CN112629057B - Single-row multistage serial double-magnetic-field magnetic refrigerator and heat exchange method thereof - Google Patents
Single-row multistage serial double-magnetic-field magnetic refrigerator and heat exchange method thereof Download PDFInfo
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- CN112629057B CN112629057B CN202011633003.0A CN202011633003A CN112629057B CN 112629057 B CN112629057 B CN 112629057B CN 202011633003 A CN202011633003 A CN 202011633003A CN 112629057 B CN112629057 B CN 112629057B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 238000005057 refrigeration Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000178 monomer Substances 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 30
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 150000002910 rare earth metals Chemical group 0.000 claims description 5
- 239000010409 thin film Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 7
- 239000003507 refrigerant Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 229910052688 Gadolinium Inorganic materials 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001371 Er alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- RTXFQUKNVGWGFF-UHFFFAOYSA-N [Er].[Gd] Chemical compound [Er].[Gd] RTXFQUKNVGWGFF-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- HQWUQSSKOBTIHZ-UHFFFAOYSA-N gadolinium terbium Chemical compound [Gd][Tb] HQWUQSSKOBTIHZ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
-
- 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
-
- 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]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a single-row multistage serial double-magnetic-field magnetic refrigerator, which comprises: the refrigerating bin, the circulating system and the heat exchange system; the refrigeration bin includes: a magnetic field system and a working medium bed; the magnetic field system comprises: at least one pair of double-magnetic-field monomers and a magnetic working medium, wherein the double-magnetic-field monomers are arranged in the refrigerating bin, the double-magnetic-field monomers are sleeved outside the working medium bed, and the magnetic working medium is fixed inside the working medium bed; the double magnetic field monomer is a secondary magnetic field, comprising: an outer yoke steel cylinder, an outer magnet, an inner yoke steel cylinder and an inner magnet; the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder is connected with a motor and a speed reducer; the heat exchange system includes: heat exchanger, regenerator, circulation system includes: the device comprises a diaphragm water pump, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve. The invention also discloses a heat exchange method of the single-row multistage serial double-magnetic-field magnetic refrigerator. The invention realizes the maximization of the magnetocaloric effect and greatly improves the magnetic refrigeration working efficiency.
Description
Technical Field
The invention relates to the field of room temperature magnetic refrigeration, in particular to a single-row multistage serial double-magnetic-field magnetic refrigerator and a heat exchange method thereof.
Background
At present, the conventional compression refrigeration can cause harm to the ozone layer, which can indirectly lead to the change of the human living environment. According to the montreal protocol and the kyoto protocol, gas compression refrigeration uses a fluorine-free refrigerant, such as R410. Although the new refrigerating medium does not have adverse effect on ozone, the new refrigerating medium can cause greenhouse effect and still destroy natural environment.
Because in the traditional compressed gas refrigeration, the refrigerant is isentropically compressed by a compressor, then enters a condenser for cooling, enters a throttle valve, finally exits the throttle valve and enters an evaporator, and the refrigerant circularly works according to the cycle, and four parts of the whole thermodynamic cycle are completed when the refrigerant passes through different mechanical parts. The thermodynamic cycle of room temperature magnetic field refrigeration is completed in the heat accumulator, the refrigerant, namely the magnetic working medium, is not moved, and the thermodynamic cycle can be completed only by changing the magnetic field intensity, so that the refrigeration working efficiency of the magnetic field refrigeration hot fluid circulation system is greatly improved.
However, the traditional magnetic refrigeration mode has a complex mechanical structure, the demagnetization of the magnetic working medium in the room-temperature magnetic field refrigeration is incomplete, and the magnetocaloric effect is incomplete.
Disclosure of Invention
The invention aims to provide a single-row multistage serial double-magnetic-field magnetic refrigerator and a heat exchange method thereof, so that the maximization of a magnetocaloric effect is realized, and the magnetic refrigeration working efficiency is greatly improved.
