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公开(公告)号：US20150372547A1
公开(公告)日：2015-12-24
申请号：US14431268
申请日：2013-09-30
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Nobuyuki KIFUJI , Yoshiki YASUDA , Yoshinari ASANO , Yasuhiko OHSAWA
IPC: H02K1/27
CPC classification number: H02K1/2773 , H02K1/2766 , H02K2213/03
Abstract: Each of permanent magnets includes a magnet body formed across the radial direction of a rotor core, and a pair of magnet end parts bending toward the outer peripheral side of the magnet body and extending respectively from both ends of the magnet body in the peripheral direction toward the outer edge of the rotor core. Magnetization directions of the magnet end parts and a magnetic pole center line intersect with each other on the outer peripheral side of the magnet body. The inclination angle of each magnetization direction of the magnet end parts with respect to the magnetic pole center line is greater than the inclination angle of a magnetization direction of the magnet body with respect to the magnetic pole center line.
Abstract translation: 每个永磁体包括沿转子芯的径向形成的磁体和朝向磁体的外周侧弯曲的一对磁体端部，并且在磁体的周向方向上分别从磁体的两端延伸 转子芯的外边缘。 磁体端部和磁极中心线的磁化方向在磁体的外周侧彼此相交。 磁体端部相对于磁极中心线的每个磁化方向的倾斜角度大于磁体相对于磁极中心线的磁化方向的倾斜角度。
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公开(公告)号：US20190238033A1
公开(公告)日：2019-08-01
申请号：US16320231
申请日：2017-07-25
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yoshitaka OKUYAMA , Yoshiki YASUDA
Abstract: A rotor core has magnet holes penetrating the rotor core in an axial direction. A first end plate is provided for one end side of the rotor core in the axial direction, and has gate holes communicating with the magnet holes. The magnet holes and the gate holes are filled with bond magnets. Each gate hole is formed to be smaller than the corresponding magnet hole and is positioned inside the magnet hole when viewed in plan.
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公开(公告)号：US20180212497A1
公开(公告)日：2018-07-26
申请号：US15745958
申请日：2016-06-03
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yoshitaka OKUYAMA , Yoshiki YASUDA , Yoshinari ASANO
Abstract: Disclosed herein is a method for manufacturing a rotor, the method including an injection process of injecting a bonded magnet material into a cavity of a molding die generating a magnetic field in the cavity so that the bonded magnet material is poured into each of the magnet slots in the rotor core set in the cavity through one of openings of each magnet slot, wherein the molding die used in the injection process has gates which respectively open at positions corresponding to regions, each of which ensures a view from the one of openings to the other opening of the magnet slot along an axial center of the rotor core.
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Patent Agency Ranking
公开(公告)号：US20230216376A1
公开(公告)日：2023-07-06
申请号：US18000859
申请日：2021-06-09
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Takuya SAKURAGI , Daiki MIWA , Yoshiki YASUDA , Akio YAMAGIWA , Hiroshi HIBINO
Abstract: An electric motor includes: a rotor configured to be rotatable about a rotation axis and to which a fluid drive unit is fixed; a stator that is disposed inward of the rotor and includes claw pole stator units, the claw pole stator units each including a winding that is wound in an annular shape around the rotation axis and an iron core that surrounds the winding; a hole that is provided in one end portion of the rotor so as to penetrate from inside to outside of the rotor, the stator being provided in the inside and the fluid drive unit being fixed to the outside of the rotor; and an inflow path configured to cause a surrounding fluid to flow into inside of a stator unit, the stator unit being provided at one other end portion opposite to the one end portion in an axial direction.
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公开(公告)号：US20150135519A1
公开(公告)日：2015-05-21
申请号：US14603771
申请日：2015-01-23
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Toshinari KONDOU , Yoshiki YASUDA , Akio YAMAGIWA
IPC: H02K15/02
CPC classification number: H02K15/026 , H02K1/16 , H02K1/276 , H02K3/50 , H02K21/14 , H02K2201/03 , H02K2213/12 , Y10T29/49012
Abstract: A motor includes a driving shaft, a rotor attached to the driving shaft, and a stator having a substantially cylindrical stator core provided around the rotor, and a plurality of coils wound around the stator core in a distributed winding manner. The stator core includes three separated stator core parts aligned along a peripheral direction, and each of the coils is disposed so as not to lie astride any two of the three separated stator core parts. At least one coil end of the plurality of the coils is disposed to pass through an inner side relative to an inner peripheral surface of the stator core.
