CN103245124A - Thermomagnetic exchange device - Google Patents

Thermomagnetic exchange device Download PDF

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CN103245124A
CN103245124A CN2012103896534A CN201210389653A CN103245124A CN 103245124 A CN103245124 A CN 103245124A CN 2012103896534 A CN2012103896534 A CN 2012103896534A CN 201210389653 A CN201210389653 A CN 201210389653A CN 103245124 A CN103245124 A CN 103245124A
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CN103245124B (en
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郭吉祥
吴调原
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Delta Electronics Inc
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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
    • 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
    • F25B2321/0023—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with modulation, influencing or enhancing an existing magnetic field
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

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  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
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Abstract

A thermomagnetic exchange device comprises a heat exchange element and a magnetic unit. The heat exchange element has at least one flow channel for conveying a heat-carrying fluid. The magnetic field unit is arranged around the heat exchange element and used for providing a magnetic field to the heat exchange element. The strength of the magnetic field may be non-uniform. The cross-sectional area of the flow channel corresponds to the magnetic field, so that the temperature gradient at different points on the heat exchange element is substantially the same when the heat-carrying fluid flows through the flow channel.

Description

热磁交换装置Thermal Magnetic Exchange Device

技术领域technical field

本发明主要关于一种热磁交换装置，尤指一种包括产生磁场于热交换元件的磁场单元的热磁交换装置。The present invention mainly relates to a thermomagnetic exchange device, especially a thermomagnetic exchange device including a magnetic field unit that generates a magnetic field for a heat exchange element.

背景技术Background technique

一般而言，磁冷冻机为一高效能与一环保的冷冻技术。磁冷冻技术利用了热磁材料（magnetocaloric materials,MCM)的热磁效应来达成冷冻循环（refrigeration cycles）。In general, a magnetic refrigerator is a high-efficiency and an environmentally friendly refrigeration technology. Magnetic freezing technology utilizes the thermomagnetic effect of magnetocaloric materials (MCM) to achieve refrigeration cycles.

如图1所示，现有的热磁交换装置1包括一热交换元件10以及一磁性单元20。热交换元件10包括一流道11以及多个流道12。流道11位于两流道12之间。于此例子中，携热流体流过流道11、12，且流道11、12的截面积相等，两相邻的流道11、12之间的距离也相同。磁性单元20产生磁场于热交换元件10。由于磁场为非均匀的，因此于流道11内的磁场大于流道12内的磁场，导致热交换元件10对于流道11内携热流体之间的热交换率大于热交换元件10对于流道12内携热流体之间的热交换率，且热磁交换装置1的效率因此而降低。As shown in FIG. 1 , a conventional thermomagnetic exchange device 1 includes a heat exchange element 10 and a magnetic unit 20 . The heat exchange element 10 includes a channel 11 and a plurality of channels 12 . The flow channel 11 is located between the two flow channels 12 . In this example, the heat-carrying fluid flows through the channels 11 , 12 , and the cross-sectional areas of the channels 11 , 12 are equal, and the distance between two adjacent channels 11 , 12 is also the same. The magnetic unit 20 generates a magnetic field for the heat exchange element 10 . Since the magnetic field is non-uniform, the magnetic field in the flow channel 11 is greater than the magnetic field in the flow channel 12, resulting in the heat exchange rate of the heat exchange element 10 for the heat-carrying fluid in the flow channel 11 being greater than that of the heat exchange element 10 for the flow channel 12 carries the heat exchange rate between the thermal fluids, and the efficiency of the thermomagnetic exchange device 1 is reduced accordingly.

发明内容Contents of the invention

为了解决上述现有技术的缺失，本发明的目的为提供一种热磁交换装置，包括一热交换元件以及一磁性单元。热交换元件具有至少一流道，磁性单元产生一磁场于热交换元件。当携热流体流经流道时，热交换元件上不同点的温度梯度（temperature gradient）大致相同。In order to solve the above shortcomings of the prior art, the object of the present invention is to provide a thermo-magnetic exchange device, which includes a heat exchange element and a magnetic unit. The heat exchanging element has at least one channel, and the magnetic unit generates a magnetic field on the heat exchanging element. When the heat-carrying fluid flows through the flow channel, the temperature gradient at different points on the heat exchange element is approximately the same.

