CN101305250A - Magnetic refrigerator - Google Patents
Magnetic refrigerator Download PDFInfo
- Publication number
- CN101305250A CN101305250A CNA2006800419894A CN200680041989A CN101305250A CN 101305250 A CN101305250 A CN 101305250A CN A2006800419894 A CNA2006800419894 A CN A2006800419894A CN 200680041989 A CN200680041989 A CN 200680041989A CN 101305250 A CN101305250 A CN 101305250A
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- China
- Prior art keywords
- magnetic
- heat
- heat exchange
- magnetocaloric material
- transfer fluid
- Prior art date
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- 238000012546 transfer Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 115
- 239000013529 heat transfer fluid Substances 0.000 claims description 102
- 238000000034 method Methods 0.000 claims description 6
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 5
- 230000019771 cognition Effects 0.000 claims description 5
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000005219 brazing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 28
- 230000004087 circulation Effects 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000005144 thermotropism Effects 0.000 description 1
Images
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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/002—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects
- F25B2321/0022—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a rotating or otherwise moving magnet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Hard Magnetic Materials (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to a magnetic refrigerator having independent hot heat exchange unit and cold heat exchange unit wherein separate heat transfer fluids are circulated.
Description
Technical field
The present invention relates to magnetic refrigerator, this magnetic refrigerator has the independently hot heat exchange unit and the cold heat exchange unit of the separative heat-transfer fluid of circulate among.
Background technology
A kind of conventional magnetic refrigerator is disclosed in No. the 6668560th, United States Patent (USP).As depicted in figs. 1 and 2, according to this routine magnetic refrigerator, when the heat-transfer fluid 17 that enters into cold side ingress port 22 by cold side (cold side) entry conductor 21 flows to hot side (hot side) outlet port 34, this heat-transfer fluid 17 absorbs the magnetocaloric effect of magnetocaloric materials 12 (being applied in magnetic field) and the heat that generates, then withdraw to hot side outlet conduit 33, with cooling magnetocaloric material 12 by hot side outlet port 34.Hot side sequentially by hot side outlet conduit 33, valve 71, pump 60 and heat exchanger 62, then flow in the magnetic Heat Room 13.In hot side entrance conduit 31, hot side is divided into hot side entrance conduit 31 and cold side outlet port 23, and hot side merges into cold side at cold side delivery channel 24 places, then advances to valve 74.When hot side when hot side entrance port 32 moves to cold side delivery channel 24, hot side is because of being cooled by the magnetocaloric material 12 that is cooled off by hot side.Then flow to conduit 83 and 21 by cold heat exchanger 63, with repetitive cycling (omitted detailed description, the abridged label is referring to No. the 6668560th, United States Patent (USP)) through the cold side of valve 74.
Summary of the invention
As mentioned above, because conventional magnetic refrigerator comprises between 12 magnetic heat exchange that 4 valves 71,72,73 and 74, and the conduit more than 24 are so be difficult to make conventional magnetic refrigerator.
And, because circulate single heat-transfer fluid, to be used as hot side and cold side simultaneously, promptly, because hot side enters with by cold magnetocaloric material (referring to Fig. 2) and be cooled and enter cold side at hot side entrance port 32, withdraw from by cold side delivery channel 24, so deterioration heat exchange efficiency.This point draws according to the following fact: when the heat-transfer fluid with temperature lower than the hot side temperature that enters hot side entrance port 32 enters hot side entrance port 32 and passes through the heat material of cooling, at cold side delivery channel 24 places, can flow out heat-transfer fluid, thereby improve heat exchange efficiency with lower temperature.
In addition because uncontrolled through the amount of the heat-transfer fluid of overheated side, so the heat of magnetocaloric material can not be cooled off rapidly, thus, deterioration heat exchange efficiency.
On the other hand, when magnetocaloric material through between the magnetic heat exchange time, magnetocaloric material and heat-transfer fluid cause oxidation in being in and directly contacting thus.
And the magnetocaloric material of power-type is through between the magnetic heat exchange time, and loss during by export department (mesh portion), and magnetocaloric material may be according to the intensity of heat-transfer fluid and in export department's place's accumulation causes and hinders it and flow.
Technical problem
The purpose of this invention is to provide a kind of wherein be divided into hot side and cold side with simplified structure, realize high thermal efficiency and can control the magnetic refrigerator of the amount of heat-transfer fluid.
To achieve these goals, provide a kind of magnetic refrigerator, it comprises: a plurality of magnetic heat exchange units, described a plurality of magnetic heat exchange units comprise the magnetocaloric material that heat transfer stream cognition flows through; Swivel plate, the described a plurality of magnetic heat exchange units along the periphery of this swivel plate is provided with have preset distance between described a plurality of magnetic heat exchange units; Magnet, this magnet are arranged between the lower surface of the upper surface of described swivel plate and described swivel plate, described magnet described a plurality of magnetic heat exchange units by the time apply magnetic field to increase temperature; Hot heat exchanger components, this hot heat exchanger components is arranged on the hot side of described a plurality of magnetic heat exchange units; And cold heat exchanger components, this cold heat exchanger components is arranged on the cold side of described a plurality of magnetic heat exchange units, and wherein, described heat-transfer fluid is divided into first heat-transfer fluid that circulates and second heat-transfer fluid that circulates in described cold heat exchanger components in described hot heat exchanger components.
