CN102305491A - Swing type room temperature magnetic refrigeration machine - Google Patents
Swing type room temperature magnetic refrigeration machine Download PDFInfo
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- CN102305491A CN102305491A CN201110253057A CN201110253057A CN102305491A CN 102305491 A CN102305491 A CN 102305491A CN 201110253057 A CN201110253057 A CN 201110253057A CN 201110253057 A CN201110253057 A CN 201110253057A CN 102305491 A CN102305491 A CN 102305491A
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- heat exchanger
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000000696 magnetic material Substances 0.000 claims description 22
- 230000035699 permeability Effects 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 16
- 230000005284 excitation Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 230000004087 circulation Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical group 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 description 7
- 230000005347 demagnetization Effects 0.000 description 7
- 230000009102 absorption Effects 0.000 description 6
- 239000002775 capsule Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000013529 heat transfer fluid Substances 0.000 description 3
- JTCFNJXQEFODHE-UHFFFAOYSA-N [Ca].[Ti] Chemical compound [Ca].[Ti] JTCFNJXQEFODHE-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical group 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- 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
- 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
- F25B2321/0021—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a static fixed magnet
-
- 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)
- Linear Motors (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a swing type room temperature magnetic refrigeration machine, which comprises a permanent magnet magnetic field source system, a magnetic working medium turntable system, a fluid heat exchange system and a motion control system, wherein the motion control system controls a turntable box of the magnetic working medium turntable system to rotate so as to drive a magnetic working medium to get in or get out a magnetic field space; the magnetic working medium positioned in the magnetic field space is magnetized to release heat; heat transmission fluid flows towards a hot-end heat exchanger so as to transmit the heat produced by the magnetic working medium to the hot-end heat exchanger; the hot-end heat exchanger transmits the heat to a high temperature space; the magnetic working medium which is not positioned in the magnetic field space is demagnetized to absorb heat; the heat transmission fluid flows towards a cold-end heat exchanger; and the magnetic working medium absorbs the heat from a low temperature closed space through the fluid and the cold-end heat exchanger, so that a refrigeration effect at room temperature can be achieved and the structure of the magnetic refrigeration machine is simplified. The swing type room temperature magnetic refrigeration machine has the advantage of simple structure of a reciprocating room temperature magnetic refrigeration machine and the advantage of high efficiency of a rotary room temperature magnetic refrigeration machine.
Description
Technical field
The present invention relates to a kind of magnetic refrigerator, relate in particular to a kind of swing type room-temperature magnetic refrigerator.
Background technology
At present, room temperature magnetic refrigerating research is worldwide actively developed, and mainly concentrates on the preparation of magnetic refrigerating material and the research aspect of magnetic refrigeration model machine.
(1) Gd and compound thereof.The most typical material of making magnetic kind of refrigeration cycle working medium is lanthanide rare metal gadolinium Gd at present.The Curie temperature of Gd is 293K, near room temperature, and has bigger magnetothermal effect.
(2) perovskite and perovskite-like compounds.In recent years, found simultaneously in calcium titanium ore manganose oxide that big magnetic entropy changes, and caused the extensive concern to said material therefrom with super large magnetothermal effect.The great advantage of this series compound is to reduce greatly with Gd and GdSiGe cost, stable chemical performance (need not consider anti-oxidation problem), and coercivity is little and resistivity is big.This series compound can be regulated its Curie temperature to required scope easily through the doping of sample, descends too much but can cause magnetic entropy to become simultaneously, and in addition, the calcium titanium ore manganose oxide thermal conductivity is too low, is unfavorable for conducting heat, and practicality reduces.
(3) compound between rare earth-transition metal.Except that above-mentioned GdSiGe series compound, compound also has bigger magnetic entropy change between other rare earth-transition metal, and can carry out the adjusting of Curie temperature easily through ion doping.MnFePAs, MnAsSb, NiMnGa, La (Fe, Si) 13 etc. for example.
The room temperature magnetic refrigerating model machine that occurs mainly contains two kinds of forms, reciprocating room temperature magnetic refrigerating machine and rotary room-temperature magnetic refrigerators at present.Reciprocating typely have an inefficient shortcoming, rotary then have complex structure, working medium dish to receive shortcomings such as monolateral power effect.
