Patents by Inventor Shumpei Yamazaki

Shumpei Yamazaki 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: 11821428
    Abstract: Provided is a motor-integrated fluid machine that has improved performance and reliability by efficiently cooling a fluid machine body and a motor without increasing an installation space. The present invention is characterized by being provided with: a fluid machine unit that compresses or expands a fluid; a motor unit that has a drive shaft connected to the fluid machine unit; and a cooling fan that cools the motor unit and the fluid machine unit by sucking cooling air from the motor unit side and that is connected to the drive shaft at the side opposed to that connected to the fluid machine unit, wherein between the motor unit and the cooling fan, the minimum sectional area of a cooling air passage from the outside in the radial direction toward the drive shaft is larger than that of a cooling air passage from the motor unit side toward the cooling fan.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: November 21, 2023
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Yoshiyuki Kanemoto, Fuminori Kato
  • Patent number: 11795943
    Abstract: A scroll-type fluid machine includes a motor unit and a main body. The motor unit includes a rotor, a stator, a shaft provided with an eccentric portion at a distal end of the shaft and configured to rotate integrally with the rotor, a main bearing configured to support the shaft, and a motor cover configured to house the rotor and the stator. The main bearing is fixed to an inside of the motor cover by a fixing flange. The main bearing supports the shaft and is located between the fixing flange and an end bracket on an opposite side of the main body unit with respect to the fixing flange.
    Type: Grant
    Filed: July 19, 2022
    Date of Patent: October 24, 2023
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori Kato, Shumpei Yamazaki, Yoshiyuki Kanemoto, Takanori Emi
  • Publication number: 20230184252
    Abstract: Provided is a motor-integrated fluid machine that has improved performance and reliability by efficiently cooling a fluid machine body and a motor without increasing an installation space. The present invention is characterized by being provided with: a fluid machine unit that compresses or expands a fluid; a motor unit that has a drive shaft connected to the fluid machine unit; and a cooling fan that cools the motor unit and the fluid machine unit by sucking cooling air from the motor unit side and that is connected to the drive shaft at the side opposed to that connected to the fluid machine unit, wherein between the motor unit and the cooling fan, the minimum sectional area of a cooling air passage from the outside in the radial direction toward the drive shaft is larger than that of a cooling air passage from the motor unit side toward the cooling fan.
    Type: Application
    Filed: July 15, 2016
    Publication date: June 15, 2023
    Inventors: Shumpei YAMAZAKI, Yoshiyuki KANEMOTO, Fuminori KATO
  • Publication number: 20230033883
    Abstract: A scroll type gas machine that can suppress wear of tip seals is provided. The scroll type compressor includes: a fixed scroll 11 having a helical wrap 16; an orbiting scroll 12 having a helical wrap 21; a drive shaft 13 that causes the orbiting scroll 12 to orbit relative to the fixed scroll 11; and a helical tip seal 29A inserted into a seal groove 28A of the wrap 21. The tip seal 29A has: a groove 36A that has an opening at a central portion of a sliding surface 30 in the seal width direction; and a communication groove 37A that establishes communication between the inside of the groove 36A and a working chamber SH on the inner side in the wrap width direction. The groove 36A is provided in a range where the differential pressure (PH?PL) is equal to or higher than 0.1 Mpa between the working chamber SH on the inner side in the wrap width direction and a working chamber SL on the outer side in the wrap width direction.
    Type: Application
    Filed: July 9, 2020
    Publication date: February 2, 2023
    Inventors: Yoshio KOBAYASHI, Shumpei YAMAZAKI, Sho WATANABE
  • Publication number: 20220349400
    Abstract: The purpose of the present invention is to provide a scroll-type fluid machine for which maintenance can easily be performed in necessary locations, and a maintenance method for said fluid machine.
