WO2022209948A1 - 磁気冷凍装置及び冷凍装置 - Google Patents
磁気冷凍装置及び冷凍装置 Download PDFInfo
- Publication number
- WO2022209948A1 WO2022209948A1 PCT/JP2022/012220 JP2022012220W WO2022209948A1 WO 2022209948 A1 WO2022209948 A1 WO 2022209948A1 JP 2022012220 W JP2022012220 W JP 2022012220W WO 2022209948 A1 WO2022209948 A1 WO 2022209948A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- magnet
- working material
- magnetic working
- magnetic field
- Prior art date
Links
- 238000005057 refrigeration Methods 0.000 title claims description 19
- 230000004907 flux Effects 0.000 claims abstract description 50
- 239000000126 substance Substances 0.000 claims abstract description 37
- 239000008207 working material Substances 0.000 claims description 124
- 230000035699 permeability Effects 0.000 claims description 5
- 238000012986 modification Methods 0.000 description 14
- 230000004048 modification Effects 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000012267 brine Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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 disclosure relates to magnetic refrigerators and refrigerators.
- Patent Document 1 from the N pole of the permanent magnet, through the N pole side built-in yoke, the inter-material yoke, the magnetic material accommodated in the material container, the inter-material yoke, and the S pole side built-in yoke in order, the permanent magnet A magnetic heat pump device is disclosed in which the magnetic flux flows to the south pole of the .
- Patent Document 1 a permanent magnet and a built-in yoke are arranged inside the main body, and a plurality of material containers and inter-material yokes are arranged along the inner peripheral surface of the main body.
- the length of the magnetic path becomes long, and there is a problem that the size of the entire device increases.
- the purpose of the present disclosure is to improve the arrangement of magnets so that the magnetic path length can be shortened.
- a first aspect of the present disclosure includes a plurality of magnetic working substances (11) arranged at intervals in the circumferential direction, relative movement in the circumferential direction with respect to the magnetic working substances (11), and the magnetic working substance (11). and a magnetic field applying section (20) for applying a magnetic field to the substance (11), wherein the magnetic field applying section (20) is arranged axially away from the magnetic working substance (11).
- 1 member (21) which is arranged between the first member (21) and the magnetic working material (11) and applies a magnetic field so that the magnetic flux flows in the in-plane direction of the magnetic working material (11)
- a magnetic refrigerator configured to move.
- the magnetic field applying section (20) has a first member (21), a first magnet (25) and a second magnet (26).
- the first member (21) is axially spaced from the magnetic working material (11).
- a first magnet (25) and a second magnet (26) are positioned between the first member (21) and the magnetic working material (11).
- the first magnet (25) and the second magnet (26) apply a magnetic field such that magnetic flux flows in the in-plane direction of the magnetic working material (11).
- the first magnet (25) and the second magnet (26) are configured to move relative to the magnetic working material (11) in the circumferential direction.
- the length of the magnetic path is shortened, so the overall device can be made compact and the magnetic flux density can be improved.
- assembly is easier than handling a single magnet with a strong magnetic force.
- a second aspect of the present disclosure is the magnetic refrigeration system of the first aspect, wherein the first magnet (25) and the second magnet (26) are axially aligned with the magnetic working material (11) through which magnetic flux is flowing. When viewed from the direction, they are respectively arranged along both sides of the magnetic working material (11) in the circumferential direction.
- the magnetic flux can flow along the circumferential direction of the magnetic working material (11). Moreover, it can be assembled using magnets of the same shape.
- a third aspect of the present disclosure is the magnetic refrigerating device of the second aspect, wherein the first magnet (25) and the second magnet (26) have a radially outer magnet width that is a radially inner magnet width. bigger than
- the magnetic field strength in the magnetic working material (11) can be made constant by adjusting the magnet width according to the magnetic path length.
- a fourth aspect of the present disclosure is the magnetic refrigeration system of the first aspect, wherein the first magnet (25) and the second magnet (26) are axially aligned with the magnetic working material (11) through which magnetic flux is flowing. When viewed from the direction, they are arranged respectively along both radial sides of the magnetic working material (11).
- the magnetic flux can flow along the radial direction of the magnetic working material (11).
- a fifth aspect of the present disclosure is the magnetic refrigeration apparatus of any one of the first to fourth aspects, wherein the magnetic field applying section (20) has a third magnet (27), and the third magnet (27 ) is arranged between the first magnet (25) and the second magnet (26) when viewed from the axial direction.
- the magnetic field strength in the magnetic working material (11) can be made strong and constant.
- a sixth aspect of the present disclosure is the magnetic refrigerating apparatus according to any one of the first to fifth aspects, wherein the magnetic working material (11) includes a yoke having a higher magnetic permeability than the magnetic working material (11) ( 13) is provided, and the yoke (13) is arranged along both sides overlapping the first magnet (25) and the second magnet (26) when viewed from the axial direction.
- a magnetic field can be uniformly applied to the magnetic working material (11) by passing magnetic flux through the yokes (13) on both sides of the magnetic working material (11).
