Patents by Inventor Kenji Nagura

Kenji Nagura 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: 20190128265
    Abstract: A gas supplying apparatus includes a compressor, a housing having an exhaust port, and an exhaust duct. The housing has a circumferential wall and a top wall. The circumferential wall has an access section. The exhaust port is provided on at least one of the circumferential wall and the top wall at a location higher than the access section. The exhaust duct includes a discharge port for discharging the air, exhausted from the exhaust port, to the outside. The discharge port is opened upward or opened downward in an area overlapping the top wall in an up-and-down direction.
    Type: Application
    Filed: October 16, 2018
    Publication date: May 2, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takuya WASHIO, Koichiro HASHIMOTO, Daisuke WADA, Kenji NAGURA, Akitoshi FUJISAWA
  • Patent number: 10247179
    Abstract: A gas compression device (10) is provided with a compressor (16) and a recovery section (20). The recovery section (20) is provided with a recovery passage (22), an auxiliary compressor (24) which is provided in the recovery passage (22), and a recovery tank (26) which is provided in the recovery passage (22). When gas leaks from the main compressor (16), the auxiliary compressor (24) is driven and the leaked gas is compressed. The leaked gas, the pressure of which has been increased by the auxiliary compressor (24), flows into the recovery tank (26) and is stored therein. The gas within the recovery tank (26) is fed to a suction passage (14).
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: April 2, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Nagura, Hitoshi Takagi, Takuro Uba
  • Publication number: 20190086031
    Abstract: A gas supply device for supplying a hydrogen gas to a dispenser of a hydrogen station includes: a refrigerant flow path through which a refrigerant for cooling the gas before being discharged from the dispenser flows; a refrigerator that can cool the refrigerant; a cooling device that can cool the refrigerant by latent heat when liquid hydrogen changes to the hydrogen gas; and a control unit that performs control to activate the refrigerator while stopping the cooling device when a condition set in advance is satisfied after performing control to activate the cooling device in activation of the hydrogen station.
    Type: Application
    Filed: August 27, 2018
    Publication date: March 21, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Akitoshi FUJISAWA, Kenji NAGURA
  • Publication number: 20190041003
    Abstract: A gas supply device includes a compressor for compressing gas, an in-flow side flow passage having a buffer tank for storing the gas and linked to the compressor, an in-flow side on-off valve for opening and closing the in-flow side flow passage on an portion of the in-flow side flow passage upstream of the buffer tank, an out-flow side flow passage linked to a discharge side of the compressor, and a control unit for executing a control to close the in-flow side on-off valve upon receipt of a stop signal for the compressor.
    Type: Application
    Filed: January 27, 2017
    Publication date: February 7, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Koichiro HASHIMOTO, Akitoshi FUJISAWA, Takayuki FUKUDA, Daisuke WADA, Takuro UBA, Kenji NAGURA
  • Publication number: 20190032850
    Abstract: A combustible gas supply unit includes a high pressure gas facility for handling combustible gas which is compressed and a housing provided with a high pressure gas handling area containing the high pressure gas facility. The housing has a portion that is disposed in a side close to a boundary between premises of a hydrogen station and an outer region of the premises and constitutes the high pressure gas handling area, the portion being substantially composed of a partitioning wall member that resists an impact of an explosion of combustible gas.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 31, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takayuki FUKUDA, Kenji NAGURA, Koichiro HASHIMOTO, Daisuke WADA, Takuya WASHIO
  • Publication number: 20190035070
    Abstract: Present application discloses portable recording apparatus to be used for recording inspection result for hydrogen station. Recording apparatus includes image generator configured to generate input image, which is configured to receive input of inspection result, and circuit configuration image which represents part of circuit configuration in hydrogen station; display portion configured to display input image and circuit configuration image; and storage in which inspection result is stored, inspection result having been input by using input image which is displayed on display portion. Input image shows icons representing predetermined inspection points in hydrogen station, respectively, and input windows displayed in correspondence to inspection points, respectively.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 31, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takayuki FUKUDA, Kenji NAGURA, Koichiro HASHIMOTO
  • Publication number: 20190031156
    Abstract: The present application discloses a hydrogen station for supplying hydrogen to a tank of a tank-equipped device. The hydrogen station includes: an integrated controller for integrally controlling devices provided in the hydrogen station; a sensing portion for sensing leaked hydrogen which has leaked inside the integrated controller; a ventilation device performing a high ventilation measure of performing ventilation for air inside the integrated controller or an explosion prevention device performing an internal pressure-based explosion protection measure of creating a pressure-increased state inside the integrated controller; and a compressor unit including a compressor, which is used as one of the devices, and a housing, in which the compressor is stored. The integrated controller is mounted on the housing, and is electrically connected to the compressor via a through-hole formed in the housing to control the compressor.
