公开(公告)号：US20240044338A1

公开(公告)日：2024-02-08

申请号：US18324247

申请日：2023-05-26

申请人： DENSO CORPORATION

发明人： Yuichi SEO ,  Yuuji HIDAKA

IPC分类号： F04D27/02 ,  H02P29/032

CPC分类号： F04D27/0261 ,  H02P29/032

摘要： A motor control device configured to control a motor that drives a fuel pump includes a sign detection unit and a vapor suppression unit. The sign detection unit is configured to detect a sign of a vapor lock that is an abnormality in which the fuel pump is unable to discharge a fuel due to a vapor inside the fuel pump. The vapor suppression unit is configured to change a rotation speed of the motor to reduce the vapor inside the fuel pump when the sign detection unit detects the sign of the vapor lock.

公开(公告)号：US11732942B2

公开(公告)日：2023-08-22

申请号：US16805365

申请日：2020-02-28

申请人： Johnson Controls Technology Company

发明人： Liming Yang ,  Thomas M. Seneczko ,  Curtis C. Crane ,  Justin P. Kauffman

IPC分类号： F25B49/02 ,  F24F11/64 ,  F04D27/02

CPC分类号： F25B49/022 ,  F04D27/0246 ,  F04D27/0261 ,  F04D27/0284 ,  F24F11/64 ,  F05B2270/404 ,  F05B2270/709 ,  F25B2500/06 ,  F25B2500/12 ,  F25B2600/0253

摘要： A method of operating a chiller includes applying chiller operating data associated with the chiller as an input to one or more machine learning models, generating a boundary for a controllable chiller variable based on an output of the one or more machine learning models, and affecting operation of the chiller based on the boundary.

公开(公告)号：US20230167824A1

公开(公告)日：2023-06-01

申请号：US17905998

申请日：2021-03-09

申请人： Atlas Copco Airpower N.V.

发明人： Simon Candries ,  Yun Shi

IPC分类号： F04C25/02 ,  F04B35/04 ,  F04B37/14 ,  F04B49/06 ,  F04C28/08 ,  F04D19/04 ,  F04D27/00 ,  F04D27/02

CPC分类号： F04C25/02 ,  F04B35/04 ,  F04B37/14 ,  F04B49/065 ,  F04C28/08 ,  F04D19/04 ,  F04D27/001 ,  F04D27/004 ,  F04D27/0261 ,  F04B2203/0209 ,  F04C2270/23 ,  F05D2270/3011

摘要： Repeated cycles each consist of a pump down phase and a holding phase, wherein a start timepoint of each cycle is the timepoint when a rise in an inlet pressure of the pump is sufficiently large and the time extending between two consecutive cycle start timepoints is a cycle time. A control method includes determining a start of a next cycle during a present cycle, wherein it is preferable that the present cycle directly precedes the next cycle. The method further includes controlling the pump to accelerate to a maximum allowed speed during the holding phase of the present cycle before the start of the next cycle such that at the start of the next cycle full pump capacity is available.

公开(公告)号：US20180363541A1

公开(公告)日：2018-12-20

申请号：US15781864

申请日：2016-03-08

申请人： MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.

发明人： Ryo SASE ,  Naoki YAHATA

IPC分类号： F02B37/16 ,  F04D27/02 ,  F04D27/00 ,  F02B37/18 ,  F02B37/24

CPC分类号： F02B37/16 ,  F02B37/12 ,  F02B37/18 ,  F02B37/22 ,  F02B37/24 ,  F02B39/16 ,  F02B2037/125 ,  F02D41/0007 ,  F02D2200/101 ,  F02D2200/602 ,  F04D27/001 ,  F04D27/0223 ,  F04D27/0246 ,  F04D27/0261 ,  Y02T10/144

摘要： A surge avoidance control method of avoiding surging in an exhaust turbocharger which comprises a turbine rotated by exhaust gas from an engine and a compressor rotatably driven by the turbine, by controlling an opening degree of an operation device capable of adjusting an operation point of the compressor between fully open and fully closed, includes: a surge detection step of determining whether the operation point of the compressor is positioned in a surge operation region at each predetermined timing; a surge avoidance opening-degree calculation step of calculating a surge avoidance opening degree of the operation device necessary for moving the operation point of the compressor determined to be positioned in the surge operation region in the surge detection step out of the surge operation region; a correction opening-degree calculation step of calculating a correction opening degree of the operation device on the basis of a moving velocity of the operation point of the compressor which is determined to be positioned in the surge operation region in the surge detection step; and an opening-degree command value calculation step of calculating an opening-degree command value of the operation device on the basis of the surge avoidance opening degree and the correction opening degree.

公开(公告)号：US20180238334A1

公开(公告)日：2018-08-23

申请号：US15440061

申请日：2017-02-23

申请人： Shimadzu Corporation

发明人： Nobuhiko MORIYAMA

IPC分类号： F04D27/00 ,  F04D19/04 ,  F04D29/32 ,  F04D29/58 ,  F04D29/54

CPC分类号： F04D29/542 ,  F04D19/042 ,  F04D27/0261 ,  F04D27/0292 ,  F04D29/584

摘要： A turbo-molecular pump comprises a cylindrical rotor to be rotatably driven by a motor; a cylindrical stator provided corresponding to the rotor; a heater configured to elevate a temperature of the stator to a target temperature; a temperature sensor configured to detect the temperature of the stator; and a control section. A rotation start command is input after start of energization of the heater, the control section stops rotary driving of the rotor at a rated rotation speed until the temperature of the stator reaches a predetermined temperature set lower than the target temperature and begins the rotary driving at the rated rotation speed when the temperature of the stator exceeds the predetermined temperature.

