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公开(公告)号：US20220203480A1
公开(公告)日：2022-06-30
申请号：US17607131
申请日：2019-07-31
发明人： Kazuhiro YOSHIDA , Yoshinao KOMATSU , Saneyuki GOYA , Akiko INOUE , Yasuyuki FUJIYA , Ryuichi NARITA , Masahiko SHIMIZU
IPC分类号： B23K26/364 , B23K26/142 , B23K26/14
摘要： This laser processing device is provided with a laser radiating unit which forms a processed groove extending in a scanning direction on a workpiece, by subjecting the workpiece to laser processing while scanning the surface of the workpiece, and a nozzle portion which has a plurality of ejection holes arranged side by side in the scanning direction, and which ejects a gas toward the processed groove from each of the ejection holes. With this laser processing device, since a plume is eliminated by ejecting gas into the processed groove by means of the nozzle portion, the formation of a heat affected layer by the plume can be suppressed to an even greater extent.
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公开(公告)号：US20210060706A1
公开(公告)日：2021-03-04
申请号：US16788957
申请日：2020-02-12
发明人： Kazuhiro YOSHIDA , Yoshinao KOMATSU , Saneyuki GOYA , Akiko INOUE , Yasuyuki FUJIYA , Ryuichi NARITA
摘要： A laser processing device of the present invention includes a laser radiation unit which is configured to perform laser processing on a workpiece while scanning a work surface from an end portion of the workpiece to form a processing groove of which one end is open at the end portion of the workpiece and the other end is closed; and a nozzle unit which is configured to inject a gas along the surface of the workpiece such that a flow velocity thereof increases from the one end of the processing groove toward the other end.
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公开(公告)号：US20210087668A1
公开(公告)日：2021-03-25
申请号：US16634645
申请日：2018-09-25
发明人： Kazuhiro YOSHIDA , Shinji FUKAO , Kei HIGASHI , Shuji TANIGAWA , Takumi BONO
IPC分类号： C23C4/134
摘要： A plasma thermal spray device includes a nozzle body (41) having a main flow passage (48) that has a plasma flame (37) formed therein in a direction toward a downstream side from an upstream end (41A) disposed on one side in an axis direction, and extending along an axis (Ax); a powder introduction port (43) that is provided in a portion of the nozzle body (41) located the downstream side from the upstream end (41A) and introduces thermal spray powder (36) from a radially outer side to the plasma flame (37); and a fluid introduction port (45) that is provided at a position closer to the downstream side than a formation position of the powder introduction port (43) in the nozzle body (41) and introduces a working fluid into the main flow passage (48) from the radially outer side of the nozzle body (41).
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公开(公告)号：US20220168848A1
公开(公告)日：2022-06-02
申请号：US17437941
申请日：2019-06-28
发明人： Kazuhiro YOSHIDA , Yoshinao KOMATSU , Saneyuki GOYA , Akiko INOUE , Yasuyuki FUJIYA , Ryuichi NARITA , Masahiko SHIMIZU , Ryota OZAKI , Yuki KANI
IPC分类号： B23K26/364 , B23K26/14 , B23K26/142
摘要： A laser machining device includes: a laser irradiation unit that forms a machining groove that has one end opening to an end section of a workpiece and the other end thereof closed, as a result of scanning a workpiece surface from an end section of the workpiece and laser machining the workpiece; and a nozzle unit that sprays a gas across an irradiation zone of the workpiece surface created by the laser irradiation unit. The nozzle unit is configured so as to increase the flowrate of the gas supplied to the irradiation zone, from one end to the other end of the machining groove.
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公开(公告)号：US20230360812A1
公开(公告)日：2023-11-09
申请号：US18028591
申请日：2021-09-21
发明人： Yasutaka HARAI , Satoru KAMOHARA , Tadakatsu YODO , Shota KOBAYASHI , Shohei OTSUKI , Nozomu MURAKAMI , Wataru NAKAZATO , Takashi HASEGAWA , Yutaka TANAKA , Tatsuo ISHIGURO , Hironori NOGUCHI , Hideyuki KUDO , Takafumi NODA , Kazuhiro YOSHIDA
IPC分类号： G21C15/18
CPC分类号： G21C15/18
摘要： Provided is a nuclear reactor unit that can reduce a temperature increase in a reactor core at the occurrence of an abnormality with a simple structure. Included are a reactor core having radioactive fuel and causing the radioactive fuel to cause a nuclear reaction and a nuclear reactor vessel housing the reactor core and hermetically sealing the reactor core. The nuclear reactor vessel includes an inner shroud covering the entire periphery of the reactor core and an outer shroud covering the entire periphery of the inner shroud. A first space formed by the outer shroud and the inner shroud is in a vacuum condition. The inner shroud includes a main body and a communicating part placed in part of the main body and communicating the first space to a second space, which is a space inside the inner shroud, when the reactor core reaches a threshold temperature or higher.
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公开(公告)号：US20210276132A1
公开(公告)日：2021-09-09
申请号：US17158264
申请日：2021-01-26
发明人： Yoshinao KOMATSU , Kazuhiro YOSHIDA , Saneyuki GOYA , Akiko INOUE , Yasuyuki FUJIYA , Ryuichi NARITA
IPC分类号： B23K26/38 , B23K26/142 , B23K26/16 , B23K26/70
摘要： A laser processing device includes a laser irradiation unit that performs processing on a workpiece by using a laser while scanning a workpiece surface to form a kerf, jet nozzles that respectively form jet flows flowing toward a bottom surface of the kerf on front and rear sides in a scanning direction of the laser, and an intake part that sucks, above injection ports of the jet nozzles, a gas in a region surrounded by the jet flows from the front and rear sides. In a state in which a certain region of the kerf is isolated by the jet flows, the gas is sucked from this region by the intake part. As a result, a suction force by the intake part can reach the bottom surface of the kerf.
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