公开(公告)号：US11808279B1

公开(公告)日：2023-11-07

申请号：US17955256

申请日：2022-09-28

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Kuuma Okada ,  Hideki Fujiwara

IPC分类号： F04D29/058 ,  F04D29/62 ,  F04D29/051 ,  F16C32/04

CPC分类号： F04D29/058 ,  F04D29/051 ,  F04D29/624 ,  F16C32/044 ,  F16C32/0406

摘要： A centrifugal compressor includes a tubular shape casing extending in an axial direction, a motor stator fixed to an inside of the casing in a radial direction, a shaft disposed inside of the motor stator in the radial direction and extending in the axial direction, a motor rotor fixed to the shaft and facing the motor stator with a gap in the radial direction, a compression unit fixed to an end portion of the shaft on one side in the axial direction, a first thrust magnetic bearing disposed between the motor rotor and the impeller in the axial direction, and a second thrust magnetic bearing disposed on an other side in the axial direction relative to the motor rotor. A magnetic attraction force of the second thrust magnetic bearing toward the other side is larger than a magnetic attraction force of the first thrust magnetic bearing toward the one side.

公开(公告)号：US11774146B2

公开(公告)日：2023-10-03

申请号：US16982934

申请日：2019-03-19

申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

发明人： Yasushi Hasegawa ,  Kenji Ueda ,  Shintaro Omura

IPC分类号： F25B1/053 ,  F04D29/058 ,  F25B9/06

CPC分类号： F25B1/053 ,  F04D29/058 ,  F25B9/06

摘要： Provided are a turbo compressor and a centrifugal chiller comprising the same with which the length of a shaft in an axial direction can be shortened, rotational shake accompanying rotation of the shaft is suppressed, and a device can be made small. A turbo compressor comprising: a compressor part which compresses refrigerant; a shaft (15) which drives the compressor part around an axis of rotation X; a magnetic bearing (30A) which has provided thereto an iron core part (32) comprising a plurality of teeth parts (34) formed at equiangular intervals around the axis of rotation X, and, a plurality of coils (36) respectively wound around the plurality of teeth parts (34), and said magnetic bearing (30A) allows the shaft (15) to pass through and supports said shaft (15) without contacting the same; an auxiliary bearing which allows the shaft (15) to pass through; and a displacement sensor (50) which detects displacement of the shaft (15), wherein the displacement sensor (50) is provided between neighboring coils (36).

公开(公告)号：US11686319B2

公开(公告)日：2023-06-27

申请号：US16673896

申请日：2019-11-04

申请人： Upwing Energy, Inc.

发明人： Alexei Filatov ,  Larry Hawkins

IPC分类号： F04D29/058 ,  F04D19/02 ,  F04D25/06 ,  H02K7/09 ,  F04D13/10 ,  F04D17/12 ,  E21B43/16 ,  H02K5/132 ,  H02K7/14 ,  E21B43/12 ,  F04D29/66 ,  F04D13/04 ,  F04D13/08

CPC分类号： F04D29/058 ,  E21B43/122 ,  E21B43/128 ,  E21B43/16 ,  F04D13/10 ,  F04D17/12 ,  F04D19/02 ,  F04D25/06 ,  F04D25/0606 ,  F04D25/0686 ,  F04D29/668 ,  H02K5/132 ,  H02K7/09 ,  H02K7/14 ,  F04D13/04 ,  F04D13/086 ,  F04D25/062

摘要： A blower can be positioned in a wellbore. The blower rotatably drives or is driven by a fluid produced through the well bore. An electric machine can be positioned downhole of the blower, the electric machine configured to rotatably drive or be driven by the blower. A bearing shaft couples the blower and the electric machine. The bearing shaft transfers rotation between the blower and the electric machine. A passive magnetic radial bearing assembly magnetically supports the bearing shaft.

公开(公告)号：US20190234417A1

公开(公告)日：2019-08-01

申请号：US16331143

申请日：2017-09-18

申请人： NEW MOTECH CO., LTD.

发明人： Jeong Cheol JANG ,  Ji Min LEE ,  Seong Jin LEE

IPC分类号： F04D29/20 ,  F04D29/044 ,  F04D29/058 ,  F04D13/02 ,  F04D13/06

CPC分类号： F04D29/20 ,  F01P5/10 ,  F04D13/021 ,  F04D13/06 ,  F04D13/064 ,  F04D29/04 ,  F04D29/044 ,  F04D29/058 ,  F04D29/2222 ,  F04D29/426 ,  F04D29/605 ,  F04D29/628

摘要： A water pump includes: an upper housing formed with an inlet and an outlet of fluid; a lower housing installed to fit in a lower side of the upper housing, having a receiving space formed therein; a shaft fixing support having a lower part of a protrudedly formed shaft inserted in the center of a bottom part of the lower housing; an impeller installed around the shaft; a rotor configured by having a magnet installed around a rotor core; a stator installed inside the lower housing; a lower cover; a shaft upper part fixing support member installed in an upper side of the shaft erectedly inserted in the shaft fixing support; and a synthetic resin mold member formed with a first synthetic resin mold around an outer side of the shaft fixing support and around the shaft, and a second synthetic resin mold around an outer side of the rotor.