In order to achieve the above purpose, the technical solution adopted by the invention is as follows:
a single-column multistage tandem dual-field magnetic refrigerator comprising: the refrigerating bin, the circulating system and the heat exchange system; the refrigeration bin includes: a magnetic field system and a working medium bed; the magnetic field system comprises: at least one pair of double-magnetic-field monomers and a magnetic working medium, wherein the double-magnetic-field monomers are arranged in the refrigerating bin, and the double-magnetic-field monomers are sleeved on the outer side of the working medium bed; the working medium bed is of a closed structure, and the magnetic working medium is fixed in the working medium bed; the double magnetic field monomer is a secondary magnetic field, comprising: an outer yoke steel cylinder, an outer magnet, an inner yoke steel cylinder and an inner magnet; the outer magnet is fixed on the inner wall of the outer magnetic yoke steel cylinder, and the inner magnet is fixed on the inner wall of the inner magnetic yoke steel cylinder; the inner magnetic yoke steel cylinder is sleeved inside the outer magnetic yoke steel cylinder; the inner magnetic yoke steel cylinder is arranged on the first supporting seat, the outer magnetic yoke steel cylinder is arranged on the second supporting seat, the first supporting seat and the second supporting seat are fixed in the refrigerating bin, and the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder is connected with a motor and a speed reducer; the heat exchange system includes: heat exchanger, regenerator, circulation system includes: the diaphragm water pump, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve; the first electromagnetic valve, the second electromagnetic valve and the diaphragm water pump are connected in series on the pipeline, and the third electromagnetic valve, the fourth electromagnetic valve and the diaphragm water pump are connected in series on the pipeline and are respectively connected between the heat exchanger and the cold accumulator in parallel; one end of the working medium bed is connected between the first electromagnetic valve and the third electromagnetic valve through pipelines, and the other end of the working medium bed is connected between the second electromagnetic valve and the fourth electromagnetic valve through pipelines.
Further, flanges are welded at two ends of the working medium bed, a filter screen is mounted on the flanges, a supporting plate is connected to the outer side of each flange, and the bottom of each supporting plate is fixed to the refrigerating bin.
Further, the magnetic working medium is rare earth metal wires or rare earth metal alloy wires, and the diameter is 0.1mm-1mm; the refrigerating bin is internally provided with a diode refrigerating sheet.
Further, a diode refrigerating sheet for controlling the initial temperature of the refrigerating bin is arranged in the refrigerating bin, and the diode refrigerating sheet is provided with a temperature sensor; the heat exchanger and the cold accumulator are provided with a thin film platinum resistor which is used for recording temperature change.
Further, a vacuum pressure gauge is arranged on the pipeline, and the circulating system further comprises a programmable controller, a motor, the vacuum pressure gauge, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a fourth electromagnetic valve which are powered by an external power supply; the programmable controller is connected with the motor, the vacuum pressure gauge, the diaphragm water pump, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve through signal wires respectively; the working medium bed, the pipeline, the heat exchanger and the cold accumulator are filled with heat exchange fluid, and a refrigeration box body is arranged outside the cold accumulator.
A heat exchange method of a single-column multistage serial double-magnetic field magnetic refrigerator comprises the following steps:
the programmable controller starts a diaphragm water pump at one side of the cold accumulator, opens the first electromagnetic valve and the second electromagnetic valve, and closes the third electromagnetic valve and the fourth electromagnetic valve;
the programmable controller starts the motor to rotate, the motor and the speed reducer drive the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder to rotate, the magnetic working medium is demagnetized, and the magnetic working medium is cooled;
the magnetic working medium absorbs heat of heat exchange fluid in the working medium bed, the cooled heat exchange fluid enters the regenerator, the temperature of the regenerator is reduced, and refrigeration is realized;
the programmable controller starts a diaphragm water pump at one side of the heat exchanger, opens a third electromagnetic valve and a fourth electromagnetic valve, and closes the first electromagnetic valve and the second electromagnetic valve;
the programmable controller starts the motor to rotate, the motor and the speed reducer drive the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder to rotate, the magnetic working medium is magnetized, and the temperature of the magnetic working medium is raised;
the magnetic working medium heats the heat exchange fluid in the working medium bed, the heated heat exchange fluid enters the heat exchanger 31, and the temperature of the cold accumulator is raised to realize heating.
