WO2021214836A1 - 磁気冷凍装置および冷凍サイクル装置 - Google Patents

磁気冷凍装置および冷凍サイクル装置 Download PDF

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Publication number
WO2021214836A1
WO2021214836A1 PCT/JP2020/017078 JP2020017078W WO2021214836A1 WO 2021214836 A1 WO2021214836 A1 WO 2021214836A1 JP 2020017078 W JP2020017078 W JP 2020017078W WO 2021214836 A1 WO2021214836 A1 WO 2021214836A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic field
field generating
generating member
calorific value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/017078
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English (en)
French (fr)
Japanese (ja)
Inventor
俊 殿岡
敦 小笠原
松田　哲也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to EP20932116.5A priority Critical patent/EP4141349A4/en
Priority to PCT/JP2020/017078 priority patent/WO2021214836A1/ja
Priority to CN202080099771.4A priority patent/CN115427742B/zh
Priority to US17/799,277 priority patent/US12366388B2/en
Priority to JP2022516490A priority patent/JP7309052B2/ja
Publication of WO2021214836A1 publication Critical patent/WO2021214836A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F25B2321/0021—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a static fixed magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/002—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects
    • F25B2321/0022—Details of machines, plants or systems, using electric or magnetic effects by using magneto-caloric effects with a rotating or otherwise moving magnet
    • 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]

Definitions

  • a state in which the first magnetic field generating member 31 as the magnetic field generating unit 30 is arranged at the first position adjacent to the magnetic calorific value material 20 is defined as the first state.
  • the first magnetic field generating member 31 is arranged at the first position, and a magnetic field is applied to the magnetic calorific value material 20.
  • any member can be used as long as it can generate a magnetic field, and for example, a permanent magnet or an electromagnet is used.
  • valve members 41 and 42 may be as shown in FIG. Specifically, the magnetic body 41a is arranged at the end of the main body 41b in the horizontal direction, and even if the dimensions of the main body 41b in the thickness direction and the dimensions of the magnetic body 41a in the thickness direction are the same. good.
  • the valve member 42 may have the same configuration as the valve member 41.
  • the timing at which the first portion 31a of the first magnetic field generating member 31 overlaps with the magnetic calorific value material 20 and the first magnetic field The timing at which the second portion 31b of the generating member 31 overlaps with the magnetic bodies 41a and 42a of the valve members 41 and 42 can be made different. That is, in FIG. 4, the first portion 31a overlaps the magnetic calorific material 20 in a plan view, but the second portion 31b does not yet overlap the magnetic bodies 41a and 42a in a plan view. That is, in FIG.
  • the refrigerant when a magnetic field is applied to the magnetic heat quantity material 20 as shown in FIG. 1 and the magnetic heat quantity material 20 generates heat, the refrigerant is passed through the first pipe 61 as shown by an arrow 51 in FIG. It flows from right to left.
  • the refrigerant is heated by the heat-generating magnetic heat material 20.
  • the heated refrigerant carries heat to a heat exchanger (high temperature part heat exchanger) connected to the second piping portion 15 (heats another medium).
  • a reverse magnetic calorific value material such as NimnSn may be used as the magnetic calorific value material 20.
  • the magnetic calorific material 20 absorbs heat in the process of applying a magnetic field to the magnetic calorific material 20.
  • the magnetic calorific material 20 generates heat in the process of extinguishing the magnetic field applied to the magnetic calorific material 20. Therefore, the refrigerant cooled by the endothermic heat-absorbing material (magnetic heat-carrying material 20) flows in the direction indicated by the arrow 51 in FIG. Further, in the direction indicated by the arrow 51 in FIG. 2, the refrigerant heated by the heat-generating reverse magnetic heat material (magnetic heat material 20) flows.
  • the first pipe 61 and the second pipe 62 are arranged so as to be arranged in the vertical direction, but the direction in which the first pipe 61 and the second pipe 62 are arranged is another direction (for example, it may be a horizontal direction or a direction inclined with respect to the vertical direction).
