CN103245123B - The magnetic thermal modules of magnetic cooling device - Google Patents
The magnetic thermal modules of magnetic cooling device Download PDFInfo
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- CN103245123B CN103245123B CN201210389623.3A CN201210389623A CN103245123B CN 103245123 B CN103245123 B CN 103245123B CN 201210389623 A CN201210389623 A CN 201210389623A CN 103245123 B CN103245123 B CN 103245123B
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- Prior art keywords
- insulating barrier
- magnetic
- thermal modules
- magnetic thermal
- magneto
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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
-
- 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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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Thermal Insulation (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A magnetic thermal modules for magnetic cooling device, comprising: a body, has an inner surface; One magneto-caloric material, fills in this body; And an insulating barrier, be formed on this inner surface, to isolate this magneto-caloric material and this body.Based on the formation of insulating barrier, the heat transfer situation between magnetic material and bed body can be reduced and can avoid betiding the galvanic effect in a body.In addition, the thermograde of magnetic thermal modules in time operating can more be increased.
Description
Technical field
The invention relates to magnetic cooling (magnetic refrigeration) technology, and especially about a kind of magnetic thermal modules (megnetocaloric module) of magnetic cooling device.
Background technology
At present, almost mostly gas compression/expansion circulating technology is adopted as refrigerator, refrigerating chamber, room heating/cooling system and homologue etc. with all cooling technics under the room temperature environment of the closely related application of the daily life of the mankind.But owing to being disposed to the Freon gas (freon gas) in environment, the cooling technic that above-mentioned gas compression/expansion cycle is correlated with has the serious problems of welding.In addition, the alternative gas about freon also merits attention for the negative effect of environment.
Therefore, based on environmental consciousness and more effective cooling technic, proposed the correlative study of the magnetic cooling technology using magnetothermal effect (megnetocaloric effect).So, the research and development for magnetic cooling technology under room temperature environment can be accelerated.
Traditional a kind of magnetic cooling device is disclosed in No. 2010/0058775 U.S. patent application case.As shown in Figure 1, this magnetic cooling device comprises one active magnetic field regenerative refrigeration bed body (the active magnetic regenerative refrigeration bed of the magnetic material 12 filling up tool magnetothermal effect (magnetocaloric effect), AMR bed) 10, being arranged at outside active magnetic field regenerative refrigeration bed body 10 also can move horizontally using the permanent magnet 14 as a magnetic field generation device, one low temperature side heat exchange unit 21, one high temperature side heat exchange unit 31, one conversion equipment (switching means) 40, and a refrigerant pump (refrigerant pump) 50.
Magnetic cooling device as shown in Figure 1 such as uses water as liquid refrigerants (liquid refrigerant).Low temperature side heat exchange unit 21 is the low temperature sides being arranged at active magnetic field regenerative refrigeration bed body 10, and high temperature side heat exchange unit 31 is the high temperature sides being arranged at active magnetic field regenerative refrigeration bed body 10.Conversion equipment 40 is arranged between low temperature side heat exchange unit 21 and high temperature side heat exchange unit 31, to change the flow direction of refrigerant.Refrigerant pump 50 is connected to conversion equipment 40 with as a refrigerant transmitting device.Then, active magnetic field regenerative refrigeration bed 10, conversion equipment 40, low temperature side heat exchange unit 21 and high temperature side heat exchange unit 31 are connected by a pipeline, to form a refrigerant circulation path of liquid refrigerants.
When the operation of the magnetic cooling device shown in Fig. 1, permanent magnet 14 is arranged at the position towards active magnetic field regenerative refrigeration bed body 10 (as shown in Figure 1 position), to apply magnetic material 12 part in magnetic field to active magnetic field regenerative refrigeration bed body 10.Therefore, the magnetic material 12 of tool magnetothermal effect just can produce heat.So, by the operation of refrigerant pump 50 with conversion equipment 40, can circulate according to the direction from active magnetic field regenerative refrigeration bed 10 to high temperature side heat exchange unit 31 this liquid refrigerants.Heat is transported to high temperature side heat exchange unit 31 place by liquid refrigerants, wherein the temperature of liquid refrigerants is the heat that produced by magnetic material 12 and increases.
