Patents by Inventor Zhuonan Wang
Zhuonan Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9553495Abstract: A wound core formed of a magnetic thin band, an electromagnetic component and a manufacturing method therefor and electromagnetic equipment in which iron loss and cost reduction can be achieved are provided. The wound core is a wound core formed by winding a magnetic thin band in the axial direction. A cutout portion is formed from place to place on an end face of the thin band in the axial direction and the cutout portions are arranged in random directions in the direction of the radius of the wound core.Type: GrantFiled: February 6, 2012Date of Patent: January 24, 2017Assignee: HITACHI METALS, LTD.Inventors: Zhuonan Wang, Yuji Enomoto, Shigeho Tanigawa
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Patent number: 9350206Abstract: An axial-gap rotating electrical machine in which the distance of the air gap between a rotor and a stator can be accurately controlled is provided. A large diameter portion and a small diameter portion are formed on a rotating shaft and a stepped portion is formed therebetween. A rotor yoke is secured thereon and the position of the rotor is determined. The position of a bearing secured in a housing for rotatably supporting the rotating shaft is determined by a boss portion of the rotor yoke. The position of the housing is determined by the position of the bearing and the securing position of the stator is determined by a stepped portion formed on the inner circumference of the housing. Thus the position of the housing relative to the rotating shaft can be determined from the position of the rotor and the securing position of the stator can be determined.Type: GrantFiled: August 8, 2013Date of Patent: May 24, 2016Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Zhuonan Wang, Yuji Enomoto, Kenichi Soma
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Patent number: 9154020Abstract: An axial gap rotating-electric machine includes a stator, a rotor arranged via an air gap in the direction of an axis of rotation of a rotating-electric machine with respect to the stator, and a housing configured to accommodate the stator and the rotor, and the stator includes a plurality of stator cores arranged in the circumferential direction, coils configured to wind the peripheries of the respective stator cores, and a resin for molding the plurality of stator cores wound with the coils, and the stator cores each include a protruding portion protruding partly from the coil in the direction of axis of rotation, and a conductive member is provided so as to come into contact with peripheral surfaces of the protruding portions of the stator cores, and grounding is achieved by the conductive member.Type: GrantFiled: July 3, 2013Date of Patent: October 6, 2015Assignee: Hitachi, Ltd.Inventors: Kenta Deguchi, Hirooki Tokoi, Zhuonan Wang, Norihisa Iwasaki, Yuji Enomoto
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Patent number: 9054572Abstract: A wound core formed of a magnetic thin band, an electromagnetic component and a manufacturing method therefor and electromagnetic equipment in which iron loss and cost reduction can be achieved are provided. The wound core is a wound core formed by winding a magnetic thin band in the axial direction. A cutout portion is formed from place to place on an end face of the thin band in the axial direction and the cutout portions are arranged in random directions in the direction of the radius of the wound core.Type: GrantFiled: February 6, 2012Date of Patent: June 9, 2015Assignee: HITACHI METALS, LTD.Inventors: Zhuonan Wang, Yuji Enomoto, Shigeho Tanigawa
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Patent number: 8937422Abstract: The magnetic iron core includes an amorphous foil strip wound to form the magnetic iron core. Preferably, the magnetic iron core is filled with resin, the resin being disposed by using a spacer between pluralities of windings of the amorphous foil strip. Preferably, the magnetic iron core is covered with resin integrated with and continuous to the resin disposed between pluralities of windings of the amorphous foil strip.Type: GrantFiled: October 22, 2010Date of Patent: January 20, 2015Assignees: Hitachi Industrial Equipment Systems Co., Ltd., Hitachi Appliances, Inc.Inventors: Yuji Enomoto, Zhuonan Wang, Ryoso Masaki, Hiromitsu Itabashi
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Patent number: 8836192Abstract: In the axial gap rotating electrical machine, the rotor includes a rotor yoke that is formed by wrapping amorphous ribbon wound toroidal core, which is obtained by winding an amorphous magnetic metal ribbon into a toroidal core. Magnets having plural poles are circumferentially disposed on a stator-facing surface of the amorphous ribbon wound toroidal core.Type: GrantFiled: December 28, 2010Date of Patent: September 16, 2014Assignees: Hitachi Industrial Equipment Systems Co., Ltd., Hitachi Metals, Ltd., Hitachi Appliances, Inc.Inventors: Zhuonan Wang, Yuji Enomoto, Ryoso Masaki, Hiromitsu Itabashi, Tomio Yoshikawa
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Patent number: 8786155Abstract: When an axial gap rotating electrical machine is assembled, stator cores are accurately positioned and a manufacturing process therefor is simplified. The axial gap rotating electrical machine comprises: a housing frame body having a first space in the cylindrical central part thereof and multiple second spaces located in the circumferential direction which have the same distances from the center; a shaft rotatably provided in the first space in the housing frame body; a core placed in each of the second spaces in the housing frame body and a coil arranged around the core; a rotor yoke fixed on the shaft, extended in the direction of the circumference thereof, and having multiple magnets arranged in circumferential positions confronting the cores; and a case having a hole for the shaft and housing the housing frame body and the rotor yoke.Type: GrantFiled: August 16, 2011Date of Patent: July 22, 2014Assignees: Hitachi Appliances, Inc., Hitachi Metals, Ltd., Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Zhuonan Wang, Yuji Enomoto, Motoya Ito, Ryoso Masaki, Hiromitsu Itabashi, Baiying Huang
