CN109186124B - Magnetic refrigerator magnet assembly structure, magnetic refrigerator and control method of magnetic refrigerator - Google Patents
Magnetic refrigerator magnet assembly structure, magnetic refrigerator and control method of magnetic refrigerator Download PDFInfo
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- CN109186124B CN109186124B CN201811052097.5A CN201811052097A CN109186124B CN 109186124 B CN109186124 B CN 109186124B CN 201811052097 A CN201811052097 A CN 201811052097A CN 109186124 B CN109186124 B CN 109186124B
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- accumulation bed
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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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/002—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects
- F25B2321/0022—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a rotating or otherwise moving magnet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The invention provides a magnetic component structure of a magnetic refrigerator, the magnetic refrigerator and a control method thereof, wherein the magnetic component structure comprises a magnetic component and a cold accumulation bed component; the magnet assembly comprises an upper magnet and a lower magnet which are arranged in a split manner; the cold storage bed component is arranged between the upper magnet and the lower magnet; the magnet assembly structure of the magnetic refrigerator, the magnetic refrigerator and the control method thereof provided by the invention have no external structural parts, so that the internal space is fully utilized, the structure is more compact, the cost is reduced, the flow passage of a flow path is shortened, and the flow path structure is simplified; meanwhile, the fluid concentrated refrigeration and concentrated heat dissipation mode of the magnetic refrigerator can realize refrigeration and heat dissipation more efficiently, and the refrigeration or heating efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of magnetic refrigerators, and particularly relates to a magnetic component structure of a magnetic refrigerator, the magnetic refrigerator and a control method of the magnetic refrigerator.
Background
Along with the increasing attention of people on environmental problems, the traditional vapor compression refrigeration has environmental problems such as ozone layer damage, greenhouse effect and the like, so that a novel environment-friendly and energy-saving refrigeration technology is urgently needed; the magnetic refrigeration technology is a novel refrigeration technology based on the magnetocaloric effect, and the magnetocaloric effect refers to the physical phenomenon of heat release or heat absorption of a magnetocaloric material when a magnetic field is enhanced or weakened; when the magnetic field magnetizes the magnetocaloric material, the magnetocaloric material becomes hot; when the magnetic field is removed, the magnetocaloric material becomes cold; magnetic refrigeration is the phenomenon of utilizing the magnetocaloric effect to realize the purpose of refrigeration.
Magnetic refrigerators can be classified into stationary type, reciprocating type and rotary type according to the development of the magnetic refrigerator in a moving manner thereof; the rotary magnetic refrigerator has compact structure, high running frequency and good refrigerating effect, and is the object of important research.
As shown in fig. 1 and 2, the magnet assembly in the existing rotary magnetic refrigerator is integrated, and the cold accumulation bed is embedded in the magnet assembly, so that the existing rotary magnetic refrigerator has the defects of complex pipeline circulation and complicated structure, and also has the problem of insufficient heat exchange of cold and hot fluid; for example, chinese patent CN105849477a uses a cam-piston like mechanism to drive fluid, which has achieved the effect of simplifying the magnetic refrigeration system to some extent, but the flow path is relatively complex, and requires a bulky structural part to be disposed in the external space, and the flow path heat exchange is insufficient.
Based on the technical problems existing in the magnetic refrigerator, no relevant solution exists yet; there is therefore an urgent need to seek an effective solution to the above problems.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art, and provides a magnet assembly structure of a magnetic refrigerator, the magnetic refrigerator and a control method thereof, aiming at solving the problem that the existing magnetic refrigeration structure is complex.
The invention provides a magnet assembly structure of a magnetic refrigerator, which comprises a magnet assembly and a cold accumulation bed assembly; the magnet assembly comprises an upper magnet and a lower magnet; the upper magnet and the lower magnet are arranged in a split mode; the cold storage bed component is arranged between the upper magnet and the lower magnet.
