Patents by Inventor Eiji Konishi
Eiji Konishi 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: 12270302Abstract: A turbine includes: a rotor having a rotor body, and a plurality of rotor blades; a casing covering the rotor; and a plurality of stator blades, wherein the stator blades each include a stator blade body having formed on the surface thereof a suction part that extends in the radial direction and can suction at least a portion of working fluid, a nozzle inner peripheral member provided inward of the stator blade body in the radial direction, and a plurality of seal fins protruding inward in the radial direction from the inner peripheral surface of the nozzle inner peripheral member, and an ejection port for ejecting the working fluid guided from the suction part is formed in the nozzle inner peripheral member and in a portion of seal fins more on the other side than the seal fin most on one side in the axial line direction.Type: GrantFiled: October 19, 2021Date of Patent: April 8, 2025Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Atsushi Nakagawa, Eiji Konishi
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Patent number: 11927112Abstract: A sealing device according to at least one embodiment includes not less than three arc-shaped fins arranged in an axial direction. The arc-shaped fins include: a first fin which is one of two outermost fins located on an outermost side in the axial direction; a second fin disposed adjacent to the first fin in the axial direction; and at least one third fin disposed opposite to the first fin across the second fin in the axial direction. It is preferable that the third fin is disposed to be inclined with respect to a radial direction such that a tip end portion is located on a side of the first fin in the axial direction relative to a base end portion, and the third fin has a larger inclination angle than the first fin or the second fin with respect to the radial direction.Type: GrantFiled: September 26, 2022Date of Patent: March 12, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoto Omura, Kazuyuki Matsumoto, Yoshihiro Kuwamura, Eiji Konishi, Kentaro Tanaka
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Publication number: 20230374907Abstract: A turbine includes: a rotor having a rotor body, and a plurality of rotor blades; a casing covering the rotor; and a plurality of stator blades, wherein the stator blades each include a stator blade body having formed on the surface thereof a suction part that extends in the radial direction and can suction at least a portion of working fluid, a nozzle inner peripheral member provided inward of the stator blade body in the radial direction, and a plurality of seal fins protruding inward in the radial direction from the inner peripheral surface of the nozzle inner peripheral member, and an ejection port for ejecting the working fluid guided from the suction part is formed in the nozzle inner peripheral member and in a portion of seal fins more on the other side than the seal fin most on one side in the axial line direction.Type: ApplicationFiled: October 19, 2021Publication date: November 23, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Atsushi Nakagawa, Eiji Konishi
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Publication number: 20230017440Abstract: A sealing device according to at least one embodiment includes not less than three arc-shaped fins arranged in an axial direction. The arc-shaped fins include: a first fin which is one of two outermost fins located on an outermost side in the axial direction; a second fin disposed adjacent to the first fin in the axial direction; and at least one third fin disposed opposite to the first fin across the second fin in the axial direction. It is preferable that the third fin is disposed to be inclined with respect to a radial direction such that a tip end portion is located on a side of the first fin in the axial direction relative to a base end portion, and the third fin has a larger inclination angle than the first fin or the second fin with respect to the radial direction.Type: ApplicationFiled: September 26, 2022Publication date: January 19, 2023Inventors: Naoto OMURA, Kazuyuki MATSUMOTO, Yoshihiro KUWAMURA, Eiji KONISHI, Kentaro TANAKA
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Patent number: 11319825Abstract: A sealing device seals a gap between an outer circumferential surface of a rotor and an inner circumferential surface of a stator. The sealing device includes a sealing ring provided on the stator and having a free-cutting material, in which a convex portion and a concave portion are alternately formed in an axial direction, on a surface facing the rotor; a plurality of radial fins protruding radially outward from the outer circumferential surface of the rotor; and oblique fins which obliquely protrude from the outer circumferential surface of the rotor toward both ends of the free-cutting material of the sealing ring in the axial direction from the outside of the both ends.Type: GrantFiled: February 16, 2017Date of Patent: May 3, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Kohei Ozaki, Hidekazu Uehara, Azumi Yoshida, Toyoharu Nishikawa, Eiji Konishi, Shin Nishimoto
