WO2018138864A1 - Stator, moteur électrique, compresseur et dispositif de réfrigération/climatisation - Google Patents

Stator, moteur électrique, compresseur et dispositif de réfrigération/climatisation Download PDF

Info

Publication number
WO2018138864A1
WO2018138864A1 PCT/JP2017/002893 JP2017002893W WO2018138864A1 WO 2018138864 A1 WO2018138864 A1 WO 2018138864A1 JP 2017002893 W JP2017002893 W JP 2017002893W WO 2018138864 A1 WO2018138864 A1 WO 2018138864A1
Authority
WO
WIPO (PCT)
Prior art keywords
yoke
iron core
tooth
axis
stator
Prior art date
Application number
PCT/JP2017/002893
Other languages
English (en)
Japanese (ja)
Inventor
馬場　和彦
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/002893 priority Critical patent/WO2018138864A1/fr
Priority to JP2018564042A priority patent/JP6656428B2/ja
Publication of WO2018138864A1 publication Critical patent/WO2018138864A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets

Definitions

  • the present invention relates to a stator, an electric motor, a compressor, and a refrigeration air conditioner.
  • JP 2014-155347 A (see paragraphs 0014 to 0016) JP 2013-546301 Gazette (see paragraph 0005)
  • Structuring the stator core with amorphous metal or nanocrystalline metal is effective in reducing iron loss.
  • amorphous metal and nanocrystalline metal have a large increase in magnetoresistance when subjected to compressive stress, when the stator core is incorporated inside the frame by shrink fitting or the like, the magnetoresistance is affected by compressive stress. This may increase the iron loss.
  • This invention was made in order to solve said subject, and it aims at providing the stator which can reduce an iron loss more effectively.
  • the stator of the present invention includes a first yoke extending in the circumferential direction centering on the axis, and first and second teeth extending from the first yoke toward the axis.
  • a first iron core made of an electromagnetic steel plate, a second yoke adjacent to the first yoke in the axial direction, and a first tooth adjacent to the first tooth and the second tooth in the axial direction.
  • a second iron core made of amorphous metal or nanocrystalline metal.
  • the first iron core is divided by a dividing surface formed between the first teeth and the second teeth in the first yoke, and connected on the outer peripheral surface side of the first yoke.
  • the distance from the axis to the outer peripheral surface of the second yoke is smaller than the distance from the axis to the outer peripheral surface of the first yoke.
  • the second iron core is made of an amorphous metal or a nanocrystalline metal, the iron loss can be reduced.
  • the first iron core is divided at the dividing surface and connected on the outer peripheral side of the first yoke, when winding the teeth, both sides sandwiching the dividing surface of the first yoke
  • the distance between the first tooth and the second tooth can be widened, and the winding work can be simplified.
  • the distance from the axis to the outer peripheral surface of the second yoke is smaller than the distance from the axis to the outer peripheral surface of the first yoke, the external force from the frame is reduced when the stator is incorporated in a frame or the like. 1 core (electromagnetic steel sheet). Therefore, the increase in the magnetic resistance of the second iron core can be suppressed, and the effect of reducing the iron loss can be enhanced.
  • FIG. 3 is a cross-sectional view showing the electric motor in the first embodiment.
  • FIG. 3 is a diagram showing a stator core, an insulator, and a winding of the electric motor in the first embodiment.
  • FIG. 3 is a cross-sectional view showing the electric motor in the first embodiment.
  • FIG. 3 is a plan view showing a first iron core in the first embodiment. It is a figure which shows the 1st division
  • FIG. FIG. 3 is a plan view showing a second iron core in the first embodiment. It is a figure which overlaps and shows the 1st division
  • FIG. 3 is a plan view showing a magnetic steel sheet for forming a first iron core in the first embodiment. It is a figure which shows the state which expand
  • FIG. 4 is a plan view showing an electromagnetic steel plate for forming a second iron core in the first embodiment.
  • FIG. 5 is a schematic diagram (A) and (B) for illustrating a winding process in the first embodiment.
  • FIG. 3 is a plan view showing a magnetic steel sheet for forming the rotor core in the first embodiment.
  • FIG. 5 is a cross-sectional view for illustrating the operation of the electric motor in the first embodiment.
  • FIG. 5 is a cross-sectional view showing an electric motor according to a first modification of the first embodiment.
  • 6 is a cross-sectional view showing an electric motor according to a second modification of the first embodiment.
  • FIG. FIG. 9 is a plan view showing a first iron core of a third modification example of the first embodiment. It is sectional drawing which shows the structure of the rotary compressor which can apply the electric motor of Embodiment 1 and each modification. It is a figure which shows the structure of the refrigerating air conditioner provided with the rotary compressor of FIG.
  • FIG. 1 is a cross-sectional view showing a configuration of an electric motor 100 according to Embodiment 1 of the present invention.
  • This electric motor 100 is a permanent magnet embedded type electric motor in which the permanent magnet 25 is embedded in the rotor 2, and is used, for example, in a rotary compressor 500 (see FIG. 18).
  • the electric motor 100 is an electric motor called an inner rotor type, and includes a stator 1 and a rotor 2 that is rotatably provided inside the stator 1.
  • FIG. 1 is a cross-sectional view of a plane orthogonal to the rotation axis (axis C1) of the rotor 2.
  • the direction of the axis C1 which is the rotation axis of the rotor 2 is simply referred to as “axial direction”. Also.
  • the circumferential direction around the axis C1 is simply referred to as “circumferential direction”.
  • the radial direction of the stator 1 and the rotor 2 around the axis C1 is simply referred to as “radial direction”.
  • the arrow C1 indicates the axial direction
  • the arrow R1 indicates the circumferential direction.
  • the stator 1 has a stator core 10 and a winding 3 wound around the stator core 10.
  • the stator core 10 has a first iron core 10A and a second iron core 10B (FIG. 3), which will be described later.
  • the stator core 10 has an annular yoke 12 centered on the axis C1 and a plurality of teeth 11 extending from the yoke 12 inward in the radial direction (that is, in the direction toward the axis C1).
  • the tooth 11 has a tooth tip 13 that faces the outer peripheral surface of the rotor 2.
  • the tooth tip portion 13 is formed so that the width (length in the circumferential direction) is wider than other portions of the tooth 11. That is, the tooth tip portion 13 has projecting portions 14 projecting in the circumferential direction on both sides in the circumferential direction.
  • nine teeth 11 are arranged at regular intervals in the circumferential direction, but the number of teeth 11 may be two or more. Between the teeth 11 adjacent to each other in the circumferential direction, a slot which is a space for arranging the winding 3 is formed.
  • stator core 10 has a configuration in which a plurality of (here, nine) divided cores 5 are connected in the circumferential direction for each tooth 11.
  • the split cores 5 are connected to each other by a connecting portion 15 provided at an end portion on the outer peripheral side of the yoke 12.
  • the connection part 15 is formed by the circular crimp part, for example.
  • the winding 3 that generates the rotating magnetic field is, for example, a magnet wire wound around the tooth 11 via an insulator 30 (FIG. 2) that is an insulating portion.