- a seventh aspect of the present disclosure includes a magnetic refrigeration system (10) according to any one of the first to sixth aspects, and a heat medium circuit (2) that exchanges heat with the magnetic refrigeration system (10).
- FIG. 1 is a piping system diagram of a refrigeration system of Embodiment 1.
- FIG. FIG. 2 is a perspective view showing the configuration of the magnetic refrigerator.
- FIG. 3 is an exploded perspective view showing the configuration of the magnetic refrigerator.
- FIG. 4 is a plan view showing the configuration of the magnetic refrigerator. 5 is a cross-sectional view taken along the line AA in FIG. 4.
- FIG. 6 is a side sectional view showing a modification of Embodiment 1.
- FIG. FIG. 7 is a perspective view showing the configuration of the magnetic refrigerator of Embodiment 2.
- FIG. 8 is an exploded perspective view showing the configuration of the magnetic refrigerator.
- FIG. 11 is a side sectional view showing Modification 1 of Embodiment 2.
- FIG. 12 is a plan view showing Modification 2 of Embodiment 2.
- FIG. 13 is a cross-sectional view taken along line CC of FIG. 12.
- FIG. 14 is a plan view showing the configuration of a magnetic refrigerator according to Embodiment 3.
- FIG. 15 is a cross-sectional view taken along line DD of FIG. 14.
- FIG. FIG. 16 is a side cross-sectional view showing a modification of Embodiment 3.
- FIG. FIG. 17 is a plan view showing the configuration of the magnetic refrigeration system of Embodiment 4.
- FIG. 18 is a cross-sectional view taken along line EE of FIG. 17.
- FIG. 18 is a cross-sectional view taken along line EE of FIG. 17.
- Embodiment 1 ⁇ Embodiment 1>> Embodiment 1 will be described.
- the refrigeration system (1) has a heat medium circuit (2).
- a refrigerator (1) is applied to, for example, an air conditioner.
- the heat medium circuit (2) is filled with a heat medium.
- the heat medium includes, for example, refrigerant, water, brine, and the like.
- the refrigeration system (1) includes a low temperature side heat exchanger (3), a high temperature side heat exchanger (4), a pump (5), and a magnetic refrigerator (10).
- the magnetic refrigerator (10) uses the magnetocaloric effect to adjust the temperature of the heat medium.
- the heat medium circuit (2) is formed in a closed loop.
- a pump (5), a low temperature side heat exchanger (3), a magnetic refrigerator (10), and a high temperature side heat exchanger (4) are connected in this order to the heat medium circuit (2).
- the heat medium circuit (2) includes a low temperature side channel (2a) and a high temperature side channel (2b).
- the low temperature side channel (2a) connects the temperature control channel (10a) of the magnetic refrigerator (10) and the first port (6a) of the pump (5).
- the high temperature side channel (2b) connects the temperature control channel (10a) of the magnetic refrigerator (10) and the second port (6b) of the pump (5).
- the low-temperature side heat exchanger (3) exchanges heat between the heat medium cooled by the magnetic refrigeration system (10) and a predetermined object to be cooled (eg, secondary refrigerant, air, etc.).
- the high-temperature side heat exchanger (4) exchanges heat between the heat medium heated by the magnetic refrigeration system (10) and a predetermined heating target (eg, secondary refrigerant, air, etc.).
- the pump (5) alternately and repeatedly performs the first operation and the second operation.
- the heat medium in the heat medium circuit (2) is conveyed leftward in FIG.
- the heat medium in the heat medium circuit (2) is conveyed rightward in FIG.
- the pump (5) constitutes a transport mechanism that reciprocates the heat medium in the heat medium circuit (2).
- the pump (5) consists of a reciprocating piston pump.
- the pump (5) has a pump case (6) and a piston (7).
- the piston (7) is movably arranged inside the pump case (6).
- the piston (7) partitions the interior of the pump case (6) into a first chamber (S1) and a second chamber (S2).
- a first port (6a) and a second port (6b) are formed in the pump case (6).
- the first port (6a) communicates with the first chamber (S1).
- the first port (6a) is connected to the low temperature side flow path (2a).
- the second port (6b) communicates with the second chamber (S2).
- the second port (6b) is connected to the high temperature side flow path (2b).
- the piston (7) is driven by a drive mechanism (not shown).
- the piston (7) moves to the first port (6a) side.
- the volume of the first chamber (S1) decreases and the volume of the second chamber (S2) increases.
- the heat medium in the first chamber (S1) is discharged through the first port (6a) to the low temperature side flow path (2a).
- the heat medium in the high temperature side flow path (2b) is sucked into the second chamber (S2) through the second port (6b).
- the piston (7) moves to the second port (6b) side.
- the volume of the second chamber (S2) decreases and the volume of the first chamber (S1) increases.
- the heat medium in the second chamber (S2) is discharged through the second port (6b) to the high temperature side flow path (2b).
- the heat medium in the low temperature side flow path (2a) is sucked into the first chamber (S1) through the first port (6a).
- the refrigerator (1) has a control section (8).
- a control section (8) controls the operation of the pump (5) and the magnetic refrigerator (10) in accordance with a predetermined operation command.