    Type: Application
    Filed: July 2, 2018
    Publication date: January 31, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Takayuki FUKUDA, Kenji NAGURA
  • Publication number: 20190011179
    Abstract: A boil-off gas supply device is provided with: a storage tank configured to store a liquefied gas; a first compression mechanism configured to suck in the boil-off gas of the liquefied gas stored in the storage tank and compress the sucked boil-off gas; a second compression mechanism configured to compress the boil-off gas after being compressed by the first compression mechanism; a discharge path in which the boil-off gas discharged from the second compression mechanism flows; a first drive source configured to drive the first compression mechanism; and a second drive source that is different from the first drive source and configured to drive the second compression mechanism.
    Type: Application
    Filed: December 28, 2016
    Publication date: January 10, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Satoshi TEZUKA, Katsuhiro SEYAMA, Kenji NAGURA
  • Publication number: 20180371782
    Abstract: A combustible gas supply unit is for supplying compressed combustible gas to a dispenser. The combustible gas supply unit includes a high pressure gas facility for handling compressed combustible gas, a base plate having the high pressure gas facility installed thereon and a barrier supported by the base plate to surround at least a part of an outer periphery of the high pressure gas facility. A barrier is shaped to surround at least a part of an outer periphery of the high pressure gas facility and includes a part to be supported by a base plate having the high pressure gas facility installed thereon.
    Type: Application
    Filed: February 21, 2017
    Publication date: December 27, 2018
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Shota HARADA, Akitoshi FUJISAWA, Kenji NAGURA, Daisuke WADA, Takayuki FUKUDA
  • Patent number: 10145509
    Abstract: Provided is a hydrogen station that is used to charge hydrogen to a hydrogen tank mounted on a vehicle, the hydrogen station including: a compressor that compresses hydrogen; a lubricant cooling unit that cools the lubricant of the compressor while circulating the lubricant; a hydrogen cooling unit that is capable of cooling hydrogen which is not charged to the hydrogen tank mounted on the vehicle yet and is compressed by the compressor; a sensor that detects whether the vehicle approaches or reaches the hydrogen station; and a startup unit that starts up at least one of the lubricant cooling unit and the hydrogen cooling unit by a signal from the sensor.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: December 4, 2018
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Nagura, Hitoshi Takagi
  • Publication number: 20180306381
    Abstract: A gas supply device includes a storage container that accumulates liquefied gas, a vaporizer for vaporizing liquefied gas derived from the storage container, a compression device that compresses gas vaporized from the liquefied gas in the vaporizer, a pressure accumulator that accumulates gas compressed in the compression device, and a supply path linked to a dispenser from the pressure accumulator.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 25, 2018
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Akitoshi FUJISAWA, Kenji NAGURA
  • Patent number: 10087918
    Abstract: A compressor of the present invention comprises a crankshaft, a first compression part, and a second compression part for further compressing a gas discharged from the first compression part. The first compression part comprises a first reciprocating motion conversion part, a first pressing part, and a first cylinder body comprising a plurality of cylinder components, while the second compression part comprises a second reciprocating motion conversion part, a second pressing part, and a second cylinder body comprising a plurality of cylinder components. The number of the cylinder components of the second cylinder body is smaller than that of the cylinder components of the first cylinder body.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: October 2, 2018
    Assignee: Kobe Steel, Ltd.
    Inventors: Takashi Okuno, Kenji Nagura
  • Publication number: 20180274726
    Abstract: A gas supply system (2) includes a compressor unit (21), an accumulator unit (23), a pre-cooling system (24) and a housing (4). In the gas supply system (2), the compressor unit (21) is vertically arranged and the pre-cooling system (24) is arranged above the accumulator unit (23) in the housing (4). The compressor unit (21) and the accumulator unit (23) are covered by one rectangular parallelepiped housing (4).
    Type: Application
    Filed: May 30, 2018
    Publication date: September 27, 2018
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kenji NAGURA, Tetsuya KAKIUCHI, Takashi OKUNO, Koji NOISHIKI, Akitoshi FUJISAWA, Shinichi MIURA
  • Publication number: 20180238493
    Abstract: A gas supply device includes a first compressor that compresses hydrogen gas, an accumulator disposed downstream of the first compressor and supplying the hydrogen gas to a dispenser that fills the hydrogen gas in a vehicle, and a gas flow passage that connects the first compressor, the accumulator, and the dispenser, and a control device. The gas flow passage includes a lead-in line for leading the hydrogen gas into the accumulator, a lead-out line for leading out the hydrogen gas from the accumulator, a lead-in side valve, and a lead-out side valve. The control device is capable of simultaneously bringing the lead-in side valve and the lead-out side valve into an open state.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kenji NAGURA, Hitoshi TAKAGI, Takuro UBA
  • Publication number: 20180216878
    Abstract: A boil-off gas recovery system 1 includes a tank 2 storing liquefied gas, an oil supply type compressor 3b for compressing boil-off gas generated by partial evaporation of the liquefied gas in the tank 2, and a reliquefying system 9 for liquefying the boil-off gas compressed by the oil supply type compressor 3b and returning the liquefied gas that has been liquefied to the tank 2. The reliquefying system 9 includes a heat exchanger for oil constituent condensation 11 for cooling down the boil-off gas to a temperature equal to or lower than a condensation temperature of an oil constituent contained in the boil-off gas, a separator 14 for separating the oil constituent condensed by the heat exchanger for oil constituent condensation 11 from the boil-off gas, and a reliquefying portion for liquefying the boil-off gas from which the oil constituent is separated.
