US20200003461A1 - Magnetic Heat Pump Apparatus - Google Patents
Magnetic Heat Pump Apparatus Download PDFInfo
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- US20200003461A1 US20200003461A1 US16/477,035 US201816477035A US2020003461A1 US 20200003461 A1 US20200003461 A1 US 20200003461A1 US 201816477035 A US201816477035 A US 201816477035A US 2020003461 A1 US2020003461 A1 US 2020003461A1
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- transfer medium
- heat transfer
- heat
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- magnetic working
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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
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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
- 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
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Definitions
- the present invention relates to a magnetic heat pump apparatus utilizing the magnetocaloric effect of magnetic working substances.
- a magnetic heat pump apparatus of this type having magnetic working substances filled in the ducts of magnetic working bodies changes a magnetic field to be applied to the magnetic working substances by causing permanent magnets to come in contact with or separate from the magnetic working bodies.
- the magnetic field to be applied is increased (magnetized)
- the temperature of the magnetic working substances increases
- the magnetic field is decreased (demagnetized) the temperature decreases.
- a heat transfer medium (water or the like) is reciprocated between a high-temperature end and a low-temperature end of the magnetic working bodies by using a pump and a rotary valve.
- the magnetic working substances are magnetized to increase the temperature thereof, and then the heat transfer medium is moved to the high-temperature end side from the low-temperature end side, whereby heat is exchanged between the magnetic working substances in which the temperature has increased by the magnetization and the low-temperature heat transfer medium.
- a temperature gradient in which the temperature is high on the high-temperature end side and the temperature is low on the low-temperature end side arises in the magnetic working bodies.
- the temperature decreases.
- the heat transfer medium is moved to the low-temperature end side from the high-temperature end side, whereby heat is exchanged between the magnetic working substances in which the temperature has decreased by the demagnetization and the high-temperature heat transfer medium. This further increases the temperature gradient of the magnetic working bodies.
- the temperature change caused by the magnetocaloric effect is stored in the magnetic working bodies themselves, and the heat transfer medium on the low-temperature end side and the heat transfer medium on the high-temperature end side are taken out to an external heat exchanger, whereby heat absorption (refrigerating) or heat dissipation (heating) is carried out (refer to, for example, Patent Document 1).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2008-51409
- the present invention has been made with a view toward solving the technical problems with the prior art described above, and an object of the invention is to provide a magnetic heat pump apparatus which solves the problem caused by the use of a rotary valve, thereby improving efficiency.
- a magnetic heat pump apparatus in accordance with the present invention includes: a magnetic working body which has a magnetic working substance having a magnetocaloric effect and in which a heat transfer medium is circulated; a magnetic field changing device which changes the size of a magnetic field to be applied to the magnetic working substance; a displacer which reciprocates the heat transfer medium between a high-temperature end and a low-temperature end of the magnetic working body; and an external heat transfer medium circulation circuit which has an external heat exchanger and which circulates a second heat transfer medium, wherein the external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium of the magnetic working body to exchange heat, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger.
- the magnetic heat pump apparatus includes: a first external heat transfer medium circulation circuit which has an external heat exchanger on a heat dissipation side; and a second external heat transfer medium circulation circuit which has an external heat exchanger on a heat absorption side, wherein the first external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a high-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium subjected to the heat exchange to the external heat exchanger on the heat dissipation side, and the second external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a low-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium subjected to the heat exchange to the external heat exchanger on the heat absorption side in the foregoing invention.
- the magnetic heat pump apparatus includes: a high-temperature end side displacer provided on the high-temperature end side of the magnetic working body; and a low-temperature end side displacer provided on the low-temperature end side of the magnetic working body, wherein the high-temperature end side displacer and the low-temperature end side displacer are placed back to back in the foregoing inventions.
- the magnetic heat pump apparatus includes a magnetic working body which has a magnetic working substance having a magnetocaloric effect and in which a heat transfer medium is circulated, a magnetic field changing device which changes the size of a magnetic field to be applied to the magnetic working substance; a displacer which reciprocates the heat transfer medium between a high-temperature end and a low-temperature end of the magnetic working body; and an external heat transfer medium circulation circuit which has an external heat exchanger and which circulates a second heat transfer medium, wherein the external heat transfer medium circulation circuit causes heat exchange between the second heat transfer medium and the heat transfer medium of the magnetic working body, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger.
- the heat exchange can be carried out between the heat transfer media on the high-temperature end side and the low-temperature end side of the magnetic working body and the second heat transfer medium thereby to indirectly take out the obtained heat transfer medium into an external heat exchanger.
- the heat transfer medium of the magnetic working body is reciprocated by the displacer, so that the problem of the mixing loss or the frictional heat, which would be caused by the use of a rotary valve, can be solved, and the temperature change caused by the magnetocaloric effect of the magnetic working substances can be effectively and efficiently utilized.
- a first external heat transfer medium circulation circuit which has an external heat exchanger on a heat dissipation side
- a second external heat transfer medium circulation circuit which has an external heat exchanger on a heat absorption side
- the first external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a high-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger on the heat dissipation side
- the second external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a low-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger on the heat absorption side
- the temperature of the heat transfer medium on the high-temperature end side of the magnetic working body can be efficiently moved to the second heat transfer medium, and the heat of
- the driving power of the displacers can be controlled to a minimum by placing, back to back, the high-temperature end side displacer provided on the high-temperature end side of the magnetic working body and the low-temperature end side displacer provided on the low-temperature end side of the magnetic working body, as with the invention of claim 3 .
- FIG. 1 is an overall configuration diagram of a magnetic heat pump apparatus of an example to which the present invention has been applied;
- FIG. 2 is a sectional view of an AMR (Active Magnetic Regenerator) for the magnetic heat pump of FIG. 1 ;
- FIG. 3 is an overall configuration diagram for explaining a magnetic heat pump apparatus of another example to which the present invention has been applied.
- FIG. 1 is an overall configuration diagram of a magnetic heat pump apparatus 1 of the example to which the present invention has been applied
- FIG. 2 is a sectional view of a magnetic heat pump AMR 2 of the magnetic heat pump apparatus 1 .
