CN107758059A - Food freezing and fresh-keeping device using magnetic field and micro-freezing liquid - Google Patents
Food freezing and fresh-keeping device using magnetic field and micro-freezing liquid Download PDFInfo
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- CN107758059A CN107758059A CN201711179170.0A CN201711179170A CN107758059A CN 107758059 A CN107758059 A CN 107758059A CN 201711179170 A CN201711179170 A CN 201711179170A CN 107758059 A CN107758059 A CN 107758059A
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- Prior art keywords
- food
- magnetic field
- microrefrigerating fluid
- microrefrigerating
- freezing
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- 235000013305 food Nutrition 0.000 title claims abstract description 88
- 238000007710 freezing Methods 0.000 title claims abstract description 27
- 230000008014 freezing Effects 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 title abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 8
- 229920002101 Chitin Polymers 0.000 claims abstract description 5
- 239000011780 sodium chloride Substances 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 72
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 238000005057 refrigeration Methods 0.000 claims description 29
- 229910052742 iron Inorganic materials 0.000 claims description 20
- 238000004321 preservation Methods 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 9
- 239000012774 insulation material Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 241000251468 Actinopterygii Species 0.000 claims description 4
- 230000006378 damage Effects 0.000 claims description 4
- 235000013399 edible fruits Nutrition 0.000 claims description 4
- 235000013611 frozen food Nutrition 0.000 claims description 4
- 235000013372 meat Nutrition 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 241000238557 Decapoda Species 0.000 claims description 3
- 244000132436 Myrica rubra Species 0.000 claims description 3
- 240000000851 Vaccinium corymbosum Species 0.000 claims description 3
- 235000003095 Vaccinium corymbosum Nutrition 0.000 claims description 3
- 235000017537 Vaccinium myrtillus Nutrition 0.000 claims description 3
- 235000021014 blueberries Nutrition 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 210000004243 sweat Anatomy 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 5
- 210000000170 cell membrane Anatomy 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 10
- 238000010257 thawing Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 235000015110 jellies Nutrition 0.000 description 4
- 239000008274 jelly Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241000143060 Americamysis bahia Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 235000021267 food by temperature Nutrition 0.000 description 1
- 230000009246 food effect Effects 0.000 description 1
- 235000021471 food effect Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000003239 periodontal effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/06—Freezing; Subsequent thawing; Cooling
- A23B4/066—Freezing; Subsequent thawing; Cooling the materials not being transported through or in the apparatus with or without shaping, e.g. in the form of powder, granules or flakes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/04—Freezing; Subsequent thawing; Cooling
- A23B7/0425—Freezing; Subsequent thawing; Cooling the material not being transported through or in the apparatus, with or without shaping, e.g. in the form of powder, granules or flakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
- B65D85/34—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
-
- 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
- F25D31/00—Other cooling or freezing apparatus
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Food Science & Technology (AREA)
- Zoology (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
The invention discloses a food freezing and fresh-keeping device using a magnetic field and micro-freezing liquid. The magnetic field generating device uses Helmholtz coils to generate a magnetic field, uses a pair of coils to generate a spatially uniform magnetic field, and uses direct current converted from alternating current to drive the Helmholtz coils and adjust the magnetic field intensity by changing the size of the direct current. The container with the micro-freezing liquid is provided with a disturbing device, and the micro-freezing liquid consists of sodium chloride, ethanol with the concentration of 98%, chitin and water according to a certain proportion. The invention makes the water content of the water-containing food keep the original distribution state in the freezing process by placing the food in the micro-freezing liquid and setting the magnetic field with the preset strength, avoids the water content and the loss of tissue liquid caused by the puncture of cell membranes by large ice crystals formed by the water content, and can better keep the freshness of the food before freezing.
Description
Technical field
The present invention relates to the refrigeration fresh-keeping technique field of meat, fish and shrimp and Some Fruits, more particularly to one kind to make
With magnetic field and the food product refrigeration preservation device and its preservation method of microrefrigerating fluid, belong to cold chain preservation field.
