Patents by Inventor Ryozo Tanaka
Ryozo Tanaka 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: 11946390Abstract: Provided is a rotor blade configured to be implanted in a disc of a rotating body, the rotor blade including a blade root, wherein in a cross-sectional shape of the blade root, the blade root includes at least one stage of protruding parts protruding toward opposite sides with respect to a direction containing a circumferential component, the protruding parts being configured to lock the blade root to the disc, each of the protruding parts has a contact surface configured to come into contact with the disc and inclined so as to extend toward a center part of the blade root from radially inside to radially outside, and each of the protruding parts has a non-contact surface configured not to come into contact with the disc and inclined so as to extend toward the center part of the blade root from the radially inside to the radially outside.Type: GrantFiled: June 25, 2021Date of Patent: April 2, 2024Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hirotaka Kurashima, Hirokazu Matsuda, Ryoji Tamai, Ryozo Tanaka
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Publication number: 20210324750Abstract: Provided is a rotor blade configured to be implanted in a disc of a rotating body, the rotor blade including a blade root, wherein in a cross-sectional shape of the blade root, the blade root includes at least one stage of protruding parts protruding toward opposite sides with respect to a direction containing a circumferential component, the protruding parts being configured to lock the blade root to the disc, each of the protruding parts has a contact surface configured to come into contact with the disc and inclined so as to extend toward a center part of the blade root from radially inside to radially outside, and each of the protruding parts has a non-contact surface configured not to come into contact with the disc and inclined so as to extend toward the center part of the blade root from the radially inside to the radially outside.Type: ApplicationFiled: June 25, 2021Publication date: October 21, 2021Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hirotaka KURASHIMA, Hirokazu MATSUDA, Ryoji TAMAI, Ryozo TANAKA
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Patent number: 10066489Abstract: A rotating body includes a rotating body core, and a plurality of blades provided at an outer or inner circumference of the rotating body core at equal intervals in a circumferential direction, and connected circumferentially via an annular connection portion provided separately from the rotating body core. A resonance frequency under a two nodal diameter number mode of the rotating body is lower than or equal to a rotational secondary harmonic frequency with respect to a rated rotation speed. Where Nd represents an order of a maximum mistuned component among order components of circumferential distribution of mass, rigidity or natural frequency of the blades, arrangement of the blades satisfies Nd?5, and has order components each having ratio less than 1/2, in which the ratio is obtained by dividing the order component by the magnitude of the component of the order Nd.Type: GrantFiled: December 16, 2015Date of Patent: September 4, 2018Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryozo Tanaka, Ryoji Tamai, Toshiyuki Yamamoto, Yoshichika Sato, Yoshinobu Sakano
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Patent number: 10018053Abstract: In a structure for internally cooling a turbine blade, a cooling medium passage is provided in the turbine blade. The cooling medium passage has a shape in which a plurality of cylindrical spaces, each having substantially cylindrical shape, extending in parallel with each other partially overlap each other. A cooling medium supply passage that supplies a cooling medium to the cooling medium passage is connected to a portion of the cooling medium passage that includes a peripheral wall, in a direction that forms an acute angle with respect to a longitudinal direction of the cooling medium passage.Type: GrantFiled: November 18, 2015Date of Patent: July 10, 2018Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, B&B AGEMA GmbHInventors: Tomoki Taniguchi, Ryozo Tanaka, Takeshi Horiuchi, Takao Sugimoto, Masahide Kazari, Karsten Kusterer, Dieter Bohn, Gang Lin
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Patent number: 9945233Abstract: A double-jet film cooling structure includes: an injection port, formed on a wall surface facing a high-temperature gas passage; a main passage as a straight round hole to supply cooling medium to the injection port; a pair of branch passages as straight round holes; and communication passages connecting the main passage to the branch passages. The main passage and the branch passages have same constant inner diameters. Each communication passages has an envelope surface obtained by continuously arranging straight round holes each passing a branch point and having the constant inner diameter. Transverse injection angles of the branch passages relative to gas flow along the wall surface are oriented in opposite directions. An angle between axial direction of the main passage and the wall surface is greater than an angle formed between axial direction of branch passage and the wall surface.Type: GrantFiled: November 18, 2015Date of Patent: April 17, 2018Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, B&B AGEMA GmbHInventors: Ryozo Tanaka, Takao Sugimoto, Masahide Kazari, Tomoki Taniguchi, Karsten Kusterer, Dieter Bohn, Nurettin Tekin