- the magnetic heat pump AMR 2 of FIG. 2 is provided with a hollow cylindrical housing 3 , both ends in the axial direction of which are closed and the interior of which is in a vacuum-tight state, and a rotating body 7 which is located at the axial center in the housing 3 and in which a pair (two pieces) of permanent magnets 6 (magnetic field generating members) are radially attached to axisymmetric peripheral surfaces. Both ends of a shaft of the rotating body 7 are rotatably and pivotably supported by the housing 3 , and the rotating body 7 is coupled to a rotating shaft 10 of a motor M ( FIG.
- the rotating body 7 , the permanent magnets 6 , the motor M, and the like constitute a magnetic field changing device, which changes the size of a magnetic field to be applied to magnetic working substances 13 described later.
- cams 9 FIG. 1
- drive displacers (pistons) 8 which will be described later, are also coupled to the rotating shaft 10 of the motor M.
- magnetic working bodies 11 A, 11 A, 11 B, and 11 B which are twice the number of the permanent magnets 6 , are fixed to the inner periphery of the housing 3 at equal intervals in the circumferential direction near the outer peripheral surface of the permanent magnets 6 .
- the magnetic working bodies 11 A and 11 A are disposed at axisymmetric positions with the rotating body 7 interposed therebetween, and the magnetic working bodies 11 B and 11 B are disposed at axisymmetric positions with the rotating body 7 interposed therebetween ( FIG. 2 ).
- the magnetic working bodies 11 A and 11 B are those in which magnetic working substances 13 having a magnetocaloric effect are individually charged into a hollow duct 12 having a circular arc shaped cross section along the inner periphery of the housing 3 such that a heat transfer medium (herein water: a first heat transfer medium) can circulate ( FIG. 1 ).
- a heat transfer medium herein water: a first heat transfer medium
- FIG. 1 representatively illustrates one magnetic working body 11 A and one magnetic working body 11 B.
- the duct 12 is composed of a resin material having a high heat insulation property.
- the loss of heat into the atmosphere (outside) from the magnetic working substances 13 in which the temperature increases or decreases due to the change (magnetization and demagnetization) of the magnetic field as described later is reduced.
- an Mn-based material or an La-based material is used as the magnetic working substances 13 .
- each of the magnetic working bodies 11 A and 11 B has a high-temperature end 14 at one end (the right end in FIG. 1 ) and has a low-temperature end 16 at the other end (the left end in FIG. 1 ).
- a high-temperature pipe 17 is attached to the high-temperature end 14 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B ( FIG. 1 representatively illustrates one magnetic working body 11 A and one magnetic working body 11 B) and is led out from the housing 3 of FIG. 2 .
- a low-temperature pipe 18 is attached to the low-temperature end 16 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B ( FIG. 1 representatively illustrates one magnetic working body 11 A and one magnetic working body 11 B) and is led out from the housing 3 of FIG. 2 .
- high-temperature end side heat exchangers 24 and 24 Connected to the high-temperature pipe 17 are high-temperature end side heat exchangers 24 and 24 disposed in the high-temperature end 14 of each of the magnetic working bodies 11 A, 11 A, 11 B and 11 B, and an external heat exchanger 19 on the heat dissipation side disposed outside the magnetic heat pump AMR 2 . Further, a circulation pump 21 is provided in the high-temperature pipe 17 . A second heat transfer medium (this being also water) is sealed in the high-temperature pipe 17 .
- the second heat transfer medium is circulated by the circulation pump 21 through the heat exchanger 24 provided in the high-temperature end 14 of each of the magnetic working bodies 11 A, 11 A, the external heat exchanger 19 , and the heat exchanger 24 provided in the high-temperature end 14 of each of the magnetic working bodies 11 B and 11 B in this order.
- the second heat transfer medium is subjected to heat exchange with the heat transfer medium on the high-temperature end 14 side (the first heat transfer medium) of each of the magnetic working bodies 11 A, 11 A, 11 B and 11 B in the heat exchangers 24 and 24 .
- the high-temperature pipe 17 , the heat exchangers 24 and 24 , the external heat exchanger 19 , and the circulation pump 21 constitute a first external heat transfer medium circulation circuit 27 .
- low-temperature end side heat exchangers 26 and 26 Connected to the low-temperature pipe 18 are low-temperature end side heat exchangers 26 and 26 disposed in the low-temperature end 16 of each of the magnetic working bodies 11 A, 11 A, 11 B and 11 B, and a heat absorption side external heat exchanger 22 disposed outside the magnetic heat pump AMR 2 . Further, a circulation pump 23 is provided in the low-temperature pipe 18 . The second heat transfer medium is sealed also in the low-temperature pipe 18 .
- the second heat transfer medium is circulated by the circulation pump 23 through the heat exchanger 26 provided in the low-temperature end 16 of each of the magnetic working bodies 11 A and 11 A, the external heat exchanger 22 , and the heat exchanger 26 provided in the low-temperature end 16 of each of the magnetic working bodies 11 B and 11 B in this order.
- the second heat transfer medium is subjected to heat exchange with the heat transfer medium on the low-temperature end 16 side (the first heat transfer medium) of each of the magnetic working bodies 11 A, 11 A, 11 B and 11 B in the heat exchangers 26 and 26 .
- the low-temperature pipe 18 , the heat exchangers 26 and 26 , the external heat exchanger 22 , and the circulation pump 23 constitute a second external heat transfer medium circulation circuit 28 .
- the displacers (pistons) 8 are individually disposed at the high-temperature end 14 and the low-temperature end 16 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B, and are driven by the cams 9 rotated by the rotating shaft 10 of the motor M to cause the heat transfer medium (water: the first heat transfer medium) to reciprocate between the high-temperature end 14 and the low-temperature end 16 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B.
- the heat transfer medium water: the first heat transfer medium
- the displacers 8 and the cams 9 and further the motor M, the rotating shaft 10 , and the like constitute a heat transfer medium moving device that causes the heat transfer medium to reciprocate between the high-temperature end 14 and the low-temperature end 16 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B.
- the magnetic heat pump apparatus 1 of the above-described configuration will be described.
