CN204204545U - A kind of efficient magnetic field structure for room-temperature magnetic refrigerator - Google Patents
A kind of efficient magnetic field structure for room-temperature magnetic refrigerator Download PDFInfo
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- CN204204545U CN204204545U CN201420728998.2U CN201420728998U CN204204545U CN 204204545 U CN204204545 U CN 204204545U CN 201420728998 U CN201420728998 U CN 201420728998U CN 204204545 U CN204204545 U CN 204204545U
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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
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- 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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Abstract
The utility model discloses a kind of efficient magnetic field structure for room-temperature magnetic refrigerator, comprise the U-shaped permanent magnet that excitation source is provided, flux sleeve in L shape is arranged with symmetrically in parallel inside two magnetic poles of described U-shaped permanent magnet, the outer flux sleeve of L shape is arranged with symmetrically in parallel outside two magnetic poles, be positioned at flux sleeve on same magnetic pole and outer magnetic conduction is placed on magnetic pole top end compact siro spinning technology, the opposite face of two described interior flux sleeves is provided with the boss magnetic conduction sheet connected with metal-to-metal adhesive, described U-shaped permanent magnet inner surface edge posts the aluminium alloy heat radiator of U-shaped wave structure, the two ends of the length direction of described aluminium alloy heat radiator be connected with the inner face of two interior flux sleeves respectively.The utility model permanent magnet systems effectively reduces the interference of leakage field phenomenon to refrigeration machine work, and control air gap magnetic field intensity is strong and uniformity is good, effectively improves the heat exchanger effectiveness of system, and structure is simple, compact.
Description
Technical field
The utility model relates to magnetic refrigerator field.Particularly relate to a kind of efficient magnetic field structure of room-temperature magnetic refrigerator.
Background technology
China's quality of air environment problem is increasingly severe, utilizes the conventional refrigeration industry that freon class cold-producing medium freezes to face significant challenge, " greenization " energy-saving and emission-reduction of conventional chiller is become to the major subjects of current refrigeration industry.Utilize the magneto-caloric effect (Magnetocaloric Effect, MCE) of magnetic refrigeration working substance, namely magnetic refrigeration working substance absorbs heat when adiabatic demagnetization from the external world, and during adiabatic excitation, outwardly exothermic phenomenon can develop shuttle room-temperature magnetic refrigerator.Its principle is the ordered arrangement of magnetic working medium electron magnetic moment in magnetic field, causes magnetic entropy to reduce, and causes magnetic working medium to be generated heat; After magnetic working medium exits magnetic field, magnetic moment arrangement is unordered, and magnetic entropy increases, and magnetic working medium absorbs heat from the external world.These two processes utilize Carnot cycle (Carnot cycle), Ericsson cycle (Ericsson cycle), Stirling cycle (Stirling cycle) and Brighton circulation (brayton cycle) to link together the refrigeration that just can realize 25 DEG C ~ 18 DEG C.
Room-temperature magnetic refrigerator is primarily of part compositions such as excitation source, magnetic working medium, heat-conducting fluid pipe and heat exchangers.The magnetic field sources of current magnetic refrigerator industry mainly adopts superconducting magnet and permanent magnet two kinds of forms.But adopt superconductor technology to research and develop refrigeration machine and unrealistic, because of its technical difficulty is large and superconductor is expensive, maintenance difficulties is large etc. shortcoming, therefore utilize the magnetic refrigerator of this technology also to rest on theoretical research stage.Along with the development of material industry, novel superpower permanet magnetic material comes out successively, utilizes permanent magnet relatively to reduce to research and develop room-temperature magnetic refrigerator difficulty, and its good economy performance, in realizing industrialization, mass production.
But the domestic room-temperature magnetic refrigerator utilizing permanent magnet technology to make also exists various defect and problem at present, sum up and mainly comprise following 3 points:
1. permanent magnet internal air gap field magnetic field intensity is uneven, makes refrigerating system heat exchange efficiency low.
2. room-temperature magnetic refrigerator ubiquity leakage field phenomenon, causes magnetic utilance not high.
3. magnetic working medium box dispels the heat slowly and difficult in permanent magnet internal air gap field, the heat utilization efficiency of reduction refrigerating system and heat exchange efficiency.
