CN115704639A - Magnetic field fresh-keeping device and refrigeration equipment - Google Patents
Magnetic field fresh-keeping device and refrigeration equipment Download PDFInfo
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- CN115704639A CN115704639A CN202110920592.9A CN202110920592A CN115704639A CN 115704639 A CN115704639 A CN 115704639A CN 202110920592 A CN202110920592 A CN 202110920592A CN 115704639 A CN115704639 A CN 115704639A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 20
- 230000006698 induction Effects 0.000 claims abstract description 38
- 238000004321 preservation Methods 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 18
- 235000013305 food Nutrition 0.000 description 19
- 239000000463 material Substances 0.000 description 18
- 238000002474 experimental method Methods 0.000 description 12
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 12
- 238000007710 freezing Methods 0.000 description 8
- 230000008014 freezing Effects 0.000 description 8
- 235000015278 beef Nutrition 0.000 description 7
- 241000972773 Aulopiformes Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 235000019515 salmon Nutrition 0.000 description 5
- 238000002955 isolation Methods 0.000 description 3
- 229910000889 permalloy Inorganic materials 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 235000011483 Ribes Nutrition 0.000 description 1
- 241000220483 Ribes Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- -1 bacterial colonies Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000009246 food effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000000614 rib Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D25/00—Charging, supporting, and discharging the articles to be cooled
- F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention provides a magnetic field preservation device which is applied to refrigeration equipment. A storage space is limited in the storage component; the magnet assembly comprises a first magnet and a second magnet, and the first magnet and the second magnet are respectively arranged on two opposite sides of the storage space; the magnetic conduction assembly comprises a first magnetic conduction component corresponding to the first magnet and a second magnetic conduction component corresponding to the second magnet, and the first magnetic conduction component and the second magnetic conduction component are used for assisting the first magnet and the second magnet to form a magnetic field with uniform strength in the storage space. The magnet assembly and the magnetic conduction assembly are configured to enable magnetic induction intensity in the storage space to be a preset value, and the value range of the preset value is 1 mT-10 mT. The invention improves the utilization rate of the magnetic field, optimizes the fresh-keeping effect of the stored objects, and thus improves the use experience of the refrigerator, especially the intelligent refrigerator.
Description
Technical Field
The invention belongs to the technical field of refrigeration, freezing and preservation, and particularly provides a magnetic field preservation device and refrigeration equipment.
Background
Theoretical research finds that the magnetic field has great influence on the formation of ice crystals in the freezing process and can reduce the freezing temperature of food materials.
In order to achieve the purpose of keeping food fresh at low temperature without freezing, some manufacturers provide a magnet for a refrigeration device (such as a refrigerator) to provide a magnetic field for food in the refrigeration device through the magnet.
However, the fresh-keeping effect of the food materials can be influenced by too large and too small magnetic field intensities, and even the food materials can be prevented from being safe.
Disclosure of Invention
The invention aims to provide a magnetic field fresh-keeping device and refrigeration equipment with moderate magnetic field intensity to improve the fresh-keeping effect of food materials.
Another object of the present invention is to provide a magnetic field of uniform strength to the storage space.
In order to achieve the above object, the present invention provides a magnetic field fresh-keeping device applied to a refrigeration apparatus, comprising:
a storage assembly having a storage space defined therein;
a magnet assembly including a first magnet and a second magnet, the first magnet and the second magnet being disposed at opposite sides of the storage space, respectively;
the magnetic conduction assembly comprises a first magnetic conduction component corresponding to the first magnet and a second magnetic conduction component corresponding to the second magnet, and the first magnetic conduction component and the second magnetic conduction component are used for assisting the first magnet and the second magnet to form a magnetic field with uniform strength in the storage space;
the magnetic component and the magnetic conduction component are configured to enable the magnetic induction intensity in the storage space to be a preset value, and the value range of the preset value is 1 mT-10 mT.
Optionally, the preset value ranges from 1mT to 5mT.
Optionally, the magnetically conductive assembly further comprises a magnetically conductive connector connecting the first magnetically conductive member and the second magnetically conductive member together, the first magnetically conductive member, the second magnetically conductive member and the magnetically conductive connector together forming a magnetically conductive loop.
Optionally, the first magnet and the second magnet are each electromagnetic coils; the magnetic field freshness retaining device further comprises a magnetic induction detector, wherein the magnetic induction detector is used for detecting the magnetic induction of the magnetic field in the storage space, so that the current flowing through the first magnet and/or the second magnet is adjusted 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 freshness retaining device includes a plurality of magnetic induction detectors, and the plurality of magnetic induction detectors are spaced along a direction in which the first magnet approaches the second magnet.
Optionally, the projection of the storage space on the extension surface of the first magnet is positioned at the inner side of the peripheral outline of the first magnet; the projection of the storage space on the extension surface of the second magnet is positioned on the inner side of the peripheral outline of the second magnet.
Optionally, the storage assembly comprises:
the magnetic assembly and the magnetic conduction assembly are arranged on the drawer fixing assembly;
a drawer slidably mounted to the drawer securing assembly, the storage space being formed within the drawer.
Optionally, the drawer fixing assembly includes a drawer receiver, a front end of which is formed with an opening allowing 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 further provides a refrigeration device, which includes the magnetic field fresh-keeping device according to any one of the above technical solutions.
Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, by providing the first magnetic conductive member corresponding to the first magnet and providing the second magnetic conductive member corresponding to the second magnet, 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 further, each part of the stored object in the storage space is subjected to the magnetic field with the same strength, and further, each part of the stored object can obtain the same fresh-keeping effect.
Furthermore, magnetic induction intensity in the storage space is set to be a preset value, and the value range of the preset value is limited to be 1mT to 10mT, so that stored objects in the storage space can be in a good fresh-keeping environment, and the fresh-keeping effect of the stored objects is improved.
Further, connect together first magnet and second magnet through the magnetic conduction connecting piece for first magnet, second magnet and magnetic conduction connecting piece can form the magnetic conduction return circuit, and the magnetic field that looses the storing space outside to the magnet subassembly is confined effectively and is restrained, and then makes the magnetic field that the magnet subassembly produced can almost all be used in the storing space, thereby has promoted the utilization ratio in magnetic field.
And furthermore, the magnetic induction intensity of the magnetic field in the storage space is detected by the magnetic induction intensity detector, and the current flowing through the first magnet and/or the second magnet is adjusted according to the detected magnetic induction intensity, so that the intensity of the magnetic field in the storage space is changed, and the problem that the magnetic field intensity in the storage space is reduced and the storage effect of the stored objects is influenced due to the fact that the magnetic field intensity of the magnet assembly and the magnetic conduction assembly is reduced because the performances of the magnet assembly and the magnetic conduction assembly change (for example, the electromagnetic performance and/or the magnetic conduction performance are attenuated) in the long-term use process is at least avoided.
Furthermore, the magnetic induction intensity detectors are distributed at intervals along the direction that the first magnet is close to the second magnet, so that each part in the storage space can have a magnetic field with better intensity when the stored object has magnetic isolation performance, and the preservation effect of the stored object is ensured.
In addition, the first magnet is set as the permanent magnet or the combination of the permanent magnet and the electromagnetic coil, the second magnet is set as the permanent magnet or the combination of the permanent magnet and the electromagnetic coil, and particularly both the first magnet and the second magnet are set as the permanent magnets, so that the magnet assembly can continuously generate a magnetic field acting on the stored object, and meanwhile, the energy consumption of the refrigeration equipment is reduced.
Furthermore, according to the technical scheme, the magnetic field is formed in the refrigerator, so that the storage quality of the refrigerator is improved, a new fresh-keeping function can be provided for the intelligent refrigerator, the increasingly improved use requirements of users on the intelligent refrigerator are met, and the quality of smart families and smart life is further improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly explain the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number identified in different figures are the same or similar; the drawings of the invention are not necessarily to scale relative to each other.
In the drawings:
FIG. 1 is a schematic illustration of the effect of a refrigeration unit in some embodiments of the invention;
FIG. 2 is a schematic diagram of the effect of the magnetic field preservation apparatus in some embodiments of the present invention;
FIG. 3 is an isometric view of the magnet assembly and the magnetically permeable assembly of FIG. 2;
FIG. 4 is an upper front perspective view of a magnetic field preservation apparatus according to some embodiments of the present invention;
FIG. 5 is a front bottom isometric view of a magnetic field preservation apparatus according to some embodiments of the present invention;
FIG. 6 is an isometric cross-sectional view of the magnetic freshness retaining device of FIG. 4;
FIG. 7 is a graph of TVB-N versus magnetic field strength for food material in some experiments in accordance with the present invention;
FIG. 8 is a graph of the relationship between the intensity of the magnetic field to which the food material is subjected and the rate of juice loss in some experiments in accordance with the present invention;
FIG. 9 is a graph of the relationship between the intensity of the magnetic field to which the food material is subjected and the rate at which the food material freezes in some of the experiments of the present invention;
FIG. 10 is a graph of the relationship between the intensity of the magnetic field to which the food material is subjected and the rate of juice loss in other experiments in accordance with the invention;
fig. 11 is a schematic diagram illustrating the effect of the magnetic induction detector on the magnetic refreshing apparatus according to some embodiments of the present invention.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, not all of the embodiments of the present invention, and the part of the embodiments are intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments provided by the present invention without inventive effort, shall still fall within the scope of protection 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", "inner", "outer", etc., indicating directions or positional relationships, 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, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Figure 1 is a schematic diagram of the effect of a refrigeration unit according to some embodiments of the invention. The refrigerating apparatus includes a cabinet 100 and a magnetic field fresh-keeping device 200. The magnetic field fresh-keeping device 200 is installed on the box 100 and used for refrigerating and keeping fresh stored objects (including food materials, medicines, wine, biological reagents, bacterial colonies, chemical reagents and the like).
Further, although not shown in the drawings, a freezing chamber and/or a refrigerating chamber and/or a temperature-changing chamber are formed in the cabinet 100, and the magnetic field freshness-retaining device 200 is disposed in the freezing chamber and/or the refrigerating chamber and/or the temperature-changing chamber.
In the invention, the refrigeration equipment comprises a refrigerator, an ice chest and a freezer, and the refrigeration equipment can be air-cooled refrigeration equipment or direct-cooled refrigeration equipment.
FIG. 2 is a schematic diagram of the effect of the magnetic field preservation apparatus in some embodiments of the present invention; fig. 3 is an isometric view of the magnet assembly and the magnetically permeable assembly of fig. 2.
As shown in fig. 2 and 3, in some embodiments of the present invention, the magnetic field preservation apparatus 200 includes a storage assembly 210, a magnet assembly 220, and a magnetically permeable assembly 230. A storage space 2101 is defined within storage assembly 210. Optionally, the magnet assembly 220 and the magnetically permeable assembly 230 are each secured to the storage assembly 210. Further optionally, both magnet assembly 220 and magnetically permeable assembly 230 are disposed outside of storage space 2101 to avoid occupying storage space 2101. Alternatively, one skilled in the art can also dispose magnet assembly 220 and/or magnetically permeable assembly 230 within storage space 2101 as desired.
With continued reference to fig. 2 and 3, the magnet assembly 220 includes a first magnet 221 and a second magnet 222, the first magnet 221 and the second magnet 222 being disposed on opposite sides of the storage space 2101, respectively. Preferably, the first magnet 221 and the second magnet 222 are disposed at 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 disposed at the top side and the bottom side of the storage space 2101, respectively. Further, as necessary, those skilled in the art may also arrange the first magnet 221 and the second magnet 222 on opposite sides of the storage space 2101 in the longitudinal direction or the width direction, for example, arrange the first magnet 221 and the second magnet 222 on the left and right sides or the front and rear sides of the storage space 2101, respectively. As can be understood by those skilled in the art, 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 onto the extension plane of the first magnet 221 is located inside the peripheral contour of the first magnet 221; the projection of the storage space 2101 on the extension surface of the second magnet 222 is located inside the peripheral contour of the second magnet 222; so that each part in the storage space 2101 has a magnetic field.
It is further preferable that the first and second magnets 221 and 222 are electromagnetic coils to adjust the strength of the magnetic field generated by the first and second magnets 221 and 222 by controlling the magnitude of the current flowing through the first and/or second magnets 221 and 222. Of course, the first magnet 221 and/or the second magnet 222 may be provided as a permanent magnet or a combination of a permanent magnet and an electromagnetic coil as required by those skilled in the art.
With continued reference to fig. 2 and 3, the magnetic conductive assembly 230 includes a first magnetic conductive member 231 corresponding to the first magnet 221 and a second magnetic conductive member 232 corresponding to the second magnet 222.
As can be understood by those skilled in the art, since the first and second magnetic conductive members 231 and 232 can occlude the magnetic induction lines generated by the first and second magnets 221 and 222 and uniformly distribute the magnetic induction lines between the first and second magnetic conductive members 231 and 232, the first and second magnetic conductive members 231 and 232 can not only reduce the magnetic field emitted from the first and second magnets 221 and 222 to the outside of the storage space 2101, but also can assist the first and second magnets 221 and 222 to form a magnetic field with uniform strength in the storage space 2101.
As can be understood by those skilled in the art, the magnetic field with uniform intensity in the storage space 2101 can make the magnetic field applied to the stored objects in each region in the storage space have the same effect, so that the stored objects in each region in the storage space 2101 have the same fresh-keeping effect.
With continued reference to fig. 2 and 3, the magnetic conductive assembly 230 further includes a magnetic conductive connector 233 connecting the first magnetic conductive member 231 and the second magnetic conductive member 232 together, the first magnetic conductive member 231, the second magnetic conductive member 232, and the magnetic conductive connector 233 collectively forming a magnetic conductive loop. The magnetic conduction loop can effectively restrain and restrain the magnetic field which is scattered outside the storage space 2101 by the magnet assembly 220, so that the magnetic field generated by the magnet assembly 220 can be almost completely applied to the storage space 2101, and the utilization rate of the magnetic field is improved.
In the present invention, the first and second magnetically permeable members 231, 232 and the magnetically permeable connecting member 233 may be made of any feasible material, such as silicon steel, 45 permalloy, 78 permalloy, super permalloy, etc.
The structure of the storage module 210 of the present invention will be described in detail with reference to fig. 4 to 6. FIG. 4 is a front upper axial view of a magnetic field preservation apparatus according to some embodiments of the present invention; FIG. 5 is a front bottom isometric view of a magnetic freshness device in some embodiments of the invention; fig. 6 is an isometric sectional view of the magnetic freshness retaining device of fig. 4.
As shown in fig. 4-6, 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 component 211 is used for installing and fixing the magnet component 220 and the magnetic conducting component 230; in other words, the magnet assembly 220 and the magnetic conductive assembly 230 are both disposed on the drawer fixing assembly 211. A drawer 212 is slidably mounted into the drawer fixing assembly 211, and a storage space 2101 is formed in the drawer 212.
With continued reference to fig. 4 to 6, the drawer fixing assembly 211 includes a drawer receiver 2111, and a front end of the drawer receiver 2111 is formed with an opening 21111 allowing the drawer 212 to slide in/out. 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 magnetically permeable assembly 230 are disposed outside of the drawer receptacle 2111.
Still further, although not labeled in the figures, the drawer securing assembly 211 also includes structure for securing the magnet assembly 220 and the magnetically permeable assembly 230, such as securing plates disposed on the top and bottom sides of the drawer receptacle 2111.
Referring now to fig. 7-10, the strength of the magnetic field generated by the magnet assembly 220 and the magnetic permeable assembly 230 of the present invention will be described in detail. FIG. 7 is a graph showing the relationship between the intensity of magnetic field of food and TVB-N in some experiments according to the present invention; FIG. 8 is a graph of the relationship between the intensity of the magnetic field to which the food material is subjected and the rate of juice loss in some experiments in accordance with the present invention; FIG. 9 is a graph of the relationship between the intensity of the magnetic field applied to the food material and the rate of freezing of the food material in some experiments of the present invention;
FIG. 10 is a graph of the relationship between the intensity of the magnetic field to which the food material is subjected and the rate of juice loss in other experiments in accordance with the invention.
In the present invention, the magnet assembly 220 and the magnetic conductive assembly 230 are configured such that the magnetic induction intensity in the storage space 2101 is a predetermined value, and the predetermined value ranges from 1mT to 10mT. For example, the preset value may be 1mT, 4mT, 5mT, 6.5mT, 7.8mT, 10mT, or the like.
Here, 1000mt =1t, t is a physical quantity tesla representing magnetic induction.
As shown in FIG. 7, in some experiments of the present invention salmon were stored in a uniform magnetic field of 0-12mT for 10 days, and then the TVB-N value after storage was evaluated. The TVB-N is one of very important evaluation indexes for evaluating the quality of meat salmon, mainly represents the protein putrefaction degree of the salmon, and the limit value of the TVB-N of a fresh animal product is 12mg/100g according to national standard.
As can be seen from FIG. 7, the TVB-N value of salmon stored under the magnetic field strength of 1-10mT is less than 12mg/100g after 10 days, and the protein in salmon is low in degree of putrefaction and deterioration.
As shown in FIG. 8, in some experiments of the present invention, beef was stored for 10 days at-4 ℃ in a uniform magnetic field of 0-12mT, and then juice loss values after storage were evaluated.
As can be seen from FIG. 8, the juice loss value of the beef stored under the magnetic field strength of 1-10mT is less than 6% after 10 days, and the other values are all more than 6%. The beef is frozen at the temperature of-4 ℃ under the magnetic field intensity of 1-10mT, so the juice loss rate is high; however, the beef is not frozen under the magnetic field intensity of 1-10mT, so the juice loss rate is low.
Therefore, the magnetic field with the strength of 1-10mT is provided for the stored objects in the storage space 2101, so that the stored objects can be preserved, and the preservation performance of the magnetic field preservation device 200 and refrigeration equipment on food materials is improved.
As shown in FIG. 9, in some experiments of the present invention, 500g of Kriging was placed in a uniform magnetic field of 0-8mT and then the same amount of cold was applied. Then the time for cooling the sirloin from 0 ℃ to-5 ℃ under different magnetic field strengths is obtained.
As can be seen from FIG. 9, the cooling time of the sirloin from 0 ℃ to-5 ℃ is less than 70min under the magnetic field strength of 1-5 mT. The Ribes nivalis L is cooled for 85min in the environment without magnetic field. It can be seen that the magnetic field strength of 1-5mT can significantly increase the food material freezing speed.
As shown in FIG. 10, in some experiments of the invention, beef was placed in a uniform magnetic field of 0-8mT at-18 ℃ for 10 days and then evaluated for values of juice loss after storage.
As can be seen from FIG. 10, the value of the juice loss of the beef after 10 days is less than 4% under the magnetic field strength of 1-5 mT; in the conventional environment without magnetic field, the juice loss rate of the beef is 4.7%. This is mainly because the magnetic field at a strength of 1-5mT can cause smaller and more uniform ice crystals to be generated, thereby reducing the juice loss rate of the food material.
Thus, in a further preferred embodiment of the invention, the predetermined value further ranges from 1mT to 5mT.
FIG. 11 is a schematic diagram of the effect of the magnetic induction detector on the magnetic refreshing apparatus according to some embodiments of the present invention.
As shown in fig. 11, in some embodiments of the present invention, the magnetic field refreshing apparatus 200 further includes a magnetic induction detector 240, and the magnetic induction detector 240 is configured to detect magnetic induction of the magnetic field in the storage space 2101, so as to adjust the magnitude of the current flowing through the first magnet 211 and/or the second magnet 212 according to the detected magnetic induction.
Wherein the first and second magnetic bodies 211 and 212 are electromagnetic coils.
The magnetic induction detector 240 may be any feasible device, such as a hall sensor.
Alternatively, the magnetic induction detector 240 is disposed on the side of the storage space 2101 adjacent to the first magnet 221. For example, the magnetic induction detector 240 is provided 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 freshness retaining device 200 includes a plurality of magnetic induction intensity detectors 240, the plurality of magnetic induction intensity detectors 240 are distributed at intervals along the direction in which the first magnet 221 is close to the second magnet 222, so as to measure the magnetic field intensity at a plurality of positions in the storage space 2101 in the direction in which the first magnet 221 is close to the second magnet 222, so that each part in the storage space 2101 can have a magnetic field with a better intensity when the stored object has a magnetic isolation performance, thereby ensuring the freshness retaining effect of the stored object.
For example, if there is no stored object, the magnetic field intensity of each part in the storage space 2101 is 3mT. When the storage space 2101 is filled with the stored objects, the magnetic field intensity in the middle area of the storage space 2101 is blocked by the stored objects and is reduced to 0.5mT. In order to ensure that the stored objects in each part of the storage space 2101 have a good safety 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 of the storage space 2101 is not less than 1mT and not more than 5mT.
Based on the foregoing description, it can be understood by those skilled in the art 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 be 1mT to 10mT, the stored objects in the storage space 2101 can be in an excellent fresh-keeping environment, and the fresh-keeping effect of the stored objects is improved. And the plurality of magnetic induction intensity detectors 240 are distributed at intervals along the direction that the first magnet 221 is close to the second magnet 222, so that each part in the storage space 2101 can have a magnetic field with better intensity when the stored object has magnetic isolation performance, and the preservation effect of the stored object is ensured.
So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. A person skilled in the art may split and combine the technical solutions in the above embodiments without departing from the technical principle of the present invention, and may also make equivalent changes or substitutions for the related technical features, and any changes, equivalents, improvements, etc. made within the technical idea and/or technical principle of the present invention will fall within the protection scope of the present invention.
Claims (10)
1. A magnetic field fresh-keeping device is applied to refrigeration equipment, and comprises:
the storage assembly is internally limited with a storage space;
the magnet assembly comprises a first magnet and a second magnet, and the first magnet and the second magnet are respectively arranged at two opposite sides of the storage space;
the magnetic conduction assembly comprises a first magnetic conduction component corresponding to the first magnet and a second magnetic conduction component corresponding to the second magnet, and the first magnetic conduction component and the second magnetic conduction component are used for assisting the first magnet and the second magnet to form a magnetic field with uniform strength in the storage space;
the magnetic component and the magnetic conduction component are configured to enable the magnetic induction intensity in the storage space to be a preset value, and the value range of the preset value is 1 mT-10 mT.
2. The magnetic field preservation apparatus of claim 1,
the value range of the preset value is 1mT to 5mT.
3. The magnetic field preservation apparatus of claim 1,
the magnetic conduction assembly further comprises a magnetic conduction connecting piece which connects the first magnetic conduction component and the second magnetic conduction component together, and the first magnetic conduction component, the second magnetic conduction component and the magnetic conduction connecting piece jointly form a magnetic conduction loop.
4. The magnetic field preservation apparatus of claim 1,
the first magnet and the second magnet are each electromagnetic coils;
the magnetic field freshness retaining device further comprises a magnetic induction detector, wherein the magnetic induction detector is used for detecting the magnetic induction of the magnetic field in the storage space, so that the current flowing through the first magnet and/or the second magnet is adjusted according to the detected magnetic induction.
5. The magnetic field freshness retaining device of claim 4,
the magnetic field fresh-keeping device comprises a plurality of magnetic induction intensity detectors, and the magnetic induction intensity detectors are distributed along the direction of the first magnet close to the second magnet at intervals.
6. The magnetic field refreshing apparatus according to any one of claims 1 to 5, wherein,
the projection of the storage space on the extension surface of the first magnet is positioned on the inner side of the peripheral outline of the first magnet;
the projection of the storage space on the extension surface of the second magnet is positioned on the inner side of the peripheral outline of the second magnet.
7. The magnetic field refreshing apparatus according to any one of claims 1 to 5, wherein,
the storing subassembly includes:
the magnetic assembly and the magnetic conduction assembly are arranged on the drawer fixing assembly;
a drawer slidably mounted to the drawer securing assembly, the storage space being formed within the drawer.
8. The magnetic field preservation apparatus of claim 7,
the drawer fixing assembly includes a drawer receiver, a front end of which is formed with an opening allowing the drawer to slide in/out.
9. The magnetic field refreshing apparatus according to any one of claims 1 to 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.
10. A refrigeration appliance comprising a magnetic freshness retaining device of any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110920592.9A CN115704639A (en) | 2021-08-11 | 2021-08-11 | Magnetic field fresh-keeping device and refrigeration equipment |
| PCT/CN2022/098435 WO2023016079A1 (en) | 2021-08-11 | 2022-06-13 | Magnetic field freshness-preservation device, and refrigeration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110920592.9A CN115704639A (en) | 2021-08-11 | 2021-08-11 | Magnetic field fresh-keeping device and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115704639A true CN115704639A (en) | 2023-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110920592.9A Pending CN115704639A (en) | 2021-08-11 | 2021-08-11 | Magnetic field fresh-keeping device and refrigeration equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115704639A (en) |
| WO (1) | WO2023016079A1 (en) |
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| JPH11155831A (en) * | 1997-12-01 | 1999-06-15 | Hitachi Medical Corp | Passive shield type superconductive magnet |
| CN105276908A (en) * | 2015-03-13 | 2016-01-27 | 合肥华凌股份有限公司 | Refrigerator |
| US20160163431A1 (en) * | 2013-07-30 | 2016-06-09 | Multidimension Technology Co., Ltd | Magnetoresistive current limiter |
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| CN1090147A (en) * | 1993-01-09 | 1994-08-03 | 株式会社金星社 | Utilize magnetic energy to make the food in the refrigerator or the ionic structure of drinking water be the device of crystallization |
| CN103900322B (en) * | 2012-12-28 | 2016-06-22 | 山东省商业集团有限公司 | A kind of quick freezing repository with magnetic field device and operation method thereof |
| CN105486017B (en) * | 2015-12-29 | 2019-08-30 | 盛志高 | A kind of low-temperature freezer and its food freezing methods based on magnetic field |
| CN113007959B (en) * | 2018-04-24 | 2022-09-20 | 海尔智家股份有限公司 | Drawer assembly and refrigerator with same |
| CN108645108A (en) * | 2018-05-31 | 2018-10-12 | 合肥美菱股份有限公司 | A kind of fresh-keeping refrigerator |
| CN111503984B (en) * | 2020-04-27 | 2022-02-01 | 合肥华凌股份有限公司 | Freshness retaining container and refrigeration equipment |
-
2021
- 2021-08-11 CN CN202110920592.9A patent/CN115704639A/en active Pending
-
2022
- 2022-06-13 WO PCT/CN2022/098435 patent/WO2023016079A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11155831A (en) * | 1997-12-01 | 1999-06-15 | Hitachi Medical Corp | Passive shield type superconductive magnet |
| US20160163431A1 (en) * | 2013-07-30 | 2016-06-09 | Multidimension Technology Co., Ltd | Magnetoresistive current limiter |
| CN105276908A (en) * | 2015-03-13 | 2016-01-27 | 合肥华凌股份有限公司 | Refrigerator |
| CN113192719A (en) * | 2021-05-11 | 2021-07-30 | 英都斯特(无锡)感应科技有限公司 | Economical and practical embedded freezing, refrigerating, fresh-keeping and weak magnetic field preservation modular device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023016079A1 (en) | 2023-02-16 |
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