Background technology
With the development of science and technology, to the quality requirement more and more higher of chilled food, wherein the freezing of aqueous food is one
It is badly in need of the major issue solved.In the refrigerating process of food, after the loss and defrosting of moisture moisture in food again
It is arranged evenly to have a strong impact on freshness and mouthfeel after food freezing.Though this, which is due to food, to preserve for a long time at low temperature,
But damaged easily during cooling and defrosting by the effect of the factors such as freezing solution, thawing and solution osmotic pressure change
Hinder cell.In 0--60 DEG C of this section " dangerous temperature area ", cell easily forms larger ice crystal structure and punctures cell membrane, destroys
Cell film activity, cause food when thawing, the loss of the composition such as moisture and nutrition in film, influence the mouthfeel, fresh of food
Degree etc..Therefore, existing Refrigeration Technique can not solve the problems, such as to form ice crystal, also can not just ensure the mouthfeel of frozen food.
In view of the above-mentioned problems, the method that the preservation that people, which are directed to research, can make food fresh is gone down.2010, Kaku
M etc. using cas system, (under magnetic fields to material enter by Cell Alive System, Japanese ABI companies exploitation in 2005
Row freezing device) provide 0.01mT low-intensity magnetic fields concentration be 10% dimethyl suflfate (Me2SO4) tough to periodontal in solution
7d cryogenic freezing (- 150 DEG C) is carried out with cell, is found after defrosting, compared with being not added with the freezing of magnetic field, under 0.01mT magnetic fields
The sample freezed, the cell tissue survival rate after it thaws are higher.But it is long the time required to invention freezing, it is not easy to put into
Used in actual production process.The skilful treasure of woods in 2015, which have developed, a kind of can be used for the quick-frozen microrefrigerating fluid of food low-temperature and its makes
Use method.It is invented CN201510300849.5 and provides a kind of quick-frozen microrefrigerating fluid of food low-temperature.It can make within the extremely short time
The heat for being frozen article conducts digestion by microrefrigerating fluid, makes to generate area by the ice crystal of maximum within the shortest time by jelly food,
Make the pressure inside and outside food cell is relative to reach balance, protection is frozen the cell tissue of article, keeps cytoactive, ensures to be frozen
The fresh and alive quality of article, retains former nutritional ingredient.But this invention still can not make food possess optimal mouth after culinary art of thawing
Sense.
The shortcomings that being invented for above-mentioned two research, it is cold that the invention then discloses a kind of food using magnetic field and microrefrigerating fluid
To freeze preservation device, preferably solve the problems, such as water loss in food, farthest protection is frozen the cell tissue of food,
Cytoactive is kept, plays freezing and fresh-keeping double action.Simultaneity factor is simple in construction, can be fused in cold chain transportation, make
Cold chain coordinates transport to become more quick, efficient.
The content of the invention
It is a kind of using magnetic field and microrefrigerating fluid it is an object of the invention to invent in view of in place of above-mentioned the deficiencies in the prior art
Food product refrigeration preservation device, it is intended to preferably solve the problems, such as water loss in food, farthest protection is frozen food
Cell tissue, keep cytoactive, play freezing and fresh-keeping double action.It is coordinated with small-sized cold chain simultaneously and transported
It is combined, makes cold chain coordinate transport to become more quick, efficient.
Freezing section includes iron insulation box (1), insulation material (2), Helmholtz coil (3), holds microrefrigerating fluid container
(4), temperature sensor (5), food (6), porous objective table (7), electric mixing device (8), agitating device power supply (9), electric current
Table (10), AC/DC convertor (11), voltmeter (12), refrigeration unit (13).Wherein insulation material (2) is covered in iron insulated case
Among body (1), Helmholtz coil (3) is in the left and right sides of internal iron insulation box layer (1), and Helmholtz coil (3)
It is internal in iron insulation box (1), hold the centre that microrefrigerating fluid container (4) is located at Helmholtz coil (3), temperature sensor
(5) have three, be respectively placed in microrefrigerating fluid, food center and foodstuff surface, food (6) be placed in porous objective table (7) it
On, for porous objective table (7) positioned at microrefrigerating fluid container (4) is held close at bottom, electric mixing device (8), which is installed on, holds micro- jelly
Liquid container (4) bottom.Ammeter (10) and voltmeter (12) are located on AC/DC convertor (11), and refrigeration unit (13) is evaporation
Kind of refrigeration cycle unit, it is connected with casing (1).