Preferably, the programmable controller controls the working medium bed to be repeatedly magnetized and demagnetized by controlling the relative position of the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder, and the magnetic working medium changes the temperature of the heat exchange fluid, so that continuous refrigeration and heating are realized.
Preferably, the programmable controller controls the relative position of the inner yoke steel cylinder or the outer yoke steel cylinder by controlling the motor to continuously rotate or controlling the motor to rotate in the forward direction and the reverse direction.
The technical effects of the invention include:
1. the single-row multistage serial double-magnetic-field magnetic refrigerator provided by the invention can completely magnetize and demagnetize the magnetic working medium, improves the utilization rate of the magnetic heating effect of the magnetic working medium, realizes the maximization of the magnetic heating effect, and greatly improves the magnetic refrigeration working efficiency.
2. In conventional compressor refrigeration, the refrigerant is isentropically compressed by the compressor, then enters the condenser for cooling, enters the throttle valve, finally exits the throttle valve, enters the evaporator, and operates according to the cycle in which four parts of the entire thermodynamic cycle are completed with the refrigerant passing through different mechanical parts. According to the invention, the thermodynamic cycle of the magnetic refrigerator is completed in the refrigeration bin and the heat exchange system, and the thermodynamic cycle can be completed through the change of the magnetic field intensity, so that the refrigeration working efficiency is greatly improved.
Drawings
FIG. 1 is a schematic diagram of a single-column multistage tandem dual-field magnetic refrigerator according to the present invention;
FIG. 2 is a schematic diagram of a dual magnetic field unit structure in accordance with the present invention;
FIG. 3 is a diagram of a circulation system of a single-row multistage tandem dual-field magnetic refrigerator according to the present invention;
FIG. 4 is a schematic diagram of the present invention in which three magnetic field monomers are disposed outside the magnetic field system.
Detailed Description
The following description fully illustrates the specific embodiments of the invention to enable those skilled in the art to practice and reproduce it.
As shown in FIG. 1, the structure of the single-column multistage serial double-field magnetic refrigerator is shown in the schematic diagram. FIG. 2 is a schematic diagram of the structure of the dual magnetic field monomer in the present invention.
A single-column multistage tandem dual-field magnetic refrigerator comprising: the refrigerating bin 1, the circulating system 2 and the heat exchange system; the refrigeration bin 1 changes the temperature of the magnetic working medium by utilizing the magneto-thermal effect and transfers the cold or heat generated by the magnetic working medium to the heat exchange fluid; the circulation system 2 is connected with the heat exchange system through a pipeline and is used for conveying heat exchange fluid to the heat exchange system; the heat exchange system is used for exchanging cold or heat carried by the heat exchange fluid.
(1) The refrigeration compartment 1 includes: a magnetic field system 11, a working medium bed 12 and a diode refrigerating sheet 17.
The magnetic field system 11 comprises: a plurality of pairs of double magnetic field monomers and a magnetic working medium 16, wherein the plurality of double magnetic field monomers are sleeved outside the same working medium bed 12. The double magnetic field monomer is arranged in the refrigerating bin 1.
The double magnetic field monomer is a secondary magnetic field, comprising: an outer yoke steel cylinder 111, an outer magnet 112, an inner yoke steel cylinder 113, and an inner magnet 114; the outer magnet 112 is fixed on the inner wall of the outer yoke steel cylinder 111, and the inner magnet 114 is fixed on the inner wall of the inner yoke steel cylinder 113; the inner yoke steel cylinder 113 is sleeved inside the outer yoke steel cylinder 111. The inner yoke steel cylinder 113 is installed on the first supporting seat, the outer yoke steel cylinder 111 is installed on the second supporting seat, the first supporting seat and the second supporting seat are fixed in the refrigerating bin 1, and the inner yoke steel cylinder 113 or the outer yoke steel cylinder 111 is connected with a motor and a speed reducer. The motor is powered by an external power source.
