Patents by Inventor Kosuke SADAKATA

Kosuke SADAKATA 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: 20210102540
    Abstract: A package-type compressor includes a body unit, a controller, a casing, a first cooling air inlet, a second cooling air inlet, a cooling air outlet, a fan duct, a cooling fan, an air cooling type heat exchanger, a machine chamber, and a cooling duct. The cooling duct is provided below the fan duct, the cooling duct causing the cooling air taken in at the second cooling air inlet to flow along the controller toward the suction port of the fan duct. A vertical projection plane of the cooling fan overlaps the machine chamber and the cooling duct.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 8, 2021
    Inventors: Kosuke SADAKATA, Toshikazu HARASHIMA, Hitoshi NISHIMURA, Kentaro YAMAMOTO, Masahiko TAKANO
  • Patent number: 10907636
    Abstract: Provided is a package-type compressor that can improve cooling performance for cooling a body unit and a control panel. The package-type compressor includes: a cooling fan accommodated in a fan duct to induce a flow of cooling air taken in through inlets and discharged through an outlet; a machine chamber that causes the cooling air taken in at the inlet to flow along a body unit; and a cooling duct that causes the cooling air taken in at the inlet to flow along the control panel. A center position of the suction port of the fan duct is offset away from the inlet and toward the inlet with respect to a center position of a drive shaft of a motor of the body unit.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: February 2, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kosuke Sadakata, Toshikazu Harashima, Hitoshi Nishimura, Kentaro Yamamoto, Masahiko Takano
  • Publication number: 20200300246
    Abstract: Provided is a package-type compressor that can improve cooling performance for cooling a body unit and a control panel. The package-type compressor includes: a cooling fan accommodated in a fan duct to induce a flow of cooling air taken in through inlets and discharged through an outlet; a machine chamber that causes the cooling air taken in at the inlet to flow along a body unit; and a cooling duct that causes the cooling air taken in at the inlet to flow along the control panel. A center position of the suction port of the fan duct is offset away from the inlet and toward the inlet with respect to a center position of a drive shaft of a motor of the body unit.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 24, 2020
    Inventors: Kosuke SADAKATA, Toshikazu HARASHIMA, Hitoshi NISHIMURA, Kentaro YAMAMOTO, Masahiko TAKANO
  • Publication number: 20200284260
    Abstract: Provided is a scroll-type fluid machine that has an improved reliability without a reduction in productivity by adopting a simple shape of a cooling air passage to allow a cooling air to flow efficiently. Accordingly, a scroll-type fluid machine includes a fixed scroll that is provided with a lap portion having a spiral shape; an orbiting scroll that is provided with a lap portion having a spiral shape which forms a compression chamber between the lap portion of the fixed scroll and the lap portion; a drive shaft that is connected to the orbiting scroll and rotates to cause the orbiting scroll to orbit; a cooling fan that is provided on a side of the drive shaft, the side being opposite to the orbiting scroll, to generate a cooling air; and a cooling air duct through which the cooling air generated by the cooling fan flows to the fixed scroll and the orbiting scroll.
    Type: Application
    Filed: March 9, 2018
    Publication date: September 10, 2020
    Inventors: Shumpei YAMAZAKI, Kosuke SADAKATA
  • Patent number: 10704549
    Abstract: A screw compressor includes: a male rotor 2 and a female rotor 3 including a rotor tooth section 21, 31 that has multiple helical teeth, the male rotor 2 and the female rotor 3 rotating in engagement with each other; a casing 4 including a main casing 41 with a bore 45 formed to accommodate the male rotor 2 and the female rotor 3, and a discharge-side casing 43 closing a discharge side of the bore 45; and a discharge passage 60 including a discharge port 61 that opens in a rotational axis direction of the male rotor 2 and the female rotor 3 on a bore side surface of the discharge-side casing 43, compressed gas flowing from the discharge port 61 circulating in the discharge passage 60. The male rotor 2 and the female rotor 3 are configured such that a discharge-side end surface 21a, 31a of the rotor tooth section 21, 31 serves as a discharge-side distal end of the male rotor 2 or the female rotor 3 in the rotational axis direction.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: July 7, 2020
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Makoto Yuki, Masahiko Takano, Hitoshi Nishimura, Kosuke Sadakata, Toshikazu Harashima
  • Patent number: 10514037
    Abstract: There is provided a liquid feeding type screw compressor that can reduce size and weight and improve vibration insulation and sound insulation. A liquid feeding type screw compressor includes as components: a compressor main body; a motor driving the compressor main body; and a gas-liquid separator separating a liquid from a compressed air discharged from the compressor main body. The motor is arranged above the compressor main body. The gas-liquid separator is arranged below the compressor main body. A compressor main body casing constituting an inner cylindrical space forming a compression operation chamber together with the screw rotor and constituting the contour of the compressor main body and a casing constituting the contour of another component consist of an integrally molded single member.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: December 24, 2019
    Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
    Inventors: Kosuke Sadakata, Hitoshi Nishimura, Toshikazu Harashima, Kentaro Yamamoto, Takeshi Tsuchiya, Kotaro Chiba
  • Publication number: 20190331115
    Abstract: A screw compressor that enhances performance of a compressor main unit and a motor is provided. The screw compressor includes an oil-injected compressor main unit that compresses air with injecting oil in a compression chamber and an axial-gap motor that drives the compressor main unit. A male rotor of the compressor main unit has a suction-side shaft portion connected coaxially with a rotor shaft of the motor. The screw compressor further includes a suction-side bearing that rotatably supports the suction-side shaft portion of the male rotor. The suction-side bearing restricts axial movement of the suction-side shaft portion and bears a radial load and axial loads in both directions.
