WO2023016148A1 - Refrigeration equipment having magnetic field fresh-keeping function - Google Patents

Abstract

Refrigeration equipment (100) having a magnetic field fresh-keeping function, aiming to solve the problem that heat generated by a magnetic field generation device of existing refrigeration equipment (100) affects freezing and fresh keeping of food materials. The refrigeration equipment (100) comprises an equipment body, a refrigeration system (20) attached to the equipment body, and a magnetic field fresh-keeping device (30) arranged on the equipment body. The magnetic field fresh-keeping device comprises a storage space (31), a first electromagnetic coil (32), and a second electromagnetic coil (33). The storage space (31) is provided with a first air inlet (311) and a first air outlet (312). The first electromagnetic coil (31) and the second electromagnetic coil (32) are oppositely arranged on two opposite sides of the exterior of the storage space (31), and the two are configured to be blown by cold air provided by the refrigeration system (20). The refrigeration equipment (100) of the described structure avoids the problem that the storage space (31) affects fresh keeping of food materials due to temperature rise or cooling difficulty.

Description

Refrigeration equipment with magnetic field preservation function technical field

The invention belongs to the technical field of refrigeration, freezing and/or freshness preservation, and specifically provides a refrigeration device with a magnetic field preservation function.

Background technique

Existing refrigeration equipment (including refrigerators, freezers, freezers, etc.) tends to cause the meat to lose its juice when storing ingredients such as meat, fish, and shrimp, which in turn causes the fish and shrimp to deteriorate, resulting in the loss of nutrition and the change of taste. Difference.

Now studies have found that magnetic fields can inhibit the growth of microorganisms and molds and prolong the storage period of food materials. Therefore, the magnetic field can be used to assist in freezing the food, thereby achieving the purpose of prolonging the storage period of the food. When using a magnetic field to assist in freezing food, the magnetic field restricts the free path of water molecules to a certain extent, which is specifically manifested in the breaking of hydrogen bonds in the water molecule clusters. During the phase transition process of water, the growth of crystal nuclei is inhibited, the growth rate of ice crystals is higher than the migration rate of water molecules, and the resulting ice crystals are smaller, which causes less damage to cells and reduces the loss rate of juice in food materials. So that the nutrition and taste of the ingredients can be better preserved.

However, if the refrigeration equipment is used to assist the freezing of foodstuffs through a magnetic field, it is necessary to configure a separate magnetic field generating device (generally an electromagnetic device) for the refrigeration equipment, and the magnetic field generation device will generate heat during its operation, which will still affect the freezing of foodstuffs. Keep fresh.

Contents of the invention

An object of the present invention is to solve the problem that the refrigeration equipment equipped with a magnetic field generating device will affect the freezing and fresh-keeping effect of food due to the heat generated by the magnetic field generating device.

In order to achieve the above object, the present invention provides a refrigeration device with a magnetic field preservation function, which includes a device body, a refrigeration system attached to the device body, and a magnetic field preservation device arranged on the device body. The magnetic field preservation device include:

The storage space has a first air inlet and a first air outlet, so that the storage space receives the cold air provided by the refrigeration system through the first air inlet and makes the inside of the storage space air discharge;

The electromagnetic coil is disposed outside the storage space and is configured to be blown by cold air provided by the refrigeration system, so that the electromagnetic coil is cooled.

Optionally, the electromagnetic coil includes a first electromagnetic coil and a second electromagnetic coil, and the first electromagnetic coil and the second electromagnetic coil are arranged on opposite sides of the storage space.

Optionally, the first electromagnetic coil and the second electromagnetic coil are arranged outside the magnetic field preservation device; the refrigeration equipment further includes a storage room formed on the equipment body, and the storage room has a first Two air inlets and a second air outlet, the refrigeration system blows cold air to the first electromagnetic coil and/or the second electromagnetic coil through the second air inlet, and blows cold air to the first air inlet tuyere.

Optionally, the storage room has a plurality of second air inlets, and the first electromagnetic coil and the second electromagnetic coil correspond to at least one of the second air inlets.

Optionally, the storage room has multiple second air inlets, the first electromagnetic coil corresponds to at least one second air inlet, and the second electromagnetic coil corresponds to the second air outlet.

Optionally, a first channel and a second channel are formed between the magnetic field preservation device and the side wall of the storage room, the first electromagnetic coil is arranged in the first channel; the second electromagnetic coil set in the second channel.