Abstract translation: 电动机包括驱动轴，安装在驱动轴上的转子以及设置在转子周围的具有大致圆筒形的定子铁心的定子，以及以分布式绕线方式缠绕在定子铁芯上的多个线圈。 定子铁芯包括沿着圆周方向排列的三个分离的定子铁心部件，并且每个线圈被布置成不跨过三个分离的定子铁芯部件中的任何两个。 多个线圈的至少一个线圈端部被设置成穿过相对于定子芯的内周面的内侧。
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公开(公告)号：US20230216360A1
公开(公告)日：2023-07-06
申请号：US18001133
申请日：2021-06-08
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Takuya SAKURAGI , Yoshiki YASUDA , Daiki MIWA , Akio YAMAGIWA , Hiroshi HIBINO
IPC: H02K1/2795 , H02K1/276 , H02K11/40
CPC classification number: H02K1/2795 , H02K1/2766 , H02K11/40
Abstract: A technique by which the magnetic flux of the magnetic pole facing the stator of the magnet can be further increased in a rotor, is provided. An electric motor according to the present disclosure includes a stator 10; a rotor 20 facing the stator 10 in an axial direction (first direction) and configured to be rotatable in a circumferential direction (second direction) that is orthogonal to the axial direction; and a short-circuit reduction member 25, 26, wherein the rotor 20 includes a main magnet 22 having a first magnetic pole on a surface facing the stator 10; an auxiliary magnet 23, 24 arranged adjacent to the main magnet 22 and having a second magnetic pole and a third magnetic pole that is different in polarity from the second magnetic pole, and configured to increase a magnetic flux of the first magnetic pole, and wherein the auxiliary magnet 23, 24 is arranged adjacent to the main magnet 22 in a radial direction (third direction) that is orthogonal to the axial direction, and the short-circuit reduction member 25, 26 is provided at a portion around the auxiliary magnet 23, 24 facing the auxiliary magnet 23, 24 in parallel with a virtual line connecting the second magnetic pole and the third magnetic pole, to reduce a short-circuit of a magnetic flux between the second magnetic pole and the third magnetic pole.
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公开(公告)号：US20220294289A1
公开(公告)日：2022-09-15
申请号：US17754120
申请日：2020-09-24
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yoshitaka OKUYAMA , Masaki HIRANO , Shoujirou NAKA , Shunsuke SHIMIZU , Yoshiki YASUDA , Akio YAMAGIWA
Abstract: Techniques to reduce the d-axis inductance in a rotor are provided. According to one embodiment in the present disclosure, a rotor 20 includes permanent magnets 22 and 23 housed in magnet slots different from each other formed in an iron core 21, and arranged in series magnetically; and a flux barrier (cavity 24) provided to be close to an end in a direction orthogonal to a direction of a main magnetic flux, for each of the permanent magnets 22 and 23 arranged in series magnetically. Two instances of the flux barrier corresponding to the respective permanent magnets 22 and 23 arranged in series magnetically, communicate with each other. According to another embodiment in the present disclosure, a motor 1 includes the rotor 20 described above.
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公开(公告)号：US20180183285A1
公开(公告)日：2018-06-28
申请号：US15759281
申请日：2016-09-27
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yoshinari ASANO , Yoshiki YASUDA , Masaki HIRANO
CPC classification number: H02K1/27 , H02K1/2766 , H02K15/03 , H02K21/14 , H02K29/03 , H02K2201/06 , H02K2213/03
Abstract: A rotor includes a rotor core and a bond magnet. The rotor core has core blocks and a partition core sandwiched between the core blocks in an axial direction. Magnet holes pass through the core blocks and the partition core in the axial direction, respectively, and the magnet hole is communicated with the magnet holes. Positions of the magnet holes in a circumferential direction are deviated from each other. The bond magnet fills the magnet holes.
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