    Type: Application
    Filed: July 4, 2016
    Publication date: October 31, 2019
    Inventors: Toshikazu HARASHIMA, Hitoshi NISHIMURA, Takeshi TSUCHIYA, Kosuke SADAKATA, Masahiko TAKANO
  • Publication number: 20190170143
    Abstract: Provided is a fluid machine configured such that liquid supplied to a working chamber from the outside of the fluid machine is dispersed extensively in the working chamber. This fluid machine is constituted of a screw rotor and a casing for accommodating the screw rotor and is provided with a liquid supply section for supplying liquid into a working chamber from the outside. The liquid supply section is configured so that liquid is dispersed in the longitudinal direction of the tooth groove of the screw rotor rather than in the width direction thereof.
    Type: Application
    Filed: August 22, 2017
    Publication date: June 6, 2019
    Inventors: Kotaro CHIBA, Masahiko TAKANO, Toshikazu HARASHIMA, Kosuke SADAKATA, Kentaro YAMAMOTO, Takeshi TSUCHIYA, Masanao KOTANI, Ryoji KAWAI, Minako KANADA
  • Patent number: 10082141
    Abstract: The objective of the present invention is to provide a scroll-type fluid machine for which the service life can be improved by reducing the load applied to a rotation prevention mechanism.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: September 25, 2018
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Kazutaka Suefuji, Yoshio Kobayashi, Toshikazu Harashima, Kosuke Sadakata, Koichi Tashiro
  • Patent number: 9964107
    Abstract: A fluid machine includes a piston, a valve seat plate, a valve, and a valve retainer that reduces an opening amount of the valve. One end of the valve retainer is fixed with a fastener together with the valve to the valve seat plate. The fastener spans through the one end of the valve retainer and the valve to thereby fasten the one end of the valve retainer and the valve to the valve seat plate. A second end of the valve retainer that is opposite to the one end does not contact the valve seat plate.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: May 8, 2018
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kosuke Sadakata, Koichi Tashiro, Kazutaka Suefuji
  • Publication number: 20180106254
    Abstract: There is provided a liquid feeding type screw compressor that can reduce size and weight and improve vibration insulation and sound insulation. A liquid feeding type screw compressor includes as components: a compressor main body; a motor driving the compressor main body; and a gas-liquid separator separating a liquid from a compressed air discharged from the compressor main body. The motor is arranged above the compressor main body. The gas-liquid separator is arranged below the compressor main body. A compressor main body casing constituting an inner cylindrical space forming a compression operation chamber together with the screw rotor and constituting the contour of the compressor main body and a casing constituting the contour of another component consist of an integrally molded single member.