According to described magnetic refrigerator, be divided into hot side and cold side with simplified structure, realize high thermal efficiency and can control the amount of heat-transfer fluid.
Preferably, described hot heat exchanger components comprises: heat exchanger; Be used for described first heat-transfer fluid in the cold side exit of described heat exchanger is moved to first conduit of the described hot side of described a plurality of mangneto heat exchange units; And second conduit that is used for described first heat-transfer fluid is moved to the hot side entrance of described heat exchanger, wherein, described first heat-transfer fluid absorbs the heat of wanting heated described magnetocaloric material, and described cold heat exchanger components comprises: cold heat exchanger; Be used for described second heat-transfer fluid at the hot side outlet place of described cold heat exchanger is moved to the 3rd conduit of the described cold side of described a plurality of mangneto heat exchange units; And the 4th conduit that is used for described second heat-transfer fluid is moved to the cold side inlet of described cold heat exchanger, wherein, described second heat-transfer fluid is to the described magnetocaloric material radiant heat that will be cooled.
Magnetic refrigerator according to claim 1, wherein, described a plurality of mangneto heat exchange unit comprises: is installed in mounting shell in the installing hole that passes described swivel plate setting, is arranged on the mesh portion at the place, both ends of described mounting shell, and the described magnetocaloric material that between described mesh portion and described mounting shell, holds.
In addition, preferably, described a plurality of mangneto heat exchange unit comprises: be installed in setting by the mounting shell in the installing hole of described swivel plate, be arranged on the mesh portion at the both ends place of described mounting shell and the described magnetocaloric material that between described mesh portion and described mounting shell, holds.
And preferably, each the mangneto heat exchange unit in described a plurality of mangneto heat exchange units all comprises: housing, and described housing comprises upper shell and lower house; And being sealed in described magnetocaloric material in the described housing, described magnetocaloric material changes its temperature when applying described magnetic field.
In addition, described housing is included in the groove of its side-walls, with the contact length of increase with described heat-transfer fluid.
And, described groove from the top of described upper shell to the lower tilt of described lower house, to increase the contact length with described heat-transfer fluid.
In addition, described housing comprises the aluminium with good heat transfer characteristic and processing characteristics.
And preferably, described upper shell and described lower house seal by brazing.
In addition, described housing also comprises the through hole that is used for transmitting therein described heat-transfer fluid, to increase the amount through its described heat-transfer fluid.
When each the magnetocaloric material spare in described a plurality of magnetocaloric material spares all has the shape of the shape of plate or bar, the abundant contact of heat-transfer fluid and mobile stably is provided, described plate is arranged to have betwixt the gap, and described bar longitudinally has the constant circular tee section.
Preferably, described housing is installed from the outstanding mode of the lower surface of described swivel plate by described housing, and at the place, both sides of outstanding described housing described magnet is set.
Preferably, the top of described housing has funnel shaped, and is provided with the supporting slice of each the magnetocaloric material spare that is used for supporting described a plurality of magnetocaloric material spares at described lower part of frame place.
Preferably, described housing comprises the groove in its side-walls longitudinally, with the contact area of increase with described heat-transfer fluid, thus, improves heat exchange efficiency.
Preferably, described magnetocaloric material comprises gadolinium.
A kind of magnetic refrigerator also is provided, it comprises: first swivel plate, this first swivel plate has a plurality of first magnetic heat exchange units that are provided with along its periphery, and each the first magnetic heat exchange unit in described a plurality of first magnetic heat exchange units all comprises first magnetocaloric material that first heat transfer stream cognition is flowed through; First magnet, this first magnet are arranged between the lower surface of the upper surface of described first swivel plate and described first swivel plate, described first magnet described a plurality of first magnetic heat exchange units by the time apply magnetic field to increase the temperature of described first magnetocaloric material; Hot heat exchanger components, this hot heat exchanger components are arranged on the hot side place of described a plurality of first magnetic heat exchange units; Second swivel plate, this second swivel plate have a plurality of second magnetic heat exchange units that are provided with along its periphery, and each the second magnetic heat exchange unit in described a plurality of second magnetic heat exchange units all comprises second magnetocaloric material that second heat transfer stream cognition is flowed through; Second magnet, this second magnet are arranged between the lower surface of the upper surface of described second swivel plate and described second swivel plate, described second magnet described a plurality of second magnetic heat exchange units by the time apply described magnetic field to increase the temperature of second magnetocaloric material; Cold heat exchanger components, this cold heat exchanger components is arranged on the cold side place of described a plurality of first magnetic heat exchange units; And the middle flow parts, these middle flow parts are used to guide the intermediate heat transfer that circulates between the hot side of the cold side of described a plurality of first magnetic heat exchange units and described a plurality of second magnetic heat exchange units.
The effect that has superiority
According to described refrigerator,, hot side and cold side have been divided into for the amount of simplified structure, high thermal efficiency and control heat-transfer fluid and the temperature range of increase heat-transfer fluid.
Description of drawings
Fig. 1 is the plane of the heat-transfer fluid in the conventional rotary magnet magnetic refrigerator of illustration.
Fig. 2 is the plane of the magnetic heat exchange unit that comprises magnetocaloric material of exemplary view 1.
Fig. 3 is the stereogram of illustration assembly of the magnetic refrigerator of first preferred implementation according to the present invention.
