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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- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- 230000005284 excitation Effects 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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]
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Abstract
本实用新型公开了一种用于室温磁制冷机的高效磁场结构，包括提供励磁源的U型永磁体，所述U型永磁体的两个磁极内侧对称地平行设置有L形内导磁套，两个磁极外侧对称地平行设置有L形外导磁套，位于同一磁极上的内导磁套和外导磁套于磁极顶端处紧密连接，两个所述内导磁套的相对面上设置有用金属粘合剂连接的凸台导磁片，所述U型永磁体内表面镶贴有呈U型波浪结构的铝合金散热器，所述铝合金散热器的长度方向的两端与分别与两个内导磁套的内端面连接。本实用新型永磁体系统有效减少漏磁现象对制冷机工作的干扰，工作空气间隙磁场强度强和均匀性好，有效提高了系统的热交换效率，结构简单，紧凑。
The utility model discloses a high-efficiency magnetic field structure for a room temperature magnetic refrigerator, which comprises a U-shaped permanent magnet providing an excitation source, and an L-shaped inner magnetic conduction sleeve is symmetrically arranged on the inside of two magnetic poles of the U-shaped permanent magnet in parallel. , the outer sides of the two magnetic poles are symmetrically provided with L-shaped outer magnetic sleeves in parallel, and the inner magnetic sleeves and outer magnetic sleeves located on the same magnetic pole are closely connected at the top of the magnetic poles, and the opposite surfaces of the two inner magnetic sleeves A boss magnetic guide sheet connected with a metal adhesive is provided, and the inner surface of the U-shaped permanent magnet is inlaid with an aluminum alloy radiator in a U-shaped wave structure, and the two ends of the aluminum alloy radiator in the length direction are respectively connected to Connect with the inner end faces of the two inner magnetic sleeves. The permanent magnet system of the utility model effectively reduces the interference of magnetic flux leakage to the operation of the refrigerator, has strong magnetic field strength and good uniformity in the working air gap, effectively improves the heat exchange efficiency of the system, and has a simple and compact structure.
Description
技术领域 technical field
本实用新型涉及磁制冷机领域。尤其涉及一种室温磁制冷机的高效磁场结构。 The utility model relates to the field of magnetic refrigerators. In particular, it relates to a high-efficiency magnetic field structure of a room-temperature magnetic refrigerator.
背景技术 Background technique
我国空气环境质量问题日趋严峻，利用氟利昂类制冷剂来制冷的传统制冷工业面临重大挑战，对传统制冷机的“绿色化”节能减排成为当今制冷业的主要课题。利用磁制冷工质的磁热效应（Magnetocaloric Effect，MCE）,即磁制冷工质在绝热退磁时从外界吸收热量，绝热励磁时向外界放出热量的现象可研发出往复式的室温磁制冷机。其原理是磁工质电子磁矩在磁场中的有序排列，造成磁熵降低，导致磁工质发热；磁工质退出磁场后磁矩排列无序，磁熵增大，磁工质从外界吸收热量。这两个过程利用卡诺循环（Carnot cycle）、埃里克森循环（Ericsson cycle）、斯特林循环（Stirling cycle）以及布莱顿循环（brayton cycle）连接在一起就可以实现25℃~18℃的制冷效果。 The problem of air quality in our country is becoming more and more serious. The traditional refrigeration industry using freon refrigerants for refrigeration is facing major challenges. The "green" energy saving and emission reduction of traditional refrigerators has become the main topic of today's refrigeration industry. Using the magnetocaloric effect (Magnetocaloric Effect, MCE) of the magnetic refrigerant, that is, the phenomenon that the magnetic refrigerant absorbs heat from the outside during adiabatic demagnetization and releases heat to the outside during adiabatic excitation, a reciprocating room temperature magnetic refrigerator can be developed. The principle is that the orderly arrangement of the magnetic moments of the magnetic working medium electrons in the magnetic field causes the decrease of the magnetic entropy and the heating of the magnetic working medium; after the magnetic working medium exits the magnetic field, the arrangement of the magnetic moments is disordered, the magnetic entropy increases, and the magnetic working medium is released from the outside absorb heat. These two processes can be connected together by Carnot cycle, Ericsson cycle, Stirling cycle and Brayton cycle to achieve 25 ℃ ~ 18 ℃ cooling effect.
