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公开(公告)号：US20200300251A1
公开(公告)日：2020-09-24
申请号：US16088352
申请日：2017-03-23
摘要： The present invention provides a centrifugal compressor (1) including: a rotating shaft (2) which extends in an axial direction (D); a first impeller (3a); a second impeller (3b) which is disposed on a downstream side (D2) of the first impeller (3a); a return flow path (30) which guides a first fluid (G1) flowing to a radially outer side from the first impeller (3a) toward a radially inner side; an introduction flow path (26) which introduces the fluid guided to the radially inner side to the second impeller (3b); an intermediate suction flow path (10) which additionally supplies a second fluid (G2) to the second impeller (3b); and a curved flow path (27) which is connected to a downstream side of the introduction flow path (26) and the intermediate suction flow path (10), extends to be bent toward the downstream side (D2), and guides the first fluid and the second fluid to the second impeller (3b), wherein a side surface (26a) on an upstream side of the introduction flow path (26) is disposed on the downstream side (D2) from a return position (R) of the return flow path (30).
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公开(公告)号：US20200300252A1
公开(公告)日：2020-09-24
申请号：US16088365
申请日：2017-03-23
摘要： The present invention provides a centrifugal compressor (1) including: a first casing (19); a second casing (20) which is disposed on a downstream side of the first casing (19) and has an outer diameter larger than an outer diameter of the first casing; a first impeller (3a) which is disposed on a radially inner side of the first casing; a first return flow path (29a) which is disposed on a radially inner side of the first casing; a second impeller (3b) which is disposed on a radially inner side of the second casing and connected to a downstream side of the first return flow path (29a); an intermediate suction flow path (10) which is disposed on the radially inner side of the second casing and additionally supplies the fluid to a flow path between the first return flow path (29a) and the second impeller (3b); and a second return flow path (29b) which is disposed on the radially inner side of the second casing (20), wherein an outer diameter of the intermediate suction flow path (10) and an outer diameter of the second return flow path (29b) are larger than the outer diameter of the first casing (19).
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公开(公告)号：US12000311B2
公开(公告)日：2024-06-04
申请号：US18158043
申请日：2023-01-23
发明人： Katsumi Terada , Yuzo Tsurusaki
IPC分类号： F01D9/04
CPC分类号： F01D9/044 , F05D2220/31 , F05D2230/60 , F05D2230/70 , F05D2240/128
摘要： A nozzle module includes a nozzle body having a blade shape in a cross section and extending in a radial direction, and a platform member integrally connected to each end portion of the nozzle body in the radial direction. The platform member includes a first portion formed on a first side in an axial direction in which a central axis extends, and having a pair of first side surfaces extending in the axial direction, when viewed in the radial direction, and a second portion formed to extend to a second side in the axial direction with respect to the first portion, and having a second side surface extending obliquely with respect to the first side surface, when viewed in the radial direction.
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公开(公告)号：US11951594B2
公开(公告)日：2024-04-09
申请号：US16110327
申请日：2018-08-23
发明人： Kosei Kawahara
CPC分类号： B24D15/04 , B24B5/06 , B24B5/40 , B24B19/14 , B24B29/08 , B24B57/02 , B24D3/002 , B24D3/004 , B24D18/009
摘要： To uniformly bring an abrasive into contact with a workpiece and to achieve desired surface roughness. A polishing tool sliding on a narrow part of the workpiece includes an abrasive retaining layer configured to allow an abrasive to be retained on a surface, and an elastic layer that is stacked on the abrasive retaining layer and is configured to press the abrasive retained in the abrasive retaining layer against the workpiece. The elastic layer is preferably elastically deformable over a sliding stroke of the polishing tool, and a driving unit that causes the polishing tool to slide on the workpiece is preferably connected to the polishing tool.
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公开(公告)号：US20240110637A1
公开(公告)日：2024-04-04
申请号：US18464571
申请日：2023-09-11
发明人： Makio Morimoto
摘要： A valve device includes a valve rod connecting a valve main body and a piston and capable of advancing and retracting in a first direction integrally with the valve main body and the piston, a rotary sleeve rotatably supported on a valve casing in a first circumferential direction around a first center axis, an operation member configured to rotate an operation shaft in a second circumferential direction, an advancing and retracting sleeve immovably fixed to the valve rod and the piston, and a stopper member configured to restrict an amount of movement of the advancing and retracting sleeve toward a first side in the first direction. The operation shaft is connected to the rotary sleeve such that a rotation of the operation shaft in the second circumferential direction can be converted into a rotation in the first circumferential direction and transmitted to the rotary sleeve. The advancing and retracting sleeve is movable in the first direction when the rotary sleeve rotates in the first circumferential direction. The stopper member is capable of coming into contact with the advancing and retracting sleeve when the advancing and retracting sleeve moves toward the first side in the first direction by a specified value.