Further, the magnet assembly includes a first magnet assembly and a second magnet assembly; the cold accumulation bed assembly comprises a first cold accumulation bed assembly and a second cold accumulation bed assembly; the first cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the first magnet assembly; the second cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the second magnet assembly; the first and second cold accumulation bed assemblies are communicated through a flow path to form a circulation loop.
Further, the cold accumulation bed assembly comprises a cold accumulation bed and a middle magnet; the cold storage bed is internally provided with a magnetic working medium and fluid.
Correspondingly, the invention also provides a magnetic refrigerator, which comprises a plurality of refrigerating units or heating units; the plurality of refrigeration units or the plurality of heating units respectively comprise a magnet assembly; the magnet assembly is the magnetic refrigerator magnet assembly described above.
Further, the refrigeration unit also comprises a heat exchanger; the heat exchanger comprises a cold end heat exchanger and a hot end heat exchanger; the cold accumulation bed assembly comprises a cold accumulation bed; the cold end heat exchanger and the hot end heat exchanger of the heat exchanger are respectively communicated with the cold accumulation bed.
Further, the magnet assembly includes a first magnet assembly and a second magnet assembly; the cold accumulation bed assembly comprises a first cold accumulation bed assembly and a second cold accumulation bed assembly; the first cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the first magnet assembly; the second cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the second magnet assembly; the first cold accumulation bed assembly and the second cold accumulation bed assembly are communicated through a flow path to form a circulation loop; the cold end heat exchanger is communicated with a cold accumulation bed of the first cold accumulation bed assembly through a flow path; the hot end heat exchanger is communicated with the cold accumulation bed of the second cold accumulation bed assembly through a flow path.
Further, the cold-end heat exchanger comprises a first cold-end heat exchanger and a second cold-end heat exchanger; the first cold end heat exchanger and the second cold end heat exchanger are respectively communicated with a cold accumulation bed of the first cold accumulation bed assembly through a flow path; and/or the hot side heat exchanger comprises a first hot side heat exchanger and a second hot side heat exchanger; the first hot end heat exchanger and the second hot end heat exchanger are respectively communicated with a cold accumulation bed of the second cold accumulation bed assembly through flow paths.
Further, the device also comprises a pump; a valve is arranged on a connecting flow path between the heat exchanger and the cold accumulation bed; the pump is respectively communicated with the cold end heat exchanger and the hot end heat exchanger.
Further, the air conditioner also comprises a fan; the fans are respectively arranged at the side edges of the cold end heat exchanger and the hot end heat exchanger.
Further, the device also comprises a rotating shaft; the upper magnet is fixedly arranged at the upper end of the rotating shaft through an upper magnet fixing plate; the lower magnet is fixedly arranged at the lower end of the rotating shaft through a lower magnet fixing plate.
Further, the device also comprises a rotating shaft and a driving device; the rotating shaft is in transmission connection with the driving device; the plurality of magnet assemblies are fixedly arranged on the rotating shaft through the magnet fixing plate and rotate along with the rotating shaft.
Correspondingly, the invention also provides a control method of the magnetic refrigerator, which comprises the magnetic refrigerator; the magnet assembly can perform rotary motion; when the magnet assembly passes through the cold storage bed assembly, the magnetic working medium in the cold storage bed of the cold storage bed assembly is magnetized, so that the temperature of the magnetic working medium in the cold storage bed is increased; when the magnet assembly leaves the cold accumulation bed assembly, the magnetic working medium in the cold accumulation bed of the cold accumulation bed assembly is demagnetized, so that the temperature of the magnetic working medium in the cold accumulation bed is lowered.
