CN100368742C - Natural convection heat transfer type room-temperature magnetic Refrigerator - Google Patents
Natural convection heat transfer type room-temperature magnetic Refrigerator Download PDFInfo
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- CN100368742C CN100368742C CNB2004100409221A CN200410040922A CN100368742C CN 100368742 C CN100368742 C CN 100368742C CN B2004100409221 A CNB2004100409221 A CN B2004100409221A CN 200410040922 A CN200410040922 A CN 200410040922A CN 100368742 C CN100368742 C CN 100368742C
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- working medium
- magnetic
- heat transfer
- fluid
- mozzle
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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
- F25B2321/0022—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a rotating or otherwise moving magnet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The present invention describes a natural convection heat transfer type room-temperature magnetic refrigerator which is characterized in that a gadolinium piece group is adopted as working substance and neodymium-iron-borax permanent magnet as a magnetizing field; the device adopts a gadolinium sheet group as working substance, and a neodymium-iron-borax permanent magnet is provided with a magnetizing field. A flaky working substance group is arranged in cold storage liquid to be fixed without moving, the magnet rotates, causing working substance gadolinium to have magnetization and demagnetization repeatedly to make use of the magnetocaloric effect refrigeration of the working substance. The refrigerator has the maximal characteristic that the present invention adopts natural convection heat transfer, the working substance and a shell body have no relative movement and no mechanical friction, and the present invention is helpful to improve the refrigeration efficiency. In addition, the natural convection heat transfer is intensified by the aid of a magnetic field, causing the refrigerator to have obvious advantages.
Description
One, technical field
The present invention relates to refrigeration technology field, particularly relate to the magnetic refrigeration technology field
Two, background technology
The application of magnetic refrigeration in the profound hypothermia scope has been the thing before seven more than ten years.Utilized the magnetic refrigeration effect as far back as 1933 (Phys.Rew.43:768,1933), obtained the following ultralow temperature of 1K, minimum temperature reaches 10
-8K.Yet at high temperature range, particularly in room temperature range, research, the development progress of magnetic Refrigeration Technique are slow.Until 1976 G.V.Brown (J.Appl.Phys.47:3673,1976) just done initiative work for room temperature magnetic refrigerating, prove the possibility of room temperature magnetic refrigerating first.The device of G.V.Brown is the device of Reciprocatory.After this, W.A.Steyert and J.A.Barclay (J.Appl.Phys, 47:8,1976) have proposed rotary-type room temperature magnetic refrigerating device.And can room temperature magnetic refrigerating reach practicability, then be to have brought hope (CEC 1987) to people by Lance.D.Kirol, " the rotation recuperation permanent magnetism heat pump " that he does, broken away from heavy electromagnet (containing superconducting magnet), adopt permanent magnet, when magnetizing field was 0.9T, the temperature that obtains 11K was striden, and at the heat transfer problem that has solved preferably on his device between solid magnetic working medium.
Yet what really make a breakthrough aspect room temperature magnetic refrigerating is the Ames Lab of the U.S. and work (Adv.Cryo.Eng.41:1759,1998 of aerospace company; U.S.Patent:5934078; U.S.Patent:6526759 B2; U.S.Patent:2003/0106323A1).Wherein a model machine has obtained 600 watts refrigeration work consumption, and temperature is striden and reached 35K, moves more than 18 months continuously.Japan also delivered information (APS2003) in succession in recent years, aspect the research of magnetic refrigeration, exploitation, had obtained the progress of advancing by leaps and bounds.Verified the superconducting magnet apparatus that the U.S. uses before this, and obtained temperature and stride 29K, 80 watts result.And make magnet with permanent magnet, and gadolinium is made working medium, and the temperature that obtains 40 watts of refrigerating capacitys and 20K is striden.This indicates that room-temperature magnetic refrigerator reaches practicability, enters huge numbers of families, has been the thing that is close at hand.