Summary of the invention
Reciprocating room temperature magnetic refrigerating machine efficient is low to receive shortcomings such as monolateral power effect with rotary room-temperature magnetic refrigerator complex structure, working medium dish in order to solve, and the invention provides a kind of swing type room-temperature magnetic refrigerator.Said technical scheme is following:
A kind of swing type room-temperature magnetic refrigerator comprises magnetic field of permanent magnet origin system, magnetic working medium rotating table system, fluid thermal exchange system, kinetic control system;
Magnetic field of permanent magnet origin system: be symmetrical set by two identical permanent magnet systems; Said permanent magnet systems; Comprise permanent magnet that excitation source is provided and the E type magnetic conduction framework that plays the magnetic conduction effect; The magnetic core of said magnetic conduction frame mid portion is divided into two intervals up and down with whole framework, and the outer end of said magnetic core is outstanding up and down platform structure; Be respectively equipped with two-layer permeability magnetic material in two intervals up and down; The outer end of said permeability magnetic material is concordant with the outer end of magnetic core; Inner and frame inner wall leaves the gap; Form the working clearance between the platform of permeability magnetic material and magnetic core, in the intervals of business the interior permanent magnet of inserting different magnetizing directions by the definite direction of Halbach rotation theorem between Wai magnetic conduction framework region;
Magnetic working medium rotating table system: comprise rotating shaft and be fixed in eight rotating disk boxes in the rotating shaft; The rotating disk box divides two-layer up and down; Four every layer; And be symmetrical set, its at the middle and upper levels in symmetrical two rotating disk boxes and the lower floor two symmetrical rotating disk boxes lay respectively in four working clearances of two permanent magnet systems; In eight rotating disk boxes, place magnetic working medium respectively, magnetic working medium passes in and out magnetic field with the rotation of rotating shaft; Said four magnetic working medium boxes that are arranged in the working clearance connect and compose the heating group successively through fluid line, and all the other four magnetic working medium boxes connect and compose the heat absorption group successively through fluid line;
Said fluid thermal exchange system comprises hot-side heat exchanger, cryogenic seal space and is enclosed in cold-side heat exchanger wherein; Realize refrigeration through kinetic control system control; Said process of refrigerastion is: pipeline flows through four magnetic working medium of heat absorption group to fluid in the driving lower edge of water pump; The cold-side heat exchanger of flowing through again; The fluid that flows out cold-side heat exchanger flows through four magnetic working medium of heat release group; The hot-side heat exchanger of flowing through again, the hot junction is lost to heat in the air.
Said kinetic control system: comprise programmable controller (PLC), stepper motor and magnetic valve, totally 4 of said magnetic valves are divided into two groups; The control procedure of said kinetic control system is: giving an order when programmable controller makes and gets into field regions under the drive of one group of magnetic working medium box at stepper motor; Programmable controller was given an order and was made one group of magnetic valve and water pump open this moment, accomplished a process of refrigerastion; Programmable controller controls stepper motor turning cylinder rotates 90 degree then, makes another group magnetic working medium box get into magnetic field; Programmable controller give an order switch to another the group magnetic valve open, accomplish second process of refrigerastion; Programmable controller controls stepper motor turning cylinder oppositely turn 90 degrees then, repeats first process of refrigerastion, and circulation is freezed successively.
Said permeability magnetic material is fixed on the E type magnetic conduction framework.
Said outstanding berm width accounts for 30%～50% of magnetic core width.
Leave the gap between the permanent magnet that said permeability magnetic material inner face and one of which side are filled.
The width of said permeability magnetic material is identical with outstanding berm width.
The cross section of said permanent magnet system is fan-shaped.
Described permanent magnet is a rare-earth Nd-Fe-B permanent magnet; Described conducting magnet core framework and permeability magnetic material are electrical pure iron.
Principle of the present invention is: shaft swing drives magnetic working medium turnover magnetic field space; Be in the magnetic working medium magnetization heat release of magnetic field space; Heat transfer fluid flow is passed to hot-side heat exchanger with what magnetic working medium produced with heat to hot-side heat exchanger, and hot-side heat exchanger is passed to high-temperature space with heat again; In the magnetic working medium demagnetization heat absorption of magnetic field space, heat-transfer fluid does not flow to cold-side heat exchanger, and magnetic working medium absorbs heat through fluid, cold-side heat exchanger from the cryogenic seal space.