Fig. 4 is the front view of Fig. 3.
Fig. 5 is the sectional view of the routine magnetic heat exchange unit of first alternative of illustration first preferred implementation according to the present invention.
Fig. 6 is the stereogram of the routine magnetic heat exchange unit of second alternative of illustration first preferred implementation according to the present invention.
Fig. 7 is the cross-sectional view of Fig. 6.
Fig. 8 is the stereogram of the situation of Fig. 6 of decomposing of illustration.
Fig. 9 is the horizontal view along Fig. 6 of A direction intercepting that is used for schematically describing groove.
Figure 10 is the horizontal view along Fig. 6 of A direction intercepting that is used for schematically describing other groove.
Figure 11 is the stereogram of illustration assembly of the magnetic refrigerator of second preferred implementation according to the present invention.
Figure 12 is the front view of Figure 11.
Figure 13 is the stereogram of the routine magnetic heat exchange unit of first alternative of illustration second preferred implementation according to the present invention.
Figure 14 is the sectional view along the B-B line intercepting of Figure 13.
Figure 15 to 17 is sectional views that the B-B line along Figure 13 of the second alternative example intercepts.
Figure 18 is the stereogram that illustration has the mangneto backing of rod-shape.
Figure 19 is the front view of illustration magnetic refrigerator of the 3rd preferred implementation according to the present invention.
[label declaration]
60,160,161: pump
62,162: heat exchanger
63,163: cold heat exchanger
13: the magnetic heat exchange unit
17aa, 17ab: first heat-transfer fluid
17bb, 17bc: second heat-transfer fluid
112,212,1312,412a, 412b: magnetocaloric material spare (Gd)
113,213,1113,1213,1313,1413: the magnetic heat exchange unit
113a: the hot side of magnetic heat exchange unit
113b: the cold side of magnetic heat exchange unit
115: mounting shell
116,117: mesh portion
130,131,132,133: conduit
140,1140: magnet
144: motor
148: axle
215: housing
217,219: groove
221: through hole
1114,1214,1314,1414: the gap
1115: housing
1115a: pars infundibularis
1115b: supporting slice
The specific embodiment
Below, with reference to accompanying drawing, above-mentioned purpose and other purpose and the features and advantages of the present invention are elaborated.
First embodiment
Fig. 3 is the stereogram of illustration assembly of the magnetic refrigerator of first preferred implementation according to the present invention, and Fig. 4 is the front view of Fig. 3.
As shown in Figure 3 and Figure 4, the magnetic refrigerator of first preferred implementation comprises according to the present invention: a plurality of magnetic heat exchange units 113; Swivel plate 118, this swivel plate 118 have a plurality of magnetic heat exchange units 113 that are provided with along its periphery, and these 113 of a plurality of magnetic heat exchange units have preset distance; Magnet 140, this magnet 140 is arranged between the swivel plate 118, wherein, magnet 140 these a plurality of magnetic heat exchange units 113 by the time apply magnetic field to increase temperature; Hot heat exchanger components, this hot heat exchanger components is arranged on the hot side 113a of these a plurality of magnetic heat exchange units 113; And cold heat exchanger components, this cold heat exchanger components is arranged on the cold side 113b of these a plurality of magnetic heat exchange units 113.
Heat-transfer fluid is divided into first heat-transfer fluid 17a that circulates and the second heat-transfer fluid 17b that circulates in cold heat exchanger components in hot heat exchanger components, to form circulation.
Promptly, hot heat exchanger components comprises: heat exchanger 162, be used for the described first heat-transfer fluid 17aa with the cold side exit of heat exchanger 162 and move to first conduit 130 of hot side 113a of these a plurality of magnetic heat exchange units 113 and second conduit 131 that is used for the first heat-transfer fluid 17ab is moved to the hot side entrance of heat exchanger 162, wherein, the first heat-transfer fluid 17a absorbs the heat of wanting heated magnetocaloric material 112.
Similarly be, cold heat exchanger components comprises: cold heat exchanger 163, be used for the second heat-transfer fluid 17bb with the hot side outlet place of cold heat exchanger 163 and move to the 3rd conduit 132 of cold side 113b of these a plurality of magnetic heat exchange units 113 and the 4th conduit 133 that is used for the second heat-transfer fluid 17bc is moved to the cold side inlet of cold heat exchanger 163, wherein, the second heat-transfer fluid 17bc is to magnetocaloric material 112 radiant heat that will be cooled.
These a plurality of magnetic heat exchange units 113 comprise the magnetocaloric material 112 by the heat-transfer fluid that flows.Magnetocaloric material 112 has the characteristic that its temperature changes when applying magnetic field.Magnetocaloric material 112 comprises the gadolinium (Gd) of fine powder type.For the heat-transfer fluid that flows, gadolinium has the pore of high osmosis, and absorbs well and the heat of emission.
That is, swivel plate 118 comprises the installing hole of boring a hole along its periphery, and a plurality of magnetic heat exchange units 113 are installed in these installing holes, as shown in Figure 5.
These a plurality of magnetic heat exchange units 113 comprise: be installed in mounting shell 115 in the installing hole, be installed in the place, two ends of mounting shell 115 mesh portion 116 and 117, between mesh portion 116 and 117, be contained in the magnetocaloric material 112 in the mounting shell 115.Therefore, this structure is easy to install a plurality of magnetic heat exchange units 113 on swivel plate 118.