  • the number of turns and the diameter (wire diameter) of the winding 3 are determined in accordance with required characteristics (rotation speed, torque, etc.), applied voltage, and slot cross-sectional area.
  • the winding 3 is wound by concentrated winding and connected by Y connection.
  • FIG. 2 is a diagram showing the stator core 10 (divided core 5), the insulator 30, and the winding 3.
  • the insulator 30 is formed on the outer peripheral surface of the peripheral wall portion 31 formed on both side surfaces 111 in the circumferential direction of the tooth 11, the outer wall portion 32 formed on the inner peripheral surface 121 of the yoke 12, and the protruding portion 14 of the tooth 11.
  • the inner wall portion 33 is formed.
  • the winding 3 is disposed in a region surrounded by the peripheral wall portion 31, the outer wall portion 32, and the inner wall portion 33. Moreover, the surrounding wall part 31 of the insulator 30 is also formed in the both end surfaces in the axial direction of the teeth 11 (refer FIG. 3). For example, a magnet wire having a diameter of 1.0 mm is wound 80 turns on each tooth 11 via an insulator 30 to form a winding 3.
  • the rotor 2 includes a cylindrical rotor core 21, a permanent magnet 25 attached to the rotor core 21, and a shaft 60 disposed at the center of the rotor core 21.
  • the shaft 60 is, for example, the shaft of the rotary compressor 500 (FIG. 18).
  • the rotor core 21 is formed by laminating a plurality of electromagnetic steel plates in the axial direction and fastening both ends in the axial direction with fixing members 41 and 42 (FIG. 3).
  • the thickness tr of the electrical steel sheet constituting the rotor core 21 is, for example, 0.35 to 0.5 mm, and the thickness t1 (0.25 to 0) of the electrical steel sheet of the first iron core 10A (FIG. 3) described later. .35 mm) or more.
  • a plurality (six in this case) of magnet insertion holes 22 into which the permanent magnets 25 are inserted are formed along the outer peripheral surface of the rotor core 21.
  • the magnet insertion hole 22 is a through hole that penetrates the rotor core 21 in the axial direction.
  • the number of magnet insertion holes 22 (that is, the number of magnetic poles) is not limited to 6, but may be 2 or more. There is a gap between adjacent magnet insertion holes 22.
  • the permanent magnet 25 is a flat plate-like member that is long in the axial direction, has a width in the circumferential direction of the rotor core 21, and has a thickness in the radial direction.
  • the thickness of the permanent magnet 25 is 2 mm, for example.
  • the permanent magnet 25 is composed of, for example, a rare earth magnet mainly composed of neodymium (Nd), iron (Fe), and boron (B).
  • the permanent magnet 25 is magnetized in the thickness direction.
  • one permanent magnet 25 is arranged in one magnet insertion hole 22, but a plurality of permanent magnets 25 may be arranged in the circumferential direction in one magnet insertion hole 22.
  • the plurality of permanent magnets 25 in the same magnet insertion hole 22 are magnetized such that the same poles are directed radially outward.
  • a flux barrier (leakage flux suppression hole) 23 is formed at both ends in the circumferential direction of the magnet insertion hole 22.
  • the flux barrier 23 suppresses leakage magnetic flux between adjacent permanent magnets 25.
  • the core portion between the flux barrier 23 and the outer periphery of the rotor core 21 is a thin portion in order to suppress a short circuit of magnetic flux between the adjacent permanent magnets 25.
  • the thickness of the thin portion is preferably the same as the thickness of the electromagnetic steel plate constituting the rotor core 21.
  • FIG. 3 is a cross-sectional view showing a configuration of the electric motor 100 on a plane including the axis C1.
  • the stator core 10 has a first iron core 10A composed of a laminated body of electromagnetic steel plates and a second iron core 10B composed of an amorphous metal or a nanocrystalline metal.
  • the first iron core 10A and the second iron core 10B are alternately arranged in the axial direction (the direction of the axis C1).
  • the first iron core 10 ⁇ / b> A is disposed at at least both axial ends of the stator core 10.
  • the first iron cores 10A are respectively disposed on both sides and the center of the stator iron core 10 in the axial direction.
  • the 2nd iron core 10B is arrange
  • the thickness (axial length) of the first iron core 10A disposed at one axial end portion (the upper end portion in FIG. 3) of the stator core 10 is L1, and the thickness of the second iron core 10B adjacent thereto is L1.
  • the thickness of the first iron core 10A disposed at the center in the axial direction of the stator core 10 is L3, and the thickness of the second iron core 10B adjacent thereto is L4.
  • the thickness of the first iron core 10A disposed at (the lower end in FIG. 3) is L5.
  • the total L0 of the thickness of the first iron core 10A and the thickness of the second iron core 10B is the same as the axial length L6 of the rotor iron core 21 here, but is not necessarily the same ( (See FIG. 16 described later).
  • the first iron core 10 ⁇ / b> A protrudes radially outward from the second iron core 10 ⁇ / b> B.
  • the first iron core 10A is incorporated inside the cylindrical frame 6 of the electric motor 100 by shrink fitting, press fitting, welding, or the like.
  • the frame 6 is, for example, a part of a sealed container of the rotary compressor 500 (FIG. 18).
  • FIG. 4 is a plan view showing the first iron core 10A.
  • the first iron core 10A is composed of a laminate in which electromagnetic steel sheets having a thickness (t1) of 0.25 to 0.35 mm are laminated in the axial direction.
  • t1 thickness of 0.25 to 0.35 mm
  • a non-oriented electrical steel sheet is used as the electrical steel sheet, but the invention is not limited to this.
  • the first iron core 10A has a yoke 12A extending in the circumferential direction and a plurality (here, nine) teeth 11A extending radially inward from the yoke 12A.
  • the yoke 12A has an outer peripheral surface 16A that contacts the inner peripheral surface of the frame 6 (FIG. 3).
  • first iron core 10A a portion corresponding to the divided core 5 (a portion including one tooth 11A each) is referred to as a first divided iron core portion 5A. That is, the first iron core 10A is divided into a plurality (here, nine) first divided iron core portions 5A in the circumferential direction.
  • connection part 15 made of, for example, a circular caulking portion is formed.
  • the connection part 15 is arrange
  • the connecting portion 15 is a portion that connects the first divided core portions 5A adjacent to each other in the circumferential direction.
  • the plurality of first divided iron core portions 5A constituting the first iron core 10A are connected so as to be rotatable about the connecting portion 15. That is, the first iron core 10A can be developed in a strip shape (see FIG. 10) and combined in a ring shape.
  • the connecting portion 15 is not limited to the crimped portion, and may be a thin portion, which will be described later.
  • FIG. 5A is a plan view showing the first divided iron core portion 5A (first iron core 10A).
  • first iron core 10A first iron core 10A
  • the central portion in the circumferential direction of the yoke 12A is continuous with the teeth 11A.
  • a tooth front end portion 13A that faces the outer peripheral surface of the rotor 2 is formed on the radially inner side of the tooth 11A.
  • the teeth tip portion 13A is wider than the other portions of the teeth 11A, and has protruding portions 14A on both sides in the circumferential direction.