4. gap, permanent magnet internal air gap field is little, and permanent magnet magnetic field system difficulty of processing is large.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides the efficient magnetic field structure that a kind of structure is simple, heat exchange property good, heat dispersion is high, leakage field is few.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of efficient magnetic field structure for room-temperature magnetic refrigerator, comprise the U-shaped permanent magnet that excitation source is provided, flux sleeve in L shape is arranged with symmetrically in parallel inside two magnetic poles of described U-shaped permanent magnet, the outer flux sleeve of L shape is arranged with symmetrically in parallel outside two magnetic poles, be positioned at flux sleeve on same magnetic pole and outer magnetic conduction is placed on magnetic pole top end compact siro spinning technology, the opposite face of two described interior flux sleeves is provided with the boss magnetic conduction sheet connected with metal-to-metal adhesive, described U-shaped permanent magnet inner surface edge posts the aluminium alloy heat radiator of U-shaped wave structure, the two ends of the length direction of described aluminium alloy heat radiator be connected with the inner face of two interior flux sleeves respectively, width is identical with U-shaped permanent magnet width, described aluminium alloy heat radiator can embed U-shaped permanent magnet inside bottom and form with it interference fit and be fixed in U-shaped permanent magnet.It is identical that wave amplitude size and the interior flux sleeve of each crest of described aluminium alloy heat radiator are positioned at the thickness located inside magnetic pole, produces interference when avoiding magnetic working medium box reciprocating in space.
Further, the gap between the boss magnetic conduction sheet on two described interior flux sleeves is 18 mm-22mm.
Further, the profile arithmetic average error Ra value being positioned at the surface roughness of the boss magnetic conduction sheet on two described flux sleeves is 0.05.
Further, the depth of parallelism being positioned at the boss magnetic conduction sheet on two described flux sleeves is 0.03-0.06.
Further, the length of described boss magnetic conduction sheet is identical with interior flux sleeve, and width is less than interior flux sleeve, to be more conducive to concentrating of magnetic field.
Further, the flux sleeve be positioned on same magnetic pole is placed on the magnetic conduction sheet compact siro spinning technology of magnetic pole top end by being connected by metal-to-metal adhesive with outer magnetic conduction.
Further, the material of described U-shaped permanent magnet adopts rare earth permanent-magnetic material neodymium iron boron (Nd
2fe
14b).
Further, described interior flux sleeve and outer flux sleeve and boss magnetic conduction sheet, magnetic conduction sheet are Armco iron, and magnetic conductivity is good, and cost is low.
Compared with prior art, the beneficial effects of the utility model are: this new design optimizes the field system of general room-temperature magnetic refrigerator, simplify the field system structure of room-temperature magnetic refrigerator, decrease the serious leakage field phenomenon that general magnetic refrigerator has.In addition, the fin being embedded in permanent magnet accelerates the heat radiation of system effectively, allow the heat utilization efficiency of magnetic refrigerator and heat exchange efficiency higher.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model embodiment.
Fig. 2 is the schematic perspective view of the utility model embodiment.
Fig. 3 is the structural representation of U-shaped wave fin.
Fig. 4 is magnetic system and the Distribution of Magnetic Field structural representation of common magnetic refrigerator.
Fig. 5 is magnetic system of the present utility model and Distribution of Magnetic Field structural representation.
Number in the figure and title as follows: 1-U type permanent magnet; The outer flux sleeve of 2-; 3-magnetic conduction sheet; Flux sleeve in 4-; 5-boss magnetic conduction sheet; 6-U type wave fin.
Embodiment
Be described in further detail utility model object of the present utility model below in conjunction with the drawings and specific embodiments, embodiment can not repeat one by one at this, but therefore execution mode of the present utility model is not defined in following examples.
As shown in Figure 1 to Figure 3, a kind of efficient magnetic field structure for room-temperature magnetic refrigerator, comprise the U-shaped permanent magnet 1 that excitation source is provided, flux sleeve 4 in the L shape about magnetic conduction has been arranged with symmetrically in parallel inside two magnetic poles of described U-shaped permanent magnet 1, the outer flux sleeve 2 of L shape about magnetic conduction has been arranged with symmetrically in parallel outside two magnetic poles, be positioned at flux sleeve 4 on same magnetic pole and outer flux sleeve 2 in magnetic pole top end compact siro spinning technology, the opposite face of two described interior flux sleeves 4 is provided with the boss magnetic conduction sheet 5 connected with metal-to-metal adhesive, described U-shaped permanent magnet 1 inner surface edge posts the aluminium alloy heat radiator 6 (see Fig. 3) of U-shaped wave structure, the two ends of the length direction of described aluminium alloy heat radiator 6 are connected with the inner face of flux sleeve 4 interior with two respectively, width is identical with U-shaped permanent magnet 1 width, it is identical that wave amplitude size and the interior flux sleeve 4 of each crest of described aluminium alloy heat radiator 6 are positioned at the thickness located inside magnetic pole.
