公开(公告)号：US10808711B2

公开(公告)日：2020-10-20

申请号：US15684557

申请日：2017-08-23

申请人： LG ELECTRONICS INC.

发明人： Namsoo Lee ,  Solji Ryu ,  Kiwook Lee ,  Seongmin Jang

IPC分类号： F25B49/02 ,  F04D27/00 ,  F04D29/053 ,  F04D29/058 ,  F04D29/28 ,  F25B31/02 ,  G01B7/14 ,  F25B1/053 ,  F25B39/00

摘要： The present invention provides a compressor that includes: one or more impellers that axially suck and centrifugally compress a refrigerant; a rotary shaft that is connected with the impeller and a motor for rotating the impeller; a plurality of magnetic bearings that supports the rotary shaft in the air so that the rotary shaft can rotate; a gap sensor that senses the distance from the rotary shaft; and a controller that determines abnormal wire connection of the magnetic bearings on the basis of information from the gap sensor. The controller can sense movement of the rotary shaft through the gap sensor while controlling the amount of current supplied to any one of the magnetic bearings and can determine whether there is abnormal wire connection on the basis of the information.

公开(公告)号：US10808624B2

公开(公告)日：2020-10-20

申请号：US15428572

申请日：2017-02-09

申请人： PRATT & WHITNEY CANADA CORP.

发明人： Jean Dubreuil ,  Ghislain Plante ,  Philippe Beauchesne-Martel

IPC分类号： F02C7/32 ,  B64D27/10 ,  F02C3/107 ,  F02C7/36 ,  F01D15/10 ,  F01D15/12 ,  F04D29/32 ,  F04D29/053 ,  F02C3/10 ,  F02C6/20 ,  F01D15/00 ,  F02C3/14

摘要： A method and a turbine rotor system for reducing over-speed potential of a turbine of a gas turbine engine involve mechanically connecting the turbine to at least two mechanical loads via first and second mechanical drives extending in opposite directions from the turbine.

公开(公告)号：US20200325906A1

公开(公告)日：2020-10-15

申请号：US16094585

申请日：2017-01-16

申请人： Nuovo Pignone Tecnologie S.r.l.

发明人： Giuseppe IURISCI ,  Lorenzo NALDI ,  Pradeep Kumar DIDDI

IPC分类号： F04D29/054 ,  F04D29/051 ,  F04D29/053 ,  F16D1/076 ,  F04D25/02

摘要： A rotary machine is disclosed, which includes a rotary shaft having a rotation axis, a first shaft end, and a second shaft end; a first bearing arrangement at the first shaft end; a second bearing arrangement at the second shaft end; a coupling flange mechanically connected to the first shaft end. The coupling flange is mechanically connected to the first shaft end by means of a first axial-contact coupling.

公开(公告)号：US20200318648A1

公开(公告)日：2020-10-08

申请号：US16376925

申请日：2019-04-05

申请人： RITE-HITE HOLDING CORPORATION

发明人： Aaron J. Wiegel ,  David Swift ,  Jason Dondlinger ,  Lucas I. Paruch ,  Ronald P. Snyder

IPC分类号： F04D29/34 ,  F04D19/00 ,  F04D29/053 ,  F04D29/26 ,  F04D25/08

摘要： Example axial fans (overhead fans) include a set of radially extending spokes that connect a set of fan blades to a motor-driven hub. Each spoke has at least one notch, so the spokes can be assembled in interlocking relationship with each other, such that the spokes extend at different rotational angles from the rotational axis of the hub but lie in substantially the same horizontal plane. Such an arrangement enables the spokes to support the cantilevered weight and other vertical loads exerted by the fan blades while providing a compact assembly. In some examples, a retainer extends through aligned bores of several components of the fan along the axis of rotation.

公开(公告)号：US10731657B2

公开(公告)日：2020-08-04

申请号：US15261795

申请日：2016-09-09

申请人： SHINANO KENSHI CO., LTD.

发明人： Hiroki Kosaka

IPC分类号： F04D29/056 ,  F04D29/051 ,  F04D29/053 ,  F04D25/06 ,  F04D29/28 ,  F04D29/42

摘要： A drive device includes: a board including an opening; and a motor including: a rotational shaft; a housing supporting the rotational shaft for rotation, fixed to the board so as to surround the opening, and having a cylindrical shape; a bearing supporting the rotational shaft for rotation and press-fitted onto an inner peripheral surface of the housing; and a thrust cover supporting an end of the rotational shaft and fixed onto the inner peripheral surface of the housing by an adhesive.

