Radially Stacked Patents (Class 310/216.045)
  • Patent number: 9608490
    Abstract: A compressor includes a casing, a compression mechanism arranged inside the casing, a motor arranged inside the casing, and an insulation sheet. The motor drives the compression mechanism. The motor is a concentrated-winding motor having a stator that has a plurality of teeth, and an insulator adjacent to the stator, with windings wound about the teeth with the insulator interposed between the windings and the teeth. The insulation sheet is arranged between the casing and crossover wires of the windings.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: March 28, 2017
    Assignee: Daikin Industries, Ltd.
    Inventors: Keiji Aota, Akinobu Ishizaki
  • Patent number: 8968501
    Abstract: A method for building a magnetic core including laminations bound into packs for an electrical machine comprises steps of: stacking a group of laminations one on top of the other to build the core; binding into a pack the group building the core by locking members that axially compress the group with a predetermined clamping force; pre-compressing, before clamping the pack by the locking members, the group by a pre-compression press that is independent and separate from the locking members; measuring an axial length of the group while the group is being compressed by the pre-compression press; initially forming the group with a normally lacking number of laminations to initially have the measured length that is lower than or substantially equal to a desired length; and adding, after having completed pre-compression, an additional number of laminations to the group determined according to a difference between the desired and measured lengths.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: March 3, 2015
    Assignee: Magneti Marelli S.p.A.
    Inventors: Franco Ciampolini, Vincenzo Giorgianni, Patrick Giuliani
  • Patent number: 8941282
    Abstract: A stator core (105) including tabbed laminations (100) stacked face-to-face to form a plurality of tabbed lamination modules (107), with each tabbed lamination including a first tab (102) and a second tab (104) extending from a circumferential edge of the lamination. Non-tabbed laminations are also stacked face-to-face to form a plurality of non-tabbed lamination modules (109), each non-tabbed lamination lacking a tab. The tabbed lamination modules are stacked face-to-face in an alternating configuration with non-tabbed lamination modules. The tabs are used to attach the stator core to an inside surface of an electrical generator frame (2), such as by attaching the tabs to frame support rings (4) of the generator frame.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: January 27, 2015
    Assignee: Siemens Energy, Inc.
    Inventors: David T. Allen, Josue Marrero
  • Patent number: 8937422
    Abstract: 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: Grant
    Filed: October 22, 2010
    Date of Patent: January 20, 2015
    Assignees: Hitachi Industrial Equipment Systems Co., Ltd., Hitachi Appliances, Inc.
    Inventors: Yuji Enomoto, Zhuonan Wang, Ryoso Masaki, Hiromitsu Itabashi
  • Patent number: 8736135
    Abstract: Teeth are arranged annularly around a rotation axis. The yoke has through holes. The through holes open in a radial direction around the rotation axis and in an axial direction along the rotation axis. The teeth are inserted through the through holes. A metal plate is arranged to face the yoke in the axial direction. A reinforcing plate is fixed to the teeth.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: May 27, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshinari Asano, Nobuyuki Kifuji, Tomonori Kikuno, Shin Nakamasu, Ryuuji Yasumoto
  • Patent number: 8680736
    Abstract: 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: Grant
    Filed: November 10, 2009
    Date of Patent: March 25, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Zhuonan Wang, Yuji Enomoto, Shigeki Morinaga, Ryoso Masaki, Shigeho Tanigawa, Hiromitsu Itabashi, Motoya Ito
  • Publication number: 20140015356
    Abstract: An electric machine having a segmented core wherein the core includes a plurality of core segments. The segments are secured together with a belt member that substantially encircles the core segments but does not extend the full axial length of the segments. In some embodiments, the individual segments include a recess on their outer radial surface in which the belt member is positioned. A method of assembling an electric machine having a segmented core is also disclosed. Coils are wound about the poles of a plurality of segments. After forming the coils on the segments, the segments are joined together with a belt member wherein the belt member does not extend the full axial length of the core segments and is positioned between the two axial ends of the core assembly.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 16, 2014
    Inventor: Bradley D. Chamberlin
  • Patent number: 8373326
    Abstract: 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: Grant
    Filed: October 22, 2010
    Date of Patent: February 12, 2013
    Assignees: Hitachi Metals, Ltd., Hitachi Appliances, Inc.