The operating temperature section of microrefrigerating fluid employed in the invention is -40 to -45 DEG C, so needing to insulate inner side iron
The internal temperature setting of casing (1) is between -40 DEG C to -45 DEG C, to ensure that microrefrigerating fluid has given play to best effect.Eaten in freezing
Refrigeration unit (13) is first turned on during thing, after running a period of time so that (1) temperature and the temperature of microrefrigerating fluid (4) are steady in case
It is scheduled between this operating temperature, then the food that need to be freezed is put into microrefrigerating fluid (4).The equipment mainly applies to meat, fish
Shrimps and part need the fruit of refrigeration transportation such as：Red bayberry, blueberry, lichee.Helmholtz coil (3) therein passes through alternating current-direct current
Converter (11) obtains the direct current of certain voltage and electric current to be used to produce magnetic field, and passes through ammeter (10) and voltmeter
(12) magnetic field conditions are directly monitored in real time.Food need to be immersed when freezing simultaneously among holding microrefrigerating fluid container (4), used is micro-
Freeze liquid be by 8%-15% sodium chloride, 1%-5% ethanol (98% concentration), 1%-3% chitin and water according to certain
Ratio reconciles and formed.During for cooling time without particular/special requirement (can wait as long for), food can be placed directly within field region
It is interior, without immersing microrefrigerating fluid；When needing food quick-frozen in a short time, then magnetic field and both microrefrigerating fluids can be combined.Two
Whether the action time of kind of method is reached by food therein central temperature is stable at 0 DEG C and is defined, when its central temperature is substantially opened
When beginning descends below 0 DEG C, food phase transition process terminates, and now can closes magnetic field, in the lump will if food is in microrefrigerating fluid
Food takes out from microrefrigerating fluid, when finally being cooked when that need to take out food, then all closes all power supplys in the device, will
Food takes out out of casing, thaw after the completion of.
, need to be in microrefrigerating fluid, food center and foodstuff surface reload temperature sensor before being freezed to food (6)
(5), with the temperature variations at monitoring three in real time.The temperature sensor for being wherein installed on food center is used to monitor food in real time
Thing central temperature, it is ultimately used to determine the termination of refrigerating process.
It must be constantly in out in refrigerating process positioned at the electric mixing device (8) for holding microrefrigerating fluid container (4) bottom
State is opened, to ensure the uniformity of temperature profile of microrefrigerating fluid and the good fluidity of holding foodstuff surface microrefrigerating fluid in container.
Positioned at hold porous objective table (7) effect of the microrefrigerating fluid container (4) close to bottom be to make up and down solution turn into and connect
Continuous medium, the solution on top can also stir with the flowing of bottom, while avoid food (6) from being stirred device and destroy even
Cause the damage of agitating device.It can take first to encapsulate for the less food of build (6) and be positioned over again on orifice plate, avoid eating
Thing (6) enters bottom disturbance region.
Alternating current size is adjusted by AC/DC convertor (11) so that the direct current of output also changes therewith, output
DC voltage can be read by voltmeter (12) and ammeter (10) respectively with electric current.So as to control and adjust the strong of magnetic field
Degree.
Iron insulation box (1) can completely cut off magnetic field, magnetic field is not interfered with around refrigerating plant, and magnetic field is only insulated to iron
There is effect inside casing (1).
Microrefrigerating fluid be by 8%-15% sodium chloride, 1%-5% ethanol (98% concentration), 1%-3% chitin and
Water reconciles form according to a certain percentage, and operating temperature section is -40 DEG C to -45 DEG C.