The effect and the advantage of technical scheme provided by the invention are:
(1) passes through the motion that motion control unit is controlled magnetic working medium rotating disk box; Utilize the control solenoid directional control valve to realize the control that heat-transfer fluid is flowed to; Originally two independent fluid circulations are integrated into a fluid circulation; Thereby accomplish the cyclic process of magnetic refrigerator; Reach the refrigeration under the room temperature, simplified the magnetic refrigerator structure; The advantage of simple structure that had both had reciprocating room temperature magnetic refrigerating machine has the high advantage of efficient of rotary room-temperature magnetic refrigerator again.
(2) owing to adopted two air gap permanent magnet body structures, the symmetrical fixed and arranged of 180 degree has reduced the suffered monolateral pulling force of magnetic, the axial force of magnetic working medium rotating disk effectively, has increased the service life of rotating disk.
(3) turning cylinder moves with the mode that 90 amplitudes of spending swing, and the fluid line that connects magnetic working medium rotating disk box is almost motionless, has avoided tangling of pipeline, and fluid-duct-system is simplified greatly, has reduced cost.
(4) magnetic working medium rotating disk box internal flow pipeline adopts the multi-stag series connection, has further like this simplified pipeline structure and can realize the step-feeding refrigeration.
(5) permanent magnet systems of the present invention has following advantage: have the symmetrical structure of two air-gaps, can carry out excitation (demagnetization) to two parts magnetic working medium simultaneously, thereby can make the room-temperature magnetic refrigerator structure compact more, efficient; Air-gap magnetic field intensity good uniformity has reduced the heat exchange between the working medium in excitation (demagnetization) process of magnetic working medium, thereby improves refrigerating efficiency; Symmetrical structure with two air-gaps is installed and properly can greatly be reduced axial force, reduces input power, improves refrigerating efficiency; Have bigger gap field space, help loading more magnetic working medium, improve the refrigerating capacity of room-temperature magnetic refrigerator.
Description of drawings
Fig. 1 is the generalized section of permanent magnet systems of the present invention.
Fig. 2 is the used permanent magnet systems structural representation of swing type room-temperature magnetic refrigerator.
Fig. 3 is that swing type room-temperature magnetic refrigerator excitation source permanent magnet is arranged sketch map.
Fig. 4 is a working medium rotating disk box fluid circuit wiring schematic diagram in the swing type room-temperature magnetic refrigerator.
Fig. 5 is the swing type motion sketch map of swing type room-temperature magnetic refrigerator.
Fig. 6 is a swing type room-temperature magnetic refrigerator principle schematic.
Fig. 7 is the magnetic line of force distribution map of magnet structure.
Fig. 8 is the scatter chart of magnetic field intensity in the working clearance.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage can clearly highlight explanation, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Present embodiment provides a kind of swing type room-temperature magnetic refrigerator, comprises magnetic field of permanent magnet origin system, magnetic working medium rotating table system, fluid thermal exchange system, kinetic control system.
Magnetic field of permanent magnet origin system: be symmetrical set by two identical permanent magnet systems; This permanent magnet systems; Cross-section structure as shown in Figure 1; The three-dimensional structure sketch map as shown in Figure 2; Comprise permanent magnet that excitation source is provided and the E type magnetic conduction framework 9 that plays the magnetic conduction effect; The magnetic core 3 at said magnetic conduction framework 9 middle parts is divided into two intervals up and down with whole framework, and the outer end of said magnetic core 3 is outstanding up and down platform structure; Said outstanding berm width accounts for 40% of magnetic core width.Be respectively equipped with two-layer permeability magnetic material 1,5 in two intervals up and down, said permeability magnetic material 1,5 is fixed on the E type magnetic conduction framework 9.The outer end of said permeability magnetic material 1,5 is concordant with the outer end of magnetic core 3; Inner and framework 9 inwalls leave the gap; The outstanding up and down platform 4 of permeability magnetic material 1,5 and magnetic core, form the working clearance between 2, insert the permanent magnet 6,7,8,10,11,12 of different magnetizing directions in the intervals of business between Wai permeability magnetic material 1,5 and the framework 9 by the definite direction of Halbach rotation theorem.The permanent magnet 8 of said permeability magnetic material 1,5 inner faces and filling, leave the gap between 10, and the width of permeability magnetic material is identical with outstanding up and down platform 4,2 width, increases the size and the uniformity in magnetic field with this.Described permanent magnet is a rare-earth Nd-Fe-B permanent magnet; Described conducting magnet core framework and permeability magnetic material are electrical pure iron.The magnetic field distribution of working clearance below the magnetic field distribution of working clearance above the curve representative on Fig. 8 top, the curve representative of bottom.It is thus clear that the fan-shaped permanent magnet working clearance that rotary type magnetic refrigerating device is used is very big, and the magnetic refrigeration working substance Metal Gd is all filled in this space, its quality reaches 3100g.Dwindle the size of working clearance or increase magnet relative size, the magnetic field intensity of working clearance will further increase.In magnetic refrigerator, adopt two cover magnet system and two groups of magnetic working medium, for this structure, the axial magnetic pull that whole system is produced is zero with magnetic pull radially basically.