公开(公告)号：US20190211834A1

公开(公告)日：2019-07-11

申请号：US16095112

申请日：2017-04-18

申请人： MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.

发明人： Yasushi HASEGAWA ,  Shintaro OMURA

IPC分类号： F04D29/063 ,  F04D17/10 ,  F04D25/06 ,  F04D29/059 ,  F25B1/053 ,  F25B31/00

CPC分类号： F04D29/063 ,  F04D17/10 ,  F04D25/06 ,  F04D29/056 ,  F04D29/058 ,  F04D29/059 ,  F04D29/58 ,  F25B1/053 ,  F25B31/002

摘要： To realize a reduction in cost and extension of the lifespan of a auxiliary bearing which is disposed adjacent to a non-contact bearing supporting a rotor shaft of a centrifugal compressor. A centrifugal compressor (2) includes: a rotor shaft (15); an electric motor (14) provided at an intermediate portion of the rotor shaft (15) in a coaxial manner with the rotor shaft (15), the electric motor (14) being configured to rotationally drive the rotor shaft (15); an impeller (16) fixed to one end of the rotor shaft (15) and forming a refrigerant compressing unit (7) which compresses a refrigerant; main bearings (18a, 18b) formed of non-contact bearings pivotally supporting the rotor shaft (15) at a portion between the electric motor (14) and the impeller (16), and at another end of the rotor shaft (15); auxiliary bearings (19a, 19b) disposed adjacent to the main bearings (18a, 18b), the auxiliary bearings being configured to pivotally support the rotor shaft (15) in place of the main bearings (18a, 18b) in a state where functioning of the main bearings (18a, 18b) stops; and a lubricating refrigerant supply unit (25) configured to supply the refrigerant as a lubricant to an inside of the auxiliary bearings (19a, 19b) in the state where the functioning of the main bearings (18a, 18b) stops.

公开(公告)号：US20180274548A1

公开(公告)日：2018-09-27

申请号：US15762951

申请日：2016-09-28

申请人： THERMODYN SAS

发明人： Yoann VIDALENC ,  Thomas ALBAN

IPC分类号： F04D29/051 ,  F04D29/02 ,  F04D27/00 ,  F16C17/04 ,  F16C23/02 ,  F16C27/08 ,  F16C32/04 ,  F16C33/04 ,  F16C33/26 ,  F16C39/02

CPC分类号： F04D29/051 ,  F01D25/168 ,  F04D27/001 ,  F04D29/023 ,  F04D29/0513 ,  F04D29/058 ,  F16C17/04 ,  F16C23/02 ,  F16C27/08 ,  F16C32/0442 ,  F16C33/043 ,  F16C33/26 ,  F16C39/02 ,  F16C2360/44

摘要： An auxiliary turbomachinery shaft-support system including a first assembly configured to axially support the shaft, the first assembly including a rotating disc having a part shaped to be torsionally coupled to the shaft, and a stator including at least one pad including at least one elastic component coupled with the pads and urging it in the direction of a disc sliding surface.

公开(公告)号：US09989063B2

公开(公告)日：2018-06-05

申请号：US15335621

申请日：2016-10-27

申请人： Shimadzu Corporation

发明人： Nobuhiko Moriyama

IPC分类号： G01R19/00 ,  F04D27/00 ,  F04D17/16 ,  F04D25/06 ,  F04D29/058 ,  G01R22/10 ,  F04D19/04

CPC分类号： F04D27/001 ,  F04D17/168 ,  F04D19/042 ,  F04D25/06 ,  F04D29/058 ,  G01R22/10

摘要： A monitoring device for monitoring power consumption of a magnetic bearing vacuum pump rotatably driven by a motor and configured such that a rotor is magnetically levitated and supported by a magnetic bearing, comprises: a calculator configured to calculate the power consumption of the magnetic bearing vacuum pump, the power consumption of the magnetic bearing vacuum pump being obtained by adding power consumption of the motor based on a motor rotational speed and a motor current value and power consumption of the magnetic bearing together; and a display controller configured to display, on a display device, the power consumption of the magnetic bearing vacuum pump calculated by the calculator.

公开(公告)号：US09970449B2

公开(公告)日：2018-05-15

申请号：US15034179

申请日：2014-10-09

申请人： MAYEKAWA MFG. CO., LTD.

