WO2023016079A1

WO2023016079A1 - Magnetic field freshness-preservation device, and refrigeration apparatus

Info

Publication number: WO2023016079A1
Application number: PCT/CN2022/098435
Authority: WO
Inventors: 衣尧; 李孟成; 尹静轩; 刘浩泉
Original assignee: 青岛海尔电冰箱有限公司; 海尔智家股份有限公司
Priority date: 2021-08-11
Filing date: 2022-06-13
Publication date: 2023-02-16
Also published as: CN115704639A

Abstract

A magnetic field freshness-preservation device, which is applied to a refrigeration apparatus. The magnetic field freshness-preservation device comprises a storage assembly (210), a magnet assembly (220) and a magnetic conductive assembly (230). A storage space (2101) is defined in the storage assembly (210). The magnet assembly (220) comprises a first magnet (211) and a second magnet (212), wherein the first magnet (211) and the second magnet (212) are respectively arranged on opposite sides of the storage space (2101). The magnetic conductive assembly (230) comprises a first magnetic conductive member (231) corresponding to the first magnet (211), and a second magnetic conductive member (232) corresponding to the second magnet (212), wherein the first magnetic conductive member (231) and the second magnetic conductive member (232) are used for assisting the first magnet (211) and the second magnet (212) in forming a magnetic field with a uniform strength in the storage space (2101). The magnet assembly (220) and the magnetic conductive assembly (230) are configured in such a way that a magnetic induction intensity in the storage space (2101) has a pre-set value, and the pre-set value is in the range of 1 mT to 10 mT. The device improves a utilization rate of the magnetic field, and optimizes the freshness preservation effect of stored goods, thereby improving usage experience of refrigerators, particularly smart refrigerators.

Description

Magnetic field preservation device and refrigeration equipment

technical field

The invention belongs to the technical field of refrigeration and freezing preservation, and specifically provides a magnetic field preservation device and refrigeration equipment.

Background technique

Theoretical studies have found that the magnetic field has a great influence on the formation of ice crystals during the freezing process, which can reduce the freezing temperature of food materials.

In order to achieve the purpose of keeping the ingredients fresh at low temperature without freezing, some manufacturers now configure magnets for refrigeration equipment (such as refrigerators), so as to provide magnetic fields for the ingredients in the refrigeration equipment through the magnets.

However, if the strength of the magnetic field is too large or too small, it will affect the preservation effect of the ingredients, and even have an adverse effect on the preservation of the ingredients.

Contents of the invention

An object of the present invention is to provide a magnetic field fresh-keeping device and refrigeration equipment with a moderate magnetic field strength to improve the fresh-keeping effect of food materials.

Another object of the present invention is to provide a magnetic field with uniform strength for the storage space.

In order to achieve the above object, the present invention provides a magnetic field fresh-keeping device, the magnetic field fresh-keeping device is applied to refrigeration equipment, and the magnetic field fresh-keeping device includes:

The storage component defines a storage space inside;

a magnet assembly, which includes a first magnet and a second magnet, the first magnet and the second magnet are respectively arranged on opposite sides of the storage space;

A magnetically permeable component, which includes a first magnetically permeable member corresponding to the first magnet and a second magnetically permeable member corresponding to the second magnet, the first magnetically permeable member and the second magnetically permeable member a component for assisting the first magnet and the second magnet to form a magnetic field with uniform strength in the storage space;

Wherein, the magnet assembly and the magnetic conduction assembly are configured such that the magnetic induction in the storage space is a preset value, and the preset value ranges from 1 mT to 10 mT.

Optionally, the preset value ranges from 1mT to 5mT.

Optionally, the magnetically permeable assembly further includes a magnetically permeable connector connecting the first magnetically permeable member and the second magnetically permeable member together, the first magnetically permeable member, the second magnetically permeable member The component and the magnetically conductive connector jointly form a magnetically conductive circuit.

Optionally, both the first magnet and the second magnet are electromagnetic coils; the magnetic field preservation device further includes a magnetic induction detector, and the magnetic induction detector is used to detect the magnetic induction of the magnetic field in the storage space , so as to adjust the magnitude of the current flowing through the first magnet and/or the second magnet according to the detected magnetic induction.

Optionally, the magnetic induction detector is disposed on a side of the storage space adjacent to the first magnet.

