CN103245124A - Thermo-magnetic exchanging device - Google Patents

Thermo-magnetic exchanging device Download PDF

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Publication number
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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CN
China
Prior art keywords
alloy
heat exchange
exchange elements
runner
magnetic field
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CN2012103896534A
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Chinese (zh)
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CN103245124B (en
Inventor
郭吉祥
吴调原
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Delta Optoelectronics Inc
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Delta Optoelectronics 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

A thermo-magnetic exchanging device includes a heat exchanging element and a magnet unit. The heat exchanging element has at least one channel to convey a heat-carrying fluid. The magnet unit is disposed around the heat exchanging element and provides a magnetic field to the heat exchanging element. The magnitude of the magnetic field is non-uniform. The cross-sectional area of the channel corresponds to the magnetic field so that temperature gradients at different points of the heat exchanging element are substantially the same when the heat-carrying fluid flows through the channel.

Description

Pyromagnetic switch
Technical field
The present invention relates generally to a kind of pyromagnetic switch, refers to that especially produce magnetic field in the pyromagnetic switch of the magnetic field units of heat exchange elements a kind of comprising.
Background technology
Generally speaking, the magnetic refrigerator is the Refrigeration Technique of high-effect and an environmental protection.The magnetic Refrigeration Technique has been utilized thermal-magnetizing material, and (magnetocaloric materials, thermo-magnetic effect MCM) is reached freeze cycle (refrigeration cycles).
As shown in Figure 1, existing pyromagnetic switch 1 comprises a heat exchange elements 10 and a magnet unit 20.Heat exchange elements 10 comprises a runner 11 and a plurality of runner 12.Runner 11 is between two runners 12.In this example, take flow of heated fluid and cross runner 11,12, and runner 11,12 sectional area equate that the distance between two adjacent fluid channels 11,12 is also identical.Magnet unit 20 produces magnetic field in heat exchange elements 10.Because magnetic field is heterogeneous, therefore the magnetic field in runner 11 is greater than the magnetic field in the runner 12, cause heat exchange elements 10 for take in the runner 11 rate of heat exchange between the hot fluid greater than heat exchange elements 10 for the rate of heat exchange of taking in the runner 12 between the hot fluid, and therefore the efficient of pyromagnetic switch 1 reduce.
Summary of the invention
In order to solve the disappearance of above-mentioned prior art, purpose of the present invention comprises a heat exchange elements and a magnet unit for a kind of pyromagnetic switch is provided.Heat exchange elements has at least one runner, and magnet unit produces a magnetic field in heat exchange elements.When taking flow of heated fluid through runner, (temperature gradient) is roughly the same for the thermograde of difference on the heat exchange elements.
To achieve the above object, the invention provides a kind of pyromagnetic switch, comprise a heat exchange elements and a magnet unit.Heat exchange elements has at least one in order to carry runner and two ends of taking hot fluid.Magnet unit be arranged at heat exchange elements around, and provide a magnetic field in heat exchange elements, wherein the intensity in magnetic field is heterogeneous.The sectional area size of runner is corresponding to magnetic field intensity, so that when taking flow of heated fluid and cross runner, the thermograde of the difference on the two ends of heat exchange elements is roughly the same.
To achieve the above object, the present invention provides a pyromagnetic switch in addition, comprises a heat exchange elements and a magnet unit.Heat exchange elements has a first flow and one second runner, takes hot fluid in order to carry one, and wherein first flow has one first sectional area, and second runner has one second sectional area, and first sectional area is greater than second sectional area.Magnet unit be arranged at heat exchange elements around, and provide a magnetic field in heat exchange elements.Put on the intensity in magnetic field of first flow greater than the intensity in the magnetic field that puts on second runner.
To achieve the above object, the present invention provides a pyromagnetic switch in addition, comprises a heat exchange elements and a magnet unit.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 first flows is less than the distance between adjacent first flow and second runner.Magnet unit be arranged at heat exchange elements around, and provide a magnetic field in heat exchange elements.Put on the intensity in magnetic field of each first flow greater than the intensity in the magnetic field that puts on second runner.
In sum, when taking flow of heated fluid and cross runner, the thermograde of difference is roughly the same on the heat exchange elements, and then makes the heat exchanger effectiveness of pyromagnetic switch increase.
Description of drawings
Fig. 1 is the schematic diagram of existing pyromagnetic switch;
Fig. 2 is the schematic diagram of first embodiment of pyromagnetic switch of the present invention;
Fig. 3 is the stereogram of first embodiment of heat exchange elements of the present invention;
Fig. 4 is the cutaway view of the A-A ' section of Fig. 3;
Fig. 5 is the schematic diagram of second embodiment of pyromagnetic switch of the present invention; And
Fig. 6 is the decomposing schematic representation of the 3rd embodiment of pyromagnetic switch of the present invention.
Wherein, description of reference numerals is as follows:
Pyromagnetic switch 1
Heat exchange elements 10
Runner 11,12
Magnet unit 20
Pyromagnetic switch 2,2a, 2b
Heat exchange elements 30,30a, 30b
First flow 31,31a,
Second runner 32,32a
Flow path portion 311,312,321,322
Heat exchange department 33,34
Magnet unit 40,40b
Magnetic portion 41,42
The first bearing of trend D1
The second bearing of trend D2
Vertical D3
Section S 1
The first cross section Z1
The second cross section Z2
The specific embodiment
Fig. 2 is the schematic diagram of first embodiment of pyromagnetic switch 2 of the present invention, and Fig. 3 is the stereogram of first embodiment of heat exchange elements 30 of the present invention, and Fig. 4 is the cutaway view of the A-A ' section of Fig. 3.Pyromagnetic switch (thermo-magnetic exchanging device) 2 comprises a heat exchange elements 30 and two magnet units 40.Heat exchange elements 30 can be a tubular structure.
The material that heat exchange elements 30 can be selected from the group that is made up of at least one thermal-magnetizing material (magnetocaloric material) is constituted.For example, aforementioned magneto-caloric material can comprise, but do not limited Mn-Fe-P-As alloy, Mn-Fe-P-Si alloy, Mn-Fe-P-Ge alloy, Mn-As-Sb alloy, 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.