为了达到上述的目的，本发明提供了一种热磁交换装置，包括一热交换元件以及一磁性单元。热交换元件具有至少一用以输送一携热流体的流道以及两端。磁性单元设置于热交换元件的周围，并提供一磁场于热交换元件，其中磁场的强度为非均匀的。流道的截面积大小对应于磁场强度，以使当携热流体流过流道时，热交换元件的两端上的不同点的温度梯度大致相同。In order to achieve the above object, the present invention provides a thermomagnetic exchange device, which includes a heat exchange element and a magnetic unit. The heat exchanging element has at least one channel for delivering a heat-carrying fluid and two ends. The magnetic unit is arranged around the heat exchange element and provides a magnetic field to the heat exchange element, wherein the strength of the magnetic field is non-uniform. The size of the cross-sectional area of the flow channel corresponds to the strength of the magnetic field, so that when the heat-carrying fluid flows through the flow channel, the temperature gradients at different points on both ends of the heat exchange element are approximately the same.

为了达到上述的目的，本发明另提供了一热磁交换装置，包括一热交换元件以及一磁性单元。热交换元件具有一第一流道以及一第二流道，用以输送一携热流体，其中第一流道具有一第一截面积，第二流道具有一第二截面积，且第一截面积大于第二截面积。磁性单元设置于热交换元件的周围，并提供一磁场于热交换元件。施加于第一流道的磁场的强度大于施加于第二流道的磁场的强度。In order to achieve the above object, the present invention further provides a thermo-magnetic exchange device, which includes a heat exchange element and a magnetic unit. The heat exchange element has a first flow channel and a second flow channel for transporting a heat-carrying fluid, wherein the first flow channel has a first cross-sectional area, and the second flow channel has a second cross-sectional area, and the first cross-sectional area is larger than the first cross-sectional area Second cross-sectional area. The magnetic unit is arranged around the heat exchange element and provides a magnetic field to the heat exchange element. The intensity of the magnetic field applied to the first flow channel is greater than the intensity of the magnetic field applied to the second flow channel.

为了达到上述的目的，本发明另提供了一热磁交换装置，包括一热交换元件以及一磁性单元。热交换元件具有多个第一流道以及至少一第二流道，用以输送一携热流体，其中两相邻的第一流道之间的距离小于相邻的第一流道以及第二流道之间的距离。磁性单元设置于热交换元件的周围，并提供一磁场于热交换元件。施加于每一第一流道的磁场的强度大于施加于第二流道的磁场的强度。In order to achieve the above object, the present invention further provides a thermo-magnetic exchange device, which includes a heat exchange element and a magnetic unit. The heat exchange element has a plurality of first flow channels and at least one second flow channel for transporting a heat-carrying fluid, wherein the distance between two adjacent first flow channels is smaller than the distance between the adjacent first flow channels and the second flow channels distance between. The magnetic unit is arranged around the heat exchange element and provides a magnetic field to the heat exchange element. The intensity of the magnetic field applied to each first flow channel is greater than the intensity of the magnetic field applied to the second flow channel.

综上所述，当携热流体流过流道时，热交换元件上不同点的温度梯度大致相同，进而使得热磁交换装置的热交换效率增加。To sum up, when the heat-carrying fluid flows through the flow channel, the temperature gradients at different points on the heat exchange element are approximately the same, thereby increasing the heat exchange efficiency of the thermomagnetic exchange device.

附图说明Description of drawings

图1为现有的热磁交换装置的示意图；Fig. 1 is the schematic diagram of existing thermomagnetic exchange device;

图2为本发明的热磁交换装置的第一实施例的示意图；Fig. 2 is the schematic diagram of the first embodiment of the thermomagnetic exchange device of the present invention;

图3为本发明的热交换元件的第一实施例的立体图；Figure 3 is a perspective view of the first embodiment of the heat exchange element of the present invention;

图4为图3的A-A’剖面的剖视图；Fig. 4 is the sectional view of A-A ' section of Fig. 3;

图5为本发明的热磁交换装置的第二实施例的示意图；以及5 is a schematic diagram of a second embodiment of the thermomagnetic exchange device of the present invention; and

图6为本发明的热磁交换装置的第三实施例的分解示意图。FIG. 6 is an exploded schematic diagram of a third embodiment of the thermomagnetic exchange device of the present invention.

