CN105486017B - A kind of low-temperature freezer and its food freezing methods based on magnetic field - Google Patents
A kind of low-temperature freezer and its food freezing methods based on magnetic field Download PDFInfo
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- CN105486017B CN105486017B CN201511004878.3A CN201511004878A CN105486017B CN 105486017 B CN105486017 B CN 105486017B CN 201511004878 A CN201511004878 A CN 201511004878A CN 105486017 B CN105486017 B CN 105486017B
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- magnetic field
- field
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- generating unit
- low temperature
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
Abstract
The invention discloses a kind of low-temperature freezers based on magnetic field, including low temperature chamber and its related freezing equipment.Wherein, the low-temperature freezer further includes a field generator for magnetic, and the field generator for magnetic includes the first field generating unit for generating steady magnetic field and the second field generating unit for generating alternating magnetic field；The first field generating unit setting corresponding with the second field generating unit makes the steady magnetic field and alternating magnetic field form scheduled angle, and preset composite space magnetic field is generated in the low temperature chamber.Pass through the staggered alternating magnetic field of setting predetermined angular and steady magnetic field, corresponding composite space magnetic field is formed in low temperature chamber, the moisture of aqueous food is set to keep original distribution in refrigerating process, it avoids the problem that the redistribution and loss of moisture, can preferably keep freshness of the food before freezing.
Description
Technical field
The present invention relates to food product refrigeration technical field more particularly to a kind of low-temperature freezers and its food based on magnetic field
Freezing method.
Background technique
In Refrigeration Technique development, the freezing of water-bearing articles is one of them very important classification.In water-bearing articles system
During cold, the variation of moisture is the key problem of the refrigerating field.For example, in food containing water (including veterinary antibiotics, meat
Class etc.) refrigerating process in, the redistribution of the loss of moisture and moisture in article will seriously affect the cold of food containing water
Freeze the freshness and mouthfeel of front and back.
Cause the concrete reason of the above problem to be: the moisture in food containing water has the combination water in molecule, also there is cell
In, intercellular Free water.On the one hand, it can move and be lost during freezing and defrosting in conjunction with water, Free water；Another party
Face, in conjunction with water, Free water, crystal growth, this collective's process can destroy internal structure where water in refrigerating process.Except this it
Outside, for moisture in freezing with defrosting, water crystallization and course of dissolution meeting part change distribution of the moisture in food.
The primary characteristic for being frozen article is kept to be very important.It include veterinary antibiotics, meat in the food with moisture
In the refrigerating process of class etc., the redistribution of the loss of moisture and moisture in the tissue is occurred after influencing primary characteristic freezing
The principal element of change.
Existing Refrigeration Technique such as freezer freezing or general refrigerator freezing, the moisture that will cause in food containing water have in molecule
In conjunction with water, in conjunction with water, Free water, crystal growth is unfavorable for fresh-keeping consequence in refrigerating process.
Due to above, existing Refrigeration Technique will lead to food containing water and moisture occur in refrigeration and course of defrosting
It is lost the process with redistribution, can generate certain destruction to food leads to the freshness for seriously affecting food and mouth
Sense.Disclosed by the invention kind of low-temperature freezer and its food freezing methods based on magnetic field can be good at overcoming above-mentioned ask
Topic plays freezing and fresh-keeping double action.
Summary of the invention
Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of cryogenic freezings based on magnetic field
Device and its food freezing methods, it is intended to which solving Refrigeration Technique in the prior art causes food containing water in refrigeration and course of defrosting
The problem of water loss and redistribution occurs.
In order to achieve the above object, this invention takes following technical schemes:
A kind of low-temperature freezer based on magnetic field, including low temperature chamber and its related freezing equipment, wherein the low temperature cold
Freezing device further includes a field generator for magnetic, and the field generator for magnetic includes the first field generating unit for generating steady magnetic field
And generate the second field generating unit of alternating magnetic field；
The first field generating unit setting corresponding with the second field generating unit makes the steady magnetic field and alternation
Magnetic field forms scheduled angle, and preset composite space magnetic field is generated in the low temperature chamber.
The low-temperature freezer based on magnetic field, wherein first field generating unit includes several permanent magnetism materials
Material, the permanent-magnet material are spliced to form the steady magnetic field of the first predetermined space range.