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Patent number: 8680736Abstract: An armature core includes a core portion formed of a lamination of plural non-crystalline metallic foil bands, wherein the armature core is provided with at least two cut surfaces with respect to the lamination layers. Amorphous metal is used as the iron base of the non-crystalline metallic foil bands. The cut surfaces are perpendicular to the lamination layers of the non-crystalline foil bands. Still further, the stator includes a stator core holding member in a disc form, the stator having a plurality of holes or recessions that are substantially in the same shape as a cross-sectional shape of the stator cores and wherein the stator cores are inserted in the holes or recessions of the stator core holding member and held by fixing in vicinities of respective central portions thereof, the central portions being with respect to the axial direction thereof.Type: GrantFiled: November 10, 2009Date of Patent: March 25, 2014Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Zhuonan Wang, Yuji Enomoto, Shigeki Morinaga, Ryoso Masaki, Shigeho Tanigawa, Hiromitsu Itabashi, Motoya Ito
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Publication number: 20140042859Abstract: An axial-gap rotating electrical machine in which the distance of the air gap between a rotor and a stator can be accurately controlled is provided. A large diameter portion and a small diameter portion are formed on a rotating shaft and a stepped portion is formed therebetween. A rotor yoke is secured thereon and the position of the rotor is determined. The position of a bearing secured in a housing for rotatably supporting the rotating shaft is determined by a boss portion of the rotor yoke. The position of the housing is determined by the position of the bearing and the securing position of the stator is determined by a stepped portion formed on the inner circumference of the housing. Thus the position of the housing relative to the rotating shaft can be determined from the position of the rotor and the securing position of the stator can be determined.Type: ApplicationFiled: August 8, 2013Publication date: February 13, 2014Applicant: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Zhuonan WANG, Yuji ENOMOTO, Kenichi SOMA
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Publication number: 20140009009Abstract: An axial gap rotating-electric machine includes a stator, a rotor arranged via an air gap in the direction of an axis of rotation of a rotating-electric machine with respect to the stator, and a housing configured to accommodate the stator and the rotor, and the stator includes a plurality of stator cores arranged in the circumferential direction, coils configured to wind the peripheries of the respective stator cores, and a resin for molding the plurality of stator cores wound with the coils, and the stator cores each include a protruding portion protruding partly from the coil in the direction of axis of rotation, and a conductive member is provided so as to come into contact with peripheral surfaces of the protruding portions of the stator cores, and grounding is achieved by the conductive member.Type: ApplicationFiled: July 3, 2013Publication date: January 9, 2014Inventors: Kenta DEGUCHI, Hirooki TOKOI, Zhuonan WANG, Norihisa IWASAKI, Yuji ENOMOTO
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Publication number: 20130328429Abstract: Provided are: a low cost, high-performance motor unit which has a large capacity obtained without increasing the radial size of the axial gap motor and which can be assembled with improved efficiency; and a dynamo-electric machine and a dynamo-electric machine device which use the motor unit. A motor unit comprises: an in-unit shaft; a stator provided along the circumferential direction of the in-unit shaft; two rotors rotating together with the in-unit shaft and provided so as to face both surfaces of the stator in the circumferential direction; and engagement sections provided to the surface of each of the rotors which is on the side opposite the stator. Such motor units are engaged with each other at the engagement sections and rotate integrally.Type: ApplicationFiled: December 20, 2011Publication date: December 12, 2013Applicant: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Yuji Enomoto, Zhuonan Wang, Ryoso Masaki
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Patent number: 8373326Abstract: An axial gap motor includes a stator having stator teeth, and also includes a rotor opposed to the stator with a gap in an axial direction of the stator. Each of the stator teeth includes a stator tooth body, a stator tooth end joined to at least one axial-direction end of the stator tooth body, and a stator coil disposed around the stator tooth body. The stator tooth body includes a wound core comprised of a multi-layered amorphous foil strip winding. The stator tooth end is formed by a compact including a powder magnetic core, and the stator tooth end includes a surface opposed to the rotor. A cross-sectional area of the stator tooth end perpendicular to an axis of the amorphous foil strip winding is larger than a cross-sectional area of the stator tooth body perpendicular to the axis of the amorphous foil strip winding.Type: GrantFiled: October 22, 2010Date of Patent: February 12, 2013Assignees: Hitachi Metals, Ltd., Hitachi Appliances, Inc.Inventors: Yuji Enomoto, Zhuonan Wang, Ryoso Masaki, Hiromitsu Itabashi, Kazumasa Ide