Afterwards, permanent magnet 14 removes from the position towards active magnetic field regenerative refrigeration bed body 10, thus removes the magnetic field putting on magnetic material 12.Removing by magnetic field, magnetic material 12 absorbs heat.Therefore, by refrigerant pump 50 and conversion equipment 40 according to operation this liquid refrigerants capable of circulation in the direction from active magnetic field regenerative refrigeration bed 10 to high temperature side heat exchange unit 31 to low temperature side heat exchange unit 21 place.By the heat absorption of magnetic material 12, the liquid refrigerants through cooling transmits a lower temperature to low temperature side heat exchange unit 21 place.
Repeatedly magnetic material 12 in active magnetic field regenerative refrigeration bed body 10 applied by mobile permanent magnet 14 and remove a magnetic field, so just can form a thermograde in magnetic material 12 place in active magnetic field regenerative refrigeration bed body 10.Then, apply by Tong Walk and remove magnetic field and mobile liquid refrigerants, just cooling this low temperature side heat exchange unit 21 sustainably.
But, due to the actual connection situation between magnetic material 12 and active magnetic field regenerative refrigeration bed body 10, and the different metal material that magnetic material 12 possesses with active magnetic field regenerative refrigeration bed body 10, so just can cause the problems such as thermal diffusion (thermal dissipation) and galvanic corrosion (Galvanic corrosion) for active magnetic field regenerative refrigeration bed 10, thus impact comprises the heat energy of magnetic cooling device and the reliability of physics of this active magnetic field regenerative refrigeration bed body 10.
Summary of the invention
In view of this, the invention provides a kind of magnetic thermal modules of magnetic cooling device, to reduce the problems such as existing thermal diffusion and galvanic corrosion.
According to an embodiment, the magnetic thermal modules of a kind of magnetic cooling device of the present invention comprises:
A body, has an inner surface; One magneto-caloric material, fills in this body; And an insulating barrier, be formed on this inner surface, to isolate this magneto-caloric material and this body.Based on the formation of insulating barrier, the heat transfer situation between magnetic material and bed body can be reduced and can avoid betiding the galvanic effect in a body.In addition, the thermograde of magnetic thermal modules in time operating can more be increased.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and coordinate appended by graphic, be described in detail below.
Accompanying drawing explanation
Fig. 1 is a schematic diagram, shows existing a kind of magnetic cooling device;
Fig. 2 is a kind of magnetic thermal modules according to one embodiment of the invention;
Fig. 3 is a kind of magnetic thermal modules according to another embodiment of the present invention;
Fig. 4 is a kind of magnetic thermal modules according to another embodiment of the present invention;
Fig. 5 is a kind of magnetic thermal modules according to another embodiment of the present invention;
Fig. 6 is a kind of magnetic thermal modules according to another embodiment of the present invention;
Fig. 7 is a kind of magnetic thermal modules according to another embodiment of the present invention.
Wherein, description of reference numerals is as follows:
10 ~ active magnetic field regenerative refrigeration bed body;
12 ~ magnetic material;
14 ~ permanent magnet;
21 ~ low temperature side heat exchange unit;
31 ~ high temperature side heat exchange unit;
40 ~ conversion equipment;
50 ~ refrigerant pump;
100 ~ bed body;
102 ~ magnetic-particle;
104 ~ insulating barrier;
104a, 104b ~ insulator layer;
104c, 104d ~ insulating barrier;
108 ~ space;
110 ~ inner surface;
150,160 ~ end points;
A, A ', B, B ', C, C ' ~ magnetic thermal modules
Detailed description of the invention
Fig. 2-7 is multiple different embodiments, respectively illustrate a kind of magnetic thermal modules with problems such as less thermal diffusion and galvanic corrosions, wherein magnetic thermal modules as illustrated in figs. 2-7 can be applicable to the active magnetic regenerative refrigeration bed body 10 as the magnetic cooling device of Fig. 1 shown in interior.
Please refer to Fig. 2, show a kind of magnetic thermal modules A according to an embodiment, it comprises a body (bed) 100.In addition, in bed body 100, multiple magnetic-particle 102 and an insulating barrier 104 is formed with.Bed body 100 has relative two-end-point 150 and 160, make as negotiable in the heat transfer fluid such as water (heat transfer fluid) in as described in space 108 between magnetic-particle 102, with in comprising transporting heat energy between the low-temperature end (for one of end points 150 and 160) of this body 100 of a magnetic cooling device (not shown) of magnetic thermal modules A and a temperature end (for another of end points 150 and 160).