The working medium bed 12 is of a closed structure, is connected with the circulating system 2 through a pipeline, two ends of the working medium bed are welded with flanges 14, and the flanges 14 are provided with filter screens; the outside of flange 14 is connected with backup pad 15, and the bottom of backup pad 15 is fixed on refrigeration storehouse 1. The magnetic working substance 16 is fixed inside the working substance bed 12.
The motor drives the speed reducer to rotate, the speed reducer drives the inner magnetic yoke steel cylinder 113 to rotate, magnetic fluxes of the outer magnet 112 and the inner magnet 114 are overlapped, magnetic fluxes of the double-magnetic-field single body are changed, and the magnetic fluxes are changed from the lowest magnetic field to the highest magnetic field.
The magnetic working medium 16 is in the lowest magnetic field, the magnetic working medium (magnetic material) 16 is demagnetized, and the magnetic working medium 16 is cooled; when the magnetic working medium 16 is in the highest magnetic field, the magnetic working medium 16 is magnetized, the magnetic entropy is reduced, the lattice entropy is increased, the atomic activity is aggravated, and the temperature of the magnetic material is raised. The magnetic working medium 16 is made of rare earth metal gadolinium wires with the diameter of 0.1mm-1mm, the gadolinium component accounts for more than 99 percent, and gadolinium terbium and gadolinium erbium alloy wires can be assembled in sections with the diameter of 0.1mm-1mm.
The diode refrigerating sheet 17 is used for controlling the initial temperature of the refrigerating bin 1, is provided with a temperature sensor, and the internal temperature of the refrigerating bin 1 reaches 20 ℃ to start refrigerating, so that the magnetocaloric effect of the magnetic working medium 16 is protected.
As shown in FIG. 3, a circulation system diagram of a single-column multistage serial double-field magnetic refrigerator in the present invention is shown.
(2) The circulation system 2 includes: a programmable controller, a vacuum pressure gauge 21, a diaphragm water pump 22-1, a diaphragm water pump 22-2, a first electromagnetic valve 23, a second electromagnetic valve 24, a third electromagnetic valve 25 and a fourth electromagnetic valve 26; the vacuum pressure gauge 21, the diaphragm water pump 22-1, the diaphragm water pump 22-2, the first electromagnetic valve 23, the second electromagnetic valve 24, the third electromagnetic valve 25 and the fourth electromagnetic valve 26 are sequentially arranged on the pipeline and are powered by an external power supply.
The first electromagnetic valve 23, the second electromagnetic valve 24 and the diaphragm water pump 22-1 are connected in series on a pipeline, the third electromagnetic valve 25, the fourth electromagnetic valve 26 and the diaphragm water pump 22-2 are connected in series on the pipeline, and are respectively connected between the heat exchanger 31 and the cold accumulator 32 in parallel; one end of the working medium bed 12 is connected between the first electromagnetic valve 23 and the third electromagnetic valve 25 through a pipeline, and the other end is connected between the second electromagnetic valve 24 and the fourth electromagnetic valve 26 through a pipeline.
The programmable controller is respectively connected with the motor, the vacuum pressure gauge 21, the diaphragm water pump 22-1, the diaphragm water pump 22-2, the first electromagnetic valve 23, the second electromagnetic valve 24, the third electromagnetic valve 25 and the fourth electromagnetic valve 26 through signal wires and is used for controlling the start and stop of the structure. The programmable controller simultaneously controls the rotational direction and the frequency of motion of the motor to control the timing of the entry or exit of the magnetic working medium 16 into the magnetic field.
The working medium bed 12, the pipeline, the heat exchanger 31 and the cold accumulator 32 are filled with heat exchange fluid, and the main component of the heat exchange fluid is H 2 O, a small amount of alcohol may be added. The first electromagnetic valve 23, the second electromagnetic valve 24, the third electromagnetic valve 25 and the fourth electromagnetic valve 26 are direct-conduction electromagnetic valves, and the circulation of heat exchange fluid is controlled by four direct-conduction electromagnetic valves. When the magnetic working medium 16 heats, the third electromagnetic valve 25 and the fourth electromagnetic valve 26 are opened, and the first electromagnetic valve 23 and the second electromagnetic valve 24 are closed; when the magnetic working medium 16 refrigerates, the first electromagnetic valve 23 and the second electromagnetic valve 24 are opened, and the third electromagnetic valve 25 and the fourth electromagnetic valve 26 are closed.
