside the receiving cavity, the direction of the magnetic field lines from the first main magnetic element to the second main magnetic element is the same as the direction of the magnetic field lines of the secondary magnetic element; outside the storage box, the direction of the magnetic field lines from the first main magnetic element to the second main magnetic element is opposite to the direction of the magnetic field lines of the secondary magnetic element.

3. The fresh-keeping storage container of claim 1, wherein, 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 poles of the secondary magnetic component facing the second primary magnetic component are the same as the magnetic poles of the second primary magnetic component facing the receiving cavity.

4. The crisper storage container of claim 3, wherein, 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.

5. The fresh-keeping storage container of claim 4, wherein, The width W1 of the first main magnetic component is equal to the width W2 of the second main magnetic component.

6. The crisper storage container of any one of claims 1 to 5, wherein, 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.

7. The fresh-keeping storage container of any one of claims 1 to 5, wherein, 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.

8. The crisper storage container of any one of claims 1 to 5, wherein, The first main magnetic component, the secondary magnetic component, and the second main magnetic component are sequentially arranged at the bottom of the storage box along the first direction of the storage box.

9. The fresh-keeping storage container of any one of claims 1 to 5, wherein, 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.

10. The crisper storage container of any one of claims 1 to 5, wherein, The first main magnetic component is a permanent magnet, the second main magnetic component is a permanent magnet, and the secondary magnetic component is a third coil.

11. The fresh-keeping storage container of claim 10, wherein, The current in the third coil is configured to be adjustable.

12. The fresh-keeping storage container of any one of claims 1 to 5, wherein, The first main magnetic component is the first coil, the second main magnetic component is the second coil, and the secondary magnetic component is a permanent magnet.

13. The fresh-keeping storage container of claim 12, wherein, The current magnitudes of the first and second coils are configured to be adjustable.

14. The fresh-keeping storage container of any one of claims 1 to 5, wherein, 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.

15. The fresh-keeping storage container of claim 14, wherein, The first preset distance is 2mm, 1.5mm or 2.5mm.

16. The fresh-keeping storage container of any one of claims 1 to 5, wherein, 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.

17. The fresh-keeping storage container of claim 16, wherein, The second preset distance is 5mm, 4.5mm or 6mm.

18. A refrigerator, wherein, include: Inner liner; and a fresh-keeping storage container according to any one of claims 1 to 17 is arranged in the inner container.

19. The refrigerator of claim 18, wherein, The fresh-keeping storage container is configured as a drawer.

20. The refrigerator of claim 18 or 19, wherein, The inner container is one of a refrigeration inner container, a freezing inner container, or a variable-temperature inner container.

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