Optionally, the magnetic field preservation device includes a plurality of magnetic induction detectors, and the plurality of magnetic induction detectors are distributed at intervals along a direction in which the first magnet approaches the second magnet.

Optionally, the projection of the storage space on the extended surface of the first magnet is located inside the outer contour of the first magnet; the projection of the storage space on the extended surface of the second magnet is located at The inner side of the outer contour of the second magnet.

Optionally, the storage unit includes:

A drawer fixing component, the magnet component and the magnetic conduction component are both arranged on the drawer fixing component;

A drawer is slidably mounted to the drawer fixing assembly, and the storage space is formed in the drawer.

Optionally, the drawer fixing assembly includes a drawer receiver, and an opening is formed at a front end of the drawer receiver to allow the drawer to slide in/out.

Optionally, the first magnet is a permanent magnet or a combination of a permanent magnet and an electromagnetic coil, and the second magnet is a permanent magnet or a combination of a permanent magnet and an electromagnetic coil.

In order to achieve the above object, the present invention also provides a refrigeration device, including the magnetic field fresh-keeping device described in any one of the foregoing technical solutions.

Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solutions of the present invention, by setting the first magnetic-conductive member corresponding to the first magnet, the second magnetic-conductive member corresponding to the second magnet is provided. Components, so that the first magnet and the second magnet can form a magnetic field with uniform strength in the storage space through the first magnetic conductive member and the second magnetic conductive member, so that the strength of the magnetic field in each part of the storage space is equal, and then the storage space All parts of the stored objects in the space are subjected to the magnetic field of the same strength, so that all parts of the stored objects can obtain the same fresh-keeping effect.

Further, by setting the magnetic induction intensity in the storage space to a preset value, and limiting the range of the preset value to 1mT to 10mT, the stored objects in the storage space can be in an excellent fresh-keeping environment, The preservation effect of the stored objects has been improved.

Further, the first magnet and the second magnet are connected together through the magnetically conductive connector, so that the first magnet, the second magnet and the magnetically conductive connector can form a magnetically conductive circuit, and the magnetic field scattered outside the storage space from the magnet assembly Effective confinement and restraint are carried out, so that the magnetic field generated by the magnet assembly can almost completely act on the storage space, thereby improving the utilization rate of the magnetic field.

Still further, the magnetic induction intensity detector detects the magnetic induction intensity of the magnetic field in the storage space, and adjusts the magnitude of the current flowing through the first magnet and/or the second magnet according to the detected magnetic induction intensity, thereby changing the magnetic field in the storage space The size of the strength at least avoids the reduction of the magnetic field strength in the storage space due to changes in the performance of the magnet component and the magnetic permeable component during long-term use (such as the attenuation of the electromagnetic performance and/or magnetic permeation performance), Affect the storage effect of the stored object.

Furthermore, by distributing a plurality of magnetic induction intensity detectors at intervals along the direction in which the first magnet approaches the second magnet, each part in the storage space can also have a magnetic field with a better strength when the stored object has magnetic isolation performance, Guaranteed the preservation effect of the stored objects.

In addition, the present invention sets the first magnet as a permanent magnet or a combination of a permanent magnet and an electromagnetic coil, and sets the second magnet as a permanent magnet or a combination of a permanent magnet and an electromagnetic coil, especially the first magnet and the second magnet. Being set as a permanent magnet, the magnet assembly can continuously generate a magnetic field acting on the stored object, while reducing the energy consumption of the refrigeration equipment.

Furthermore, the technical solution of the present invention improves the storage quality of the refrigerator by forming a magnetic field in the refrigerator, and can provide a new fresh-keeping function for the smart refrigerator, which meets the increasing demand of users for smart refrigerators and further improves the storage quality of the refrigerator. The quality of smart home and smart life.