As shown in Figure 3, with the symmetrical fixed and arranged of two identical permanent magnet systems shown in Figure 1,180 degree, layout can better be brought into play the advantage of two air-gap fields like this, reduces magnetic working medium rotating disk box axial force and the monolateral power of magnetic.Magnetic working medium rotating disk box is installed in the plane of two-layer magnetic field air gap, and turning cylinder is positioned at and is used for driven magnetic working medium turnover magnetic field on the central axis.
Magnetic working medium rotating table system: comprise rotating shaft and be fixed in eight rotating disk boxes in the rotating shaft; Characteristics according to excitation source; Design magnetic working medium rotating disk box is a double-decker; Each layer is divided into 4 again; And be symmetrical set; Load magnetic working medium (Metal Gd) in the rotating disk box, its at the middle and upper levels in symmetrical two rotating disk boxes and the lower floor two symmetrical rotating disk boxes lay respectively in four working clearances of two permanent magnet systems; Said magnetic working medium is magnetic refrigerating material, and magnetic working medium passes in and out magnetic field with the rotation of rotating shaft; When refrigerator operation, always have the magnetic working medium of half to be in the excitation heat release like this, half is in demagnetization heat absorption state, has improved refrigerating efficiency with traditional rotary comparing.
For clear explanation magnetic working medium rotating disk box fluid circuit wiring situation; As shown in Figure 4, bilevel box body is placed in the same plane illustrates, dotted portion is the magnet position; Between can simple and easy representative field regions, 1,2,3,4,5,6,7,8 for being mounted with the capsule of magnetic working medium.Magnetic working medium 1,3,5 and 7 among Fig. 4 is excitation in magnetic field just, allows heat, solid line represent the heat exchanging fluid pipeline that is connected successively 1,3,7 and 5, leads to the hot junction at last and carries out heat exchange.Remaining magnetic working medium 2,4,6 and 8 also adopts similar method to be connected, and representes like dotted line.The method that adopts step-feeding to be connected in series links together the magnetic working medium capsule of bilevel excitation (demagnetization) state with pipeline, this method has been simplified the fluid circuit layout greatly, can realize that classification freezes simultaneously.
Why room-temperature magnetic refrigerator provided by the present invention is called swing type, its maximum characteristics be exactly its motion mode neither traditional reciprocating linear type neither be traditional rotary, but adopt similar the swing of the pendulum formula.During operation, turning cylinder is rotated counterclockwise 90 degree earlier, the temporary 4S of turning cylinder, and through-flow body, dextrorotation turn 90 degrees again, and turning cylinder suspends 4S once more, through-flow body, so circular flow.Shuttle-type characteristics are exactly to exist pipeline to be entangled with the problem of winding, needn't be equipped with complicated fluid flat valve, so fluid circuit can be accomplished as reciprocating type simple; Owing to be the quick location that angular movement can realize magnetic working medium box, improve the running frequency of refrigeration machine simultaneously.
Said fluid thermal exchange system comprises hot-side heat exchanger, cryogenic seal space and is enclosed in cold-side heat exchanger wherein; Realize refrigeration through kinetic control system control, said kinetic control system: comprise programmable controller, stepper motor and magnetic valve, totally 4 of said magnetic valves are divided into two groups.Below in conjunction with accompanying drawing process of refrigerastion is further described:
As shown in Figure 5 be magnetic working medium rotating disk box top section; Under the initial state, 1,3 excitation heat releases, 2,4 demagnetization heat absorptions; After being rotated counterclockwise 90 degree; 1,3 demagnetization heat absorptions, 2,4 excitation heat releases, turning cylinder suspends; Through-flow body heat transferring; Dextrorotation turn 90 degrees and gets back to original position again, the operation of circulation above-mentioned steps, thereby the refrigeration of realization.
As shown in Figure 6, under the diagram initial state, begin:
1. magnetic working medium capsule 1,3,5,7 is in excited state, and magnetic working medium capsule 2,4,6,8 is in demagnetized state.
