CN113758104A - Novel pulse magnetic field assisted freezing fresh-keeping refrigerator - Google Patents
Novel pulse magnetic field assisted freezing fresh-keeping refrigerator Download PDFInfo
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- CN113758104A CN113758104A CN202110907413.8A CN202110907413A CN113758104A CN 113758104 A CN113758104 A CN 113758104A CN 202110907413 A CN202110907413 A CN 202110907413A CN 113758104 A CN113758104 A CN 113758104A
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- magnetic field
- refrigerator
- field generating
- freezing
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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
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
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- 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
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a novel pulsed magnetic field assisted freezing and fresh-keeping refrigerator which comprises a refrigerator body, wherein a refrigerating system is arranged in the refrigerator body, a pulsed magnetic field generating system is also arranged in the refrigerator body and comprises at least one group of magnetic field generating units, each group of magnetic field generating units comprises a plurality of magnetic field generating coils 3 distributed around the refrigerator body, and the magnetic field generating coils 3 of each group of magnetic field generating units are connected with a pulsed power supply and generate a pulsed magnetic field in an inner cavity of the refrigerator. The invention changes the metabolism of food cells, thereby effectively inhibiting apoptosis and prolonging the preservation time of food. Meanwhile, the pulsed magnetic field has the effects of improving the crystallization rate, reducing the size of ice crystals and enabling the ice crystals to be distributed more uniformly, and is beneficial to maintaining freshness and flavor in the process of freezing meat.
Description
Technical Field
The invention relates to a fresh-keeping refrigerator, in particular to a novel pulse magnetic field assisted freezing fresh-keeping refrigerator.
Background
At present, along with the improvement of the living standard of residents, people put forward higher requirements on the preservation quality of food materials. In order to solve the problem of food storage, especially the problem of meat quality degradation during the freezing storage process, advanced food freezing storage technology and diversified food cold chain system have become the focus of the world research. Magnetic fields are a common physical field and studies have shown that the assistance of magnetic fields has a significant impact on the process of frozen storage of food products due to the magnetic effect of living beings. The proper magnetic field intensity can change the physicochemical properties of biological macromolecules and cell membranes, can effectively remove free radicals, improves the fresh-keeping quality of food, and prolongs the shelf life. Meanwhile, the magnetic field can influence the freezing process of water, reduce the size of ice crystals formed in the freezing process of food, effectively reduce the freezing loss of the food and improve the quality of the frozen food. The pulse magnetic field can change the cell membrane structure of the meat product, so that the metabolism of food cells is changed, the apoptosis is effectively inhibited, and the food preservation time is prolonged; meanwhile, the pulsed magnetic field has the effects of improving the crystallization rate, reducing the size of ice crystals and enabling the ice crystals to be distributed more uniformly, and is beneficial to maintaining freshness and flavor in the process of freezing meat. Therefore, the development of the magnetic field assisted freezing technology has great potential research value.
At present, most of commercial freezers and refrigerators adopt parameters such as humidity and temperature to inhibit the respiration rate of food to prolong the preservation time of the food, but the freezing preservation method cannot solve the problems that the frozen ice crystals of meat have large size and the meat quality is kept fresh and tender. The prior freezing and fresh-keeping technology using a Helmholtz coil to generate a magnetic field has the defects of large heat, large mass, heavy whole body and poor wide application. There is a need for new freezing and refrigeration technologies that improve the storage performance of existing freezing devices.
Disclosure of Invention
The invention provides a novel pulsed magnetic field assisted freezing and fresh-keeping refrigerator for solving the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows: the utility model provides a novel supplementary freezing fresh-keeping refrigerator of pulsed magnetic field, includes the refrigerator body, this internal refrigerating system that is equipped with of refrigerator, this internal pulsed magnetic field that still is equipped with of refrigerator takes place the system, and pulsed magnetic field takes place the system and includes at least a set of magnetic field generation unit, and every magnetic field generation unit of group includes that a plurality of distributes at refrigerator body magnetic field generation coil all around, and the magnetic field generation coil of every magnetic field generation unit of group inserts pulsed power supply to generate pulsed magnetic field in the refrigerator inner chamber.
Furthermore, a refrigerating chamber inner cavity and a freezing chamber inner cavity are arranged in the refrigerator body; the refrigerating chamber inner cavity and the freezing chamber inner cavity are respectively provided with a group of magnetic field generating units.