The magnet assembly structure of the magnetic refrigerator, the magnetic refrigerator and the control method thereof provided by the invention have no external structural parts, realize high compactness of the magnetic refrigerator, avoid the whole structure from being bulkier, make the internal space fully utilized, make the structure more compact, reduce the cost, shorten the flow passage of the flow path, simplify the flow path structure and solve the problem of complex flow path of the magnetic refrigerator; meanwhile, the fluid concentrated refrigeration and concentrated heat dissipation mode of the magnetic refrigerator can realize refrigeration and heat dissipation more efficiently, and the refrigeration or heating efficiency is improved.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a conventional magnet assembly;
FIG. 2 is an exploded view of a conventional magnet assembly;
FIG. 3 is a schematic view of a magnet assembly according to the present invention;
FIG. 4 is an exploded view of the magnet assembly of the present invention;
FIG. 5 is a schematic diagram of a refrigeration unit according to the present invention;
FIG. 6 is a schematic flow path diagram of a refrigeration unit according to the present invention;
FIG. 7 is a schematic diagram of the overall structure of a magnetic refrigerator according to the present invention.
In the figure: 1. an upper magnet; 2. a lower magnet; 3. a cold accumulation bed assembly; 31. a cold storage bed; 32. a middle magnet; 4. an upper magnet fixing plate; 5. a lower magnet fixing plate; 6. a rotating shaft; 7. a cold end heat exchanger; 71. a first cold-end heat exchanger; 72. a second cold-end heat exchanger; 8. a hot side heat exchanger; 81. a first hot side heat exchanger; 82. a second hot side heat exchanger; 9. a flow path; 10. a valve; 11 pumps; 12. a blower; 13. a magnet assembly; 100. a first refrigeration unit; 200. a first heating unit; 300. a second refrigeration unit; 400. and a second heating unit.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 3 to 4, the present invention provides a magnet assembly structure of a magnetic refrigerator, comprising a magnet assembly 13 and a cool storage bed assembly 3; the magnet assembly 13 includes an upper magnet 1 and a lower magnet 2, and the upper magnet 1 and the lower magnet 2 are separately provided; the cold storage bed assembly 3 is arranged between the upper magnet 1 and the lower magnet 2; specifically, the cold accumulation bed assembly 3 includes a cold accumulation bed 31 and a middle magnet 32; the cold storage bed 31 is internally provided with a magnetic working medium and fluid, wherein the magnetic working medium can be magnetized or demagnetized in the rotating process of the magnet assembly 13 so as to increase the temperature or decrease the temperature, thereby heating or cooling the fluid; the upper magnet 1 and the lower magnet 2 in this application scheme are independent parts respectively to with cold-storage bed subassembly 3 set up stationary between upper magnet 1 and lower magnet 2, like this when upper magnet and lower magnet do circular motion, and when rotatory to the cold-storage bed subassembly, upper magnet and lower magnet form the structural style who has integral magnet subassembly with well magnet, when again can make upper magnet and lower magnet not cut off its inner space, thereby make the cold-storage bed can directly carry out the flow path connection of ultrashort distance with opposite cold-storage bed, reach the effect of simplifying the flow path.
Preferably, in combination with the above, as shown in fig. 3 to 4, in the present embodiment, the magnet assembly 13 includes a first magnet assembly and a second magnet assembly; the cold accumulation bed assembly 3 comprises a first cold accumulation bed assembly and a second cold accumulation bed assembly; the first cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the first magnet assembly; the second cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the second magnet assembly; the first cold accumulation bed assembly and the second cold accumulation bed assembly are communicated through a flow path 9 to form a circulation loop, so that the replacement or transmission of refrigerating or heating fluid is realized.
Accordingly, in combination with the above-described aspects, as shown in fig. 3 to 7, the present invention further provides a magnetic refrigerator including a plurality of cooling or heating units; the refrigeration unit or the heating unit comprises a magnet assembly; the magnet assembly is the magnetic refrigerator magnet assembly described above.
Preferably, in combination with the above, as shown in fig. 3 to 7, in the present embodiment, the refrigeration unit includes a first refrigeration unit 100 and a second refrigeration unit 300; the heating unit includes a first heating unit 200 and a second heating unit 400; the refrigeration unit or the heating unit comprises a heat exchanger; the cold storage bed assembly 3 comprises a cold storage bed 31; the heat exchanger communicates with the cold accumulation bed 31 to effect replacement and transfer of fluid to effect cyclical heating or cooling.