Heat exchange elements 30 comprises a first flow 31 and 2 second runners 32, yet the number of first flow 31 and second runner 32 is not limited.In present embodiment, first flow 31 is between two second runners 32, and first flow 31 and second runner 32 can be arranged along one first bearing of trend D1.The aforesaid first bearing of trend D1 is parallel to a section S 1 of heat exchange elements 30.Heat exchange elements 30, first flow 31 and second runner 32 can extend along a vertical D3.First flow 31 and second runner 32 can be taken hot fluid (heat-carrying fluid) in order to carry one.
Magnet unit 40 can be a permanent magnet, a superconducting magnet or an electromagnetic coil.Magnet unit 40 is arranged at the two opposite sides of heat exchange elements 30.In present embodiment, heat exchange elements 30 is between magnet unit 40.Magnet unit 40 is arranged along one second bearing of trend D2 with heat exchange elements 30.The aforesaid first bearing of trend D1, the second bearing of trend D2 and vertical D3 are vertical mutually.Each magnet unit 40 is in order to provide a magnetic field in heat exchange elements 30, and the intensity of aforementioned magnetic field (magnitude of themagnetic field) becomes (time-varying) and non-homogeneous (non-uniform) when can be.Therefore, when magnetic field put on heat exchange elements 30, the heat-exchange capacity of heat exchange elements 30 (heat exchangeability) can be changed.
As shown in Figure 2, the section S 1 in heat exchange elements 30 is provided with one first cross section Z1 and 2 second cross section Z2.First flow 31 is distributed in the first cross section Z1 and second runner 32 is distributed in respectively in the second cross section Z2.The area of the first cross section Z1 and the second cross section Z2 can be identical.The first cross section Z1 is between two second cross section Z2.In present embodiment, the first cross section Z1 and two second cross section Z2 can arrange along the first bearing of trend D1.
Because the arrangement of the first cross section Z1 and the second cross section Z2 is roughly parallel to magnet unit 40, and first cross section Z1 be adjacent to the central part of magnet unit 40, the second cross section Z2 is respectively adjacent in the two ends of magnet unit 40, in the magnetic field of the first cross section Z1 respectively greater than the magnetic field of the second cross section Z2.In other words, put on the intensity in magnetic field of first flow 31 greater than the intensity in the magnetic field that puts on second runner 32 respectively.
Generally speaking, stronger magnetic field intensity can make heat exchange elements 30 have stronger heat-exchange capacity.Because the sectional area size of first flow 31, second runner 32 is corresponding to the Distribution of Magnetic Field in the heat exchange elements 30, therefore when taking flow of heated fluid through first flow 31, second runner 32, the thermograde of difference is roughly the same on the section S 1 of heat exchange elements 30.
In present embodiment, the section S 1 of first flow 31 is greater than the section S 1 of second runner 32, and the area of the first cross section Z1 and the second cross section Z2 is identical.Because the first cross section Z1 of heat exchange elements 30 has stronger magnetic field, so the sectional area of first flow 31 is greater than the sectional area of second runner 32.
When taking hot fluid and flow in first flow 31 and second runner 32, the flow velocity of taking hot fluid in first flow 31 is greater than the flow velocity of taking hot fluid in second runner 32.Because a little less than the magnetic field intensity of magnetic field intensity than the first cross section Z1 of the second cross section Z2, therefore the heat-exchange capacity of the heat exchange elements 30 in the second cross section Z2 is relatively poor relatively.Yet, by take hot fluid in second runner 32 can make that than slug flow speed the heat exchange elements 30 in the second cross section Z2 can be to taking hot fluid and carry out sufficient heat exchange in second runner 32, and then roughly the thermograde with the first cross section Z1 is identical to make the thermograde of the second cross section Z2.
Fig. 5 is the schematic diagram of second embodiment of pyromagnetic switch 2a of the present invention.In present embodiment, have a plurality of first flow 31a in the first cross section Z1 of heat exchange elements 30a, and have at least one second runner 32a in the second cross section Z2, in another embodiment, the second runner 32a can have a plurality of.The first flow 31a of each heat exchange elements 30a and the sectional area of the second runner 32a equate.Yet the number of first flow 31a is more than the number of the second runner 32a in the second cross section Z2 in the first cross section Z1.In other words, the total sectional area of the interior first flow 31a of the first cross section Z1 is greater than the total sectional area of the second runner 32a in the second cross section Z2.Yet as shown in Figure 5, the distance between the adjacent two first flow 31a is less than the distance between adjacent first flow 31a and the second runner 32a.Therefore, the total sectional area of the total sectional area of the interior first flow 31a of the first cross section Z1 and the interior second runner 32a of the second cross section Z2 is corresponding to the intensity in magnetic field.
Fig. 6 is the decomposing schematic representation of the 3rd embodiment of pyromagnetic switch 2b of the present invention.Heat exchange elements 30b comprises a heat exchange department 33 and a heat exchange department 34.Heat exchange department 33 is coupled to heat exchange department 34.Each magnet unit 40b comprises a magnetic portion 41 and a magnetic portion 42.Magnetic portion 41 is coupled to magnetic portion 42.
First flow 31 comprises a flow path portion 311 and a flow path portion 312.Each second runner 32 comprises a flow path portion 321 and a flow path portion 322.Flow path portion 311 is interconnected with flow path portion 312, and flow path portion 321 is interconnected with flow path portion 322.
In present embodiment, the magnetic field that the magnetic field that magnetic portion 41 produces produces greater than magnetic portion 42.The sectional area of flow path portion 311 is greater than the sectional area of flow path portion 312, and the sectional area of flow path portion 321 is greater than the sectional area of flow path portion 322.Therefore, the total sectional area of the first flow 31 of heat exchange department 33, second runner 32 is greater than the first flow 31 of heat exchange department 34, the total sectional area of second runner 32.In other words, the sectional area of first flow 31, second runner 32 is roughly corresponding to the intensity in magnetic field.Therefore, when taking hot fluid and flow through first flow 31, second runner 32, the thermograde of the difference on the two ends of heat exchange elements 30b is roughly the same.
In sum, when taking flow of heated fluid and cross runner, the thermograde of difference is roughly the same on the heat exchange elements, and then makes the heat exchanger effectiveness of pyromagnetic switch increase.
Though the present invention discloses as above with various embodiment, however its only for example with reference to but not in order to limiting scope of the present invention, anyly have the knack of this skill person, without departing from the spirit and scope of the present invention, when doing a little change and retouching.Therefore above-described embodiment is not in order to limiting scope of the present invention, and protection scope of the present invention is as the criterion when looking the accompanying Claim scope person of defining.