  • the first magnetic field generating member 31 and the valve members 41, 42 are configured so that the direction of the force applied when the magnetic field is applied to the valve members 41, 42 is downward in FIG. 1, and the direction of the force applied by the moving member 43. If the moving member 43 is configured so as to face upward in FIG. 1, the arrangement of the first pipe 61 and the second pipe 62 may be reversed.
  • valve members 41 and 42 containing the magnetic material move between the first connecting portion 63 and the second connecting portion 64 by the magnetic field generated by the first magnetic field generating member 31, thereby causing the first state and the second state. Can be easily switched between.
  • the magnetic refrigeration device 100 further includes a position changing member 33 for moving the first magnetic field generating member 31.
  • the position changing member 33 places the first magnetic field generating member 31 between, for example, the first position shown in FIG. 9 and the second position shown in FIG. 8 along the second direction intersecting the first direction indicated by the arrow 81. Move with.
  • the second position is a position farther from the magnetic calorific value material 20 than the first position.
  • the first magnetic field generating member 31 includes a first portion 31a and a second portion 31b.
  • the first portion 31a faces the magnetic calorific value material 20 when the first magnetic field generating member 31 is arranged at the first position.
  • the second portion 31b faces the valve members 41 and 42 when the first magnetic field generating member 31 is arranged at the first position.
  • the length L1 of the first portion 31a along the second direction is different from the length L2 of the second portion 31b along the second direction.
  • the magnetic refrigeration device 100 further includes a position changing member 33 for moving the first magnetic field generating member 31.
  • the position changing member 33 moves the first magnetic field generating member 31 between the first position and the second position along the second direction intersecting the first direction.
  • the second position is a position farther from the magnetic calorific value material 20 than the first position.
  • the first magnetic field generating member 31 includes a first portion 31a and a second portion 31b.
  • the first portion 31a faces the magnetic calorific value material 20 when the first magnetic field generating member 31 is arranged at the first position.
  • the second portion 31b faces the valve members 41 and 42 when the first magnetic field generating member 31 is arranged at the first position.
  • the valve members 41 and 42 include main body portions 41b and 42b.
  • the magnetic field generating unit 30 includes a first magnetic field generating member 31 and a second magnetic field generating member 32.
  • the first magnetic field generating member 31 and the second magnetic field generating member 32 are permanent magnets, respectively.
  • the first magnetic field generating member 31 and the second magnetic field generating member 32 can be arranged so as to sandwich the magnetic calorific value material 20 and the switching portion 40.
  • the shapes of the first magnetic field generating member 31 and the second magnetic field generating member 32 are different when viewed from the first direction indicated by the arrow 81.
  • the first magnetic field generating member 31 has a size that covers the magnetic calorific value material 20 and the switching portion 40 when viewed from the first direction indicated by the arrow 81.
  • the second magnetic field generating member 32 overlaps with the magnetic calorific value material 20 when viewed from the first direction, but does not overlap with the switching portion 40. From a different point of view, the size of the first magnetic field generating member 31 when viewed from the first direction is larger than the size of the second magnetic field generating member 32.
  • the shape of the first magnetic field generating member 31 and the shape of the second magnetic field generating member 32 are asymmetric.
  • the magnetic field generated by the first magnetic field generating member 31 is a valve member. It acts directly on 41 and 42.
  • the magnetic field generated by the second magnetic field generating member 32 does not significantly affect the valve members 41 and 42.
  • the first magnetic field generating member 31 and the second magnetic field generating member 32 are connected to the position changing member 33.
  • the position changing member 33 includes a rotating spindle, a motor connected to the rotating spindle, and a connecting portion for connecting the first magnetic field generating member 31 and the second magnetic field generating member 32 to the rotating spindle.
  • the configuration of the position changing member 33 is not limited to the configuration described above, and other configurations may be adopted.
  • an actuator that linearly reciprocates the first magnetic field generating member 31 and the second magnetic field generating member 32 may be used as the position changing member 33.
