Patents Assigned to IHI Corporation
  • Publication number: 20250047093
    Abstract: A power generation device includes: a power generator, a power conversion circuit, a first interruption circuit, a second interruption circuit, a first monitoring circuit which monitors an output current from the power generator to the power conversion circuit and outputs a first interruption signal when an absolute value of the output current exceeds a first predetermined value, and a second monitoring circuit which monitors a total value of output voltages of respective phases of the power generator and outputs a second interruption signal when an absolute value of the total value exceeds a second predetermined value. The first interruption circuit interrupts a connection between the power generator and the power conversion circuit in accordance with the output of the first or second interruption signal. The second interruption circuit interrupts a connection between three-phase coils and the neutral point in accordance with the output of the first or second interruption signal.
    Type: Application
    Filed: October 9, 2024
    Publication date: February 6, 2025
    Applicants: IHI CORPORATION, THE RITSUMEIKAN TRUST
    Inventors: Toshikazu KOBAYASHI, Hirotaka SUGAWARA, Yoshitaka KAWABATA
  • Patent number: 12215705
    Abstract: A turbocharger includes: a shaft; a rolling bearing including an inner ring mounted on the shaft and an outer ring arranged around the inner ring; a housing including a bearing hole accommodating the rolling bearing; a compressor impeller provided on the shaft at an outside the bearing hole; and an annular bearing retainer plate arranged between the bearing hole and the compressor impeller in the central axis direction of the shaft and including an end face facing a side face of the outer ring, the end face including an annular circumferential oil groove continuously extending along the entire circumferential direction of the shaft and a protrusion located inside the circumferential oil groove in a radial direction of the shaft and protruding in a central axis direction of the shaft.
    Type: Grant
    Filed: August 4, 2023
    Date of Patent: February 4, 2025
    Assignee: IHI Corporation
    Inventors: Takahiro Tanaka, Akihiro Ueda, Hideyuki Kojima
  • Patent number: 12218627
    Abstract: A solar panel cleaning system includes a detection traveling vehicle configured to travel on a solar panel and detect dirt on the solar panel, a map generation part configured to generate a dirt map including a dirt position of the dirt on the solar panel, a cleaning path generation part configured to generate a cleaning path for performing cleaning of the solar panel, and a cleaning traveling vehicle configured to travel on the solar panel on the basis of the generated cleaning path and perform cleaning of the solar panel.
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: February 4, 2025
    Assignee: IHI Corporation
    Inventor: Kenji Nishimura
  • Publication number: 20250035127
    Abstract: Provided is a turbine including: a housing including: an accommodating space that accommodates a turbine impeller; a turbine scroll flow passage arranged on a radially outer side with respect to the turbine impeller; a communicating flow passage that allows communication between the turbine scroll flow passage and the accommodating space; and a discharge flow passage continuous with the accommodating space in a rotation axis direction of the turbine impeller; a vane member that includes a plurality of vane portions opposed to a first inner wall portion facing the communicating flow passage from a side opposite to the discharge flow passage, and is provided in the communicating flow passage; and an elastic member sandwiched by a second inner wall portion facing the communicating flow passage from the discharge flow passage side, and the vane member.
    Type: Application
    Filed: October 16, 2024
    Publication date: January 30, 2025
    Applicant: IHI CORPORATION
    Inventors: Kengo IKEDA, Takao ASAKAWA, Ryosuke MIYAO, Seiya NAKAZAWA
  • Publication number: 20250033959
    Abstract: Provided is a hydrogen production apparatus including: an accommodating tank; a heating unit placed in the accommodating tank; a first diffuser tube placed below the heating unit in the accommodating tank; a second diffuser tube placed below the first diffuser tube in the accommodating tank; a catalyst supply unit that supplies a catalyst containing any one or more of iron, nickel, copper, and aluminum from a supply port formed above the heating unit in the accommodating tank; a catalyst discharge unit that discharges the catalyst from a discharge port formed below the second diffuser tube in the accommodating tank; and a raw material gas supply unit that supplies a raw material gas containing at least hydrocarbon to the first diffuser tube and the second diffuser tube.