  • the yoke 12A has an end face 17A that forms one end in the circumferential direction and an end face 18A that forms the other end in the circumferential direction.
  • the connecting portion 15 is formed between the outer peripheral surface 16A and the end surface 18A.
  • the end faces 17A and 18A correspond to divided surfaces.
  • the end surfaces 17A and 18A of the yoke 12A of the first divided iron core portion 5A are respectively in the circumferential direction adjacent to the first divided iron core portion 5A. It contacts the end faces 18A and 17A of the yoke 12A.
  • a recess (notch) 19 is formed in the outer peripheral surface 16A of the yoke 12A.
  • the concave portion 19 is a portion for chucking the stator 1 with a jig in a winding step (FIG. 12) described later.
  • a caulking part (tea squeezing part) 101 is formed at the radial center of the teeth 11A.
  • crimped portions (yoke crimped portions) 102 and 103 are formed on both sides in the circumferential direction of the concave portion 19 of the yoke 12A.
  • the caulking part 101 of the teeth 11 and the caulking parts 102 and 103 of the yoke 12 fix the electromagnetic steel sheets adjacent in the axial direction to each other.
  • High dimensional accuracy and high rigidity of the first iron core 10 ⁇ / b> A (the teeth 11 ⁇ / b> A and the yoke 12 ⁇ / b> A) can be obtained by fixing the electromagnetic steel plate with the crimping portion 101 of the tooth 11 and the crimping portions 102 and 103 of the yoke 12.
  • the caulking portion 101 is not limited to the central portion of the tooth 11 ⁇ / b> A, and may be provided, for example, at both circumferential ends of the tooth distal end portion 13 or the circumferential central portion of the tooth distal end portion 13.
  • FIG. 6 is a plan view showing the configuration of the second iron core 10B.
  • the second iron core 10B is made of an amorphous metal or a nanocrystalline metal.
  • the second iron core 10B is constituted by a laminated body in which thin strips having a thickness of 0.02 mm to 0.05 mm are laminated in the axial direction, or a molded body in which powder is compression-molded.
  • the second iron core 10B is fixed to the first iron core 10A (FIG. 4) with an adhesive or a resin.
  • the second iron core 10B when the second iron core 10B is formed of a laminate of amorphous metal ribbons, the second iron core 10B may be annealed in order to remove distortion generated during molding and improve magnetic characteristics.
  • the second iron core 10B has a yoke 12B extending in the circumferential direction and a plurality (here, nine) teeth 11B extending radially inward from the yoke 12B.
  • the yoke 12B has an outer peripheral surface 16B that faces the inner peripheral surface of the frame 6 (FIG. 3).
  • a portion corresponding to the divided core 5 (a portion including one tooth 11B) is referred to as a second divided iron core portion 5B. That is, the second iron core 10B is divided into a plurality of (here, nine) second divided iron core portions 5B in the circumferential direction. A gap G is formed between the second divided core portions 5B adjacent in the circumferential direction.
  • FIG. 5B is a plan view showing the second divided iron core portion 5B (second iron core 10B).
  • the central portion in the circumferential direction of the yoke 12B is continuous with the teeth 11B.
  • a tooth front end portion 13B that faces the outer peripheral surface of the rotor 2 is formed on the radially inner side of the tooth 11B.
  • Teeth tip part 13B is wider than the other part of teeth 11B, and has protrusions 14B on both sides in the circumferential direction.
  • the yoke 12B has an end face 17B that forms one end in the circumferential direction and an end face 18B that forms the other end in the circumferential direction.
  • the teeth 11B and the yoke 12B of the second iron core 10B are not provided with the caulking portions 101, 102, 103 (FIG. 4A) of the first iron core 10A.
  • FIG. 7 is a diagram showing the first divided core portion 5A and the second divided core portion 5B in an overlapping manner.
  • the outer peripheral surface 16B of the yoke 12B is located radially inward from the outer peripheral surface 16A of the yoke 12A.
  • the end surfaces 17B and 18B of the yoke 12B in the second divided iron core portion 5B are positioned on the inner side in the circumferential direction from the end surfaces 17A and 18A of the yoke 12A in the first divided iron core portion 5A.
  • the yokes 12A and 12B have the same contour shape except for the outer peripheral surfaces 16A and 16B and both end surfaces 17A, 18A, 17B and 18B in the circumferential direction.
  • the teeth 11A and 11B have the same contour shape.
  • FIG. 8 is a diagram showing the positional relationship between the first iron core 10A and the second iron core 10B.
  • the outer peripheral surface 16B of the yoke 12B is located radially inward with respect to the outer peripheral surface 16A of the yoke 12A.
  • the distance r2 from the axis C1 to the outer peripheral surface 16B of the yoke 12B is smaller than the distance r1 from the axis C1 to the outer peripheral surface 16A of the yoke 12A.
  • the outer peripheral surface 16A of the yoke 12A contacts the frame 6, but the outer peripheral surface 16B of the yoke 12B is separated from the frame 6. Accordingly, external force from the frame 6 acts on the first iron core 10A, but external force from the frame 6 does not act on the second iron core 10B.
  • end surfaces 17B and 18B (FIG. 5B) of the yoke 12B in the second divided core portion 5B are more than the end surfaces 17A and 18A of the yoke 12A in the first divided core portion 5A (FIG. 5A).
  • Each is located on the inner side in the circumferential direction. Therefore, a gap G (FIG. 6) is formed between the second divided core portions 5B adjacent in the circumferential direction. Accordingly, the external force from the adjacent second divided core portion 5B does not act on the second divided core portion 5B.
  • the yoke 12A of the first iron core 10A is referred to as a “first yoke”, and the yoke 12B of the second iron core 10B is referred to as a “second yoke”.
  • first tooth one tooth
  • second tooth the adjacent tooth 11A
  • third teeth the teeth 11B adjacent in the axial direction to the first teeth
  • fourth teeth are referred to as “fourth teeth”.
  • the first iron core 10A has split surfaces (17A, 18A) formed between adjacent teeth 11A in the yoke 12A (first yoke) (that is, between the first teeth and the second teeth). ) Can be said to be divided.
  • the second iron core 10B is divided through a gap G formed between adjacent teeth 11B (that is, between the third tooth and the fourth tooth) in the yoke 12B (second yoke). You can say.
  • FIG. 9 is a plan view showing a magnetic steel sheet 50 for forming the first iron core 10A.
  • a plurality of steel plate portions 51 having a shape having the teeth 11 ⁇ / b> A and the yoke 12 ⁇ / b> A are punched out from the electromagnetic steel plate 50.
  • a plurality of rows of nine steel plate portions 51 are punched out from the electromagnetic steel plate 50.
  • the teeth 11A are oriented in opposite directions in two adjacent rows, and between the adjacent teeth 11A in one row (for example, the row indicated by reference symbol A1), the other row (for example, the row indicated by reference symbol A2). Teeth 11A is arranged. Thereby, more steel plate portions 51 can be punched out from the electromagnetic steel plate 50.
  • a plurality of steel plate portions 51 punched out from the electromagnetic steel plate 50 are laminated in the axial direction and fixed by caulking portions 101, 102, 103, whereby the first divided iron core portion 5A shown in FIG. Form.
  • a plurality of first divided core parts 5 ⁇ / b> A are arranged in a band shape and connected to each other by a connecting part 15, thereby forming a first iron core 10 ⁇ / b> A.
