Patents by Inventor Toshinari Kondou
Toshinari Kondou 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: 11201529Abstract: A stator core including field slots housing field windings and armature slots housing armature windings is provided. Permanent magnets are housed in the respective armature slots. Field windings face to the permanent magnets directly or via the stator core on the outer and inner circumferential sides. A coil end of one of the armature windings straddles the predetermined one of the field slots and passes over the axial end face of each of the permanent magnets in the corresponding one of the field slots over which the coil end straddles.Type: GrantFiled: December 20, 2017Date of Patent: December 14, 2021Assignees: DAIKIN INDUSTRIES, LTD., NAGOYA INSTITUTE OF TECHNOLOGYInventors: Yoshinari Asano, Toshinari Kondou, Yoshihito Sanga, Yoshifumi Maeda, Takashi Kosaka
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Patent number: 10693334Abstract: A stator core including field slots housing field windings and armature slots housing armature windings is provided. Permanent magnets are housed in the respective armature slots. The armature windings are configured by a first winding and at least one second winding. The field winding passes over the permanent magnet. The second windings each have a part embedded between a coil end of the field winding and teeth around which the field winding is around.Type: GrantFiled: April 12, 2018Date of Patent: June 23, 2020Assignees: DAIKIN INDUSTRIES, LTD., NAGOYA INSTITUTE OF TECHNOLOGYInventors: Yoshinari Asano, Toshinari Kondou, Yoshihito Sanga, Takashi Kosaka
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Publication number: 20200119630Abstract: A stator core including field slots housing field windings and armature slots housing armature windings is provided. Permanent magnets are housed in the respective armature slots. Field windings face to the permanent magnets directly or via the stator core on the outer and inner circumferential sides. A coil end of one of the armature windings straddles the predetermined one of the field slots and passes over the axial end face of each of the permanent magnets in the corresponding one of the field slots over which the coil end straddles.Type: ApplicationFiled: December 20, 2017Publication date: April 16, 2020Applicants: Daikin Industries, Ltd., Nagoya Institute of TechnologyInventors: Yoshinari ASANO, Toshinari KONDOU, Yoshihito SANGA, Yoshifumi MAEDA, Takashi KOSAKA
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Publication number: 20200036251Abstract: A stator core including field slots housing field windings and armature slots housing armature windings is provided. Permanent magnets are housed in the respective armature slots. The armature windings are configured by a first winding and at least one second winding. The field winding passes over the permanent magnet. The second windings each have a part embedded between a coil end of the field winding and teeth around which the field winding is around.Type: ApplicationFiled: April 12, 2018Publication date: January 30, 2020Applicants: DAIKIN INDUSTRIES, LTD., NAGOYA INSTITUTE OF TECHNOLOGYInventors: Yoshinari ASANO, Toshinari KONDOU, Yoshihito SANGA, Takashi KOSAKA
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Patent number: 9800106Abstract: Satisfactory magnet torque is achieved while avoiding a reduction in the reluctance torque generated. The rotor core is provided with a plurality of magnet slots arranged in the circumferential direction of the rotor core and a gap formed of base holes and a projecting hole. The base holes extend from both ends in the circumferential direction of each magnet slot to the outer side of the rotor core. The projecting hole projects in the circumferential direction of the rotor core from at least one of peripheral portions, opposed to each other, of the base holes provided at both of the ends of the magnet slot, when viewed in an axial direction. The projecting hole is located closer to the magnet slot than to an outer peripheral side end of the base hole.Type: GrantFiled: March 4, 2015Date of Patent: October 24, 2017Assignees: DAIKIN INDUSTRIES, LTD., OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Toshinari Kondou, Masayuki Sanada, Shigeo Morimoto, Yukinori Inoue
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Patent number: 9712006Abstract: A first rotor core including a plurality of gaps penetrating through the first rotor core along an axial direction is provided. A second rotor core being in contact with an axial end of the first rotor core and having a plurality of magnet-housing slots facing the gaps is also provided. The gaps have a magnetic resistance lower than that of the magnet-housing slots.Type: GrantFiled: March 21, 2012Date of Patent: July 18, 2017Assignee: Daikin Industries, Ltd.Inventors: Toshinari Kondou, Yoshiki Yasuda, Akio Yamagiwa
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Publication number: 20170063185Abstract: Satisfactory magnet torque is achieved while avoiding a reduction in the reluctance torque generated. The rotor core is provided with a plurality of magnet slots arranged in the circumferential direction of the rotor core and a gap formed of base holes and a projecting hole. The base holes extend from both ends in the circumferential direction of each magnet slot to the outer side of the rotor core. The projecting hole projects in the circumferential direction of the rotor core from at least one of peripheral portions, opposed to each other, of the base holes provided at both of the ends of the magnet slot, when viewed in an axial direction. The projecting hole is located closer to the magnet slot than to an outer peripheral side end of the base hole.Type: ApplicationFiled: March 4, 2015Publication date: March 2, 2017Applicants: DAIKIN INDUSTRIES, LTD., OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Toshinari KONDOU, Masayuki SANADA, Shigeo MORIMOTO, Yukinori INOUE