Those skilled in the art will be more aware of the above and other objects, advantages and features of the present invention according to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the components or parts indicated by the same reference number in different drawings are the same or similar; the drawings of the present invention are not necessarily drawn to scale. In the attached picture:

Fig. 1 is the schematic diagram of the effect of refrigeration equipment in some embodiments of the present invention;

Fig. 2 is the schematic diagram of the effect of the magnetic field preservation device in some embodiments of the present invention;

Fig. 3 is an axonometric view of the magnet assembly and the magnetic conduction assembly in Fig. 2;

Fig. 4 is the upper front axonometric view of the magnetic field preservation device in some embodiments of the present invention;

Fig. 5 is a front and bottom perspective view of the magnetic field preservation device in some embodiments of the present invention;

Fig. 6 is an isometric side sectional view of the magnetic field preservation device in Fig. 4;

Fig. 7 is a relationship diagram between the magnetic field strength of the food material and TVB-N in some experiments of the present invention;

Fig. 8 is a relationship diagram between the magnetic field strength of the food material and the juice loss rate in some experiments of the present invention;

Fig. 9 is a relationship diagram between the magnetic field strength of the food and the freezing rate of the food in some experiments of the present invention;

Fig. 10 is a relationship diagram between the magnetic field strength of the food material and the juice loss rate in other experiments of the present invention;

Fig. 11 is a schematic diagram of the effect of the magnetic induction intensity detector on the magnetic field preservation device in some embodiments of the present invention.

Detailed ways

It should be understood by those skilled in the art that the embodiments described below are only some of the embodiments of the present invention, rather than all embodiments of the present invention. To limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts should still fall within the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", " Terms indicating directions or positional relationships such as "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, in order to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, or it may be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Fig. 1 is a schematic diagram of the effect of refrigeration equipment in some embodiments of the present invention. The refrigeration equipment includes a box body 100 and a magnetic field fresh keeping device 200 . Among them, the magnetic field fresh-keeping device 200 is installed on the box body 100, and is used for cold storage and fresh-keeping of stored items (including food materials, medicines, drinks, biological reagents, colonies, chemical reagents, etc.).

Further, although not shown in the figure, a freezer compartment and/or a refrigerator compartment and/or a temperature-changing compartment are formed in the box body 100 , and a magnetic field fresh-keeping device 200 is arranged in the freezer compartment and/or the refrigerator compartment and/or the temperature-changing compartment.

In the present invention, the refrigeration equipment includes a refrigerator, a freezer and a freezer, and the refrigeration equipment may be an air-cooled refrigeration equipment or a direct-cool refrigeration equipment.

Fig. 2 is a schematic diagram of the effect of the magnetic field preservation device in some embodiments of the present invention; Fig. 3 is an axonometric view of the magnet assembly and the magnetic conduction assembly in Fig. 2 .

As shown in FIGS. 2 and 3 , in some embodiments of the present invention, the magnetic field preservation device 200 includes a storage assembly 210 , a magnet assembly 220 and a magnetic conduction assembly 230 . A storage space 2101 is defined in the storage assembly 210 . Optionally, the magnet assembly 220 and the magnetic conduction assembly 230 are respectively fixed on the storage assembly 210 . Further optionally, both the magnet assembly 220 and the magnetic conduction assembly 230 are disposed outside the storage space 2101 to avoid occupying the storage space 2101 . Alternatively, those skilled in the art may also arrange the magnet assembly 220 and/or the magnetic conduction assembly 230 in the storage space 2101 as required.

Continuing to refer to FIG. 2 and FIG. 3 , the magnet assembly 220 includes a first magnet 221 and a second magnet 222 , and the first magnet 221 and the second magnet 222 are respectively disposed on opposite sides of the storage space 2101 . Preferably, the first magnet 221 and the second magnet 222 are arranged on opposite sides in the thickness direction of the storage space 2101 . As shown in FIG. 2 , the first magnet 221 and the second magnet 222 are respectively disposed on the top side and the bottom side of the storage space 2101 . In addition, those skilled in the art can also arrange the first magnet 221 and the second magnet 222 on opposite sides in the length direction or width direction of the storage space 2101 respectively according to needs, for example, the first magnet 221 and the second magnet 222 They are arranged on the left and right sides or the front and back sides of the storage space 2101 respectively. Those skilled in the art can understand that the first magnet 221 and the second magnet 222 are used to generate a magnetic field acting on the storage space 2101 .

Preferably, the projection of the storage space 2101 on the extended surface of the first magnet 221 is located inside the outer contour of the first magnet 221; the projection of the storage space 2101 on the extended surface of the second magnet 222 is located on the outer contour of the second magnet 222 so that every part in the storage space 2101 has a magnetic field.

Further preferably, both the first magnet 221 and the second magnet 222 are electromagnetic coils, so as to adjust the first magnet 221 and the second magnet 222 by controlling the magnitude of the current flowing through the first magnet 221 and/or the second magnet 222 The strength of the magnetic field produced. Of course, those skilled in the art can also configure the first magnet 221 and/or the second magnet 222 as a permanent magnet or a combination of a permanent magnet and an electromagnetic coil as required.