其中，附图标记说明如下：Wherein, the reference signs are explained as follows:

热磁交换装置1Thermomagnetic Exchange Device 1

热交换元件10heat exchange element 10

流道11、12Runner 11, 12

磁性单元20Magnetic unit 20

热磁交换装置2、2a、2bThermomagnetic exchange device 2, 2a, 2b

热交换元件30、30a、30bHeat exchange elements 30, 30a, 30b

第一流道31、31a、The first runners 31, 31a,

第二流道32、32aSecond runner 32, 32a

流道部311、312、321、322Runner parts 311, 312, 321, 322

热交换部33、34Heat exchange parts 33, 34

磁性单元40、40bMagnetic unit 40, 40b

磁性部41、42Magnetic parts 41, 42

第一延伸方向D1First extension direction D1

第二延伸方向D2Second extension direction D2

纵向D3Vertical D3

截面S1Section S1

第一截面区域Z1First cross-sectional area Z1

第二截面区域Z2Second cross-sectional area Z2

具体实施方式Detailed ways

图2为本发明的热磁交换装置2的第一实施例的示意图，图3为本发明的热交换元件30的第一实施例的立体图，图4为图3的A-A’剖面的剖视图。热磁交换装置（thermo-magnetic exchanging device）2包括一热交换元件30以及二磁性单元40。热交换元件30可为一管状结构。Fig. 2 is a schematic diagram of the first embodiment of the thermomagnetic exchange device 2 of the present invention, Fig. 3 is a perspective view of the first embodiment of the heat exchange element 30 of the present invention, and Fig. 4 is a sectional view of the AA' section of Fig. 3 . The thermo-magnetic exchanging device 2 includes a heat exchanging element 30 and two magnetic units 40 . The heat exchange element 30 can be a tubular structure.

热交换元件30可选自于由至少一热磁材料（magnetocaloric material）所组成的族群中的材质所构成。举例而言，前述磁热材料可包括，但不予以限制，Mn-Fe-P-As合金、Mn-Fe-P-Si合金、Mn-Fe-P-Ge合金、Mn-As-Sb合金、Mn-Fe-Co-Ge合金、Mn-Ge-Sb合金、Mn-Ge-Si合金、La-Fe-Co-Si合金、La-Fe-Si-H合金、La-Na-Mn-O合金、La-K-Mn-O合金、La-Ca-Sr-Mn-O合金、La-Ca-Pb-Mn-O合金、La-Ca-Ba-Mn-O合金、Gd合金、Gd-Si-Ge、Gd-Yb合金、Gd-Si-Sb合金、Gd-Dy-Al-Co合金、或是Ni-Mn-Ga合金。The heat exchanging element 30 can be made of materials selected from the group consisting of at least one magnetocaloric material. For example, the aforementioned magnetocaloric materials may include, but are not limited to, Mn-Fe-P-As alloys, Mn-Fe-P-Si alloys, Mn-Fe-P-Ge alloys, Mn-As-Sb alloys, Mn-Fe-Co-Ge alloy, Mn-Ge-Sb alloy, Mn-Ge-Si alloy, La-Fe-Co-Si alloy, La-Fe-Si-H alloy, La-Na-Mn-O alloy, La-K-Mn-O alloy, La-Ca-Sr-Mn-O alloy, La-Ca-Pb-Mn-O alloy, La-Ca-Ba-Mn-O alloy, Gd alloy, Gd-Si-Ge , Gd-Yb alloy, Gd-Si-Sb alloy, Gd-Dy-Al-Co alloy, or Ni-Mn-Ga alloy.

热交换元件30包括一第一流道31以及二第二流道32，然而，第一流道31与第二流道32的数目并不予以限制。于本实施例中，第一流道31位于两第二流道32之间，且第一流道31与第二流道32可沿一第一延伸方向D1排列。前述的第一延伸方向D1平行于热交换元件30的一截面S1。热交换元件30、第一流道31、以及第二流道32可沿一纵向D3延伸。第一流道31以及第二流道32可用以输送一携热流体（heat-carrying fluid）。The heat exchange element 30 includes a first flow channel 31 and two second flow channels 32 , however, the numbers of the first flow channel 31 and the second flow channel 32 are not limited. In this embodiment, the first flow channel 31 is located between the two second flow channels 32 , and the first flow channel 31 and the second flow channel 32 can be arranged along a first extending direction D1. The aforementioned first extending direction D1 is parallel to a section S1 of the heat exchange element 30 . The heat exchange element 30 , the first channel 31 , and the second channel 32 can extend along a longitudinal direction D3 . The first channel 31 and the second channel 32 can be used to transport a heat-carrying fluid.