Brief description of the drawings
Fig. 1 is a kind of using magnetic field and the food product refrigeration preservation device schematic diagram of microrefrigerating fluid；
Label title in figure：1st, iron insulation box；2nd, insulation material；3rd, Helmholtz coil；4th, microrefrigerating fluid appearance is held
Device；5th, temperature sensor；6th, food；7th, porous objective table；8th, electric mixing device；9th, agitating device power supply；10th, ammeter；
11st, AC/DC convertor；12nd, voltmeter；13rd, refrigeration unit.
Embodiment
It is a kind of using magnetic field and the food product refrigeration preservation device of microrefrigerating fluid, its feature as shown in figure 1, of the present invention
It is to include freezing section：1st, iron insulation box；2nd, insulation material；3rd, Helmholtz coil；4th, microrefrigerating fluid container is held；5th, temperature
Sensor；6th, food；7th, porous objective table；8th, electric mixing device；9th, agitating device power supply；10th, ammeter；11st, alternating current-direct current
Converter；12nd, voltmeter；13rd, refrigeration unit.Wherein insulation material 2 is covered among iron insulation box 1, Helmholtz coil 3
In the left and right sides of internal iron insulation box layer 1, and Helmholtz coil 3 is in inside iron insulation box 1, holds microrefrigerating fluid
Container 4 is located at the centre of Helmholtz coil 3, and temperature sensor 5 has three, be respectively placed in microrefrigerating fluid, food center with
And foodstuff surface, food 6 are placed on porous objective table 7, porous objective table 7, which is located at, holds microrefrigerating fluid container 4 close at bottom,
Electric mixing device 8, which is installed on, holds the bottom of microrefrigerating fluid container 4, and ammeter 10 and voltmeter 12 are located at AC/DC convertor 11
On, refrigeration unit 13 is sweat cooling Cycle Unit, is connected with casing 1.
The operating temperature section of microrefrigerating fluid employed in the invention is -40 to -45 DEG C, so needing to insulate inner side iron
Temperature setting inside casing 1 is between -40 DEG C to -45 DEG C, to ensure that microrefrigerating fluid has given play to best effect.In frozen food
When first turn on refrigeration unit 13, after running a period of time so that the temperature stabilization of 1 temperature and microrefrigerating fluid 4 is at this in case
Between operating temperature, then the food that need to be freezed is put into microrefrigerating fluid 4.The equipment mainly applies to meat, fish and shrimp and portion
Point need the fruit of refrigeration transportation such as：Red bayberry, blueberry, lichee.Helmholtz coil 3 therein is obtained by AC/DC convertor 11
The direct current of certain voltage and electric current directly monitors magnetic in real time to be used to produce magnetic field by ammeter 10 and voltmeter 12
Field situation.Food need to be immersed when freezing simultaneously among holding microrefrigerating fluid container 4, microrefrigerating fluid used is the chlorine by 8%-15%
Change sodium, 1%-5% ethanol (98% concentration), 1%-3% chitin and water reconcile form according to a certain percentage.Magnetic field with it is micro-
The effect for freezing both liquid is to promote the phase transformation stage and reduces the Ice crystal size formed, can keep food well
Freshness.
The present invention has two kinds of mode of operations, one is when needing food quick-frozen in a short time, by magnetic field and micro- jelly
Both liquid is used in combination, and this method can be very good to save the time freezed, later stage transport of instant food etc..Magnetic field and micro-
Freeze whether action time for coordinating of both liquid is reached by food therein central temperature and be stable at 0 DEG C and be defined, this be due to magnetic field with
Freeze the stage when microrefrigerating fluid is that food central temperature is maintained at 0 DEG C for the effective procedure of food effect, when its center
When temperature is substantially begun to decline less than 0 DEG C, food phase transition process terminates, and now can closes magnetic field, and by food from micro- jelly
Take out and be placed in in general freezing environment in liquid.So before being freezed to food, need to be in food center reload temperature
Sensor, to monitor its temperature variations in real time.When the holonomic system is when small-sized cooperation cold chain transportation is combined, also may be used
Control automatics to implement to pick up work for food by temperature sensor, freezing is completed during transport, save
The cold insulation cost gone before transport so that coordinate cold chain transportation to become more convenient, efficient.