2. open water pump, magnetic valve K2 and K3 through programmable controller controls; Close magnetic valve K1, K4; Fluid (direction of arrow is the fluid motion direction) under the driving of pump flows through 2,4,6,8 passes to cold junction with low temperature; The fluid that flows out cold junction flows through 1,3,5,7 and takes its liberated heat to hot junction; The hot junction is lost to heat in the air, and fluid flows out the hot junction accomplishes a circulation., heat that fluid produces magnetic working medium switches off the pump after passing away.
3. programmable controller controls step motor drive turning cylinder is rotated counterclockwise 90 degree, and magnetic working medium capsule 1,3,5,7 is in demagnetized state, and magnetic working medium capsule 2,4,6,8 is in excited state.
4. programmable controller controls is opened water pump, magnetic valve K1 and K4; Close magnetic valve K2 and K3; Fluid flows through 1,3,5,7 under the driving of pump passes to cold-side heat exchanger with low temperature; The fluid that flows out cold-side heat exchanger flows through 2,4,6,8 and takes its liberated heat to hot-side heat exchanger; The hot junction is lost to heat in the air, and fluid flows out the hot junction accomplishes a circulation., heat that fluid produces magnetic working medium switches off the pump after passing away.
5. the dextrorotation of kinetic control system control step motor-driven turning cylinder turn 90 degrees, and gets back to step 1..The above step of circular flow realizes refrigeration.
Claims (8)
1. a swing type room-temperature magnetic refrigerator is characterized in that, comprises magnetic field of permanent magnet origin system, magnetic working medium rotating table system, fluid thermal exchange system, kinetic control system;
Magnetic field of permanent magnet origin system: be symmetrical set by two identical permanent magnet systems; Said permanent magnet systems; Comprise permanent magnet that excitation source is provided and the E type magnetic conduction framework that plays the magnetic conduction effect; The magnetic core of said magnetic conduction frame mid portion is divided into two intervals up and down with whole framework, and the outer end of said magnetic core is outstanding up and down platform structure; Be respectively equipped with two-layer permeability magnetic material in two intervals up and down; The outer end of said permeability magnetic material is concordant with the outer end of magnetic core; Inner and frame inner wall leaves the gap; Form the working clearance between the platform of permeability magnetic material and magnetic core, in the intervals of business the interior permanent magnet of inserting different magnetizing directions by the definite direction of Halbach rotation theorem between Wai magnetic conduction framework region;
Magnetic working medium rotating table system: comprise rotating shaft and be fixed in eight rotating disk boxes in the rotating shaft; The rotating disk box divides two-layer up and down; Four every layer; And be symmetrical set, its at the middle and upper levels in symmetrical two rotating disk boxes and the lower floor two symmetrical rotating disk boxes lay respectively in four working clearances of two permanent magnet systems; In eight rotating disk boxes, place magnetic working medium respectively, magnetic working medium passes in and out magnetic field with the rotation of rotating shaft; Said four magnetic working medium boxes that are arranged in the working clearance connect and compose the heating group successively through fluid line, and all the other four magnetic working medium boxes connect and compose the heat absorption group successively through fluid line;
Said fluid thermal exchange system comprises hot-side heat exchanger, cryogenic seal space and is enclosed in cold-side heat exchanger wherein; Realize refrigeration through kinetic control system control; Said process of refrigerastion is: pipeline flows through four magnetic working medium of heat absorption group to fluid in the driving lower edge of water pump; The cold-side heat exchanger of flowing through again, the fluid that flows out cold-side heat exchanger flows through four magnetic working medium of heat release group, the hot-side heat exchanger of flowing through again.
2. magnetic refrigerator according to claim 1 is characterized in that, said kinetic control system: comprise programmable controller, stepper motor and magnetic valve, totally 4 of said magnetic valves are divided into two groups; The control procedure of said kinetic control system is: giving an order when programmable controller makes and gets into field regions under the drive of one group of magnetic working medium box at stepper motor; Programmable controller was given an order and was made one group of magnetic valve and water pump open this moment, accomplished a process of refrigerastion; Programmable controller controls stepper motor turning cylinder rotates 90 degree then, makes another group magnetic working medium box get into magnetic field; Programmable controller give an order switch to another the group magnetic valve open, accomplish second process of refrigerastion; Programmable controller controls stepper motor turning cylinder oppositely turn 90 degrees then, repeats first process of refrigerastion, and circulation is freezed successively.