The low-temperature freezer based on magnetic field, wherein first field generating unit further includes bistable electromagnetic
Coil, the bistable electromagnetic coil form the steady magnetic field of the second predetermined space range after being powered.
The low-temperature freezer based on magnetic field, wherein second field generating unit includes for generating friendship
The Electromagnetic Launching and fairing of varying magnetic field.
The low-temperature freezer based on magnetic field, wherein first field generating unit is arranged in the low temperature
Room two sides form the steady magnetic field being distributed along the first direction of low temperature chamber；
The second field generating unit setting forms the alternation being distributed in a second direction in the other two sides of the low temperature chamber
Magnetic field；
The first direction is mutually perpendicular to second direction.
The low-temperature freezer based on magnetic field, wherein first field generating unit is arranged in the low temperature
Room two sides form the steady magnetic field being distributed along the first direction of low temperature chamber；
The second field generating unit setting forms the alternation being distributed in a second direction in the other two sides of the low temperature chamber
Magnetic field；
The first direction is parallel with second direction.
The low-temperature freezer based on magnetic field, wherein first field generating unit is arranged in the low temperature
Room two sides form the steady magnetic field being distributed along the first direction of low temperature chamber；
Second field generating unit further includes a rotating base and alternating magnetic field generating device；The alternating magnetic field hair
Generating apparatus is arranged on the rotating base, under the driving of the rotating base, rotates in the plane of the first direction；
The alternating magnetic field and angle of the steady magnetic field in the plane of the first direction are with the alternating magnetic field
The rotation of generating device and change.
A kind of food freezing methods for applying low-temperature freezer as described above, wherein the described method includes:
According to the water content of the food, the indoor composite space magnetic field of low temperature is determined；
Corresponding composite space magnetic field is generated using the field generator for magnetic, and
Freeze preservation is carried out to the food.
The utility model has the advantages that a kind of low-temperature freezer and its food freezing methods based on magnetic field provided by the invention, passes through
The staggered alternating magnetic field of predetermined angular and steady magnetic field are set, forms corresponding composite space magnetic field in low temperature chamber, makes aqueous
The moisture of food keeps original distribution in refrigerating process, avoids the problem that the redistribution and loss of moisture, can
The preferable freshness for keeping food before freezing.And the low-temperature freezer can also be according to the aqueous of different foods
The magnetic field strength in amount adjustment composite space magnetic field and direction etc., have preferable applicability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the field generator for magnetic of the low-temperature freezer of the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of the field generator for magnetic of the low-temperature freezer of the embodiment of the present invention 2.
Fig. 3 is the structural schematic diagram of the field generator for magnetic of the low-temperature freezer of the embodiment of the present invention 3.
Specific embodiment
The present invention provides a kind of low-temperature freezer and its food freezing methods based on magnetic field.To make mesh of the invention
, technical solution and effect it is clearer, clear, the present invention is described in more detail as follows in conjunction with drawings and embodiments.
It should be appreciated that described herein, specific examples are only used to explain the present invention, is not intended to limit the present invention.
In the low-temperature freezer based on magnetic field of the specific embodiment of the invention, the low-temperature freezer includes: low
Greenhouse, related freezing equipment and field generator for magnetic.The low temperature chamber and related freezing equipment can be using existing common
Freezing equipment, therefore not to repeat here.
The field generator for magnetic includes generating the first field generating unit of steady magnetic field and generating the of alternating magnetic field
Two field generating units.
The first field generating unit setting corresponding with the second field generating unit makes the steady magnetic field and alternation
Magnetic field forms scheduled angle, and preset composite space magnetic field is generated in the low temperature chamber.
By the composite space magnetic field of formation, the moisture distribution of frozen food can be controlled, avoid in refrigerating process or
The problem of causing food mouthfeel and freshness to decline in course of defrosting.
It should be noted that the low temperature chamber is not limited only to have designated volume, closed refrigerating plant or container,
It specifically can be any suitable, need to carry out food the occasion of cryogenic freezing, such as biggish freezer, reach in freezer etc.
Deng.