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Patent number: 11187097Abstract: A rotary machine includes: a stationary body having a stationary-side peripheral surface; a rotating body having a rotating-side peripheral surface facing the stationary side-peripheral surface. One surface which is one of the stationary-side peripheral surface and the rotating-side peripheral surface has an upstream-side peripheral surface, a downstream-side peripheral surface, and a rearward step surface. The other surface has an upstream-side seal fin forming a minute gap between the upstream-side seal fin and the upstream-side peripheral surface; a downstream-side seal fin forming a minute gap between the downstream-side seal fin and the downstream-side peripheral surface. The rearward step surface has a guide surface extending downstream Da2 while directed toward the other surface and connected to the upstream-side peripheral surface.Type: GrantFiled: February 17, 2017Date of Patent: November 30, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yoshihiro Kuwamura, Eiji Konishi, Toyoharu Nishikawa, Shin Nishimoto, Hidekazu Uehara
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Publication number: 20210222577Abstract: A sealing device seals a gap between an outer circumferential surface of a rotor and an inner circumferential surface of a stator. The sealing device includes a sealing ring provided on the stator and having a free-cutting material, in which a convex portion and a concave portion are alternately formed in an axial direction, on a surface facing the rotor; a plurality of radial fins protruding radially outward from the outer circumferential surface of the rotor; and oblique fins which obliquely protrude from the outer circumferential surface of the rotor toward both ends of the free-cutting material of the sealing ring in the axial direction from the outside of the both ends.Type: ApplicationFiled: February 16, 2017Publication date: July 22, 2021Inventors: Kohei OZAKI, Hidekazu UEHARA, Azumi YOSHIDA, Toyoharu NISHIKAWA, Eiji KONISHI, Shin NISHIMOTO
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Patent number: 11066946Abstract: In an axial turbomachinery related to the invention, a structural body has a casing fin, a blade is provided with an upstream inclined surface that is inclined from an upstream side toward a downstream side, the structural body is provided with an upstream inclined inner wall surface that is inclined from the upstream side the downstream side, an inclination angle of the upstream inclined surface with respect to a central axis of relative rotation between the blade and the structural body is larger than an inclination angle of the upstream inclined inner wall surface with respect to the central axis, and an end position of the upstream inclined surface on a radially inner side is located radially outside an end position of the upstream inclined inner wall surface on the radially inner side.Type: GrantFiled: February 23, 2018Date of Patent: July 20, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Eiji Konishi, Yoshihiro Kuwamura, Kazuyuki Matsumoto, Shinji Fukao, Hideaki Sugishita
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Patent number: 10975711Abstract: A seal structure is for sealing leakage fluid flowing through a gap between a rotation member rotating about a rotation axis and a stationary member facing the rotation member. The seal structure includes seal fins projecting from a base that is one of the rotation and stationary members toward the other one, the seal fins being spaced apart from each other at a certain interval in an axial direction of the rotation axis; and a step section provided to the other one, the step section including step surfaces facing the seal fins and a riser surface between the adjacent step surfaces, the step surfaces and the riser surface defining a step portion. The seal fins are inclined upstream in a flow direction of the leakage fluid relative to a radial direction perpendicular to the rotation axis. Each seal fin and the base define a corner portion having a curved surface.Type: GrantFiled: November 24, 2016Date of Patent: April 13, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yoshihiro Kuwamura, Eiji Konishi, Toyoharu Nishikawa, Shin Nishimoto, Hidekazu Uehara
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Patent number: 10941670Abstract: A seal structure is for sealing leakage fluid flowing through a gap between a rotation member rotating about a rotation axis and a stationary member facing the rotation member. The seal structure includes seal fins projecting from a base that is one of the rotation and stationary members toward the other one, the seal fins being spaced apart from each other at a certain interval in an axial direction of the rotation axis; and a step section provided to the other one, the step section including step surfaces facing the seal fins and a riser surface between the adjacent step surfaces, the step surfaces and the riser surface defining a step portion. The seal fins are inclined upstream in a flow direction of the leakage fluid relative to a radial direction perpendicular to the rotation axis. Each seal fin and the base define a corner portion having a curved surface.Type: GrantFiled: November 24, 2016Date of Patent: March 9, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yoshihiro Kuwamura, Eiji Konishi, Toyoharu Nishikawa, Shin Nishimoto, Hidekazu Uehara
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Patent number: 10907681Abstract: A pad bearing includes a pad disposed on a radially outer side of a rotary shaft and supporting the rotary shaft so as to be rotatable around an axis, a block-shaped nozzle member disposed on an upstream side with respect to the pad on the radially outer side of the rotary shaft and including a discharge hole for discharging a lubricant toward an outer peripheral surface of the rotary shaft, and a compressed flow forming unit disposed in at least one of the pad and the nozzle member and configured to compress a flow of the lubricant flowing along the outer peripheral surface of the rotary shaft as the rotary shaft rotates.Type: GrantFiled: March 5, 2019Date of Patent: February 2, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Eiji Konishi, Shimpei Yokoyama, Chihiro Yoshimine, Tadasuke Nishioka, Shuichi Isayama