Continuing to refer to FIG. 2 and FIG. 3 , the magnetically permeable assembly 230 includes a first magnetically permeable member 231 corresponding to the first magnet 221 and a second magnetically permeable member 232 corresponding to the second magnet 222 .

Those skilled in the art can understand that, since the first magnetically conductive member 231 and the second magnetically conductive member 232 can confine the magnetic field lines generated by the first magnet 221 and the second magnetic body 222, and make the magnetic field lines The members 231 and the second magnetically conductive member 232 are evenly distributed, so the first magnetically conductive member 231 and the second magnetically conductive member 232 can not only reduce the magnetic field scattered from the first magnet 221 and the second magnet 222 to the outside of the storage space 2101 , and can also assist the first magnet 221 and the second magnet 222 to form a magnetic field with uniform strength in the storage space 2101 .

Those skilled in the art can also understand that the magnetic field with uniform strength in the storage space 2101 can make the stored objects in each area in the storage space receive the same magnetic field effect, so that the stored objects in each area in the storage space 2101 have Same preservation effect.

Continuing to refer to FIG. 2 and FIG. 3 , the magnetically permeable assembly 230 also includes a magnetically permeable connector 233 connecting the first magnetically permeable member 231 and the second magnetically permeable member 232 together. The first magnetically permeable member 231 and the second magnetically permeable member 232 and the magnetically conductive connector 233 together form a magnetically conductive circuit. The magnetic circuit can effectively confine and suppress the magnetic field scattered from the magnet assembly 220 to the outside of the storage space 2101, so that almost all the magnetic field generated by the magnet assembly 220 can act on the storage space 2101, thereby improving the magnetic field. utilization rate.

In the present invention, the first magnetically permeable member 231, the second magnetically permeable member 232 and the magnetically permeable connector 233 can be made of any feasible material, such as silicon steel, 45 permalloy, 78 permalloy, super permalloy wait.

The structure of the storage assembly 210 of the present invention will be described in detail below with reference to FIGS. 4 to 6 . Wherein, Fig. 4 is a front upper axonometric view of a magnetic field preservation device in some embodiments of the present invention; Fig. 5 is a front and lower axonometric view of a magnetic field preservation device in some embodiments of the present invention; Fig. 6 is a front and lower axonometric view of a magnetic field preservation device in Fig. 4 Isometric cutaway view.

As shown in FIGS. 4 to 6 , in some embodiments of the present invention, the storage assembly 210 includes a drawer fixing assembly 211 and a drawer 212 . Wherein, the drawer fixing assembly 211 is used for installing and fixing the magnet assembly 220 and the magnetic conduction assembly 230 ; A drawer 212 is slidably installed in the drawer fixing assembly 211 , and a storage space 2101 is formed in the drawer 212 .

Continuing to refer to FIG. 4 to FIG. 6 , the drawer fixing assembly 211 includes a drawer receiver 2111 , and an opening 21111 for allowing the drawer 212 to slide in/out is formed at the front end of the drawer receiver 2111 . Specifically, the drawer container 2111 includes a top sidewall, a bottom sidewall, a left sidewall, a right sidewall and a rear sidewall.

Further, both the magnet assembly 220 and the magnetic conduction assembly 230 are disposed outside the drawer receiver 2111 .

Still further, although not marked in the figure, the drawer fixing assembly 211 also includes a structure for fixing the magnet assembly 220 and the magnetic conduction assembly 230 , such as fixing plates arranged on the top side and the bottom side of the drawer receiver 2111 .

Referring to FIG. 7 to FIG. 10 , the intensity of the magnetic field generated by the magnet assembly 220 and the magnetic conduction assembly 230 in the present invention will be described in detail. Wherein, Fig. 7 is a relationship diagram between the magnetic field strength of the food material and TVB-N in some experiments of the present invention; Fig. 8 is a relationship diagram between the magnetic field strength of the food material and the juice loss rate in some experiments of the present invention; Fig. 9 is a relationship diagram of some experiments of the present invention The relationship diagram between the magnetic field strength of the food and the freezing rate of the food in the experiment; FIG. 10 is the relationship diagram between the magnetic field strength of the food and the juice loss rate in other experiments of the present invention.