室温磁制冷机主要由励磁源、磁工质、导热流体管和热交换器等部分组成。目前磁制冷机工业的磁场源主要采用超导磁体和永磁体两种形式。然而采用超导技术来研发制冷机并不现实，因其技术难度大且超导材料价格昂贵、维护难度大等缺点，故利用此技术的磁制冷机还停留在理论研究阶段。随着材料工业的发展，新型超强永磁材料陆续问世，利用永磁体来研发室温磁制冷机难度相对减小，且其经济性好，已于实现工业化、批量化生产。 The room temperature magnetic refrigerator is mainly composed of excitation source, magnetic working medium, heat transfer fluid tube and heat exchanger. At present, the magnetic field sources in the magnetic refrigerator industry mainly adopt two forms: superconducting magnets and permanent magnets. However, it is not realistic to use superconducting technology to develop refrigerators. Because of the technical difficulty, superconducting materials are expensive, and difficult to maintain, magnetic refrigerators using this technology are still in the theoretical research stage. With the development of the material industry, new ultra-strong permanent magnet materials have come out one after another. The difficulty of using permanent magnets to develop room temperature magnetic refrigerators is relatively reduced, and its economy is good, and industrialization and mass production have been realized.
但目前国内利用永磁体技术制成的室温磁制冷机存在着各种各样的缺陷与问题，概括起来主要包括以下三点： However, at present, there are various defects and problems in room temperature magnetic refrigerators made of permanent magnet technology in China. In summary, they mainly include the following three points:
1. 永磁体内部气隙场磁场强度不均匀，使制冷系统换热效率低。 1. The magnetic field strength of the air gap field inside the permanent magnet is uneven, which makes the heat transfer efficiency of the refrigeration system low.
2. 室温磁制冷机普遍存在漏磁现象，导致磁利用率不高。 2. There is a common phenomenon of magnetic flux leakage in room temperature magnetic refrigerators, resulting in low magnetic utilization.
3. 磁工质盒在永磁体内部气隙场中散热缓慢且困难，降低制冷系统的热利用率与换热效率。 3. It is slow and difficult for the magnetic working medium box to dissipate heat in the air gap field inside the permanent magnet, which reduces the heat utilization rate and heat exchange efficiency of the refrigeration system.
4. 永磁体内部气隙场间隙小，永磁体磁场系统加工难度大。 4. The internal air gap field of the permanent magnet is small, and the processing of the permanent magnet magnetic field system is difficult.
实用新型内容 Utility model content
为了克服上述现有技术的不足，本实用新型提供了一种结构简单、换热性能好、散热性能高、漏磁少的高效磁场结构。 In order to overcome the shortcomings of the prior art above, the utility model provides a high-efficiency magnetic field structure with simple structure, good heat exchange performance, high heat dissipation performance and less magnetic flux leakage.