- the rotating body 7 is located at the position of 0° (position illustrated in FIG. 2 )
- the permanent magnets 6 and 6 are located at the positions of 0° and 180°. Therefore, the size of magnetic fields to be applied to the magnetic working substances 13 of the magnetic working bodies 11 A and 11 A at the positions of 0° and 180° increases and the temperature increases by magnetization.
- the cams 9 and 9 are driven by the rotating shaft 10 of the motor M to retreat the displacers 8 on the high-temperature end 14 sides of the magnetic working bodies 11 A and 11 A and advance the displacers 8 on the low-temperature end 16 sides thereof as illustrated in FIG. 1 .
- the heat transfer medium is moved to the high-temperature end 14 side from the low-temperature end 16 side of the magnetic working body 11 A.
- heat is exchanged between the magnetic working substances 13 of the magnetic working bodies 11 A and 11 A in which the temperature has increased by magnetization by the permanent magnets 6 and 6 and the low-temperature heat transfer medium thereby to produce a temperature gradient in which the temperature on the high-temperature end 14 side is high and the temperature on the low-temperature end 16 side is low in each of the magnetic working bodies 11 A and 11 A.
- the cams 9 and 9 are driven by the rotating shaft 10 of the motor M to advance the displacers 8 on the high-temperature end 14 sides of the magnetic working bodies 11 B and 11 B and retreat the displacers 8 on the low-temperature end 16 sides thereof as illustrated in FIG. 1 .
- the heat transfer medium is moved to the low-temperature end 16 side from the high-temperature end 14 side of the magnetic working body 11 B.
- heat is exchanged between the magnetic working substances 13 of the magnetic working bodies 11 B and 11 B, in which the temperature has decreased by demagnetization, and the high-temperature heat transfer medium to further increase the temperature gradients of the magnetic working bodies 11 B and 11 B.
- the rotating body 7 is rotated by 90° by the motor M
- the permanent magnets 6 and 6 are brought to the positions of 90° and 270°. Therefore, the size of magnetic fields to be applied to the magnetic working substances 13 of the magnetic working bodies 11 B and 11 B located at the positions of 90° and 270° increases and the temperature increases by magnetization.
- the cams 9 and 9 are driven by the rotating shaft 10 of the motor M to advance the displacers 8 on the high-temperature end 14 sides of the magnetic working bodies 11 A and 11 A and retreat the displacers 8 on the low-temperature end 16 sides thereof.
- the heat transfer medium is moved to the low-temperature end 16 side from the high-temperature end 14 side of the magnetic working body 11 A.
- heat is exchanged between the magnetic working substances 13 of the magnetic working bodies 11 A and 11 A, in which the temperature has decreased by demagnetization, and the high-temperature heat transfer medium to further increase the temperature gradients of the magnetic working bodies 11 A and 11 A.
- the cams 9 and 9 are driven by the rotating shaft 10 of the motor M to advance the displacers 8 on the low-temperature end 16 sides of the magnetic working bodies 11 B and 11 B and retreat the displacers 8 on the high-temperature end 14 sides thereof.
- the heat transfer medium is moved to the high-temperature end 14 side from the low-temperature end 16 side of the magnetic working body 11 B.
- heat is exchanged between the magnetic working substances 13 of the magnetic working bodies 11 B and 11 B, in which the temperature has increased by magnetization by the permanent magnets 6 and 6 , and the low-temperature heat transfer medium to further increase the temperature gradients of the magnetic working bodies 11 B and 11 B.
- the second heat transfer medium, the temperature of which has increased, is circulated to the heat exchanger 19 on the heat dissipation side through the high-temperature pipe 17 by the circulation pump 21 , dissipating heat to the outside.
- the heat transfer medium on the low-temperature end 16 side of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B in which the temperature has decreased exchanges heat with the second heat transfer medium of the second external heat transfer medium circulation circuit 28 in the heat exchanger 26 , and the temperature of the second heat transfer medium decreases.
- the second heat transfer medium with the decreased temperature is circulated to the heat absorption side external heat exchanger 22 through the low-temperature pipe 18 by the circulation pump 23 , absorbing heat from the outside.
- the heat transfer medium (the first heat transfer medium) reciprocates, temperature changes in synchronization with the reciprocation are observed at the high-temperature end 14 and the low-temperature end 16 of each of the magnetic working bodies 11 A and 11 B.
- the heat exchange with the second heat transfer medium is carried out as described above, and the heat is dissipated or absorbed in the external heat exchanger 19 or 22 , thereby leveling the temperature changes of the heat transfer medium (the first heat transfer medium).
- the rotation of the rotating body 7 by the motor M and the switching of the displacers 8 are carried out at relatively high speeds and relatively rapid timings, the heat transfer medium (water) is reciprocated between the high-temperature end 14 and the low-temperature end 16 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B, and the heat absorption into and the heat dissipation from the magnetic working substances 13 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B to be magnetized and demagnetized are repeated, whereby a temperature difference between the high-temperature end 14 and the low-temperature end 16 of each of the magnetic working bodies 11 A, 11 A, 11 B, and 11 B gradually increases.
- the heat transfer medium is reciprocated between the high-temperature end 14 and the low-temperature end 16 of each of the magnetic working bodies 11 A and 11 B by the displacers 8 , the external heat transfer medium circulation circuits 27 and 28 , which circulate the second heat transfer medium to the external heat exchangers 19 and 22 , are provided, the heat exchange is carried out between the second heat transfer medium and the heat transfer media of the magnetic working bodies 11 A and 11 B by the external heat transfer medium circulation circuits 27 and 28 , and the second heat transfer medium which has been subjected to the heat exchange is circulated to the external heat exchangers 19 and 22 .
- the heat exchange can be carried out between the heat transfer medium (the first heat transfer medium) on the high-temperature end 14 side and the low-temperature end 16 side of each of the magnetic working bodies 11 A and 11 B and the second heat transfer medium, and the heat transfer medium after the heat exchange can be indirectly taken out to the external heat exchangers 19 and 22 .
- the heat transfer media of the magnetic working bodies 11 A and 11 B are reciprocated by the displacers 8 , so that the problem of the mixing loss or the frictional heat, which would arise due to the use of a rotary valve were used, is solved.
