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公开(公告)号：US11215222B2
公开(公告)日：2022-01-04
申请号：US16625314
申请日：2019-02-04
发明人： Takaya Futae , Naoyuki Nagai , Shinji Ogawa , Taiyo Shirakawa
摘要： A turbocharger includes a rotor shaft that is rotationally driven, a compressor impeller attached to the rotor shaft, and a cylindrical bearing portion that includes an inner cylinder and an outer cylinder, and that supports the rotor shaft in a rotatable manner. A first damping portion is provided between an axial first end portion of the inner cylinder and an axial first end portion of the outer cylinder, and an axial second end portion of the inner cylinder is connected with an axial second end portion of the outer cylinder. A second damping portion is provided between a housing and the axial second end portion. The housing and the bearing portion are fixed by a flange portion provided at the first end portion of the outer cylinder in such a manner as to restrict movement of the flange portion in a radial direction and in an axial direction.
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2.发明授权公开(公告)号：US10648477B2
公开(公告)日：2020-05-12
申请号：US15533980
申请日：2015-10-06
发明人： Tadashi Yoshida , Shinji Ogawa , Koichi Sakamoto , Yukihiro Iwasa
摘要： A state observation device (30) uses an ADC (37) to digitize a detection signal from a gap sensor (21) at a low-speed sampling period and uses a separation unit (38) to separate the digitized detection signal into vane detection signals considered to be for the detection of a vane of a compressor impeller and non-vane detection signals considered not to be for the detection of a vane. Further, the determination unit (39) extracts a vane peak detection signal considered to be for a vane peak by comparing a vane detection signal with vane detection signals corresponding to other vanes and non-vane detection signals, and a shaft vibration and tip clearance are determined as states of the compressor impeller on the basis of the extracted vane peak detection signal. Thus, the state observation device (30) is capable of observing the state of a rotary machine without carrying out high-speed sampling.
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公开(公告)号：US09885384B2
公开(公告)日：2018-02-06
申请号：US14650811
申请日：2012-12-19
发明人： Takaya Futae , Hiroshi Kanki , Noriyuki Hayashi , Hideaki Nishida , Shinji Ogawa , Chiaki Yasuda , Yutaka Ozawa
IPC分类号： F04D29/046 , F16C17/02 , F16C33/10 , F04D29/056 , F04D29/053 , F04D17/10 , F04D29/28 , F01D25/16 , F01D25/18 , F16C17/18
CPC分类号： F16C17/028 , F01D25/166 , F01D25/186 , F04D17/10 , F04D29/053 , F04D29/056 , F04D29/284 , F05D2260/98 , F16C17/18 , F16C33/1045 , F16C33/1075 , F16C33/1085 , F16C2360/24 , F16C2360/44
摘要： An object is to provide a floating bush bearing device with excellent oscillation stability and small bearing loss. A floating bush bearing device which rotatably supports a rotation shaft includes: a bearing housing, a floating bush rotatably disposed between the rotation shaft and an inner circumferential surface of the bearing housing, in the bearing housing, and a bush side oil supply hole which is formed through the floating bush and is capable of supplying lubricating oil between the rotation shaft and the inner circumferential surface of the floating bush, the inner circumferential surface of the floating bush has a non-circular shape so that a gap portion is formed between the rotation shaft and the inner circumferential surface of the floating bush, the gap portion having a predetermined clearance or larger regardless of relative positions of the rotation shaft and the inner circumferential surface of the floating bush, and the bush side oil supply hole communicates with the gap portion.
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4.发明申请公开(公告)号：US20170342993A1
公开(公告)日：2017-11-30
申请号：US15533980
申请日：2015-10-06
发明人： Tadashi Yoshida , Shinji Ogawa , Koichi Sakamoto , Yukihiro Iwasa
CPC分类号： F04D27/001 , F02B33/40 , F02B37/00 , F02C7/00 , F04D29/284 , F04D29/4206 , G01B7/14 , G01M99/00 , Y02T10/144
摘要： A state observation device (30) uses an ADC (37) to digitize a detection signal from a gap sensor (21) at a low-speed sampling period and uses a separation unit (38) to separate the digitized detection signal into vane detection signals considered to be for the detection of a vane of a compressor impeller and non-vane detection signals considered not to be for the detection of a vane. Further, the determination unit (39) extracts a vane peak detection signal considered to be for a vane peak by comparing a vane detection signal with vane detection signals corresponding to other vanes and non-vane detection signals, and a shaft vibration and tip clearance are determined as states of the compressor impeller on the basis of the extracted vane peak detection signal. Thus, the state observation device (30) is capable of observing the state of a rotary machine without carrying out high-speed sampling.
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公开(公告)号：US20210332846A1
公开(公告)日：2021-10-28
申请号：US16625314
申请日：2019-02-04
发明人： Takaya Futae , Naoyuki Nagai , Shinji Ogawa , Taiyo Shirakawa
摘要： A turbocharger includes a rotor shaft that is rotationally driven, a compressor impeller attached to the rotor shaft, and a cylindrical bearing portion that includes an inner cylinder and an outer cylinder, and that supports the rotor shaft in a rotatable manner. A first damping portion is provided between an axial first end portion of the inner cylinder and an axial first end portion of the outer cylinder, and an axial second end portion of the inner cylinder is connected with an axial second end portion of the outer cylinder. A second damping portion is provided between a housing and the axial second end portion. The housing and the bearing portion are fixed by a flange portion provided at the first end portion of the outer cylinder in such a manner as to restrict movement of the flange portion in a radial direction and in an axial direction.
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