为解决上述技术问题，本实用新型所采用的技术方案是： In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
一种用于室温磁制冷机的高效磁场结构，包括提供励磁源的U型永磁体，所述U型永磁体的两个磁极内侧对称地平行设置有L形内导磁套，两个磁极外侧对称地平行设置有L形外导磁套，位于同一磁极上的内导磁套和外导磁套于磁极顶端处紧密连接，两个所述内导磁套的相对面上设置有用金属粘合剂连接的凸台导磁片，所述U型永磁体内表面镶贴有呈U型波浪结构的铝合金散热器，所述铝合金散热器的长度方向的两端与分别与两个内导磁套的内端面连接，宽度与U型永磁体宽度相同，所述铝合金散热器能嵌入U型永磁体内侧底部与之形成过盈配合固定于U型永磁体中。所述铝合金散热器每个波峰的波幅尺寸大小与内导磁套位于磁极内侧处的厚度相同，避免磁工质盒在空隙中作往复运动时产生干涉现象。 A high-efficiency magnetic field structure for a room temperature magnetic refrigerator, including a U-shaped permanent magnet that provides an excitation source. The inner sides of the two magnetic poles of the U-shaped permanent magnet are symmetrically arranged in parallel with L-shaped inner magnetic sleeves, and the outer sides of the two magnetic poles are There are L-shaped outer magnetic sleeves symmetrically arranged in parallel, and the inner magnetic sleeves and outer magnetic sleeves located on the same magnetic pole are closely connected at the top of the magnetic poles, and the opposite surfaces of the two inner magnetic sleeves are provided with metal bonding. The magnetic conductive sheet of the boss connected with the agent, the inner surface of the U-shaped permanent magnet is inlaid with an aluminum alloy radiator in a U-shaped wave structure, and the two ends of the aluminum alloy radiator in the length direction are respectively connected to the two inner conductors. The inner end surface of the magnetic sleeve is connected, and the width is the same as that of the U-shaped permanent magnet. The aluminum alloy radiator can be embedded in the inner bottom of the U-shaped permanent magnet to form an interference fit and be fixed in the U-shaped permanent magnet. The amplitude of each wave peak of the aluminum alloy radiator is the same as the thickness of the inner magnetic sleeve at the inner side of the magnetic pole, so as to avoid interference when the magnetic working fluid box reciprocates in the gap.
进一步地，位于两个所述内导磁套上的凸台导磁片之间的间隙为18 mm -22mm。 Further, the gap between the bosses on the two inner magnetic sleeves is 18mm-22mm.
进一步地，位于两个所述内导磁套上的凸台导磁片的表面粗糙度的轮廓算术平均偏差Ra取值为0.05。 Further, the arithmetic average deviation Ra of the surface roughness profile of the magnetically conductive sheets of the bosses located on the two inner magnetically conductive sleeves is 0.05.
进一步地，位于两个所述内导磁套上的凸台导磁片的平行度为0.03-0.06。 Further, the parallelism of the magnetic conductive sheets of the bosses on the two inner magnetic sleeves is 0.03-0.06.
进一步地，所述凸台导磁片的长度与内导磁套相同，宽度比内导磁套小，以更利于磁场的集中。 Further, the length of the magnetically conductive sheet of the boss is the same as that of the inner magnetically conductive sleeve, and the width is smaller than that of the inner magnetically conductive sleeve, so as to be more conducive to the concentration of the magnetic field.
进一步地，位于同一磁极上的内导磁套和外导磁套于磁极顶端处通过由金属粘合剂连接的导磁片紧密连接。 Further, the inner magnetically conductive sleeve and the outer magnetically conductive sleeve located on the same magnetic pole are closely connected at the top of the magnetic pole through the magnetically conductive sheet connected by metal adhesive.
进一步地，所述的U型永磁体的材料采用稀土永磁材料钕铁硼（Nd2Fe14B）。 Further, the U-shaped permanent magnet is made of rare earth permanent magnet material NdFeB (Nd 2 Fe 14 B).
进一步地，所述内导磁套和外导磁套及凸台导磁片、导磁片均为工业纯铁，导磁性好，成本低。 Further, the inner and outer magnetic sleeves, the boss magnetic sheet, and the magnetic sheet are all industrial pure iron, which has good magnetic conductivity and low cost.
与现有技术相比，本实用新型的有益效果是：本新型设计优化了一般室温磁制冷机的磁场系统，简化了室温磁制冷机的磁场系统结构，减少了一般磁制冷机所具有的严重漏磁现象。此外，镶嵌在永磁体的散热片有效地加快了系统的散热，让磁制冷机的热利用率和换热效率更高。 Compared with the prior art, the beneficial effects of the utility model are: the design of the utility model optimizes the magnetic field system of the general room temperature magnetic refrigerator, simplifies the structure of the magnetic field system of the room temperature magnetic refrigerator, and reduces the serious problems of the general magnetic refrigerator. Flux leakage phenomenon. In addition, the heat sink embedded in the permanent magnet effectively speeds up the heat dissipation of the system, making the heat utilization rate and heat exchange efficiency of the magnetic refrigerator higher.