- the present invention makes it possible to effectively and efficiently utilize the temperature changes caused by the magnetocaloric effect of the magnetic working substances 13 .
- the first external heat transfer medium circulation circuit 27 having the heat dissipation side external heat exchanger 19 and the second external heat transfer medium circulation circuit 28 having the heat absorption side external heat exchanger 22 are provided, the first external heat transfer medium circulation circuit 27 causes heat exchange to be carried out between the second heat transfer medium and the heat transfer medium (the first heat transfer medium) on the high-temperature end 14 side of each of the magnetic working bodies 11 A and 11 B, the second heat transfer medium which has been subjected to the heat exchange is circulated to the heat dissipation side external heat exchanger 19 , the second external heat transfer medium circulation circuit 28 causes heat exchange to be carried out between the second heat transfer medium and the heat transfer medium (the first heat transfer medium) on the low-temperature end 16 side of each of the magnetic working bodies 11 A and 11 B, and the second heat transfer medium which has been subjected to the heat exchange is circulated to the heat absorption side external heat exchanger 22 .
- This arrangement makes it possible to efficiently move the temperature of the heat transfer medium (the first heat transfer medium) on the high-temperature end 14 side of each of the magnetic working bodies 11 A and 11 B to the second heat transfer medium, and to efficiently move the heat of the second heat transfer medium to the heat transfer medium (the first heat transfer medium) on the low-temperature end 16 side.
- the displacers 8 and the cams 9 of the magnetic working bodies 11 A and 11 B are driven at the high-temperature end 14 side and the low-temperature end 16 side, respectively, as illustrated in FIG. 1 .
- the displacers 8 provided on the high-temperature end 14 side (the displacers on the high-temperature end side) of the magnetic working bodies 11 A and 11 B and the displacers 8 provided on the low-temperature end 16 side (the displacers on the low-temperature end side) thereof could be placed back to back.
- the cam 9 on the high-temperature end 14 side and the cam 9 on the low-temperature end 16 side could be combined into one piece, and the displacer 8 on the high-temperature end 14 side could be advanced/retreated at both sides thereof so as to advance/retreat the displacer 8 on the low-temperature end 16 side, as indicated by the dashed line arrows F 1 and F 2 in FIG. 3 . Therefore, the cam 9 could be shared and the driving power for driving the displacers 8 could be controlled to a minimum.
- the overall configuration of the magnetic heat pump apparatus is not limited to the example, and various changes and modifications can obviously be made within the range that does not deviate from the spirit of the present invention.
Abstract
Provided is a magnetic heat pump apparatus which solves a problem caused by the use of a rotary valve and which has improved efficiency. The magnetic heat pump apparatus includes magnetic working bodies 11A and 11B, which are provided with magnetic working substances 13 having a magnetocaloric effect and in which a heat transfer medium is circulated, permanent magnets 6 which change the size of a magnetic field to be applied to the magnetic working substances, displacers 8 which cause the heat transfer medium to reciprocate between a high-temperature end 14 and a low-temperature end 16 of each of the magnetic working bodies, and external heat transfer medium circulation circuits 27 and 28 which have external heat exchangers 19 and 22 and which circulate a second heat transfer medium. The external heat transfer medium circulation circuits cause heat exchange to be carried out between the second heat transfer medium and the heat transfer medium of each of the magnetic working bodies, and then circulate the second heat transfer medium which has been subjected to the heat exchange to external heat exchangers.
Description
- The present invention relates to a magnetic heat pump apparatus utilizing the magnetocaloric effect of magnetic working substances.
- Recently, in place of a conventional vapor compression refrigeration apparatus using a gas refrigerant, such as chlorofluorocarbon, a magnetic heat pump apparatus utilizing the property of magnetic working substances that causes a large temperature change at magnetization and demagnetization (magnetocaloric effect) has been receiving attention.
- Heretofore, a magnetic heat pump apparatus of this type having magnetic working substances filled in the ducts of magnetic working bodies changes a magnetic field to be applied to the magnetic working substances by causing permanent magnets to come in contact with or separate from the magnetic working bodies. At this time, when the magnetic field to be applied is increased (magnetized), the temperature of the magnetic working substances increases, and when the magnetic field is decreased (demagnetized), the temperature decreases.
- Meanwhile, a heat transfer medium (water or the like) is reciprocated between a high-temperature end and a low-temperature end of the magnetic working bodies by using a pump and a rotary valve. In this case, the magnetic working substances are magnetized to increase the temperature thereof, and then the heat transfer medium is moved to the high-temperature end side from the low-temperature end side, whereby heat is exchanged between the magnetic working substances in which the temperature has increased by the magnetization and the low-temperature heat transfer medium. Thus, a temperature gradient in which the temperature is high on the high-temperature end side and the temperature is low on the low-temperature end side arises in the magnetic working bodies.
- Next, when the magnetic working substances are demagnetized, the temperature decreases. The heat transfer medium is moved to the low-temperature end side from the high-temperature end side, whereby heat is exchanged between the magnetic working substances in which the temperature has decreased by the demagnetization and the high-temperature heat transfer medium. This further increases the temperature gradient of the magnetic working bodies.
- Thus, the temperature change caused by the magnetocaloric effect is stored in the magnetic working bodies themselves, and the heat transfer medium on the low-temperature end side and the heat transfer medium on the high-temperature end side are taken out to an external heat exchanger, whereby heat absorption (refrigerating) or heat dissipation (heating) is carried out (refer to, for example, Patent Document 1).
- However, the use of a rotary valve gives rise to a mixing loss or frictional heat of heat transfer media having different temperatures due to structural reasons. There has been another problem in that the flow rate of a heat transfer medium differs between an external heat exchanger and a magnetic working body.
- The present invention has been made with a view toward solving the technical problems with the prior art described above, and an object of the invention is to provide a magnetic heat pump apparatus which solves the problem caused by the use of a rotary valve, thereby improving efficiency.
- A magnetic heat pump apparatus in accordance with the present invention includes: a magnetic working body which has a magnetic working substance having a magnetocaloric effect and in which a heat transfer medium is circulated; a magnetic field changing device which changes the size of a magnetic field to be applied to the magnetic working substance; a displacer which reciprocates the heat transfer medium between a high-temperature end and a low-temperature end of the magnetic working body; and an external heat transfer medium circulation circuit which has an external heat exchanger and which circulates a second heat transfer medium, wherein the external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium of the magnetic working body to exchange heat, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger.