In magnetic thermal modules A as shown in Figure 2, the insulating barrier 104 be formed in a body 100 fully covers the inner surface 110 of a body 100, and has isolated magnetic-particle 102 and bed body 100.Therefore, based on the formation of insulating barrier 104, the heat transfer situation between magnetic-particle 102 and bed body 100 can be reduced and can avoid betiding the galvanic effect in a body 100.In addition, the thermograde of magnetic thermal modules A in time operating can more be increased.Insulating barrier 104 shown in Fig. 2 is shown as a single rete, and it only comprises a kind of insulating materials.
Please refer to Fig. 3, show a kind of magnetic thermal modules B according to another embodiment, and be now formed at the insulating barrier 104 in the bed body 10 in magnetic thermal modules B and be made up of two insulator layer 104a and 104b of different materials.Other component of magnetic thermal modules B is then same as magnetic thermal modules A inner member as shown in Figure 2, and based on the object simplified not in this repeated description.As shown in Figure 3, insulator layer 104a and insulator layer 104b covers a different piece of the inner surface 110 of a body 100 respectively, and insulating barrier 104 is the insulating barrier of a complex morphological, it fully covers the inner surface 110 of a body 100 and has isolated magnetic-particle 102 and bed body 100.Therefore, based on the formation of insulating barrier 104, the heat transfer situation between magnetic-particle 102 and bed body 100 can be reduced and can avoid betiding the galvanic effect in a body 100.So, the thermograde when magnetic thermal modules B operates can more be increased.
Please refer to Fig. 4, show a kind of magnetic thermal modules C according to another embodiment, and the insulating barrier 104 of the bed body 100 of magnetic thermal modules C is now two insulating barrier 104c and the 104d comprised made by different materials.Other component of magnetic thermal modules C is then same as the magnetic thermal modules A shown in Fig. 2, and does not lie in this repeated description based on simplification object.As shown in Figure 4, insulating barrier 104c fully covers the inner surface 110 of a body 100, and insulating barrier 104d fully covers a surperficial (not shown) of insulating barrier 104c.Insulating barrier 104 is a compound inslation rete, that includes insulating barrier 104c and 104d, and it has isolated magnetic-particle 102 and bed body 100.Therefore, based on the formation of insulating barrier 104, the heat transfer situation between magnetic-particle 102 and bed body 100 can be reduced and can avoid betiding the galvanic effect in a body 100.So, the thermograde when magnetic thermal modules C operates can more be increased.
Please refer to Fig. 5, show a kind of magnetic thermal modules A ' according to another embodiment of the present invention, and the insulating barrier 104 in the bed body 100 of magnetic thermal modules A ' partly covers an inner surface 110 of a body 100.Other component of magnetic thermal modules A ' then similar in appearance to magnetic thermal modules A as shown in Figure 2, and does not describe at this again based on simplification object.As shown in Figure 5, the insulating barrier 104 be formed in a body 100 partly covers the inner surface 110 of a body 100, and has isolated magnetic-particle 102 and most bed body 100.In this embodiment, the part of the about 0-50% of the inner surface 110 of bed body 100 is for exposing, and based on the formation of insulating barrier 104, the heat transfer situation between magnetic-particle 102 and bed body 100 can be reduced and the galvanic effect that may betide in a body 100 can be reduced.Preferably, the 10-45% of the inner surface 110 of bed body 100 is what expose.So, the thermograde of magnetic thermal modules A ' in time operating can more be increased.Insulating barrier 104 is as shown in Figure 5 formed as single rete and only comprises a kind of insulating materials.
Please refer to Fig. 6, show a kind of magnetic thermal modules B ' according to another embodiment of the present invention, and the insulating barrier 104 in the bed body 100 of magnetic thermal modules B ' is made by two of different materials insulator layer 104a and 104b.Other component of magnetic thermal modules B ' is then same as magnetic thermal modules B as shown in Figure 3, and does not again describe at this based on simplification object.As shown in Figure 6, first insulator layer 104a and the second insulator layer 104b covers a different piece of the inner surface 110 of a body 100 respectively, and insulating barrier 104 is a complex morphological insulating barrier, it fully covers the inner surface 110 of a body 100 and has isolated magnetic-particle 102 and bed body 100.And the second insulator layer 104b partly exposes the inner surface 110 of a body 100.In addition, the part of the about 0-50% of the inner surface 110 of bed body 100 for exposing, and based on the formation of insulating barrier 104, the galvanic effect that thus can reduce the heat transfer situation between magnetic-particle 102 and bed body 100 and may betide in a body 100.Preferably, the 10-45% of the inner surface 110 of bed body 100 is what expose.So more can increase the thermograde of magnetic thermal modules B ' in time operating.