磁性单元40可为一永久磁铁、一超导磁铁、或是一电磁圈。磁性单元40设置于热交换元件30的两相对侧。于本实施例中，热交换元件30位于磁性单元40之间。磁性单元40与热交换元件30沿一第二延伸方向D2排列。前述的第一延伸方向D1、第二延伸方向D2、以及纵向D3相互垂直。每一磁性单元40用以提供一磁场于热交换元件30，前述磁场的强度（magnitude of themagnetic field）可为时变(time-varying)和非均匀（non-uniform）。因此，当磁场施加于热交换元件30时，热交换元件30的热交换能力（heat exchangeability）可以被改变。The magnetic unit 40 can be a permanent magnet, a superconducting magnet, or an electromagnetic coil. The magnetic units 40 are disposed on two opposite sides of the heat exchange element 30 . In this embodiment, the heat exchange element 30 is located between the magnetic units 40 . The magnetic unit 40 and the heat exchange element 30 are arranged along a second extending direction D2. The aforementioned first extending direction D1 , second extending direction D2 , and longitudinal direction D3 are perpendicular to each other. Each magnetic unit 40 is used to provide a magnetic field to the heat exchange element 30, and the magnitude of the magnetic field can be time-varying and non-uniform. Therefore, when a magnetic field is applied to the heat exchange element 30, the heat exchangeability of the heat exchange element 30 may be changed.

如图2所示，于热交换元件30的截面S1上设有一第一截面区域Z1以及二第二截面区域Z2。第一流道31分布于第一截面区域Z1内、且第二流道32分别分布于第二截面区域Z2内。第一截面区域Z1以及第二截面区域Z2的面积可相同。第一截面区域Z1位于两第二截面区域Z2之间。于本实施例中，第一截面区域Z1以及两第二截面区域Z2可沿第一延伸方向D1排列。As shown in FIG. 2 , a first cross-sectional area Z1 and two second cross-sectional areas Z2 are provided on the cross-section S1 of the heat exchange element 30 . The first flow channels 31 are distributed in the first cross-sectional area Z1, and the second flow channels 32 are respectively distributed in the second cross-sectional area Z2. Areas of the first cross-sectional area Z1 and the second cross-sectional area Z2 may be the same. The first cross-sectional area Z1 is located between the two second cross-sectional areas Z2. In this embodiment, the first cross-sectional area Z1 and the two second cross-sectional areas Z2 can be arranged along the first extending direction D1.

由于第一截面区域Z1以及第二截面区域Z2的排列大致平行于磁性单元40，以及第一截面区域Z1邻近于磁性单元40的中央部位，第二截面区域Z2分别邻近于磁性单元40的两端，于第一截面区域Z1的磁场分别大于第二截面区域Z2的磁场。换句话说，施加于第一流道31的磁场的强度大于分别施加于第二流道32的磁场的强度。Since the arrangement of the first cross-sectional area Z1 and the second cross-sectional area Z2 is approximately parallel to the magnetic unit 40, and the first cross-sectional area Z1 is adjacent to the central part of the magnetic unit 40, the second cross-sectional area Z2 is adjacent to both ends of the magnetic unit 40, respectively. , the magnetic field in the first cross-sectional area Z1 is respectively larger than the magnetic field in the second cross-sectional area Z2. In other words, the intensity of the magnetic field applied to the first flow channel 31 is greater than the intensity of the magnetic fields respectively applied to the second flow channels 32 .

一般而言，较强的磁场强度会使得热交换元件30具有较强的热交换能力。由于第一流道31、第二流道32的截面积大小对应于热交换元件30内的磁场分布，因此当携热流体流经第一流道31、第二流道32时，热交换元件30的截面S1上不同点的温度梯度大致相同。Generally speaking, a stronger magnetic field strength will make the heat exchanging element 30 have a stronger heat exchanging capability. Since the cross-sectional areas of the first flow channel 31 and the second flow channel 32 correspond to the magnetic field distribution in the heat exchange element 30, when the heat-carrying fluid flows through the first flow channel 31 and the second flow channel 32, the heat exchange element 30 The temperature gradients at different points on the section S1 are approximately the same.