  • valve members 41 and 42 are moved as shown in FIGS. 10 and 11 depending on whether or not the magnetic field generated by the first magnetic field generating member 31 is applied. Specifically, in the state shown in FIG. 10 in which the first magnetic field generating member 31 is arranged at the first position, the north pole of the first magnetic field generating member 31 is arranged so as to face the magnetic calorific value material 20. Further, at this time, the S pole of the first magnetic field generating member 31 is arranged on the side opposite to the magnetic calorific value material 20 side in the first magnetic field generating member 31. Further, as shown in FIG.
  • the valve members 41 and 42 are separated from the first magnetic field generating member 31 by the moving member 43. It is moved to the first connection portion 63, which is a relatively distant region.
  • the moving member 43 is configured to move the valve members 41 and 42 to the upper side (second connecting portion 64 side).
  • a moving member 43 such as a spring may be arranged between the valve members 41 and 42 and the bottom surface of the first connecting portion 63.
  • the valve members 41 and 42 are connected to the first connecting portion by the magnetic field generated by the first magnetic field generating member 31. It is arranged at 63.
  • the magnetic field generating unit 30 includes a second magnetic field generating member 32 in addition to the first magnetic field generating member 31.
  • the second magnetic field generating member 32 faces the first magnetic field generating member 31 via the magnetic calorific value material 20 in the first state shown in FIG.
  • valve members 41 and 42 are attracted to the first magnetic field generating member 31 side by the action of the magnetic field by the first magnetic field generating member 31. As a result, the valve members 41 and 42 are arranged on the upper side (second connection portion 64 side).
  • the valve members 41 and 42 are on the side of the first magnetic field generating member 31. It will not be sucked. Therefore, the valve members 41 and 42 move from the second connecting portion 64 to the lower side (first connecting portion 63 side) due to gravity. As a result, the valve members 41 and 42 are arranged in the first connecting portion 63 as shown in FIG.
  • the direction in which the first connection portion 63 and the second connection portion 64 are arranged and the first direction indicated by the arrow 81 is the vertical direction. Therefore, gravity can be used when the valve members 41 and 42 are moved from the second connecting portion 64 to the lower first connecting portion 63.
  • the switching portion 40 includes the valve members 41 and 42, and does not include the moving member 43 (see FIG. 2). Therefore, the device configuration of the magnetic refrigeration device 100 can be further simplified.
  • Embodiment 4. ⁇ Structure of magnetic refrigerator> 14 and 15 are schematic cross-sectional views of the magnetic refrigeration apparatus according to the fourth embodiment.
  • FIG. 14 shows the first state of the magnetic refrigeration device 100.
  • FIG. 15 shows the second state of the magnetic refrigeration device 100.
  • the magnetic refrigeration apparatus 100 shown in FIGS. 14 and 15 basically has the same configuration as the magnetic refrigeration apparatus 100 shown in FIGS. 10 and 11, but the configuration of the switching unit 40 is shown in FIGS. 10 and 11. It is different from the magnetic refrigeration device 100 shown.
  • the valve members 41 and 42 are made of the same material as the magnetic calorific value material 20. Since the magnetic calorific value material 20 is also a magnetic material and receives a physical force in response to a magnetic field, it can perform the same operation as the valve members 41 and 42 of the magnetic refrigeration apparatus 100 shown in FIGS. 10 and 11. ..
  • Embodiment 5 ⁇ Structure of magnetic refrigerator> 16 and 17 are schematic cross-sectional views of the magnetic refrigeration apparatus according to the fifth embodiment.
  • FIG. 16 shows the first state of the magnetic refrigeration device 100.
  • FIG. 17 shows the second state of the magnetic refrigeration device 100.
  • the magnetic refrigeration apparatus 100 shown in FIGS. 16 and 17 basically has the same configuration as the magnetic refrigeration apparatus 100 shown in FIGS. 10 and 11, but the configuration of the magnetic field generating unit 30 is shown in FIGS. 10 and 11. It is different from the magnetic refrigeration device 100 shown in 1.
  • the magnetic field generating unit 30 includes only the first magnetic field generating member 31.
