公开(公告)号：US20210083536A1

公开(公告)日：2021-03-18

申请号：US16961798

申请日：2018-01-24

Applicant: Mitsubishi Electric Corporation

Inventor： Kazuhiko BABA

IPC: H02K1/27 ,  H02K1/28

Abstract: A motor includes a rotor rotatable in a rotating direction about an axis, and a stator surrounding the rotor. A rotor core includes a magnet insertion hole corresponding to one magnetic pole, and a plurality of slits on an outer side of the magnet insertion hole in the radial direction. The slits include a first slit located most upstream in the rotating direction. Each slit has a tip portion and a root portion. The tip portion of the first slit is located upstream of the root portion of the first slit in the rotating direction, and is located upstream of a magnetic pole center in the rotating direction. The root portions of the slits are disposed more in number in a second region downstream of the magnetic pole center in the rotating direction than in a first region upstream of the magnetic pole center in the rotating direction.

公开(公告)号：US20190027980A1

公开(公告)日：2019-01-24

申请号：US16070806

申请日：2016-04-01

Applicant: Mitsubishi Electric Corporation

Inventor： Takaya SHIMOKAWA ,  Kazuhiko BABA ,  Koji YABE

IPC: H02K1/27 ,  H02K21/14 ,  H02K29/08 ,  H02K11/215 ,  H02K15/03

Abstract: A sensor magnet includes: a first magnetic-pole part including a magnetic pole of first polarity; a second magnetic-pole part including a magnetic pole of second polarity; and an inter-pole part formed between the first magnetic-pole part and the second magnetic-pole part. A width of the inter-pole part is larger than both of a width of the first magnetic-pole part and a width of the second magnetic-pole part.

公开(公告)号：US20160181877A1

公开(公告)日：2016-06-23

申请号：US14910298

申请日：2013-09-25

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Atsushi ISHIKAWA ,  Masahiro NIGO ,  Kazuchika TSUCHIDA ,  Kazuhiko BABA

IPC: H02K1/27 ,  F25B31/02

CPC classification number: H02K1/276 ,  F25B1/04 ,  F25B31/026 ,  H02K1/2766 ,  H02K2213/03

Abstract: In an interior permanent magnet motor, a plurality of slits are formed between a rotor outer peripheral surface of a rotor and a radially-outer insertion hole contour surface of a magnet insertion hole. Assuming that a total area of the plurality of slits per magnetic pole is represented by Ss, and an area of a region in a rotor core on a radially outer side with respect to the corresponding one magnet insertion hole is represented by Si, the plurality of slits are formed so as to satisfy a relationship of 0.35≦Ss/Si≦0.5.

Abstract translation: 在内部永磁电动机中，在转子的外周面与磁体插入孔的径向外侧插入孔轮廓面之间形成多个狭缝。 假设每个磁极的多个狭缝的总面积由Ss表示，并且相对于相应的一个磁体插入孔的径向外侧的转子芯中的区域的面积由Si表示， 狭缝形成为满足0.35≤nlE; Ss / Si＆nlE; 0.5的关系。

公开(公告)号：US20160087498A1

公开(公告)日：2016-03-24

申请号：US14787783

申请日：2014-05-20

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Atsushi MATSUOKA ,  Kazuhiko BABA ,  Hiroki ASO ,  Yuto URABE

IPC: H02K3/18 ,  H02K1/14 ,  H02K1/02 ,  H02K3/28

Abstract: A 10-pole/9-slot synchronous motor includes nine teeth that are divided into three phases, each having three adjacent teeth. A stator iron core is configured such that a value obtained by dividing b by a is larger than 0.5 where the a is a width of a teeth tip, which is provided on an inner diameter side of a tooth of the teeth formed on the stator iron core, from a base portion between the teeth tip and the tooth to a circumferential end of the teeth tip and the b is a thickness of the teeth tip from the base portion to an inner-diameter side surface of the teeth tip.