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Patent number: 9599411Abstract: Provided is a film cooling structure capable of suppressing a cooling medium film from being separated from a wall surface, to increase a film efficiency on the wall surface and thereby-cool the wall surface effectively. One or more pairs of injection holes are formed on a wall surface facing a passage of high-temperature gas to inject a cooling medium to the passage. A single supply passage is formed inside the wall to supply the cooling medium to the injection holes. A separating section is provided between the injection holes in a location forward relative to rear ends of the injection holes to separate the cooling medium into components flowing to the injection holes. An injection direction of the cooling medium is inclined relative to a gas flow direction so that the cooling medium forms swirl flows that push the cooling medium against the wall surface.Type: GrantFiled: March 2, 2011Date of Patent: March 21, 2017Assignees: Kawasaki Jukogyo Kabushiki Kaisha, B&B AGEMA GmbHInventors: Ryozo Tanaka, Masahide Kazari, Takao Sugimoto, Karsten Kusterer, Dieter Bohn, Anas Elyas
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Patent number: 9506364Abstract: At least one sealing arrangement is provided for a connecting mechanism between an inner annular member or an outer annular member and an associated segment to connect between the annular members and the segments. The sealing arrangement includes an elastic sealing member provided between the sealing surfaces, disposed linearly along a side of polygon defined around a central axis.Type: GrantFiled: January 11, 2011Date of Patent: November 29, 2016Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Ryozo Tanaka, Tomoki Taniguchi
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Patent number: 9453434Abstract: A combined-type gas turbine engine system is provided which achieves high efficiency by very effectively using exhaust heat from a gas turbine engine. In a gas turbine engine system including: a compressor for compressing a first working medium; a heater for heating the compressed first working medium by an external heat source; a turbine for outputting power from the first working medium; an intermediate cooler provided at the compressor for cooling the first working medium compressed by a low-pressure compression part of the compressor and supplying the first working medium to a high-pressure compression part of the compressor; and an exhaust heat boiler using as a heating medium an exhaust gas from the turbine, a Rankine cycle engine using the intermediate cooler and the exhaust heat boiler as heat sources and a cooling medium of the intermediate cooler as a second working medium.Type: GrantFiled: April 2, 2013Date of Patent: September 27, 2016Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuhiko Tanimura, Ryozo Tanaka, Takao Sugimoto, Hiroshi Morishita, Karsten Kusterer, Dieter Bohn, Rene Braun
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Patent number: 9359958Abstract: A seal mechanism is provided which comprises a structure capable of accommodating radial expansions of turbine rotor without increasing an axial size thereof and providing a reliable sealing property for the turbine rotor for a long time. The seal mechanism comprises a labyrinth seal 91, 93 defined by a projection 87 provided on the turbine rotor 11B, an outer member 67 provided radially outward of the projection and supported for displacement in a radial direction, and an inner member 69 provided radially inward of the projection and supported for displacement in the radial direction. A thermal expansion rate of the inner member is greater than that of the outer member.Type: GrantFiled: March 16, 2011Date of Patent: June 7, 2016Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshihiko Mutou, Ryozo Tanaka
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Publication number: 20160115796Abstract: In a structure for internally cooling a turbine blade, a cooling medium passage is provided in the turbine blade. The cooling medium passage has a shape in which a plurality of cylindrical spaces, each having substantially cylindrical shape, extending in parallel with each other partially overlap each other. A cooling medium supply passage that supplies a cooling medium to the cooling medium passage is connected to a portion of the cooling medium passage that includes a peripheral wall, in a direction that forms an acute angle with respect to a longitudinal direction of the cooling medium passage.Type: ApplicationFiled: November 18, 2015Publication date: April 28, 2016Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, B&B AGEMA GmbHInventors: Tomoki TANIGUCHI, Ryozo TANAKA, Takeshi HORIUCHI, Takao SUGIMOTO, Masahide KAZARI, Karsten KUSTERER, Dieter BOHN, Gang LIN