  • the magnetic field generating unit 30 has only the first magnetic field generating member 31 located above the magnetic calorific value material 20 as described above, the magnetic field is applied / extinguished to the valve members 41 and 42 and the magnetic calorific value material 20. be able to.
  • the magnetic field generating unit 30 includes only the first magnetic field generating member 31.
  • the first magnetic field generating member 31 applies a magnetic field to the magnetic heat quantity material 20 in a state of being arranged at the first position adjacent to the magnetic heat quantity material 20.
  • the first pipe 61 is connected to the magnetic calorific value material 20 at the first connection portion 63.
  • the second pipe 62 is connected to the magnetic heat quantity material 20 at the second connection portion 64.
  • the first connection portion 63 and the second connection portion 64 are the magnetic heat quantity material 20 and the first magnetic field generating member 31 in the first state.
  • the switching unit 40 includes valve members 41 and 42.
  • the valve members 41 and 42 are between the first connecting portion 63 and the second connecting portion 64 so as to close the second connecting portion 64 in the first state and the first connecting portion 63 in the second state. Can be moved.
  • the valve members 41 and 42 contain a magnetic material.
  • the magnetic field can be applied / extinguished to the magnetic calorific value material 20 and the valve members 41 and 42 only by the first magnetic field generating member 31 alone. Therefore, the configuration of the magnetic refrigeration device 100 can be simplified.
  • FIG. 18 is a schematic cross-sectional view of the magnetic refrigeration apparatus according to the sixth embodiment.
  • FIG. 19 is a schematic partial plan view of the magnetic refrigeration apparatus shown in FIG.
  • FIG. 19 is a schematic partial plan view seen from the direction along the arrow 55 of FIG.
  • FIG. 20 is a schematic cross-sectional view of the magnetic refrigeration apparatus according to the sixth embodiment.
  • FIG. 21 is a schematic partial plan view of the magnetic refrigeration apparatus shown in FIG.
  • FIG. 21 is a schematic partial plan view seen from the direction along the arrow 55 of FIG. 18 and 19 show the first state of the magnetic refrigerator 100.
  • 20 and 21 show the second state of the magnetic refrigerator 100.
  • the magnetic refrigeration device 100 shown in FIGS. 18 to 21 basically has the same configuration as the magnetic refrigeration device 100 shown in FIGS. 10 and 11, but has a switching unit 40, a first pipe 61, and a second pipe.
  • the configuration of 62 and the arrangement of the magnetic calorific value material 20 are different from those of the magnetic refrigeration apparatus 100 shown in FIGS. 10 and 11.
  • the direction in which the first connection portion 63 and the second connection portion 64 intersect with respect to the first direction in FIG. 18 with respect to the first direction. Arranged so as to line up along the direction orthogonal to each other.
  • the first direction is the direction in which the magnetic calorific value material 20 and the first magnetic field generating member 31 are lined up in the first state shown in FIGS. 18 and 19, and is the direction indicated by the arrow 81.
  • the direction in which the first connecting portion 63 and the second connecting portion 64 are lined up is not limited to the direction orthogonal to the first direction described above, and for example, the angle at which the first connecting portion 63 and the second connecting portion 64 intersect with respect to the first direction is 80 ° or more and 100 ° or less. It may be in the direction of the range.
  • the first magnetic field generating member 31 and the second magnetic field generating member 32 have such that the magnetic flux density in the second connecting portion 64 is larger than the magnetic flux density in the first connecting portion 63.
  • Form a magnetic field Specifically, when viewed from the direction indicated by the arrow 55 in FIG. 18, the second connecting portion 64 is arranged at a position closer to the center of the first magnetic field generating member 31 than the first connecting portion 63. Further, when viewed from the direction indicated by the arrow 55 in FIG. 18, the second connecting portion 64 is arranged at a position closer to the center of the second magnetic field generating member 32 than the first connecting portion 63.
  • the valve members 41 and 42 of the switching portion 40 include a magnetic material.