Preferably, in combination with the above, as shown in fig. 3 to 7, in this embodiment, the heat exchanger includes a cold-end heat exchanger 7 and a hot-end heat exchanger 8; the magnet assembly 13 comprises a first magnet assembly and a second magnet assembly; the cold accumulation bed assembly 3 comprises a first cold accumulation bed assembly and a second cold accumulation bed assembly; the first cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the first magnet assembly; the second cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the second magnet assembly; the first cold accumulation bed assembly and the second cold accumulation bed assembly are communicated through a flow path 9 to form a circulation loop; the cold end heat exchanger 7 is communicated with a cold accumulation bed of the first cold accumulation bed assembly through a flow path; the hot end heat exchanger 8 is communicated with the cold accumulation bed of the second cold accumulation bed assembly through a flow path, so that the communication of the whole refrigerating or heating flow path is realized.
Preferably, in combination with the above, as shown in fig. 3 to 7, in the present embodiment, the cold-end heat exchanger 7 includes a first cold-end heat exchanger 71 and a second cold-end heat exchanger 72; the first cold-end heat exchanger 71 and the second cold-end heat exchanger 72 are respectively communicated with the cold accumulation bed of the first cold accumulation bed assembly through flow paths; and/or, the hot side heat exchanger 8 comprises a first hot side heat exchanger 81 and a second hot side heat exchanger 82; the first hot-end heat exchanger 81 and the second hot-end heat exchanger 82 are respectively communicated with the cold accumulation bed of the second cold accumulation bed assembly through flow paths, so that four independent heat exchanger units are realized, and the four independent heat exchanger units can be reasonably distributed according to actual refrigeration or heating conditions, thereby ensuring effective refrigeration or heating and timely radiating heat.
Preferably, in combination with the above, as shown in fig. 3 to 7, the present embodiment further includes a pump 11; a valve 10 is arranged on a connecting flow path of the heat exchanger and the cold accumulation bed 31; the pump 11 is respectively arranged at the side edges of the cold end heat exchanger 7 and the hot end heat exchanger 8, and is respectively communicated with the cold end heat exchanger 7 and the hot end heat exchanger 8 and is used for providing power for pumping fluid; the valve 10 mainly controls the flow direction of the entire fluid.
Preferably, in combination with the above solution, as shown in fig. 3 to 7, the present embodiment further includes a fan 12; the fans 12 are respectively arranged at the side edges of the cold-end heat exchanger 7 and the hot-end heat exchanger 8 and used for radiating heat for the cold-end heat exchanger 7 and the hot-end heat exchanger 8; when the heated or cooled fluid is pumped to the cold end heat exchanger 7 or the hot end heat exchanger 8, the cold end heat exchanger 7 and the hot end heat exchanger 8 can be directly radiated by the fan 12, so that heat exchange with air is performed.
Preferably, in combination with the above solution, as shown in fig. 3 to 7, the present embodiment further includes a rotating shaft 6; the upper magnet 1 is fixedly arranged at the upper end of the rotating shaft 6 through an upper magnet fixing plate 4; the lower magnet 2 is fixedly arranged at the lower end of the rotating shaft 6 through a lower magnet fixing plate 5, and the cold accumulation bed assembly 3 is clamped between the upper magnet 1 and the lower magnet 2 to form a whole magnet assembly; further, the device also comprises a driving device; the rotating shaft 6 is in transmission connection with a driving device (not shown); the rotating shaft 6 is driven by a driving device so as to realize circular motion; specifically, the plurality of magnet assemblies are fixedly arranged on the rotating shaft through the magnet fixing plate and rotate along with the rotating shaft, so that refrigeration or heating is realized.