As further embodiment, the gap between the boss magnetic conduction sheet 5 on two described interior flux sleeves 4 is 18 mm-22mm.
As further embodiment, the profile arithmetic average error Ra value being positioned at the surface roughness of the boss magnetic conduction sheet 5 on two described flux sleeves 4 is 0.05.
As further embodiment, the depth of parallelism being positioned at the boss magnetic conduction sheet 5 on two described flux sleeves 4 is 0.03-0.06, and the present embodiment is 0.05.
As further embodiment, the length of described boss magnetic conduction sheet 5 is identical with interior flux sleeve 4, and width is less than interior flux sleeve 4.
As further embodiment, be positioned at flux sleeve 4 on same magnetic pole and outer flux sleeve 2 in magnetic conduction sheet 3 compact siro spinning technology of magnetic pole top end by being connected by metal-to-metal adhesive.
As further embodiment, the material of described U-shaped permanent magnet 1 adopts rare earth permanent-magnetic material neodymium iron boron (Nd
2fe
14b).
As further embodiment, described interior flux sleeve 4 and outer flux sleeve 2 and boss magnetic conduction sheet 5, magnetic conduction sheet 3 are Armco iron.
Compare the magnetic system (see Fig. 4) of common magnetic refrigerator, described interior flux sleeve 4 and outer flux sleeve 2 extremely match respectively at N, S of U-shaped permanent magnet 1; Two outstanding boss magnetic conduction sheets 5 are parallel to each other, build up projecting platform structure and form narrow adjustable control air gap, magnetic induction line concentrates in the space in U-shaped permanent magnet 1 by such structural design effectively, greatly reduce leakage field phenomenon, time Distribution of Magnetic Field more evenly (see Fig. 5); Described U-shaped wave fin 6 can match with U-shaped permanent magnet 1 space end, its surface is wavy shaped configuration, with this increasing heat radiation area, strengthens radiating efficiency, its integral thickness is identical with interior flux sleeve 4, avoids the interference that magnetic working medium box moves in gap.Described permanent magnet is rare earth permanent-magnetic material neodymium iron boron (Nd
2fe
14b) permanent magnet; Described magnetic conductor sleeve is Armco iron (Fe), and magnetic conductivity is good.
Aluminium alloy heat radiator 6 in embodiment embeds U-shaped permanent magnet 1 bottom inside and forms with it interference fit and be fixed in U-shaped permanent magnet 1.U-shaped permanent magnet about 1 two ends respectively have screwed hole, described interior flux sleeve 4 and outer flux sleeve 2 also respectively have screwed hole, the flux sleeve 4 and the outer flux sleeve 2 that are positioned at same magnetic pole are coupled together with metal-to-metal adhesive by some magnetic conduction sheets 3, so just can be applicable to the U-shaped permanent magnet 1 of different size size.In addition, be connected by screw interior flux sleeve 4 and outer flux sleeve 2 are prevented from producing relative motion between flux sleeve and permanent magnet together with U-shaped permanent magnet 1 compact siro spinning technology.Whole permanent magnet system is symmetrical with central horizontal axis.
Key point of the present utility model is in the design of interior flux sleeve 4 and outer flux sleeve 2, U-shaped wave fin 6 and boss magnetic conduction sheet 5, in order to allow U-shaped permanent magnet 1 gap magnetic field concentration and reduce leakage field, inside and outside flux sleeve boss surface precision is high and parallel to each other.In addition, the design that is connected by some magnetic conduction sheets of interior flux sleeve 4 and outer flux sleeve 2 is so that be applicable to the permanent magnet of different size size and ensure that its quality of fit.U-shaped wave fin 6 is designed to waveform, increases the contact area of air in U-shaped wave fin 6 and U-shaped permanent magnet 1, thus increases heat exchange efficiency.The intrasystem gap length of U-shaped permanent magnet 1 is relevant with its internal magnetic field intensity, by the connection of boss magnetic conduction sheet 5 with interior flux sleeve 4, the size in U-shaped permanent magnet 1 internal system gap can be adjusted, with the magnetic working medium box of applicable different size specification, but also reduce the difficulty of processing of U-shaped permanent magnet 1.