- the control unit (8) is configured using a microcomputer and a memory device (specifically, a semiconductor memory) that stores software for operating the microcomputer.
- the magnetic refrigerator (10) includes a magnetic working material (11), a magnetic field applying section (20), and a rotating mechanism (15).
- the magnetic working material (11) generates heat when a magnetic field is applied.
- the magnetic working material (11) absorbs heat when the magnetic field is removed.
- the magnetic working material (11) also generates heat as the applied magnetic field becomes stronger.
- the magnetic working material (11) also absorbs heat when the applied magnetic field weakens.
- Materials for the magnetic working substance (11) include, for example, Gd5 ( Ge0.5Si0.5 ) 4 , La( Fe1 - xSix)13, La(Fe1-xCoxSiy ) 13 , La ( Fe 1-x Si x ) 13 H y , Mn(As 0.9 Sb 0.1 ) and the like can be used.
- a plurality of magnetic working materials (11) are arranged at intervals in the circumferential direction.
- eight substantially fan-shaped magnetic working substances (11) are arranged at equal intervals in the circumferential direction.
- a tubular portion (12) is arranged radially inward of the magnetic working substance (11).
- the cylindrical portion (12) is composed of a cylindrical member extending in the axial direction.
- a plurality of magnetic working substances (11) are attached to the outer peripheral surface of the tubular portion (12).
- the rotating mechanism (15) has a rotating shaft (16) and a motor (17).
- the rotating shaft (16) is connected to a motor (17).
- the motor (17) rotates the rotating shaft (16).
- a magnetic field applying section (20) is connected to the rotating shaft (16).
- the rotary shaft (16) is inserted into the tubular portion (12).
- the magnetic field application unit (20) rotates around the axis along with the rotating shaft (16), while the magnetic working substance (11) stops.
- the magnetic field applying section (20) rotates relative to the magnetic working material (11).
- the magnetic field applying unit (20) is arranged axially away from the magnetic working material (11).
- the magnetic field applying section (20) applies a magnetic field to the magnetic working substance (11).
- the magnetic field applying section (20) has a core (21) (first member), a first magnet (25), and a second magnet (26).
- the core (21) has a central portion (22) and a plurality of protrusions (23).
- the central portion (22) is composed of a tubular member extending in the axial direction.
- a rotating shaft (16) is fitted in the central portion (22).
- the rotating shaft (16) is connected to the central portion (22) of the core (21). Note that the central portion (22) does not have to be made of a magnetic material.
- the multiple protrusions (23) are made of a magnetic material.
- the plurality of protrusions (23) protrude radially outward from the central portion (22).
- the plurality of projections (23) are circumferentially spaced apart.
- four substantially fan-shaped protrusions (23) are arranged at regular intervals in the circumferential direction.
- the protrusion (23) is axially spaced from the magnetic working material (11).
- the radially outer circumferential width of the protrusion (23) of the core (21) is greater than the radially outer circumferential width of the magnetic working material (11).
- the interval between adjacent protrusions (23) is set to be at least twice the interval between adjacent magnetic working substances (11).
- a first magnet (25) and a second magnet (26) are arranged between the magnetic working material (11) and the protrusion (23) of the core (21). .
- the first magnet (25) and the second magnet (26) apply a magnetic field to the magnetic working material (11) so that the magnetic flux flows in the in-plane direction of the magnetic working material (11).
- first magnet (25) and the second magnet (26) radially extend along both circumferential sides of the protrusion (23) when viewed from the axial direction (see FIG. 4).
- the first magnet (25) and the second magnet (26) have a radially outer magnet width larger than a radially inner magnet width.
- the first magnet (25) is arranged so that the side of the magnetic working material (11) (upper side in FIG. 5) is the N pole, and the side of the protrusion (23) of the core (21) (lower side in FIG. 5) is the S pole. placed.
- the second magnet (26) is arranged so that the S pole is on the side of the magnetic working material (11) (upper side in FIG. 5) and the N pole is on the side of the protrusion (23) of the core (21) (lower side in FIG. 5). placed.
- the positional relationship between the N pole and S pole of the first magnet (25) and the second magnet (26) may be reversed.
- the first magnet (25) and the second magnet (26) rotate relative to the magnetic working material (11) in the circumferential direction together with the core (21).
- magnetic flux flows in the in-plane direction of the magnetic working material (11).
- the flow of magnetic flux is indicated by dashed arrow lines.
- the first magnet (25) and the second magnet (26) extend along both sides of the magnetic working material (11) in the circumferential direction when the magnetic working material (11) in which the magnetic flux is flowing is viewed from the axial direction. placed.
- the magnetic field applying section (20) applies a magnetic field to the magnetic working material (11).
- magnetic flux flows from the first magnet (25) toward the magnetic working material (11).
- magnetic flux flows along the circumferential direction inside the magnetic working material (11) from the first magnet (25) toward the second magnet (26).
- magnetic flux flows along the circumferential direction inside the projection (23) from the second magnet (26) toward the first magnet (25).
- the magnetic working material (11) to which the magnetic field is applied generates heat.
- the magnetic field applying section (20) is rotated to bring the first magnet (25) and the second magnet (26) to face the adjacent magnetic working material (11).