附图说明 Description of drawings
图1为本实用新型实施例的剖视结构示意图。 Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the utility model.
图2为本实用新型实施例的立体示意图。 Fig. 2 is a three-dimensional schematic diagram of an embodiment of the utility model.
图3为U型波浪散热片的结构示意图。 Fig. 3 is a schematic structural diagram of a U-shaped corrugated heat sink.
图4为普通磁制冷机的磁系统及磁场分布结构示意图。 Fig. 4 is a schematic diagram of a magnetic system and a magnetic field distribution structure of a common magnetic refrigerator.
图5为本实用新型的磁系统及磁场分布结构示意图。 Fig. 5 is a schematic diagram of the magnetic system and magnetic field distribution structure of the present invention.
图中标号与名称如下：1-U型永磁体；2-外导磁套；3-导磁片；4-内导磁套；5-凸台导磁片；6-U型波浪散热片。 The labels and names in the figure are as follows: 1-U-shaped permanent magnet; 2-outer magnetic sleeve; 3-magnetic sheet; 4-inner magnetic sleeve; 5-boss magnetic sheet; 6-U-shaped wave heat sink.
具体实施方式 Detailed ways
下面结合附图和具体实施例对本实用新型的实用新型目的作进一步详细地描述，实施例不能在此一一赘述，但本实用新型的实施方式并不因此限定于以下实施例。 The purpose of the utility model will be further described in detail below in conjunction with the accompanying drawings and specific examples. The examples cannot be repeated here one by one, but the implementation of the utility model is not therefore limited to the following examples.
如图1至图3所示，一种用于室温磁制冷机的高效磁场结构，包括提供励磁源的U型永磁体1，所述U型永磁体1的两个磁极内侧对称地平行设置有起导磁左右的L形内导磁套4，两个磁极外侧对称地平行设置有起导磁左右的L形外导磁套2，位于同一磁极上的内导磁套4和外导磁套2于磁极顶端处紧密连接，两个所述内导磁套4的相对面上设置有用金属粘合剂连接的凸台导磁片5，所述U型永磁体1内表面镶贴有呈U型波浪结构的铝合金散热器6(见图3)，所述铝合金散热器6的长度方向的两端与分别与两个内导磁套4的内端面连接，宽度与U型永磁体1宽度相同，所述铝合金散热器6每个波峰的波幅尺寸大小与内导磁套4位于磁极内侧处的厚度相同。 As shown in Figures 1 to 3, a high-efficiency magnetic field structure for a room temperature magnetic refrigerator includes a U-shaped permanent magnet 1 that provides an excitation source, and two magnetic poles of the U-shaped permanent magnet 1 are symmetrically arranged in parallel on the inner side. The L-shaped inner magnetic sleeve 4 on the left and right sides of the magnetic conduction, the L-shaped outer magnetic sleeve 2 on the left and right sides of the two magnetic poles are symmetrically arranged in parallel on the outside of the two magnetic poles, the inner magnetic sleeve 4 and the outer magnetic sleeve on the same magnetic pole 2. It is tightly connected at the top of the magnetic pole. On the opposite surfaces of the two inner magnetic sleeves 4, there are boss magnetic conductive sheets 5 connected by metal adhesive. The inner surface of the U-shaped permanent magnet 1 is inlaid with a U The aluminum alloy radiator 6 (see Fig. 3) of type corrugated structure, the two ends of the longitudinal direction of described aluminum alloy radiator 6 are respectively connected with the inner end faces of two inner magnetic guide sleeves 4, and the width is the same as that of the U-shaped permanent magnet 1 The width is the same, and the amplitude size of each peak of the aluminum alloy radiator 6 is the same as the thickness of the inner magnetic sleeve 4 at the inner side of the magnetic pole.