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Publication number: 20160102564Abstract: A rotating body includes a rotating body core, and a plurality of blades provided at an outer or inner circumference of the rotating body core at equal intervals in a circumferential direction, and connected circumferentially via an annular connection portion provided separately from the rotating body core. A resonance frequency under a two nodal diameter number mode of the rotating body is lower than or equal to a rotational secondary harmonic frequency with respect to a rated rotation speed. Where Nd represents an order of a maximum mistuned component among order components of circumferential distribution of mass, rigidity or natural frequency of the blades, arrangement of the blades satisfies Nd?5, and has order components each having ratio less than 1/2, in which the ratio is obtained by dividing the order component by the magnitude of the component of the order Nd.Type: ApplicationFiled: December 16, 2015Publication date: April 14, 2016Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryozo TANAKA, Ryoji TAMAI, Toshiyuki YAMAMOTO, Yoshichika SATO, Yoshinobu SAKANO
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Publication number: 20160069192Abstract: A double-jet film cooling structure includes: an injection port, formed on a wall surface facing a high-temperature gas passage; a main passage as a straight round hole to supply cooling medium to the injection port; a pair of branch passages as straight round holes; and communication passages connecting the main passage to the branch passages. The main passage and the branch passages have same constant inner diameters. Each communication passages has an envelope surface obtained by continuously arranging straight round holes each passing a branch point and having the constant inner diameter. Transverse injection angles of the branch passages relative to gas flow along the wall surface are oriented in opposite directions. An angle between axial direction of the main passage and the wall surface is greater than an angle formed between axial direction of branch passage and the wall surface.Type: ApplicationFiled: November 18, 2015Publication date: March 10, 2016Applicants: B&B AGEMA GMBH, KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryozo TANAKA, Takao SUGIMOTO, Masahide KAZARI, Tomoki TANIGUCHI, Karsten KUSTERER, Dieter BOHN, Nurettin TEKIN
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Publication number: 20150075133Abstract: A gas turbine engine system is provided which achieves high efficiency while using sunlight as a heat source. In a gas turbine engine system including: a compressor configured to compress a first working medium; a heater configured to heat the compressed first working medium by an external heat source; a turbine configured to output power from the first working medium; and an intermediate cooler provided at the compressor and configured to cool the first working medium compressed by a low-pressure compression part of the compressor and supply the first working medium to a high-pressure compression part of the compressor, an organic Rankine cycle engine using, as a second working medium, an organic substance which is a cooling medium of the intermediate cooler is provided.Type: ApplicationFiled: April 2, 2013Publication date: March 19, 2015Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuhiko Tanimura, Ryozo Tanaka, Takao Sugimoto, Hiroshi Morishita, Karsten Kusterer, Dieter Bohn, Rene Braun
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Publication number: 20150059341Abstract: A combined-type gas turbine engine system is provided which achieves high efficiency by very effectively using exhaust heat from a gas turbine engine. In a gas turbine engine system including: a compressor for compressing a first working medium; a heater for heating the compressed first working medium by an external heat source; a turbine for outputting power from the first working medium; an intermediate cooler provided at the compressor for cooling the first working medium compressed by a low-pressure compression part of the compressor and supplying the first working medium to a high-pressure compression part of the compressor; and an exhaust heat boiler using as a heating medium an exhaust gas from the turbine, a Rankine cycle engine using the intermediate cooler and the exhaust heat boiler as heat sources and a cooling medium of the intermediate cooler as a second working medium.Type: ApplicationFiled: April 2, 2013Publication date: March 5, 2015Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuhiko Tanimura, Ryozo Tanaka, Takao Sugimoto, Hiroshi Morishita, Karsten Kusterer, Dieter Bohn, Rene Braun