    Type: Application
    Filed: July 19, 2022
    Publication date: November 3, 2022
    Inventors: Fuminori KATO, Shumpei YAMAZAKI, Yoshiyuki KANEMOTO, Takanori EMI
  • Patent number: 11441559
    Abstract: A scroll fluid machine includes a main body and a motor unit. The main body unit configured to compress a fluid. The motor unit configured to drive the main body unit. The main body unit and the motor unit are connected via the eccentric portion. The main body casing and the motor cover are fastened with a fastening member. The motor unit includes a main bearing that is fixed to an inside of the motor cover by a flange. The main bearing is configured to support the shaft and is located between the flange and an end bracket on an opposite side of the main body unit with respect to the flange.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: September 13, 2022
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori Kato, Shumpei Yamazaki, Yoshiyuki Kanemoto, Takanori Emi
  • Patent number: 11384763
    Abstract: A scroll-type fluid machine includes a fixed scroll, an orbiting scroll, a drive shaft, a cooling fan, and a cooling air duct. In a bent portion, immediately adjacent to the cooling fan, where a direction of the cooling air duct is changed from a direction perpendicular to the drive shaft to a direction of the drive shaft, a part of an outer peripheral wall which is distant from the drive shaft is planar and defines a plane which intersects a plane perpendicular to the drive shaft at an obtuse angle. With this configuration, a main stream of the cooling air is prevented from separating from an inner peripheral wall of the bent portion.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: July 12, 2022
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Kosuke Sadakata
  • Patent number: 11085444
    Abstract: Provided is a scroll-type fluid machine that prevents wear of the parts of the fluid machine and improves the reliability thereof by reducing the amount of dust that reaches a face seal. The present invention comprises a revolving scroll that includes an end plate and a lap part provided to the end plate, and that moves in a revolving manner; a fixed scroll that includes an end plate, a lap part provided to the end plate such that a compression chamber is formed between itself and the lap part of the revolving scroll, and a flange that opposes the end plate of the revolving scroll; and a face seal that is provided between the flange of the fixed scroll and the end plate of the revolving scroll, and that seals a space between the fixed scroll and the revolving scroll, with the scroll-type fluid machine further comprising a shield part that suppresses dust from reaching the face seal from the outside in the radial direction.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: August 10, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Yoshiyuki Kanemoto, Sho Watanabe
  • Patent number: 11015597
    Abstract: The objective of the present invention is to provide a scroll-type fluid machine, and a method for assembling this scroll-type fluid machine, with which an eccentric shaft and a non-eccentric part can be positioned easily in the same step, while allowing a main body unit and a motor unit to be separated and connected without being disassembled.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: May 25, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Yoshiyuki Kanemoto, Fuminori Kato, Takanori Emi
  • Patent number: 10895155
    Abstract: A package type compressor includes a housing, a compressor, a motor, an inverter, and a cooling fan. The housing has an air inlet. The compressor is disposed inside the housing where it compresses the air. The compressor is disposed in a compressor body inside the housing. The motor is disposed above the compressor inside the housing, and drives the compressor. The inverter is disposed in the region of the air inlet of the housing, and controls a rotation speed of the motor. The cooling fan is disposed inside of the compressor body. The cooling fan generates a flow path of cooling air within the package type compressor. The inverter is disposed in such a way that as the flow path of cooling air enters the air inlet of the housing, the flow path of cooling air passes directly over the inverter thereby cooling the inverter.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: January 19, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Takuya Kunitomo
  • Publication number: 20200309125
    Abstract: Provided is a scroll-type fluid machine that prevents wear of the parts of the fluid machine and improves the reliability thereof by reducing the amount of dust that reaches a face seal. The present invention comprises a revolving scroll that includes an end plate and a lap part provided to the end plate, and that moves in a revolving manner; a fixed scroll that includes an end plate, a lap part provided to the end plate such that a compression chamber is formed between itself and the lap part of the revolving scroll, and a flange that opposes the end plate of the revolving scroll; and a face seal that is provided between the flange of the fixed scroll and the end plate of the revolving scroll, and that seals a space between the fixed scroll and the revolving scroll, with the scroll-type fluid machine further comprising a shield part that suppresses dust from reaching the face seal from the outside in the radial direction.
