Patents by Inventor Junichi Nakazono

Junichi Nakazono 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).

  • Publication number: 20210108861
    Abstract: A heat storage unit includes: a heat storage material that contains water and high polymers that exhibit hydrophilicity or hydrophobicity depending on a temperature; a heat exchanger that causes heat exchange to be performed between a heating fluid and the heat storage material to heat the heat storage material and store heat in the heat storage material, and causes heat exchange to be performed between a heat utilization fluid and the heat storage material to receive heat from the heat storage material and cause heat to be transferred from the heat storage material; and a container that is filled with the heat storage material and houses the heat exchanger.
    Type: Application
    Filed: June 18, 2019
    Publication date: April 15, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yasumitsu NOMURA, Shigetoshi IPPOSHI, Shunkei SUZUKI, Junichi NAKAZONO, Hideharu NOBUTOKI
  • Publication number: 20200274411
    Abstract: A rotary electric machine including a rotor including a rotor core; permanent magnets to be embedded in the rotor core; and a one end-side end plate configured to support one end side of the rotor core. The rotor core has rotor refrigerant passages through which refrigerant for cooling the permanent magnets flows in an axial direction of the shaft. The one end-side end plate has an end plate refrigerant passage communicating with the rotor refrigerant passages. The end plate refrigerant passage has refrigerant reservoirs, each projecting to an outer side in a radial direction of the shaft.
    Type: Application
    Filed: February 28, 2018
    Publication date: August 27, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke KIMOTO, Junji KITAO, Tomohira TAKAHASHI, Yoshihiro MIYAMA, Junichi NAKAZONO
  • Patent number: 10756661
    Abstract: A field winding type rotating electric machine, whose power factor is cos ?, includes a stator, a rotor with a field winding, a rectifying element, a drive unit and a control unit. When performing rectangular-wave or overmodulation energization, the control unit generates a voltage pulse pair, which induces a current pulse pair, by: setting a reference time to the center of an ON duration or OFF duration of a control signal of a first phase; and providing a temporary ON duration and a temporary OFF duration after a predetermined angle from the reference time. The predetermined angle is within a predetermined range including cos?1 ? in electrical angle. The temporary ON duration is provided to temporarily turn ON a control signal of a second phase during an OFF duration thereof. The temporary OFF duration is provided to temporarily turn OFF a control signal of a third phase during an ON duration thereof.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 25, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masahiro Seguchi, Junichi Nakazono
  • Patent number: 10727773
    Abstract: A field winding type rotating electric machine includes: a stator armature winding wound on a stator core; a rotor field winding wound on a rotor core; a rectifying element connected to both ends of the rotor field winding; a capacitor having one end connected to one end of the rectifying element and the other end connected between the two ends of the rotor field winding; and a control circuit configured to supply electric current, which includes a fundamental component for generating rotational torque and a harmonic component having a shorter period than the fundamental component and superimposed on the fundamental component, to the stator armature winding and thereby induce excitation current in the rotor field winding. Moreover, an inductance of the rotor field winding and a capacitance of the capacitor are in a resonant relationship with a frequency of the harmonic component.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: July 28, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masahiro Seguchi, Junichi Nakazono
  • Publication number: 20200049424
    Abstract: A regenerative heat exchange apparatus includes a heat storage tank, a heat storage material disposed inside the heat storage tank and having a heat storage capability and a heat rejection capability, a liquid passage covered by the heat storage material inside the heat storage tank, the liquid passage having a first straight pipe portion through which a liquid flows horizontally, a heat medium passage covered by the heat storage material inside the heat storage tank, the heat medium passage being adjacent to and in a set with the liquid passage, the heat medium passage having a second straight pipe portion through which a heat medium flows horizontally, the heat medium being at a temperature higher than the liquid. The first straight pipe portion is located vertically lower than the second straight pipe portion.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 13, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shunkei SUZUKI, Shigetoshi IPPOSHI, Yoshikazu YAJI, Yasumitsu NOMURA, Junichi NAKAZONO, Shinya TOKIZAKI
  • Publication number: 20200041218
    Abstract: A plate heat exchanger causes heat exchange to be performed using a plurality of heat transfer plates stacked. Each of the heat transfer plates includes a plate body, a first-medium inlet, a first-medium outlet, a second-medium inlet, a second-medium outlet, and a projection that provides a passage. At least one of the first-medium inlet and the first-medium outlet is located at one of two corners at one end of the plate body which the projection contacts. At least one of the second-medium inlet and the second-medium outlet is located at one of two corners at the other end of the plate body from which the projection is separated.