Furthermore, each group of magnetic field generating units comprises four magnetic field generating coils and two parallel steel plates; each magnetic field generating coil comprises a column-type iron core and a coil wound on the iron core; two parallel steel plates are attached to the upper side, the lower side or the left side and the right side of the inner cavity of the refrigerator body, and four iron cores are respectively and vertically fixedly connected to four corners of the steel plates.
Further, the outer surface of the steel plate is provided with a protective coating.
Furthermore, the pulse magnetic field generating system also comprises a pulse power supply, and the pulse power supply is a variable-frequency variable-voltage pulse power supply.
Furthermore, the magnetic field intensity of the pulse magnetic field generated by each group of magnetic field generating units is 0-1000 GS.
Further, the frequency range of the pulse magnetic field generated by each group of magnetic field generating units is 0-100 KHz.
Further, the refrigerating system comprises a compressor, a dew removing pipe, a condenser, a drying filter, an electromagnetic valve, a refrigerating chamber capillary tube, a refrigerating chamber evaporator, a freezing chamber capillary tube and a freezing chamber evaporator which are sequentially connected.
The invention has the advantages and positive effects that:
1. the pulse magnetic field has stronger biological effect than a constant magnetic field, has stronger penetrating power for food and can deeply penetrate into the food for sterilization. The pulse magnetic field can change the cell membrane structure of meat products, so that the metabolism of food cells is changed, the apoptosis is effectively inhibited, and the preservation time of food is prolonged. Meanwhile, the pulsed magnetic field has the effects of improving the crystallization rate, reducing the size of ice crystals and enabling the ice crystals to be distributed more uniformly, and is beneficial to maintaining freshness and flavor in the process of freezing meat.
2. Compared with other magnetic field auxiliary refrigerators using Helmholtz coils, the refrigerator has the advantages that the magnetic field transmitting coil part has small mass, the space between the refrigerators is not limited, the size of a steel plate is not limited, and the magnetic field transmitting coils with different sizes can be adopted according to the refrigerators with different sizes; the magnetic field transmitting coil occupies a small space, and can effectively ensure the space utilization rate of the refrigerator.
3. For different foods, different optimal magnetic field strengths and frequencies are selected, one-key switching can be performed through buttons on a display panel, and the device is simple and convenient to operate and high in pertinence.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of a portion a of fig. 1.
Fig. 3 is a schematic structural diagram of a pulsed magnetic field generating system according to the present invention.
In the figure: 1. an iron core; 2. a steel plate; 3. a coil; 4. an upper side door of the refrigerator; 5. a refrigerating chamber; 6. a lower side door of the refrigerator; 7. and (4) freezing the chamber.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are enumerated in conjunction with the accompanying drawings, and the following detailed description is given:
referring to fig. 1 to 3, a novel pulsed magnetic field assisted refrigerator for freezing and refreshing comprises a refrigerator body, a refrigeration system is arranged in the refrigerator body, a pulsed magnetic field generation system is further arranged in the refrigerator body and comprises at least one group of magnetic field generation units, each group of magnetic field generation units comprises a plurality of magnetic field generation coils 3 distributed around the refrigerator body, and the magnetic field generation coils 3 of each group of magnetic field generation units are connected to a pulse power supply and generate a pulsed magnetic field in an inner cavity of the refrigerator.
Furthermore, the refrigerator body can be internally provided with an inner cavity of a refrigerating chamber 5 and an inner cavity of a freezing chamber 7; the inner cavity of the refrigerating chamber 5 and the inner cavity of the freezing chamber 7 can be respectively provided with a group of magnetic field generating units. The inner cavity of the refrigerating chamber 5 is sealed by an upper side door 4 of the refrigerator; the inner cavity of the freezing chamber 7 is sealed by a lower side door 6 of the refrigerator.