- the magnetic working material (11) to which the magnetic field was first applied absorbs heat as the magnetic field is removed.
- the adjacent magnetic working material (11) generates heat when a magnetic field is applied.
- a refrigerating device (1) alternately and repeatedly performs a heating operation and a cooling operation.
- the period of switching between the heating operation and the cooling operation is set to, for example, about 0.1 second to 1 second.
- the pump (5) performs the first operation and the magnetic field application section (20) performs the first magnetic field application operation. That is, in the heating operation, the heat medium is discharged from the first port (6a) of the pump (5). At the same time, a magnetic field is applied to the magnetic working material (11).
- the heat medium in the low-temperature side flow path (2a) is adjusted to the temperature control flow of the magnetic refrigeration system (10). into the road (10a).
- the heat medium flowing through the temperature control channel (10a) is heated by the magnetic working substance (11).
- the heat medium heated in the temperature control channel (10a) flows out to the high temperature side channel (2b) and flows through the high temperature side heat exchanger (4).
- the high-temperature heat medium heats a predetermined heating target (eg, secondary refrigerant, air, etc.).
- a predetermined heating target eg, secondary refrigerant, air, etc.
- the heat medium in the high temperature side flow path (2b) is sucked into the second chamber (S2) through the second port (6b) of the pump (5).
- the pump (5) performs the second operation and the magnetic field application section (20) performs the second magnetic field application operation. That is, in the heating operation, the magnetic field of the magnetic working material (11) is removed at the same time that the heat medium is discharged from the second port (6b) of the pump (5).
- the heat medium in the high temperature side flow path (2b) is adjusted to the temperature control flow of the magnetic refrigerator (10). into the road (10a).
- the magnetic working material (11) draws heat from its surroundings. Therefore, the heat medium flowing through the temperature control channel (10a) is cooled by the magnetic working substance (11).
- the heat medium cooled in the temperature control channel (10a) flows out to the low temperature side channel (2a) and flows through the low temperature side heat exchanger (3).
- a predetermined cooling object eg, secondary refrigerant, air, etc.
- the heat medium in the low temperature side flow path (2a) is sucked into the first chamber (S1) through the first port (6a) of the pump (5).
- the magnetic field applying section (20) has the first member (21) (core), the first magnet (25) and the second magnet (26).
- the first member (21) is axially spaced from the magnetic working material (11).
- a first magnet (25) and a second magnet (26) are positioned between the first member (21) and the magnetic working material (11).
- the first magnet (25) and the second magnet (26) apply a magnetic field such that magnetic flux flows in the in-plane direction of the magnetic working material (11).
- the first magnet (25) and the second magnet (26) are configured to move relative to the magnetic working material (11) in the circumferential direction.
- the length of the magnetic path is shortened, so the overall device can be made compact and the magnetic flux density can be improved.
- assembly becomes easier than handling a single magnet with strong magnetic force.
- the first magnet (25) and the second magnet (26) are arranged such that when the magnetic working substance (11) in which the magnetic flux is flowing is viewed from the axial direction, the magnetic working substance (11) are arranged along both sides in the circumferential direction of the .
- the magnetic flux can flow along the circumferential direction of the magnetic working material (11). Moreover, it can be assembled using magnets of the same shape.
- the first magnet (25) and the second magnet (26) have a magnet width on the radially outer side that is larger than that on the radially inner side.
- the magnetic field strength in the magnetic working material (11) can be made constant by adjusting the magnet width according to the magnetic path length.
- the magnetic refrigerator (10) and the heat medium circuit (2) that exchanges heat with the magnetic refrigerator (10) are provided.
- a refrigerator (1) having a magnetic refrigerator (10) can be provided.
- the magnetic working material (11) may be provided with a yoke (13).
- the magnetic working material (11) is provided with a yoke (13) having a higher magnetic permeability than the magnetic working material (11).
- the yoke (13) is arranged along both sides overlapping the first magnet (25) and the second magnet (26) when viewed in the axial direction.
- the first magnet (25) and the second magnet (26) are arranged along both circumferential sides of the protrusion (23) of the core (21). Therefore, the yokes (13) are arranged along both circumferential sides of the magnetic working material (11).
- magnetic flux flows from the first magnet (25) toward the left yoke (13) in FIG.
- a magnetic flux flows along the circumferential direction inside the magnetic working material (11) from the left yoke (13) toward the right yoke (13).
- Magnetic flux flows from the right yoke (13) toward the second magnet (26).
- Magnetic flux flows along the circumferential direction inside the protrusion (23) of the core (21) from the second magnet (26) toward the first magnet (25).
- a magnetic field can be uniformly applied to the magnetic working material (11) by causing the magnetic flux to flow through the yokes (13) on both sides of the magnetic working material (11).
- the magnetic refrigerator (10) includes a magnetic working substance (11), a magnetic field applying section (20), and a rotating mechanism (15).
- the magnetic field applying unit (20) is arranged axially away from the magnetic working material (11).
- the magnetic field applying section (20) applies a magnetic field to the magnetic working substance (11).