Although above many gratifying progress are arranged, really reach practicability, all be better than traditional compression refrigeration at one-time investment and operation and maintenance cost etc., also have many difficult tasks to want us to go to finish.In the aforementioned several means of mentioning, its outstanding feature is all arranged, but the improvements of needs are also arranged.For example, (CEC 1987 for the device that has; Adv.Cryo.Eng.41:1759,1998; U.S.Patent:5934078), have tangible mechanical friction at low-temperature space, this just causes refrigerating efficiency to reduce widely.The device working medium structure that has unreasonable (J.Appl.Phys.47:3673,1976), the distance between the working medium group gadolinium sheet guarantees that by filling woven wire the resistance of motion is very big like this, causes the mixing of cold-storage fluid, influences that temperature is striden, power etc.And the device that has (U.S.Patent:5934078; U.S.Patent:6526759B2; U.S.Patent:2003/0106323A1) structure and control system more complicated, manufacture difficulty strengthens.
Main feature of the present invention is: adopt heat transfer free convection, avoided the mechanical friction between magnetic working medium and housing, structure is very simple, it is reliable and stable to turn round, utilizing magnetic field-intensification heat transfer free convection, more given prominence to this characteristic feature of an invention, is brand-new magnetic refrigeration apparatus.
Three, summary of the invention
The present invention is brand-new magnetic refrigeration apparatus, and its schematic diagram as shown in Figure 1.Magnetic working medium is immersed in the cold-storage fluid, and is fixed together transfixion with the working medium box.When magnet system moves in a direction indicated by the arrow, when going to magnetic working medium place, make the magnetization of magnetic working medium, produce heat, magnetic working medium temperature raises simultaneously, with cold-storage fluid heat exchange around it, cold-storage fluid expanded by heating, density reduces, and produces buoyancy lift upwards, buoyancy lift forces the upward fluid of this portion of hot, leaves the working medium district; Fluid stream colder simultaneously replenishes, and forms the fluid shuttling movement.Fluid moves like this, with the working medium heat exchange, and promptly so-called freely-movable heat exchange (heat transfer free convection).In like manner, skim over magnetic working medium when magnet system rotates, during the demagnetization of magnetic working medium, the cooling of magnetic working medium absorbs heat from fluid, make fluid temperature reduction, and density increases, and causes this segment fluid flow to move downward, and leaves magnetic working medium district.Finally, working medium box top cold-storage fluid temperature (F.T.) raises gradually, and temperature of lower reduces gradually.Utilize hot end heat exchanger and cool end heat exchanger, heat (cold) amount can be taken out to beyond the device.
From as can be known above-mentioned, when magnetic working medium was magnetized, the heat that magnetothermal effect produces made upward fluid, leaves magnetic working medium district; During demagnetization, the cold of generation moves downward fluid, leaves magnetic working medium district equally.Its cyclic process, available following four processes are described: 1. magnetic working medium is at T
0Begin magnetization (magnet system goes to magnetic working medium district) under the temperature, instantaneous temperature rises to T
1(establishing room temperature is T
0), the adiabatic temperature of magnetothermal effect becomes Δ T, then T
1≈ (T
0+ Δ T).Magnetic working medium is to fluid heat release, upward fluid.2. magnetic working medium (equifield intensity) in magnetic field continues to the fluid heat release, and temperature is by T
1Reduce to T
2T
2≈T
0。3. magnet system is rotated further, and leaves magnetic working medium district, the demagnetization of magnetic working medium, and temperature drops to T
3, T
3≈ (T
0-Δ T), the heat of magnetic working medium absorption fluids reduces fluid temperature (F.T.), and the fluid of temperature low (density is big) moves downward, and leaves magnetic working medium district.4. magnetic working medium continues and the fluid heat exchange at low (under the null field) after the match, and temperature rises to T again
0, finish a circulation, then circulate next time.
In the above cyclic process, the problem of most critical is: the adiabatic temperature change Delta T that magnetothermal effect produces is wanted enough big (buoyancy lift that corresponding heated fluid is subjected to is also big), can make heated fluid in the time of waiting a process, move upward on the magnetic working medium district, leave magnetic working medium district; Otherwise refrigeration will differ from.This just requires the time long enough of the inswept working medium box of magnet system; The perhaps rotating speed of driving mechanism enough low (after adopting the magnetic field-intensification heat exchange certainly, just do not had this problem, be described in detail and see below).
From said process as can be seen, one of maximum characteristics of the present invention are: in the whole circulation process, magnetothermal effect is a leading factor, adopts heat transfer free convection, does not have relative motion and mechanical friction to take place between magnetic working medium and the housing, helps to raise the efficiency.
Two of characteristics of the present invention are: reliable, reliability depends on the reliability of driving mechanism basically.
