Patents by Inventor Hiroyuki Miyata

Hiroyuki Miyata 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: 11821424
    Abstract: A geared compressor includes a drive gear, a first intermediate gear, a second intermediate gear, a first impeller and a second impeller connected to a first driven gear, and a third impeller and a fourth impeller connected to a second driven gear. When viewed from an axial direction, a drive axis of the drive gear is disposed below a first intermediate axis of the first intermediate gear, a second intermediate axis of the second intermediate gear, a first driven axis of the first driven gear, and a second driven axis of the second driven gear in a vertical direction. The first impeller has a larger outer diameter than the second impeller, the third impeller, and the fourth impeller.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: November 21, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi
  • Patent number: 11788604
    Abstract: A planetary gear mechanism includes a sun gear rotatable about an axis, a first shaft that is fixed to the sun gear and is rotatable integrally with the sun gear, a plurality of planetary gears that mesh with the sun gear and are rotatable about a center line thereof parallel to the axis, an internal gear that includes internal teeth facing inside in a radial direction to mesh with the planetary gears and is rotatable about the axis, a second shaft that extends in the axial direction to be connected to the internal gear and rotates about the axis together with the internal gear, and a reinforcing member that is fixed to an outer peripheral surface of the internal gear and is formed in an annular shape of a material having a higher specific strength than that of a material forming the internal gear.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: October 17, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hideki Nagao, Hiroyuki Miyata
  • Publication number: 20230272872
    Abstract: An expansion joint of the present disclosure includes: a first flange disposed outside a pipe; a second flange disposed outside the pipe and is disposed away from the first flange in an axial direction of the joint; a main bellows connected to the first and second flanges and in which a flow passage of a fluid is formed; and a balancing device connected to the first and second flanges outside the main bellows and applies a thrust force opposite to a thrust force, applied to the first and second flanges in the axial direction by the main bellows, to the first and second flanges, wherein the balancing device includes a fluid supply unit, an elastic portion connected to the fluid supply unit and is allowed to expand and contract in the axial direction, and a connection portion connecting the elastic portion to the first and second flanges.
    Type: Application
    Filed: February 21, 2023
    Publication date: August 31, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yuki Yamamoto, Hiroyuki Miyata, Masahiro Kobayashi
  • Publication number: 20230272796
    Abstract: A geared compressor includes a drive gear, a first intermediate gear, a second intermediate gear, a first impeller and a second impeller connected to a first driven gear, and a third impeller and a fourth impeller connected to a second driven gear. When viewed from an axial direction, a drive axis of the drive gear is disposed below a first intermediate axis of the first intermediate gear, a second intermediate axis of the second intermediate gear, a first driven axis of the first driven gear, and a second driven axis of the second driven gear in a vertical direction. The first impeller has a larger outer diameter than the second impeller, the third impeller, and the fourth impeller.
    Type: Application
    Filed: February 22, 2023
    Publication date: August 31, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi
  • Publication number: 20230265918
    Abstract: A rotary mechanical system includes a driving machine, a transmission unit that includes a main shaft, a main gear, an auxiliary gear meshing with the main gear, an auxiliary shaft, and a first gear, a gearbox that includes a second gear meshing with the first gear, an input shaft with the second gear fixed, and an output shaft that shifts a rotation speed of the input shaft, and a rotary machine that includes a rotary machine shaft connected to the output shaft. The first gear is a spur gear having a plurality of first tooth portions which are spur teeth whose teeth traces are parallel to the central axis. The second gear has a plurality of second tooth portions which are spur teeth whose teeth traces are parallel to the central axis, and each of which is disposed between the adjacent first tooth portions.
    Type: Application
    Filed: February 21, 2023
    Publication date: August 24, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hideki Nagao, Hiroyuki Miyata
  • Publication number: 20230175517
    Abstract: An integrally geared compressor includes: a drive gear rotated by a motor; an intermediate gear meshing with the drive gear; a first drive side pinion meshing with the drive gear; a first intermediate side pinion meshing with the intermediate gear; a second intermediate side pinion meshing with the intermediate gear at a position away from the drive gear and the first intermediate side pinion; a first compression unit compressing a working fluid by rotation of the first drive side pinion; a second compression unit compressing a working fluid by rotation of the first intermediate side pinion; and a uniaxial multi-stage compressor further compressing the working fluid compressed by at least one of the first compression unit and the second compression unit.
