专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

DE3415607A1 未知
公开(公告)号：DE3415607A1
公开(公告)日：1984-11-08
申请号：DE3415607
申请日：1984-04-26
申请人： HITACHI LTD
发明人： SENOO MASAHARU , NOMA KEIZI , SARUTA AKIRA , YOSHIZAKI MASANORI , TESHIROGI KOICHI , YAEGASHI KOUEI
IPC分类号： H02K1/27 , H02K7/04 , H02K21/46 , H02K15/16 , H02K5/128
摘要： A novel rotor construction is disclosed, in which plural permanent magnets are arranged on the outer periphery of a rotor core, which are protected with a cover, and in which a member is placed at an axial end of the rotor core cast with end rings with a balance weight on the outside thereof. The protective cover protects the outer peripheries of the end rings and dampens the centrifugal force of the balance weight. Projections provided on the outer periphery of the member are located at the center of the permanent magnets to reduce the leakage magnetic fluxes between the permanent magnets.

2. 发明专利

JP2012080713A Permanent magnet-type rotary electric machine and compressor using the same 审中-公开
标题翻译：永磁电机类型旋转电机和使用它的压缩机
公开(公告)号：JP2012080713A
公开(公告)日：2012-04-19
申请号：JP2010225634
申请日：2010-10-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WAKUI SHINICHI , TAKAHATA RYOICHI , NOMA KEIJI , SENOO MASAHARU
IPC分类号： H02K1/27 , F04C29/00 , H02K1/22 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet-type rotary electric machine displaying high efficiency and high performance in a wide range from low speed to high speed and to provide a compressor using the electric machine.SOLUTION: A rotor of the permanent magnet-type rotary electric machine includes: a rotor core; a plurality of insertion holes formed in the rotor core; and a plurality of permanent magnets inserted into the insertion holes. The insertion hole into which the permanent magnet is inserted is divided into at least two per pole of the rotor. The permanent magnets inserted into the insertion holes are asymmetrically arranged to a magnetic pole center of the rotor. Thus, reduction of influence of an anti-magnetic field by armature magnetic flux, a torque increase when the same current is energized, reduction of an eddy current loss of the permanent magnet and a weak field operation with small current are realized. Thus, the highly efficient and high performance permanent magnet-type rotary electric machine suitable for high speed rotation is provided.
摘要翻译：要解决的问题：提供一种从低速到高速的宽范围内显示高效率和高性能的永磁式旋转电机，并提供使用该电机的压缩机。永磁式旋转电机的转子包括：转子芯; 形成在所述转子铁心中的多个插入孔; 以及插入到插入孔中的多个永久磁铁。将永磁体插入的插入孔分成至少两个转子的每极。插入到插入孔中的永磁体不对称地设置在转子的磁极中心。因此，实现了通过电枢磁通减少抗磁场的影响，当相同的电流被激励时的转矩增加，永磁体的涡流损耗的减小以及小电流的弱磁场运行。因此，提供了适用于高速旋转的高效率和高性能的永磁式旋转电机。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2010031814A Oil-cooled screw compressor, motor driving system and motor control device 审中-公开
标题翻译：油冷螺杆压缩机，电机驱动系统和电机控制装置
公开(公告)号：JP2010031814A
公开(公告)日：2010-02-12
申请号：JP2008197175
申请日：2008-07-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAMETANI HIROCHIKA , YAMAZAKI MASARU , YASUJIMA TOSHIYUKI , SENOO MASAHARU , TANAKA HIDEHARU , SUZUKI NOBUNAGA
IPC分类号： F04C28/06 , F04C18/16
CPC分类号： F04B17/03 , F04C18/16 , F04C28/06 , F04C28/08 , F04C2270/051 , F04C2270/19 , F04C2270/701
摘要： PROBLEM TO BE SOLVED: To solve problems wherein, when starting an oil-cooled screw compressor after a long time stop in cold environment, starting torque is increased by a rise in viscosity of oil accumulated in a working chamber and a driving means with a capacity larger than required in normal operation is required. SOLUTION: The oil-cooled screw compressor is provided with a casing, a pair or rotors housed in the casing and having a threaded tooth groove, an electric motor for rotating and driving the rotors, a control device for controlling the electric motor, an oil supply mechanism for supplying the oil to the working chamber surrounded by the rotor and the casing by meshing the tooth grooves of the pair of the rotors, and an oil separating mechanism for separating the oil from compressed gas delivered from the working chamber. Only in a short time just after starting, driving is performed in a low speed not enlarging torque and the oil is delivered, and then, the speed is increased to the ordinary operation speed. Alternatively, the residual pressure is released after stopping, and then, the rotor is rotated for a short time, and thereby, the oil accumulated in the working chamber is delivered, and the next starting is lightened. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题为了解决在冷环境中长时间停止后启动油冷螺杆式压缩机的问题，通过在工作室内积存的油的粘度上升，驱动装置需要容量大于正常工作要求的容量。解决方案：油冷螺杆式压缩机设置有容纳在壳体中的壳体，一对或转子，具有螺纹齿槽，用于旋转和驱动转子的电动机，用于控制电动机的控制装置供油机构，用于通过啮合所述一对转子的齿槽而将油供给到由所述转子和所述壳体包围的所述工作室;以及油分离机构，用于将油与从所述工作室排出的压缩气体分离。仅在起动后的短时间内，以低速不加大转矩进行驱动，油被输送，然后将速度提高到正常的操作速度。或者，停止后释放残留压力，然后使转子旋转短时间，由此输送积聚在工作室中的油，并且下一次起动被减轻。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2002272023A PERMANENT MAGNET ROTATING ELECTRIC MACHINE 失效
公开(公告)号：JP2002272023A
公开(公告)日：2002-09-20
申请号：JP2001065915
申请日：2001-03-09
申请人： HITACHI LTD
发明人： TAKAHATA RYOICHI , WAKUI SHINICHI , OHARAGI HARUO , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , SENOO MASAHARU , NOMA KEIJI , HIRAYAMA HIROSHI , SESHIMO KOJI , KAWAMINAMI SHIGEYA
IPC分类号： H02K1/16 , H02K1/27 , H02K3/18 , H02K21/14 , H02K21/16 , H02K29/03
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotating electric machine that can solve noise problem, even if it adopts concentrated windings. SOLUTION: Low noise can be achieved by providing roughly parallel portions on a part of the outside circumferential surface of slots and the inside circumferential surface of teeth in a permanent magnet rotating electric machine, having a stator on which armature concentrated windings are provided, in such a way as to surround teeth in a plurality of slots formed in stator iron cores and a rotor with the permanent magnets stored in a plurality of permanent-magnet inserting holes formed in iron cores of the rotor.