Optionally, the refrigerating device further includes at least one partition arranged in the storage chamber, and the magnetic field preservation device is clamped between the side wall of the storage cavity and one of the partitions, so that one A third channel is formed between the partition and the magnetic field fresh-keeping device, so that a fourth channel is formed between the side wall of the storage chamber and the magnetic field fresh-keeping device, and the first electromagnetic coil is arranged on the first electromagnetic coil. In three channels; the second electromagnetic coil is arranged in the fourth channel.

Optionally, the refrigerating equipment further includes at least two partitions arranged in the storage room, and the magnetic field preservation device is arranged between two adjacent partitions, so that the two partitions A fifth passage is formed between one of the partitions and the magnetic field preservation device, so that a sixth passage is formed between the other of the two partitions and the magnetic field preservation device, and the first electromagnetic coil is arranged at In the fifth channel; the second electromagnetic coil is arranged in the sixth channel.

Optionally, the first electromagnetic coil is arranged on the top side of the magnetic field fresh-keeping device, and the second electromagnetic coil is arranged on the bottom side of the magnetic field fresh-keeping device; and/or, the first electromagnetic coil includes A first main coil and a first sub coil are arranged, the second electromagnetic coil includes a second main coil and a second sub coil arranged side by side, the first main coil is aligned with the second main coil, the The first secondary coil is aligned with the second secondary coil.

Optionally, the magnetic field fresh-keeping device further includes a magnetically conductive sleeve surrounding the storage space, and the magnetically conductive sleeve is connected to the second electromagnetic coil; and/or, the magnetic field fresh-keeping device further includes An outer cylinder, the storage space is formed inside the outer cylinder; and/or, the magnetic field fresh-keeping device further includes an insulation layer arranged inside the second electromagnetic coil; and/or, the magnetic field fresh-keeping device A permanent magnet corresponding to the electromagnetic coil is also included.

Based on the foregoing description, those skilled in the art can understand that, in the aforementioned technical solution of the present invention, by arranging the electromagnetic coil outside the storage space, and being able to be blown by the cold air provided by the refrigeration system, the cold air can be brought in time. The heat generated when the electromagnetic coil is working prevents the heat generated by the electromagnetic coil from being conducted to the storage space, thereby avoiding the problem that the storage space affects the cold storage and/or freshness of food due to difficulty in cooling or heating up.

Further, by making the first electromagnetic coil and the second electromagnetic coil respectively correspond to at least one second air inlet, the first electromagnetic coil and the second electromagnetic coil can be simultaneously cooled by the cold air entering from their corresponding second air inlets.

Further, by making the first electromagnetic coil correspond to at least one second air inlet, and making the second electromagnetic coil correspond to the second air outlet, the cold wind can cool the first electromagnetic coil and the second electromagnetic coil sequentially.

Still further, by setting the first electromagnetic coil as the first main coil and the first secondary coil arranged side by side, and setting the second electromagnetic coil as the second main coil and the second secondary coil arranged side by side, the refrigeration equipment can When there are many foods in the storage space, the first main coil and the second main coil, the first sub-coil and the second sub-coil are energized at the same time to generate a magnetic field; when there are fewer foods in the storage space, only the first main coil The second main coil is energized to generate a magnetic field, or the first secondary coil and the second secondary coil are energized to generate a magnetic field, thereby reducing the energy consumption of the refrigeration equipment on the premise of ensuring food refrigeration and freezing.

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 a schematic diagram of cold air circulation of refrigeration equipment in some embodiments of the present invention;

3 is a schematic cross-sectional view of a magnetic field preservation device in some embodiments of the present invention;

Fig. 4 is a cross-sectional view of the magnetic field preservation device in Fig. 3 along the A-A direction;

Fig. 5 is a schematic diagram of cold air circulation of refrigeration equipment in other embodiments of the present invention;

Fig. 6 is a schematic diagram of the cold air circulation of the refrigeration equipment in some other 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. Furthermore, the terms "first", "second", "third", "primary" and "secondary" 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.

The refrigeration equipment of the present invention includes refrigerators, freezers and freezers. The refrigeration equipment of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of the effect of refrigeration equipment in some embodiments of the present invention; Fig. 2 is a schematic diagram of cold air circulation of refrigeration equipment in some embodiments of the present invention; Fig. 3 is a schematic cross-sectional view of a magnetic field preservation device in some embodiments of the present invention; Fig. 4 is The sectional view of the magnetic field preservation device along the direction A-A in Fig. 3 .