By adopting the scheme, the whole magnetic refrigerator can be subjected to refrigeration and heat dissipation, all parts can be arranged in the internal space of the magnetic refrigerator, and the connected pipe flow path is very short; on one hand, unnecessary pressure loss and heat loss can be avoided, on the other hand, the whole structure is very compact, and parts are not required to be arranged on the external space of the magnetic refrigerator, so that the whole structure which is not bulky is avoided; meanwhile, the flow path fluid forms a refrigerating and radiating unit, and a magnetic refrigerator structure with large refrigerating capacity can be formed by circumferentially arranging two or more refrigerating or heating units.
Correspondingly, in combination with the scheme, as shown in fig. 3 to 7, the invention also provides a magnetic refrigerator control method, which comprises the magnetic refrigerator; the magnet assembly can perform rotary motion; when the magnet assembly passes through the cold storage bed assembly, the magnetic working medium in the cold storage bed of the cold storage bed assembly is magnetized, so that the temperature of the magnetic working medium in the cold storage bed is increased, and the fluid in the cold storage bed is heated; when the magnet assembly leaves the cold accumulation bed assembly, the magnetic working medium in the cold accumulation bed of the cold accumulation bed assembly is demagnetized, so that the temperature of the magnetic working medium in the cold accumulation bed is lowered, and the temperature of fluid in the cold accumulation bed is lowered.
Preferably, in combination with the above solution, as shown in fig. 3 to 7, the present embodiment further includes a heat exchanger and a pump; a valve is arranged on a connecting flow path between the heat exchanger and the cold accumulation bed; the heat exchanger comprises a cold end heat exchanger and a hot end heat exchanger; the pump is communicated with the cold end heat exchanger and the hot end heat exchanger; the cold end heat exchanger comprises a first cold end heat exchanger and a second cold end heat exchanger; the hot-end heat exchanger comprises a first hot-end heat exchanger and a second hot-end heat exchanger; the magnet assembly comprises a first magnet assembly and a second magnet assembly; the cold accumulation bed assembly comprises a first cold accumulation bed assembly and a second cold accumulation bed assembly; the first cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the first magnet assembly; the second cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the second magnet assembly; the first cold accumulation bed assembly and the second cold accumulation bed assembly are communicated through a flow path to form a circulation loop; the first cold end heat exchanger and the second cold end heat exchanger are respectively communicated with a cold accumulation bed of the first cold accumulation bed assembly through a flow path; the first hot end heat exchanger and the second hot end heat exchanger are respectively communicated with a cold accumulation bed of the second cold accumulation bed assembly through a flow path;
in the initial stage, the first cold-end heat exchanger 71 and the first hot-end heat exchanger 81 are in a vacant state; the second cold-end heat exchanger 72, the second hot-end heat exchanger 82 and the cold-storage bed 31 are filled with magnetic working media, at the moment, the magnetic working media in the cold-storage bed 31 are in a state to be magnetized, when the magnet assembly passes through the cold-storage bed 31 assembly, the temperature of the magnetic working media in the cold-storage bed 31 is increased, fluid in the cold-storage bed 31 is heated, and the hot fluid in the cold-storage bed 31 is pumped into the first hot-end heat exchanger 81 through the control of the valve 10 and the pump 11; at this time, the first hot side heat exchanger 81 is filled with hot fluid, and then, in the next interval, heat dissipation is performed;
when all the fluid in the cold-storage bed 31 is pumped into the first hot-end heat exchanger 81, immediately pumping the fluid in the second hot-end heat exchanger 82 into the cold-storage bed 31, and at the moment, the second hot-end heat exchanger 82 is in a vacant state; when the magnet assembly leaves the cold accumulation bed assembly, the fluid in the cold accumulation bed 31 is in a state to be demagnetized, after demagnetization is finished, the temperature of the magnetic working medium in the cold accumulation bed 31 is reduced, the fluid in the cold accumulation bed 31 becomes cold, and cold fluid in the cold accumulation bed 31 is pumped into the first cold end heat exchanger 71 through the control of the valve 10 and the pump 11; in the process of demagnetizing the cold-storage bed, under the condition that the hot fluid in the first hot-end heat exchanger 81 radiates heat forcedly through the fan 12, the heat is radiated to the environment, and finally the hot fluid becomes fluid with the temperature similar to the ring temperature; the cold fluid in the first cold side heat exchanger 71 will absorb ambient temperature in the next batch, forming refrigeration;