- the magnetic field applying section (20) has a core (21), a first magnet (25), and a second magnet (26).
- the core (21) has a central portion (22) and a plurality of protrusions (23).
- a first magnet (25) and a second magnet (26) are arranged between the magnetic working material (11) and the protrusion (23) of the core (21).
- the first magnet (25) and the second magnet (26) apply a magnetic field to the magnetic working material (11) so that the magnetic flux flows in the in-plane direction of the magnetic working material (11).
- the first magnet (25) and the second magnet (26) radially extend along both circumferential sides of the protrusion (23) when viewed in the axial direction (see FIG. 9).
- the first magnet (25) and the second magnet (26) are formed in a substantially rectangular shape when viewed from the axial direction. That is, the first magnet (25) and the second magnet (26) are formed to have the same magnet width when viewed in the axial direction over the entire length in the radial direction. Thereby, magnets having the same shape can be used as the first magnet (25) and the second magnet (26).
- the first magnet (25) is arranged so that the side of the magnetic working substance (11) (upper side in FIG. 10) is the N pole, and the side of the protrusion (23) of the core (21) (the lower side in FIG. 10) is the S pole. placed.
- the second magnet (26) is arranged so that the side of the magnetic working substance (11) (upper side in FIG. 10) is the S pole, and the side of the protrusion (23) of the core (21) (the lower side in FIG. 10) is the N pole. placed.
- the positional relationship between the N pole and S pole of the first magnet (25) and the second magnet (26) may be reversed.
- the first magnet (25) and the second magnet (26) rotate relative to the magnetic working material (11) in the circumferential direction together with the core (21).
- magnetic flux flows in the in-plane direction of the magnetic working material (11).
- the flow of magnetic flux is indicated by dashed arrow lines.
- the first magnet (25) and the second magnet (26) extend along both sides of the magnetic working material (11) in the circumferential direction when the magnetic working material (11) in which the magnetic flux is flowing is viewed from the axial direction. placed.
- the magnetic field applying section (20) applies a magnetic field to the magnetic working substance (11).
- the magnetic working material (11) may be provided with a yoke (13).
- the magnetic working material (11) is provided with a yoke (13) having a higher magnetic permeability than the magnetic working material (11).
- the yoke (13) is arranged along both sides overlapping the first magnet (25) and the second magnet (26) when viewed in the axial direction.
- the first magnet (25) and the second magnet (26) are arranged along both circumferential sides of the protrusion (23) of the core (21). Therefore, the yokes (13) are arranged along both circumferential sides of the magnetic working material (11).
- the magnetic field application section (20) may have a third magnet (27).
- a first magnet (25), a second magnet (26), a second 3 magnets (27) are arranged.
- the first magnet (25), the second magnet (26), and the third magnet (27) apply a magnetic field to the magnetic working material (11) so that the magnetic flux flows in the in-plane direction of the magnetic working material (11). is applied.
- first magnet (25) and the second magnet (26) radially extend along both circumferential sides of the protrusion (23) when viewed from the axial direction (see FIG. 12).
- the third magnet (27) is arranged between the first magnet (25) and the second magnet (26) when viewed in the axial direction.
- the first magnet (25), the second magnet (26), and the third magnet (27) are formed in a substantially rectangular shape when viewed from the axial direction.
- the first magnet (25), the second magnet (26), and the third magnet (27) have the same magnet width when viewed in the axial direction over the entire length in the radial direction.
- the first magnet (25) and the second magnet (26) have an S pole on the side of the magnetic working material (11) (upper side in FIG. 13), and the side of the protrusion (23) of the core (21) (lower side in FIG. 13). is arranged to be the N pole.
- the third magnet (27) is arranged so that the side of the magnetic working material (11) (upper side in FIG. 13) is the N pole, and the side of the protrusion (23) of the core (21) (lower side in FIG. 13) is the S pole. placed.
- the positional relationship of the N pole and S pole in the 1st magnet (25), the 2nd magnet (26), and the 3rd magnet (27) can be changed suitably.
- the first magnet (25), the second magnet (26), and the third magnet (27) rotate relative to the magnetic working substance (11) in the circumferential direction together with the core (21).
- first magnet (25), the second magnet (26), and the third magnet (27) face the magnetic working substance (11), magnetic flux flows in the in-plane direction of the magnetic working substance (11).
- the flow of magnetic flux is indicated by dashed arrow lines.
- magnetic flux flows from the third magnet (27) toward the magnetic working material (11).
- magnetic flux flows along the circumferential direction inside the magnetic working material (11) from the third magnet (27) toward the first magnet (25) and the second magnet (26).
- magnetic flux flows along the inside of the protruding portion (23) in the circumferential direction from the first magnet (25) and the second magnet (26) toward the third magnet (27). flows.
- the magnetic field applying section (20) has the third magnet (27).
- the third magnet (27) is arranged between the first magnet (25) and the second magnet (26) when viewed in the axial direction.
- the magnetic field strength in the magnetic working material (11) can be made strong and constant.
- the magnetic field applying section (20) has a core (21), a first magnet (25) and a second magnet (26).