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Publication number: 20190376403Abstract: In an axial turbomachinery related to the invention, a structural body has a casing fin, a blade is provided with an upstream inclined surface that is inclined from an upstream side toward a downstream side, the structural body is provided with an upstream inclined inner wall surface that is inclined from the upstream side the downstream side, an inclination angle of the upstream inclined surface with respect to a central axis of relative rotation between the blade and the structural body is larger than an inclination angle of the upstream inclined inner wall surface with respect to the central axis, and an end position of the upstream inclined surface on a radially inner side is located radially outside an end position of the upstream inclined inner wall surface on the radially inner side.Type: ApplicationFiled: February 23, 2018Publication date: December 12, 2019Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Eiji Konishi, Yoshihiro Kuwamura, Kazuyuki Matsumoto, Shinji Fukao, Hideaki Sugishita
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Publication number: 20190277338Abstract: A pad bearing includes a pad disposed on a radially outer side of a rotary shaft and supporting the rotary shaft so as to be rotatable around an axis, a block-shaped nozzle member disposed on an upstream side with respect to the pad on the radially outer side of the rotary shaft and including a discharge hole for discharging a lubricant toward an outer peripheral surface of the rotary shaft, and a compressed flow forming unit disposed in at least one of the pad and the nozzle member and configured to compress a flow of the lubricant flowing along the outer peripheral surface of the rotary shaft as the rotary shaft rotates.Type: ApplicationFiled: March 5, 2019Publication date: September 12, 2019Inventors: Eiji KONISHI, Shimpei YOKOYAMA, Chihiro YOSHIMINE, Tadasuke NISHIOKA, Shuichi ISAYAMA
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Publication number: 20190048734Abstract: A rotary machine includes: a stationary body having a stationary-side peripheral surface; a rotating body having a rotating-side peripheral surface facing the stationary side-peripheral surface. One surface which is one of the stationary-side peripheral surface and the rotating-side peripheral surface has an upstream-side peripheral surface, a downstream-side peripheral surface, and a rearward step surface. The other surface has an upstream-side seal fin forming a minute gap between the upstream-side seal fin and the upstream-side peripheral surface; a downstream-side seal fin forming a minute gap between the downstream-side seal fin and the downstream-side peripheral surface. The rearward step surface has a guide surface extending downstream Da2 while directed toward the other surface and connected to the upstream-side peripheral surface.Type: ApplicationFiled: February 17, 2017Publication date: February 14, 2019Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Yoshihiro Kuwamura, Eiji Konishi, Toyoharu Nishikawa, Shin Nishimoto, Hidekazu Uehara
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Publication number: 20180371927Abstract: A seal structure is for sealing leakage fluid flowing through a gap between a rotation member rotating about a rotation axis and a stationary member facing the rotation member. The seal structure includes seal fins projecting from a base that is one of the rotation and stationary members toward the other one, the seal fins being spaced apart from each other at a certain interval in an axial direction of the rotation axis; and a step section provided to the other one, the step section including step surfaces facing the seal fins and a riser surface between the adjacent step surfaces, the step surfaces and the riser surface defining a step portion. The seal fins are inclined upstream in a flow direction of the leakage fluid relative to a radial direction perpendicular to the rotation axis. Each seal fin and the base define a corner portion having a curved surface.Type: ApplicationFiled: November 24, 2016Publication date: December 27, 2018Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yoshihiro Kuwamura, Eiji Konishi, Toyoharu Nishikawa, Shin Nishimoto, Hidekazu Uehara
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Publication number: 20140293511Abstract: A device main body includes positive electrode layers, negative electrode layers, and separator layers interposed between the positive electrode layers and the negative electrode layers. A package includes a housing-shaped package main body in which the element main body is accommodated, and a package peripheral edge portion which is flat, thinner in thickness than the package main body, and extends continuously from the package main body. A positive and a negative electrode terminals are extended to the outside from the package peripheral edge portion, and respectively include positive and negative electrode folded-back portions that are formed by the extended portions being folded back. The positive and the negative electrode folded-back portions have free ends and in contact with a surface of the package peripheral edge portion.Type: ApplicationFiled: June 17, 2014Publication date: October 2, 2014Inventors: Atsutaka Mori, Katsuhiko Morita, Tadahiro Minamikawa, Eiji Konishi