Patents by Inventor Kazutoshi Yokoo
Kazutoshi Yokoo 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).
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Patent number: 11519644Abstract: A cooling device includes a cooler disposed inside a shell main body formed in a cylindrical shape, and having a first surface facing an inlet nozzle and an outlet nozzle, and a partition member fixed to the first surface, and partitioning a portion between the cooler and an inner peripheral surface of the shell main body into a first space communicating with the inlet nozzle and a second space communicating with the outlet nozzle. The partition member includes a main partition plate disposed between the inlet nozzle and the outlet nozzle in an axial direction, a first guide portion extending from an end portion of the main partition plate toward a first end surface of the shell main body, and a second guide portion extending from an end portion of the main partition plate toward a second end surface of the shell main body.Type: GrantFiled: February 18, 2021Date of Patent: December 6, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Kazutoshi Yokoo, Hiroko Kitamoto
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Publication number: 20220268526Abstract: 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: ApplicationFiled: February 8, 2022Publication date: August 25, 2022Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Hiroyuki Miyata, Masahiro Kobayashi, Kazutoshi Yokoo
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Publication number: 20210262711Abstract: A cooling device includes a cooler disposed inside a shell main body formed in a cylindrical shape, and having a first surface facing an inlet nozzle and an outlet nozzle, and a partition member fixed to the first surface, and partitioning a portion between the cooler and an inner peripheral surface of the shell main body into a first space communicating with the inlet nozzle and a second space communicating with the outlet nozzle. The partition member includes a main partition plate disposed between the inlet nozzle and the outlet nozzle in an axial direction, a first guide portion extending from an end portion of the main partition plate toward a first end surface of the shell main body, and a second guide portion extending from an end portion of the main partition plate toward a second end surface of the shell main body.Type: ApplicationFiled: February 18, 2021Publication date: August 26, 2021Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Kazutoshi Yokoo, Hiroko Kitamoto
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Patent number: 10697459Abstract: A method of manufacturing a fluid apparatus with flanges that are fastened together may include the following steps: fastening the flanges with a fastening member; introducing a fluid into an internal space of the fluid apparatus, and plastically deforming portions of the flanges that form seats for receiving the fastening member and portions of the flanges that form mating surfaces with pressure of the fluid being applied; releasing the fastening member and correcting at least the mating surfaces out of the seats and the mating surfaces; and refastening the flanges.Type: GrantFiled: March 27, 2018Date of Patent: June 30, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Toshio Mizunoue, Kazutoshi Yokoo, Daisuke Hirata
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Patent number: 10527062Abstract: A centrifugal compressor includes a rotor including: a shaft that extends along an axis and an impeller that is fixed to an outer surface of the shaft and feeds a fluid that flows into a first side in an axial direction to an outer side in a radial direction of the axis under pressure; a diaphragm that surrounds the impeller from an outer circumference side; a first casing head disposed at a second side of the diaphragm in the axial direction at an interval; a seal device disposed between the first casing head and the shaft; and a bearing device disposed at the second side in the axial direction with respect to the seal device and disposed between the first casing head and the shaft.Type: GrantFiled: November 13, 2015Date of Patent: January 7, 2020Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Eiichi Yanagisawa, Kazutoshi Yokoo, Noriyuki Okada, Yuji Masuda, Shinichiro Tokuyama
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Patent number: 10385975Abstract: A rotary machine system includes: a rotary machine including a gas seal portion; a gas seal device connected to the rotary machine and that supplies a seal gas to the gas seal portion; a pressure sensor that detects a pressure of the seal gas; a vent portion that discharges the seal gas discharged from the gas seal portion; and a vent pressure sensor that detects a pressure in the vent portion. The rotary machine includes: a casing through which a working fluid flows; a rotatable rotary shaft that passes; and the gas seal portion provided between the casing and the rotary shaft and that seals the working fluid by the seal gas having a pressure higher than a pressure of the working fluid in the casing. The gas seal device includes: a pressure regulating valve; and a control part that controls the pressure regulating valve.Type: GrantFiled: October 15, 2015Date of Patent: August 20, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Ryo Egami, Takeshi Kaneko, Kazutoshi Yokoo, Masaki Shakuda, Masahiro Hayashi, Tomoaki Takeda
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Patent number: 10385862Abstract: A rotary machine system includes: a rotary machine including a gas seal portion; a gas seal device connected to the rotary machine and that supplies a seal gas to the gas seal portion; and a connecting pipe that connects the gas seal portion and the gas seal device. The rotary machine includes a casing through which a working fluid flows; a rotatable rotary shaft; and the gas seal portion that seals the working fluid by the seal gas having a pressure higher than a pressure of the working fluid in the casing. The gas seal device includes: a seal gas supply pipe through which the seal gas delivered to the connecting pipe flows; a pressure regulating valve provided in the seal gas supply pipe and that adjusts the pressure of the seal gas supplied to the gas seal portion; and a control part.Type: GrantFiled: October 15, 2015Date of Patent: August 20, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Ryo Egami, Takeshi Kaneko, Kazutoshi Yokoo, Masaki Shakuda, Masahiro Hayashi, Tomoaki Takeda