On the other hand, to shown in Figure 8, preferably, magnetic heat exchange unit 213 comprises as Fig. 6: be installed in the housing 215 in the installing hole of swivel plate 118 and be sealed in magnetocaloric material 212 in the housing 215.Housing 215 comprises and being assembled together so that carry out the lower house 215a and the upper shell 215b of heat exchange under the situation about directly not contacting between magnetocaloric material 212 and heat-transfer fluid.Therefore, the oxidation and the loss of magnetocaloric material 212 have been prevented.
Preferably, housing 215 comprises the aluminium with good heat-transfer character and processing characteristics.
In addition, preferably, upper shell 15b and lower house 215a seal by brazing, so that improve leakage efficiency.
And housing 215 comprises a plurality of grooves 217 that have preset distance therebetween in its side-walls, with the contact area of increase with heat-transfer fluid, thus, increases heat transfer efficiency.
Preferably, each groove 217 is tilted, so that the contact length of increase and heat-transfer fluid.
As shown in Figure 9, the mode that increases to the bottom from top by the width of each groove 217 tilts each groove 217, perhaps as shown in figure 10, groove 219 itself is tilted, to improve heat exchange efficiency.
In addition, as shown in Figure 6, housing 215 comprises the through hole 221 that is used to transmit through its heat-transfer fluid, to improve heat exchange efficiency.
Below, characteristic in conjunction with magnetocaloric material, circulation according to magnetic refrigerator of the present invention is described, wherein, the temperature of magnetocaloric material raises 3 ℃ when this magnetocaloric material is magnetized, and by transfer fluid cools the time, reduce by 3 ℃, test the characteristic of magnetocaloric material with the atmospheric temperature of carrying out heat exchange by setting and heat exchanger 162, and will correspondingly be arranged on 26 ℃ with the atmospheric temperature that cold heat exchanger 163 is carried out heat exchange.
As shown in Figure 3 and Figure 4, swivel plate 118 is by motor 144 rotations, and a plurality of magnetic heat exchange unit 113 is sequentially by magnet 140, heat exchanger 162 and cold heat exchanger 163.
Magnetic heat exchange unit 113 by magnet 140 is heated to 29 ℃ because of the magnetocaloric effect of magnetocaloric material 112, follow a plurality of magnetic heat exchange units 113 and be cooled to 26 ℃, and the first heat-transfer fluid 17ab is heated to 29 ℃ simultaneously by the first heat-transfer fluid 17aa of first conduit 130 of 112 processes of magnetocaloric material.The first heat-transfer fluid 17ab after the heating via second conduit 131 through heat exchangers 162 heat radiations, and be cooled to 26 ℃ the first heat-transfer fluid 17aa via first conduit 130 through a plurality of magnetic heat exchange units 113.Repeat above-mentioned circulation.
When moving to cold heat exchanger, transmit the drop of temperature to 23 ℃ of the magnetocaloric material of heat to heat-transfer fluid.23 ℃ cold side 113b returns to 26 ℃ through the second heat-transfer fluid 17bb (26 ℃) of the 3rd conduit 132 with its temperature, the drop of temperature to 23 of second heat-transfer fluid simultaneously ℃.Through cold heat exchanger 163, with emission cold air (23 ℃), the second heat-transfer fluid 17bb that is heated to 26 ℃ is via a plurality of magnetic heat exchange units 113 of the 3rd conduit 132 processes via the 4th conduit 133 for the second heat-transfer fluid 17bc of cooling.Repeat above-mentioned circulation.
As mentioned above, the heat-transfer fluid of circulation is divided into heat exchanger and cold heat exchanger so that have two circulations, and magnetocaloric material 112 is installed in the swivel plate 118 that will rotate between heat exchanger that is used for heat exchange and cold heat exchanger, thus, has simplified the structure of magnetic cooling circulation.
In addition, according to this system, because under atmospheric temperature, heat-transfer fluid is injected into magnetocaloric material, so according to the state of this material heating and cooling heat-transfer fluid more, to improve heat exchanger efficiency.
And, because magnetic refrigerator is divided into heat exchanger and cold heat exchanger 163, so first heat-transfer fluid is differently controlled with the amount of the second heat-transfer fluid 17bb.Therefore, more substantial first heat-transfer fluid can flow to the hot side of magnetic heat exchange unit, so that maximization cooling magnetocaloric material.
Second embodiment
Though the magnetic refrigerator according to the magnetic refrigerator of the Figure 11 and second embodiment shown in Figure 12 and first embodiment is similar, magnet 1140 is arranged on two lower surface places of magnetic heat exchange unit 1113 because of the difference on the mounting structure of magnetic heat exchange unit.
The first alternative example: magnetic heat exchange unit 1113
As Figure 13 and shown in Figure 14, comprise vertically extending housing 1115 and be arranged on a plurality of magnetocaloric material spares 1112 in this housing 1115 according to the magnetic heat exchange unit 1113 of the first alternative example of second embodiment, and form gap 1114.
The top of housing 1115 has funnel shaped, is provided with the supporting slice 1115b of a plurality of magnetocaloric material spares 1112 of supporting at the place, bottom of housing 1115.
Having funnel shaped upper shell 1115a carries out the guiding heat-transfer fluid and enters the function in the housing and hang the function that supports itself by the installing hole from swivel plate 118.