Further, each set of magnetic field generating units may include four magnetic field generating coils 3 and two parallel steel plates 2; each magnetic field generating coil 3 may include a columnar iron core 1 and a coil 3 wound around the iron core 1; two parallel steel sheets 2 can be attached to the upper and lower or left and right inner side surfaces of the inner cavity of the refrigerator body, and four iron cores 1 can be respectively and vertically fixedly connected with four corners of the steel sheets 2. The magnetic field generating unit may also adopt other prior art structures. The four iron cores 1 can be respectively and vertically fixedly connected to the four corners of the steel plate 2; the two parallel steel plates 2 can be attached to the upper side, the lower side or the left side and the right side of the inner cavity of the refrigerator body, so that the space enclosed by the four iron cores 1 and the two parallel steel plates 2 is positioned in the pulse magnetic field, food can be placed in the space, and the voltage and the frequency at the two ends of the coil 3 can be regulated and controlled; the current flowing through the two ends of the coil 3 is adjusted to adjust the intensity and duration of the magnetic field, and the generated pulse magnetic field can change the cell membrane structure of meat products and change the metabolism of food cells, thereby effectively inhibiting apoptosis and prolonging the duration of food preservation; meanwhile, the pulsed magnetic field has the effects of improving the crystallization rate, reducing the size of ice crystals and enabling the ice crystals to be distributed more uniformly, and is beneficial to maintaining freshness and flavor in the process of freezing meat.
Further, the outer surface of the steel plate 2 may be provided with a protective coating.
Furthermore, the pulse magnetic field generation system can also comprise a pulse power supply, and the pulse power supply can be a variable-frequency variable-voltage pulse power supply. The variable-frequency variable-voltage pulse power supply can be formed by a product in the prior art, such as a YF630 alternating-current variable-frequency power supply produced by Shenzhen Yang Macro electric Limited. The variable-frequency variable-voltage pulse power supply can also be constructed by components in the prior art according to the conventional technical means. For example, the variable-frequency variable-voltage pulse power supply is built by adopting the following components: the single chip microcomputer, the pulse frequency regulator, the pulse amplitude regulator, the display and the power switch module are connected with the single chip microcomputer; the singlechip is used for generating a pulse signal; the pulse frequency regulator is used for setting the frequency of the pulse signal; the pulse amplitude regulator is used for setting the amplitude of the pulse signal; the display is used for displaying the frequency and the amplitude of the pulse signal; the single chip microcomputer receives signals from the pulse frequency regulator and the pulse amplitude regulator and sends pulse signals to the display and the power switch module. The pulse signal controls the on-off time of the power switch module, so that the output voltage and the output frequency of the power switch module are controlled. The pulse frequency regulator and the pulse amplitude regulator can be potentiometers and can also be digital keys.
Furthermore, the magnetic field intensity of the pulse magnetic field generated by each group of magnetic field generating units can be 0-1000 GS.
Further, the frequency range of the pulse magnetic field generated by each set of magnetic field generating units can be 0-100 KHz.
Further, the refrigerating system can comprise a compressor, a dew removing pipe, a condenser, a drying filter, an electromagnetic valve, a refrigerating chamber 5 capillary tube, a refrigerating chamber 5 evaporator, a freezing chamber 7 capillary tube and a freezing chamber 7 evaporator which are connected in sequence.
The structure and operation of the present invention will be further described with reference to a preferred embodiment of the present invention:
as shown in fig. 1 to fig. 3, a novel pulsed magnetic field assisted refrigerator for freezing and refreshing comprises a magnetic field transmitting coil 3 which is composed of four cylindrical iron cores 1, a coil 3 wound on the iron cores and two parallel steel plates 2. Coil 3 is the enameled wire, and the winding is on cylindrical core 1, and after 3 circular telegrams of coil, the iron core both ends are conducted in magnetic field, and two steel sheets 2 can be tightly inhaled at the iron core both ends by magnetic field, can establish a comparatively even magnetic field region between the steel sheet 2, adjust magnetic field intensity through increase or reduction voltage. The distance of the steel plates 2 is determined by the distance of the internal space of the refrigerator, and the distances of the four cylindrical iron cores 1 except the opposite angles are equal in pairs, so that a relatively uniform magnetic field is formed. The magnetic field transmitting coil 3 can generate a pulse magnetic field with the magnetic field intensity of 0-1000GS, and the frequency adjusting range is 0-100 KHz. Different magnetic field strengths and frequencies are selected according to different foods so as to achieve the optimal fresh-keeping effect.