  • FIG. 11 is a plan view showing a ribbon 52 of amorphous metal or nanocrystalline metal for forming the second iron core 10B.
  • a plurality of ribbon portions 53 having a shape having teeth 11B and a yoke 12B are punched out from the amorphous metal or nanocrystalline metal ribbon 52.
  • two rows of a plurality of strip portions 53 are punched out from the strip 52.
  • the direction of teeth 11A is opposite to each other in two adjacent rows, and the teeth 11B in the other row are arranged between the adjacent teeth 11B in one row. Thereby, it is possible to punch more strip portions 53 from the strip 52.
  • stator core 10 in which the divided cores 5 are arranged in a strip shape is formed.
  • an insulator 30 (FIG. 2) is formed on the stator core 10.
  • the insulator 30 may be molded integrally with the stator core 10 by, for example, setting the stator core 10 in a mold and filling the resin, or a pre-molded resin molded body may be molded into the stator core 10. It may be formed by fitting in.
  • FIG. 12B are schematic views for explaining the winding process.
  • the split cores 5 for winding are fixed to the winding positions with a jig, The split core 5 is rotated around the connecting portion 15 so that the interval between adjacent teeth 11 is widened. Thereby, a wide space is formed around the teeth 11 where the winding is performed.
  • the winding 3 is wound around the teeth 11 of the split core 5 fixed at the winding position by using the winding nozzle 7 of the winding device.
  • the winding nozzle 7 rotates around the teeth 11 as shown by an arrow R ⁇ b> 2 in FIG. 12B, and winds the winding 3 around the teeth 11.
  • stator core 10 After winding the winding 3 around each tooth 11, the stator core 10 is assembled in an annular shape as shown in FIG. At this time, the butted portions (indicated by reference sign W in FIG. 1) of the split cores 5 at both ends of the stator core 10 are butted together and welded.
  • stator 1 including the stator core 10, the insulator 30, and the winding 3 is completed. Thereafter, the stator 1 is assembled inside the frame 6 by shrink fitting, press fitting, or welding. As described above, among the stator cores 10, the first iron core 10 ⁇ / b> A contacts the frame 6, but the second iron core 10 ⁇ / b> B does not contact the frame 6.
  • FIG. 13 is a view showing an electromagnetic steel plate 54 for forming the rotor core 21.
  • a steel plate portion 55 having the shape of the rotor core 21 having the magnet insertion hole 22, the flux barrier 23, and the center hole 26 is punched out from the electromagnetic steel plate 54 shown in FIG.
  • a plurality of steel plate portions 55 punched out from the electromagnetic steel plate 54 are stacked in the axial direction, and fixed from both sides in the axial direction by the fixing members 41 and 42 (FIG. 3), whereby the rotor core 21 shown in FIG. Form.
  • the rotor 2 is formed by inserting the permanent magnet 25 into the magnet insertion hole 22 of the rotor core 21 and inserting the shaft 60 into the center hole 26. Thereafter, the rotor 2 is inserted inside the stator 1 mounted in the frame 6. Thereby, the electric motor 100 shown in FIG. 1 is completed.
  • the first iron core 10A, the second iron core 10B, and the rotor iron core 21 are formed in separate steps as shown in FIGS. 9, 11, and 13, although the materials or the thicknesses of the electromagnetic steel sheets are different from each other. Therefore, a high material yield can be obtained and the manufacturing cost of the electric motor 100 can be suppressed.
  • FIG. 14 is a cross-sectional view for explaining the operation of the stator 1 of this embodiment.
  • the first core 10 ⁇ / b> A made of an electromagnetic steel plate is fixed inside the frame 6 by shrink fitting, press fitting, welding, or the like.
  • the second iron core 10 ⁇ / b> B made of amorphous metal or nanocrystalline metal is separated from the frame 6.
  • the stator core 10 (first iron core 10A and second iron core 10B) faces the outer peripheral surface of the rotor 2. Magnetic flux from the permanent magnet 25 of the rotor 2 flows into the teeth 11 from the tooth tip 13 (FIG. 3), and flows in the teeth 11 outward in the radial direction. The magnetic flux that has flowed through the teeth 11 flows into the yoke 12 and further flows through the yoke 12 in the circumferential direction. In this way, a path (magnetic path) of magnetic flux passing through the teeth 11 and the yoke 12 is formed, and torque for rotating the rotor 2 is generated by the action of the magnetic flux and the current flowing through the winding 3.
  • the second iron core 10B is made of an amorphous metal or a nanocrystalline metal.
  • the amorphous metal is amorphous and has no directionality, and the nanocrystalline metal is refined to the order of 10 ⁇ m in crystal grains. Therefore, both have excellent magnetic properties and low magnetoresistance. Therefore, a large amount of magnetic flux from the permanent magnet 25 of the rotor 2 flows to the teeth 11B, so that iron loss in the teeth 11 is reduced.
  • the electrical steel sheet constituting the first iron core 10A is not as remarkable as an amorphous metal, it has a property of increasing the magnetic resistance when subjected to compressive stress. Therefore, when compressive stress from the frame 6 is applied to the first iron core 10A, the magnetic flux from the permanent magnet 25 of the rotor 2 is less likely to flow to the teeth 11A of the first iron core 10A. As a result, the magnetic flux flowing in the teeth 11B of the second iron core 10B made of amorphous metal or nanocrystalline metal (and thus having low magnetic resistance) increases, and the iron loss in the teeth 11 can be further reduced.
  • the total thickness of the first iron core 10A (L1 + L3 + L5 shown in FIG. 3) is smaller than the total thickness (L2 + L4) of the second iron core 10B, the area where the teeth 11A face the rotor 2 The area where the teeth 11B face the rotor 2 is larger than that. Therefore, the magnetic flux from the permanent magnet 25 of the rotor 2 flows more easily into the teeth 11B than in the teeth 11A, and the iron loss in the teeth 11 can be further reduced.
  • the decrease in magnetic resistance when subjected to compressive stress is more remarkable than that of the electromagnetic steel sheet.
  • the second iron core 10B has a smaller outer diameter than the first iron core 10A and does not contact the frame 6, the compressive stress applied to the second iron core 10B can be suppressed. Therefore, an increase in the magnetic resistance of the second iron core 10B can be suppressed.
  • the mechanical strength of the second iron core 10B may be reduced. Since the iron core 10B does not contact the frame 6, damage to the second iron core 10B can be suppressed.
  • the stator core 10 includes the first iron core 10A made of an electromagnetic steel plate and the second iron core made of an amorphous metal or a nanocrystalline metal. 10B are arranged in the axial direction. Therefore, the magnetic flux of the rotor 2 is more likely to flow to the second iron core 10B than to the first iron core 10A, and iron loss can be reduced.
  • the outer diameter of the second iron core 10B is smaller than the outer diameter of the first iron core 10A.
  • an external force from the frame 6 can be received by the first iron core 10A. Therefore, an increase in the magnetic resistance of the second iron core 10B can be suppressed, and the iron loss can be effectively reduced.
  • the first iron core 10A is divided into a plurality of divided surfaces (17A, 18A) formed between adjacent teeth 11A, and is connected at the end on the outer peripheral surface side of the yoke 12A. Therefore, in the winding process, the split core 5 can be rotated around the connecting portion 15 to form a wide space around the teeth 11, and the winding process is simplified. In addition, a high-density winding is possible with respect to the cross-sectional area of the slot, and a highly efficient electric motor 100 can be obtained.