As shown in FIGS. 1 and 2 , the refrigeration device 100 includes a device body 10 , a refrigeration system 20 attached to the device body 10 , and a magnetic field preservation device 30 disposed on the device body 10 . Among them, the refrigeration system 20 is used to provide cold air to the stored objects; the magnetic field fresh-keeping device 30 is used to place the stored objects (including food materials, medicines, drinks, biological reagents, bacterial colonies, chemical reagents, etc.), Stored items are refrigerated.

As shown in FIG. 2 , the refrigeration device 100 further includes a storage chamber 40 , which is used to place stored items and can receive cold air provided by the refrigeration system 20 . Optionally, there are multiple storage rooms 40 , and at least one of the multiple storage rooms 40 is placed with the magnetic field fresh-keeping device 30 .

Further, those skilled in the art can configure a refrigeration system 20 for each storage room 40 according to needs, and can also configure a refrigeration system 20 for two or more storage rooms 40, or can only configure one refrigeration system 20 for all storage rooms 40. A refrigeration system 20 is configured.

As shown in FIG. 2 , the refrigeration system 20 includes a refrigeration chamber 21 , an evaporator 22 and a fan 23 . Wherein, the evaporator 22 is placed in the refrigerating chamber 21 and is used for cooling the air in the refrigerating chamber 21 . The fan 23 is used to drive the air flow in the refrigeration chamber 21 to form cold air, and force the cold air to flow to the storage chamber 40 and the magnetic field fresh-keeping device 30 .

As shown in FIGS. 2 to 4 , the magnetic field preservation device 30 includes a storage space 31 , an electromagnetic coil (including a first electromagnetic coil 32 and/or a second electromagnetic coil 33 ), an optional magnetically conductive sleeve 34 , and an outer cylinder 35 , an optional drawer 36 and an optional insulation layer 37.

Continuing to refer to FIGS. 2 to 4 , the storage space 31 includes a first air inlet 311 and a first air outlet 312 , the storage space 31 receives the cold air provided by the refrigeration system 20 through the first air inlet 311 and uses the first air outlet 312 to receive the cold air provided by the refrigeration system 20 . Let the air inside out.

Further, when the magnetic field preservation device 30 includes a drawer 36 , the storage space 31 is formed in the drawer 36 . The first air inlet 311 is formed on the rear wall of the outer cylinder 35; the first air outlet 312 is formed between the outer cylinder 35 and the drawer 36 (as shown in FIG. 3 ), specifically, the first air outlet 312 is formed at the front end of the outer cylinder 35 Between the end cover of the drawer 36. In addition, those skilled in the art can also arrange the first air inlet 311 on the top wall, side wall or top wall of the outer cylinder 35 as required, and arrange the first air outlet 312 on the end cover of the drawer 36 or on the outer cylinder 35 .

When the magnetic field fresh keeping device 30 has no drawer 36 , the storage space 31 is formed in the outer cylinder 35 . The first air inlet 311 is formed on the rear wall of the outer cylinder 35 , and the first air outlet 312 is formed on the front of the outer cylinder 35 . In addition, those skilled in the art can also arrange the first air inlet 311 on the top wall, side wall or top wall of the outer cylinder 35 as required, and the first air outlet 312 is arranged on the middle or rear of the drawer 36 (specifically, it can be middle or rear rear wall, top wall, side wall or top wall).

As shown in FIGS. 2 to 4 , the electromagnetic coil is disposed outside the storage space 31 , preferably, outside the outer cylinder 35 . Further, the electromagnetic coil includes a first electromagnetic coil 32 and a second electromagnetic wire 33 , and the first electromagnetic coil 32 and the second electromagnetic coil 33 are arranged on opposite sides of the storage space 31 . Preferably, the first electromagnetic coil 32 is arranged on the top side of the magnetic field fresh keeping device 30 , and the second electromagnetic coil 33 is arranged on the bottom side of the magnetic field fresh keeping device 30 . In addition, those skilled in the art can also arrange the first electromagnetic coil 32 and the second electromagnetic coil 33 on the left and right sides or the front and rear sides of the storage space 31 according to needs.