- The magnetic heat pump apparatus according to the present invention of
claim 2 includes: a first external heat transfer medium circulation circuit which has an external heat exchanger on a heat dissipation side; and a second external heat transfer medium circulation circuit which has an external heat exchanger on a heat absorption side, wherein the first external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a high-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium subjected to the heat exchange to the external heat exchanger on the heat dissipation side, and the second external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a low-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium subjected to the heat exchange to the external heat exchanger on the heat absorption side in the foregoing invention. - The magnetic heat pump apparatus according to the invention of claim 3 includes: a high-temperature end side displacer provided on the high-temperature end side of the magnetic working body; and a low-temperature end side displacer provided on the low-temperature end side of the magnetic working body, wherein the high-temperature end side displacer and the low-temperature end side displacer are placed back to back in the foregoing inventions.
- The magnetic heat pump apparatus according to the present invention includes a magnetic working body which has a magnetic working substance having a magnetocaloric effect and in which a heat transfer medium is circulated, a magnetic field changing device which changes the size of a magnetic field to be applied to the magnetic working substance; a displacer which reciprocates the heat transfer medium between a high-temperature end and a low-temperature end of the magnetic working body; and an external heat transfer medium circulation circuit which has an external heat exchanger and which circulates a second heat transfer medium, wherein the external heat transfer medium circulation circuit causes heat exchange between the second heat transfer medium and the heat transfer medium of the magnetic working body, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger. Thus, the heat exchange can be carried out between the heat transfer media on the high-temperature end side and the low-temperature end side of the magnetic working body and the second heat transfer medium thereby to indirectly take out the obtained heat transfer medium into an external heat exchanger.
- Further, the heat transfer medium of the magnetic working body is reciprocated by the displacer, so that the problem of the mixing loss or the frictional heat, which would be caused by the use of a rotary valve, can be solved, and the temperature change caused by the magnetocaloric effect of the magnetic working substances can be effectively and efficiently utilized.
- In this case, as with the invention of
claim 2, if a first external heat transfer medium circulation circuit, which has an external heat exchanger on a heat dissipation side, and a second external heat transfer medium circulation circuit, which has an external heat exchanger on a heat absorption side, are provided, and if the first external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a high-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger on the heat dissipation side, and the second external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium on a low-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger on the heat absorption side, then the temperature of the heat transfer medium on the high-temperature end side of the magnetic working body can be efficiently moved to the second heat transfer medium, and the heat of the second heat transfer medium can be efficiently moved to the heat transfer medium on the low-temperature end side. - Further, the driving power of the displacers can be controlled to a minimum by placing, back to back, the high-temperature end side displacer provided on the high-temperature end side of the magnetic working body and the low-temperature end side displacer provided on the low-temperature end side of the magnetic working body, as with the invention of claim 3.
-
FIG. 1 is an overall configuration diagram of a magnetic heat pump apparatus of an example to which the present invention has been applied; -
FIG. 2 is a sectional view of an AMR (Active Magnetic Regenerator) for the magnetic heat pump ofFIG. 1 ; and -
FIG. 3 is an overall configuration diagram for explaining a magnetic heat pump apparatus of another example to which the present invention has been applied. - The following will describe an example of the present invention with reference to the accompanying drawings.
FIG. 1 is an overall configuration diagram of a magnetic heat pump apparatus 1 of the example to which the present invention has been applied, andFIG. 2 is a sectional view of a magneticheat pump AMR 2 of the magnetic heat pump apparatus 1. - (1) Configuration of the Magnetic Heat Pump Apparatus 1
- First, the magnetic
heat pump AMR 2 ofFIG. 2 will be described. The magneticheat pump AMR 2 of the magnetic heat pump apparatus 1 is provided with a hollow cylindrical housing 3, both ends in the axial direction of which are closed and the interior of which is in a vacuum-tight state, and a rotatingbody 7 which is located at the axial center in the housing 3 and in which a pair (two pieces) of permanent magnets 6 (magnetic field generating members) are radially attached to axisymmetric peripheral surfaces. Both ends of a shaft of the rotatingbody 7 are rotatably and pivotably supported by the housing 3, and the rotatingbody 7 is coupled to a rotatingshaft 10 of a motor M (FIG. 1 , a servo motor) through a decelerator, which is not illustrated, and the rotation is controlled by the motor M. The rotatingbody 7, thepermanent magnets 6, the motor M, and the like constitute a magnetic field changing device, which changes the size of a magnetic field to be applied to magneticworking substances 13 described later. Further, cams 9 (FIG. 1 ) that drive displacers (pistons) 8, which will be described later, are also coupled to the rotatingshaft 10 of the motor M. - Meanwhile, four
magnetic working bodies permanent magnets 6, are fixed to the inner periphery of the housing 3 at equal intervals in the circumferential direction near the outer peripheral surface of thepermanent magnets 6. In the case of the example, themagnetic working bodies body 7 interposed therebetween, and the magnetic workingbodies body 7 interposed therebetween (FIG. 2 ). Themagnetic working bodies working substances 13 having a magnetocaloric effect are individually charged into ahollow duct 12 having a circular arc shaped cross section along the inner periphery of the housing 3 such that a heat transfer medium (herein water: a first heat transfer medium) can circulate (FIG. 1 ). - Although the
magnetic working bodies FIG. 2 ,FIG. 1 representatively illustrates one magnetic workingbody 11A and one magnetic workingbody 11B. In the example, theduct 12 is composed of a resin material having a high heat insulation property. Thus, the loss of heat into the atmosphere (outside) from the magneticworking substances 13 in which the temperature increases or decreases due to the change (magnetization and demagnetization) of the magnetic field as described later is reduced. In the example, an Mn-based material or an La-based material is used as the magneticworking substances 13. - Further, in the overall configuration diagram of the magnetic heat pump apparatus 1 of