Abstract translation: 10针/ 9槽同步电机包括分为三相的九个齿，每个齿具有三个相邻的齿。 定子铁芯构造成使得b除以a所得到的值大于0.5，其中a是齿尖的宽度，其设置在形成在定子铁上的齿的齿的内径侧上 芯从齿尖和齿之间的基部到齿尖的周向端，并且b是从尖端的基部到内径侧表面的齿尖的厚度。

公开(公告)号：US20230208223A1

公开(公告)日：2023-06-29

申请号：US17999272

申请日：2020-06-25

Applicant: Mitsubishi Electric Corporation

Inventor： Kazuhiko BABA

IPC: H02K1/276 ,  H02K21/16 ,  F25B31/02

CPC classification number: H02K1/276 ,  H02K21/16 ,  F25B31/026 ,  H02K2213/03

Abstract: A motor includes a rotor including a rotor core fixed to a rotary shaft of a compressor, and permanent magnets fixed to the rotor core, and a stator including a stator core surrounding the rotor core from outside in a radial direction about a central axis of the rotary shaft. The rotor core has a first core and a second core in a direction of the central axis. The first core has a hole portion at a center thereof in the radial direction, and has magnet insertion holes located on an outer side of the hole portion in the radial direction. The permanent magnet is inserted in the magnet insertion hole. The permanent magnet constitutes a magnet magnetic pole, and a part of the first core constitutes a pseudo magnetic pole. The second core has a shaft hole at a center thereof in the radial direction. The rotary shaft is fixed to the shaft hole. An inner circumference of the hole portion of the first core is distanced from the rotary shaft in the radial direction. The second core is located on an outer side of the stator core in the direction of the central axis.

公开(公告)号：US20180062460A1

公开(公告)日：2018-03-01

申请号：US15555995

申请日：2015-03-18

Applicant: Mitsubishi Electric Corporation

Inventor： Kazuhiko BABA ,  Naohiro OKETANI ,  Koji YABE

IPC: H02K1/27 ,  H02K1/14 ,  B60H1/32

CPC classification number: H02K1/274 ,  B60H1/32 ,  B60H2001/3286 ,  H02K1/146 ,  H02K1/276 ,  H02K21/16 ,  H02K2213/03

Abstract: A permanent-magnet-embedded electric motor includes a stator core including a yoke and a plurality of teeth, a rotor core including a plurality of magnet insertion holes, and a plurality of permanent magnets respectively inserted into the magnet insertion holes, each being arranged with a lateral direction set in a radial direction of the rotor core and with a longitudinal direction set in a direction orthogonal to the radial direction. When a width of base sections of the teeth is represented as S1, a width of a distal end sections of the teeth is represented as S2, a width of the permanent magnets in the longitudinal direction is represented as R1, and a width of the magnet insertion holes in an extension direction thereof is represented as R2, relations of S1≦R1

公开(公告)号：US20170047802A1

公开(公告)日：2017-02-16

申请号：US15307097

申请日：2014-07-01

Applicant: Mitsubishi Electric Corporation

Inventor： Koji YABE ,  Kazuhiko BABA ,  Takahiro TSUTSUMI

IPC: H02K1/32 ,  H02K17/04 ,  H02K17/16

CPC classification number: H02K1/32 ,  H02K9/19 ,  H02K17/04 ,  H02K17/16 ,  H02K17/165 ,  H02K2213/03

Abstract: A rotor is connected to a shaft member and rotates about a central axis. The rotor includes a shaft hole having at least part of the shaft member disposed therein; and flow paths disposed around the shaft member and penetrating the rotor in a direction parallel with the central axis. Each flow path has a first surface facing outward in the radial direction; a second surface disposed outward of the first surface in the radial direction and facing the first surface; a third surface connecting the first and second surfaces at one end in a rotational direction about the central axis; a fourth surface connecting the first and second surfaces at the other end in the rotational direction. The condition C

Abstract translation: 转子连接到轴构件并围绕中心轴线旋转。 转子包括轴孔，轴孔的至少一部分设置在其中; 以及设置在所述轴构件周围并且沿与所述中心轴线平行的方向穿过所述转子的流路。 每个流动路径具有在径向方向上面向外的第一表面; 第二表面，设置在所述第一表面的径向外侧并面向所述第一表面; 第一表面和第二表面在围绕中心轴线的旋转方向的一端连接; 在旋转方向的另一端连接第一和第二表面的第四表面。 满足条件C

