Patents by Inventor Toshikazu Harashima

Toshikazu Harashima 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
  • 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
  • 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
  • Patent number: 9790943
    Abstract: A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 17, 2017
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Yoshio Kobayashi, Natsuki Kawabata, Toshikazu Harashima, Shumpei Yamazaki
  • Patent number: 9518580
    Abstract: A scroll type fluid machine for improving compression efficiency while preventing contact between wrap sections of opposed scrolls, includes a first scroll member provided with a wrap section of a spiral shape on an end plate, a second scroll member disposed at a position opposed to the first scroll member and provided with a wrap section of a spiral shape on an end plate, cooling fins arranged on a back side surface of the end plate of at least one of the first scroll member and the second scroll member, and projected sections arranged on the wrap section of at least one of the first scroll member and the second scroll member, in which a difference of thicknesses in the radial direction of the wrap section at a distal end and a base end of the projected sections is changed depending on a position in a peripheral direction.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: December 13, 2016
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventor: Toshikazu Harashima
  • 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
  • Publication number: 20150152863
    Abstract: A scroll type fluid machine for improving compression efficiency while preventing contact between wrap sections of opposed scrolls, includes a first scroll member provided with a wrap section of a spiral shape on an end plate, a second scroll member disposed at a position opposed to the first scroll member and provided with a wrap section of a spiral shape on an end plate, cooling fins arranged on a back side surface of the end plate of at least one of the first scroll member and the second scroll member, and projected sections arranged on the wrap section of at least one of the first scroll member and the second scroll member, in which a difference of thicknesses in the radial direction of the wrap section at a distal end and a base end of the projected sections is changed depending on a position in a peripheral direction.
    Type: Application
    Filed: July 10, 2014
    Publication date: June 4, 2015
    Inventor: Toshikazu HARASHIMA
  • Publication number: 20150147215
    Abstract: A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 28, 2015
    Inventors: Kiminori IWANO, Yoshio KOBAYASHI, Natsuki KAWABATA, Toshikazu HARASHIMA, Shumpei YAMAZAKI
  • Patent number: 8979515
    Abstract: A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 17, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Yoshio Kobayashi, Natsuki Kawabata, Toshikazu Harashima, Shumpei Yamazaki
  • Patent number: 8967986
    Abstract: To provide a higher sealing capability irrespective of the pressure difference between compression chambers, lips having leading ends extended toward the inner surface of a recessed groove are formed. At least some of the lips have a base end that is shaped to reduce rigidity against extension of the lips.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: March 3, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Toshikazu Harashima, Yoshiyuki Kanemoto, Koji Fukui, Susumu Sakamoto
  • 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
  • Publication number: 20120315174
    Abstract: A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.
    Type: Application
    Filed: January 19, 2012
    Publication date: December 13, 2012
    Applicant: Hitachi Industrial Equipment Systems Co., LTD.
    Inventors: Kiminori IWANO, Yoshio Kobayashi, Natsuki Kawabata, Toshikazu Harashima, Shumpei Yamazaki
  • Patent number: 8328544
    Abstract: The invention reduces a centrifugal force of an orbiting scroll which acts on an auxiliary crank mechanism. A crank pin which is eccentric from a main shaft portion is formed in a drive shaft and attached to an orbiting bearing which is provided in a back face side of an orbiting scroll. The main shaft portion of the drive shaft is rotatably supported by a main bearing. An internal gap of the main bearing is set to a value which is larger than a value obtained by subtracting the double value of an eccentric amount difference between an eccentric amount of an auxiliary crank shaft and an eccentric amount of the drive shaft from an internal gap of the orbiting bearing.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: December 11, 2012
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kiminori Iwano, Kazutaka Suefuji, Toshikazu Harashima