The vacuum pressure gauge 21 is used to measure the pressure of the heat exchange circulation system 2.
The diaphragm water pump 22-1 and the diaphragm water pump 22-2 are used as power sources of heat exchange fluid to provide power for cold and hot circulation.
(3) The heat exchange system 3 includes: the heat exchanger 31 and the regenerator 32, the heat exchanger 31 is connected to the pipeline between the third electromagnetic valve 25 and the fourth electromagnetic valve 26, and the regenerator 32 is connected to the pipeline between the first electromagnetic valve 23 and the second electromagnetic valve 24.
The heat exchanger 31 and the regenerator 32 are provided with a thin film platinum resistor for recording a temperature change. The regenerator 32 is provided with a cooling tank 33 outside.
As shown in fig. 4, three dual magnetic field monomers are disposed outside the working fluid bed 12 in the present invention.
At least one double magnetic field monomer is arranged outside the working fluid bed 12, and in the preferred embodiment, three double magnetic field monomers are arranged outside the working fluid bed 12.
The heat exchange method of the single-row multistage serial double-magnetic field magnetic refrigerator comprises the following steps:
step 1: the programmable controller starts the diaphragm water pump 22-1 at one side of the cold accumulator 32, opens the first electromagnetic valve 23 and the second electromagnetic valve 24, and closes the third electromagnetic valve 25 and the fourth electromagnetic valve 26;
step 2: the programmable controller starts the motor to rotate forward, the motor and the speed reducer drive the inner magnetic yoke steel cylinder 113 or the outer magnetic yoke steel cylinder 111 to rotate forward, the magnetic working medium 16 is demagnetized, and the magnetic working medium 16 is cooled;
magnetizing or demagnetizing is achieved by superposition of the magnetic fields of the outer magnet 112, the inner magnet 114 or by changing the magnetic field position where the magnetic working medium 16 is located.
Step 3: the magnetic working medium 16 absorbs heat of the heat exchange fluid in the working medium bed 12, the cooled heat exchange fluid enters the regenerator 32, the temperature of the regenerator 32 is reduced, and refrigeration is realized;
step 4: the programmable controller starts the diaphragm water pump 22-2 at one side of the heat exchanger 31, opens the third electromagnetic valve 25 and the fourth electromagnetic valve 26, and closes the first electromagnetic valve 23 and the second electromagnetic valve 24;
step 5: the programmable controller starts the motor to reversely rotate, the motor and the speed reducer drive the inner magnetic yoke steel cylinder 113 or the outer magnetic yoke steel cylinder 111 to reversely rotate, the magnetic working medium 16 is magnetized, and the temperature of the magnetic working medium 16 is raised;
step 6: the magnetic working medium 16 heats the heat exchange fluid in the working medium bed 12, the heated heat exchange fluid enters the heat exchanger 31, and the temperature of the cold accumulator 32 is raised to realize heating;
step 7: the programmable controller controls the working medium bed 12 to be repeatedly magnetized and demagnetized by controlling the relative position of the inner magnetic yoke steel cylinder 113 or the outer magnetic yoke steel cylinder 111, and the magnetic working medium 16 changes the temperature of the heat exchange fluid, so that continuous refrigeration and heating are realized.
The start and stop of the diaphragm water pump 22-1 and the diaphragm water pump 22-2 and the opening and closing time of the electromagnetic valves (the first electromagnetic valve 23, the second electromagnetic valve 24, the third electromagnetic valve 25 and the fourth electromagnetic valve 26) are controlled by the programmable controller, the heat exchange fluid is driven by the diaphragm pump 22-1 and the diaphragm water pump 22-2, so that the heat exchange fluid flows into the heat exchanger 31 at the hot end and the cold accumulator 32 at the cold end, and the temperature of the heat exchanger 31 and the cold accumulator 32 is measured by the film platinum resistor, so that the refrigeration and the heating are realized.