    Type: Application
    Filed: November 29, 2022
    Publication date: June 8, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi, Naoto Yonemura, Yuji Futagami
  • Patent number: 11656026
    Abstract: A compressing system includes a compression section that compresses a target gas to an intermediate pressure, which is equal to or higher than a critical pressure and lower than a target pressure to generate an intermediate supercritical fluid, a cooling section that cools the intermediate supercritical fluid generated in the compression section to near a critical temperature to generate an intermediate supercritical pressure liquid, and a pumping section that compresses the intermediate supercritical pressure liquid generated in the cooling section to a pressure that is equal to or higher than the target pressure. At least one of the intermediate supercritical pressure liquid compressed in the pumping section, a low-temperature liquid generated by extracting the intermediate supercritical pressure liquid on the upstream side of the pumping section to reduce pressure to near the critical pressure, and an external cooling medium is used as a cooling medium in the cooling section.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: May 23, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Naoto Yonemura, Hiroyuki Miyata, Hideki Nagao
  • Patent number: 11649828
    Abstract: A rotary machine includes a cylindrical rotary shaft extending in a direction of an axis, a fastening bolt having a bolt body that extends in a direction of an axis O in the rotary shaft to form fastening portions at both ends, a pair of rotary bodies each having an end portion in the direction of the axis that is fixed to each of the pair of fastening portions to be in contact with an end surface of the rotary shaft in the direction of the axis, and a bolt extension mechanism that temporarily extends the bolt body in the direction of the axis.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: May 16, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Hideki Nagao
  • Publication number: 20230099357
    Abstract: A planetary gear mechanism includes a sun gear rotatable about an axis, a first shaft that is fixed to the sun gear and is rotatable integrally with the sun gear, a plurality of planetary gears that mesh with the sun gear and are rotatable about a center line thereof parallel to the axis, an internal gear that includes internal teeth facing inside in a radial direction to mesh with the planetary gears and is rotatable about the axis, a second shaft that extends in the axial direction to be connected to the internal gear and rotates about the axis together with the internal gear, and a reinforcing member that is fixed to an outer peripheral surface of the internal gear and is formed in an annular shape of a material having a higher specific strength than that of a material forming the internal gear.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 30, 2023
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hideki Nagao, Hiroyuki Miyata
  • Patent number: 11560903
    Abstract: A rotary machine includes a compression section that is disposed between the pair of radial bearings in a casing and compresses a fluid, an expansion section that is disposed side by side with the compression section and expands the fluid, and a thrust bearing that is disposed at a position close to a first end portion or a second end portion of a rotary shaft in an axial direction with respect to the compression section and the expansion section. Among a compression section suction port, a compression section discharge port, an expansion section suction port, and an expansion section discharge port, the compression section suction port is disposed at a position closest to the first end portion in the axial direction, and the expansion section discharge port is disposed at a position closest to the second end portion in the axial direction.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: January 24, 2023
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Masahiro Kobayashi, Hideki Nagao, Hiroyuki Miyata
  • Patent number: 11519416
    Abstract: A compressor system includes a driving unit having a drive shaft, a plurality of compressors which compress a gas, and a transmission mechanism which increases a speed of a rotation of the drive shaft and transmits the rotation to the plurality of compressors. The transmission mechanism includes a main shaft which rotates together with the drive shaft and a plurality of gear mechanisms which transmit a rotation of the main shaft to the corresponding one compressor. The gear mechanism includes an auxiliary shaft which rotates together with an auxiliary gear meshing with the main gear, a plurality of first gears which rotate together with the auxiliary shaft, an output shaft to which an output gear meshing with the first gear is fixed and which is connected to the compressor, and a first bearing which rotatably supports the auxiliary shaft, and a second bearing which rotatably supports the output shaft.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: December 6, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Hideki Nagao, Masahiro Kobayashi
  • Patent number: 11512706
    Abstract: A geared compressor includes a plurality of compression units and a compression-unit-driving mechanism which drives the plurality of compression units. The compression-unit-driving mechanism includes a plurality of driven gears which are provided in respective rotation shafts of the plurality of compression units and a plurality of large-diameter gears which are directly or indirectly driven by a drive source and have outer diameters larger than those of the plurality of driven gears. The plurality of large-diameter gears is arranged side by side in a horizontal direction and each of the plurality of large-diameter gears meshes with two or more of the plurality of driven gears.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: November 29, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi
  • Publication number: 20220307512
    Abstract: A compressor system includes a driving unit having a drive shaft, a plurality of compressors which compress a gas, and a transmission mechanism which increases a speed of a rotation of the drive shaft and transmits the rotation to the plurality of compressors. The transmission mechanism includes a main shaft which rotates together with the drive shaft and a plurality of gear mechanisms which transmit a rotation of the main shaft to the corresponding one compressor. The gear mechanism includes an auxiliary shaft which rotates together with an auxiliary gear meshing with the main gear, a plurality of first gears which rotate together with the auxiliary shaft, an output shaft to which an output gear meshing with the first gear is fixed and which is connected to the compressor, and a first bearing which rotatably supports the auxiliary shaft, and a second bearing which rotatably supports the output shaft.