FIG. 1 in which the magneticheat pump AMR 2 is installed, each of themagnetic working bodies temperature end 14 at one end (the right end inFIG. 1 ) and has a low-temperature end 16 at the other end (the left end inFIG. 1 ). Further, a high-temperature pipe 17 is attached to the high-temperature end 14 of each of themagnetic working bodies FIG. 1 representatively illustrates one magnetic workingbody 11A and one magnetic workingbody 11B) and is led out from the housing 3 ofFIG. 2 . Further, a low-temperature pipe 18 is attached to the low-temperature end 16 of each of themagnetic working bodies FIG. 1 representatively illustrates one magnetic workingbody 11A and one magnetic workingbody 11B) and is led out from the housing 3 ofFIG. 2 . - Connected to the high-
temperature pipe 17 are high-temperature endside heat exchangers temperature end 14 of each of themagnetic working bodies external heat exchanger 19 on the heat dissipation side disposed outside the magneticheat pump AMR 2. Further, acirculation pump 21 is provided in the high-temperature pipe 17. A second heat transfer medium (this being also water) is sealed in the high-temperature pipe 17. The second heat transfer medium is circulated by thecirculation pump 21 through theheat exchanger 24 provided in the high-temperature end 14 of each of themagnetic working bodies external heat exchanger 19, and theheat exchanger 24 provided in the high-temperature end 14 of each of themagnetic working bodies temperature end 14 side (the first heat transfer medium) of each of themagnetic working bodies heat exchangers temperature pipe 17, theheat exchangers external heat exchanger 19, and thecirculation pump 21 constitute a first external heat transfermedium circulation circuit 27. - Connected to the low-
temperature pipe 18 are low-temperature endside heat exchangers temperature end 16 of each of themagnetic working bodies external heat exchanger 22 disposed outside the magneticheat pump AMR 2. Further, acirculation pump 23 is provided in the low-temperature pipe 18. The second heat transfer medium is sealed also in the low-temperature pipe 18. The second heat transfer medium is circulated by thecirculation pump 23 through theheat exchanger 26 provided in the low-temperature end 16 of each of themagnetic working bodies external heat exchanger 22, and theheat exchanger 26 provided in the low-temperature end 16 of each of themagnetic working bodies temperature end 16 side (the first heat transfer medium) of each of themagnetic working bodies heat exchangers temperature pipe 18, theheat exchangers external heat exchanger 22, and thecirculation pump 23 constitute a second external heat transfermedium circulation circuit 28. - The displacers (pistons) 8 are individually disposed at the high-
temperature end 14 and the low-temperature end 16 of each of themagnetic working bodies cams 9 rotated by the rotatingshaft 10 of the motor M to cause the heat transfer medium (water: the first heat transfer medium) to reciprocate between the high-temperature end 14 and the low-temperature end 16 of each of themagnetic working bodies - More specifically, when the displacer 8 on the high-
temperature end 14 side of each of themagnetic working bodies displacer 8 on the low-temperature end 16 side thereof advances as illustrated inFIG. 1 , the heat transfer medium is moved to the high-temperature end 14 side from the low-temperature end 16 side of the magnetic workingbody 11A. On the other hand, thedisplacer 8 on the low-temperature end 16 side of each of the magnetic workingbodies displacer 8 on the high-temperature end 14 side thereof advances as illustrated inFIG. 1 , so that the heat transfer medium is moved to the low-temperature end 16 side from the high-temperature end 14 side of the magnetic workingbody 11B. Thedisplacers 8 and thecams 9 and further the motor M, the rotatingshaft 10, and the like constitute a heat transfer medium moving device that causes the heat transfer medium to reciprocate between the high-temperature end 14 and the low-temperature end 16 of each of themagnetic working bodies - (2) Operation of the Magnetic Heat Pump Apparatus 1
- The operation of the magnetic heat pump apparatus 1 of the above-described configuration will be described. First, when the
rotating body 7 is located at the position of 0° (position illustrated inFIG. 2 ), thepermanent magnets substances 13 of the magnetic workingbodies substances 13 of the magnetic workingbodies - When the
rotating body 7 is located at the position of 0° (FIG. 2 ) by the rotation of the motor M, thecams shaft 10 of the motor M to retreat thedisplacers 8 on the high-temperature end 14 sides of the magnetic workingbodies displacers 8 on the low-temperature end 16 sides thereof as illustrated inFIG. 1 . Thus, the heat transfer medium is moved to the high-temperature end 14 side from the low-temperature end 16 side of the magnetic workingbody 11A. - Thus, heat is exchanged between the magnetic working
substances 13 of the magnetic workingbodies permanent magnets temperature end 14 side is high and the temperature on the low-temperature end 16 side is low in each of the magnetic workingbodies - When the
rotating body 7 is located at the position of 0° (FIG. 2 ) by the rotation of the motor M, thecams shaft 10 of the motor M to advance thedisplacers 8 on the high-temperature end 14 sides of the magnetic workingbodies displacers 8 on the low-temperature end 16 sides thereof as illustrated inFIG. 1 . Thus, the heat transfer medium is moved to the low-temperature end 16 side from the high-temperature end 14 side of the magnetic workingbody 11B. Thus, heat is exchanged between the magnetic workingsubstances 13 of the magnetic workingbodies bodies - Next, when the
rotating body 7 is rotated by 90° by the motor M, thepermanent magnets substances 13 of the magnetic workingbodies substances 13 of the magnetic workingbodies - When the
rotating body 7 is located at the position of 90° by the rotation of the motor M, thecams shaft 10 of the motor M to advance thedisplacers 8 on the high-temperature end 14 sides of the magnetic workingbodies displacers 8 on the low-temperature end 16 sides thereof. Thus, the heat transfer medium is moved to the low-temperature end 16 side from the high-temperature end 14 side of the magnetic workingbody 11A. Thus, heat is exchanged between the magnetic workingsubstances 13 of the magnetic workingbodies bodies - When the
rotating body 7 is brought to the position of 90° by the rotation of the motor M, thecams shaft 10 of the motor M to advance thedisplacers 8 on the low-temperature end 16 sides of the magnetic workingbodies displacers 8 on the high-temperature end 14 sides thereof. Thus, the heat transfer medium is moved to the high-temperature end 14 side from the low-temperature end 16 side of the magnetic workingbody 11B. - Thus, heat is exchanged between the magnetic working
substances 13 of the magnetic workingbodies permanent magnets bodies - Thus, the heat transfer medium on the high-