The magnetic field emission coil 3 is partially installed in the refrigerating chamber 5 and the freezing chamber 7 of the refrigerator. The steel plate 2 is attached to the inner surfaces of the refrigerating chamber 5 and the freezing chamber 7 of the refrigerator, and the outer surface of the steel plate 2 is provided with a protective coating and is not in direct contact with food. The coil 3 can be partially covered by an insulating shell, so that the influence on the use space of the refrigerator is reduced as much as possible, and the use sense can not be influenced. Compared with the traditional magnetic field auxiliary refrigeration refrigerator, the magnetic field transmitting coil 3 is convenient to install, has light weight far than magnetic field generators such as a Helmholtz coil 3 and is more easily accepted by the people.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (8)
1. The utility model provides a novel supplementary freezing fresh-keeping refrigerator of pulsed magnetic field, includes the refrigerator body, this internal refrigerating system that is equipped with of refrigerator, its characterized in that, this internal pulsed magnetic field that still is equipped with of refrigerator takes place the system, and pulsed magnetic field takes place the system and includes at least a set of magnetic field generating unit, and every magnetic field generating unit of group includes that a plurality of distributes at refrigerator body magnetic field generating coil all around, and the magnetic field generating coil of every magnetic field generating unit of group inserts pulse power to generate pulsed magnetic field in the refrigerator inner chamber.
2. The refrigerator according to claim 1, wherein the refrigerator body has a refrigerating chamber inner chamber and a freezing chamber inner chamber; the refrigerating chamber inner cavity and the freezing chamber inner cavity are respectively provided with a group of magnetic field generating units.
3. The refrigerator according to claim 1, wherein each set of magnetic field generating units comprises four magnetic field generating coils and two parallel steel plates; each magnetic field generating coil comprises a column-type iron core and a coil wound on the iron core; two parallel steel plates are attached to the upper side, the lower side or the left side and the right side of the inner cavity of the refrigerator body, and four iron cores are respectively and vertically fixedly connected to four corners of the steel plates.
4. The refrigerator according to claim 3, wherein the outer surface of the steel plate is provided with a protective coating.
5. The refrigerator according to claim 1, wherein the pulsed magnetic field generating system further comprises a pulse power source, and the pulse power source is a variable frequency and variable voltage pulse power source.
6. The novel pulsed magnetic field assisted freezing and refreshing refrigerator as claimed in claim 1, wherein the magnetic field intensity of the pulsed magnetic field generated by each group of magnetic field generating units is 0-1000 GS.
7. The refrigerator as claimed in claim 1, wherein the frequency of the pulse magnetic field generated by each set of magnetic field generating units is in the range of 0-100 KHz.
8. The refrigerator according to claim 1, wherein the refrigerating system comprises a compressor, a dew removing pipe, a condenser, a dry filter, an electromagnetic valve, a refrigerating chamber capillary tube, a refrigerating chamber evaporator, a freezing chamber capillary tube, and a freezing chamber evaporator, which are connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907413.8A CN113758104A (en) | 2021-08-09 | 2021-08-09 | Novel pulse magnetic field assisted freezing fresh-keeping refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907413.8A CN113758104A (en) | 2021-08-09 | 2021-08-09 | Novel pulse magnetic field assisted freezing fresh-keeping refrigerator |
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| Publication Number | Publication Date |
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| CN113758104A true CN113758104A (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110907413.8A Pending CN113758104A (en) | 2021-08-09 | 2021-08-09 | Novel pulse magnetic field assisted freezing fresh-keeping refrigerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279134A (en) * | 2021-12-28 | 2022-04-05 | Tcl家用电器（合肥）有限公司 | Refrigeration equipment control method, refrigeration equipment and storage medium |
| CN114279140A (en) * | 2021-12-28 | 2022-04-05 | Tcl家用电器（合肥）有限公司 | Refrigeration equipment control method and device, refrigeration equipment and storage medium |
-
2021
- 2021-08-09 CN CN202110907413.8A patent/CN113758104A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279134A (en) * | 2021-12-28 | 2022-04-05 | Tcl家用电器（合肥）有限公司 | Refrigeration equipment control method, refrigeration equipment and storage medium |
| CN114279140A (en) * | 2021-12-28 | 2022-04-05 | Tcl家用电器（合肥）有限公司 | Refrigeration equipment control method and device, refrigeration equipment and storage medium |
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