And during for cooling time without particular/special requirement (can wait as long for), second method can be used：By food
It is placed directly within field region and does not immerse microrefrigerating fluid, reduces the loss of microrefrigerating fluid, reduce cost.The time of effect is also with food
Whether inside center temperature, which reaches, is stable at 0 DEG C and is defined, when its central temperature is substantially begun to decline less than 0 DEG C, food phase transformation
Process terminates, and now can closes magnetic field.
Positioned at hold porous objective table 7 effect of the microrefrigerating fluid container 4 close to bottom be to make up and down solution turn into continuous and be situated between
Matter, the solution on top can also stir with the flowing of bottom, while avoid food 6 from being stirred device destruction or even cause and stir
Mix the damage of device.It can take first to encapsulate for the less food of build 6 and be positioned over again on orifice plate, avoid food 6 from entering
Bottom disturbance region.
Pass through AC/DC convertor 11 adjust alternating current size so that the direct current of output also changes therewith, output it is straight
Stream piezoelectric voltage can be read by voltmeter 12 and ammeter 10 respectively with electric current, so as to control and adjust the intensity in magnetic field.It is and right
In different food, the magnetic field intensity of use is also not quite similar, it is necessary to be determined according to the type of individual and water content.
Claims (8)
1. a kind of use magnetic field and the food product refrigeration preservation device of microrefrigerating fluid, it is characterised in that：
Including iron insulation box (1), insulation material (2), Helmholtz coil (3), hold microrefrigerating fluid container (4), TEMP
Device (5), food (6), porous objective table (7), electric mixing device (8), agitating device power supply (9), ammeter (10), alternating current-direct current
Converter (11), voltmeter (12), refrigeration unit (13)；Wherein insulation material (2) is covered among iron insulation box (1), the last of the twelve Earthly Branches
Mu Huozi coils (3) are in the left and right sides of internal iron insulation box layer (1), and Helmholtz coil (3) is in iron insulated case
Body (1) is internal, holds the centre that microrefrigerating fluid container (4) is located at Helmholtz coil (3), and temperature sensor (5) has three, respectively
It is positioned in microrefrigerating fluid, food center and foodstuff surface, food (6) are placed on porous objective table (7), porous objective table
(7) positioned at microrefrigerating fluid container (4) is held close at bottom, electric mixing device (8), which is installed on, holds microrefrigerating fluid container (4) bottom
Portion, ammeter (10) and voltmeter (12) are located on AC/DC convertor (11), and refrigeration unit (13) is sweat cooling circulator
Group, it is connected with casing (1).
A kind of magnetic field and the food product refrigeration preservation device of microrefrigerating fluid are used 2. according to claim 1, it is characterised in that bag
Containing following running：
The operating temperature section of microrefrigerating fluid employed in the invention is -40 to -45 DEG C, so needing inner side iron insulation box
(1) internal temperature setting is between -40 DEG C to -45 DEG C, to ensure that microrefrigerating fluid has given play to best effect；In frozen food
Refrigeration unit (13) is first turned on, after running a period of time so that the temperature stabilization of (1) temperature and microrefrigerating fluid (4) exists in case
Between this operating temperature, then the food that need to be freezed is put into microrefrigerating fluid (4)；The equipment mainly applies to meat, fish and shrimp
And part needs the fruit of refrigeration transportation such as：Red bayberry, blueberry, lichee；Helmholtz coil (3) therein passes through ac-dc conversion
Device (11) obtains the direct current of certain voltage and electric current to be used to produce magnetic field, and passes through ammeter (10) and voltmeter (12)
Magnetic field conditions are directly monitored in real time；Food need to be immersed when freezing and held among microrefrigerating fluid container (4) simultaneously；For cooling time
During without particular/special requirement (can wait as long for), food can be placed directly within field region, without immersing microrefrigerating fluid；When needing to eat
When thing is quick-frozen in a short time, then magnetic field and both microrefrigerating fluids can be combined to the time of effect of two methods with food
Whether portion's central temperature, which reaches, is stable at 0 DEG C and is defined, when its central temperature is substantially begun to decline less than 0 DEG C, food phase transformation
Journey terminates, and now can closes magnetic field, takes out food from microrefrigerating fluid in the lump if food is in microrefrigerating fluid；Finally wait until
Need to by food take out cook when, all power supplys in the device are all closed, food is taken out out of casing, thaw after the completion of be
Can.