Three of characteristics of the present invention are: can increase power with method in parallel easily.When rotating speed one timing, increase pair of magnets on the turning cylinder, power just doubles; Increasing magnetic working medium also is same reason.
Four of characteristics of the present invention are: utilize magnetic field-intensification heat transfer free convection dexterously, make the advantage of device more outstanding.
Invention also has characteristics: structure is very simple, and steady-state operation is without any need for by-pass valve control, controlling organization and control circuit.Processing like this, manufacturing also are very easy to.
Four, description of drawings
Fig. 1 is a principle schematic of the present invention
Fig. 2 is the magnetic refrigeration apparatus structural representation
Fig. 3 is device relevant magnet, driving mechanism, support schematic diagram
Fig. 4 is a working medium group structural representation
Fig. 5 is the schematic appearance of working medium box
Fig. 6 is a magnetic field-intensification heat-exchange working medium group schematic diagram
Five, the specific embodiment
Provide embodiment and the present invention is described in further detail below in conjunction with accompanying drawing.It is worthy of note that the embodiment that provides can not be interpreted as limiting the scope of the invention, nonessential improvement and adjustment that this area professional has done according to the foregoing invention content should belong to protection scope of the present invention.
Fig. 2 is the structural representation of this device.The working medium group that working medium sheet 3 (gadolinium sheet) is formed is for producing the magnetic working medium of magnetothermal effect, and it is screwed the middle part at working medium box 7.The working medium box is filled cold-storage fluid 6.Cold-storage fluid available water adds ethanol or pure water (when requiring cryogenic temperature to be higher than zero centigrade), that is to say that magnetic working medium is immersed in the cold-storage fluid 6.Upper and lower mozzle 2 and the following mozzle 5 laid respectively in magnetic working medium.The effect of mozzle mainly is to make cold fluid and hot fluid separately, strengthens the circulation of liquid.On the top of working medium box 7 hot end heat exchanger 1 is arranged, logical cooling water in the pipe can take out the heat in hot junction.There is cool end heat exchanger 8 working medium box 7 lower ends, and heat-exchanger circuit has circulating pump 13, can cryogen be delivered to cold spot (air-conditioning, refrigerator etc.) by pipeline.Magnetic working medium magnetization demagnetization produces the used magnet 4 usefulness neodymium-iron-boron of magnetothermal effect and makes.Neodymium-iron-boron magnetic patch and yoke 12 usefulness screws 10,11 are fixed in the rotating shaft 9 and (see the back for details).Rotating shaft 9 can drive with driving speed adjusting gear 15.More than these parts form heat transfer free convection formula room temperature magnetic refrigerating device jointly.
Driving speed adjusting gear 15 driving rotating shafts 9 rotates with direction shown in the arrow, when magnet 4 goes to magnetic working medium, magnetic working medium is magnetized, generates heat, the magnetic working medium (gadolinium sheet group) that temperature raises is carried out heat exchange with its cold-storage fluid 6 on every side, after fluid is heated, because density reduces, produce buoyancy lift upwards and move upward, leave magnetic working medium district, in last mozzle 2 moved upward inside, until top hot end heat exchanger 1.When hot fluid upwards moved in last mozzle 2, the fluid outside last mozzle 2 entered the working medium district downwards, formed the free convection circulation.By such circulation, the heat that when magnetization produces can be delivered to hot end heat exchanger 1 by magnetic working medium district, drain into environment (cooling water).
When rotating shaft 9 continues rotation, drive magnet 4 leaves magnetic working medium district, the cooling during demagnetization of magnetic working medium, the heat of cold-storage fluid 6 around absorbing increases cold-storage fluid temperature reduction, density, cause cold-storage fluid 6 move downwards in the mozzle 5 down, until cool end heat exchanger 8 places.
Along with the carrying out of process, upper temp raises gradually, and temperature of lower reduces gradually, and the temperature between the upper and lower part is striden and can be reached more than six times of the adiabatic temperature change of magnetothermal effect.When the bottom reaches desired low temperature, can start circulating pump 13, make the fluid circulation in the cool end heat exchanger 8, accept the refrigeration duty of cold junction.