In addition, shown in Figure 11 and 12, preferably, housing 1115 is by installing from the outstanding mode of the lower surface of swivel plate 118.
Have and prevent by gap 1114 that the mode that contacts with housing is parallel by a plurality of magnetocaloric material spares 1112 of the shape of the plate of gadolinium powder manufacturing and be provided with.According to the flow velocity and the heat transfer rate of heat-transfer fluid, a plurality of magnetocaloric material spares 1112 with plate shape can be feed thin foil strips or thick paillon foil.
As mentioned above, even do not use mesh portion, a plurality of template magnetocaloric material spares 1112 with gap 1114 also prevent spillage of material, because heat-transfer fluid flows through gap 1114, so contact with whole a plurality of magnetocaloric material spares 1112 and flow steadily, and because contact area is bigger under the situation of template, so obtain the heat transfer rate higher than routine techniques.
The second alternative example: magnetic heat exchange unit 1213
As shown in figure 15, select routine magnetic heat exchange unit 1113 else according to second of second embodiment and comprise a plurality of magnetocaloric material spares 1212, but not have a plurality of magnetocaloric material spares 1112 of plate shape with rod-shape.That is, each in a plurality of magnetocaloric material spares 1212 all longitudinally has the rod-shape of constant circular tee section.
Even having a plurality of magnetocaloric material spares 1212 of rod-shape is random alignment, because of circular cross-section contacts or does not contact, also can form the gap 1214 between a plurality of magnetocaloric material spares 1212, thereby when heat-transfer fluid flows through gap 1214, obtain the effect of first embodiment.
Preferably, arranged vertical ground has a plurality of magnetocaloric material spares 1212 of rod-shape by batch insertion.
On the other hand, as shown in figure 18, preferably, a plurality of magnetocaloric material spares 1212 with rod-shape comprise groove 1212a longitudinally, to increase the contact area with heat-transfer fluid, thus, improve heat exchange efficiency.
The 3rd alternative example: magnetic heat exchange unit 1313
As shown in figure 16, the routine magnetic heat exchange unit 1213 of the 3rd alternative according to second embodiment comprises a plurality of magnetocaloric material spares 1312 with rod-shape, described a plurality of magnetocaloric material spare 1312 replaces the random alignment of a plurality of magnetocaloric material spares 1212 with rod-shape of the second alternative example by arranging with the 1112 similar modes of a plurality of magnetocaloric material spares with plate shape of the first alternative example.
Preferably, arranged vertical ground has a plurality of magnetocaloric material spares 1312 of rod-shape by batch insertion.
As shown in figure 18, preferably, a plurality of magnetocaloric material spares 1312 with rod-shape comprise groove 1212a longitudinally.
The 4th alternative example: magnetic heat exchange unit 1413
As shown in figure 17, magnetic heat exchange unit 1413 comprises a plurality of magnetocaloric material spare 1412a, and a plurality of magnetocaloric material spares 1412 with plate shape, and described a plurality of magnetocaloric material spares 1412 are aligned to has gap 1414 therebetween.
That is, swivel plate 118 comprises along the installing hole of its periphery perforation, and Figure 14 is installed to magnetic heat exchange unit 1113,1213,1313 or 1413 shown in Figure 17 in this installing hole.
The 3rd embodiment
As shown in figure 19, specifically implemented the two-stage circulation, to increase the temperature range of heat-transfer fluid.
That is, the magnetic refrigerator of Figure 19 comprises: first swivel plate and second swivel plate, magnet, heat exchanger, cold heat exchanger and the magnetic heat exchange unit that holds heat-transfer fluid mounted thereto with motor.First swivel plate and second swivel plate are rotated simultaneously by motor, and thus, the first magnetic heat exchange unit and the second magnetic heat exchange unit are sequentially by magnet, hot side and cold side.
According to first swivel plate, the first magnetic heat exchange unit by first magnet is heated because of the magnetocaloric effect of heat-transfer fluid, and then first heat-transfer fluid cools off this heat by magnetocaloric material, and heats this first heat-transfer fluid simultaneously.
First heat-transfer fluid of heating is through heat exchanger and the heat of emission and then through the first magnetic heat exchange unit.Repeat above-mentioned circulation.
When the magnetocaloric material that has transmitted heat (cooling for the first time) when first heat-transfer fluid of thermotropism side regains transmitted hot by the intermediate cold heat-transfer fluid, the drop of temperature to 23 of intermediate heat transfer ℃.
The intermediate heat transfer that is cooled by cooling for the second time is by the magnetization of second magnet of second swivel plate, and the then magnetocaloric material (cooling for the third time) by being heated to 29 ℃ temperature being back to its initial temperature, and is back to cooling for the second time.Repeat above-mentioned circulation.
In cooling for the third time, with intermediate heat transfer cooling magnetocaloric material with temperature lower than the temperature of cooling for the first time and cooling for the second time, so that the temperature of magnetocaloric material is landed more, and enter cold heat exchanger under 20 ℃ of temperature, 20 ℃ temperature is pass through the optimized chilling temperature that cools off for the 4th time for reducing atmospheric temperature.