    Type: Application
    Filed: December 13, 2017
    Publication date: February 6, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Junichi NAKAZONO, Shigetoshi IPPOSHI, Masaru SHINOZAKI, Yugo ASAI, Yusuke KIMOTO, Yoshihiro MIYAMA, Yuichi USUDA, Yoshitaka EIJIMA, Seiji MARUYAMA
  • Publication number: 20190312539
    Abstract: A field winding type rotating electric machine includes: a stator armature winding wound on a stator core; a rotor field winding wound on a rotor core; a rectifying element connected to both ends of the rotor field winding; a capacitor having one end connected to one end of the rectifying element and the other end connected between the two ends of the rotor field winding; and a control circuit configured to supply electric current, which includes a fundamental component for generating rotational torque and a harmonic component having a shorter period than the fundamental component and superimposed on the fundamental component, to the stator armature winding and thereby induce excitation current in the rotor field winding. Moreover, an inductance of the rotor field winding and a capacitance of the capacitor are in a resonant relationship with a frequency of the harmonic component.
    Type: Application
    Filed: June 21, 2019
    Publication date: October 10, 2019
    Applicant: DENSO CORPORATION
    Inventors: Masahiro SEGUCHI, Junichi NAKAZONO
  • Publication number: 20190296672
    Abstract: A field winding type rotating electric machine, whose power factor is cos ?, includes a stator, a rotor with a field winding, a rectifying element, a drive unit and a control unit. When performing rectangular-wave or overmodulation energization, the control unit generates a voltage pulse pair, which induces a current pulse pair, by: setting a reference time to the center of an ON duration or OFF duration of a control signal of a first phase; and providing a temporary ON duration and a temporary OFF duration after a predetermined angle from the reference time. The predetermined angle is within a predetermined range including cos?1 ? in electrical angle. The temporary ON duration is provided to temporarily turn ON a control signal of a second phase during an OFF duration thereof. The temporary OFF duration is provided to temporarily turn OFF a control signal of a third phase during an ON duration thereof.
    Type: Application
    Filed: June 13, 2019
    Publication date: September 26, 2019
    Applicant: DENSO CORPORATION
    Inventors: Masahiro SEGUCHI, Junichi NAKAZONO
  • Patent number: 9583987
    Abstract: A stator includes a hollow cylindrical stator core having stator teeth and slots. The stator teeth each extend radially inward and are circumferentially spaced from one another. Each of the slots is formed between one circumferentially-facing pair of the stator teeth and opens at the radially inner periphery of the stator core. Each of the stator teeth has a distal end portion that includes a slit, a base part and an oblique part. The slit is formed in a distal end surface of the stator tooth and extends axially. The base part and the oblique part are formed respectively on opposite circumferential sides of the slit. The base part extends radially inward to have a distal end surface that makes up an inner-diameter surface of the stator core. The oblique part is bent toward an adjacent slot so as to extend obliquely with respect to the base part.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: February 28, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Ikuta, Junichi Nakazono, Kuniharu Teshima, Yuusuke Hara
  • Patent number: 9570947
    Abstract: The electric rotating machine includes a stator having an inner hole, a rotor disposed in the inner hole of the stator with a gap with an inner periphery of the stator and formed with magnet housing holes each housing a permanent magnet as a magnetic pole embedded in the outer periphery of the rotor, and a shaft pressure-inserted into a center hole of the rotor. The rotor includes, for each adjacent two of the magnet housing holes, a beam portion formed radially outside the magnet housing holes, a projecting portion projecting radially inward to define the center hole, an extension portion formed radially outside the projecting portion and radially outside the magnet holes, and a plate-shaped bridge portion connecting the beam portion and the extension portion.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: February 14, 2017
    Assignee: DENSO CORPORATION
    Inventor: Junichi Nakazono
  • Patent number: 9531225
    Abstract: The electric rotating machine includes a stator having an inner hole, a rotor disposed in the inner hole of the stator with a gap with an inner periphery of the stator and formed with magnet housing holes each housing a permanent magnet as a magnetic pole embedded in the outer periphery of the rotor, and a shaft pressure-inserted into a center hole of the rotor. The rotor includes, for each adjacent two of the magnet housing holes, a beam portion formed radially outside the magnet housing holes, a projecting portion projecting radially inward to define the center hole, an extension portion formed radially outside the projecting portion and radially outside the magnet holes, and a plate-shaped bridge portion connecting the beam portion and the extension portion.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: December 27, 2016
    Assignee: DENSO CORPORATION
    Inventor: Junichi Nakazono
  • Patent number: 9343937
    Abstract: In a rotary electric machine having a rotor core of a skew structure, when one of the core blocks is sequentially stacked on the other of the core blocks to form a step skew, a communication reference groove is formed along an axial direction of the rotor core by aligning a side section of a short protruding section in one core block with a side section of the long protruding sections in the other core block, and by aligning a side section of a long protruding section in one core block with a side section of a short protruding section in the other core block. The core blocks are correctly stacked by aligning the side section of the long protruding sections with the side section of the short protruding sections.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: May 17, 2016
    Assignee: DENSO CORPORATION
    Inventors: Junichi Nakazono, Kiyokazu Futami, Seiji Tachibana
  • Patent number: 9124156
    Abstract: The rotor for an electric rotating machine includes a rotor core fixed to a rotating shaft and formed with at least one magnet accommodating hole, a magnet accommodated in the magnet accommodating hole, a resin portion filled in the magnet accommodating hole accommodating the magnet, a first end plate fixed to the rotating shaft at one axial side of the rotor core, and a second end plate fixed to the rotating shaft at the other axial side of the rotor core. The axial fixing force of the second end plate against the rotating shaft is smaller than that of the first end plate. At least a part of the resin portion is present in an axial area between the magnet accommodated in the magnet accommodating hole and the first end plate, and the magnet is in direct contact with the second end plate.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: September 1, 2015
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Ikuta, Atsuo Ishizuka, Junichi Nakazono
  • Publication number: 20140084729
    Abstract: The electric rotating machine includes a stator having an inner hole, a rotor disposed in the inner hole of the stator with a gap with an inner periphery of the stator and formed with magnet housing holes each housing a permanent magnet as a magnetic pole embedded in the outer periphery of the rotor, and a shaft pressure-inserted into a center hole of the rotor. The rotor includes, for each adjacent two of the magnet housing holes, a beam portion formed radially outside the magnet housing holes, a projecting portion projecting radially inward to define the center hole, an extension portion formed radially outside the projecting portion and radially outside the magnet holes, and a plate-shaped bridge portion connecting the beam portion and the extension portion.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 27, 2014
    Applicant: DENSO CORPORATION
    Inventor: Junichi NAKAZONO
  • Publication number: 20140084744
    Abstract: In a rotary electric machine having a rotor core of a skew structure, when one of the core blocks is sequentially stacked on the other of the core blocks to form a step skew, a communication reference groove is formed along an axial direction of the rotor core by aligning a side section of a short protruding section in one core block with a side section of the long protruding sections in the other core block, and by aligning a side section of a long protruding section in one core block with a side section of a short protruding section in the other core block. The core blocks are correctly stacked by aligning the side section of the long protruding sections with the side section of the short protruding sections.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 27, 2014
    Applicant: DENSO CORPORATION
    Inventors: Junichi NAKAZONO, Kiyokazu FUTAMI, Seiji TACHIBANA
  • Publication number: 20130334907
    Abstract: The rotor for an electric rotating machine includes a rotor core fixed to a rotating shaft and formed with at least one magnet accommodating hole, a magnet accommodated in the magnet accommodating hole, a resin portion filled in the magnet accommodating hole accommodating the magnet, a first end plate fixed to the rotating shaft at one axial side of the rotor core, and a second end plate fixed to the rotating shaft at the other axial side of the rotor core. The axial fixing force of the second end plate against the rotating shaft is smaller than that of the first end plate. At least a part of the resin portion is present in an axial area between the magnet accommodated in the magnet accommodating hole and the first end plate, and the magnet is in direct contact with the second end plate.
    Type: Application
    Filed: June 4, 2013
    Publication date: December 19, 2013
    Inventors: Hiroyuki IKUTA, Atsuo ISHIZUKA, Junichi NAKAZONO
  • Publication number: 20120181893
    Abstract: A stator includes a hollow cylindrical stator core having stator teeth and slots. The stator teeth each extend radially inward and are circumferentially spaced from one another. Each of the slots is formed between one circumferentially-facing pair of the stator teeth and opens at the radially inner periphery of the stator core. Each of the stator teeth has a distal end portion that includes a slit, a base part and an oblique part. The slit is formed in a distal end surface of the stator tooth and extends axially. The base part and the oblique part are formed respectively on opposite circumferential sides of the slit. The base part extends radially inward to have a distal end surface that makes up an inner-diameter surface of the stator core. The oblique part is bent toward an adjacent slot so as to extend obliquely with respect to the base part.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 19, 2012
    Applicant: DENSO CORPORATION
    Inventors: Hiroyuki IKUTA, Junichi NAKAZONO, Kuniharu TESHIMA, Yuusuke HARA
  • Publication number: 20110052872
    Abstract: A method of producing a porous sheet, which comprises the steps consisting of preparing a dispersion having ultra-high-molecular-weight polyethylene particles dispersed in a solvent, applying the dispersion onto a film to form a coating layer thereon, sintering the coating layer, and removing the solvent contained in the coating layer.
    Type: Application
    Filed: November 9, 2010
    Publication date: March 3, 2011
    Inventors: Hiroyuki Iida, Satoshi Sakuma, Youji Uchida, Junichi Nakazono, Ryouichi Matsushima
  • Publication number: 20100183865
    Abstract: The present invention provides a sheet roll of a porous polytetrafluoroethylene membrane in which during production a winding-up operation is easy and a cutting operation also is easy, as well as a tape roll of a porous polytetrafluoroethylene membrane that is difficult to lose its shape. The present invention provides a sheet roll comprising a laminate of a porous polytetrafluoroethylene membrane and a support, wherein the laminate is wound up, as well as a tape roll comprising a laminate of a porous polytetrafluoroethylene membrane and a support, wherein the laminate is wound up. The latter tape roll can be obtained by cutting the former sheet roll.
    Type: Application
    Filed: June 20, 2008
    Publication date: July 22, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Tomoyoshi Nagayama, Youji Uchida, Junichi Nakazono
  • Publication number: 20070202298
    Abstract: A method of producing a porous sheet, which comprises the steps consisting of preparing a dispersion having ultra-high-molecular-weight polyethylene particles dispersed in a solvent, applying the dispersion onto a film to form a coating layer thereon, sintering the coating layer, and removing the solvent contained in the coating layer.
    Type: Application
    Filed: February 26, 2007
    Publication date: August 30, 2007
    Inventors: Hiroyuki Iida, Satoshi Sakuma, Youji Uchida, Junichi Nakazono, Ryouichi Matsushima