    Type: Application
    Filed: March 28, 2016
    Publication date: April 19, 2018
    Inventors: Kosuke SADAKATA, Hitoshi NISHIMURA, Toshikazu HARASHIMA, Kentaro YAMAMOTO, Takeshi TSUCHIYA, Kotaro CHIBA
  • Publication number: 20180058452
    Abstract: A screw compressor includes: a male rotor 2 and a female rotor 3 including a rotor tooth section 21, 31 that has multiple helical teeth, the male rotor 2 and the female rotor 3 rotating in engagement with each other; a casing 4 including a main casing 41 with a bore 45 formed to accommodate the male rotor 2 and the female rotor 3, and a discharge-side casing 43 closing a discharge side of the bore 45; and a discharge passage 60 including a discharge port 61 that opens in a rotational axis direction of the male rotor 2 and the female rotor 3 on a bore side surface of the discharge-side casing 43, compressed gas flowing from the discharge port 61 circulating in the discharge passage 60. The male rotor 2 and the female rotor 3 are configured such that a discharge-side end surface 21a, 31a of the rotor tooth section 21, 31 serves as a discharge-side distal end of the male rotor 2 or the female rotor 3 in the rotational axis direction.
    Type: Application
    Filed: March 31, 2015
    Publication date: March 1, 2018
    Inventors: Makoto YUKI, Masahiko TAKANO, Hitoshi NISHIMURA, Kosuke SADAKATA, Toshikazu HARASHIMA
  • Publication number: 20150354551
    Abstract: An object of the invention is to provide a fluid machine capable of reducing vibration of a discharge valve while reducing a delay of closing of the discharge valve. The invention provides “a fluid machine, including: a piston reciprocating in a cylinder; a valve seat plate provided in the cylinder; a valve provided to a port portion of the valve seat plate and opening and closing in accordance with reciprocation of the piston; and a valve retainer for regulating an opening amount of the valve, wherein a surface of the valve retainer, the surface facing the valve seat plate, is inclined above the port portion so that an open end side is closer to the port portion and has a part farthest from the valve seat plate between the port portion and the fixed end”.
    Type: Application
    Filed: June 24, 2013
    Publication date: December 10, 2015
    Inventors: Kosuke SADAKATA, Koichi TASHIRO, Kazutaka SUEFUJI
  • Publication number: 20150337834
    Abstract: The objective of the present invention is to provide a scroll-type fluid machine for which the service life can be improved by reducing the load applied to a rotation prevention mechanism.
    Type: Application
    Filed: December 16, 2013
    Publication date: November 26, 2015
    Inventors: Kiminori IWANO, Kazutaka SUEFUJI, Yoshio KOBAYASHI, Toshikazu HARASHIMA, Kosuke SADAKATA, Koichi TASHIRO
  • Patent number: 9115719
    Abstract: A scroll fluid machine having: a compressor body including a fixed scroll and an orbiting scroll opposed to the fixed scroll, the orbiting scroll orbiting; a drive shaft connected to the orbiting scroll; a cooling fan provided on another side of the drive shaft opposite to the orbiting scroll, the cooling fan generating a cooling wind; and a cooling wind passage surrounded by walls in all directions, the cooling wind passage sending the cooling wind of the cooling fan to the compressor body, when the cooling wind passage being disposed left and the drive shaft being disposed right when seen from a direction in which the drive shaft extends, a size of the cooling wind passage in the left and right directions being smaller in upstream than downstream of the cooling wind passage.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: August 25, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kosuke Sadakata, Kiminori Iwano, Yoshio Kobayashi
  • Publication number: 20140154122
    Abstract: A scroll fluid machine having: a compressor body including a fixed scroll and an orbiting scroll opposed to the fixed scroll, the orbiting scroll orbiting; a drive shaft connected to the orbiting scroll; a cooling fan provided on another side of the drive shaft opposite to the orbiting scroll, the cooling fan generating a cooling wind; and a cooling wind passage surrounded by walls in all directions, the cooling wind passage sending the cooling wind of the cooling fan to the compressor body, when the cooling wind passage being disposed left and the drive shaft being disposed right when seen from a direction in which the drive shaft extends, a size of the cooling wind passage in the left and right directions being smaller in upstream than downstream of the cooling wind passage.
    Type: Application
    Filed: July 29, 2013
    Publication date: June 5, 2014
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kosuke SADAKATA, Kiminori IWANO, Yoshio KOBAYASHI
  • Publication number: 20140020553
    Abstract: A reciprocating compressor includes a piston which compresses air by, while rocking, reciprocatingly moving in a cylinder and a sealing member which is fitted in a groove formed on the piston for sealing between the cylinder and the piston. In the reciprocating compressor: the sealing member has a bottom portion to be fitted in the groove formed on the piston and a side portion provided radially outwardly of the piston; and the side portion includes a bent portion so as to reduce a gap between an upper end portion thereof and the piston.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 23, 2014
    Inventors: Toshikazu HARASHIMA, Kiminori IWANO, Kosuke SADAKATA