temperature end 14 side of each of the magnetic workingbodies medium circulation circuit 27 in theheat exchanger 24, and the temperature of the second heat transfer medium increases. The second heat transfer medium, the temperature of which has increased, is circulated to theheat exchanger 19 on the heat dissipation side through the high-temperature pipe 17 by thecirculation pump 21, dissipating heat to the outside. - The heat transfer medium on the low-
temperature end 16 side of each of the magnetic workingbodies medium circulation circuit 28 in theheat exchanger 26, and the temperature of the second heat transfer medium decreases. The second heat transfer medium with the decreased temperature is circulated to the heat absorption sideexternal heat exchanger 22 through the low-temperature pipe 18 by thecirculation pump 23, absorbing heat from the outside. As the heat transfer medium (the first heat transfer medium) reciprocates, temperature changes in synchronization with the reciprocation are observed at the high-temperature end 14 and the low-temperature end 16 of each of the magnetic workingbodies external heat exchanger - The rotation of the
rotating body 7 by the motor M and the switching of thedisplacers 8 are carried out at relatively high speeds and relatively rapid timings, the heat transfer medium (water) is reciprocated between the high-temperature end 14 and the low-temperature end 16 of each of the magnetic workingbodies substances 13 of each of the magnetic workingbodies temperature end 14 and the low-temperature end 16 of each of the magnetic workingbodies temperature end 16 of each of the magnetic workingbodies heat exchanger 26, through which the second heat transfer medium to be circulated to the heat absorption sideexternal heat exchanger 22 passes, eventually decreases to a temperature at which the refrigerating capacity of the magnetic workingsubstances 13 and a heat load of an object to be cooled by theexternal heat exchanger 22 are balanced, and the temperature of the high-temperature end 14 of each of the magnetic workingbodies heat exchanger 24, through which the second heat transfer medium to be circulated to theexternal heat exchanger 19 on the heat dissipation side passes, becomes a substantially constant temperature because the heat dissipation capacity and the refrigerating capacity of theexternal heat exchanger 19 are brought into balance. - As described above, according to the present invention, the heat transfer medium is reciprocated between the high-
temperature end 14 and the low-temperature end 16 of each of the magnetic workingbodies displacers 8, the external heat transfermedium circulation circuits external heat exchangers bodies medium circulation circuits external heat exchangers temperature end 14 side and the low-temperature end 16 side of each of the magnetic workingbodies external heat exchangers - Further, the heat transfer media of the magnetic working
bodies displacers 8, so that the problem of the mixing loss or the frictional heat, which would arise due to the use of a rotary valve were used, is solved. Thus, the present invention makes it possible to effectively and efficiently utilize the temperature changes caused by the magnetocaloric effect of the magnetic workingsubstances 13. - Further, in the example, the first external heat transfer
medium circulation circuit 27 having the heat dissipation sideexternal heat exchanger 19 and the second external heat transfermedium circulation circuit 28 having the heat absorption sideexternal heat exchanger 22 are provided, the first external heat transfermedium circulation circuit 27 causes heat exchange to be carried out between the second heat transfer medium and the heat transfer medium (the first heat transfer medium) on the high-temperature end 14 side of each of the magnetic workingbodies external heat exchanger 19, the second external heat transfermedium circulation circuit 28 causes heat exchange to be carried out between the second heat transfer medium and the heat transfer medium (the first heat transfer medium) on the low-temperature end 16 side of each of the magnetic workingbodies external heat exchanger 22. This arrangement makes it possible to efficiently move the temperature of the heat transfer medium (the first heat transfer medium) on the high-temperature end 14 side of each of the magnetic workingbodies temperature end 16 side. - In the example, the
displacers 8 and thecams 9 of the magnetic workingbodies temperature end 14 side and the low-temperature end 16 side, respectively, as illustrated inFIG. 1 . Alternatively, however, thedisplacers 8 provided on the high-temperature end 14 side (the displacers on the high-temperature end side) of the magnetic workingbodies displacers 8 provided on the low-temperature end 16 side (the displacers on the low-temperature end side) thereof could be placed back to back. In such a case, it would be necessary to change the shapes of the magnetic workingbodies heat pump AMR 2 would be different from that ofFIG. 2 . However, thecam 9 on the high-temperature end 14 side and thecam 9 on the low-temperature end 16 side could be combined into one piece, and thedisplacer 8 on the high-temperature end 14 side could be advanced/retreated at both sides thereof so as to advance/retreat thedisplacer 8 on the low-temperature end 16 side, as indicated by the dashed line arrows F1 and F2 inFIG. 3 . Therefore, thecam 9 could be shared and the driving power for driving thedisplacers 8 could be controlled to a minimum. - The overall configuration of the magnetic heat pump apparatus is not limited to the example, and various changes and modifications can obviously be made within the range that does not deviate from the spirit of the present invention.
-
-
- 1 magnetic heat pump device
- 2 magnetic heat pump AMR
- 3 housing
- 6 permanent magnet (magnetic field changing device)
- 7 rotating body (magnetic field changing device)
- 8 displacer (heat transfer medium moving device)
- 9 cam (heat transfer medium moving device)
- 11A, 11B magnetic working body
- 12 duct
- 13 magnetic working substance
- 14 high-temperature end
- 16 low-temperature end
- 19, 22 external heat exchanger
- 21, 23 circulation pump
- 24, 26 heat exchanger
- 27 first external heat transfer medium circulation circuit
- 28 second external heat transfer medium circulation circuit
- M motor
Claims (3)
1. A magnetic heat pump apparatus comprising:
a magnetic working body which includes a magnetic working substance having a magnetocaloric effect and in which a heat transfer medium is circulated;
a magnetic field changing device which changes the size of a magnetic field to be applied to the magnetic working substance;
a displacer which reciprocates the heat transfer medium between a high-temperature end and a low-temperature end of the magnetic working body; and
an external heat transfer medium circulation circuit which has an external heat exchanger and which circulates a second heat transfer medium,
wherein the external heat transfer medium circulation circuit causes the second heat transfer medium and the heat transfer medium of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium that has been subjected to the heat exchange to the external heat exchanger.