    Type: Application
    Filed: October 11, 2024
    Publication date: January 30, 2025
    Applicant: IHI Corporation
    Inventors: Takamasa ITO, Michinori NARISAWA, Takuto MIYAURA, Hironobu FUJIYOSHI
  • Patent number: 12209504
    Abstract: Provided is a turbine, including: an accommodating portion configured to accommodate a turbine impeller; an exhaust flow passage configured to allow communication between the accommodating portion and an exhaust-air introduction port; a discharge flow passage configured to allow communication between the accommodating portion and an exhaust-air discharge port; a bypass flow passage configured to allow communication between the exhaust flow passage and the discharge flow passage while detouring the accommodating portion; and a branching portion between the exhaust flow passage and the bypass flow passage. The branching portion has a flow passage sectional area of 0.6 times or more a flow passage sectional area of the exhaust-air introduction port.
    Type: Grant
    Filed: June 1, 2023
    Date of Patent: January 28, 2025
    Assignee: IHI Corporation
    Inventor: Takuro Kiriaki
  • Publication number: 20250018975
    Abstract: In a setting method of turning characteristics of an automated vehicle driving system, driving patterns for acquisition of a parameter of turning characteristics are generated automatically. Data concerning the turning characteristics of a vehicle is acquired through automated driving of the vehicle with the generated driving patterns. The parameter is set based on the acquired data.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Applicant: IHI Corporation
    Inventor: Satoru TAGAWA
  • Patent number: 12194565
    Abstract: Provided is a crack repair method of melting and eliminating a crack generated in a steel material, the method including holding a tab plate in surface contact with the steel material in which the crack is generated, thereafter continuously irradiating the tab plate to a first end portion of the crack in the steel material with a laser beam, and subsequently continuously irradiating the crack with the laser beam along the crack to a second end portion of the crack to melt and eliminate the crack. Consequently, when eliminating the crack generated in a constituent member of an existing structure or a constituent member such as a machine component, the crack can be eliminated without forming a through hole in the constituent member.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: January 14, 2025
    Assignee: IHI CORPORATION
    Inventors: Koutarou Inose, Naoyuki Matsumoto, Shota Nakanishi, Daiki Okita, Junko Yamada
  • Publication number: 20250012274
    Abstract: A fuel supply system includes a gear pump, and a minimum pressurizing check valve including a cylinder and a piston that partitions the internal space of the cylinder into a first chamber that communicates with the metering section and a second chamber that communicates with a system inlet, the piston is spring-biased in a direction toward the first chamber, a side wall of the cylinder is provided with an outflow port having an opening degree adjusted as the piston moves back and forth, the minimum pressurizing check valve keeps a differential pressure between the system inlet and the outlet of the metering section constant when the rotation speed of the gear pump is equal to or more than a lower threshold and is equal to or less than an intermediate threshold.
    Type: Application
    Filed: September 25, 2024
    Publication date: January 9, 2025
    Applicant: IHI CORPORATION
    Inventors: Hirotaka SUGAWARA, Naoki SEKI
  • Patent number: 12191717
    Abstract: A rotor of an electrical rotating device includes a rotor core, plural permanent magnets mounted on an outer circumference of the rotor core, a retaining sleeve that holds the permanent magnets from their outer side, a cooling fluid flow channel formed on each surface of the permanent magnets on a side of the retaining sleeve [or on each surface on a side of the rotor core], and a seal ring. The retaining sleeve is configured of plural divided sleeves divided along a direction of a rotation axis of the rotor. A seam is formed between adjacent divided sleeves in the plural divided sleeves. The seal ring covers the seam from an outer circumferential side [or an inner circumferential side].