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Patent number: 10300522Abstract: A forming method for a disk-shaped component includes: mounting a heated material on a table; applying a load to the material with a forming roll while rotating the table; forming the material into a disk shape using roll forging; and suppressing decrease in temperature of the material during forming using a heat retaining device.Type: GrantFiled: October 23, 2015Date of Patent: May 28, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Yujiro Watanabe, Nobuyori Yagi, Atsushi Kawasaki, Ken Ishii, Kazutoshi Yokoo
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Publication number: 20180347589Abstract: A centrifugal compressor includes a rotor including: a shaft that extends along an axis and an impeller that is fixed to an outer surface of the shaft and feeds a fluid that flows into a first side in an axial direction to an outer side in a radial direction of the axis under pressure; a diaphragm that surrounds the impeller from an outer circumference side; a first casing head disposed at a second side of the diaphragm in the axial direction at an interval; a seal device disposed between the first casing head and the shaft; and a bearing device disposed at the second side in the axial direction with respect to the seal device and disposed between the first casing head and the shaft.Type: ApplicationFiled: November 13, 2015Publication date: December 6, 2018Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Eiichi Yanagisawa, Kazutoshi Yokoo, Noriyuki Okada, Yuji Masuda, Shinichiro Tokuyama
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Publication number: 20180283385Abstract: A method of manufacturing a fluid apparatus with flanges that are fastened together may include the following steps: fastening the flanges with a fastening member; introducing a fluid into an internal space of the fluid apparatus, and plastically deforming portions of the flanges that form seats for receiving the fastening member and portions of the flanges that form mating surfaces with pressure of the fluid being applied; releasing the fastening member and correcting at least the mating surfaces out of the seats and the mating surfaces; and refastening the flanges.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Toshio Mizunoue, Kazutoshi Yokoo, Daisuke Hirata
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Patent number: 9939209Abstract: A gas cooler (10) which is provided with a heat exchanger (6), cools a gas to be cooled, which is introduced from the outside, by performing heat exchange between the gas to be cooled and the heat exchanger, and discharges the cooled gas to the outside. The heat exchanger includes: a plurality of heat transfer fins (8) which are placed side by side via a prescribed gap therebetween, the gas to be cooled flowing through the gaps; and heat transfer tubes (7) which pierce through the plurality of heat transfer fins and are provided in a plurality of rows along the direction in which the gas to be cooled flows. The outside diameter do of the heat transfer tubes is 20 to 30 mm.Type: GrantFiled: February 16, 2010Date of Patent: April 10, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazutoshi Yokoo, Shigenari Horie, Masashi Yoshikawa, Tomoaki Takeda, Koichi Mizushita, Kazunari Tanaka
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Publication number: 20180056366Abstract: A forming method for a disk-shaped component includes: mounting a heated material on a table; applying a load to the material with a forming roll while rotating the table; forming the material into a disk shape using roll forging; and suppressing decrease in temperature of the material during forming using a heat retaining device.Type: ApplicationFiled: October 23, 2015Publication date: March 1, 2018Applicant: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Yujiro WATANABE, Nobuyori YAGI, Atsushi KAWASAKI, Ken ISHII, Kazutoshi YOKOO
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Publication number: 20170370372Abstract: A rotary machine system includes: a rotary machine including a gas seal portion; a gas seal device connected to the rotary machine and that supplies a seal gas to the gas seal portion; and a connecting pipe that connects the gas seal portion and the gas seal device. The rotary machine includes a casing through which a working fluid flows; a rotatable rotary shaft; and the gas seal portion that seals the working fluid by the seal gas having a pressure higher than a pressure of the working fluid in the casing. The gas seal device includes: a seal gas supply pipe through which the seal gas delivered to the connecting pipe flows; a pressure regulating valve provided in the seal gas supply pipe and that adjusts the pressure of the seal gas supplied to the gas seal portion; and a control part.Type: ApplicationFiled: October 15, 2015Publication date: December 28, 2017Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Ryo Egami, Takeshi Kaneko, Kazutoshi Yokoo, Masaki Shakuda, Masahiro Hayashi, Tomoaki Takeda
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Publication number: 20170363209Abstract: A rotary machine system includes: a rotary machine including a gas seal portion; a gas seal device connected to the rotary machine and that supplies a seal gas to the gas seal portion; a pressure sensor that detects a pressure of the seal gas; a vent portion that discharges the seal gas discharged from the gas seal portion; and a vent pressure sensor that detects a pressure in the vent portion. The rotary machine includes: a casing through which a working fluid flows; a rotatable rotary shaft that passes; and the gas seal portion provided between the casing and the rotary shaft and that seals the working fluid by the seal gas having a pressure higher than a pressure of the working fluid in the casing. The gas seal device includes: a pressure regulating valve; and a control part that controls the pressure regulating valve.Type: ApplicationFiled: October 15, 2015Publication date: December 21, 2017Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Ryo Egami, Takeshi Kaneko, Kazutoshi Yokoo, Masaki Shakuda, Masahiro Hayashi, Tomoaki Takeda