于本实施例中，第一流道31的截面S1大于第二流道32的截面S1，且第一截面区域Z1以及第二截面区域Z2的面积相同。由于热交换元件30的第一截面区域Z1具有较强的磁场，因此第一流道31的截面积大于第二流道32的截面积。In this embodiment, the cross-section S1 of the first flow channel 31 is larger than the cross-section S1 of the second flow channel 32 , and the first cross-sectional area Z1 and the second cross-sectional area Z2 have the same area. Since the first cross-sectional area Z1 of the heat exchange element 30 has a strong magnetic field, the cross-sectional area of the first channel 31 is larger than that of the second channel 32 .

当携热流体于第一流道31以及第二流道32内流动时，于第一流道31内的携热流体的流速大于第二流道32内的携热流体的流速。由于第二截面区域Z2的磁场强度较第一截面区域Z1的磁场强度弱，因此于第二截面区域Z2内的热交换元件30的热交换能力相对较差。然而，通过携热流体于第二流道32的较慢流速可使得第二截面区域Z2内的热交换元件30能对第二流道32内的携热流体进行较充足的热交换，进而使得第二截面区域Z2的温度梯度能大致与第一截面区域Z1的温度梯度相同。When the heat-carrying fluid flows in the first flow channel 31 and the second flow channel 32 , the flow velocity of the heat-carrying fluid in the first flow channel 31 is greater than the flow rate of the heat-carrying fluid in the second flow channel 32 . Since the magnetic field strength of the second cross-sectional area Z2 is weaker than that of the first cross-sectional area Z1, the heat exchange capability of the heat exchange element 30 in the second cross-sectional area Z2 is relatively poor. However, the slower flow rate of the heat-carrying fluid in the second flow channel 32 can enable the heat exchange element 30 in the second cross-sectional area Z2 to perform sufficient heat exchange on the heat-carrying fluid in the second flow channel 32, thereby enabling The temperature gradient of the second cross-sectional area Z2 can be approximately the same as the temperature gradient of the first cross-sectional area Z1.

图5为本发明的热磁交换装置2a的第二实施例的示意图。于本实施例中，热交换元件30a的第一截面区域Z1内具有多个第一流道31a，且第二截面区域Z2内具有至少一第二流道32a，于另一实施例中，第二流道32a可具有多个。每一热交换元件30a的第一流道31a以及第二流道32a的截面积相等。然而，于第一截面区域Z1内第一流道31a的数目多于第二截面区域Z2内第二流道32a的数目。换句话说，第一截面区域Z1内第一流道31a的总截面积大于第二截面区域Z2内第二流道32a的总截面积。然而，如图5所示，相邻两第一流道31a之间的距离小于相邻的第一流道31a与第二流道32a之间的距离。因此，第一截面区域Z1内第一流道31a的总截面积以及第二截面区域Z2内第二流道32a的总截面积对应于磁场的强度。FIG. 5 is a schematic diagram of a second embodiment of the thermomagnetic exchange device 2a of the present invention. In this embodiment, the heat exchange element 30a has a plurality of first flow channels 31a in the first cross-sectional area Z1, and at least one second flow channel 32a in the second cross-sectional area Z2. In another embodiment, the second There may be a plurality of flow paths 32a. The cross-sectional areas of the first channel 31a and the second channel 32a of each heat exchange element 30a are equal. However, the number of the first flow channels 31a in the first cross-sectional area Z1 is greater than the number of the second flow channels 32a in the second cross-sectional area Z2. In other words, the total cross-sectional area of the first channel 31a in the first cross-sectional area Z1 is greater than the total cross-sectional area of the second flow channel 32a in the second cross-sectional area Z2. However, as shown in FIG. 5 , the distance between two adjacent first flow channels 31 a is smaller than the distance between adjacent first flow channels 31 a and second flow channels 32 a. Therefore, the total cross-sectional area of the first flow channel 31a in the first cross-sectional area Z1 and the total cross-sectional area of the second flow channel 32a in the second cross-sectional area Z2 correspond to the strength of the magnetic field.