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: January 7, 2025
    Assignee: IHI Corporation
    Inventors: Fuminori Suzuki, Naoki Seki
  • Patent number: 12188656
    Abstract: Provided is a correlation deriving method including the steps of: generating coal ash by incinerating coal; generating sintered ash by heating the coal ash at a predetermined heating temperature within a range of a combustion temperature of a coal burning boiler; measuring hardness of the sintered ash; measuring an exhaust gas temperature exhibited when coal which is to have the hardness is burnt in the coal burning boiler; and deriving a correlation between the hardness and the exhaust gas temperature.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: January 7, 2025
    Assignees: IHI Corporation, IHI INSPECTION AND INSTRUMENTATION CO., LTD.
    Inventors: Hirotaka Kawabe, Kenjiro Chie, Junichi Shigeta
  • Publication number: 20250003594
    Abstract: A combustion system includes: a combustor including a first combustion region and a second combustion region continuous with the first combustion region on a downstream side thereof; a first burner including an injection portion of ammonia as first fuel, the injection portion facing the first combustion region, and a first injection portion of second fuel not containing nitrogen atoms, the first injection portion facing the first combustion region; a second burner including a second injection portion of the second fuel, the second injection portion facing the second combustion region; and a control device that adjusts a second fuel flow rate ratio between a flow rate of the second fuel injected from the first injection portion and a flow rate of the second fuel injected from the second injection portion.
    Type: Application
    Filed: September 16, 2024
    Publication date: January 2, 2025
    Applicant: IHI Corporation
    Inventors: Shintaro ITO, Masahiro UCHIDA
  • Patent number: 12180848
    Abstract: A centrifugal compressor includes: a housing including an intake flow path; a compressor impeller arranged in the intake flow path and including a plurality of blades; an accommodation chamber formed upstream of the blades in a flow of intake air in the housing; a movable member arranged in the accommodation chamber and movable to a protruding position where the movable member protrudes into the intake flow path and to a retracted position where the movable member is retracted from the intake flow path; a plurality of slits formed closer to the blades with respect to the accommodation chamber in the housing and connected to the intake flow path; a plurality of compartment walls circumferentially separating the plurality of slits; and an outer circumferential wall connecting radially outer ends of the plurality of compartment walls.
    Type: Grant
    Filed: November 6, 2023
    Date of Patent: December 31, 2024
    Assignee: IHI Corporation
    Inventors: Atsushi Yonemura, Ryota Sakisaka, Yoichi Sato, Taiki Kanzawa
  • Patent number: 12173412
    Abstract: A sliding component having a wear-resistant coating includes a sliding component formed of a Ni alloy, and a wear-resistant coating provided on a sliding surface of the sliding component. The wear-resistant coating has, at least on the surface side thereof, an Al-containing Co alloy layer which contains Co as a main component, at least one of W, Ni, Mo, Fe, Si, and C, Cr, and 0.3% by mass or more and 26% by mass or less of Al.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: December 24, 2024
    Assignee: IHI Corporation
    Inventors: Hiroki Yoshizawa, Mitsutoshi Watanabe, Kenta Kawahara
  • Publication number: 20240417333
    Abstract: A method for covering a fiber body includes an impregnation condition determination process for, at a time of carrying out a chemical vapor infiltration to cover the fiber body with a ceramic, determining an infiltration temperature and an infiltration pressure that maximizes a film growth rate of the ceramic throughout the fiber body relative to the infiltration temperature; and an infiltration step for supplying a film gas including an ingredient of the ceramic to carry out the chemical vapor infiltration at the infiltration temperature and the infiltration pressure determined in the impregnation condition determination process.