Please refer to Fig. 7, show a kind of magnetic thermal modules C ' according to another embodiment, and the insulating barrier 104 of the interior bed body 100 of magnetic thermal modules C ' is made up of two insulating barrier 104c and 104d of different materials.Other component of magnetic thermal modules C ' is then same as magnetic thermal modules C as shown in Figure 4, and based on simplification object not in this repeated description.As shown in Figure 7, insulating barrier 104c covers the inner surface 110 of most bed body 100 and exposes the part of the inner surface 110 of a body 100, and insulating barrier 104d fully covers a surperficial (not shown) of insulating barrier 104c.In this embodiment, one of the about 0-50% of the inner surface 110 of bed body 100 for exposing, and insulating barrier 104 is a composite film, that includes insulating barrier 104c and 104d and has isolated magnetic-particle 102 and bed body 100.Therefore, based on the formation of insulating barrier 104, the galvanic effect that can reduce the heat transfer situation between magnetic-particle 102 and bed body 100 and may betide in a body 100.Preferably, the 10-45% of the inner surface 110 of bed body 100 is what expose.So, the thermograde of magnetic thermal modules A in time operating can more be increased.
In multiple embodiments as illustrated in figs. 2-7, except reducing the advantage such as thermal diffusion and galvanic corrosion as the aforementioned, be formed at the space 108 that insulating barrier 104 in a body 100 or insulator layer 104a and 104b or the first insulating barrier 104c and the second insulating barrier 104d can deperm between particle 102 further, and then enhance the heat exchanger effectiveness of magnetic thermal modules.Moreover bed body 100 can have as rectangle, cylindrical or other polygonal shape, and can comprise the magnetic penetrable material as steel or iron.Stainless steel is such as STEEL 1004, STEEL 1008, STEEL 1010, STEEL 1002, or SS41.Iron is such as electrical pure iron (electrical pure iron, DT4).The expanded material that insulating barrier 104 or insulator layer 104a and 104b or the first insulating barrier 104c and the first insulating barrier 104d can comprise expanded material (foamed materials), silica gel (silica gel), rubber, gas are filled or latex.Magnetic-particle 102 can comprise magneto-caloric material, such as FeRh, Gd
5si
2ge
2, Gd
5(Si
1-xge
x)
4, RCo
2, La (Fe
13-xsi
x), MnAs
1-xsb
x, MnFe (P, As), MnFe (P, Si), Co (S
1-xse
x)
2, NiMnSn, MnCoGeB, R
1-xm
xmnO
3(where R=lanthanide, M=Ca, Sr and Ba) etc., this description cannot exhaustive magneto-caloric material, but anyly has Curie temperature Tc, and both sides have different magnetic property beyond this Curie temperature Tc temperature range, as paramagnetism and diamagnetic material are preferably the magneto-caloric material that the present invention is suitable for, but should as limit.Magnetic-particle 102 can have other form, such as one netted, sheet, tubulose, column, sheet or honeycomb form, and is not limited with particle shape.
It is noted that, in above-described embodiment, can add the additive for improving effect in fluid passage (being such as fluid passage between two end points 150 and 160 of bed body 100), such as, be a dispersant (dispersant), a corrosion inhibitor (anti-corrosion agent), an antifreeze (antifreeze) or a drag reducer (drag-reduction agent).Dispersant can be and is incorporated in an on-surface-active polymer in a suspension (being generally colloid) or a surface-active polymer, to improve the distributed state of ion and to avoid deposition or caking situation.Dispersant generally includes one or more interfacial agent, but also to can be gaseous state.Corrosion inhibitor (or corrosion inhibitor) prevents magneto-caloric material (particle) from avoiding being corroded or corrosion after the circulation that fluid penetrates.Antifreeze is then in order to avoid the freeze situation of working fluid in the cooling processing procedure of part.Drag reducer is then for being applied to the long-chain polymer in crude oil, refining product or undrinkable water pipeline.It is only a little injection rate (a few millionths), and for reducing the friction pressure reduced along length of pipeline.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when doing to change and retouching, therefore protection scope of the present invention is when being as the criterion depending on the accompanying right person of defining.