公开(公告)号：US20160344269A1

公开(公告)日：2016-11-24

申请号：US15114891

申请日：2014-03-31

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Koji YABE ,  Kazuhiko BABA ,  Takahiro TSUTSUMI ,  Tomoaki OIKAWA

IPC: H02K15/00 ,  H02K15/10 ,  H02K3/50 ,  H02K5/22 ,  H02K3/02 ,  H02K3/32

CPC classification number: H02K15/0068 ,  H02K3/02 ,  H02K3/32 ,  H02K3/345 ,  H02K3/50 ,  H02K5/225 ,  H02K15/10 ,  H02K2203/06 ,  H02K2213/03

Abstract: A motor including a rotor, and a stator having a plurality of coils wound around slots, wherein at least any one of the coils includes a single aluminum wire, a single copper wire joined to the aluminum wire, a stranded wire (lead wire) joined to the copper wire, a cold-pressure-welded joint portion (joint portion) joined between the aluminum wire and the copper wire by cold pressure welding, and a non-pressure welded joint portion (joint portion) provided between the copper wire and the stranded wire (lead wire). A burr covered by an insulation member (insulation tube) is provided in the cold-pressure-welded joint portion (joint portion). A thickness of the insulation member (insulation tube) is larger than a height of the burr.

Abstract translation: 一种电动机，包括转子和具有缠绕在槽上的多个线圈的定子，其中至少任一个线圈包括单个铝线，连接到铝线的单个铜线，连接在一起的绞线（引线） 通过冷压接合连接在铝线和铜线之间的冷压焊接部（接合部）和铜线与铜线之间的非压接焊接部（接合部） 绞线（引线）。 在冷压接合部（接合部）中设置由绝缘部件（绝缘管）覆盖的毛刺。 绝缘部件（绝缘管）的厚度大于毛刺的高度。

公开(公告)号：US20160172913A1

公开(公告)日：2016-06-16

申请号：US14909497

申请日：2013-09-25

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Kazuhiko BABA ,  Masahiro NIGO ,  Kazuchika TSUCHIDA ,  Atsushi ISHIKAWA

IPC: H02K1/27 ,  F04C18/00 ,  F04C29/00 ,  F25B31/02

CPC classification number: H02K1/276 ,  F04C18/00 ,  F04C29/0085 ,  F04C2240/40 ,  F25B31/026 ,  H02K1/2766

Abstract: In an interior permanent magnet motor, at least one magnetic pole center slit and a plurality of side slits are formed between a rotor outer peripheral surface of a rotor and a radially-outer insertion hole contour surface of a magnet insertion hole. The plurality of side slits are formed so that at least one side slit is formed on each of both sides of the magnetic pole center slit in a width direction. The area of the magnetic pole center slit is smaller than the area of each of the plurality of side slits. A width of each of the plurality of side slits is larger than an interval between the adjacent slits.

Abstract translation: 在内置永磁电动机中，在转子的转子外周面和磁铁插入孔的径向外插入孔轮廓面之间形成有至少一个磁极中心狭缝和多个侧缝。 形成多个侧缝，使得在磁极中心狭缝的宽度方向的两侧的每一侧形成至少一个侧缝。 磁极中心狭缝的面积小于多个侧缝隙的面积。 多个侧狭缝中的每一个的宽度大于相邻狭缝之间的间隔。

公开(公告)号：US20240305150A1

公开(公告)日：2024-09-12

申请号：US18254653

申请日：2020-12-25

Applicant: Mitsubishi Electric Corporation

Inventor： Kazuhiko BABA

IPC: H02K1/276 ,  F25B31/02 ,  H02K21/16

CPC classification number: H02K1/276 ,  F25B31/026 ,  H02K21/16 ,  F25B2500/16

Abstract: A rotor includes a first core, a second core, and two or more permanent magnets. The first core includes a first magnet accommodation hole, a first air hole, and a thin-core part. The second core includes a second magnet accommodation hole communicating with the first magnet accommodation hole, and a second air hole communicating with both of the second magnet accommodation hole and the first air hole. A first permanent magnet and a second permanent magnet of the two or more permanent magnets are disposed in the first magnet accommodation hole and the second magnet accommodation hole. A first space is provided between the first permanent magnet and the second permanent magnet.