when all the cold fluid in the cold storage bed 31 is pumped into the first cold end heat exchanger 71, immediately pumping the fluid in the second cold end heat exchanger 72 into the cold storage bed 31; when the magnet assembly passes through the cold-storage bed assembly, the temperature of the magnetic working medium in the cold-storage bed 31 is increased, the fluid in the cold-storage bed is heated, and the hot fluid in the cold-storage bed is pumped into the second hot-end heat exchanger 82 through the control of the valve 10 and the pump 11; during this magnetizing process, the cold fluid in the first cold-end heat exchanger 71 absorbs ambient heat and becomes fluid similar to normal temperature;
when the hot fluid in the cold accumulation bed 31 is completely pumped into the second hot end heat exchanger 82, the fluid in the first hot end heat exchanger 81 is immediately pumped into the cold accumulation bed 31; when the magnet assembly leaves the cold accumulation bed 31 assembly, the temperature of the magnetic working medium in the cold accumulation bed 31 is reduced, the fluid in the cold accumulation bed 31 becomes cold, and the cold fluid in the cold accumulation bed 31 is pumped into the second cold end heat exchanger 72 through the control of the valve 10 and the pump 11 to be refrigerated by the environment heat to be absorbed; in the process of demagnetization, the fluid in the second hot-end heat exchanger 82 is forced to flow by a fan, so that heat is dissipated to the environment and becomes normal-temperature fluid;
when the second cold-end heat exchanger 72 is filled with cold fluid, immediately pumping the fluid in the first cold-end heat exchanger 71 into the cold-storage bed 31, at this time, the first cold-end heat exchanger 71 becomes an empty state, the first hot-end heat exchanger 81 also becomes an empty state, and the magnetic working medium in the cold-storage bed 31 is in a state to be magnetized, i.e. returns to the original working state, thereby forming a circulation process of continuously refrigerating and radiating;
by adopting the scheme, the first cold-end heat exchanger 71 and the second cold-end heat exchanger 72 work in turn, the first hot-end heat exchanger 81 and the second hot-end heat exchanger 82 work in turn, and when each heat exchanger works, all the fluid in the cavity of the heat exchanger is refrigerated or radiated, and enough time is provided for refrigeration or radiation, so that the radiation or refrigeration is quite sufficient, and the heat exchange efficiency is improved.
Preferably, in combination with the above solution, in this embodiment, when all the cold fluid in the cold storage bed is pumped into the first cold-end heat exchanger or the second cold-end heat exchanger, the method further includes starting a fan to dissipate heat of the first cold-end heat exchanger or the second cold-end heat exchanger; and/or when the hot fluid in the cold storage bed is pumped into the first hot-end heat exchanger or the second hot-end heat exchanger, the cold storage bed further comprises a fan for starting to radiate the first hot-end heat exchanger or the second hot-end heat exchanger.
The magnet assembly structure of the magnetic refrigerator, the magnetic refrigerator and the control method thereof provided by the invention have no external structural parts, realize high compactness of the magnetic refrigerator, avoid the whole structure from being bloated, make the internal space fully utilized, make the structure more compact, reduce the cost, shorten the flow passage of the flow path, simplify the flow path structure and solve the problem of complex flow path of the magnetic refrigerator; meanwhile, the fluid concentrated refrigeration and concentrated heat dissipation mode of the magnetic refrigerator can realize refrigeration and heat dissipation more efficiently, and the refrigeration or heating efficiency is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the disclosed technology. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technology of the present invention fall within the protection scope of the present invention.