  • the connecting portion 15 is formed of a circular crimping portion, the plurality of first divided core portions 5A of the first iron core 10A can be rotatably connected with a simple configuration.
  • the first iron core 10A is disposed at both ends and the center of the stator core 10 in the axial direction, sufficient strength of the stator core 10 can be obtained.
  • the second iron core 10B is divided in the circumferential direction across the gap G formed between the adjacent teeth 11B, no external force acts between the adjacent second divided iron core portions 5B. Therefore, an increase in the magnetic resistance of the second iron core 10B can be suppressed.
  • the teeth 11A are larger than the area facing the rotor 2.
  • the area where 11B faces the rotor 2 is larger.
  • the second iron core 10B is composed of a laminated body in which a plurality of thin ribbons are laminated or a compression molding body of powder, the second iron core 10B can be easily manufactured. Further, by interposing an adhesive between the plurality of ribbons, the second iron cores 10B can be firmly integrated with each other, and eddy current loss can be reduced. Also, annealing the amorphous metal ribbon stack removes the strain generated during molding and improves the magnetic properties.
  • each electromagnetic steel sheet constituting the first iron core 10A the thickness t2 of each ribbon constituting the second iron core 10B, and the thickness tr of each electromagnetic steel sheet constituting the rotor core 21 Satisfying t2 ⁇ t1 ⁇ tr, the following effects can be obtained.
  • the rotor core 21 in which the change in magnetic flux is small and the iron loss is less likely to occur is composed of the electromagnetic steel sheet of the stator core 10 and the electromagnetic steel sheet that is thicker and cheaper than the ribbon, thereby reducing the manufacturing cost of the rotor core 21. can do. Further, the influence of plastic deformation due to the press working of the rotor core 21 is mitigated and the strength is improved, so that high-speed driving is possible. Further, the thin ribbon constituting the second iron core 10B in which the magnetic flux from the permanent magnet 25 is easy to flow is made thinner than the electromagnetic steel plate constituting the first iron core 10A in which the magnetic flux from the permanent magnet 25 is difficult to flow. The iron loss in the core 10 can be reduced, and the highly efficient electric motor 100 can be obtained.
  • FIG. 15 is a cross-sectional view showing the configuration of the electric motor of the first modification of the first embodiment.
  • the stator core 10 of the first embodiment has the first iron core 10A at both ends and the center in the axial direction (FIG. 3).
  • the stator core 10 of the first modification has the first iron core 10A only at both ends in the axial direction.
  • the second iron core 10B is disposed between the two first iron cores 10A.
  • the total thickness (L11 + L13) of the first core 10A is the second It is smaller than the thickness (L12) of the iron core 10B. That is, the magnetic flux from the permanent magnet 25 of the rotor 2 tends to flow to the second iron core 10B.
  • the portion of the stator core 10 excluding both axial end portions is constituted by the second iron core 10B, so that the magnetic flux from the permanent magnet 25 of the rotor 2 is the second iron core 10B. Easy to flow into. Therefore, iron loss can be reduced more effectively. Further, since the first iron core 10 ⁇ / b> A is disposed at both axial ends of the stator core 10, sufficient strength of the stator core 10 can be obtained.
  • FIG. 16 is a cross-sectional view showing the configuration of the electric motor of the second modification of the first embodiment.
  • the axial length of the stator core 10 is the same as the axial length of the rotor core 21 (FIG. 3).
  • the axial length of the stator core 10 is longer than the axial length of the rotor core 21.
  • the first iron cores 10 ⁇ / b> A at both axial ends of the stator core 10 are arranged on the outer side in the axial direction than both axial ends of the rotor core 21. Therefore, the area where the rotor core 21 and the second iron core 10B face each other is larger than that in the first embodiment.
  • the first embodiment is the same as the first embodiment in that the total thickness of the first iron core 10A is smaller than the total thickness of the second iron core 10B.
  • FIG. 16 shows an example in which the second iron core 10B is formed of a molded body obtained by compression-molding amorphous metal or nanocrystalline metal powder, but a thin ribbon laminate of amorphous metal or nanocrystalline metal. You may comprise.
  • the first iron core 10A at both axial ends of the stator core 10 is disposed on the outer side in the axial direction from both axial ends of the rotor core 21, so that the rotor core 21 And the area where the second iron core 10B opposes can be increased. Therefore, the magnetic flux from the permanent magnet 25 of the rotor 2 easily flows to the second iron core 10B, and the iron loss can be reduced more effectively.
  • the first iron core 10 ⁇ / b> A is provided at both ends and the center in the axial direction of the stator core 10, but in the axial direction of the stator core 10 as in the second modification (FIG. 15).
  • the first iron core 10A may be provided only at both ends.
  • FIG. 17 is a cross-sectional view showing the configuration of the electric motor of the third modification of the first embodiment.
  • segmentation iron core part 5A of 10 A of 1st iron cores was comprised by the round crimping part (FIG. 6).
  • segmentation iron core part 5A of 10 A of 1st iron cores is comprised by the thin part.
  • split surfaces 81 are formed at both ends in the circumferential direction of the yoke 12A of each first split core portion 5A.
  • the dividing surface 81 extends radially outward from the inner peripheral surface of the yoke 12A toward the outer peripheral surface 16A, but does not reach the outer peripheral surface 16A.
  • a hole 80 is formed at the end of the dividing surface 81 (that is, the radially outer end).
  • the thin portion between the hole 80 of the yoke 12A and the outer peripheral surface 16A is a plastically deformable portion, and this thin portion constitutes the connecting portion 8.
  • the connecting portion 8 supports the first split core portion 5A so as to be rotatable by plastic deformation.
  • the second iron core 10B is configured similarly to the first embodiment (FIG. 6), and is fixed to the first iron core 10A by bonding or the like.
  • the plurality of first divided core parts 5A of the first iron core 10A are integrated by the connecting part 8 that is a thin part, so that the connecting part 8 is centered in the winding process.
  • the split core 5 can be rotated to form a wide space around the teeth 11 and the winding process is simplified. Further, a high-density winding is possible with respect to the cross-sectional area of the slot, and a highly efficient electric motor can be obtained.
  • the arrangement in the axial direction of the first iron core 10A described in the first modification (FIG. 15) or the second modification (FIG. 16) may be applied to the third modification.
  • FIG. 18 is a cross-sectional view showing a configuration of the rotary compressor 500.
  • the rotary compressor 500 includes an airtight container 507, a compression element 501 disposed in the airtight container 507, and an electric motor 100 that drives the compression element 501.