Promptly, when atmospheric temperature is 26 ℃, the temperature of magnetocaloric material is heated to 29 ℃ by first magnet of first swivel plate (upper plate), in cooling for the first time, when magnetocaloric material will be cooled off with heat radiation under atmospheric temperature and by the first heat-transfer fluid 17aa first magnetic heat exchange unit, that have 26 ℃ temperature through heat exchanger, magnetocaloric material is cooled to 23 ℃, and the first heat-transfer fluid 17ab is promoted to 29 ℃.Repeat above-mentioned circulation.
When the intermediate heat transfer with atmospheric temperature of 26 ℃ runs into will be in cooling for the second time during 23 ℃ of cooling magnetocaloric material, this magnetocaloric material is back to the initial temperature of atmospheric temperature, and the drop of temperature to 23 of intermediate heat transfer ℃.
When 23 ℃ intermediate heat transfer in cooling for the third time by second swivel plate (lower plate) magnetization during with the magnetocaloric material (29 ℃) of cooling heating, this intermediate heat transfer is back to 26 ℃ initial temperature, so that be back to cooling for the second time.Repeat above-mentioned circulation.
Magnetocaloric material by the cooling of 23 ℃ intermediate heat transfer, causes its drop of temperature to 23 ℃ in cooling for the third time.Magnetocaloric material enters in the cold heat exchanger under 20 ℃ chilling temperature by the 4th cooling, to keep 20 ℃ atmospheric temperature.
Because the middle flow parts make cooler can increase (being cooled to four coolings from twice), the variations in temperature of intermediate heat transfer is expanded, and these middle flow parts are used to guide the intermediate heat transfer that circulates between the hot side of the cold side of a plurality of first magnetic heat exchange units and a plurality of second magnetic heat exchange units.
Magnetic refrigerator of the present invention is not limited to above-mentioned embodiment, it will be appreciated by those skilled in the art that, under the situation that does not break away from the spirit and scope of the present invention, can realize various changes in form and details.For example,, it will be appreciated by those skilled in the art that magnet 140 or 1140 can specifically be implemented with electromagnet though magnet 140 or 1140 is described as the permanent magnet that faces with each other.
Commercial Application
As mentioned above, magnetic refrigerator according to the present invention provides following advantages.
The heat-transfer fluid of circulation is assigned to heat exchanger and cold heat exchanger, having two circulations, and And magnetocaloric material is installed in and will rotates between the heat exchanger that is used for heat exchange and cold heat exchanger On the circular rotating plate, thus, simplify the structure of magnetic cooling circulation.
In addition, according to this system, because under atmospheric temperature, heat-transfer fluid is injected magnetocaloric material, So according to the state of this material heating and cooling heat-transfer fluid more, thereby improved heat exchanger Efficient.
And, because magnetic refrigerator is divided into heat exchanger and cold heat exchanger 163, so first biography Hot fluid and the amount of the second heat-transfer fluid 17bb be controlled make different. Therefore, more substantial first pass Hot fluid can flow to the hot side of magnetic heat exchange unit, to cool off substantially magnetocaloric material.
In addition, with magnetocaloric material be sealed in the housing with the heat-transfer fluid mediate contact so that can Prevent the loss that causes because of the flowing heat transfer fluid, and prevented from oxidation from making for semipermanent With.
And, form groove in the side-walls of housing, to increase and the contacting of mobile heat-transfer fluid Area thus, improves heat exchange efficiency.
In addition, groove is tilted, to increase contact length, thus, improve more heat exchange efficiency.
Because housing comprises aluminium, so good heat-transfer character and processing characteristics are provided.
The magnetic heat exchange unit is constituted as and comprises vertically extending housing and be arranged on being formed with in the housing A plurality of magnetocaloric material spares in gap, so that heat-transfer fluid can flow through this gap, thus, by Even contact between a plurality of magnetocaloric material spares and the heat-transfer fluid improves heat exchange efficiency, and disappears Except the needs to the mesh section that is used for making the heat-transfer fluid smooth flow.
In addition, when when longitudinally having a plurality of magnetocaloric material spares formation groove of rod-shape, Improve heat exchange efficiency by increasing with the contact area of heat-transfer fluid.
And a plurality of magnetocaloric material spares have plate shape or rod-shape, so that a plurality of magnetocaloric material Not loss of part.
In addition, specific implementation two stage cycle, from twice cooling become four times the cooling and increased cold But chance has increased the temperature range of heat-transfer fluid, thus, has increased the hot field of mangneto or magnetic and has changed The range of application of thermic cooler.
Claims (16)
1, a kind of magnetic refrigerator, this magnetic refrigerator comprises:
A plurality of magnetic heat exchange units, described a plurality of magnetic heat exchange units comprise the fail to be convened for lack of a quorum magnetocaloric material of process of heat-transfer fluid;
Swivel plate is provided with described a plurality of magnetic heat exchange unit along this swivel plate periphery, has preset distance between described a plurality of magnetic heat exchange units;
Magnet, this magnet are arranged between the lower surface of the upper surface of described swivel plate and described swivel plate, described magnet described a plurality of magnetic heat exchange units by the time apply magnetic field to increase temperature;
Hot heat exchanger components, this hot heat exchanger components is arranged on the hot side of described a plurality of magnetic heat exchange units; And
Cold heat exchanger components, this cold heat exchanger components is arranged on the cold side of described a plurality of magnetic heat exchange units,
Wherein, described heat-transfer fluid is divided into first heat-transfer fluid that circulates and second heat-transfer fluid that circulates in described cold heat exchanger components in described hot heat exchanger components.