  • the valve members 41 and 42 are moved toward the region having the highest magnetic flux density of the magnetic field by the magnetic field generating unit 30. This is because the first magnetic field generating member 31 and the second magnetic field generating member 32 form a magnetic field gradient in which the magnetic flux density gradually decreases from the center to the outer peripheral portion in a plan view. As a result, the valve members 41 and 42 close the second connecting portion 64.
  • valve members 41 and 42 are moved by the moving member 43.
  • the valve members 41 and 42 move to the first connecting portion 63 and close the first connecting portion 63.
  • the valve members 41 and 42 can move in the direction intersecting the first direction indicated by the arrow 81. That is, the valve members 41 and 42 can move between the first connecting portion 63 and the second connecting portion 64.
  • the magnetic field generating unit 30 includes a first magnetic field generating member 31 and a second magnetic field generating member 32.
  • the first magnetic field generating member 31 applies a magnetic field to the magnetic heat quantity material 20 in a state of being arranged at the first position adjacent to the magnetic heat quantity material 20.
  • the second magnetic field generating member 32 faces the first magnetic field generating member 31 via the magnetic calorific value material 20.
  • the first pipe 61 is connected to the magnetic calorific value material 20 at the first connection portion 63.
  • the second pipe 62 is connected to the magnetic calorific value material 20 at the second connecting portion 64.
  • the first connecting portion 63 and the second connecting portion 64 are arranged so as to be arranged along a direction intersecting the first direction indicated by the arrow 81 in which the magnetic calorific value material and the first magnetic field generating member are arranged in the first state. Will be done.
  • the first magnetic field generating member 31 and the second magnetic field generating member 32 form a magnetic field such that the magnetic flux density in the second connecting portion 64 is larger than the magnetic flux density in the first connecting portion 63.
  • the switching unit 40 includes valve members 41 and 42.
  • the valve members 41 and 42 are between the first connecting portion 63 and the second connecting portion 64 so as to close the second connecting portion 64 in the first state and the first connecting portion 63 in the second state. Can be moved.
  • the valve members 41 and 42 contain a magnetic material.
  • Embodiment 7 are schematic cross-sectional views of the magnetic refrigeration apparatus according to the seventh embodiment.
  • FIG. 22 shows the first state of the magnetic refrigeration device 100.
  • FIG. 23 shows the second state of the magnetic refrigeration device 100.
  • the magnetic refrigeration apparatus 100 shown in FIGS. 22 and 23 basically has the same configuration as the magnetic refrigeration apparatus 100 shown in FIGS. 10 and 11, but the configuration of the magnetic field generating unit 30 is shown in FIGS. 10 and 11. It is different from the magnetic refrigeration device 100 shown in 1.
  • the magnetic field generating unit 30 is composed of electromagnets 34 and 35.
  • the magnetic field generation unit 30 includes a support member 36 that supports the electromagnets 34 and 35 as the first magnetic field generation member 31 and the second magnetic field generation member 32.
  • the support member 36 supports the electromagnet 34 as the first magnetic field generating member 31 in a state of being arranged at a position overlapping the magnetic calorific value material 20 when viewed from the direction indicated by the arrow 81.
  • the electromagnet 35 is supported by the support member 36 at a position facing the electromagnet 34 with the magnetic calorific value material 20 sandwiched between them.
  • the electromagnets 34 and 35 can control the generation and extinction of the magnetic field by turning the current on and off. Therefore, the positions of the electromagnets 34 and 35 with respect to the magnetic calorific value material 20 do not have to be changed.
  • the electromagnet 34 has a sufficient size so as to surround a region overlapping the magnetic calorific value material 20 and the valve members 41 and 42 when viewed from the direction indicated by the arrow 81. Further, the size of the electromagnet 34 is larger than the size of the electromagnet 35 when viewed from the direction indicated by the arrow 81.
  • the electromagnet 35 is arranged in a region overlapping the magnetic calorific value material 20 when viewed from the direction indicated by the arrow 81. That is, the electromagnet 35 is arranged at a position where it does not overlap with the valve members 41 and 42 when viewed from the direction indicated by the arrow 81.
  • a current is passed through the electromagnets 34 and 35 in the direction indicated by the arrow 57.