It is above-mentioned to keep the principle of food freshness to essentially consist in mangneto supercooling principle using magnetic field.Concrete principle are as follows: due to food
Main ingredient is water in product, and hydrone is connected by hydrogen bond forms a series of strand, has the characteristics that molecular current.Magnetic field
Strand (molecular current) is acted on, Lorentz force is produced to hydrone and is done work, so that lesser water cluster and single
The formation probability of hydrone is greater than big water cluster, and the water containing more small molecule cluster is more stable.
Experiment shows that under the influence of a magnetic field the stability of water increases, and the enhancing of intermolecular hydrogen bonding is effectively offset temperature
Energy exchange during decline allows the water to save at lower temperatures.Below freezing, free water molecule and small point
The presence of submanifold makes crystalline core size that critical radius be not achieved, it is suppressed that surfusion occurs in crystallization process.Make in this magnetic field
Supercooling can allow food not crystallize or non-condensing big crystal grain in cryo-conservation process moisture, ensure that in food molecule not by
Destroy, moisture is not lost etc. him, to maintain the speciality such as the freshness of food.
Specifically, first field generating unit can when needing to form the magnetic field in smaller space or smaller intensity
To include several permanent-magnet materials, the permanent-magnet material is spliced to form the steady magnetic field of the first predetermined space range.
More specifically, when needing to form larger space or the stronger steady magnetic field of intensity, first magnetic field occurs
Unit can also include bistable electromagnetic coil.Corresponding steady magnetic field is generated based on bistable electromagnetic coil.
The bistable electromagnetic coil forms the steady magnetic field of the second predetermined space range after being powered.Specific magnetic field strength can
To be adjusted by the coil or electric current.
In a specific embodiment of the present invention, second field generating unit includes the electromagnetism for generating alternating magnetic field
Transmitting and fairing.By above-mentioned Electromagnetic Launching and commutation technique, the alternating magnetic field of checker can produce.
Above-mentioned steady magnetic field and alternating magnetic field form composite space in low temperature chamber (that is, in freezing chamber) with scheduled angle
Magnetic field.Also that is, the composite space magnetic field can specifically include the intensity of magnetostatic field, the frequency of alternating magnetic field and rotating excitation field
Orientation and the aspect parameter of frequency three adjustment, specific parameter setting can be according to the aqueous of the food freezed
Amount is determined.
Embodiment 1:
As shown in Figure 1, the specific set-up mode of the field generator for magnetic for the specific embodiment of the invention.
The first field generating unit setting forms the first direction point along low temperature chamber in 100 two sides of low temperature chamber
The steady magnetic field of cloth.
The second field generating unit setting forms the alternation being distributed in a second direction in the other two sides of the low temperature chamber
Magnetic field.
The first direction is mutually perpendicular to second direction.That is, steady magnetic field is mutually perpendicular to alternating magnetic field direction.
The pole N 1 of first field generating unit and the pole S 2 of the first field generating unit are mounted on 10 two sides of low temperature chamber,
Steady magnetic field generator is constituted, level steady state magnetic field is generated in low temperature chamber 100.
The pole N 3 of second field generating unit and the pole S 4 of the second field generating unit are mounted on other the two of low temperature chamber 100
Side constitutes alternating magnetic field generator, and the alternating magnetic field 6 of vertical direction is generated in low temperature chamber 100.
It is preferred that can also be revolved around plane where itself between the pole S and the pole N of second field generating unit
Turn, changes the relative position (or projection relation) of the two in vertical direction to realize for alternating magnetic field and ultimately form
Composite space magnetic field adjustment, adapt to the fresh-keeping demand of different food freezings.
Embodiment 2
As shown in Fig. 2, the specific set-up mode of the field generator for magnetic for another specific embodiment of the present invention.
The first field generating unit setting forms the first direction point along low temperature chamber 100 in the low temperature chamber two sides
The steady magnetic field of cloth.
The second field generating unit setting forms the alternation being distributed in a second direction in the other two sides of the low temperature chamber
Magnetic field.
The first direction is parallel with second direction.That is, first field generating unit and the second field generating unit
Conllinear arrangement.Certainly, outer shelly using magnetic conduction material in order to avoid the first field generating unit blocks alternating magnetic field
Material production.
For example, the pole N 7 of the first field generating unit and the pole S 8 of the first field generating unit are mounted on 100 liang of low temperature chamber
Side constitutes steady magnetic field generator, generates level steady state magnetic field.