2, magnetic refrigerator according to claim 1, wherein, described hot heat exchanger components comprises: heat exchanger; Be used for described first heat-transfer fluid in the cold side exit of described heat exchanger is moved to first conduit of the described hot side of described a plurality of magnetic heat exchange units; And second conduit that is used for described first heat-transfer fluid is moved to the hot side entrance of described heat exchanger, wherein, described first heat-transfer fluid absorbs the heat of wanting heated described magnetocaloric material, and
Described cold heat exchanger components comprises: cold heat exchanger; Be used for described second heat-transfer fluid at the hot side outlet place of described cold heat exchanger is moved to the 3rd conduit of the described cold side of described a plurality of magnetic heat exchange units; And the 4th conduit that is used for described second heat-transfer fluid is moved to the cold side inlet of described cold heat exchanger, wherein, described second heat-transfer fluid is to the described magnetocaloric material radiant heat that will be cooled.
3, magnetic refrigerator according to claim 1, wherein, described a plurality of magnetic heat exchange units comprise: be installed in the mounting shell in the installing hole that passes described swivel plate setting; Be arranged on the mesh portion at the place, both ends of described mounting shell; And the described magnetocaloric material that between described mesh portion and described mounting shell, holds.
4, magnetic refrigerator according to claim 1, wherein, each the magnetic heat exchange unit in described a plurality of magnetic heat exchange units all comprises: housing, described housing comprises upper shell and lower house; And being sealed in described magnetocaloric material in the described housing, described magnetocaloric material changes its temperature when being applied in described magnetic field.
5, magnetic refrigerator according to claim 4, wherein, described housing is included in the groove of its side-walls.
6, magnetic refrigerator according to claim 5, wherein, described groove from the top of described upper shell to the lower tilt of described lower house.
7, according to each the described magnetic refrigerator in the claim 4 to 6, wherein, described housing comprises aluminium.
8, magnetic refrigerator according to claim 7, wherein, described upper shell and described lower house seal by brazing.
9, magnetic refrigerator according to claim 8, wherein, described housing also comprises the through hole that is used for therefrom transmitting described heat-transfer fluid.
10, magnetic refrigerator according to claim 1, wherein, described magnetic heat exchange unit comprises the housing that vertically passes it, and in described housing, a plurality of magnetocaloric material spares are arranged to separate, make between each magnetocaloric material spare in described a plurality of magnetocaloric material spare and described housing to have preset distance.
11, magnetic refrigerator according to claim 10, wherein, described housing is installed from the outstanding mode of the lower surface of described swivel plate by described housing, and at the place, both sides of outstanding described housing described magnet is set.
12, magnetic refrigerator according to claim 11, wherein, the top of described housing has funnel shaped, and is provided with the supporting slice of each the magnetocaloric material spare that is used for supporting described a plurality of magnetocaloric material spares at described lower part of frame place.
13, magnetic refrigerator according to claim 12, wherein, described a plurality of magnetocaloric material spares are provided with by the discontiguous each other mode of described a plurality of magnetocaloric material spares.
14, magnetic refrigerator according to claim 12, wherein, each the magnetocaloric material spare in described a plurality of magnetocaloric material spares all has rod-shape, and described bar longitudinally has the constant circular tee section.
15, according to each the described magnetic refrigerator in the claim 3,4 and 10, wherein, described magnetocaloric material comprises gadolinium.
16, a kind of magnetic refrigerator, this magnetic refrigerator comprises:
First swivel plate, this first swivel plate have a plurality of first magnetic heat exchange units that are provided with along its periphery, and each the first magnetic heat exchange unit in described a plurality of first magnetic heat exchange units all comprises first magnetocaloric material of first heat transfer stream cognition process;
First magnet, this first magnet are arranged between the lower surface of the upper surface of described first swivel plate and described first swivel plate, described first magnet described a plurality of first magnetic heat exchange units by the time apply magnetic field to increase the temperature of described first magnetocaloric material;
Hot heat exchanger components, this hot heat exchanger components are arranged on the hot side place of described a plurality of first magnetic heat exchange units;
Second swivel plate, this second swivel plate have a plurality of second magnetic heat exchange units that are provided with along its periphery, and each the second magnetic heat exchange unit in described a plurality of second magnetic heat exchange units all comprises second magnetocaloric material of second heat transfer stream cognition process;