    Type: Application
    Filed: December 12, 2017
    Publication date: August 2, 2018
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Satoshi TEZUKA, Katsuhiro SEYAMA, Kenji NAGURA
  • Publication number: 20180023764
    Abstract: A gas delivery system including: a feeder for feeding a gas to a tank; a pressure storage container unit which has a plurality of pressure storage containers, and sends out the gas to the feeder; a gas supply unit; and a controller. The controller implements a storing operation that a specified pressure storage among the plurality of pressure storage containers is supplied with the gas until a pressure of the specified pressure storage container reaches a reference pressure or greater, after finish of a delivery of the gas to one tank carrier, and a sending operation that the gas is sent out from another pressure storage container except the specified pressure storage container to the feeder, and then sent out from the specified pressure storage container to the feeder on a receipt of a shift indication from the feeder, at a delivery of the gas to a subsequent tank carrier.
    Type: Application
    Filed: February 16, 2016
    Publication date: January 25, 2018
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takashi OKUNO, Kenji NAGURA, Hitoshi TAKAGI, Takuro UBA
  • Publication number: 20170328519
    Abstract: [Object] To enable a gas supply system to be easily transported and to increase a degree of freedom when the gas supply system is installed. [Solution] A hydrogen station includes: a filling facility for filling a tank-mounted device with a gas; and a gas supply system for supplying the gas to the filling facility. The gas supply system includes: a compressor for compressing the gas; a compressor accommodating body for accommodating the compressor; a refrigerator for cooling the gas flowed into the filling facility or the gas just before being flowed into the filling facility, the refrigerator including an evaporation part, an expansion part, and a compression part; and a cooler accommodating body for accommodating the evaporation part, the expansion part, and the compression part. The compressor accommodating body and the cooler accommodating body are detachable from each other.
    Type: Application
    Filed: September 16, 2015
    Publication date: November 16, 2017
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takashi OKUNO, Hitoshi TAKAGI, Kenji NAGURA, Daisuke WADA, Takuro UBA, Akitoshi FUJISAWA
  • Patent number: 9810374
    Abstract: A gas-filling apparatus includes a gas flow passage including an inflow end to which a gas supply source is connectable and an outflow end to which a pressure accumulator is connectable, a compressor, a storage portion, and an operation control portion conducting a first compression filling operation in which a gas supplied from the gas supply source connected to the inflow end is compressed by the compressor to be discharged from the outflow end and a second compression filling operation in which the gas stored in the storage portion is compressed by the compressor to be discharged from the outflow end, the operation control portion conducting the first compression filling operation until a pressure of the gas at the outflow end reaches a predetermined pressure and executing a control for shifting the first compression filling operation to the second compression filling operation when the pressure has reached the predetermined pressure.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: November 7, 2017
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Nagura, Hitoshi Takagi, Takuro Uba
  • Patent number: 9777726
    Abstract: In order to prevent the leakage of a gas from an internal space communicating with a compression chamber inside a cylinder in a cylinder head of a compressor, the compressor includes a suction valve pressing portion that presses a suction valve so that the suction valve provided in the internal space of the cylinder head does not slip off through a suction-side head opening, the suction valve pressing portion includes a suction valve pressing and inserting portion that is inserted into the cylinder head through the suction-side head opening, the outer peripheral surface of the suction valve pressing and inserting portion is provided with an annular suction valve pressing groove portion, a suction-side O-ring is attached into the suction valve pressing groove portion, and a suction-side backup ring that suppresses the movement of the suction-side O-ring toward the suction-side head opening is disposed at a position near the suction-side head opening of the suction-side O-ring inside the suction valve pressing
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: October 3, 2017
    Assignee: Kobe Steel, Ltd.
    Inventors: Kenji Nagura, Toshio Hirai, Hitoshi Takagi
  • Publication number: 20170146001
    Abstract: A gas compression device (10) is provided with a compressor (16) and a recovery section (20). The recovery section (20) is provided with a recovery passage (22), an auxiliary compressor (24) which is provided in the recovery passage (22), and a recovery tank (26) which is provided in the recovery passage (22). When gas leaks from the main compressor (16), the auxiliary compressor (24) is driven and the leaked gas is compressed. The leaked gas, the pressure of which has been increased by the auxiliary compressor (24), flows into the recovery tank (26) and is stored therein. The gas within the recovery tank (26) is fed to a suction passage (14).
    Type: Application
    Filed: June 4, 2015
    Publication date: May 25, 2017
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kenji NAGURA, Hitoshi TAKAGI, Takuro UBA