A kind of magnetic field and the food product refrigeration preservation device of microrefrigerating fluid are used 3. according to claim 1, it is characterised in that：
Before being freezed to food (6), need in microrefrigerating fluid, food center and foodstuff surface reload temperature sensor (5),
To monitor the temperature variations at three in real time；The temperature sensor for being wherein installed on food center is used in real-time monitoring food
Heart temperature, it is ultimately used to determine the termination of refrigerating process.
A kind of magnetic field and the food product refrigeration preservation device of microrefrigerating fluid are used 4. according to claim 1, it is characterised in that：
Opening state must be constantly in refrigerating process positioned at the electric mixing device (8) for holding microrefrigerating fluid container (4) bottom
State, to ensure the uniformity of temperature profile of microrefrigerating fluid and the good fluidity of holding foodstuff surface microrefrigerating fluid in container.
A kind of magnetic field and the food product refrigeration preservation device of microrefrigerating fluid are used 5. according to claim 1, it is characterised in that：
Positioned at hold porous objective table (7) effect of the microrefrigerating fluid container (4) close to bottom be to make up and down solution turn into continuous and be situated between
Matter, the solution on top can also stir with the flowing of bottom, while avoid food (6) from being stirred device and destroy or even cause
The damage of agitating device；It can take first to encapsulate for the less food of build (6) and be positioned over again on orifice plate, avoid food
(6) bottom disturbance region is entered.
A kind of magnetic field and the food product refrigeration preservation device of microrefrigerating fluid are used 6. according to claim 1, it is characterised in that：
Alternating current size is adjusted by AC/DC convertor (11) so that the direct current of output also changes therewith, the direct current of output
Piezoelectric voltage can be read by voltmeter (12) and ammeter (10) respectively with electric current, the intensity in system and regulation magnetic field.
A kind of magnetic field and the food product refrigeration preservation device of microrefrigerating fluid are used 7. according to claim 1, it is characterised in that：
Iron insulation box (1) can completely cut off magnetic field, magnetic field is not interfered with around refrigerating plant, and magnetic field is only to iron insulation box
(1) it is internal to have effect.
A kind of magnetic field and the food product refrigeration preservation device of microrefrigerating fluid are used 8. according to claim 1, it is characterised in that：
Microrefrigerating fluid by 8%-15% sodium chloride, 1%-5% ethanol (98% concentration), 1%-3% chitin and water according to
Certain proportion reconciles and formed, and operating temperature section is -40 DEG C to -45 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179170.0A CN107758059A (en) | 2017-11-20 | 2017-11-20 | Food freezing and fresh-keeping device using magnetic field and micro-freezing liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711179170.0A CN107758059A (en) | 2017-11-20 | 2017-11-20 | Food freezing and fresh-keeping device using magnetic field and micro-freezing liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107758059A true CN107758059A (en) | 2018-03-06 |
Family
ID=61280332
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711179170.0A Pending CN107758059A (en) | 2017-11-20 | 2017-11-20 | Food freezing and fresh-keeping device using magnetic field and micro-freezing liquid |
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| Country | Link |
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| CN (1) | CN107758059A (en) |
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| CN108981266A (en) * | 2018-09-25 | 2018-12-11 | 长虹美菱股份有限公司 | A kind of freeze preservation refrigerator and its control method |
| CN113229508A (en) * | 2021-03-31 | 2021-08-10 | 天津市农业科学院 | Fruit and vegetable microenvironment multi-field browning prevention device |
| CN115487530A (en) * | 2022-09-22 | 2022-12-20 | 天津科技大学 | Ethylene carbonate melt crystallization system and process |
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| CN115487530A (en) * | 2022-09-22 | 2022-12-20 | 天津科技大学 | Ethylene carbonate melt crystallization system and process |
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Application publication date: 20180306 |