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Patent number: 9438090Abstract: 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.Type: GrantFiled: January 23, 2015Date of Patent: September 6, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Toshinari Kondou, Yoshiki Yasuda, Akio Yamagiwa
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Publication number: 20150135519Abstract: 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.Type: ApplicationFiled: January 23, 2015Publication date: May 21, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Toshinari KONDOU, Yoshiki YASUDA, Akio YAMAGIWA
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Patent number: 9013136Abstract: A three-phase AC motor (4) has a configuration in which a q-axis inductance is larger than a d-axis inductance by a predetermined amount or more to allow smoothing of power fluctuations due to the power supply voltage of the AC power source (3).Type: GrantFiled: September 29, 2010Date of Patent: April 21, 2015Assignee: Daikin Industries, Ltd.Inventors: Akio Yamagiwa, Toshinari Kondou, Yoshihito Sanga
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Publication number: 20140021820Abstract: A first rotor core including a plurality of gaps penetrating through the first rotor core along an axial direction is provided. A second rotor core being in contact with an axial end of the first rotor core and having a plurality of magnet-housing slots facing the gaps is also provided. The gaps have a magnetic resistance lower than that of the magnet-housing slots.Type: ApplicationFiled: March 21, 2012Publication date: January 23, 2014Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Toshinari Kondou, Yoshiki Yasuda, Akio Yamagiwa
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Publication number: 20130026874Abstract: 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.Type: ApplicationFiled: March 28, 2011Publication date: January 31, 2013Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Toshinari Kondou, Yoshiki Yasuda, Akio Yamagiwa
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Publication number: 20120187877Abstract: A three-phase AC motor (4) has a configuration in which a q-axis inductance is larger than a d-axis inductance by a predetermined amount or more to allow smoothing of power fluctuations due to the power supply voltage of the AC power source (3).Type: ApplicationFiled: September 29, 2010Publication date: July 26, 2012Inventors: Akio Yamagiwa, Toshinari Kondou, Toshihito Sanga
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Patent number: 7973443Abstract: A magnetic field element includes magnetic field portions and a coupling portion and is rotatable on a rotation axis along a given direction. Each magnetic field portion includes a magnet and magnetic plates. The magnet includes first and second pole faces having different polarities from each other in the given direction. The magnetic-material plates are provided on the first and second pole faces. The magnetic field portions are annularly arranged along a circumferential direction around the rotation axis and spaced in the circumferential direction from one another. The coupling portion is made of a non-magnetic material and couples the magnetic field portions to one another.Type: GrantFiled: May 24, 2007Date of Patent: July 5, 2011Assignee: Daikin Industries, Ltd.Inventors: Shin Nakamasu, Toshinari Kondou, Yoshinari Asano
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Publication number: 20100225195Abstract: An object is to enable simple manufacture of a motor, especially, a stator core or a field without impairment of motor characteristics. The motor includes a shaft, a rotor fixed to the shaft, and a stator including a stator core that faces the rotor with a certain space therebetween and coils that are attached to the stator core. The stator includes a back yoke, and the stator core having a plurality of teeth that are circumferentially placed in an axial end face of the back yoke so as to stand upright axially of the back yoke, and that are formed of a dust core made of pressed magnetic powder. The above-mentioned teeth are buried axially to a certain depth in the back yoke.Type: ApplicationFiled: March 23, 2007Publication date: September 9, 2010Inventors: Yoshinari Asano, Shin Nakamasu, Toshinari Kondou
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Publication number: 20090273252Abstract: A magnetic field element includes magnetic field portions and a coupling portion and is rotatable on a rotation axis along a given direction. Each magnetic field portion includes a magnet and magnetic plates. The magnet includes first and second pole faces having different polarities from each other in the given direction. The magnetic-material plates are provided on the first and second pole faces. The magnetic field portions are annularly arranged along a circumferential direction around the rotation axis and spaced in the circumferential direction from one another. The coupling portion is made of a non-magnetic material and couples the magnetic field portions to one another.Type: ApplicationFiled: May 24, 2007Publication date: November 5, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shin Nakamasu, Toshinari Kondou, Yoshinari Asano