For cold-storage fluid 6 can be circulated better, the fit dimension between upper and lower mozzle 2,5 and the working medium box 7 is very crucial.The length of mozzle will equal the length in space in the working medium box, and width is smaller than space in the working medium box, (length and width of working medium group is all smaller than space in the working medium box), could guarantee that like this hot fluid all rises in last mozzle 2, and cold fluid is downward in following mozzle 5, the fluid of mozzle outside is supplemented to magnetic working medium district by the side downward or upward simultaneously.
Cold and hot end heat exchanger 8 can be made with copper tube.The circulating pump employing has low discharge, high-lift screw pump or gear pump all can.
Used magnet 4 is neodymium-iron-boron permanent magnet (see figure 3)s.Magnet system is made of magnet 4 and yoke 12 two parts.Yoke 12 materials are soft iron DT4, and magnet material is neodymium-iron-boron, and magnet 4 is of a size of 70mm * 70mm * 30mm, by magnetic force with both suctions together, do not need other fixation between magnet 4 and the yoke 12.Yoke 12 usefulness hold-down screws 10 are fixed together with support arm 20, and support arm 20 is fixing with sleeve 21 by screw 11, and sleeve 21 usefulness screws 22 are fixed in the rotating shaft 9.Rotating shaft 9 links to each other with driving speed adjusting gear 15 by shaft coupling 23.
Drive speed adjusting gear 15 and all be placed on the support 24, it is fixing with support 24 to drive speed adjusting gear 15 usefulness screws 25.Two rolling bearings 26 that link to each other with rotating shaft 9 are placed in the bearing block 27 on the support.
Driving speed adjusting gear 15 (containing motor) is stepless reducer, and rotating speed can be regulated arbitrarily between 8～40 rev/mins.That is to say that power adjusting is very easily.
Magnetic working medium adopts the gadolinium of purity 99.5%, and detailed structure is referring to Fig. 4.Several working medium sheets (gadolinium sheet) 3 are formed the working medium group.Gadolinium sheet thickness is 1mm, and gadolinium sheet spacing also is 1mm.Two kinds of frame modes are specifically arranged, A type and Type B.A type structure cuts out with the monoblock gadolinium.The Type B structure is that several pieces gadolinium sheets are fixed on two expoxy glass steel bars, forms gadolinium sheet group.Concrete way is: on the expoxy glass steel bar, it is wide to be carved with 1mm, and the sulculus of spacing 1mm will be coated epoxy resin in the middle of the gadolinium sheet end, in the insertion groove, treat epoxy resin cure after, promptly become required gadolinium sheet group.Epoxy gluing technology and curing agent have a variety of, make curing agent with polyamide here.The ratio of curing agent and epoxy resin is 1: 1, or the ratio of curing agent is less slightly.Cold curing can be used in about 24 hours.After working medium gadolinium sheet group is made, at the center of working medium group both ends of the surface, each to make a call to a centre bore, centre bore maximum gauge Ф 6, cone angle are 60 °.The purpose of centering is to be fixed on the working medium group on the working medium box 7 with screw 14 (see figure 2)s.Between screw 14 and the working medium box 7, seal with liquid sealant.Fluid sealant model: GF-12.As long as also available similar fluid sealant is can seal fluid.
Used working medium box is the thin-walled plastic box of compression moulding, and its wall thickness is 0.5mm.But a little flange 16 is arranged on the right side, middle part of box, and it is thick to be 5mm (as Fig. 5).There is the screw 17 of M6 in little flange center, so that with screw 14 working medium group and working medium box 7 are fixed together.There is the aperture 18 of four Ф 6 at four angles of little flange, by hole 18 usefulness screws the connector 28 on working medium box and the support 24 are fixed together.Cool end heat exchanger 8 is arranged at working medium box 7 bottoms, and its heat exchanger passes box wall place, the available epoxy sealing.The bottom thermometric passes box wall place with copper-constantan thermocouple 19 and uses epoxy sealing equally.Hot end heat exchanger 1 and copper-constantan thermocouple are arranged at working medium box 7 tops, but top does not need sealing, cover with loam cake to get final product.