2. The magnetic heat pump apparatus according to claim 1 , comprising:
a first external heat transfer medium circulation circuit which has the external heat exchanger on a heat dissipation side; and
a second external heat transfer medium circulation circuit which has the external heat exchanger on a heat absorption side,
wherein the first external heat transfer medium circulation circuit causes the second heat transfer medium and a heat transfer medium on a high-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium which has been subjected to the heat exchange to the external heat exchanger on the heat dissipation side, and
the second external heat transfer medium circulation circuit causes the second heat transfer medium and a heat transfer medium on a low-temperature end side of the magnetic working body to carry out heat exchange, and circulates the second heat transfer medium which has been subjected to the heat exchange to the external heat exchanger on the heat absorption side.
3. The magnetic heat pump apparatus according to claim 1 , comprising:
a high-temperature end side displacer provided on the high-temperature end side of the magnetic working body; and
a low-temperature end side displacer provided on the low-temperature end side of the magnetic working body,
wherein the high-temperature end side displacer and the low-temperature end side displacer are placed back to back.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017-006054 | 2017-01-17 | ||
JP2017006054A JP2018115792A (en) | 2017-01-17 | 2017-01-17 | Magnetic heat pump device |
PCT/JP2018/000584 WO2018135386A1 (en) | 2017-01-17 | 2018-01-12 | Magnetic heat pump apparatus |
Publications (1)
Publication Number | Publication Date |
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US20200003461A1 true US20200003461A1 (en) | 2020-01-02 |
Family
ID=62908257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US16/477,035 Abandoned US20200003461A1 (en) | 2017-01-17 | 2018-01-12 | Magnetic Heat Pump Apparatus |
Country Status (5)
Country | Link |
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US (1) | US20200003461A1 (en) |
JP (1) | JP2018115792A (en) |
CN (1) | CN110177982A (en) |
DE (1) | DE112018000412T5 (en) |
WO (1) | WO2018135386A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210239369A1 (en) * | 2018-09-27 | 2021-08-05 | Daikin Industries, Ltd. | Magnetic refrigeration system |
TWI811705B (en) * | 2021-02-25 | 2023-08-11 | 日商鎧俠股份有限公司 | Semiconductor manufacturing device and method for manufacturing semiconductor device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7185131B2 (en) * | 2018-09-14 | 2022-12-07 | ダイキン工業株式会社 | magnetic refrigeration module |
EP3862658A1 (en) * | 2020-02-06 | 2021-08-11 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Method for stabilizing and / or controlling and / or regulating the working temperature, heat exchanger unit, device for transporting energy, refrigerating machine and heat pump |
DE102020213158A1 (en) | 2020-10-19 | 2022-04-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Magnetocaloric distillation unit |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3316356B2 (en) * | 1995-10-26 | 2002-08-19 | 三菱重工業株式会社 | Magnetic refrigerator |
JP4533838B2 (en) * | 2005-12-06 | 2010-09-01 | 株式会社東芝 | Heat transport device, refrigerator and heat pump |
DE102006006326B4 (en) * | 2006-02-11 | 2007-12-06 | Bruker Biospin Ag | Hybrid heat pump / chiller with magnetic cooling stage |
FR2922999A1 (en) * | 2007-10-30 | 2009-05-01 | Cooltech Applic Soc Par Action | Heat generator for use in e.g. domestic application, has unit synchronized with field variation to move coolant in directions such that fraction of coolant circulates in direction of cold exchange chamber across elements at cooling cycle |
FR2937182B1 (en) * | 2008-10-14 | 2010-10-22 | Cooltech Applications | THERMAL GENERATOR WITH MAGNETOCALORIC MATERIAL |
FR2942305B1 (en) * | 2009-02-17 | 2011-02-18 | Cooltech Applications | MAGNETOCALORIC THERMAL GENERATOR |
FR2943407B1 (en) * | 2009-03-20 | 2013-04-12 | Cooltech Applications | MAGNETOCALORIC THERMAL GENERATOR AND ITS THERMAL EXCHANGE METHOD |
JP5267689B2 (en) * | 2011-04-26 | 2013-08-21 | 株式会社デンソー | Magnetic heat pump device |
JP5338889B2 (en) * | 2011-04-28 | 2013-11-13 | 株式会社デンソー | Magnetic heat pump system and air conditioner using the system |
JP5724603B2 (en) * | 2011-05-11 | 2015-05-27 | 株式会社デンソー | Magnetic refrigeration system and air conditioner using the magnetic refrigeration system |
FR2982015B1 (en) * | 2011-10-28 | 2019-03-15 | Cooltech Applications | MAGNETOCALORIC THERMAL GENERATOR |
JP6350138B2 (en) * | 2014-09-03 | 2018-07-04 | 株式会社デンソー | Thermal equipment |
-
2017
- 2017-01-17 JP JP2017006054A patent/JP2018115792A/en active Pending
-
2018
- 2018-01-12 DE DE112018000412.0T patent/DE112018000412T5/en not_active Ceased
- 2018-01-12 WO PCT/JP2018/000584 patent/WO2018135386A1/en active Application Filing
- 2018-01-12 US US16/477,035 patent/US20200003461A1/en not_active Abandoned
- 2018-01-12 CN CN201880007061.7A patent/CN110177982A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210239369A1 (en) * | 2018-09-27 | 2021-08-05 | Daikin Industries, Ltd. | Magnetic refrigeration system |
US11940185B2 (en) * | 2018-09-27 | 2024-03-26 | Daikin Industries, Ltd. | Magnetic refrigeration system |
TWI811705B (en) * | 2021-02-25 | 2023-08-11 | 日商鎧俠股份有限公司 | Semiconductor manufacturing device and method for manufacturing semiconductor device |
Also Published As
Publication number | Publication date |
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JP2018115792A (en) | 2018-07-26 |
CN110177982A (en) | 2019-08-27 |
DE112018000412T5 (en) | 2019-10-02 |
WO2018135386A1 (en) | 2018-07-26 |
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