As shown in FIGS. 3 and 4 , the first electromagnetic coil 32 includes a first main coil 321 and a first auxiliary coil 322 arranged side by side, and the second electromagnetic coil 33 includes a second main coil 331 and a second auxiliary coil 332 arranged side by side. , the first primary coil 321 is aligned with the second primary coil 331 , and the first secondary coil 322 is aligned with the second secondary coil 332 . Wherein, the first main coil 321 and the second main coil 331 are located at the rear of the magnetic field fresh-keeping device 30, and the magnetic field generated when the first main coil 321 and the second main coil 331 are energized mainly acts on the rear of the magnetic field fresh-keeping device 30; The first secondary coil 322 and the second secondary coil 332 are located at the front of the magnetic field preservation device 30 .

Optionally, the magnetic field generated when the first primary coil 321 and the second primary coil 331 are energized is the same as or opposite to the magnetic field generated when the first secondary coil 322 and the second secondary coil 332 are energized.

Further, when there are many objects to be stored in the storage space 31, the first main coil 321 and the second main coil 331, the first secondary coil 322 and the second secondary coil 332 are simultaneously energized to generate a magnetic field, and the magnetic field is generated in the storage space 31. When there are few stored items, only the first main coil 321 and the second main coil 331 are energized to generate a magnetic field, or only the first sub-coil 322 and the second sub-coil 332 are energized to generate a magnetic field, thereby ensuring that the stored items Under the premise of refrigeration and freezing, the energy consumption of the refrigeration equipment 100 is also reduced.

Still further, the refrigeration equipment 100 also includes a monitoring device, which is used to detect the area of the storage space 31 covered by the first main coil 321 and the second main coil 331 and the area covered by the first secondary coil 322 and the second secondary coil 332 Whether there are stored objects in the area. The first main coil 321 and the second main coil 331 , the first sub-coil 322 and the second sub-coil 332 are energized or not energized according to the detection result. The detection device may be any feasible device, such as an image acquisition device, an infrared detection device, a load cell, and the like.

As shown in FIG. 3 and FIG. 4 , the magnetically conductive sleeve 34 is located between the electromagnetic coil and the outer cylinder 35 , preferably, the electromagnetic coil is in contact with the magnetically conductive sleeve 34 . The magnetically conductive sleeve 34 is used to assist the electromagnetic coil to form a magnetic field with uniform strength in the storage space 31, so that the food materials in each area in the storage space 31 can be in the same magnetic field environment, which is the most important feature of the storage space 31. Stored objects provide a good magnetic field preservation environment. And the setting of the magnetic sleeve 34 also facilitates the control of the strength of the magnetic field formed by the electromagnetic coil, avoiding the situation that the strength of the local magnetic field in the storage space 31 is too high or too low. Further, the magnetically conductive sleeve 34 can prevent the magnetic field of the electromagnetic coil from leaking out, that is, it is used to limit the magnetic field generated by the electromagnetic coil, specifically, to limit the magnetic field generated by the electromagnetic coil in the storage space 31, so that the The magnetic field acts on the stored objects in the storage space 31 as much as possible. Therefore, the present invention improves the utilization rate of the magnetic field of the electromagnetic coil by providing the magnetic conductive sleeve 34 .

It should be noted that the magnetically conductive sleeve 34 can be any feasible magnetically conductive member, such as silicon steel sheet, 45 permalloy, 78 permalloy, super permalloy and so on.

As shown in FIG. 3 , the drawer 36 is attached to the outer cylinder 35 and is slidable relative to the outer cylinder 35 .

As shown in FIG. 3 and FIG. 4 , the insulation layer 37 is arranged inside the electromagnetic coil, so as to block the heat generated when the electromagnetic coil is energized on the outside of the storage space 31 . Preferably, the insulation layer 37 is disposed between the magnetically conductive sleeve 34 and the outer cylinder 35 . Alternatively, those skilled in the art may also arrange the insulation layer 37 between the magnetically conductive sleeve 34 and the electromagnetic coil according to the needs. Alternatively, those skilled in the art can also arrange the thermal insulation layer 37 on the inner side wall of the outer cylinder 35 as needed.

As shown in FIG. 2 , the storage room 40 includes a second air inlet 41 and a second air outlet 42 . The refrigeration system 20 blows cold air to the first electromagnetic coil 32 and the second electromagnetic coil 33 through the second air inlet 41 , and blows the cold air into the first air inlet 311 .