  • the compression element 501 includes a cylinder 502 having a cylinder chamber 503, a shaft 60 rotated by the electric motor 100, a rolling piston 504 fixed to the shaft 60, and a vane (not shown) that divides the cylinder chamber 503 into a suction side and a compression side. And an upper frame 505 and a lower frame 506 that insert the shaft 60 and close the axial end surface of the cylinder chamber 503. An upper discharge muffler 508 and a lower discharge muffler 509 are mounted on the upper frame 505 and the lower frame 506, respectively.
  • the sealed container 507 is a cylindrical container formed by drawing a steel plate having a thickness of 3 mm, for example. Refrigerating machine oil (not shown) that lubricates the sliding portions of the compression element 501 is stored at the bottom of the sealed container 507.
  • the shaft 60 is rotatably held by an upper frame 505 and a lower frame 506 as bearing portions.
  • the cylinder 502 includes a cylinder chamber 503 inside, and the rolling piston 504 rotates eccentrically within the cylinder chamber 503.
  • the shaft 60 has an eccentric shaft portion, and a rolling piston 504 is fitted to the eccentric shaft portion.
  • the sealed container 507 has a cylindrical frame 6.
  • the stator 1 of the electric motor 100 is incorporated inside the frame 6 by a method such as shrink fitting, press fitting, or welding. Electric power is supplied to the winding 3 of the stator 1 from a glass terminal 511 fixed to the hermetic container 507.
  • the shaft 60 is fixed to a center hole 26 formed at the center of the rotor core 21 (FIG. 1) of the rotor 2.
  • An accumulator 510 that stores refrigerant gas is attached to the outside of the sealed container 507.
  • a suction pipe 513 is fixed to the sealed container 507, and refrigerant gas is supplied from the accumulator 510 to the cylinder 502 via the suction pipe 513.
  • a discharge pipe 512 for discharging the refrigerant to the outside is provided at the upper part of the sealed container 507.
  • refrigerant for example, R410A, R407C, or R22 can be used. Moreover, it is desirable to use a low GWP (global warming potential) refrigerant from the viewpoint of preventing global warming.
  • GWP global warming potential
  • the operation of the rotary compressor 500 is as follows.
  • the refrigerant gas supplied from the accumulator 510 is supplied into the cylinder chamber 503 of the cylinder 502 through the suction pipe 513.
  • the shaft 60 rotates together with the rotor 2.
  • the rolling piston 504 fitted to the shaft 60 rotates eccentrically in the cylinder chamber 503, and the refrigerant is compressed in the cylinder chamber 503.
  • the refrigerant compressed in the cylinder chamber 503 passes through the discharge mufflers 508 and 509, and further rises in the sealed container 507 through a hole (not shown) provided in the rotor core 21.
  • the refrigerant rising in the sealed container 507 is discharged from the discharge pipe 512 and supplied to the high-pressure side of the refrigeration cycle.
  • the refrigerating machine oil is mixed in the refrigerant compressed in the cylinder chamber 503, the separation of the refrigerant and the refrigerating machine oil is promoted when passing through the hole provided in the rotor core 21, and the refrigerating machine oil Inflow to the discharge pipe 512 is prevented.
  • the rotary compressor 500 can be applied to the electric motor 100 described in the first embodiment and each modification, and the electric motor 100 has a small iron loss and sufficient strength. Therefore, the energy efficiency and reliability of the rotary compressor 500 can be improved.
  • the electric motor 100 of Embodiment 1 and each modification can be used not only for the rotary compressor 500 but also for other types of compressors.
  • FIG. 19 is a diagram showing a configuration of the refrigeration air conditioner 600.
  • 19 includes a compressor (rotary compressor) 500, a four-way valve 601, a condenser 602, a decompression device (expander) 603, an evaporator 604, a refrigerant pipe 605, And a control unit 606.
  • the compressor 500, the condenser 602, the decompression device 603, and the evaporator 604 are connected by a refrigerant pipe 605 to constitute a refrigeration cycle.
  • the operation of the refrigerating and air-conditioning apparatus 600 is as follows.
  • the compressor 500 compresses the sucked refrigerant and sends it out as a high-temperature and high-pressure gas refrigerant.
  • the four-way valve 601 switches the flow direction of the refrigerant.
  • the refrigerant sent from the compressor 500 flows to the condenser 602.
  • the condenser 602 exchanges heat between the refrigerant sent from the compressor 500 and air (for example, outdoor air), condenses and liquefies the refrigerant, and sends it out.
  • the decompression device 603 expands the liquid refrigerant sent out from the condenser 602 and sends it out as a low-temperature and low-pressure liquid refrigerant.
  • the evaporator 604 exchanges heat between the low-temperature and low-pressure liquid refrigerant sent out from the decompression device 603 and air (for example, indoor air), causes the refrigerant to take away the heat of the air, and evaporates (vaporizes) the gas refrigerant. Send out as.
  • the air from which heat has been removed by the evaporator 604 is supplied to a target space (for example, a room) by a blower (not shown).
  • the operations of the four-way valve 601 and the compressor 500 are controlled by the control unit 606.
  • the electric motor 100 described in each embodiment can be applied to the compressor 500 of the refrigerating and air-conditioning apparatus 600, and the electric motor 100 has a small iron loss and sufficient strength. Therefore, the energy efficiency and reliability of the refrigeration air conditioner 600 can be improved.
  • components other than the compressor 500 in the refrigerating and air-conditioning apparatus 600 are not limited to the above-described configuration example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Un stator (100) est pourvu d'un premier noyau de fer (10A) constitué d'une feuille d'acier électromagnétique et d'un second noyau de fer (10B) constitué d'un métal amorphe ou d'un métal nanocristallin. Le premier noyau de fer (10A) comprend : une première culasse (12A) s'étendant dans une direction circonférentielle ayant un axe (C1) en son centre ; et des premières dents (11A) ainsi que des deuxièmes dents (11A) s'étendant vers l'axe (C1) à partir de la première culasse (12A). Le second noyau de fer (10B) comprend une seconde culasse (12B) adjacente à la première culasse (12B) dans la direction de l'axe (C1) et des troisièmes dents (11B) ainsi que des quatrièmes dents (11B) adjacentes aux premières dents (11A) et aux deuxièmes dents (11A) dans la direction de l'axe (C1). Le premier noyau de fer (10A) est divisé par une surface de division formée entre les premières dents (11A) et les deuxièmes dents (11A) dans la première culasse (12A), et ledit premier noyau de fer (10A) est formé d'un seul tenant davantage à l'extérieur de manière circonférentielle que la surface de division. La distance (r2) de l'axe (C1) à la surface circonférentielle externe (16B) de la seconde culasse (12B) est inférieure à la distance de l'axe (C1) à la surface circonférentielle externe (16A) de la première culasse (12A).
PCT/JP2017/002893 2017-01-27 2017-01-27 Stator, moteur électrique, compresseur et dispositif de réfrigération/climatisation WO2018138864A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2017/002893 WO2018138864A1 (fr) 2017-01-27 2017-01-27 Stator, moteur électrique, compresseur et dispositif de réfrigération/climatisation
JP2018564042A JP6656428B2 (ja) 2017-01-27 2017-01-27 固定子、電動機、圧縮機、および冷凍空調装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/002893 WO2018138864A1 (fr) 2017-01-27 2017-01-27 Stator, moteur électrique, compresseur et dispositif de réfrigération/climatisation