Above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection range that all should be included in the utility model claim.
Claims (8)
1. the efficient magnetic field structure for room-temperature magnetic refrigerator, comprise the U-shaped permanent magnet (1) that excitation source is provided, it is characterized in that: inside two magnetic poles of described U-shaped permanent magnet (1), be arranged with flux sleeve (4) in L shape symmetrically in parallel, the outer flux sleeve (2) of L shape is arranged with symmetrically in parallel outside two magnetic poles, be positioned at flux sleeve (4) on same magnetic pole and outer flux sleeve (2) in magnetic pole top end compact siro spinning technology, the opposite face of two described interior flux sleeves (4) is provided with the boss magnetic conduction sheet (5) connected with metal-to-metal adhesive, described U-shaped permanent magnet (1) inner surface edge posts the aluminium alloy heat radiator (6) of U-shaped wave structure, the two ends of the length direction of described aluminium alloy heat radiator (6) are connected with the inner face of two interior flux sleeves (4) respectively, width is identical with U-shaped permanent magnet (1) width, it is identical that wave amplitude size and the interior flux sleeve (4) of described aluminium alloy heat radiator (6) each crest are positioned at the thickness located inside magnetic pole.
2. the efficient magnetic field structure for room-temperature magnetic refrigerator according to claim 1, is characterized in that: the gap be positioned between the boss magnetic conduction sheet (5) on two described flux sleeves (4) is 18 mm-22mm.
3. the efficient magnetic field structure for room-temperature magnetic refrigerator according to claim 1, is characterized in that: the profile arithmetic average error Ra value being positioned at the surface roughness of the boss magnetic conduction sheet (5) on two described flux sleeves (4) is 0.05.
4. the efficient magnetic field structure for room-temperature magnetic refrigerator according to claim 1, is characterized in that: the depth of parallelism being positioned at the boss magnetic conduction sheet (5) on two described flux sleeves (4) is 0.03-0.06.
5. the efficient magnetic field structure for room-temperature magnetic refrigerator according to claim 1, is characterized in that: the length of described boss magnetic conduction sheet (5) is identical with interior flux sleeve (4), and width is less than interior flux sleeve (4).
6. the efficient magnetic field structure for room-temperature magnetic refrigerator according to any one of claim 1 to 5, is characterized in that: be positioned at flux sleeve (4) on same magnetic pole and outer flux sleeve (2) in magnetic conduction sheet (3) compact siro spinning technology of magnetic pole top end by being connected by metal-to-metal adhesive.
7. the efficient magnetic field structure for room-temperature magnetic refrigerator according to claim 1, is characterized in that: the material of described U-shaped permanent magnet (1) adopts rare earth permanent-magnetic material neodymium iron boron (Nd
2fe
14b).
8. the efficient magnetic field structure for room-temperature magnetic refrigerator according to claim 6, is characterized in that: described interior flux sleeve (4) and outer flux sleeve (2) and boss magnetic conduction sheet (5), magnetic conduction sheet (3) are Armco iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728998.2U CN204204545U (en) | 2014-11-28 | 2014-11-28 | A kind of efficient magnetic field structure for room-temperature magnetic refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728998.2U CN204204545U (en) | 2014-11-28 | 2014-11-28 | A kind of efficient magnetic field structure for room-temperature magnetic refrigerator |
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| CN204204545U true CN204204545U (en) | 2015-03-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409190A (en) * | 2014-11-28 | 2015-03-11 | 华南理工大学 | Efficient magnetic field structure for room-temperature magnetic refrigerator |
| CN105931799A (en) * | 2016-06-16 | 2016-09-07 | 重庆大学 | Permanent magnet structure with constant gradient |
-
2014
- 2014-11-28 CN CN201420728998.2U patent/CN204204545U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409190A (en) * | 2014-11-28 | 2015-03-11 | 华南理工大学 | Efficient magnetic field structure for room-temperature magnetic refrigerator |
| CN105931799A (en) * | 2016-06-16 | 2016-09-07 | 重庆大学 | Permanent magnet structure with constant gradient |
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