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Publication number: 20130200571Abstract: A seal mechanism is provided which comprises a structure capable of accommodating radial expansions of turbine rotor without increasing an axial size thereof and providing a reliable sealing property for the turbine rotor for a long time. The seal mechanism comprises a labyrinth seal 91, 93 defined by a projection 87 provided on the turbine rotor 11B, an outer member 67 provided radially outward of the projection and supported for displacement in a radial direction, and an inner member 69 provided radially inward of the projection and supported for displacement in the radial direction. A thermal expansion rate of the inner member is greater than that of the outer member.Type: ApplicationFiled: March 16, 2011Publication date: August 8, 2013Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshihiko Mutou, Ryozo Tanaka
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Publication number: 20130175015Abstract: Provided is a film cooling structure capable of suppressing a cooling medium film from being separated from a wall surface, to increase a film efficiency on the wall surface and thereby-cool the wall surface effectively. One or more pairs of injection holes are formed on a wall surface facing a passage of high-temperature gas to inject a cooling medium to the passage. A single supply passage is formed inside the wall to supply the cooling medium to the injection holes. A separating section is provided between the injection holes in a location forward relative to rear ends of the injection holes to separate the cooling medium into components flowing to the injection holes. An injection direction of the cooling medium is inclined relative to a gas flow direction so that the cooling medium forms swirl flows that push the cooling medium against the wall surface.Type: ApplicationFiled: March 2, 2011Publication date: July 11, 2013Applicants: B&B AGEMA GMBH, KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryozo Tanaka, Masahide Kazari, Takao Sugimoto, Karsten Kusterer, Dieter Bohn, Anas Elyas
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Publication number: 20130034451Abstract: A gas turbine engine comprises a hollow rotor including a plurality of rotor segments stacked and coupled together in a direction of its center axis and forming at least one of a compressor and a turbine; and a pipe unit inserted into an inner space of the rotor in the center axis direction. In the gas turbine engine, a weight distribution of the pipe unit within an axial transverse section is set eccentric with respect to the center axis of the rotor. In this way, a gas turbine engine which is high in performance and reliability is provided, in which a pipe provided in an inner space of the rotor to transport a cooling medium or lay out a cable, etc., is prevented from whirling.Type: ApplicationFiled: February 21, 2011Publication date: February 7, 2013Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Tomoki Taniguchi, Ryozo Tanaka
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Publication number: 20120294706Abstract: At least one sealing arrangement is provided for a connecting mechanism between an inner annular member or an outer annular member and an associated segment to connect between the annular members and the segments. The sealing arrangement includes an elastic sealing member provided between the sealing surfaces, disposed linearly along a side of polygon defined around a central axis.Type: ApplicationFiled: January 11, 2011Publication date: November 22, 2012Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Ryozo Tanaka, Tomoki Taniguchi
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Patent number: 7682132Abstract: A film cooling structure includes a wall surface which faces a gas-flow passage for high-temperature gas. One or more than one pair of jetting holes are formed on the wall surface so as to respectively jet cooling media into the gas-flow passage. The pair of jetting holes respectively have jetting directions in which the cooling media are jetted from the pair of jetting holes into the gas-flow passage. The jetting directions of the pair of jetting holes are respectively set so as to respectively form swirls in directions in which the cooling media are mutually pressed against the wall surface.Type: GrantFiled: November 15, 2006Date of Patent: March 23, 2010Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Takao Sugimoto, Ryozo Tanaka, Koichiro Tsuji, Dieter Bohn, Karsten Kusterer
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Publication number: 20070109743Abstract: A film cooling structure includes a wall surface which faces a gas-flow passage for high-temperature gas. One or more than one pair of jetting holes are formed on the wall surface so as to respectively jet cooling media into the gas-flow passage. The pair of jetting holes respectively have jetting directions in which the cooling media are jetted from the pair of jetting holes into the gas-flow passage. The jetting directions of the pair of jetting holes are respectively set so as to respectively form swirls in directions in which the cooling media are mutually pressed against the wall surface.Type: ApplicationFiled: November 15, 2006Publication date: May 17, 2007Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takao Sugimoto, Ryozo Tanaka, Koichiro Tsuji, Dieter Bohn, Karsten Kusterer