    Type: Application
    Filed: August 28, 2024
    Publication date: December 19, 2024
    Applicants: IHI CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Yasuyuki FUKUSHIMA, Kazuma AKIKUBO, Yukihiro SHIMOGAKI, Takeshi MOMOSE
  • Publication number: 20240416370
    Abstract: Discharge surface treatment is carried out by an electrode provided with a sintered body of a metal micro-powder having a median diameter of 3 micrometers or smaller and a metal macro-powder having a median diameter larger than 3 micrometers and not larger than 10 micrometers, in which the metal micro-powder and the metal macro-powder form an electrode powder containing Cr and oxygen, which is produced by mixing and granulating the metal micro-powder and the metal macro-powder, compressing and molding the granulated powder under a pressure of from 20 MPa to 300 MPa, and firing the compressed body at from 450 degrees C. to 950 degrees C., and the oxygen content rate of the sintered body is 1.5 mass % or higher and 4.0 mass % or lower.
    Type: Application
    Filed: August 26, 2024
    Publication date: December 19, 2024
    Applicant: IHI Corporation
    Inventors: Hiroki YOSHIZAWA, Kazuki ITO, Hiroshi HORAI
  • Publication number: 20240418185
    Abstract: A centrifugal compressor includes: an impeller; and a housing that accommodates the impeller, the housing including: a primary flow path that accommodates the impeller; and a secondary flow path that surrounds the primary flow path in a cross-section perpendicular to an axial direction of the impeller, the secondary flow path including: a first end that opens to the primary flow path at a position upstream of the impeller in a flow of air in the primary flow path; and a second end that opens to the primary flow path at a position downstream of the first end, the first end opening to the primary flow path in a direction opposite to the impeller in the axial direction of the impeller, the second flow path including a throttle that is continuous with the first end and that is narrowed toward the first end.
    Type: Application
    Filed: September 3, 2024
    Publication date: December 19, 2024
    Applicant: IHI Corporation
    Inventor: Yasutaka BESSHO
  • Publication number: 20240413674
    Abstract: A stator includes: a stator core (11) including a back yoke (13) provided around an axis and surrounding a rotor (30), and teeth (14) provided at intervals in a circumferential direction of the axis and attached to the back yoke (13), and a coil (12) wound around each of the teeth (14). Each of the teeth (14) has an inner circumferential surface facing the rotor (30) and includes a tip portion (14a) projecting forward and backward in a rotational direction of the rotor (30), and a base portion (14b) facing the back yoke (13). The inner circumferential surface (14c) includes a first region (14d) and a second region (14e). An average interval between the second region (14e) and an outermost locus of the rotor (30) is larger than an average interval between the first region (14d) and the outermost locus of the rotor (30).
    Type: Application
    Filed: August 22, 2024
    Publication date: December 12, 2024
    Applicants: IHI Corporation, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Fuminori SUZUKI, Takehiro JIKUMARU, Masatsugu TAKEMOTO
  • Publication number: 20240410584
    Abstract: A combustor includes: a plurality of burners supplied with ammonia and a second fuel; and a controller. The controller is configured to execute: supplying the second fuel to at least a first burner among the plurality of burners in a first load range including zero load; and, in a second load range where an equivalent ratio of the first burner reaches a predetermined first value, increasing a flow rate of ammonia and decreasing a flow rate of the second fuel for the first burner so that the total equivalent ratio of ammonia and the second fuel of the first burner is maintained at the first value, and supplying excess second fuel that is not supplied to the first burner to a second burner.
    Type: Application
    Filed: August 15, 2024
    Publication date: December 12, 2024
    Applicant: IHI Corporation
    Inventors: Shintaro ITO, Soichiro KATO
  • Patent number: 12163441
    Abstract: A turbocharger includes: a housing; a plurality of covers each of which encloses at least a part of an outer surface of the housing, the plurality of covers including at least a first cover and a second cover, each of the plurality of covers accommodating an insulator between the cover and the outer surface of the housing; and a connecting piece directly arranged on the outer surface of the housing and connecting the first cover and the second cover.
    Type: Grant
    Filed: November 1, 2023
    Date of Patent: December 10, 2024
    Assignee: IHI Corporation
    Inventors: Tomohiro Honma, Kenta Kawamitsu, Yoshinari Yoshida