- a first magnet (25) and a second magnet (26) are arranged between the magnetic working material (11) and the protrusion (23) of the core (21).
- the first magnet (25) and the second magnet (26) apply a magnetic field to the magnetic working material (11) so that the magnetic flux flows in the in-plane direction of the magnetic working material (11).
- first magnet (25) and the second magnet (26) are arranged along both radial sides of the protrusion (23) when viewed from the axial direction (see FIG. 14).
- the first magnet (25) extends along the radially outer side of the protrusion (23).
- the second magnet (26) extends along the radially inner side of the protrusion (23).
- the first magnet (25) is arranged so that the side of the magnetic working material (11) (upper side in FIG. 15) is the N pole, and the side of the projection (23) of the core (21) (lower side in FIG. 15) is the S pole. placed.
- the second magnet (26) is arranged so that the magnetic working material (11) side (upper side in FIG. 15) is the S pole and the projection (23) side of the core (21) (the lower side in FIG. 15) is the N pole. placed.
- the positional relationship between the N pole and S pole of the first magnet (25) and the second magnet (26) may be reversed.
- the first magnet (25) and the second magnet (26) rotate relative to the magnetic working material (11) in the circumferential direction together with the core (21).
- magnetic flux flows in the in-plane direction of the magnetic working material (11).
- the flow of magnetic flux is indicated by dashed arrow lines.
- the first magnet (25) and the second magnet (26) extend along both sides of the magnetic working material (11) in the radial direction when the magnetic working material (11) in which the magnetic flux is flowing is viewed from the axial direction. placed.
- the magnetic field applying section (20) applies a magnetic field to the magnetic working substance (11).
- magnetic flux flows from the first magnet (25) toward the magnetic working material (11).
- magnetic flux flows radially inside the magnetic working material (11) from the first magnet (25) toward the second magnet (26).
- magnetic flux flows radially inside the protrusion (23) from the second magnet (26) toward the first magnet (25).
- the first magnet (25) and the second magnet (26) are arranged such that when the magnetic working substance (11) in which the magnetic flux is flowing is viewed from the axial direction, the magnetic working substance (11) ) along both sides in the radial direction, respectively.
- the magnetic flux can flow along the radial direction of the magnetic working material (11).
- the magnetic working material (11) may be provided with a yoke (13).
- the magnetic working material (11) is provided with a yoke (13) having a higher magnetic permeability than the magnetic working material (11).
- the yoke (13) is arranged along both sides overlapping the first magnet (25) and the second magnet (26) when viewed in the axial direction.
- the first magnet (25) and the second magnet (26) are arranged along both radial sides of the protrusion (23) of the core (21). Therefore, the yokes (13) are arranged along both radial sides of the magnetic working material (11).
- a plurality of magnetic working substances (11) are arranged at intervals in the circumferential direction.
- eight substantially rectangular magnetic working materials (11) are arranged at regular intervals in the circumferential direction.
- a first magnet (25) and a second magnet (26) are arranged between the magnetic working material (11) and the protrusion (23) of the core (21).
- the first magnet (25) and the second magnet (26) apply a magnetic field to the magnetic working material (11) so that the magnetic flux flows in the in-plane direction of the magnetic working material (11).
- first magnet (25) and the second magnet (26) extend radially along both circumferential sides of the protrusion (23) when viewed from the axial direction (see FIG. 18).
- the first magnet (25) and the second magnet (26) have a radially outer magnet width larger than a radially inner magnet width.
- the first magnet (25) and the second magnet (26) are at least spaced apart from each other in the circumferential direction of the magnetic working material (11) when the magnetic working material (11) in which the magnetic flux is flowing is viewed from the axial direction. They are arranged so that they partially overlap each other.
- the magnetic field applying section (20) applies a magnetic field to the magnetic working material (11).
- first magnet (25) and the second magnet (26) are rotationally moved together with the core (21) in the above embodiment, it is not limited to this form.
- the magnetic working substance (11) is arranged on both pole sides of the first magnet (25) and the second magnet (26). good too. In this way, by rotating the first magnet (25) and the second magnet (26) relative to the magnetic working substances (11), the number of magnetic working substances (11) to which the magnetic field is applied at the same time can be increased.