公开(公告)号：US20200232342A1

公开(公告)日：2020-07-23

申请号：US16667154

申请日：2019-10-29

申请人： United Technologies Corporation

发明人： Michael E. McCune ,  Jason Husband

IPC分类号： F01D25/16 ,  F02C7/32 ,  F02C7/36 ,  F01D15/12 ,  F01D25/28 ,  F01D5/06 ,  F01D9/02 ,  F02K3/06 ,  F04D25/04 ,  F04D29/053 ,  F04D29/32 ,  F04D19/02 ,  F04D29/056

摘要： A gas turbine engine includes a fan shaft that drives a fan that has fan blades. An outer housing surrounds the fan. A bypass flow path is within the outer housing. A fan shaft support that supports the fan shaft defines a fan shaft support transverse stiffness. A gear system is connected to the fan shaft. The gear system includes a gear mesh that defines a gear mesh transverse stiffness. A flexible support which supports the gear system relative to a static structure defines a flexible support transverse stiffness. The flexible support transverse stiffness is less than 11% of the fan shaft support transverse stiffness. The flexible support transverse stiffness is less than 8% of the gear mesh transverse stiffness.

公开(公告)号：US10707725B2

公开(公告)日：2020-07-07

申请号：US15724952

申请日：2017-10-04

申请人： SHINANO KENSHI KABUSHIKI KAISHA

发明人： Makoto Wanezaki

IPC分类号： H02K9/06 ,  H02K11/33 ,  F04D25/06 ,  F04D29/053 ,  F04D29/28 ,  H02K1/14 ,  H02K1/27 ,  H02K5/20 ,  H02K7/14 ,  H02K21/22 ,  H02K1/32

摘要： To providing a blower that can efficiently cool a plurality of motor coils, which is a large heating source of a blushless motor, by directly blowing and circulating a part of blown air generated by the rotation of an impeller to the motor coils through an air blowing channel. When a motor is started, brown air is obtained from an air blowing port provided in a part of a flange portion so as to be opened to a blower case, directly blown to the motor coils formed around pole teeth of a stator core via an air blowing channel communicating with the air blowing port to cool the motor coils, and circulated to an impeller to perform radiation.

公开(公告)号：US20200158226A1

公开(公告)日：2020-05-21

申请号：US16747934

申请日：2020-01-21

申请人： United Technologies Corporation

发明人： Michael E. McCune ,  Jason Husband

IPC分类号： F16H57/028 ,  F16H1/28 ,  F04D29/056 ,  F04D29/053 ,  F04D25/02 ,  F02K3/06 ,  F01D25/16 ,  F02C7/36

摘要： A geared architecture for a gas turbine engine includes a fan shaft driving a fan surrounded by an outer housing. A frame that supports the fan shaft and defines a frame lateral stiffness. A plurality of gears are in driving engagement with the fan shaft. The plurality of gears provide an epicyclic gear system which includes a gear mesh defining a gear mesh lateral stiffness and a ring gear defining a ring gear lateral stiffness. The ring gear lateral stiffness is less than 12% of the gear mesh lateral stiffness. A flexible support supports the epicyclic gear system relative to a static structure and defines a flexible support lateral stiffness and a flexible support transverse stiffness. An input coupling to the plurality of gears defines an input coupling lateral stiffness. The flexible support lateral stiffness and the input coupling lateral stiffness are each less than about 11% of said frame lateral stiffness.

公开(公告)号：US10655640B1

公开(公告)日：2020-05-19

申请号：US14863085

申请日：2015-09-23

申请人： LTI Holdings, Inc.

发明人： Roger Dickinson ,  John O'Connor

IPC分类号： F04D29/66 ,  F04D17/08 ,  F04D25/06 ,  F04D29/28 ,  F04D29/42 ,  F04D29/053 ,  F04D29/056 ,  F04D17/10

摘要： A centrifugal blower apparatus includes a scroll-shaped housing with first and second air inlets which open to a blower chamber that is in fluid communication with an air outlet. The blower includes a motor to drive impellers, wherein the motor is secured to a frame coupled within the housing in a manner to substantially enhance aerodynamic performance of the blower.

公开(公告)号：US10563658B2

公开(公告)日：2020-02-18

申请号：US15859276

申请日：2017-12-29

申请人： Zhongshan Broad-Ocean Motor Co., Ltd.

发明人： Yanhu Lin ,  Weihao Wu ,  Haixiu Liao ,  Jianhui Li ,  Jian Lan ,  Huixiu Chen

IPC分类号： F04D17/16 ,  F04D29/70 ,  F04D29/053 ,  F04D29/16 ,  F04D29/28 ,  F04D29/42 ,  F04D29/62

摘要： A blower, including: a volute including air inlets and an air outlet; a wind wheel disposed in the volute; and air collectors. Each air collector includes a curved air guide. The air inlets are disposed at two sides of the wind wheel, respectively. The air collectors correspond to the air inlets. The curved air guide extends into the volute, and the inner diameter of the curved air guide decreases stepwise. The relationship between a minimum inner diameter D0 of the curved air guide and an inner diameter D1, an outer diameter D2 of the wind wheel fulfills the following formula: D1+⅓(D2−D1)≤D0≤D1+⅔(D2−D1). An exhaust fan that includes the blower is also provided.