Abstract: A motor 1 according to one embodiment of the present disclosure includes a rotor 10 configured to freely rotate around a rotary shaft member 13; a stator 20, 320 including a stator unit 21 of a claw-pole type, the stator unit including a winding wire 212 that is annularly wound around the rotary shaft member 13 and a stator core 211 provided so as to surround the winding wire 212, the stator core 211 having a through hole piercing the stator core 211 around the rotary shaft member 13; and a first bearing holder 24B provided at one end side of the stator 20 in an axial direction of the rotary shaft member 13 and configured to hold a first bearing 25 rotatably supporting the rotary shaft member 13, wherein the first bearing 25 and the first bearing holder 24B are arranged on an outside in the axial direction with respect to the stator core 211, and an outer diameter of the first bearing 25 or the first bearing holder 24B is larger than an inner diameter of the through hole of the rotary shaft member 13.

Abstract: A motor 1 according to an embodiment of the present disclosure includes a rotor 10 configured to freely rotate around a rotation axis AX; and a stator 20 arranged inside the rotor 10 and including a stator unit 21 of a claw-pole type, the stator unit including a winding wire 212 that is annularly wound around the rotation axis AX and a stator core 211 provided so as to surround the winding wire, wherein the stator 20 includes an inner space 24A around the rotation axis AX and in communication with an outer side of the rotor 10, such that heat can be radiated to the inner space 24A.

Abstract: A rotor includes a core and two or more ribs. The core has a through hole group that includes three or more through holes arranged in a circumferential direction. The through hole group is formed through a predetermined magnetic pole. The two or more ribs are configured as portions of the core, with each rib being interposed between adjacent through holes. A first of the ribs has a first inclination with respect to a magnetic pole centerline. A second of the ribs has a second inclination with respect to the magnetic pole centerline. The second inclination is larger than the first inclination. The magnetic pole centerline is a straight line that passes through a radial center line of the magnetic pole and an axial center of the rotor. The first rib is narrower than the second rib.

Abstract: A magnetic refrigerator includes a plurality of magnetic working substances arranged at predetermined first intervals in a first direction, and a magnetic field application unit that causes a relative movement with respect to the magnetic working substances in the first direction, and applies a magnetic field to the magnetic working substances. The magnetic field application unit includes one magnetic field generator, a first core provided closer to one magnetic pole of the magnetic field generator, and a second core provided closer to an other magnetic pole of the magnetic field generator. Three or more magnetic gaps are provided between the first core and the second core, and arranged at second intervals that are twice or more the first intervals in the first direction. A refrigeration apparatus includes the magnetic refrigerator and a heating medium circuit to exchange heat with the magnetic refrigerator.

Abstract: A magnet-embedded rotating machine includes a rotor including first and second magnets, and a stator. The first magnet is radially spaced from a facing surface of the stator by a first distance or longer, and the second magnet is radially spaced from the facing surface of the stator by a second distance or longer, the second distance being longer than the first distance. Hco(A) > Hco(B), Hci(A) > Hci(B), Hco(A) > Hci(A), and {Hco(A)/Hci(A)} > {Hco(B)/Hci(B)}. Hco(A) represents a coercive force of the first magnet within a first temperature range corresponding to startup temperatures of the rotating machine. Hco(B) represents a coercive force of the first magnet within a second temperature range corresponding to steady state driving temperatures of the rotating machine. Hci(A) represents a coercive force of the second magnet within the first temperature range. Hci(B) represents a coercive force of the second magnet within the second temperature range.

Abstract: A rotary electrical device includes a rotor configured to be rotatable; and a stator disposed in a radial direction of the rotor to surround a rotation axis of the rotor. The stator includes a plurality of stator units that are stacked in an axial direction of the rotor. Each of the stator units includes a winding, a stator core that surrounds the winding, and one or more claw magnetic poles that protrude radially toward the rotor from each of two end portions in an axial direction of the stator core. The rotor includes a magnet that radially faces at least a portion of any of claw magnetic poles of the stator at a predetermined rotation position. At least one of magnet end portions in an axial direction of the magnet protrudes further in the axial direction than all of the claw magnetic poles of the stator.

Abstract: A motor includes a stator having stacking coil units with a nonmagnetic body arranged between, and a rotatable rotor. Each of the coil units includes a coil, and a stator core. The coil includes an annular winding. The stator core is arranged to surround at least part of the winding. The stator core includes projections formed on axial ends of the stator core, alternately arranged in a circumferential direction, and projecting radially toward the rotor from the axial ends. The coil includes the winding and two leads extending from the winding. At least one of a first and a second of the two leads extends between stator cores of two of the coil units. A magnet pole is arranged in one of inner and outer circumferential portions of the stator core, and the first and second leads are arranged in an other one of inner and outer circumferential portions.

Abstract: A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains is a small-GWP refrigerant.

Abstract: A rotary electric machine includes a rotor, and a stator facing the rotor with a predetermined gap interposed between the rotor and stator. The stator has a stator core formed in a substantially circular annular shape and provided with an armature slot and a field slot alternately arranged in a circumferential direction, an armature winding housed in the armature slot, and a field winding and a first field magnet housed in the field slot. The armature winding generates a rotating magnetic field to rotate the rotor by being supplied with an alternating current armature current. The field winding generates a field flux by being supplied with a direct current field current. The first field magnet changes a magnetic force by the field flux.