In the present invention, the magnet assembly 220 and the magnetic conduction assembly 230 are configured such that the magnetic induction in the storage space 2101 is a preset value, and the range of the preset value is 1 mT to 10 mT. For example, the preset value may be 1mT, 4mT, 5mT, 6.5mT, 7.8mT, 10mT and so on.

Among them, 1000mT=1T, and T is a physical quantity used to represent the magnetic induction intensity—Tesla.

As shown in Figure 7, in some experiments of the present invention, salmon were placed in a uniform magnetic field of 0-12mT, stored for 10 days, and then the TVB-N value after storage was evaluated. Among them, TVB-N is one of the most important evaluation indicators for evaluating the quality of meat salmon. It mainly represents the degree of protein spoilage in salmon. The national standard stipulates that the limit of TVB-N for fresh livestock products is 12mg/100g.

It can be seen from Figure 7 that the TVB-N value of salmon stored under a magnetic field strength of 1-10mT is less than 12mg/100g after 10 days, and the degree of protein spoilage in salmon is relatively low.

As shown in Figure 8, in some experiments of the present invention, the beef was placed in a uniform magnetic field of -4°C and 0-12mT, stored for 10 days, and then the juice loss rate value after storage was evaluated.

It can be seen from Fig. 8 that the juice loss rate of the beef stored under the magnetic field strength of 1-10mT is less than 6% after 10 days, and the others are all greater than 6%. This is mainly because the beef will freeze at -4°C at a magnetic field strength other than 1-10mT, so the juice loss rate is large; but the beef is not frozen at a magnetic field strength of 1-10mT, so the juice loss rate is small.

It can be seen that providing a magnetic field with a strength of 1-10 mT for the stored objects in the storage space 2101 is beneficial to the preservation of the stored objects, and improves the freshness preservation performance of the magnetic field fresh-keeping device 200 and the refrigeration equipment for food materials.

As shown in Figure 9, in some experiments of the present invention, 500g beef tenderloin is placed in the uniform intensity magnetic field of 0-8mT, applies identical cooling capacity then. Then the time for the beef tenderloin to cool down from 0°C to -5°C under different magnetic field strengths was obtained.

It can be seen from Fig. 9 that the cooling time of the beef tenderloin from 0°C to -5°C under the magnetic field strength of 1-5mT is less than 70min. The cooling time of beef tenderloin in an environment without a magnetic field is 85 minutes. It can be seen that the magnetic field strength of 1-5mT can significantly increase the freezing speed of food.

As shown in Figure 10, in some experiments of the present invention, the beef was placed in a uniform magnetic field of -18°C and 0-8mT, stored for 10 days, and then the juice loss rate after storage was evaluated.

It is not difficult to see from Figure 10 that under the magnetic field strength of 1-5mT, the juice loss rate of beef is less than 4% after 10 days; while in the conventional environment without magnetic field, the juice loss rate of beef is 4.7%. This is mainly because the magnetic field at a strength of 1-5mT can make ice crystals smaller and more uniform, thereby reducing the juice loss rate of ingredients.

Therefore, in a further preferred solution of the present invention, the preset value further ranges from 1 mT to 5 mT.

As shown in FIG. 11 , in some embodiments of the present invention, the magnetic field preservation device 200 further includes a magnetic induction detector 240, which is used to detect the magnetic induction of the magnetic field in the storage space 2101, so as to The magnitude of the current flowing through the first magnet 211 and/or the second magnet 212 is adjusted by adjusting the magnetic induction.

Wherein, both the first magnet 211 and the second magnet 212 are electromagnetic coils.

Wherein, the magnetic induction intensity detector 240 may be any feasible device, such as a Hall sensor.

Optionally, the magnetic induction detector 240 is disposed on a side of the storage space 2101 adjacent to the first magnet 221 . For example, the magnetic induction detector 240 is disposed on the left side wall, the right side wall or the rear side wall of the storage space 2101 shown in FIG. 2 .

Further optionally, the magnetic field preservation device 200 includes a plurality of magnetic induction detectors 240, and the plurality of magnetic induction detectors 240 are distributed at intervals along the direction in which the first magnet 221 approaches the second magnet 222, so that when the first magnet 221 approaches the second magnet, In the direction of the magnet 222, measure the magnetic field strength at multiple positions in the storage space 2101, so that each part in the storage space 2101 can also have a magnetic field with a better strength when the stored object has magnetic isolation performance, ensuring that the stored Fresh-keeping effect of food.