Continuing to refer to FIG. 2, the storage room 40 has a plurality of second air inlets 41, the first electromagnetic coil 32 and the second electromagnetic coil 33 correspond to at least one second air inlet 41, and the first air inlet 311 also corresponds to at least one second air inlet. Tuyere 41. When the blower fan 23 works, the cold wind is forced to flow to the second air inlet 41, and the cold wind is blown to the first electromagnetic coil 32, the second electromagnetic coil 33 and the first air inlet 311 through the corresponding second air inlet 41. The stored objects in the space 31, the first electromagnetic coil 32 and the second electromagnetic coil 33 are cooled.

Continuing to refer to FIG. 2 , a first passage 43 and a second passage 44 are formed between the magnetic field preservation device 30 and the side wall of the storage chamber 40, the first electromagnetic coil 32 is arranged in the first passage 43, and the second electromagnetic coil 33 is arranged in the Inside the second channel 44 .

Referring to FIG. 2 , the circulation path of the cold air will be briefly described.

When the blower fan 23 is working, the cold air is forced to pass through the corresponding second air inlet 41, blowing into the storage space 31, the first channel 43 and the second channel 44, respectively to the stored objects in the storage space 31, the first electromagnetic coil 32 and the second electromagnetic coil 33 for refrigeration. Then, the cold air flows out from the storage space 31 , the first passage 43 and the second passage 44 , and enters the refrigeration chamber 21 again.

Based on the foregoing description, those skilled in the art can understand that by arranging the electromagnetic coil outside the storage space 31 and being blown by the cold wind provided by the refrigeration system 20, the cold wind can take away the electromagnetic coil in time. The heat prevents the heat generated by the electromagnetic coil from being conducted into the storage space 31, thereby avoiding the problem that the storage space 31 is difficult to cool down or heats up, which affects the refrigeration and/or freshness of the food.

Further, by setting the first electromagnetic coil 32 as the first main coil 321 and the first secondary coil 322 arranged side by side, the second electromagnetic coil 33 is set as the second main coil 331 and the second secondary coil 332 arranged side by side, so that The refrigeration device 100 can simultaneously energize the first main coil 321 and the second main coil 331 , the first sub-coil 322 and the second sub-coil 332 to generate a magnetic field when there are many foods in the storage space 31 . When there are few food materials, only the first main coil 321 and the second main coil 331 are energized to generate a magnetic field, or the first sub-coil 322 and the second sub-coil 332 are energized to generate a magnetic field, thereby ensuring that the food is refrigerated and frozen. On the premise, the energy consumption of the refrigeration equipment 100 is also reduced.

Fig. 5 is a schematic diagram of the cold air circulation of the refrigeration equipment in other embodiments of the present invention.

As shown in FIG. 5 , in other embodiments of the present invention, the refrigeration device 100 further includes at least one partition 50 disposed in the storage chamber 40 . The magnetic field fresh-keeping device 30 is clamped between the side wall of the storage chamber 40 and a partition 50, and therefore a third passage 45 is formed between the partition 50 and the magnetic field fresh-keeping device 30, so that the storage chamber 40 A fourth channel 46 is formed between the side wall and the magnetic field preservation device 30 . The first electromagnetic coil 32 is arranged in the third passage 45 , and the second electromagnetic coil 33 is arranged in the fourth passage 46 .

Continuing to refer to FIG. 5 , in some other embodiments of the present invention, the fourth passage 46 communicates with the second air outlet 42 , that is, the second air outlet 42 corresponds to the second electromagnetic coil 33 . In other words, the cold air provided by the refrigeration system 20 cannot directly cool the second electromagnetic coil 33 , but is cooled by the cold air returned to the refrigeration system 20 .

For other features of the refrigeration device 100 in other embodiments of the present invention, please refer to some embodiments described above.

Fig. 6 is a schematic diagram of the cold air circulation of the refrigeration equipment in some other embodiments of the present invention.

As shown in FIG. 6 , in some other embodiments of the present invention, the refrigeration equipment 100 includes at least two partitions 50 arranged in the storage room 40 , and the magnetic field fresh-keeping device 30 is arranged on two adjacent partitions 50 Therefore, a fifth passage 47 is formed between one of the two partitions 50 and the magnetic field fresh-keeping device 30 , and a sixth passage 48 is formed between the other of the two partitions 50 and the magnetic field fresh-keeping device 30 . The first electromagnetic coil 32 is disposed in the fifth passage 47, and the second electromagnetic coil 33 is disposed in the sixth passage 48.

For other features of the refrigeration device 100 in other embodiments of the present invention, please refer to some embodiments described above.