Claims (13)
1. The magnetic component structure of the magnetic refrigerator is characterized by comprising a magnetic component and a cold accumulation bed component; the magnet assembly includes an upper magnet and a lower magnet; the upper magnet and the lower magnet are arranged in a split mode; the cold accumulation bed assembly is arranged between the upper magnet and the lower magnet; the cold accumulation bed assembly comprises a cold accumulation bed and a middle magnet; the cold storage bed is internally provided with a magnetic working medium and fluid.
2. The magnetic refrigerator magnet assembly structure of claim 1, wherein the magnet assembly comprises a first magnet assembly and a second magnet assembly; the cold accumulation bed assembly comprises a first cold accumulation bed assembly and a second cold accumulation bed assembly; the first cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the first magnet assembly; the second cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the second magnet assembly; the first and second cold accumulation bed assemblies are communicated through a flow path to form a circulation loop.
3. A magnetic refrigerator comprising a plurality of refrigeration units or heating units; a plurality of the refrigerating units or the heating units respectively comprise a magnet assembly; the magnet assembly is a magnetic refrigerator magnet assembly as claimed in claim 1.
4. A magnetic refrigerator according to claim 3, wherein the refrigeration unit further comprises a heat exchanger; the heat exchanger comprises a cold end heat exchanger and a hot end heat exchanger; the cold accumulation bed assembly comprises a cold accumulation bed; and the cold end heat exchanger and the hot end heat exchanger of the heat exchanger are respectively communicated with the cold accumulation bed.
5. The magnetic refrigerator of claim 4, wherein the magnet assembly includes a first magnet assembly and a second magnet assembly; the cold accumulation bed assembly comprises a first cold accumulation bed assembly and a second cold accumulation bed assembly; the first cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the first magnet assembly; the second cold accumulation bed assembly is arranged between an upper magnet and a lower magnet of the second magnet assembly; the first cold accumulation bed assembly and the second cold accumulation bed assembly are communicated through a flow path to form a circulation loop; the cold end heat exchanger is communicated with the cold accumulation bed of the first cold accumulation bed assembly through a flow path; the hot end heat exchanger is communicated with the cold accumulation bed of the second cold accumulation bed assembly through a flow path.
6. The magnetic refrigerator of claim 5, wherein the cold-side heat exchanger comprises a first cold-side heat exchanger and a second cold-side heat exchanger; the first cold-end heat exchanger and the second cold-end heat exchanger are respectively communicated with a cold accumulation bed of the first cold accumulation bed assembly through a flow path; and/or the hot side heat exchanger comprises a first hot side heat exchanger and a second hot side heat exchanger; the first hot end heat exchanger and the second hot end heat exchanger are respectively communicated with the cold accumulation bed of the second cold accumulation bed assembly through flow paths.
7. The magnetic refrigerator of claim 4, further comprising a pump; a valve is arranged on a connecting flow path between the heat exchanger and the cold accumulation bed; the pump is respectively communicated with the cold end heat exchanger and the hot end heat exchanger.
8. The magnetic refrigerator of claim 4, further comprising a fan; the fans are respectively arranged at the side edges of the cold end heat exchanger and the hot end heat exchanger.
9. The magnetic refrigerator of claim 3, further comprising a rotating shaft; the upper magnet is fixedly arranged at the upper end of the rotating shaft through an upper magnet fixing plate; the lower magnet is fixedly arranged at the lower end of the rotating shaft through a lower magnet fixing plate.
10. A magnetic refrigerator according to claim 3, further comprising a spindle and a drive; the rotating shaft is in transmission connection with the driving device; the magnet assemblies are fixedly arranged on the rotating shaft through the magnet fixing plates and rotate along with the rotating shaft.
11. A method of controlling a magnetic refrigerator, comprising the magnetic refrigerator of claim 3; the magnet assembly can perform rotary motion; when the magnet assembly passes through the cold accumulation bed assembly, magnetizing is carried out on a magnetic working medium in a cold accumulation bed of the cold accumulation bed assembly, so that the temperature of the magnetic working medium in the cold accumulation bed is increased; when the magnet assembly leaves the cold accumulation bed assembly, demagnetizing the magnetic working medium in the cold accumulation bed of the cold accumulation bed assembly, so that the temperature of the magnetic working medium in the cold accumulation bed is lowered.