For further improving refrigerating efficiency, outstanding device characteristic adopts the magnetic field-intensification heat exchange among the present invention, and it strengthens used magnetic field is exactly that use device itself is used for making working medium to produce the main field of magnetothermal effect, and does not need to add in addition magnetic field.As long as when structural design, main field is used just can dexterously.Specific design is: fix a stainless steel cloth 29 at the lower plane of working medium group, in original sheet working medium group, add granular working medium 30, charge weight be between sheet voidage 1/3, fix a stainless steel cloth 31 again in sheet working medium group upper surface then, specifically as shown in Figure 6.Working medium group shown in Figure 6 has just constituted magnetic field-intensification heat transfer free convection assembly with magnet system.This assembly implement several big advantages: 1. granular working medium can moving with magnet, and relative motion is at a slow speed arranged between fixed sheet working medium, thereby wash away, destroy the laminar sublayer on sheet working medium surface, the thermal boundary layer of thermal resistance maximum is damaged, increase the coefficient of heat transfer; 2. add granular working medium, whole working medium amount is strengthened, all favourable to increasing refrigeration work consumption and reducing cryogenic temperature; 3. when granular working medium during along with magnet movement, the heat exchanging fluid stirs and makes it to produce eddy current, and drives fluid and move simultaneously, thereby in original pure heat transfer free convection process, adds a forced convertion component.These characteristics have more been given prominence to the advantage of enhancements.General enhanced heat exchange measure (as insert in extended surface, rough surface, the pipe etc.) often in heat conduction reinforced, cause the increase of flow resistance; And enhancements of the present invention is mobile better in heat conduction reinforced when implementing.Specific implementation method is with reference to figure 1 and Fig. 6.
Before system did not start, granular working medium 30 was in working medium group bottom in the working medium group, shown in Fig. 6 a.When system starts, magnet system turns to working medium group place, granular working medium 30 moves upward along with the motion of magnet system under the effect of magnetic field force, upwards (working medium is magnetized and generates heat in this process to drive fluid simultaneously, and heat passed to fluid), the power that this moment, fluid made progress is made up of two parts, promptly flows naturally and forced flow.When magnet system moves to working medium group top and since top silk screen 31 stop that granular working medium 30 is parked in the top of working medium group, shown in Fig. 6 b.Magnet continues to move to when breaking away from magnetic working medium district fully, and granular working medium 30 drops to the bottom automatically under the gravity effect, recovers the situation shown in Fig. 6 a.Before granular working medium 30 fell, part working medium had been in demagnetized state, began cooling and absorbed heat; When granular working medium 30 fell, all working medium all was in demagnetized state, and its temperature reduces the absorption fluids heat.The density of the fluid that temperature reduces increases, and flows downward naturally, and under the granular working medium 30 that falls drives, quickens to move downward.
Can find out from said process, when between granular working medium 30 and the working medium sheet 3 during relative motion, both can wash away heat exchange surface, breakable layer laminar sublayer and thermal boundary layer, can denude the oxide layer on working medium surface again, the motion of granular working medium 30 simultaneously can be stirred by convection cell, produces eddy current, and these factors are strengthened original heat transfer free convection greatly.In addition, when granular working medium 30 is moved with magnet system, on the basis of free convection, added and forced components of flow, strengthened flowing of fluid.Generally speaking, the mobile effect of strengthening in pairs that played of this enhancements heat exchanging and fluid.
In designed enhancements, the upper and lower end face of working medium group place has adopted silk screen 29,31, need be described further at this.The zone at magnetic working medium place is the heat transfer free convection district, and magnetic field-intensification mainly is at this regional enhanced heat exchange, and (cold) fluid that is heated is sent the working medium district rapidly; And beyond the working medium district, be pure fluid nature flow region.Do not wish that at fluid nature flow region fluid is subjected to bigger stirring, because big stirring can cause cold fluid and hot fluid and mix, can't keep big temperature to stride (Brown (J.Appl.Phys.47:3673 at the fluid upper and lower end, 1976) one of subject matter that device exists is exactly that fluid agitation strides with power the temperature of device to be restricted), address this problem, must be by means of silk screen.Therefore use silk screen to mainly contain two kinds of effects: the one, stop granular working medium 30, make it be limited in (if select silk screen in view of the above, as long as the silk screen hole is less than the diameter of granular working medium) within the sheet working medium.The 2nd, reduce the influence of the stirring of magnetic working medium district fluid to upper and lower natural flow region, that is to say that silk screen wants convection cell that certain resistance is arranged, mesh can not be too big.Experiment showed, that under the actual conditions of present embodiment it is suitable selecting 100 purpose silk screens (silk screen hole centre-to-centre spacing is 0.25mm) for use.