    Inventors: Yuji Enomoto, Zhuonan Wang, Ryoso Masaki, Hiromitsu Itabashi, Kazumasa Ide
  • Patent number: 8125116
    Abstract: An alternator for vehicle includes a stator that outputs an AC voltage and a rotor that includes a field coil and a rotor core. The stator includes a plurality of phase stators that are disposed side-by-side along the rotational axis and individually output AC voltages. The phase stators include an even number of stator tabs alternately extending from one outer side of a phase stator coil toward another outer side of the phase stator coil and extending from the other outer side toward the one outer side along the rotational axis. The rotor includes a field coil and a rotor core at which an even number of rotor tabs are formed along the circumferential direction so as to alternately extend from one outer side of the field coil toward another outer side of the field coil along the rotational axis and extend from the other outer side toward the one outer side along the rotational axis. A phase stator core at each phase stator is formed by laminating a plurality of magnetic sheets.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: February 28, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Toshio Ishikawa, Minoru Yabuki, Yoshihisa Ishikawa, Yuji Enomoto
  • Publication number: 20110316381
    Abstract: Teeth are arranged annularly around a rotation axis. The yoke has through holes. The through holes open in a radial direction around the rotation axis and in an axial direction along the rotation axis. The teeth are inserted through the through holes. A metal plate is arranged to face the yoke in the axial direction. A reinforcing plate is fixed to the teeth.
    Type: Application
    Filed: February 24, 2010
    Publication date: December 29, 2011
    Inventors: Yoshinari Asano, Nobuyuki Kifuji, Tomonori Kikuno, Shin Nakamasu, Ryuuji Yasumoto
  • Patent number: 8026649
    Abstract: Electric machine rotor comprising: an inner rotor element and an outer rotor element positioned more outwards in the radial direction than the inner rotor element, the inner rotor element and the outer rotor element being made of a material of high permeance, and an air gap of low permeance between the inner rotor element and the outer rotor element. The outer rotor element forms a shape-mating pair with the inner rotor element, the inner rotor element and the outer rotor element being shaped in such a way that radial detachment of the outer rotor element from the inner rotor element is prevented.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: September 27, 2011
    Assignee: ABB Oy
    Inventor: Jere Kolehmainen
  • Publication number: 20110095642
    Abstract: 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: Application
    Filed: October 22, 2010
    Publication date: April 28, 2011
    Inventors: Yuji ENOMOTO, Zhuonan Wang, Ryoso Masaki, Hiromitsu Itabashi
  • Patent number: 7919897
    Abstract: An axial gap type motor 10 includes: a rotor 11 having a rotor core 13, the rotor core 13 including: multiple main magnet pieces 41 respectively magnetized in a direction of the rotation axis O of the rotor, and multiple main magnet piece storing hole portions 15 respectively for holding associated main magnet pieces; and a pair of stators 12 to be mounted onto the rotor 11, wherein the rotor core 13 is structured by winding a tape-shaped magnetic plate 14, and includes a first winding layer and a second winding layer; and in portions of the first and second winding layers that are situated in the same phase from the center of rotation of the rotor core 13, the first winding layer includes an outside magnetic flux short preventive portions 62, and the second winding layer includes an outside connecting portions 61.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: April 5, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shigeru Tajima, Keiichi Yamamoto
  • Patent number: 7872392
    Abstract: A rotating electrical machine, especially a turbogenerator, includes a rotor and a stator, which concentrically surrounds the rotor and is terminated at each of the two axial ends by a laminated press plate (14), which is constructed from a stack of individual press plate laminates (30). The electrical properties are improved by providing the press plate laminates (30) at least partially with slits (26) for reducing the eddy current losses.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: January 18, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Johann Haldemann, Reinhard Joho