公开(公告)号：US20180149163A1

公开(公告)日：2018-05-31

申请号：US15880820

申请日：2018-01-26

申请人： Compressor Controls Corporation

发明人： Saul Mirsky ,  Wayne Jacobson ,  Jeff McWhirter

IPC分类号： F04D27/02

CPC分类号： F04D27/0261 ,  F04D27/0292

摘要： A control method and apparatus for startup of turbocompressors to avoid overpowering a driver of the turbocompressor. In a first embodiment, the control system monitors input signals from transmitters of various control inputs. When the input signals exceed threshold values, the control system begins to close the antisurge valve. In a second embodiment, the antisurge valve begins to close after a predetermined time measured from the time startup is initiated. In both embodiments, the antisurge valve continues to ramp closed until the compressor has reached its operating zone, or until the compressor's operating point reaches a surge control line, at which point the antisurge valve is manipulated to keep the compressor from surging.

公开(公告)号：US20180058741A1

公开(公告)日：2018-03-01

申请号：US15804493

申请日：2017-11-06

申请人： TRANE INTERNATIONAL INC.

发明人： Michael Carl BOEHDE

IPC分类号： F25B49/02 ,  F04D27/00 ,  F24F1/06 ,  F24F1/50 ,  F24F11/00 ,  F04D27/02

CPC分类号： F25B49/027 ,  F04D27/004 ,  F04D27/0261 ,  F24F1/06 ,  F24F1/50 ,  F24F11/77 ,  F25B2700/2106 ,  Y02B30/746

摘要： Generally, a variable fan speed control in an HVAC system is described. Such methods and systems to control fan speed can in turn improve efficiency of the HVAC system by minimizing power consumption, for example of the compressor. The control scheme is based on various operating conditions of compressor load and ambient air temperature, which are used to determine an optimum fan speed.

公开(公告)号：US09890796B2

公开(公告)日：2018-02-13

申请号：US15040380

申请日：2016-02-10

申请人： Shimadzu Corporation

发明人： Nobuhiko Moriyama

IPC分类号： H02P3/14 ,  F04D29/58 ,  F04D25/06 ,  F04D27/00

CPC分类号： F04D29/584 ,  F04D19/042 ,  F04D25/06 ,  F04D27/001 ,  F04D27/004 ,  F04D27/0261 ,  F04D27/0292

摘要： A vacuum pump device comprises: a power supply device including a dew condensation detector configured to detect dew condensation, a regenerative braking resistance, and a controller configured to energize the regenerative braking resistance; a cooling system using coolant; and a pump main body including a motor rotatably driven by the power supply device. When the dew condensation detector detects the dew condensation, the controller energizes the regenerative braking resistance to heat an inside of the power supply device.

公开(公告)号：US09810469B2

公开(公告)日：2017-11-07

申请号：US14050785

申请日：2013-10-10

申请人： TRANE INTERNATIONAL INC.

发明人： Michael Carl Boehde

IPC分类号： F25D17/00 ,  F25B39/04 ,  F25B41/00 ,  F25B49/02 ,  F04D27/00 ,  F24F1/06 ,  F24F1/50 ,  F24F11/00 ,  F04D27/02

CPC分类号： F25B49/027 ,  F04D27/004 ,  F04D27/0261 ,  F24F1/06 ,  F24F1/50 ,  F24F11/77 ,  F25B2700/2106 ,  Y02B30/746

摘要： Generally, a variable fan speed control in an HVAC system is described. Such methods and systems to control fan speed can in turn improve efficiency of the HVAC system by minimizing power consumption, for example of the compressor. The control scheme is based on various operating conditions of compressor load and ambient air temperature, which are used to determine an optimum fan speed.

公开(公告)号：US20170241426A1

公开(公告)日：2017-08-24

申请号：US15591429

申请日：2017-05-10

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Johannes SCHMID ,  Simon GRILC ,  Fabian BRANDL

IPC分类号： F04D29/056 ,  H01M8/24 ,  F16C33/10 ,  H01M8/043 ,  F04D27/02 ,  F16C17/24

CPC分类号： F04D29/056 ,  F04D27/0261 ,  F04D29/057 ,  F05D2260/85 ,  F16C17/246 ,  F16C33/1005 ,  H01M8/043 ,  H01M8/24

摘要： A method is provided for operating a fluid conveying device of a motor vehicle having at least one aerodynamic bearing. The method reduces the rotational speed of the aerodynamic bearing to a rest speed, wherein the rest speed is below a lifting speed, in which case the bearing builds up an air film for bearing free of mixed friction, and wherein the rest speed is above a lowering speed, in which case the bearing has reduced the air film such that mixed friction occurs. The fluid conveying device is operated at the rest speed.