Claims (3)
1. heat transfer free convection formula room temperature magnetic refrigerating device, by magnetic working medium, working medium box, cold-storage fluid, mozzle, magnet system, driving speed adjusting gear are formed up and down, magnetic working medium is meant the working medium group of being made up of working medium sheet (3), filled granular working medium (30) between the gap of the working medium group that working medium sheet (3) is formed, and granular working medium (30) is enclosed in the inside by silk screen (29), (31), magnetic working medium is immersed in the cold-storage fluid (6), and is fixed on the working medium box (7); Cold-storage fluid (6) is housed in the working medium box (7), and is fixed on the support (24); Last mozzle (2) and following mozzle (5) are placed in the upper and lower of magnetic working medium respectively; Magnet system is made up of permanent magnet (4) and yoke (12), and magnet system is connected and fixed with axle (9) through support arm (20), sleeve (21), drives speed adjusting gear (15) and drives the magnet system rotation by axle (9).
2. a kind of heat transfer free convection formula room temperature magnetic refrigerating device according to claim 1, it is characterized in that the working medium group can adopt A or Type B frame mode, A type structure is meant and cuts out that the working medium sheet couples together with working medium itself between (3) on the working medium of a monoblock; The Type B structure is meant that a multi-disc working medium sheet (3) is nested on two no magnetic materials, and then fixes with binding agent.
3. a kind of heat transfer free convection formula room temperature magnetic refrigerating device according to claim 1 is characterized in that the Taper Pipe that is shaped as of mozzle (2) and following mozzle (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100409221A CN100368742C (en) | 2004-10-28 | 2004-10-28 | Natural convection heat transfer type room-temperature magnetic Refrigerator |
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|---|---|---|---|
| CNB2004100409221A CN100368742C (en) | 2004-10-28 | 2004-10-28 | Natural convection heat transfer type room-temperature magnetic Refrigerator |
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| CN1766463A CN1766463A (en) | 2006-05-03 |
| CN100368742C true CN100368742C (en) | 2008-02-13 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100779197B1 (en) * | 2006-07-10 | 2007-11-23 | 주식회사 대우일렉트로닉스 | Shuttle type regenerator and magnetic refrigerator using the regenerator |
| CN101275793B (en) * | 2007-03-27 | 2010-05-19 | 中国科学院理化技术研究所 | Heat voice magnetic refrigeration low temperature system |
| CN102305446A (en) * | 2011-09-15 | 2012-01-04 | 芜湖博耐尔汽车电气***有限公司 | Magnetic refrigeration device for electric automobile air conditioner and control method for magnetic refrigeration device |
| CN104457017B (en) * | 2014-11-28 | 2017-01-11 | 华南理工大学 | Packaging box for magnetic working medium used for magnetic refrigeration circulation |
| CN105909856B (en) * | 2016-05-19 | 2018-03-20 | 横店集团东磁股份有限公司 | Magnetic refrigerator cold-storage bed special combination valve arrangement |
| CN105890222A (en) * | 2016-06-05 | 2016-08-24 | 山东商业职业技术学院 | Non-contact electromagnetic quick cold storage system based on magnetic rotation enhanced heat transfer |
| CN105841422A (en) * | 2016-06-05 | 2016-08-10 | 山东商业职业技术学院 | Non-contact type permanent magnet quick cold storage system based on magnetic rotation heat transfer enhancement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033734A (en) * | 1976-09-17 | 1977-07-05 | Steyert Jr William A | Continuous, noncyclic magnetic refrigerator and method |
| CN1107565A (en) * | 1994-02-25 | 1995-08-30 | 王金柱 | Magnetic refrigerating machine |
| CN1369675A (en) * | 2002-03-01 | 2002-09-18 | 四川工业学院 | Magnetically refrigerating unit of magnetic refrigerator |
-
2004
- 2004-10-28 CN CNB2004100409221A patent/CN100368742C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033734A (en) * | 1976-09-17 | 1977-07-05 | Steyert Jr William A | Continuous, noncyclic magnetic refrigerator and method |
| CN1107565A (en) * | 1994-02-25 | 1995-08-30 | 王金柱 | Magnetic refrigerating machine |
| CN1369675A (en) * | 2002-03-01 | 2002-09-18 | 四川工业学院 | Magnetically refrigerating unit of magnetic refrigerator |
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| CN1766463A (en) | 2006-05-03 |
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