Publications (1)

Publication Number Publication Date
WO2018138864A1 true WO2018138864A1 (fr) 2018-08-02

Family

ID=62979390

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/002893 WO2018138864A1 (fr) 2017-01-27 2017-01-27 Stator, moteur électrique, compresseur et dispositif de réfrigération/climatisation

Country Status (2)

Country Link
JP (1) JP6656428B2 (fr)
WO (1) WO2018138864A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020129923A1 (fr) * 2018-12-17 2020-06-25 日本製鉄株式会社 Noyau feuilleté et machine électrique rotative
JP2021019375A (ja) * 2019-07-17 2021-02-15 日本製鉄株式会社 積層コアおよびその製造方法、回転電機
JP6841975B1 (ja) * 2019-09-27 2021-03-10 三菱電機株式会社 電機子鉄心、電機子および電動機
JP2021125909A (ja) * 2020-02-03 2021-08-30 株式会社明電舎 ステータ、及び回転電機
EP3902111A4 (fr) * 2018-12-17 2022-10-05 Nippon Steel Corporation Noyau laminé et machine électrique tournante
WO2023103638A1 (fr) * 2021-12-08 2023-06-15 安徽美芝精密制造有限公司 Stator, moteur, compresseur et équipement électrique
US11710990B2 (en) 2018-12-17 2023-07-25 Nippon Steel Corporation Laminated core with circumferentially spaced adhesion parts on teeth
US11742129B2 (en) 2018-12-17 2023-08-29 Nippon Steel Corporation Adhesively-laminated core, manufacturing method thereof, and electric motor
US11855485B2 (en) 2018-12-17 2023-12-26 Nippon Steel Corporation Laminated core, method of manufacturing same, and electric motor
US11863017B2 (en) 2018-12-17 2024-01-02 Nippon Steel Corporation Laminated core and electric motor
US11915860B2 (en) 2018-12-17 2024-02-27 Nippon Steel Corporation Laminated core and electric motor
US11923130B2 (en) 2018-12-17 2024-03-05 Nippon Steel Corporation Laminated core and electric motor
US11979059B2 (en) 2018-12-17 2024-05-07 Nippon Steel Corporation Laminated core and electric motor
US11990795B2 (en) 2018-12-17 2024-05-21 Nippon Steel Corporation Adhesively-laminated core for stator, method of manufacturing same, and electric motor
US11996231B2 (en) 2018-12-17 2024-05-28 Nippon Steel Corporation Laminated core and electric motor
US12068097B2 (en) 2018-12-17 2024-08-20 Nippon Steel Corporation Laminated core, core block, electric motor and method of producing core block
US12074476B2 (en) 2018-12-17 2024-08-27 Nippon Steel Corporation Adhesively-laminated core for stator and electric motor
US12104096B2 (en) 2018-12-17 2024-10-01 Nippon Steel Corporation Laminated core, laminated core manufacturing method, and electric motor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004229404A (ja) * 2003-01-22 2004-08-12 Genesis:Kk リラクタンスモータおよびリラクタンスモータ用ステータの磁石
JP2007135319A (ja) * 2005-11-11 2007-05-31 Sumitomo Electric Ind Ltd ステータコアの製造方法及びステータコア
JP2009232538A (ja) * 2008-03-21 2009-10-08 Panasonic Corp コンデンサ電動機の固定子
JP2009538594A (ja) * 2006-05-25 2009-11-05 ライト・エンジニアリング・インコーポレーテッド 低損失材料を使用する高効率高速電気装置
JP2010045872A (ja) * 2008-08-08 2010-02-25 Fuji Electric Systems Co Ltd 永久磁石式回転機
JP2014155347A (ja) * 2013-02-08 2014-08-25 Mitsubishi Electric Corp 分割鉄心、及びこの分割鉄心を用いた固定子、並びにこの固定子を備えた回転電機
US20140265716A1 (en) * 2013-03-14 2014-09-18 Samsung Electro-Mechanics Co., Ltd. Soft magnetic core and motor including the same
JP2014226023A (ja) * 2013-04-23 2014-12-04 株式会社神戸製鋼所 Ｓｒモータのステータ、及びこのステータを備えたｓｒモータ
JP2015211603A (ja) * 2014-04-30 2015-11-24 三菱電機株式会社 電動機、密閉型圧縮機及び冷凍サイクル装置