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Publication number: 20170350631Abstract: The pressure reducing device (4) for a cooling system according to the present invention is equipped with: a pressure reducing valve (5) that is disposed in a stage subsequent to a condenser for a refrigerant (40); and a microscopic bubble formation unit (20) that is disposed within the flow path for the refrigerant from the condenser to a heat exchanger so as to form the vapor phase (41) of the refrigerant (40) into microscopic bubbles (41a) and disperse the microscopic bubbles into the liquid phase (42) of the refrigerant.Type: ApplicationFiled: January 16, 2015Publication date: December 7, 2017Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Kazutoshi YOKOO, Takeshi KANEKO, Hideki NAGAO, Koichi MIZUSHITA
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Patent number: 9815134Abstract: The present invention relates to an impeller manufacturing method in which a thermal cycle is performed on an assembly body with a brazing material formed of a Ni-containing Au alloy being placed at a bond portion of at least two impeller constituent members. The thermal cycle includes a temperature increasing process with a temperature increasing rate of 20° C./hr. to 100° C./hr., the process including a first intermediate retention and a second intermediate retention each keeping the temperature, the first intermediate retention performed in a temperature range of 500° C. to 850° C. and the second intermediate retention performed in a temperature range of 850° C. to 950° C. (but not including 850° C.). In the thermal cycle, the temperature is increased in a temperature range exceeding 950° C. after the second intermediate retention at a rate lower than that before the second intermediate retention.Type: GrantFiled: January 10, 2017Date of Patent: November 14, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATIONInventors: Kazutoshi Yokoo, Daisuke Tanaka, Daisuke Kawada, Koshiro Niihara, Hiroki Takagi, Yujiro Watanabe, Hiroshi Nakajima
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Patent number: 9713907Abstract: A tire vulcanizing apparatus of the present invention includes a liftable center post which supports a green tire, and a heating portion which is fixed to the center post, is disposed inside the green tire, and transmits heat from the inside of the green tire to the green tire by radiation heat.Type: GrantFiled: January 26, 2015Date of Patent: July 25, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES MACHINERY TECHNOLOGY CORPORATIONInventors: Fumito Kajitani, Kazutoshi Yokoo, Koji Shintani
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Publication number: 20170144241Abstract: The present invention relates to an impeller manufacturing method in which a thermal cycle is performed on an assembly body with a brazing material formed of a Ni-containing Au alloy being placed at a bond portion of at least two impeller constituent members. The thermal cycle includes a temperature increasing process with a temperature increasing rate of 20° C./hr. to 100° C./hr., the process including a first intermediate retention and a second intermediate retention each keeping the temperature, the first intermediate retention performed in a temperature range of 500° C. to 850° C. and the second intermediate retention performed in a temperature range of 850° C. to 950° C. (but not including 850° C.). In the thermal cycle, the temperature is increased in a temperature range exceeding 950° C. after the second intermediate retention at a rate lower than that before the second intermediate retention.Type: ApplicationFiled: January 10, 2017Publication date: May 25, 2017Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazutoshi YOKOO, Daisuke TANAKA, Daisuke KAWADA, Koshiro NIIHARA, Hiroki TAKAGI, Yujiro WATANABE, Hiroshi NAKAJIMA
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Patent number: 9566655Abstract: The present invention relates to an impeller manufacturing method in which a thermal cycle is performed on an assembly body with a brazing material formed of a Ni-containing Au alloy being placed at a bond portion of at least two impeller constituent members. The thermal cycle includes a temperature increasing process with a temperature increasing rate of 20° C./hr. to 100° C./hr., the process including a first intermediate retention and a second intermediate retention each keeping the temperature, the first intermediate retention performed in a temperature range of 500° C. to 850° C. and the second intermediate retention performed in a temperature range of 850° C. to 950° C. (but not including 850° C.). In the thermal cycle, the temperature is increased in a temperature range exceeding 950° C. after the second intermediate retention at a rate lower than that before the second intermediate retention.Type: GrantFiled: November 22, 2011Date of Patent: February 14, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazutoshi Yokoo, Daisuke Tanaka, Daisuke Kawada, Koshiro Niihara, Hiroki Takagi, Yujiro Watanabe, Hiroshi Nakajima
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Publication number: 20160361882Abstract: A tire vulcanizing apparatus of the present invention includes a liftable center post which supports a green tire, and a heating portion which is fixed to the center post, is disposed inside the green tire, and transmits heat from the inside of the green tire to the green tire by radiation heat.Type: ApplicationFiled: January 26, 2015Publication date: December 15, 2016Inventors: Fumito KAJITANI, Kazutoshi YOKOO, Koji SHINTANI