Claims (15)
1. a magnetic thermal modules for magnetic cooling device, is characterized in that, comprising:
A body, has an inner surface, and this body comprises magnetic penetrable material;
One magneto-caloric material, fills in this body; And
One insulating barrier, is formed on this inner surface, to isolate this magneto-caloric material and this body.
2. magnetic thermal modules as claimed in claim 1, it is characterized in that, this insulating barrier covers this inner surface of this body completely, and this magneto-caloric material does not contact this inner surface of this body.
3. magnetic thermal modules as claimed in claim 2, it is characterized in that, this insulating barrier is a monofilm layer.
4. magnetic thermal modules as claimed in claim 2, it is characterized in that, this insulating barrier is a composite film, comprises the first insulator layer and one second insulator layer, and this first insulator layer and this second insulator layer cover a different piece of this inner surface of this body respectively.
5. magnetic thermal modules as claimed in claim 2, it is characterized in that, this insulating barrier is a composite film, comprises one first insulating barrier and one second insulating barrier, this first insulating barrier covers this inner surface of this body completely, and this second insulating barrier covers a surface of this first insulating barrier completely.
6. magnetic thermal modules as claimed in claim 1, it is characterized in that, this insulating barrier covers this inner surface most of this body, and the 0-50% of this inner surface of this body is what expose, makes this magneto-caloric material partly contact this inner surface of this body.
7. magnetic thermal modules as claimed in claim 1, it is characterized in that, this insulating barrier covers this inner surface most of this body, and the part of the 10-45% of this inner surface of this body is for what expose, makes this magneto-caloric material partly contact this inner surface of this body.
8. magnetic thermal modules as claimed in claims 6 or 7, it is characterized in that, this insulating barrier is a single rete.
9. magnetic thermal modules as claimed in claims 6 or 7, it is characterized in that, this insulating barrier is the composite film comprising one first insulator layer and one second insulator layer, and this one of first insulator layer and this second insulator layer expose a part for this inner surface of this body.
10. magnetic thermal modules as claimed in claims 6 or 7, it is characterized in that, this insulating barrier is a composite bed, comprise one first insulating barrier and one second insulating barrier, and this first insulating barrier part covers this inner surface of this body, and this second insulating barrier fully covers a surface of this first insulating barrier.
11. magnetic thermal modules as claimed in claim 1, it is characterized in that, this magnetic penetrable material comprises steel or iron.
12. magnetic thermal modules as claimed in claim 1, is characterized in that, the cylindric or polygon of the shape of this body.
13. magnetic thermal modules as claimed in claim 1, it is characterized in that, this insulating barrier comprises expanded material, silica gel, rubber, inflation expanded material or latex.
14. magnetic thermal modules as claimed in claim 1, it is characterized in that, this magneto-caloric material comprises FeRh, Gd
5si
2ge
2, Gd
5(Si
1-xge
x)
4, RCo
2, La (Fe
13-xsi
x), MnAs
1-xsb
x, MnFe (P, As), MnFe (P, Si), Co (S
1-xse
x)
2, NiMnSn, MnCoGeB or R
1-xm
xmnO
3, wherein R is lanthanide series, and M is Ca, Sr or Ba.
15. magnetic thermal modules as claimed in claim 1, is characterized in that, the shape of this magneto-caloric material is graininess, netted, sheet, tubulose, column or honeycomb.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/363,940 | 2012-02-01 | ||
| US13/363,940 US20130192269A1 (en) | 2012-02-01 | 2012-02-01 | Magnetocaloric module for magnetic refrigeration apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103245123A CN103245123A (en) | 2013-08-14 |
| CN103245123B true CN103245123B (en) | 2015-07-29 |
Family
ID=48783681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210389623.3A Expired - Fee Related CN103245123B (en) | 2012-02-01 | 2012-10-15 | The magnetic thermal modules of magnetic cooling device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20130192269A1 (en) |
| CN (1) | CN103245123B (en) |
| DE (1) | DE102012110620A1 (en) |
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- 2012-02-01 US US13/363,940 patent/US20130192269A1/en not_active Abandoned
- 2012-10-15 CN CN201210389623.3A patent/CN103245123B/en not_active Expired - Fee Related
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| CN102032707A (en) * | 2009-09-17 | 2011-04-27 | 台达电子工业股份有限公司 | Magnetic refrigerating structure |
Also Published As
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| CN103245123A (en) | 2013-08-14 |
| DE102012110620A1 (en) | 2013-08-01 |
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