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004229404A (ja) * 2003-01-22 2004-08-12 Genesis:Kk リラクタンスモータおよびリラクタンスモータ用ステータの磁石
JP2007135319A (ja) * 2005-11-11 2007-05-31 Sumitomo Electric Ind Ltd ステータコアの製造方法及びステータコア
JP2009538594A (ja) * 2006-05-25 2009-11-05 ライト・エンジニアリング・インコーポレーテッド 低損失材料を使用する高効率高速電気装置
JP2009232538A (ja) * 2008-03-21 2009-10-08 Panasonic Corp コンデンサ電動機の固定子
JP2010045872A (ja) * 2008-08-08 2010-02-25 Fuji Electric Systems Co Ltd 永久磁石式回転機
JP2014155347A (ja) * 2013-02-08 2014-08-25 Mitsubishi Electric Corp 分割鉄心、及びこの分割鉄心を用いた固定子、並びにこの固定子を備えた回転電機
US20140265716A1 (en) * 2013-03-14 2014-09-18 Samsung Electro-Mechanics Co., Ltd. Soft magnetic core and motor including the same
JP2014226023A (ja) * 2013-04-23 2014-12-04 株式会社神戸製鋼所 Ｓｒモータのステータ、及びこのステータを備えたｓｒモータ
JP2015211603A (ja) * 2014-04-30 2015-11-24 三菱電機株式会社 電動機、密閉型圧縮機及び冷凍サイクル装置

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11990795B2 (en) 2018-12-17 2024-05-21 Nippon Steel Corporation Adhesively-laminated core for stator, method of manufacturing same, and electric motor
US12074476B2 (en) 2018-12-17 2024-08-27 Nippon Steel Corporation Adhesively-laminated core for stator and electric motor
US11742129B2 (en) 2018-12-17 2023-08-29 Nippon Steel Corporation Adhesively-laminated core, manufacturing method thereof, and electric motor
CN113169594A (zh) * 2018-12-17 2021-07-23 日本制铁株式会社 层叠铁芯以及旋转电机
US12081068B2 (en) 2018-12-17 2024-09-03 Nippon Steel Corporation Laminated core with some electrical steel sheets adhered with adhesive and some electrical steel sheets fixed to each other
US11855485B2 (en) 2018-12-17 2023-12-26 Nippon Steel Corporation Laminated core, method of manufacturing same, and electric motor
EP3902111A4 (fr) * 2018-12-17 2022-10-05 Nippon Steel Corporation Noyau laminé et machine électrique tournante
EP3902110A4 (fr) * 2018-12-17 2022-10-05 Nippon Steel Corporation Noyau feuilleté et machine électrique rotative
US12068097B2 (en) 2018-12-17 2024-08-20 Nippon Steel Corporation Laminated core, core block, electric motor and method of producing core block
US11710990B2 (en) 2018-12-17 2023-07-25 Nippon Steel Corporation Laminated core with circumferentially spaced adhesion parts on teeth
US12104096B2 (en) 2018-12-17 2024-10-01 Nippon Steel Corporation Laminated core, laminated core manufacturing method, and electric motor
US11996231B2 (en) 2018-12-17 2024-05-28 Nippon Steel Corporation Laminated core and electric motor
US11915860B2 (en) 2018-12-17 2024-02-27 Nippon Steel Corporation Laminated core and electric motor
US11863017B2 (en) 2018-12-17 2024-01-02 Nippon Steel Corporation Laminated core and electric motor
WO2020129923A1 (fr) * 2018-12-17 2020-06-25 日本製鉄株式会社 Noyau feuilleté et machine électrique rotative
US11923130B2 (en) 2018-12-17 2024-03-05 Nippon Steel Corporation Laminated core and electric motor
US11973369B2 (en) 2018-12-17 2024-04-30 Nippon Steel Corporation Laminated core with center electrical steel sheets adhered with adhesive and some electrical steel sheets fixed to each other on both ends of the center sheets
US11979059B2 (en) 2018-12-17 2024-05-07 Nippon Steel Corporation Laminated core and electric motor
JP7406061B2 (ja) 2019-07-17 2023-12-27 日本製鉄株式会社 積層コアおよびその製造方法、回転電機
JP2021019375A (ja) * 2019-07-17 2021-02-15 日本製鉄株式会社 積層コアおよびその製造方法、回転電機
CN114424430A (zh) * 2019-09-27 2022-04-29 三菱电机株式会社 电枢铁心、电枢及电动机
JP6841975B1 (ja) * 2019-09-27 2021-03-10 三菱電機株式会社 電機子鉄心、電機子および電動機
JP2021125909A (ja) * 2020-02-03 2021-08-30 株式会社明電舎 ステータ、及び回転電機
WO2023103638A1 (fr) * 2021-12-08 2023-06-15 安徽美芝精密制造有限公司 Stator, moteur, compresseur et équipement électrique

Also Published As

Publication number Publication date
JPWO2018138864A1 (ja) 2019-03-22
JP6656428B2 (ja) 2020-03-04

Similar Documents

Publication Publication Date Title
WO2018138864A1 (fr) Stator, moteur électrique, compresseur et dispositif de réfrigération/climatisation
CN108028557B (zh) 永磁铁嵌入式电动机、压缩机以及制冷空调装置
JP6431483B2 (ja) 永久磁石埋込型電動機の製造方法、圧縮機の製造方法、および冷凍空調装置の製造方法
WO2017208290A1 (fr) Stator, moteur électrique, compresseur, climatiseur de refroidissement
JP6053910B2 (ja) 永久磁石埋込型電動機、圧縮機、および冷凍空調装置
WO2017126053A1 (fr) Moteur synchrone à aimants permanents, compresseur et climatiseur
CN107431394B (zh) 压缩机以及制冷循环装置
JP6656429B2 (ja) 固定子、電動機、圧縮機、および冷凍空調装置
JP6689449B2 (ja) 回転子、電動機、圧縮機、送風機、および空気調和装置
JP2010068600A (ja) 永久磁石型モータ及び密閉型圧縮機
JP6651019B2 (ja) 電動機、圧縮機、冷凍空調装置および電動機の製造方法
JP7038827B2 (ja) ステータ、電動機、圧縮機および空気調和装置
US20120301334A1 (en) Compressor and Refrigerating Cycle Apparatus
JP7105999B2 (ja) 電動機、圧縮機、空気調和装置および電動機の製造方法
JP6961106B2 (ja) 回転子、電動機、圧縮機、空気調和装置および回転子の製造方法
JP7345633B2 (ja) 回転子、電動機、圧縮機、冷凍サイクル装置及び空気調和装置
JP7130131B2 (ja) 着磁用リング、着磁方法、着磁装置、ロータ、電動機、圧縮機および空気調和装置
WO2023112078A1 (fr) Stator, moteur, compresseur et dispositif à cycle de réfrigération

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018564042

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17893685

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17893685

Country of ref document: EP

Kind code of ref document: A1