12. The method of controlling a magnetic refrigerator according to claim 11, further comprising a heat exchanger; the heat exchanger comprises a cold end heat exchanger and a hot end heat exchanger; the cold end heat exchanger comprises a first cold end heat exchanger and a second cold end heat exchanger; the hot-end heat exchanger comprises a first hot-end heat exchanger and a second hot-end heat exchanger; the first cold-end heat exchanger and the second cold-end heat exchanger are respectively communicated with the cold accumulation bed through a flow path; the first hot end heat exchanger and the second hot end heat exchanger are respectively communicated with the cold accumulation bed through a flow path;
in the initial stage, the first cold-end heat exchanger and the first hot-end heat exchanger are empty; the second cold end heat exchanger, the second hot end heat exchanger and the cold accumulation bed are filled with magnetic working media; when the magnet assembly passes through the cold accumulation bed assembly, the temperature of the magnetic working medium in the cold accumulation bed is increased, the fluid in the cold accumulation bed is heated, and the hot fluid in the cold accumulation bed is pumped into the first hot end heat exchanger;
when all the fluid in the cold accumulation bed is pumped into the first hot end heat exchanger, immediately pumping the fluid in the second hot end heat exchanger into the cold accumulation bed; when the magnet assembly leaves the cold accumulation bed assembly, the temperature of the magnetic working medium in the cold accumulation bed is reduced, fluid in the cold accumulation bed is cooled, and cold fluid in the cold accumulation bed is pumped into the first cold end heat exchanger;
when all the cold fluid in the cold accumulation bed is pumped into the first cold-end heat exchanger, immediately pumping the fluid in the second cold-end heat exchanger into the cold accumulation bed; when the magnet assembly passes through the cold accumulation bed assembly, the temperature of the magnetic working medium in the cold accumulation bed is increased, the fluid in the cold accumulation bed is heated, and the hot fluid in the cold accumulation bed is pumped into the second hot end heat exchanger;
when all the hot fluid in the cold accumulation bed is pumped into the second hot end heat exchanger, immediately pumping the fluid in the first hot end heat exchanger into the cold accumulation bed; when the magnet assembly leaves the cold accumulation bed assembly, the temperature of the magnetic working medium in the cold accumulation bed is reduced, the fluid in the cold accumulation bed is cooled, and cold fluid in the cold accumulation bed is pumped into the second cold end heat exchanger;
when all the cold fluid in the cold accumulation bed is pumped into the second cold-end heat exchanger, pumping the fluid of the first cold-end heat exchanger into the cold accumulation bed; at the moment, the first cold-end heat exchanger is changed into an empty state, the first hot-end heat exchanger is also changed into an empty state, the magnetic working medium in the cold storage bed is in a state to be magnetized, and the magnetic refrigerator returns to the original working state, so that a refrigerating and radiating circulation process is formed.
13. The method of claim 12, further comprising activating a fan to dissipate heat from the first or second cold-end heat exchanger when all of the cold fluid in the cold-storage bed is pumped into the first or second cold-end heat exchanger; and/or when the hot fluid in the cold accumulation bed is pumped into the first hot end heat exchanger or the second hot end heat exchanger, the cold accumulation bed further comprises a starting fan for radiating the first hot end heat exchanger or the second hot end heat exchanger.
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| CN110631287A (en) * | 2019-09-09 | 2019-12-31 | 包头稀土研究院 | double-C-shaped magnetic field for rotary room-temperature magnetic refrigerator |
| CN110779235B (en) * | 2019-11-06 | 2021-12-03 | 珠海格力智能装备有限公司 | Method and device for controlling magnetic refrigerator |
| CN114017946B (en) * | 2021-10-22 | 2022-09-02 | 武汉理工大学 | All-solid-state energy conversion refrigerating device based on thermoelectric magnetic coupling |
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