In the pole N 7 of the first field generating unit and the outside of the pole S 8, the pole N 8 and the of the second field generating unit is installed respectively
The pole S 10 of two field generating units.
Embodiment 3
As shown in figure 3, the specific set-up mode of the field generator for magnetic for still another embodiment of the present invention.
The first field generating unit setting forms the first direction along low temperature chamber 100 in 10 two sides of low temperature chamber
The steady magnetic field of distribution；
Second field generating unit further includes the rotation that a rotating base 210(i.e. pedestal 10 and rotating shaft base 17 are constituted
Turn pedestal) and alternating magnetic field generating device.The alternating magnetic field generating device is arranged on the rotating base, in the rotation
Under the driving of pedestal, rotated in the plane of the first direction.
The alternating magnetic field and angle of the steady magnetic field in the plane of the first direction are with the alternating magnetic field
The rotation of generating device and change.
By the above-mentioned means, can arbitrarily change the angle between alternating magnetic field and steady magnetic field, to constitute corresponding
Composite space magnetic field.
For example, the pole N 14 of the first field generating unit 100 and the pole S 15 of the first field generating unit are mounted on low temperature chamber
100 two sides constitute steady magnetic field generator.The pole N 13 of alternating magnetic field generating device and the pole S 14 of alternating magnetic field generating device are pacified
On pedestal 18.Pedestal 18 is connect with rotating shaft base 17, can be rotated around rotating shaft base 17.
The present invention also provides a kind of food freezing methods for applying low-temperature freezer as described above.Wherein, described
Method includes:
Firstly, the water content according to the food, determines the indoor composite space magnetic field of low temperature.Then, using the magnetic
Field generating device generates corresponding composite space magnetic field, and in the composite space magnetic field, carries out to the food cold
Freeze fresh-keeping.
In conclusion the present invention is being sealed in refrigeration space using permanent-magnet material and Electromagnetic Launching mode combined technology
The resultant field environment for forming steady magnetic field and alternating magnetic field, it is (including magnetostatic using different magnetic field distribution to different water cut article
The adjustment of three intensity of field, the orientation of the frequency of alternating magnetic field and rotating excitation field and frequency aspect parameters), control contains water cooling
Freeze moisture in article to be distributed with it, keep under strict control water loss and distribution change, to realize the good fresh-keeping effect of water-bearing articles.
It, can according to the technique and scheme of the present invention and this hair it is understood that for those of ordinary skills
Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to the guarantor of appended claims of the invention
Protect range.
Claims (8)
1. a kind of low-temperature freezer based on magnetic field, including low temperature chamber and its related freezing equipment, which is characterized in that described low
Warm refrigerating plant further includes a field generator for magnetic, and the field generator for magnetic includes the first magnetic field generation for generating steady magnetic field
Unit and the second field generating unit for generating alternating magnetic field；
The first field generating unit setting corresponding with the second field generating unit makes the steady magnetic field and alternating magnetic field
Scheduled angle is formed, preset composite space magnetic field is generated in the low temperature chamber；Second field generating unit is opposite
First magnetic field units rotate.
2. the low-temperature freezer according to claim 1 based on magnetic field, which is characterized in that first magnetic field occurs single
Member includes several permanent-magnet materials, and the permanent-magnet material is spliced to form the steady magnetic field of the first predetermined space range.
3. the low-temperature freezer according to claim 1 based on magnetic field, which is characterized in that first magnetic field occurs single
Member further includes bistable electromagnetic coil, and the bistable electromagnetic coil forms the steady magnetic field of the second predetermined space range after being powered.
4. the low-temperature freezer according to claim 1 based on magnetic field, which is characterized in that second magnetic field occurs single
Member includes the Electromagnetic Launching and fairing for generating alternating magnetic field.
5. the low-temperature freezer according to claim 1 based on magnetic field, which is characterized in that first magnetic field occurs single
Member setting forms the steady magnetic field being distributed along the first direction of low temperature chamber in the low temperature chamber two sides；
The second field generating unit setting forms the alternation magnetic being distributed in a second direction in the other two sides of the low temperature chamber
?；
The first direction is mutually perpendicular to second direction.