  • the direction of the magnetic field lines is the direction toward the magnetic calorific value material 20 side. That is, the electromagnet 34 forms a magnetic field similar to that of a permanent magnet in which the north pole is arranged on the magnetic calorific value material 20 side.
  • the valve members 41 and 42 are attracted to the electromagnet 34 side by the magnetic field.
  • a magnetic field applied to the magnetic calorific value material 20 is formed by passing an electric current in the direction indicated by the arrow 57.
  • the influence of the magnetic field formed by the electromagnet 35 on the valve members 41 and 42 is smaller than the influence of the magnetic field formed by the electromagnet 34 on the valve members 41 and 42.
  • the first magnetic field generating member 31 includes an electromagnet 34.
  • the generation / disappearance of the magnetic field by the first magnetic field generating member 31 can be switched by turning on / off the current with respect to the electromagnet 34. Therefore, it is not necessary to move the electromagnet 34 relative to the magnetic calorific value material 20. As a result, a mechanism for moving the electromagnet 34 to the magnetic refrigeration device 100 becomes unnecessary, so that the device configuration of the magnetic refrigeration device 100 can be simplified.
  • the valve members 41 and 42 are moved according to how a current flows through the electromagnet included in the first magnetic field generating member 31.
  • the same effect as that of the magnetic refrigeration apparatus 100 shown in FIGS. 1 to 3 can be obtained, which is a configuration in which the permanent magnet is moved relative to the magnetic calorific value material 20 and the valve members 41 and 42.
  • Embodiment 8 ⁇ Configuration and operation of magnetic refrigerator> 24, 25 and 26 are schematic cross-sectional views of the magnetic refrigeration apparatus according to the eighth embodiment.
  • FIG. 27 is a graph showing the time change of the current flowing through the magnetic field generating portion of the magnetic refrigeration apparatus according to the eighth embodiment.
  • FIG. 24 shows the first state of the magnetic refrigeration device 100.
  • 25 and 26 show the second state of the magnetic refrigerator 100.
  • the magnetic refrigeration device 100 shown in FIGS. 24 to 26 basically has the same configuration as the magnetic refrigeration device 100 shown in FIGS. 22 and 23, but the arrangement of the first pipe 61 and the second pipe 62 and the arrangement of the second pipe 62 and The configuration of the switching unit 40 is different from that of the magnetic refrigeration device 100 shown in FIGS. 22 and 23.
  • the first pipe 61 is arranged on the side (upper side) closer to the electromagnet 34 as the first magnetic field generating member 31 than the second pipe 62. .. That is, the first connection portion 63 is arranged above the second connection portion 64 (the side closer to the electromagnet 34).
  • the switching unit 40 has a positioning mechanism for positioning the valve members 41 and 42 at the first connecting unit 63 in a state where no magnetic field is applied. Any configuration can be adopted for the positioning mechanism, but elastic members such as springs arranged under the valve members 41 and 42 may be used, for example. The elastic member presses the valve members 41 and 42 toward the electromagnet 34 side.
  • FIG. 27 The horizontal axis of FIG. 27 represents time, and the vertical axis represents the value of the current flowing through the electromagnet 34.
  • an electric current is passed through the electromagnet 34 in the direction indicated by the arrow 56.
  • the lower side of the electromagnet 34 (the side of the magnetic calorific value material 20) is the S pole.
  • the valve members 41 and 42 are permanent magnets having an S pole on the upper side (electromagnet 34 side). Therefore, as shown in FIG.
  • the valve members 41 and 42 are arranged in a region (second connection portion 64) relatively distant from the electromagnet 34 by receiving a force (repulsive force) from the magnetic field formed by the electromagnet 34. Will be done.
  • the refrigerant is supplied to the magnetic calorific value material 20 from the first pipe portion 14 of the first pipe 61.
  • the refrigerant heated by the magnetic calorific value material 20 is discharged to the second piping portion 15.
  • the state shown in FIG. 24 corresponds to the period A from the origin to the time point t1 in FIG. 27.