5. 发明专利

JP2002171730A PERMANENT MAGNET ROTATING ELECTRIC MACHINE AND AIR CONDITIONER FITTED WITH THE SAME 失效
公开(公告)号：JP2002171730A
公开(公告)日：2002-06-14
申请号：JP2000368276
申请日：2000-12-04
申请人： HITACHI LTD
发明人： OHARAGI HARUO , SENOO MASAHARU , NOMA KEIJI , ISHII KOHEI , SATO KAZUO , KIKUCHI SATOSHI , TAKAHASHI MIYOSHI , YAMAMOTO KOKI
IPC分类号： F25B31/02 , H02K1/27 , H02K19/10 , H02K21/16 , H02K29/00
摘要： PROBLEM TO BE SOLVED: To provide a permanent magnet rotating electric machine and an air conditioner fitted with the machine, which increases system efficiency even if the machine is driven by a position-sensorless 120-degree energizing inverter. SOLUTION: A plurality of permanent magnets 10 are arranged inside a rotor core 8 into a protruded V or U-shape, with respect to a shaft 11 of a rotor 7, and a recess 12 is formed with a magnetic bridge 14 between, on the peripheral surface of the rotor core 8 and inside the magnetic pole of each permanent magnet 10.

6. 发明专利

JP2001178036A PERMANENT-MAGNET DYNAMO-ELECTRIC MACHINE 失效
公开(公告)号：JP2001178036A
公开(公告)日：2001-06-29
申请号：JP35150399
申请日：1999-12-10
申请人： HITACHI LTD
发明人： SASAKI MANABU , OHARAGI HARUO , YAMAMOTO KOKI , TAKAHASHI MIYOSHI , NOMA KEIJI , SATO KAZUO , SENOO MASAHARU
IPC分类号： H02K19/10 , H02K1/27 , H02K21/14
摘要： PROBLEM TO BE SOLVED: To provide a permanent-magnet electric rotating machine, capable of reducing cogging torque and iron loss and obtaining sufficient main magnetic flux torque. SOLUTION: The magnetic poles of a permanent magnet 9 are so oriented that their focal points are positioned substantially on a d-axis connecting the axis of a rotor 6 and the center of the permanent magnet 9 in the circumferential direction and the focal point of the magnetic pole orientation becomes more distant, going from the both-side ends of the permanent magnet 9 in the circumferential direction, toward its center in the circumferential direction.

7. 发明专利

JP2001136687A PERMANENT MAGNET ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JP2001136687A
公开(公告)日：2001-05-18
申请号：JP31775599
申请日：1999-11-09
申请人： HITACHI LTD
发明人： KIKUCHI SATOSHI , OHARAGI HARUO , SASAKI MANABU , TAKAHASHI MIYOSHI , SENOO MASAHARU , SATO KAZUO , NOMA KEIJI
IPC分类号： H02K1/18 , H02K1/14 , H02K21/14 , H02K29/00
摘要： PROBLEM TO BE SOLVED: To provide a multipole permanent magnet rotary electric machine that can achieve high efficiency, and miniaturize the size of the machine. SOLUTION: The permanent magnet rotary electric machine is composed of a plurality of tooth cores 2 obtained by dividing a stator core and a core back core 3, and is equipped with a stator 1 where stator core coil winding 4 is wound while the tooth core 2 is surrounded and a rotor 5 with a permanent magnet 8. In this case, a radial engagement part 16 between the core back core and tooth core 3 and 2 is provided on the outside of the central position in the radial direction of the core back core 3.