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公开(公告)号：US11926010B2
公开(公告)日：2024-03-12
申请号：US17820104
申请日：2022-08-16
发明人： Yoshiki Tazawa , Masaki Shiwaki
摘要： A processing apparatus includes: an apparatus main body including a base portion that is movable and a liquid supply unit that supplies a liquid to the base portion; a chuck portion connected to the base portion and including an attachment hole that is open outward; and a processing tool detachably mounted on the chuck portion. The processing tool includes a cylinder fitted into and held by the attachment hole, a drive unit disposed inside the cylinder and including a rotating body to be rotated around a central axis by the liquid introduced from the liquid supply unit via the base portion, a rotary shaft protruding outward from an inside of the cylinder along the central axis to rotate integrally with the rotating body, and a tool portion connected to a tip of the rotary shaft.
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公开(公告)号：US11788536B2
公开(公告)日：2023-10-17
申请号：US17655259
申请日：2022-03-17
发明人： Miku Kuroda
CPC分类号： F04D17/10 , F04D29/284 , F04D29/444
摘要： A centrifugal compressor includes: an impeller which is allowed to rotate around an axis; a casing in which the impeller is accommodated and a guide flow path guiding fluid to the impeller is formed; and a guide vane which is disposed in the guide flow path and is extended from a hub side wall surface of the guide flow path, which is continued to a hub side of the impeller, to a shroud side wall surface of the guide flow path to a shroud side of the impeller, wherein the guide vane is twisted forward the impeller in a rotating direction thereof as close to the shroud side wall surface from the hub side wall surface.
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公开(公告)号：US20230304532A1
公开(公告)日：2023-09-28
申请号：US18179612
申请日：2023-03-07
IPC分类号： F16C17/03
CPC分类号： F16C17/03 , F16C2360/23
摘要： A tilting pad bearing includes a plurality of pads slidably supporting an outside surface of a rotor shaft, a housing covering the plurality of pads, a support portion swingably supporting the pad with respect to the housing, and a fluid supply unit configured to supply a fluid to a pad surface.
The support portion includes a pivot having a pad support surface in contact with a pad outside surface and a pivot curved surface curved facing and protruding toward a side opposite to the pad support surface, a liner having a first liner surface in contact with the pivot curved surface, and a biasing member biasing the liner toward the pivot with respect to the housing.-
公开(公告)号：US20230235677A1
公开(公告)日：2023-07-27
申请号：US18158043
申请日：2023-01-23
发明人： Katsumi Terada , Yuzo Tsurusaki
IPC分类号： F01D9/04
CPC分类号： F01D9/044 , F05D2220/31 , F05D2230/60 , F05D2230/70 , F05D2240/128
摘要： A nozzle module includes a nozzle body having a blade shape in a cross section and extending in a radial direction, and a platform member integrally connected to each end portion of the nozzle body in the radial direction. The platform member includes a first portion formed on a first side in an axial direction in which a central axis extends, and having a pair of first side surfaces extending in the axial direction, when viewed in the radial direction, and a second portion formed to extend to a second side in the axial direction with respect to the first portion, and having a second side surface extending obliquely with respect to the first side surface, when viewed in the radial direction.
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公开(公告)号：US11656026B2
公开(公告)日：2023-05-23
申请号：US16838416
申请日：2020-04-02
发明人： Naoto Yonemura , Hiroyuki Miyata , Hideki Nagao
CPC分类号： F25J1/0027 , F04D17/12 , F25J3/0266 , F25J3/067 , F25J2215/04 , F25J2230/04 , F25J2230/20 , F25J2230/80 , F25J2235/80 , F25J2270/02 , F25J2270/80 , Y02C20/40
摘要： A compressing system includes a compression section that compresses a target gas to an intermediate pressure, which is equal to or higher than a critical pressure and lower than a target pressure to generate an intermediate supercritical fluid, a cooling section that cools the intermediate supercritical fluid generated in the compression section to near a critical temperature to generate an intermediate supercritical pressure liquid, and a pumping section that compresses the intermediate supercritical pressure liquid generated in the cooling section to a pressure that is equal to or higher than the target pressure. At least one of the intermediate supercritical pressure liquid compressed in the pumping section, a low-temperature liquid generated by extracting the intermediate supercritical pressure liquid on the upstream side of the pumping section to reduce pressure to near the critical pressure, and an external cooling medium is used as a cooling medium in the cooling section.
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