作为进一步的实施例，位于两个所述内导磁套4上的凸台导磁片5之间的间隙为18 mm -22mm。 As a further embodiment, the gap between the bosses 5 on the two inner magnetic sleeves 4 is 18mm-22mm.
作为进一步的实施例，位于两个所述内导磁套4上的凸台导磁片5的表面粗糙度的轮廓算术平均偏差Ra取值为0.05。 As a further embodiment, the arithmetic mean deviation Ra of the surface roughness profile of the bosses 5 on the two inner magnetic sleeves 4 is 0.05.
作为进一步的实施例，位于两个所述内导磁套4上的凸台导磁片5的平行度为0.03-0.06，本实施例为0.05。 As a further embodiment, the parallelism of the bosses 5 on the two inner magnetic sleeves 4 is 0.03-0.06, and in this embodiment it is 0.05.
作为进一步的实施例，所述凸台导磁片5的长度与内导磁套4相同，宽度比内导磁套4小。 As a further embodiment, the length of the magnetically conductive sheet 5 of the boss is the same as that of the inner magnetically conductive sleeve 4 , and the width is smaller than that of the inner magnetically conductive sleeve 4 .
作为进一步的实施例，位于同一磁极上的内导磁套4和外导磁套2于磁极顶端处通过由金属粘合剂连接的导磁片3紧密连接。 As a further embodiment, the inner magnetically permeable sleeve 4 and the outer magnetically permeable sleeve 2 located on the same magnetic pole are tightly connected at the top of the magnetic pole through the magnetically permeable sheet 3 connected by metal adhesive.
作为进一步的实施例，所述的U型永磁体1的材料采用稀土永磁材料钕铁硼（Nd2Fe14B）。 As a further embodiment, the U-shaped permanent magnet 1 is made of rare earth permanent magnet material NdFeB (Nd 2 Fe 14 B).
作为进一步的实施例，所述内导磁套4和外导磁套2及凸台导磁片5、导磁片3均为工业纯铁。 As a further embodiment, the inner magnetic sleeve 4, the outer magnetic sleeve 2, the boss magnetic sheet 5, and the magnetic sheet 3 are all industrial pure iron.
相比普通磁制冷机的磁系统(见图4)，所述内导磁套4和外导磁套2分别于U型永磁体1的N、S极端相配合；突出的两凸台导磁片5互相平行，叠成突出平台结构形成狭窄的可调节的工作空气间隙，这样的结构设计有效地将磁感线集中在U型永磁体1中的空隙中，大大减少了漏磁现象，时磁场分布更加均匀(见图5)；所述的U型波浪散热片6能与U型永磁体1空隙末端相配合，其表面为波浪形结构，以此增大散热面积，加大散热效率，其整体厚度与内导磁套4相同，避免了磁工质盒在间隙中运动的干涉现象。所述的永磁体为稀土永磁材料钕铁硼（Nd2Fe14B）永磁体；所述的导磁体套筒为工业纯铁（Fe），导磁性好。 Compared with the magnetic system of an ordinary magnetic refrigerator (see Figure 4), the inner magnetic sleeve 4 and the outer magnetic sleeve 2 are respectively matched with the N and S extremes of the U-shaped permanent magnet 1; the two prominent bosses are magnetically conductive The pieces 5 are parallel to each other and stacked into a protruding platform structure to form a narrow and adjustable working air gap. This structural design effectively concentrates the magnetic field lines in the gap in the U-shaped permanent magnet 1, greatly reducing the magnetic flux leakage phenomenon, and the time The magnetic field distribution is more uniform (see Fig. 5); The U-shaped wave heat sink 6 can cooperate with the U-shaped permanent magnet 1 gap end, and its surface is a wave-shaped structure, so as to increase the heat dissipation area and increase the heat dissipation efficiency. Its overall thickness is the same as that of the inner magnetic sleeve 4, which avoids the interference phenomenon of the movement of the magnetic working medium box in the gap. The permanent magnet is a rare earth permanent magnet material neodymium iron boron (Nd 2 Fe 14 B) permanent magnet; the magnet guide sleeve is industrial pure iron (Fe), which has good magnetic permeability.