For example, if there is no object to be stored, the magnetic field strength of each part in the storage space 2101 is 3mT. When the storage space 2101 is filled with storage objects, the magnetic field strength in the middle area of the storage space 2101 is blocked by the storage objects and is reduced to 0.5mT. In order to make the stored items in each part of the storage space 2101 have a better fresh-keeping effect, the magnitude of the current entering the first magnet 221 and the second magnet 222 is increased until the magnetic field strength of each part in the storage space 2101 is not less than 1mT and not greater than 5mT.

Based on the foregoing description, those skilled in the art can understand that by setting the magnetic induction intensity in the storage space 2101 to a preset value and limiting the value range of the preset value to 1mT to 10mT, the storage space 2101 The stored objects inside can be in an excellent fresh-keeping environment, which improves the fresh-keeping effect of the stored objects. And by making a plurality of magnetic induction intensity detectors 240 distributed at intervals along the direction in which the first magnet 221 approaches the second magnet 222, each part in the storage space 2101 can also have better strength when the stored object has magnetic isolation performance. The magnetic field ensures the preservation effect of the stored objects.

So far, the technical solutions of the present invention have been described in conjunction with the foregoing embodiments. However, those skilled in the art can easily understand that the protection scope of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the concept and/or technical principles will fall within the protection scope of the present invention.

Claims

A magnetic field fresh-keeping device, which is applied to refrigeration equipment, the magnetic field fresh-keeping device includes:

The storage component defines a storage space inside;

a magnet assembly, which includes a first magnet and a second magnet, the first magnet and the second magnet are respectively arranged on opposite sides of the storage space;

A magnetically permeable component, which includes a first magnetically permeable member corresponding to the first magnet and a second magnetically permeable member corresponding to the second magnet, the first magnetically permeable member and the second magnetically permeable member a component for assisting the first magnet and the second magnet to form a magnetic field with uniform strength in the storage space;

Wherein, the magnet assembly and the magnetic conduction assembly are configured such that the magnetic induction in the storage space is a preset value, and the preset value ranges from 1 mT to 10 mT.
The magnetic field fresh keeping device according to claim 1, wherein,

The value range of the preset value is 1mT to 5mT.
The magnetic field fresh keeping device according to claim 1, wherein,

The magnetically permeable assembly also includes a magnetically permeable connector connecting the first magnetically permeable member and the second magnetically permeable member together, the first magnetically permeable member, the second magnetically permeable member and the The magnetically conductive connectors jointly form a magnetically conductive circuit.
The magnetic field fresh keeping device according to claim 1, wherein,

Both the first magnet and the second magnet are electromagnetic coils;

The magnetic field preservation device also includes a magnetic induction detector, which is used to detect the magnetic induction of the magnetic field in the storage space, so as to adjust the flow through the first magnet and the magnetic field according to the detected magnetic induction. /or the magnitude of the current of the second magnet.
The magnetic field preservation device according to claim 4, wherein,

The magnetic field preservation device includes a plurality of magnetic induction detectors, and the plurality of magnetic induction detectors are distributed at intervals along a direction in which the first magnet approaches the second magnet.
The magnetic field preservation device according to any one of claims 1-5, wherein,

The projection of the storage space on the extended surface of the first magnet is located inside the outer contour of the first magnet;

The projection of the storage space on the extension surface of the second magnet is located inside the outer contour of the second magnet.
The magnetic field preservation device according to any one of claims 1-5, wherein,

The storage components include:

A drawer fixing component, the magnet component and the magnetic conduction component are both arranged on the drawer fixing component;

A drawer is slidably mounted to the drawer fixing assembly, and the storage space is formed in the drawer.
The magnetic field preservation device according to claim 7, wherein,

The drawer fixing assembly includes a drawer receiver whose front end is formed with an opening allowing the drawer to slide in/out.
The magnetic field preservation device according to any one of claims 1-3, wherein,

The first magnet is a permanent magnet or a combination of a permanent magnet and an electromagnetic coil,

The second magnet is a permanent magnet or a combination of a permanent magnet and an electromagnetic coil.
A refrigeration device, comprising the magnetic field fresh-keeping device according to any one of claims 1-9.