- the present disclosure is useful for magnetic refrigerators and refrigerators.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Hard Magnetic Materials (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
Description
実施形態1について説明する。
低温側熱交換器(3)は、磁気冷凍装置(10)で冷却された熱媒体と、所定の冷却対象(例えば、二次冷媒や空気など)とを熱交換させる。高温側熱交換器(4)は、磁気冷凍装置(10)で加熱された熱媒体と、所定の加熱対象(例えば、二次冷媒や空気など)とを熱交換させる。
ポンプ(5)は、第1動作と、第2動作とを交互に繰り返し行う。第1動作では、熱媒体回路(2)の熱媒体を図1で左方向に搬送する。第2動作では、熱媒体回路(2)の熱媒体を図1で右方向に搬送する。ポンプ(5)は、熱媒体回路(2)の熱媒体を往復的に流動させる搬送機構を構成する。
冷凍装置(1)は、制御部(8)を備える。制御部(8)は、所定の運転指令に応じて、ポンプ(5)及び磁気冷凍装置(10)の動作を制御する。制御部(8)は、マイクロコンピュータと、マイクロコンピュータを動作させるためのソフトウエアを格納するメモリデバイス(具体的には半導体メモリ)とを用いて構成される。
図2及び図3にも示すように、磁気冷凍装置(10)は、磁気作業物質(11)と、磁場印加部(20)と、回転機構(15)とを備える。
冷凍装置(1)の基本的な運転動作について、図1を用いて説明する。冷凍装置(1)は、加熱動作と、冷却動作とを交互に繰り返し行う。加熱動作と冷却動作とを切り換える周期は、例えば、0.1秒から1秒程度に設定される。
加熱動作では、ポンプ(5)が第1動作を行うとともに、磁場印加部(20)が第1磁場印加動作を行う。つまり、加熱動作では、ポンプ(5)の第1ポート(6a)から熱媒体が吐出される。同時に、磁気作業物質(11)に磁場が印加される。
冷却動作では、ポンプ(5)が第2動作を行うとともに、磁場印加部(20)が第2磁場印加動作を行う。つまり、加熱動作では、ポンプ(5)の第2ポート(6b)から熱媒体が吐出されると同時に、磁気作業物質(11)の磁場が取り除かれる。
本実施形態の特徴によれば、磁場印加部(20)は、第1部材(21)(コア)と、第1磁石(25)及び第2磁石(26)とを有する。第1部材(21)は、磁気作業物質(11)に対して軸方向に離れて配置される。第1磁石(25)及び第2磁石(26)は、第1部材(21)と磁気作業物質(11)との間に配置される。第1磁石(25)及び第2磁石(26)は、磁気作業物質(11)の面内方向に磁束が流れるように磁場を印加する。第1磁石(25)及び第2磁石(26)は、磁気作業物質(11)に対して周方向に相対移動するように構成される。
実施形態1において、磁気作業物質(11)にヨーク(13)を設けるようにしてもよい。
実施形態2について説明する。
〈変形例1〉
実施形態2において、磁気作業物質(11)にヨーク(13)を設けるようにしてもよい。
実施形態2において、磁場印加部(20)が第3磁石(27)を有する構成としてもよい。
本変形例の特徴によれば、磁場印加部(20)は、第3磁石(27)を有する。第3磁石(27)は、軸方向から見て、第1磁石(25)と第2磁石(26)との間に配置される。
実施形態3について説明する。
本実施形態の特徴によれば、第1磁石(25)及び前記第2磁石(26)は、磁束が流れている磁気作業物質(11)を軸方向から見た場合に、磁気作業物質(11)の径方向の両辺に沿ってそれぞれ配置される。
〈変形例〉
実施形態3において、磁気作業物質(11)にヨーク(13)を設けるようにしてもよい。
実施形態4について説明する。
前記実施形態については、以下のような構成としてもよい。
2 熱媒体回路
10 磁気冷凍装置
11 磁気作業物質
13 ヨーク
20 磁場印加部
21 第1部材(コア)
25 第1磁石
26 第2磁石
27 第3磁石
Claims (7)
- 周方向に間隔をあけて配置された複数の磁気作業物質(11)と、
前記磁気作業物質(11)に対して周方向に相対移動するとともに、前記磁気作業物質(11)に対して磁場を印加する磁場印加部(20)と、を備え、
前記磁場印加部(20)は、
前記磁気作業物質(11)に対して軸方向に離れて配置された第1部材(21)と、
前記第1部材(21)と前記磁気作業物質(11)との間に配置され且つ前記磁気作業物質(11)の面内方向に磁束が流れるように磁場を印加する第1磁石(25)及び第2磁石(26)と、を有し、
前記第1磁石(25)及び前記第2磁石(26)は、前記磁気作業物質(11)に対して周方向に相対移動するように構成される
磁気冷凍装置。 - 請求項1の磁気冷凍装置において、
前記第1磁石(25)及び前記第2磁石(26)は、磁束が流れている前記磁気作業物質(11)を軸方向から見た場合に、前記磁気作業物質(11)の周方向の両辺に沿ってそれぞれ配置される
磁気冷凍装置。 - 請求項2の磁気冷凍装置において、
前記第1磁石(25)及び前記第2磁石(26)は、径方向外側の磁石幅が、径方向内側の磁石幅よりも大きい
磁気冷凍装置。 - 請求項1の磁気冷凍装置において、
前記第1磁石(25)及び前記第2磁石(26)は、磁束が流れている前記磁気作業物質(11)を軸方向から見た場合に、前記磁気作業物質(11)の径方向の両辺に沿ってそれぞれ配置される
磁気冷凍装置。 - 請求項1~4のいずれか1つの磁気冷凍装置において、
前記磁場印加部(20)は、第3磁石(27)を有し、
前記第3磁石(27)は、軸方向から見て、前記第1磁石(25)と前記第2磁石(26)との間に配置される
磁気冷凍装置。 - 請求項1~5のいずれか1つの磁気冷凍装置において、
前記磁気作業物質(11)には、前記磁気作業物質(11)よりも透磁率の高いヨーク(13)が設けられ、
前記ヨーク(13)は、軸方向から見て、前記第1磁石(25)及び前記第2磁石(26)と重なり合う両辺に沿って配置される
磁気冷凍装置。 - 請求項1~6のいずれか1つの磁気冷凍装置(10)と、
前記磁気冷凍装置(10)と熱交換する熱媒体回路(2)と、を備える
冷凍装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280023069.9A CN117043525A (zh) | 2021-03-29 | 2022-03-17 | 磁制冷装置及制冷装置 |
EP22780168.5A EP4306875A1 (en) | 2021-03-29 | 2022-03-17 | Magnetic refrigeration device and regrigeration device |
US18/372,519 US20240011675A1 (en) | 2021-03-29 | 2023-09-25 | Magnetic refrigerator and refrigeration apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021054795A JP7456965B2 (ja) | 2021-03-29 | 2021-03-29 | 磁気冷凍装置及び冷凍装置 |