In addition, although not shown in the figure, in other embodiments of the present invention, the refrigeration device 100 further includes a permanent magnet corresponding to the electromagnetic coil. Specifically, those skilled in the art can configure a permanent magnet for at least one of the first main coil 321 , the second main coil 331 , the first secondary coil 322 and the second secondary coil 332 as required.

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 (10)

1. A refrigeration device with a magnetic field preservation function, comprising a device body, a refrigeration system attached to the device body, and a magnetic field preservation device arranged on the device body, the magnetic field preservation device comprising:

   The storage space has a first air inlet and a first air outlet, so that the storage space receives the cold air provided by the refrigeration system through the first air inlet and makes the inside of the storage space air discharge;

   The electromagnetic coil is disposed outside the storage space and is configured to be blown by cold air provided by the refrigeration system, so that the electromagnetic coil is cooled.
2. The refrigeration device with magnetic field preservation function according to claim 1, wherein,

   The electromagnetic coil includes a first electromagnetic coil and a second electromagnetic coil, and the first electromagnetic coil and the second electromagnetic coil are arranged on opposite sides of the storage space.
3. The refrigeration device with magnetic field preservation function according to claim 2, wherein,

   The first electromagnetic coil and the second electromagnetic coil are arranged outside the magnetic field preservation device;

   The refrigeration device also includes a storage room formed on the device body, the storage room has a second air inlet and a second air outlet, and the refrigeration system blows cold air to the first air inlet through the second air inlet. An electromagnetic coil and/or the second electromagnetic coil, and blowing cold air into the first air inlet.
4. The refrigeration device with magnetic field preservation function according to claim 3, wherein,

   The storage room has a plurality of second air inlets, and the first electromagnetic coil and the second electromagnetic coil correspond to at least one of the second air inlets respectively.
5. The refrigeration device with magnetic field preservation function according to claim 3, wherein,

   The storage room has multiple second air inlets, the first electromagnetic coil corresponds to at least one second air inlet, and the second electromagnetic coil corresponds to the second air outlet.
6. The refrigeration device with magnetic field preservation function according to any one of claims 3-5, wherein,

   A first channel and a second channel are formed between the magnetic field preservation device and the side wall of the storage room,

   the first electromagnetic coil is disposed within the first channel;

   The second electromagnetic coil is disposed within the second channel.
7. The refrigeration device with magnetic field preservation function according to any one of claims 3-5, wherein,

   The refrigeration equipment also includes at least one partition arranged in the storage room,

   The magnetic field fresh-keeping device is clamped between the side wall of the storage chamber and one of the partitions, so that a third channel is formed between one of the partitions and the magnetic field fresh-keeping device, so that the stored goods A fourth channel is formed between the side wall of the cavity and the magnetic field preservation device,

   the first electromagnetic coil is disposed in the third channel;

   The second electromagnetic coil is disposed in the fourth channel.
8. The refrigeration device with magnetic field preservation function according to any one of claims 3-5, wherein,

   The refrigeration equipment also includes at least two partitions arranged in the storage room,

   The magnetic field preservation device is arranged between two adjacent partitions, and therefore a fifth channel is formed between one of the two partitions and the magnetic field preservation device, so that the two partitions A sixth channel is formed between the other of the partitions and the magnetic field preservation device,

   the first electromagnetic coil is disposed in the fifth channel;

   The second electromagnetic coil is disposed in the sixth channel.
9. The refrigeration device with a magnetic field preservation function according to any one of claims 2-5, wherein,

   The first electromagnetic coil is arranged on the top side of the magnetic field preservation device, and the second electromagnetic coil is arranged on the bottom side of the magnetic field preservation device; and/or,

   The first electromagnetic coil includes a first main coil and a first auxiliary coil arranged side by side, the second electromagnetic coil includes a second main coil and a second auxiliary coil arranged side by side, and the first main coil and the first auxiliary coil are arranged side by side. The two primary coils are aligned, and the first secondary coil is aligned with the second secondary coil.
10. The refrigeration device with magnetic field preservation function according to any one of claims 1-5, wherein,

    The magnetic field preservation device also includes a magnetically permeable sleeve surrounding the storage space, and the magnetically permeable sleeve is connected to the electromagnetic coil; and/or,

    The magnetic field preservation device also includes an outer cylinder, the storage space is formed inside the outer cylinder; and/or,

    The magnetic field preservation device also includes an insulation layer arranged inside the electromagnetic coil; and/or,

    The magnetic field preservation device also includes a permanent magnet corresponding to the electromagnetic coil.

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