    Type: Application
    Filed: July 7, 2016
    Publication date: October 1, 2020
    Inventors: Shumpei YAMAZAKI, Yoshiyuki KANEMOTO, Sho WATANABE
  • 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: 10563650
    Abstract: Provided is a compressor capable of calculating the correct time remaining before maintenance. The compressor is provided with: a compressor body that compresses fluid; a motor that drives the compressor body; a temperature sensor that detects the temperature of the compressor; a pressure sensor that detects the pressure of the compressed fluid outputted from the compressor body; and a calculation unit that calculates the time remaining before maintenance for the compressor body, using the temperature of the compressor and the pressure of the compressed fluid assigned with respective predetermined weights. The calculation unit changes the weighting of the temperature according to the pressure of the compressed fluid or the operation rate of the compressor body.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: February 18, 2020
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori Kato, Yoshiyuki Kanemoto, Shumpei Yamazaki
  • Patent number: 10415389
    Abstract: The purpose of the present invention is to provide a scroll fluid machine, the reliability of which is ensured and which can be manufactured with high productivity. The present invention provides a scroll fluid machine comprising: a stationary scroll having a spiral wrap upstanding therefrom; an orbiting scroll provided facing the stationary scroll and orbiting; a casing provided outside the orbiting scroll; a drive shaft for causing the orbiting scroll to orbit; an orbiting bearing for transmitting the rotational movement of the drive shaft to the orbiting scroll; and a plurality of rotation prevention mechanisms for preventing the orbiting scroll from rotating. The scroll fluid machine is characterized in that: the rotation prevention mechanisms have crankshafts and also have crank bearings for supporting the crankshafts; and the gap between each of the crankshafts and the corresponding one of the crank bearings is set to be greater than the gap between the drive shaft and the orbiting bearing.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 17, 2019
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Yoshiyuki Kanemoto, Fuminori Kato
  • Publication number: 20190101115
    Abstract: The objective of the present invention is to provide a scroll-type fluid machine, and a method for assembling this scroll-type fluid machine, with which an eccentric shaft and a non-eccentric part can be positioned easily in the same step, while allowing a main body unit and a motor unit to be separated and connected without being disassembled.
    Type: Application
    Filed: July 29, 2016
    Publication date: April 4, 2019
    Inventors: Shumpei YAMAZAKI, Yoshiyuki KANEMOTO, Fuminori KATO, Takanori EMI
  • Publication number: 20180328358
    Abstract: The purpose of the present invention is to provide a scroll-type fluid machine for which maintenance can easily be performed in necessary locations, and a maintenance method for said fluid machine.
    Type: Application
    Filed: August 26, 2016
    Publication date: November 15, 2018
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori KATO, Shumpei YAMAZAKI, Yoshiyuki KANEMOTO, Takanori EMI
  • Publication number: 20170298926
    Abstract: Provided is a compressor capable of calculating the correct time remaining before maintenance. The compressor is provided with: a compressor body that compresses fluid; a motor that drives the compressor body; a temperature sensor that detects the temperature of the compressor; a pressure sensor that detects the pressure of the compressed fluid outputted from the compressor body; and a calculation unit that calculates the time remaining before maintenance for the compressor body, using the temperature of the compressor and the pressure of the compressed fluid assigned with respective predetermined weights. The calculation unit changes the weighting of the temperature according to the pressure of the compressed fluid or the operation rate of the compressor body.
    Type: Application
    Filed: November 27, 2014
    Publication date: October 19, 2017
    Inventors: Fuminori KATO, Yoshiyuki KANEMOTO, Shumpei YAMAZAKI
  • 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
  • Publication number: 20170234130
    Abstract: The purpose of the present invention is to provide a scroll fluid machine, the reliability of which is ensured and which can be manufactured with high productivity. The present invention provides a scroll fluid machine comprising: a stationary scroll having a spiral wrap upstanding therefrom; an orbiting scroll provided facing the stationary scroll and orbiting; a casing provided outside the orbiting scroll; a drive shaft for causing the orbiting scroll to orbit; an orbiting bearing for transmitting the rotational movement of the drive shaft to the orbiting scroll; and a plurality of rotation prevention mechanisms for preventing the orbiting scroll from rotating. The scroll fluid machine is characterized in that: the rotation prevention mechanisms have crankshafts and also have crank bearings for supporting the crankshafts; and the gap between each of the crankshafts and the corresponding one of the crank bearings is set to be greater than the gap between the drive shaft and the orbiting bearing.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 17, 2017
    Inventors: Shumpei YAMAZAKI, Yoshiyuki KANEMOTO, Fuminori KATO
  • Patent number: 9435341
    Abstract: A scroll fluid machine includes: a casing; a fixed scroll having an end plate, a spiral wrap part provided on the end plate, and a flange provided outside the wrap part and fitted to the casing; and an orbiting scroll having an end plate and a spiral wrap part provided on the end plate with a plurality of compression chambers formed in a space up to the wrap part of the fixed scroll, which is provided to perform an orbiting motion, wherein the flange is provided with a deformation absorbing part which absorbs deformation due to thermal expansion of the end plate. The scroll fluid machine is improved in reliability while the compression efficiency is maintained by preventing the fixed scroll and the orbiting scroll from coming into contact with each other without increasing a clearance between the wrap parts of both scrolls.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 6, 2016
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shumpei Yamazaki, Kazutaka Suefuji, Yoshio Kobayashi, Koichi Tashiro