图6为本发明的热磁交换装置2b的第三实施例的分解示意图。热交换元件30b包括一热交换部33以及一热交换部34。热交换部33耦接于热交换部34。每一磁性单元40b包括一磁性部41以及一磁性部42。磁性部41耦接于磁性部42。FIG. 6 is an exploded schematic diagram of a third embodiment of the thermomagnetic exchange device 2b of the present invention. The heat exchange element 30b includes a heat exchange portion 33 and a heat exchange portion 34 . The heat exchange part 33 is coupled to the heat exchange part 34 . Each magnetic unit 40b includes a magnetic portion 41 and a magnetic portion 42 . The magnetic part 41 is coupled to the magnetic part 42 .

第一流道31包括一流道部311以及一流道部312。每一第二流道32包括一流道部321以及一流道部322。流道部311与流道部312相互连通，且流道部321与流道部322相互连通。The first channel 31 includes a channel portion 311 and a channel portion 312 . Each second channel 32 includes a channel portion 321 and a channel portion 322 . The flow channel portion 311 and the flow channel portion 312 communicate with each other, and the flow channel portion 321 and the flow channel portion 322 communicate with each other.

于本实施例中，磁性部41产生的磁场大于磁性部42产生的磁场。流道部311的截面积大于流道部312的截面积，且流道部321的截面积大于流道部322的截面积。因此，热交换部33的第一流道31、第二流道32的总截面积大于热交换部34的第一流道31、第二流道32的总截面积。换句话说，第一流道31、第二流道32的截面积大致对应于磁场的强度。因此，当携热流体流过第一流道31、第二流道32时，热交换元件30b的两端上的不同点的温度梯度大致相同。In this embodiment, the magnetic field generated by the magnetic part 41 is greater than the magnetic field generated by the magnetic part 42 . The cross-sectional area of the channel portion 311 is greater than that of the channel portion 312 , and the cross-sectional area of the channel portion 321 is greater than that of the channel portion 322 . Therefore, the total cross-sectional area of the first flow channel 31 and the second flow channel 32 of the heat exchange part 33 is greater than the total cross-sectional area of the first flow channel 31 and the second flow channel 32 of the heat exchange part 34 . In other words, the cross-sectional areas of the first flow channel 31 and the second flow channel 32 roughly correspond to the strength of the magnetic field. Therefore, when the heat-carrying fluid flows through the first flow channel 31 and the second flow channel 32, the temperature gradients at different points on both ends of the heat exchange element 30b are approximately the same.

综上所述，当携热流体流过流道时，热交换元件上不同点的温度梯度大致相同，进而使得热磁交换装置的热交换效率增加。To sum up, when the heat-carrying fluid flows through the flow channel, the temperature gradients at different points on the heat exchange element are approximately the same, thereby increasing the heat exchange efficiency of the thermomagnetic exchange device.

本发明虽以各种实施例揭露如上，然而其仅为范例参考而非用以限定本发明的范围，任何熟习此技艺者，在不脱离本发明的精神和范围内，当可做些许的更动与润饰。因此上述实施例并非用以限定本发明的范围，本发明的保护范围当视后附的权利要求范围所界定者为准。Although the present invention has been disclosed above with various embodiments, they are only exemplary references rather than limiting the scope of the present invention. Anyone skilled in the art can make some modifications without departing from the spirit and scope of the present invention. Move and retouch. Therefore, the above-mentioned embodiments are not intended to limit the scope of the present invention, and the protection scope of the present invention should be defined by the appended claims.

Claims (12)