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 Thermo-magnetic exchanging device Expired - Fee Related CN103245124B (en)

Applications Claiming Priority (2)

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US13/367,906 2012-02-07
US13/367,906 US20130199754A1 (en) 2012-02-07 2012-02-07 Thermo-magnetic exchanging device

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CN103245124B CN103245124B (en) 2015-06-24

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FR2994252B1 (en) * 2012-08-01 2014-08-08 Cooltech Applications MONOBLOC PIECE COMPRISING A MAGNETOCALORIC MATERIAL NOT COMPRISING AN ALLOY COMPRISING IRON AND SILICON AND A LANTHANIDE, AND A THERMIC GENERATOR COMPRISING SAID PIECE
FR2994253B1 (en) * 2012-08-01 2018-10-05 Cooltech Applications MONOBLOC PIECE COMPRISING A MAGNETOCALORIC MATERIAL COMPRISING AN ALLOY COMPRISING IRON AND SILICON AND AT LEAST ONE LANTHANIDE, AND PROCESS FOR PRODUCING SAID MONOBLOC PIECE
DE102015108954A1 (en) * 2015-06-08 2016-12-08 Eberspächer Climate Control Systems GmbH & Co. KG Temperature control unit, in particular Fahrzeugtemperiergerät
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JP6884296B1 (en) * 2020-07-17 2021-06-09 三菱電機株式会社 Magnetic refrigerator

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DE102012110465A1 (en) 2013-08-08
US20130199754A1 (en) 2013-08-08

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