JP2021-054795 | 2021-03-29 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/372,519 Continuation US20240011675A1 (en) | 2021-03-29 | 2023-09-25 | Magnetic refrigerator and refrigeration apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022209948A1 true WO2022209948A1 (ja) | 2022-10-06 |
Family
ID=83459170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/012220 WO2022209948A1 (ja) | 2021-03-29 | 2022-03-17 | 磁気冷凍装置及び冷凍装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240011675A1 (ja) |
EP (1) | EP4306875A1 (ja) |
JP (1) | JP7456965B2 (ja) |
CN (1) | CN117043525A (ja) |
WO (1) | WO2022209948A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57110064A (en) * | 1980-11-15 | 1982-07-08 | Bosch Gmbh Robert | Magnet generator for ignition device for internal combustion engine |
JP2010112606A (ja) * | 2008-11-05 | 2010-05-20 | Toshiba Corp | 磁気式温度調整装置 |
JP2011069508A (ja) * | 2009-09-24 | 2011-04-07 | Toshiba Corp | 磁気温度調整装置 |
WO2019150817A1 (ja) | 2018-01-31 | 2019-08-08 | サンデンホールディングス株式会社 | 磁気ヒートポンプ装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4557874B2 (ja) | 2005-11-30 | 2010-10-06 | 株式会社東芝 | 磁気冷凍機 |
-
2021
- 2021-03-29 JP JP2021054795A patent/JP7456965B2/ja active Active
-
2022
- 2022-03-17 WO PCT/JP2022/012220 patent/WO2022209948A1/ja active Application Filing
- 2022-03-17 EP EP22780168.5A patent/EP4306875A1/en active Pending
- 2022-03-17 CN CN202280023069.9A patent/CN117043525A/zh active Pending
-
2023
- 2023-09-25 US US18/372,519 patent/US20240011675A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57110064A (en) * | 1980-11-15 | 1982-07-08 | Bosch Gmbh Robert | Magnet generator for ignition device for internal combustion engine |
JP2010112606A (ja) * | 2008-11-05 | 2010-05-20 | Toshiba Corp | 磁気式温度調整装置 |
JP2011069508A (ja) * | 2009-09-24 | 2011-04-07 | Toshiba Corp | 磁気温度調整装置 |
WO2019150817A1 (ja) | 2018-01-31 | 2019-08-08 | サンデンホールディングス株式会社 | 磁気ヒートポンプ装置 |
Also Published As
Publication number | Publication date |
---|---|
EP4306875A1 (en) | 2024-01-17 |
JP7456965B2 (ja) | 2024-03-27 |
CN117043525A (zh) | 2023-11-10 |
JP2022152137A (ja) | 2022-10-12 |
US20240011675A1 (en) | 2024-01-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR102086373B1 (ko) | 자기 냉각 장치 및 그 제어방법 | |
CA2941237C (en) | Magnetic regenerator unit and magnetic cooling system with the same | |
JP4284183B2 (ja) | 回転磁石式磁気冷凍機 | |
US8875522B2 (en) | Magnetic heat pump apparatus | |
KR20130084026A (ko) | 자기 냉각 장치 및 그 제어 방법 | |
CN110392810A (zh) | 磁工作件以及使用该磁工作件的磁热泵装置 | |
WO2022209948A1 (ja) | 磁気冷凍装置及び冷凍装置 | |
WO2022209610A1 (ja) | 磁気冷凍装置及び冷凍装置 | |
WO2022209949A1 (ja) | 磁気冷凍装置及び冷凍装置 | |
JP7111968B2 (ja) | 磁気冷凍装置 | |
JP5821889B2 (ja) | 熱磁気サイクル装置 | |
JP6583143B2 (ja) | 熱磁気サイクル装置 | |
WO2024070690A1 (ja) | 冷凍装置及び冷凍機 | |
JP6361413B2 (ja) | 磁気ヒートポンプ装置 | |
JP2024048522A (ja) | 磁気冷凍装置及び冷凍機 | |
JP6601300B2 (ja) | 熱磁気サイクル装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22780168 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280023069.9 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022780168 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2022780168 Country of ref document: EP Effective date: 20231011 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |