Patents by Inventor Nobuyuki Ikeya

Nobuyuki Ikeya 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).

  • Patent number: 11248612
    Abstract: A centrifugal compressor includes a motor that rotates a rotary shaft of a compressor impeller, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, an gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a cooling gas line which is connected to the gas bleed port and through which a part of compressed gas compressed by the compressor impeller passes, a cooling liquid line of which at least a part is provided in the motor housing and through which cooling liquid of which the temperature is lower than the temperature of the compressed gas passes, and a heat exchanger that is disposed on the cooling gas line and the cooling liquid line.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: February 15, 2022
    Inventors: Koji Sakota, Nobuyuki Ikeya, Hideumi Ohkuma, Naomi Sawachika
  • Publication number: 20220006366
    Abstract: An inverter integrated gas supply device includes a fluid machine configured to discharge air, an electric motor having a motor casing and configured to drive the fluid machine, an inverter having an inverter casing and configured to supply a drive current to the electric motor, a motor-side connection part attached to the motor casing and configured to receive the drive current, and an inverter-side connection part attached to the inverter casing, connected to the motor-side connection part. The motor-side connection part includes a motor-side connector housing, and a motor connector. The inverter-side connection part includes an inverter-side connector housing, and an inverter connector. A position of the motor connector relative to the motor-side connector housing is fixed; and a position of the inverter connector relative to the inverter-side connector housing is variable.
    Type: Application
    Filed: September 22, 2021
    Publication date: January 6, 2022
    Inventors: Nobuyuki IKEYA, Yuji SASAKI, Masaya TANIGUCHI, Gen KUWATA, Satoru OHASHI
  • Publication number: 20220006355
    Abstract: An inverter integrated gas supply device includes an electric motor and an inverter. The electric motor has a motor-side connection part that is configured to receive a drive current. The inverter has an inverter-side connection part that is connected to the motor-side connection part, and configured to supply the drive current to the motor-side connection part. The motor-side connection part includes a motor-side connector housing fixed to a motor case, a motor connector that is configured to receive the drive current, and a sealing member configured to seal a gap between the motor-side connector housing and the motor connector.
    Type: Application
    Filed: September 22, 2021
    Publication date: January 6, 2022
    Inventors: Nobuyuki IKEYA, Yuji SASAKI, Masaya TANIGUCHI, Gen KUWATA, Satoru OHASHI
  • Patent number: 11177489
    Abstract: A centrifugal compressor includes a rotation shaft, a compressor impeller attached to one end of the rotation shaft, and a first wall surface and a second wall surface formed inside a housing so as to face each other in an axial direction. A diffuser is formed between the first wall surface and the second wall surface in the axial direction, and a wall portion separates the diffuser from an axial space inside the housing in which the rotation shaft extends. The wall portion includes at least one extraction hole that fluidly couples the diffuser to the axial spate and that is configured to extract a gas from the diffuser.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: November 16, 2021
    Inventors: Koji Sakota, Nobuyuki Ikeya, Kaoru Kaneko, Naomi Sawachika
  • Patent number: 10927759
    Abstract: Provided is a bearing structure for a turbocharger including a turbine and a compressor provided at both ends of a rotation shaft and supporting the rotation shaft to a housing, including: a first radial bearing of an oil lubrication type provided on the side of the turbine of the rotation shaft; a second radial bearing corresponding to an air bearing provided on the side of the compressor of the rotation shaft; a gas seal portion provided in the periphery of the rotation shaft between the first radial bearing and the turbine; and a thrust bearing corresponding to an air bearing provided on the side of the compressor of the rotation shaft.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: February 23, 2021
    Assignee: IHI Corporation
    Inventor: Nobuyuki Ikeya
  • Publication number: 20200378276
    Abstract: A turbine includes a rotary shaft; a turbine impeller attached to the rotary shaft; a housing including a turbine housing that accommodates the turbine impeller; and a bearing that rotatably supports the rotary shaft. The turbine housing includes a first discharge path configured to discharge gas in a space, in which the bearing is provided, to an exhaust gas outlet port in the turbine housing. A bottom surface of the first discharge path is constituted of an inclined portion descending from a first inlet opening toward a first outlet opening, or is constituted of the inclined portion and a horizontal portion that continuously extends horizontally from the inclined portion.
    Type: Application
    Filed: August 17, 2020
    Publication date: December 3, 2020
    Inventor: Nobuyuki IKEYA
  • Publication number: 20200259193
    Abstract: A centrifugal compressor includes a rotation shaft, a compressor impeller attached to one end of the rotation shaft, and a first wall surface and a second wall surface formed inside a housing so as to face each other in an axial direction. A diffuser is formed between the first wall surface and the second wall surface in the axial direction, and a wall portion separates the diffuser from an axial space inside the housing in which the rotation shaft extends. The wall portion includes at least one extraction hole that fluidly couples the diffuser to the axial spate and that is configured to extract a gas from the diffuser.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Inventors: Koji SAKOTA, Nobuyuki IKEYA, Kaoru KANEKO, Naomi SAWACHIKA
  • Publication number: 20200256344
    Abstract: A centrifugal compressor includes a motor that rotates a rotary shaft of a compressor impeller, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, an gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a cooling gas line which is connected to the gas bleed port and through which a part of compressed gas compressed by the compressor impeller passes, a cooling liquid line of which at least a part is provided in the motor housing and through which cooling liquid of which the temperature is lower than the temperature of the compressed gas passes, and a heat exchanger that is disposed on the cooling gas line and the cooling liquid line.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Inventors: Koji SAKOTA, Nobuyuki IKEYA, Hideumi OHKUMA, Naomi SAWACHIKA
  • Publication number: 20200256343
    Abstract: A centrifugal compressor includes a rotary shaft of a compressor impeller, a gas bearing structure that supports the rotary shaft, a motor that rotates the rotary shaft, a motor housing that houses the motor, a compressor housing that houses the compressor impeller and includes an intake port and a discharge port, a gas bleed port that is provided closer to the discharge port than the compressor impeller in a flow direction in the compressor housing, a bearing cooling line that connects the gas bleed port to the gas bearing structure, and a heat exchanger that is disposed on the bearing cooling line. The heat exchanger is mounted on at least one of the motor housing and the compressor housing.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Inventors: Koji SAKOTA, Nobuyuki IKEYA, Kaoru KANEKO
  • Patent number: 10662965
    Abstract: A sealing structure includes: an insertion hole formed in a sealing plate; a sealing ring provided in the insertion hole; a first rotating body provided to the shaft, at least a part of the first rotating body positioned inside the insertion hole; a second rotating body disposed at a position apart from the compressor impeller than the first rotating body and having a maximum outer diameter larger than a minimum inner diameter of the insertion hole; and an annular receiving groove formed by the first rotating body and the second rotating body and receiving an inner circumferential surface side of the sealing ring.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 26, 2020
    Assignee: IHI Corporation
    Inventors: Yoshiaki Hirai, Nobuyuki Ikeya, Kouta Kimachi
  • Publication number: 20190085768
    Abstract: Provided is a bearing structure for a turbocharger including a turbine and a compressor provided at both ends of a rotation shaft and supporting the rotation shaft to a housing, including: a first radial bearing of an oil lubrication type provided on the side of the turbine of the rotation shaft; a second radial bearing corresponding to an air bearing provided on the side of the compressor of the rotation shaft; a gas seal portion provided in the periphery of the rotation shaft between the first radial bearing and the turbine; and a thrust bearing corresponding to an air bearing provided on the side of the compressor of the rotation shaft.
    Type: Application
    Filed: April 24, 2017
    Publication date: March 21, 2019
    Applicant: IHI Corporation
    Inventor: Nobuyuki IKEYA
  • Patent number: 10233828
    Abstract: A base portion of the support ring includes as many joining areas as connection pins. The joining areas respectively surround pin holes through which to insert end portions of the connection pins, and are arranged in a circumferential direction of the support ring. Cuts are formed around each joining area of the support ring in order to allow deformation of an intermediate portion of the support ring relative to the joining area.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: March 19, 2019
    Assignees: IHI Corporation, IHI Charging Systems International GmbH
    Inventors: Kenichi Segawa, Nobuyuki Ikeya, Tobias Scheuermann, Thorben Kotzbacher
  • Publication number: 20180106265
    Abstract: A sealing structure includes: an insertion hole formed in a sealing plate; a sealing ring provided in the insertion hole; a first rotating body provided to the shaft, at least a part of the first rotating body positioned inside the insertion hole; a second rotating body disposed at a position apart from the compressor impeller than the first rotating body and having a maximum outer diameter larger than a minimum inner diameter of the insertion hole; and an annular receiving groove formed by the first rotating body and the second rotating body and receiving an inner circumferential surface side of the sealing ring.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Applicant: IHI Corporation
    Inventors: Yoshiaki HIRAI, Nobuyuki IKEYA, Kouta KlMACHI
  • Publication number: 20160281593
    Abstract: A base portion of the support ring includes as many joining areas as connection pins. The joining areas respectively surround pin holes through which to insert end portions of the connection pins, and are arranged in a circumferential direction of the support ring. Cuts are formed around each joining area of the support ring in order to allow deformation of an intermediate portion of the support ring relative to the joining area.
    Type: Application
    Filed: June 6, 2016
    Publication date: September 29, 2016
    Applicants: IHI Corporation, IHI CHARGING SYSTEMS INTERNATIONAL GMBH
    Inventors: Kenichi SEGAWA, Nobuyuki IKEYA, Tobias SCHEUERMANN, Thorben KOTZBACHER
  • Patent number: 8535022
    Abstract: A bearing device includes a turbine-side bearing 21 and a compressor-side bearing 22 each of which is a floating-bush type sliding bearing. A gap (turbine-side inner peripheral clearance TI) between the turbine-side bearing 21 and a rotating shaft 13 is set to be larger than a gap (compressor-side inner peripheral clearance CI) between the compressor-side bearing 22 and the rotating shaft 13. In the bearing structure, unstable vibration including self-excited vibration can be suppressed.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: September 17, 2013
    Assignee: IHI Corporation
    Inventors: Nobuo Takei, Atsushi Mori, Takahiro Kobayashi, Nobuyuki Ikeya
  • Publication number: 20100232959
    Abstract: A bearing device includes a turbine-side bearing 21 and a compressor-side bearing 22 each of which is a floating-bush type sliding bearing. A gap (turbine-side inner peripheral clearance TI) between the turbine-side bearing 21 and a rotating shaft 13 is set to be larger than a gap (compressor-side inner peripheral clearance CI) between the compressor-side bearing22 and the rotating shaft 13. In the bearing structure, unstable vibration including self-excited vibration can be suppressed.
    Type: Application
    Filed: June 21, 2006
    Publication date: September 16, 2010
    Inventors: Nobuo Takei, Atsushi Mori, Takahiro Kobayashi, Nobuyuki Ikeya
  • Patent number: 4756673
    Abstract: In a turbocharger of the type in which a turbine and a compressor are disposed in back-to-back relationship and bearings are disposed on the suction side of the compressor, the turbine and the compressor are isolated thermally from each other; the service life of the antifriction bearings is increased; lubrication oil sealability is improved; and machining of a shaft is facilitated.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: July 12, 1988
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Kazuya Miyashita, Nobuyuki Ikeya, Toshihiko Kitazawa
  • Patent number: 4721441
    Abstract: A bearing device for a turbocharger wherein a bearing casing is interposed between a turbine casing and a compressor casing; disposed within a bearing housing of the bearing casing are a ball bearing on the side of the turbine and a ball bearing on the side of the compressor both of which is supported by a one-piece oil film damper which is floating; and a pin is loosely fitted into the oil film damper and the bearing housing so as to prevent the rotation of the oil film damper.
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: January 26, 1988
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Kazuya Miyashita, Nobuyuki Ikeya