1. a pyromagnetic switch is characterized in that, comprising:
One heat exchange elements has two ends and at least one in order to carry a runner of taking hot fluid; And
One magnet unit, be arranged at this heat exchange elements around, and provide a magnetic field in this heat exchange elements, wherein the intensity in this magnetic field is heterogeneous,
Wherein the sectional area size of this runner is corresponding to this magnetic field intensity, so that when this was taken hot fluid and flows through this runner, the thermograde of the difference on these two ends of this heat exchange elements was roughly the same.
2. pyromagnetic switch as claimed in claim 1 is characterized in that, this heat exchange elements is made of at least one thermal-magnetizing material.
3. pyromagnetic switch as claimed in claim 2, it is characterized in that this thermal-magnetizing material is the Mn-Fe-P-As alloy, the Mn-Fe-P-Si alloy, the Mn-Fe-P-Ge alloy, the Mn-As-Sb alloy, the Mn-Fe-Co-Ge alloy, the Mn-Ge-Sb alloy, the Mn-Ge-Si alloy, the La-Fe-Co-Si alloy, the La-Fe-Si-H alloy, the La-Na-Mn-O alloy, the La-K-Mn-O alloy, the La-Ca-Sr-Mn-O alloy, the La-Ca-Pb-Mn-O alloy, the La-Ca-Ba-Mn-O alloy, the Gd alloy, Gd-Si-Ge, the Gd-Yb alloy, the Gd-Si-Sb alloy, the Gd-Dy-Al-Co alloy, or Ni-Mn-Ga alloy.
4. pyromagnetic switch as claimed in claim 1 is characterized in that, this magnet unit is a permanent magnet, a superconducting magnet or an electromagnetic coil.
5. a pyromagnetic switch is characterized in that, comprising:
One heat exchange elements has a first flow and one second runner, takes hot fluid in order to carry one, and wherein this first flow has one first sectional area, and this second runner has one second sectional area, and this first sectional area is greater than this second sectional area; And
One magnet unit, be arranged at this heat exchange elements around, and provide a magnetic field in this heat exchange elements,
Wherein put on the intensity in magnetic field of this first flow greater than the intensity in the magnetic field that puts on this second runner.
6. pyromagnetic switch as claimed in claim 5 is characterized in that, this heat exchange elements is made of at least one thermal-magnetizing material.
7. pyromagnetic switch as claimed in claim 6, it is characterized in that this thermal-magnetizing material is the Mn-Fe-P-As alloy, the Mn-Fe-P-Si alloy, the Mn-Fe-P-Ge alloy, the Mn-As-Sb alloy, the Mn-Fe-Co-Ge alloy, the Mn-Ge-Sb alloy, the Mn-Ge-Si alloy, the La-Fe-Co-Si alloy, the La-Fe-Si-H alloy, the La-Na-Mn-O alloy, the La-K-Mn-O alloy, the La-Ca-Sr-Mn-O alloy, the La-Ca-Pb-Mn-O alloy, the La-Ca-Ba-Mn-O alloy, the Gd alloy, Gd-Si-Ge, the Gd-Yb alloy, the Gd-Si-Sb alloy, the Gd-Dy-Al-Co alloy, or Ni-Mn-Ga alloy.
8. pyromagnetic switch as claimed in claim 5 is characterized in that, this magnet unit is a permanent magnet, a superconducting magnet or an electromagnetic coil.
9. a pyromagnetic switch is characterized in that, comprising:
One heat exchange elements has a plurality of first flows and at least one second runner, takes hot fluid in order to carry one, and wherein the distance between the two adjacent described first flows is less than the distance between adjacent first flow and second runner; And
One magnet unit, be arranged at this heat exchange elements around, and provide a magnetic field in this heat exchange elements,
Wherein put on the intensity in magnetic field of each described first flow greater than the intensity in the magnetic field that puts on this second runner.
10. pyromagnetic switch as claimed in claim 9 is characterized in that, this heat exchange elements is made of at least one thermal-magnetizing material.
11. pyromagnetic switch as claimed in claim 10, it is characterized in that this thermal-magnetizing material is the Mn-Fe-P-As alloy, the Mn-Fe-P-Si alloy, the Mn-Fe-P-Ge alloy, the Mn-As-Sb alloy, the Mn-Fe-Co-Ge alloy, the Mn-Ge-Sb alloy, the Mn-Ge-Si alloy, the La-Fe-Co-Si alloy, the La-Fe-Si-H alloy, the La-Na-Mn-O alloy, the La-K-Mn-O alloy, the La-Ca-Sr-Mn-O alloy, the La-Ca-Pb-Mn-O alloy, the La-Ca-Ba-Mn-O alloy, the Gd alloy, Gd-Si-Ge, the Gd-Yb alloy, the Gd-Si-Sb alloy, the Gd-Dy-Al-Co alloy, or Ni-Mn-Ga alloy.
12. pyromagnetic switch as claimed in claim 9 is characterized in that, this magnet unit is a permanent magnet, a superconducting magnet or an electromagnetic coil.
CN201210389653.4A 2012-02-07 2012-10-15 Thermal Magnetic Exchange Device Expired - Fee Related CN103245124B (en)

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