8. 发明专利

JP2000341889A DYNAMO-ELECTRIC MACHINE CORE, MANUFACTURE THEREOF, CORE SEGMENTS AND DYNAMO-ELECTRIC MACHINE 失效
公开(公告)号：JP2000341889A
公开(公告)日：2000-12-08
申请号：JP14481699
申请日：1999-05-25
申请人： HITACHI LTD
发明人： ENOMOTO YUJI , TANEDA KOKI , YAMAMOTO NORIAKI , ISHIGAMI TAKASHI , SAKAI TOSHIHIKO , SHIBUKAWA SUETARO , SENOO MASAHARU
IPC分类号： H02K1/18 , H02K1/02 , H02K1/14 , H02K3/18 , H02K15/02
摘要： PROBLEM TO BE SOLVED: To provide a dynamo-electric machine core, which comprises parts where a high magnetic flux density is required and parts where a high magnetic flux density is not required and whose respective parts are made of suitable different materials in order to improve the utilization of the core materials of the stator of the dynamo-electric machine. SOLUTION: A dynamo-electric machine core has a core back part 22 and a plurality of tooth parts 21. The core back part 22 and the plurality of tooth parts 21 are prepared separately. A plurality of tooth connection parts 221, to which the respective tooth parts 21, are connected are formed on the inner circumference of the core back part 22. The base ends 213 of the tooth parts 21 are attached to the tooth connection parts 221, and the tooth parts 21 are connected to the core back part 22. The core back part 22 consists of a plurality of layered annular coreback layers, which are respectively composed of a plurality of segments 220 lniked with each other to form the annular layers.

9. 发明专利

JP2000156945A PERMANENT MAGNET ELECTRIC ROTATING MACHINE AND PERMANENT MAGNET INDUCTION SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2000156945A
公开(公告)日：2000-06-06
申请号：JP32770498
申请日：1998-11-18
申请人： HITACHI LTD
发明人： KIN KOUCHIYUU , OHARAGI HARUO , KIKUCHI SATOSHI , KOBAYASHI KOJI , SENOO MASAHARU , SATO KAZUO
IPC分类号： H02K29/00 , H02K1/27 , H02K15/03
摘要： PROBLEM TO BE SOLVED: To provide the rotor of a permanent magnet electric rotating machine and a permanent magnet induction synchronous motor by which a large torque generated by permanent magnets can be obtained. SOLUTION: Auxiliary poles 6 are provided on a d-axis of a rotor core 1. Two central permanent magnets 2a are provided so as to make their same polarities face each other with the auxiliary poles 6 therebetween. The central permanent magnet 2a is magnetized in a circumferential direction. Main permanent magnets 2b are provided between the rotor inner diameter side end parts of the central permanent magnets 2a and a q-axis of the rotor core 1. The main permanent magnet 2b is magnetized in a radial direction. In a rotor as above described, secondary conductors may be provided on the outer circumference side of the main permanent magnets 2b to constitute a permanent magnet induction synchronous motor.

10. 发明专利

JP2000156943A STATOR OF ROTARY ELECTRIC MACHINE 失效
公开(公告)号：JP2000156943A
公开(公告)日：2000-06-06
申请号：JP32770398
申请日：1998-11-18
申请人： HITACHI LTD
发明人： OHARAGI HARUO , KIKUCHI SATOSHI , SENOO MASAHARU , SATO KAZUO
IPC分类号： H02K1/12 , H02K1/20
摘要： PROBLEM TO BE SOLVED: To realize high efficiency and reduction in the size of a machine by continuously bridging the end portions at the internal circumference side of the adjacent teeth iron cores. SOLUTION: A stator 1 is formed of a teeth iron core 2 of identical shape, a core-back iron core 3 and a stator winding 4. A stator wining 4 of the centralized winding is accommodated within a slot 5 between teeth iron cores 2. The teeth iron cores 2 are connected with a bridge 6, a stepped portion 7 is formed to both side surfaces of the teeth iron core 2 and cutting portions 8, 9 are formed to the side surface near the external circumference of the teeth iron core 2 and to the external circumferencial surface thereof. As a result, laser welding is unnecessary and an eddy current is not generated, a gap at the facing area of the teeth iron core 2 and core-back iron core 3 can be wade to approximated zero as much as possible. As a result, high efficiency and reduction in the size of machine can be realized.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式