  • a current is passed through the electromagnet 34 in the direction indicated by the arrow 57, which is the opposite direction to the case of FIG. 24.
  • the current value at this time is lower than the current value in the case shown in FIG. 24.
  • the lower side of the electromagnet 34 is the north pole.
  • the S poles of the valve members 41 and 42 are attracted to the electromagnet 34.
  • the valve members 41 and 42 move from the lower side (second connection part 64) to the upper side (first connection part 63).
  • the step of passing an electric current through the electromagnet 34 to move the valve members 41 and 42 corresponds to the period B from the time point t1 to the time point t2 in FIG. 27.
  • the current value flowing through the electromagnet 34 is set to zero.
  • the magnetic field generated by the electromagnet 34 disappears.
  • the force caused by the magnetic field on the valve members 41 and 42 disappears, but the valve members 41 and 42 maintain the state of being positioned at the first connecting portion 63 by the action of the positioning mechanism described above.
  • the second pipe 62 supplies the refrigerant to the magnetic calorific value material 20.
  • the refrigerant is cooled by the magnetic calorific value material 20.
  • Such a process shown in FIG. 26 corresponds to the period C from the time point t2 to the time point t3 in FIG. 27.
  • a current may be passed through the electromagnet 35 as well as the electromagnet 34.
  • Embodiment 9. ⁇ Configuration of refrigeration cycle equipment> 28 and 29 are schematic views showing the refrigeration cycle apparatus according to the ninth embodiment.
  • FIG. 28 shows a case where the magnetic refrigeration device 100 constituting the refrigeration cycle device 200 is in the first state.
  • FIG. 29 shows a case where the magnetic refrigeration device 100 constituting the refrigeration cycle device 200 is in the second state. Note that the magnetic field generating section 30 is not shown in FIGS. 28 and 29.
  • the refrigeration cycle device 200 shown in FIGS. 28 and 29 mainly includes the magnetic refrigeration device 100, a first heat exchanger 71, a second heat exchanger 72, and pumps 91 and 92.
  • the first heat exchanger 71 is a high temperature part heat exchanger.
  • the second heat exchanger 72 is a low temperature heat exchanger.
  • the first pipe 61 includes a first pipe portion 14 and a second pipe portion 15.
  • the first piping portion 14 supplies a refrigerant to the magnetic calorific value material 20.
  • the second piping portion 15 takes out the supplied refrigerant from the magnetic calorific value material 20.
  • the second pipe 62 includes a third pipe portion 13 and a fourth pipe portion 12.
  • the third piping portion 13 supplies a refrigerant to the magnetic calorific value material 20.
  • the fourth piping portion 12 takes out the supplied refrigerant from the magnetic calorific value material 20.
  • the first heat exchanger 71 is connected to the second piping portion 15 and the third piping portion 13.
  • the second heat exchanger 72 is connected to the fourth piping portion 12 and the first piping portion 14.
  • the magnetic calorific value material 20 the second piping portion 15, the first heat exchanger 71, the pump 92, the third piping portion 13, the magnetic calorific value material 20, and the fourth piping portion 12.
  • the second heat exchanger 72, the pump 91, the first piping portion 14, the magnetic calorific value material 20, and the refrigerant flow in a closed loop.
  • the magnetic refrigeration apparatus 100 is in the first state shown in FIG.
  • the magnetic refrigeration apparatus 100 is in the second state shown in FIG. 11 and the like, and no magnetic field is applied to the magnetic calorific value material 20.
  • FIGS. 28 and 29 the configuration of any of the magnetic refrigeration apparatus 100 shown in the first to eighth embodiments can be adopted.
  • the refrigerant whose temperature has dropped in the first heat exchanger 71 is supplied to the magnetic calorific value material 20 by the pump 92 via the third piping portion 13.
  • the refrigerant is cooled by the magnetic heat quantity material 20.
  • the cooled refrigerant is transferred from the fourth piping portion 12 to the second heat exchanger 72.
  • the refrigerant absorbs heat from the outside of the second heat exchanger 72. That is, the second heat exchanger 72 cools the external medium. Further, the temperature of the refrigerant rises in the second heat exchanger 72.