    Type: Application
    Filed: February 16, 2022
    Publication date: September 29, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Hideki Nagao, Masahiro Kobayashi
  • Patent number: 11448237
    Abstract: A compressor 1 includes a casing 2 that covers a rotating shaft 4 and an impeller 6 and is provided with a diffuser 66 for guiding the working fluid discharged from the impeller 6 to an outside in a radial direction, a heat exchanger 71 that is cools at least a portion of the working fluid compressed by the impeller 6, a cooling fluid supplying unit 7 that supplies the working fluid cooled by the heat exchanger 71 into the casing 2 as a cooling fluid for cooling a motor 5 disposed in the casing 2, and a cooling fluid circulating unit 8 that discharges the cooling fluid that has passed through the motor 5 to an outside of the casing 2, and supplies the discharged cooling fluid downstream of an outlet 6o of a first impeller 6A and upstream of the diffuser 66.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: September 20, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi, Akihiro Nakaniwa
  • Patent number: 11426929
    Abstract: Provided is a powder material for producing a three-dimensional object including: a base material; a resin; and resin particles, wherein an amount W (mass %) of carbon remaining in the powder material after heating in a vacuum of 10?2 Pa or lower at 450 degrees C. for 2 hours satisfies the following formula: W (mass %)<0.9/M, where M represents the specific gravity of the base material.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: August 30, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Junjiroh Sogame, Kohsuke Miyazaki, Takumi Yokoyama, Shinichiroh Satoh, Takafumi Sasaki, Osamu Mizuta, Hiroyuki Miyata, Naoki Oya
  • Publication number: 20220268500
    Abstract: A compressor system includes a first pipe including a first pipe main body that forms a flow path therein and a first flange that projects from the first pipe main body to an outer peripheral side, and a second pipe including a second pipe main body that forms a flow path therein and a second flange that projects from the second pipe main body to an outer peripheral side and faces the first flange, a bellows provided so as to surround an entire circumference between the first flange and the second flange, and an excitation force reducing portion provided to separate the flow path and the bellows in a space between the first flange and the second flange and formed of a stretchable porous material.
    Type: Application
    Filed: January 12, 2022
    Publication date: August 25, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi, Masayuki Fujii
  • Publication number: 20220268291
    Abstract: A rotary machine includes a cylindrical rotary shaft extending in a direction of an axis, a fastening bolt having a bolt body that extends in a direction of an axis 0 in the rotary shaft to form fastening portions at both ends, a pair of rotary bodies each having an end portion in the direction of the axis that is fixed to each of the pair of fastening portions to be in contact with an end surface of the rotary shaft in the direction of the axis, and a bolt extension mechanism that temporarily extends the bolt body in the direction of the axis.
    Type: Application
    Filed: February 22, 2022
    Publication date: August 25, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Hideki Nagao
  • Publication number: 20220268526
    Abstract: A compressor module includes: a compressor; and a high-pressure gas cooler which cools gas discharged from the compressor, wherein the high-pressure gas cooler includes a plurality of gas cooler partial bodies, wherein each gas cooler partial body includes a high-pressure casing which is formed in a cylindrical container shape extending in a horizontal direction and to which the gas is introduced and a high-pressure heat exchange unit which is installed in the high-pressure casing and cools a gas passing in one direction orthogonal to a center axis of the high-pressure casing, and wherein the gas cooler partial bodies are arranged in parallel so that the center axes of the high-pressure casings are parallel to each other, the gas sequentially flows through the gas cooler partial bodies.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 25, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi, Kazutoshi Yokoo
  • Patent number: 11421700
    Abstract: A rotary machine includes a plurality of shafts that extend in an axial direction, in which an axis extends, around the axis, are disposed such that at least parts of positions in the axial direction of the plurality of shafts overlap each other, and are rotatable relative to each other around the axis; a plurality of seal members that are disposed at intervals in the axial direction to seal gaps between the plurality of shafts in a radial direction with respect to the axis; and a seal gas supply unit configured to supply a seal gas from outside to a space surrounded by the plurality of shafts and the plurality of seal members.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: August 23, 2022
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Hiroyuki Miyata, Masahiro Kobayashi
  • Publication number: 20220252139
    Abstract: The variable-speed accelerator includes an electric device, a transmission device, and a power supply portion that supplies electric power of a constant rated frequency supplied from a power supply to the electric device when the electric device is started. The electric device includes a constant-speed electric motor that rotates a constant-speed input shaft of the transmission device, and a variable-speed electric motor that functions as a generator in a generator mode and also functions as an electric motor in an electric motor mode. When starting the electric device, the power supply portion supplies the electric power generated by the variable-speed electric motor in the generator mode to the constant-speed electric motor after supplying starting power to the constant-speed electric motor and the variable-speed electric motor.
    Type: Application
    Filed: January 19, 2022
    Publication date: August 11, 2022
    Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Yoshiyuki Okamoto, Masahiro Kobayashi, Hiroyuki Miyata