Abstract: A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains at least 1,2-difluoroethylene.

Abstract: A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains is a small-GWP refrigerant.

Abstract: A technique that improves cooling performance of a motor including an iron core formed of a powder magnetic core is provided. A motor 1 according to one embodiment of the present disclosure includes a stator iron core 211 formed of a powder magnetic core and an inserting member 24 disposed so as to face at least a portion of a wall surface of the stator iron core 211, the inserting member being configured to enable heat to be transferred in an axial direction. The motor 1 Includes a heat dissipation member 40 configured to enable the heat from the inserting member 24 to be transferred in the axial direction. The motor 1 includes a fixing member 30 that fixes the iron core 211 and the inserting member 24. Stress generated between the stator iron core 211 and the inserting member 24 is less than each of stress generated between the stator iron core 211 and the fixing member 30, and stress generated between the inserting member 24 and the fixing member 30.

Abstract: A magnetic field application device includes a magnetic field application unit provided with a magnetic working substance, a permanent magnet, a yoke and a coil. The magnetic field application unit applies a magnetic field to the magnetic working substance. The yoke forms at least two closed magnetic circuits, each being a closed circuit that magnetically connects both ends in a magnetization direction of the permanent magnet. The coil is capable of changing an intensity of the magnetic field applied to the magnetic working substance. The coil is provided in at least one of the closed magnetic circuits. The magnetic field application unit is disposed in at least one of the closed magnetic circuits. A magnetic flux of the permanent magnet is branched to flow through two or more of the closed magnetic circuits including the closed magnetic circuit provided with the magnetic field application unit when the coil is non-energized.

Abstract: A stator includes stator iron cores stacked in a rotor axial direction, and an interphase insulating member arranged between the stator iron cores. Each of the stator iron cores includes a circular back yoke and a stator claw magnetic pole that protrudes from the back yoke in a rotor radial direction. The interphase insulating member includes an insulating portion, arranged between adjacent ones of the stator iron cores, and a support. The stator claw magnetic pole is in contact with the support in at least one of a rotor circumferential direction and the rotor radial direction.

Abstract: A motor includes a stator, a rotor rotatable relative to the stator, and a fixing member. The fixing member includes first and second end plates, and at least one rod shaped portion. At least one of the stator and rotor includes an iron core formed by a powder magnetic core. The iron core includes a through hole extending through the iron core in an axial direction of the rotor. The first and second end plates are arranged to directly or indirectly contact end surfaces of the iron core in the axial direction. The rod shaped portion is fixed to the first and second end plates in a state in which the rod shaped portion is inserted in the through hole of the iron core, and the iron core is sandwiched by the first and second end plates in the axial direction of the rotor.

Abstract: A stator core including field slots housing field windings and armature slots housing armature windings is provided. Permanent magnets are housed in the respective armature slots. Field windings face to the permanent magnets directly or via the stator core on the outer and inner circumferential sides. A coil end of one of the armature windings straddles the predetermined one of the field slots and passes over the axial end face of each of the permanent magnets in the corresponding one of the field slots over which the coil end straddles.

Abstract: A rotor includes a core and two or more ribs. The core has a through hole group that includes three or more through holes arranged in a circumferential direction. The through hole group is formed through a predetermined magnetic pole. The two or more ribs are configured as portions of the core, with each rib being interposed between adjacent through holes. A first of the ribs has a first inclination with respect to a magnetic pole centerline. A second of the ribs has a second inclination with respect to the magnetic pole centerline. The second inclination is larger than the first inclination. The magnetic pole centerline is a straight line that passes through a radial center line of the magnetic pole and an axial center of the rotor. The first rib is narrower than the second rib.

Abstract: A fluid temperature control device includes a magnetic circuit portion and a coil waterproof structure. The magnetic circuit portion includes a magnetic working substance container containing a magnetic working substance, and a coil that applies a magnetic field to the magnetic working substance container. The magnetic working substance container allows a fluid to flow through it to exchange heat with the magnetic working substance. The coil waterproof structure hinders water generated in the magnetic working substance container from flowing to the coil.

Abstract: A magnetic field application device includes a magnetic field application unit provided with a magnetic working substance, a permanent magnet, a yoke and a coil. The magnetic field application unit applies a magnetic field to the magnetic working substance. The yoke forms at least two closed magnetic circuits, each being a closed circuit that magnetically connects both ends in a magnetization direction of the permanent magnet. The coil is capable of changing an intensity of the magnetic field applied to the magnetic working substance. The coil is provided in at least one of the closed magnetic circuits. The magnetic field application unit is disposed in at least one of the closed magnetic circuits. A magnetic flux of the permanent magnet is branched to flow through two or more of the closed magnetic circuits including the closed magnetic circuit provided with the magnetic field application unit when the coil is non-energized.

Abstract: High power of a compressor that compresses a mixed refrigerant containing at least 1,2-difluoroethylene is achieved. A compressor (100) employs an induction motor (70) as a motor that drives a compression unit (60) that compresses a mixed refrigerant containing at least 1,2-difluoroethylene, and thus, high power is enabled at comparatively low costs.