6. the low-temperature freezer according to claim 1 based on magnetic field, which is characterized in that first magnetic field occurs single
Member setting forms the steady magnetic field being distributed along the first direction of low temperature chamber in the low temperature chamber two sides；
The first direction is parallel with second direction.
7. the low-temperature freezer according to claim 1 based on magnetic field, which is characterized in that first magnetic field occurs single
Member setting forms the steady magnetic field being distributed along the first direction of low temperature chamber in the low temperature chamber two sides；
Second field generating unit further includes a rotating base and alternating magnetic field generating device；The alternating magnetic field fills
It installs on the rotating base, under the driving of the rotating base, is rotated in the plane of the first direction；
The alternating magnetic field and angle of the steady magnetic field in the plane of the first direction occur with the alternating magnetic field
The rotation of device and change.
8. a kind of food freezing methods using low-temperature freezer as claimed in claim 1, which is characterized in that institute
The method of stating includes:
According to the water content of the food, the indoor composite space magnetic field of low temperature is determined；
Corresponding composite space magnetic field is generated using the field generator for magnetic, and freeze preservation is carried out to the food.
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| CN201511004878.3A CN105486017B (en) | 2015-12-29 | 2015-12-29 | A kind of low-temperature freezer and its food freezing methods based on magnetic field |
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| CN105486017B true CN105486017B (en) | 2019-08-30 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101728803B1 (en) * | 2016-04-14 | 2017-05-02 | (주)한빛이앤비 | Preservability-improving apparatus based on activating water in cell |
| CN107965960B (en) * | 2017-12-12 | 2019-11-08 | 江南大学 | Based on the controllable cyclically-varying magnetic field auxiliary refrigerating plant of more magnetic poles and application |
| CN108800708A (en) * | 2018-07-30 | 2018-11-13 | 震惶科技（成都）有限公司 | The low frequency alternating magnetic field stable state resonance device fresh-keeping for the cold overlength of fresh food ice |
| CN108844283A (en) * | 2018-08-03 | 2018-11-20 | 震惶科技（成都）有限公司 | The uniform low frequency alternating magnetic field generation device fresh-keeping for the cold overlength of fresh food ice |
| CN109297226A (en) * | 2018-11-15 | 2019-02-01 | 青岛科技大学 | A kind of magnetic field refrigerating plant |
| CN115704639A (en) * | 2021-08-11 | 2023-02-17 | 青岛海尔电冰箱有限公司 | Magnetic field fresh-keeping device and refrigeration equipment |
| CN115176834A (en) * | 2022-07-12 | 2022-10-14 | 南通星诺冷冻设备有限公司 | Food quick freezer capable of continuously conveying |
| CN115428823B (en) * | 2022-07-20 | 2023-06-06 | 中国科学院合肥物质科学研究院 | Step-by-step magnetic field adjusting auxiliary quick-freezing fresh-keeping method and device |
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| JP4243339B2 (en) * | 2005-11-07 | 2009-03-25 | 全国農業協同組合連合会 | Method of cryopreserving mammalian embryos or eggs |
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| JP2003139460A (en) * | 2001-11-01 | 2003-05-14 | Abi:Kk | Variable magnetic field generator, refrigerating device and generation method for constant variable magnetic field |
| CN103248136A (en) * | 2013-05-16 | 2013-08-14 | 天津工业大学 | Distance sensing wireless power supply teaching device |
| US9339027B2 (en) * | 2013-07-30 | 2016-05-17 | California Institute Of Technology | Enhancement of electromagnetic freezing by stabilization and oscillation of biogenic magnetite particles |
| CN104373656A (en) * | 2013-08-12 | 2015-02-25 | 广州市力琪金属制品有限公司 | Self-sustaining coil structure used for valves of four-way valves and two-way valves |
| CN103684033A (en) * | 2013-09-18 | 2014-03-26 | 中国地质大学（北京） | A bridge type high voltage underground electromagnetic field emitter with a plurality of power switch devices in series connection. |
| CN105090596B (en) * | 2014-05-14 | 2018-04-27 | 浙江三花制冷集团有限公司 | Solenoid valve and bistable electro magnetic coil |
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| JP4243339B2 (en) * | 2005-11-07 | 2009-03-25 | 全国農業協同組合連合会 | Method of cryopreserving mammalian embryos or eggs |
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