发明人： Shota Ueda ,  Akito Machida ,  Mizuo Kudo

IPC分类号： F25B1/00 ,  F04D29/058 ,  F25B11/02 ,  F25B9/00 ,  F25B49/02 ,  F04D25/06 ,  F04D29/051 ,  F01D5/04 ,  F04D25/02 ,  F04D29/053 ,  F04D29/08 ,  F04D29/28 ,  F25B9/06 ,  F04D29/58 ,  F25B31/00 ,  F25B40/00

CPC分类号： F04D29/058 ,  F01D5/04 ,  F04D25/02 ,  F04D25/024 ,  F04D25/06 ,  F04D29/051 ,  F04D29/053 ,  F04D29/083 ,  F04D29/284 ,  F04D29/5806 ,  F05D2210/14 ,  F25B9/002 ,  F25B9/06 ,  F25B11/02 ,  F25B31/006 ,  F25B40/00 ,  F25B49/02 ,  F25B2400/0751 ,  F25B2400/14 ,  F25B2500/22 ,  F25B2600/0261 ,  F25B2600/2515 ,  F25B2700/151 ,  F25B2700/21 ,  F25B2700/21163

摘要： An expander-integrated compressor is provided and includes: a motor; a compressor connected to an output shaft of the motor; an expander connected to the output shaft of the motor; a non-contact bearing disposed between the compressor and the expander; a casing; and an extraction line being in communicated with a region between the compressor and the expander in the internal space of the casing and extracts, from the region, the leakage fluid from the compressor side toward the expander side in the casing and to send the leakage fluid to a fluid line connected to the intake side or the discharge side of the compressor outside the casing. The casing seals the region from outside of the casing, thus the flow of the at least a part of the leakage fluid through the extraction line is the only flow of fluid between the region and the outside of the casing.

公开(公告)号：US20180073779A1

公开(公告)日：2018-03-15

申请号：US15266403

申请日：2016-09-15

申请人： Daikin Applied Americas Inc.

发明人： Phillip A. Johnson ,  Fumiaki Onodera ,  Tsuyoshi Ueda

IPC分类号： F25B1/053 ,  F04D17/12 ,  F04D23/00 ,  F04D25/06 ,  F04D27/00 ,  F04D29/051 ,  F04D29/058 ,  F04D29/28 ,  F04D29/44

CPC分类号： F25B1/053 ,  F04D17/12 ,  F04D23/003 ,  F04D25/06 ,  F04D25/16 ,  F04D27/004 ,  F04D29/051 ,  F04D29/058 ,  F04D29/286 ,  F04D29/444

摘要： A centrifugal compressor includes a casing, a first compression mechanism and a second compression mechanism. The casing has a first inlet portion, a first outlet portion, a second inlet portion and a second outlet portion. The first compression mechanism includes a first inlet guide vane disposed in the first inlet portion, a first impeller disposed downstream of the first inlet guide vane, a first diffuser disposed in the first outlet portion downstream from the first impeller, and a first motor. The second compression mechanism includes a second inlet guide vane disposed in the second inlet portion, a second impeller disposed downstream of the second inlet guide vane, a second diffuser disposed in the second outlet portion downstream from the second impeller, and a second motor. The first and second motors are arranged to rotate first and second shafts in order to rotate the first and second impellers.

公开(公告)号：US20170346356A1

公开(公告)日：2017-11-30

申请号：US15392155

申请日：2016-12-28

申请人： Shimadzu Corporation

发明人： Taiki NISHIMURA ,  Koichi SHIMIZU ,  Osamu ASHIDA

IPC分类号： H02K1/30 ,  H02K1/27 ,  F04D29/053 ,  F04D25/06 ,  F04D29/26 ,  H02K7/09 ,  F16C32/04

CPC分类号： H02K1/30 ,  F04D19/042 ,  F04D19/048 ,  F04D25/06 ,  F04D25/0606 ,  F04D29/053 ,  F04D29/058 ,  F04D29/26 ,  F16C19/527 ,  F16C32/0402 ,  F16C32/0425 ,  F16C32/0431 ,  F16C2240/60 ,  F16C2360/45 ,  H02K1/272 ,  H02K1/2733 ,  H02K1/28 ,  H02K7/09

摘要： A vacuum pump for rotary driving a rotor by a motor to perform vacuum pumping, wherein a motor rotor of the motor includes a yoke fixed to a shaft of the rotor, and a permanent magnet held at the yoke, and the yoke includes a holding portion provided apart from the shaft and configured to hold the permanent magnet, and a pair of fitting portions provided respectively at both ends of the holding portion in an axial direction and bonded to the shaft by fitting, and a radial thickness dimension of each fitting portion is set less than that of the holding portion.