3. magnetic refrigerator according to claim 1 and 2 is characterized in that, said permeability magnetic material is fixed on the E type magnetic conduction framework.
4. magnetic refrigerator according to claim 3 is characterized in that, said outstanding berm width accounts for 30%～50% of magnetic core width.
5. magnetic refrigerator according to claim 4 is characterized in that, leaves the gap between the permanent magnet that said permeability magnetic material inner face and one of which side are filled.
6. magnetic refrigerator according to claim 5 is characterized in that, the width of said permeability magnetic material is identical with outstanding berm width.
7. magnetic refrigerator according to claim 6 is characterized in that, the cross section of said permanent magnet system is fan-shaped.
8. magnetic refrigerator according to claim 7 is characterized in that, described permanent magnet is a rare-earth Nd-Fe-B permanent magnet; Described conducting magnet core framework and permeability magnetic material are electrical pure iron.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253057.9A CN102305491B (en) | 2011-08-30 | 2011-08-30 | Swing type room temperature magnetic refrigeration machine |
| PCT/CN2011/084871 WO2013029328A1 (en) | 2011-08-30 | 2011-12-29 | Swinging magnetic refrigerator under room temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253057.9A CN102305491B (en) | 2011-08-30 | 2011-08-30 | Swing type room temperature magnetic refrigeration machine |
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| CN102305491A true CN102305491A (en) | 2012-01-04 |
| CN102305491B CN102305491B (en) | 2014-05-07 |
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| CN201110253057.9A Expired - Fee Related CN102305491B (en) | 2011-08-30 | 2011-08-30 | Swing type room temperature magnetic refrigeration machine |
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| WO (1) | WO2013029328A1 (en) |
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| CN112484335A (en) * | 2020-12-22 | 2021-03-12 | 包头稀土研究院 | Magnetic refrigerator with magnetic field positioning function and positioning method |
| CN112594960B (en) * | 2020-12-31 | 2024-06-25 | 包头稀土研究院 | Double-row multistage serial double-magnetic field magnetic refrigerator and heat exchange method thereof |
| CN112629058B (en) * | 2020-12-31 | 2024-03-29 | 包头稀土研究院 | Single-row multistage serial magnetic refrigerator and heat exchange method thereof |
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| WO2015154684A1 (en) * | 2014-04-11 | 2015-10-15 | 佛山市川东磁电股份有限公司 | Rotary series magnetic refrigeration system |
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| CN108007013A (en) * | 2017-11-27 | 2018-05-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic cooling assembly and there is its magnetic refrigerator |
| CN108007013B (en) * | 2017-11-27 | 2023-10-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic refrigeration assembly and magnetic refrigerator with same |
| CN110926055A (en) * | 2018-09-20 | 2020-03-27 | 青岛海尔智能技术研发有限公司 | Magnetic refrigeration heat exchange system and control method thereof |
| CN110926056A (en) * | 2018-09-20 | 2020-03-27 | 青岛海尔智能技术研发有限公司 | Magnetic refrigeration heat exchange system and control method thereof |
| CN109612151A (en) * | 2018-12-06 | 2019-04-12 | 珠海格力电器股份有限公司 | Magnetic refrigerating device |
| CN109612151B (en) * | 2018-12-06 | 2024-05-24 | 珠海格力电器股份有限公司 | Magnetic refrigerating device |
| 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 |
| CN110864471B (en) * | 2019-11-27 | 2021-06-08 | 横店集团东磁股份有限公司 | Magnetic refrigeration device with transmission power, method and application |
| CN110864471A (en) * | 2019-11-27 | 2020-03-06 | 横店集团东磁股份有限公司 | Magnetic refrigeration device with transmission power, method and application |
| CN112665210A (en) * | 2020-12-31 | 2021-04-16 | 包头稀土研究院 | Single-row multistage tandem type double-magnetic-field refrigerating bin and refrigerating and heating method thereof |
| CN112629061A (en) * | 2020-12-31 | 2021-04-09 | 包头稀土研究院 | Magnetic field refrigeration heat exchange fluid circulation system and heat circulation method thereof |
| CN112665210B (en) * | 2020-12-31 | 2024-03-29 | 包头稀土研究院 | Single-row multistage serial double-magnetic-field refrigerating bin and refrigerating and heating method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013029328A1 (en) | 2013-03-07 |
| CN102305491B (en) | 2014-05-07 |
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