The terminology used herein is for the purpose of description and illustration only and is not intended to be limiting. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (6)
1. A single-row multistage tandem dual-field magnetic refrigerator, comprising: the refrigerating bin, the circulating system and the heat exchange system; the refrigeration bin includes: the device comprises a magnetic field system and a working medium bed, wherein a diode refrigerating sheet for controlling the initial temperature of the refrigerating bin is arranged in the refrigerating bin, the diode refrigerating sheet is provided with a temperature sensor, a heat exchanger and a cold accumulator are provided with a thin film platinum resistor, and the thin film platinum resistor is used for recording temperature change; the magnetic field system comprises: at least one pair of double-magnetic-field monomers and a magnetic working medium, wherein the double-magnetic-field monomers are arranged in the refrigerating bin, and the double-magnetic-field monomers are sleeved on the outer side of the working medium bed; the working medium bed is of a closed structure, and the magnetic working medium is fixed in the working medium bed; the double magnetic field monomer is a secondary magnetic field, comprising: an outer yoke steel cylinder, an outer magnet, an inner yoke steel cylinder and an inner magnet; the outer magnet is fixed on the inner wall of the outer magnetic yoke steel cylinder, and the inner magnet is fixed on the inner wall of the inner magnetic yoke steel cylinder; the inner magnetic yoke steel cylinder is sleeved inside the outer magnetic yoke steel cylinder; the inner magnetic yoke steel cylinder is arranged on the first supporting seat, the outer magnetic yoke steel cylinder is arranged on the second supporting seat, the first supporting seat and the second supporting seat are fixed in the refrigerating bin, and the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder is connected with a motor and a speed reducer; the heat exchange system includes: heat exchanger, regenerator, circulation system includes: the diaphragm water pump, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve; the first electromagnetic valve, the second electromagnetic valve and the diaphragm water pump are connected in series on the pipeline, and the third electromagnetic valve, the fourth electromagnetic valve and the diaphragm water pump are connected in series on the pipeline and are respectively connected between the heat exchanger and the cold accumulator in parallel; one end of the working medium bed is connected between the first electromagnetic valve and the third electromagnetic valve through a pipeline, and the other end of the working medium bed is connected between the second electromagnetic valve and the fourth electromagnetic valve through a pipeline; the vacuum pressure gauge is arranged on the pipeline, the circulating system further comprises a programmable controller, and the motor, the vacuum pressure gauge, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are powered by an external power supply; the programmable controller is connected with the motor, the vacuum pressure gauge, the diaphragm water pump, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve through signal wires respectively; the working medium bed, the pipeline, the heat exchanger and the cold accumulator are filled with heat exchange fluid, and a refrigeration box body is arranged outside the cold accumulator.
2. The single-row multistage serial dual-magnetic field magnetic refrigerator of claim 1, wherein flanges are welded at two ends of the working medium bed, the flanges are provided with filter screens, the outer sides of the flanges are connected with supporting plates, and the bottoms of the supporting plates are fixed on the refrigerating bin.
3. The single-row multistage serial dual-magnetic field magnetic refrigerator of claim 1, wherein the magnetic working medium is rare earth metal wire or rare earth metal alloy wire with a diameter of 0.1mm-1mm.
4. A heat exchange method of a single-row multistage tandem type double-field magnetic refrigerator according to any one of claims 1 to 3, comprising:
the programmable controller starts a diaphragm water pump at one side of the cold accumulator, opens the first electromagnetic valve and the second electromagnetic valve, and closes the third electromagnetic valve and the fourth electromagnetic valve;
the programmable controller starts the motor to rotate, the motor and the speed reducer drive the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder to rotate, the magnetic working medium is demagnetized, and the magnetic working medium is cooled;
the magnetic working medium absorbs heat of heat exchange fluid in the working medium bed, the cooled heat exchange fluid enters the regenerator, the temperature of the regenerator is reduced, and refrigeration is realized;
the programmable controller starts a diaphragm water pump at one side of the heat exchanger, opens a third electromagnetic valve and a fourth electromagnetic valve, and closes the first electromagnetic valve and the second electromagnetic valve;
the programmable controller starts the motor to rotate, the motor and the speed reducer drive the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder to rotate, the magnetic working medium is magnetized, and the temperature of the magnetic working medium is raised;
the magnetic working medium heats the heat exchange fluid in the working medium bed, the heated heat exchange fluid enters the heat exchanger, the temperature of the cold accumulator is increased, and heating is realized.