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Publication number: 20120248930Abstract: A wound core formed of a magnetic thin band, an electromagnetic component and a manufacturing method therefor and electromagnetic equipment in which iron loss and cost reduction can be achieved are provided. The wound core is a wound core formed by winding a magnetic thin band in the axial direction. A cutout portion is formed from place to place on an end face of the thin band in the axial direction and the cutout portions are arranged in random directions in the direction of the radius of the wound core.Type: ApplicationFiled: February 6, 2012Publication date: October 4, 2012Inventors: Zhuonan WANG, Yuji ENOMOTO, Shigeho TANIGAWA
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Publication number: 20120049685Abstract: When an axial gap rotating electrical machine is assembled, stator cores are accurately positioned and a manufacturing process therefor is simplified. The axial gap rotating electrical machine is comprised of: a housing frame body having a first space in the cylindrical central part thereof and multiple second spaces located in the circumferential direction which have the same distances from the center; a shaft rotatably provided in the first space in the housing frame body; a core placed in each of the second spaces in the housing frame body and a coil arranged outside of the core; a rotor yoke fixed on the shaft, extended in the direction of the circumference thereof, and having multiple magnets arranged in circumferential positions confront the cores; and a case having a hole for the shaft and housing the housing frame body and the rotor yoke.Type: ApplicationFiled: August 16, 2011Publication date: March 1, 2012Inventors: Zhuonan WANG, Yuji Enomoto, Motoya Ito, Ryoso Masaki, Hiromitsu Itabashi, Baiying Huang
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Publication number: 20110156519Abstract: In the axial gap rotating electrical machine, the rotor includes a rotor yoke that is formed by wrapping amorphous ribbon wound toroidal core, which is obtained by winding an amorphous magnetic metal ribbon into a toroidal core. Magnets having plural poles are circumferentially disposed on a stator-facing surface of the amorphous ribbon wound toroidal core.Type: ApplicationFiled: December 28, 2010Publication date: June 30, 2011Inventors: Zhuonan WANG, Yuji Enomoto, Ryoso Masaki, Hiromitsu Itabashi, Tomio Yoshikawa
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Publication number: 20110095628Abstract: The present invention provides a low-iron-loss (high-efficiency) and low-cost axial gap motor that includes a high-quality soft magnetic material placed at an appropriate position, reduces torque pulsation, keeps induced voltage in the shape of a sine wave, and increases the degree of freedom in design. The axial gap motor includes a stator having stator teeth; and a rotor being opposed to the stator with a gap in an axial direction of the stator. Each of the stator teeth includes a stator tooth body, a stator tooth end joined to at least one axial-direction end of the stator tooth body, and a stator coil disposed around the stator tooth body. The stator tooth body includes a wound core comprised of a multi-layered amorphous foil strip winding. The stator tooth end is formed by a compact made of a powder magnetic core, and includes an opposed surface to the rotor.Type: ApplicationFiled: October 22, 2010Publication date: April 28, 2011Inventors: Yuji ENOMOTO, Zhuonan Wang, Ryoso Masaki, Hiromitsu Itabashi, Kazumasa Ide
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Publication number: 20110095642Abstract: The invention provides a high-quality magnetic iron core by concurrently satisfying requirements for enhancement in strength of a wound iron core, particularly, strength of a wound iron core made up of amorphous foil strips, reduction in manufacturing time, and manufacturing cost. The invention also provides an electromagnetic application product highly efficient and small in size as an application of the magnetic iron core. The magnetic iron core includes an amorphous foil strip being wound to form the magnetic iron core. The magnetic iron core is filled with resin, the resin being disposed in every plural turns of windings of the amorphous foil strip. Preferably, the magnetic iron core is filled with the resin, the resin being disposed by using a spacer in every plural turns of windings of the amorphous foil strip. Preferably, the magnetic iron core is covered with resin which is integrated with and continuous to the resin disposed in every plural turns of windings of the amorphous foil strip.Type: ApplicationFiled: October 22, 2010Publication date: April 28, 2011Inventors: Yuji ENOMOTO, Zhuonan Wang, Ryoso Masaki, Hiromitsu Itabashi
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Publication number: 20100148611Abstract: An armature core includes a core portion formed of a lamination of plural noncrystalline metallic foil bands and resin for bond-fixing the non-crystalline metallic foil bands, wherein the armature core is provided with at least two cut surfaces with respect to the lamination layers. Amorphous metal is used as the iron base of the non-crystalline metallic foil bands. The cut surfaces are perpendicular to the lamination-layers of the non-crystalline foil bands. For the amorphous core, a resin mold is formed. The contact portions between winding wires and amorphous are provided with edge roundness. Further, an axial gap motor using cut cores of amorphous lamination as stator cores is provided.Type: ApplicationFiled: November 10, 2009Publication date: June 17, 2010Inventors: Zhuonan Wang, Yuji ENOMOTO, Shigeki MORINAGA, Ryoso MASAKI, Shigeho TANIGAWA, Hiromitsu ITABASHI, Motoya ITO