实施例中的铝合金散热器6嵌入U型永磁体1底部内侧与之形成过盈配合固定于U型永磁体1中。U型永磁体1上下两端各开有螺纹孔，所述内导磁套4和外导磁套2也各开有螺纹孔，位于同一磁极的内导磁套4和外导磁套2通过若干导磁片3用金属粘合剂连接起来，如此便能适合不同尺寸大小的U型永磁体1。此外，通过螺钉连接将内导磁套4和外导磁套2与U型永磁体1紧密连接在一起防止导磁套与永磁体之间产生相对运动。整个永磁系统以中心水平轴线对称。 The aluminum alloy radiator 6 in the embodiment is embedded inside the bottom of the U-shaped permanent magnet 1 to form an interference fit and fixed in the U-shaped permanent magnet 1 . The upper and lower ends of the U-shaped permanent magnet 1 are respectively provided with threaded holes, and the inner magnetic sleeve 4 and the outer magnetic sleeve 2 are also respectively provided with threaded holes, and the inner magnetic sleeve 4 and the outer magnetic sleeve 2 located at the same magnetic pole pass through Several magnetically conductive sheets 3 are connected with metal adhesive, so that they can be suitable for U-shaped permanent magnets 1 of different sizes. In addition, the inner magnetic sleeve 4 and the outer magnetic sleeve 2 are closely connected with the U-shaped permanent magnet 1 through screw connection to prevent relative movement between the magnetic sleeve and the permanent magnet. The whole permanent magnet system is symmetrical with the central horizontal axis.
本实用新型的关键点在于内导磁套4和外导磁套2、U型波浪散热片6以及凸台导磁片5的设计上，为了让U型永磁体1间隙的磁场集中且减少漏磁，内外导磁套凸台表面精度高且互相平行。此外，内导磁套4和外导磁套2通过若干导磁片连接的设计以便于适用于不同尺寸大小的永磁体并确保了其配合精度。U型波浪散热片6设计成波浪形，增大了U型波浪散热片6与U型永磁体1中空气的接触面积，从而增大了换热效率。U型永磁体1系统内的间隙大小与其内部磁场强度有关，通过凸台导磁片5与内导磁套4的连接，能调整U型永磁体1系统内部间隙的大小，以适合不同尺寸规格的磁工质盒，而且还减少U型永磁体1的加工难度了。 The key point of the utility model lies in the design of the inner magnetic sleeve 4 and the outer magnetic sleeve 2, the U-shaped wave heat sink 6 and the boss magnetic sheet 5, in order to concentrate the magnetic field in the gap of the U-shaped permanent magnet 1 and reduce leakage. Magnetic, inner and outer magnetic sleeve bosses have high surface precision and are parallel to each other. In addition, the design that the inner magnetic sleeve 4 and the outer magnetic sleeve 2 are connected by several magnetic sheets is suitable for permanent magnets of different sizes and ensures the matching accuracy. The U-shaped wavy heat sink 6 is designed in a wavy shape, which increases the contact area between the U-shaped wavy heat sink 6 and the air in the U-shaped permanent magnet 1, thereby increasing the heat exchange efficiency. The size of the gap in the U-shaped permanent magnet 1 system is related to the strength of its internal magnetic field. Through the connection between the boss magnetic sheet 5 and the inner magnetic sleeve 4, the size of the internal gap in the U-shaped permanent magnet 1 system can be adjusted to suit different sizes. The magnetic working medium box, but also reduces the processing difficulty of the U-shaped permanent magnet 1.
本实用新型的上述实施例仅仅是为清楚地说明本实用新型所作的举例，而并非是对本实用新型的实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型权利要求的保护范围之内。 The above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.
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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 |
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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 |
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