5. The heat exchange method of single-row multistage serial double-magnetic field magnetic refrigerator of claim 4, wherein the programmable controller controls the repeated magnetizing and demagnetizing of the working medium bed by controlling the relative position of the inner magnetic yoke steel cylinder or the outer magnetic yoke steel cylinder, and the magnetic working medium changes the temperature of the heat exchange fluid to realize continuous refrigeration and heating.
6. The heat exchange method of a single-row multistage tandem type double-field magnetic refrigerator of claim 5, wherein the programmable controller controls the relative position of the inner yoke steel cylinder or the outer yoke steel cylinder by controlling the motor to continuously rotate or controlling the motor to rotate in the forward direction and the reverse direction.
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| CN202011633003.0A CN112629057B (en) | 2020-12-31 | 2020-12-31 | Single-row multistage serial double-magnetic-field magnetic refrigerator and heat exchange method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012237496A (en) * | 2011-05-11 | 2012-12-06 | Denso Corp | Magnetic refrigeration system and air conditioner that uses magnetic refrigeration system |
| CN103148634A (en) * | 2011-12-07 | 2013-06-12 | 南京大学 | Rotary type room-temperature magnetic refrigerator based on AMR (active magnetic regenerator) |
| KR20150125866A (en) * | 2014-04-30 | 2015-11-10 | 충북대학교 산학협력단 | Magnetic refrigeration system using concentric halbach cylinders |
| CN109855325A (en) * | 2018-11-06 | 2019-06-07 | 珠海格力电器股份有限公司 | Magnetic refrigerating system and refrigerating plant |
| CN110617649A (en) * | 2019-09-09 | 2019-12-27 | 包头稀土研究院 | Heat circulation system of rotary room temperature magnetic refrigerator |
| CN111043791A (en) * | 2019-12-26 | 2020-04-21 | 珠海格力电器股份有限公司 | Magnetic refrigerating device |
| CN214199264U (en) * | 2020-12-31 | 2021-09-14 | 包头稀土研究院 | Single-row multistage tandem double-magnetic-field magnetic refrigerator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2914051B1 (en) * | 2007-03-19 | 2009-05-08 | Cooltech Applic Soc Par Action | METHOD AND DEVICE FOR INCREASING THE TEMPERATURE GRADIENT IN A MAGNETOCALORIC THERMAL GENERATOR |
| JP5728489B2 (en) * | 2010-10-29 | 2015-06-03 | 株式会社東芝 | Magnetic refrigeration system |
-
2020
- 2020-12-31 CN CN202011633003.0A patent/CN112629057B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012237496A (en) * | 2011-05-11 | 2012-12-06 | Denso Corp | Magnetic refrigeration system and air conditioner that uses magnetic refrigeration system |
| CN103148634A (en) * | 2011-12-07 | 2013-06-12 | 南京大学 | Rotary type room-temperature magnetic refrigerator based on AMR (active magnetic regenerator) |
| KR20150125866A (en) * | 2014-04-30 | 2015-11-10 | 충북대학교 산학협력단 | Magnetic refrigeration system using concentric halbach cylinders |
| CN109855325A (en) * | 2018-11-06 | 2019-06-07 | 珠海格力电器股份有限公司 | Magnetic refrigerating system and refrigerating plant |
| CN110617649A (en) * | 2019-09-09 | 2019-12-27 | 包头稀土研究院 | Heat circulation system of rotary room temperature magnetic refrigerator |
| CN111043791A (en) * | 2019-12-26 | 2020-04-21 | 珠海格力电器股份有限公司 | Magnetic refrigerating device |
| CN214199264U (en) * | 2020-12-31 | 2021-09-14 | 包头稀土研究院 | Single-row multistage tandem double-magnetic-field magnetic refrigerator |
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