  • the refrigerant discharged from the second heat exchanger 72 is supplied to the magnetic calorific value material 20 by the pump 91 via the first piping portion 14 in the first state shown in FIG. 28.
  • the refrigeration cycle device 200 includes the magnetic refrigeration device 100, a first heat exchanger 71, and a second heat exchanger 72.
  • the first pipe 61 includes a first pipe portion 14 and a second pipe portion 15.
  • the first piping portion 14 supplies a refrigerant to the magnetic calorific value material 20.
  • the second piping portion 15 takes out the supplied refrigerant from the magnetic calorific value material 20.
  • the second pipe 62 includes a third pipe portion 13 and a fourth pipe portion 12.
  • the third piping portion 13 supplies a refrigerant to the magnetic calorific value material 20.
  • the fourth piping portion 12 takes out the supplied refrigerant from the magnetic calorific value material 20.
  • the first heat exchanger 71 is connected to the second piping portion 15.
  • the first heat exchanger 71 is connected to the third piping portion 13.
  • the second heat exchanger 72 is connected to the fourth piping portion 12.
  • the second heat exchanger 72 is connected to the first piping portion 14.
  • the first heat is repeated by repeating the first state in which the magnetic field is applied to the magnetic heat material 20 and the second state in which the magnetic field applied to the magnetic heat material 20 disappears.
  • the external medium can be heated in the exchanger 71, and the external medium can be cooled in the second heat exchanger 72.
  • the valve members 41 and 42 can be moved by utilizing the magnetic field applied to the magnetic calorific value material 20. Therefore, the device configuration of the refrigeration cycle device 200 can be simplified as compared with the case where another drive device or control device is used to move the valve members 41 and 42. As a result, it is possible to suppress the increase in size, complexity and cost of the refrigeration cycle apparatus 200.
  • Embodiment 10 ⁇ Configuration of refrigeration cycle equipment> 30 and 31 are schematic views showing the refrigeration cycle apparatus according to the tenth embodiment.
  • FIG. 30 shows a case where the magnetic refrigeration device 100 constituting the refrigeration cycle device 200 is in the first state.
  • FIG. 31 shows a case where the magnetic refrigeration device 100 constituting the refrigeration cycle device 200 is in the second state. Note that the magnetic field generating section 30 is not shown in FIGS. 30 and 31.
  • the magnetic calorific material 20 absorbs heat as the magnetic field disappears, so that the refrigerant is cooled by the magnetic calorific material 20.
  • the cooled refrigerant is transferred from the fourth piping portion 12 to the second heat exchanger 72.
  • the refrigerant absorbs heat from the outside of the second heat exchanger 72. That is, the second heat exchanger 72 cools the external medium. Further, the temperature of the refrigerant rises in the second heat exchanger 72.
  • the refrigerant discharged from the second heat exchanger 72 is supplied to the magnetic calorific value material 20 by the pump 92 via the third piping portion 13. That is, in the second state of the magnetic refrigeration apparatus 100 shown in FIG. 31, the refrigerant circulates in the second closed loop.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
PCT/JP2020/017078 2020-04-20 2020-04-20 磁気冷凍装置および冷凍サイクル装置 Ceased WO2021214836A1 (ja)

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EP20932116.5A EP4141349A4 (en) 2020-04-20 2020-04-20 MAGNETIC REFRIGERATION DEVICE AND REFRIGERATION CYCLE DEVICE
PCT/JP2020/017078 WO2021214836A1 (ja) 2020-04-20 2020-04-20 磁気冷凍装置および冷凍サイクル装置
CN202080099771.4A CN115427742B (zh) 2020-04-20 2020-04-20 磁制冷装置及制冷循环装置
US17/799,277 US12366388B2 (en) 2020-04-20 2020-04-20 Magnetic refrigeration device and refrigeration cycle device
JP2022516490A JP7309052B2 (ja) 2020-04-20 2020-04-20 磁気冷凍装置および冷凍サイクル装置

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CN115427742B (zh) 2023-10-20
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