Second magnet, this second magnet are arranged between the lower surface of the upper surface of described second swivel plate and described second swivel plate, described second magnet described a plurality of second magnetic heat exchange units by the time apply described magnetic field to increase the temperature of second magnetocaloric material;
Cold heat exchanger components, this cold heat exchanger components is arranged on the cold side place of described a plurality of first magnetic heat exchange units; And
Middle flow parts, these middle flow parts are used to guide the intermediate heat transfer that circulates between the hot side of the cold side of described a plurality of first magnetic heat exchange units and described a plurality of second magnetic heat exchange units.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2005-0107308 | 2005-11-10 | ||
| KR1020050107306A KR100647852B1 (en) | 2005-11-10 | 2005-11-10 | Magnetic refrigerator |
| KR1020050107308A KR100728495B1 (en) | 2005-11-10 | 2005-11-10 | magnetic heat-exchanging unit and magnetic refrigerator with the magnetic heat-exchanging unit |
| KR10-2005-0107305 | 2005-11-10 | ||
| KR1020050107305A KR100647854B1 (en) | 2005-11-10 | 2005-11-10 | Magnetic refrigerator |
| KR10-2005-0107306 | 2005-11-10 | ||
| KR1020050126983A KR100768006B1 (en) | 2005-12-21 | 2005-12-21 | magnetic heat-exchanging unit and magnetic refrigerator with the magnetic heat-exchanging unit |
| KR10-2005-0126983 | 2005-12-21 | ||
| PCT/KR2006/004653 WO2007055506A1 (en) | 2005-11-10 | 2006-11-09 | Magnetic refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101305250A true CN101305250A (en) | 2008-11-12 |
| CN101305250B CN101305250B (en) | 2010-06-02 |
Family
ID=37712966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800419894A Expired - Fee Related CN101305250B (en) | 2005-11-10 | 2006-11-09 | Magnetic refrigerator |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100647854B1 (en) |
| CN (1) | CN101305250B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788207B (en) * | 2009-12-29 | 2011-09-21 | 华南理工大学 | Microchannel enhanced heat exchange system of rotary room-temperature magnetic refrigerator and heat transfer method thereof |
| CN102317710A (en) * | 2009-02-17 | 2012-01-11 | 制冷技术应用股份有限公司 | Magnetocaloric heat generator |
| CN103148633A (en) * | 2011-12-07 | 2013-06-12 | 南京大学 | Room-temperature ferroelectric refrigerator based on AFR (active ferroelectric regenerator) |
| CN108679874A (en) * | 2018-04-10 | 2018-10-19 | 中科磁凌（北京）科技有限公司 | Cascade room temperature magnetic refrigeration system |
| CN115288827A (en) * | 2022-08-01 | 2022-11-04 | 湖南万鼎智能科技有限公司 | Double-acting negative pressure self-purification heat dissipation, noise reduction and smoke removal equipment for diesel generating set |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101866840B1 (en) * | 2012-03-26 | 2018-06-14 | 삼성전자주식회사 | Magnetic cooling apparatus |
| KR101961122B1 (en) * | 2017-07-04 | 2019-03-25 | 신승현 | Cooling apparatus for using a magneto caloric effect cooling fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2517415A1 (en) * | 1981-11-27 | 1983-06-03 | Commissariat Energie Atomique | METHOD FOR REFRIGERATING OR HEAT PUMPING AND DEVICE FOR CARRYING OUT SAID METHOD |
| US4408463A (en) | 1982-01-20 | 1983-10-11 | Barclay John A | Wheel-type magnetic refrigerator |
| US5091361A (en) | 1990-07-03 | 1992-02-25 | Hed Aharon Z | Magnetic heat pumps using the inverse magnetocaloric effect |
| KR100797681B1 (en) * | 2000-08-09 | 2008-01-23 | 애스트로노틱스 코포레이션 오브 아메리카 | Rotating bed magnetic refrigeration apparatus |
| CN1151298C (en) * | 2001-07-12 | 2004-05-26 | 四川大学 | Magnetic rare earth-gadolinium refrigerating alloy |
| CN1161442C (en) * | 2002-07-01 | 2004-08-11 | 南京大学 | Ferromagnetism room-temp. magnetic refrigerating material and its preparation method |
| KR100590974B1 (en) * | 2003-11-18 | 2006-06-19 | 현대자동차주식회사 | Aircon system using magnetocaloric effect |
-
2005
- 2005-11-10 KR KR1020050107305A patent/KR100647854B1/en not_active IP Right Cessation
-
2006
- 2006-11-09 CN CN2006800419894A patent/CN101305250B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317710A (en) * | 2009-02-17 | 2012-01-11 | 制冷技术应用股份有限公司 | Magnetocaloric heat generator |
| CN102317710B (en) * | 2009-02-17 | 2013-07-31 | 制冷技术应用股份有限公司 | Magnetocaloric heat generator |
| CN101788207B (en) * | 2009-12-29 | 2011-09-21 | 华南理工大学 | Microchannel enhanced heat exchange system of rotary room-temperature magnetic refrigerator and heat transfer method thereof |
| CN103148633A (en) * | 2011-12-07 | 2013-06-12 | 南京大学 | Room-temperature ferroelectric refrigerator based on AFR (active ferroelectric regenerator) |
| CN103148633B (en) * | 2011-12-07 | 2015-07-08 | 南京大学 | Room-temperature ferroelectric refrigerator based on AFR (active ferroelectric regenerator) |
| CN108679874A (en) * | 2018-04-10 | 2018-10-19 | 中科磁凌（北京）科技有限公司 | Cascade room temperature magnetic refrigeration system |
| CN115288827A (en) * | 2022-08-01 | 2022-11-04 | 湖南万鼎智能科技有限公司 | Double-acting negative pressure self-purification heat dissipation, noise reduction and smoke removal equipment for diesel generating set |
| CN115288827B (en) * | 2022-08-01 | 2024-01-30 | 湖南万鼎智能科技有限公司 | Double-acting negative pressure self-purification diesel generator set heat dissipation, noise reduction and smoke removal equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101305250B (en) | 2010-06-02 |
| KR100647854B1 (en) | 2006-11-23 |
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