公开(公告)号：US20200224682A1

公开(公告)日：2020-07-16

申请号：US16714504

申请日：2019-12-13

Applicant: Project Phoenix, LLC

Inventor： Thomas AFSHARI

IPC: F15B11/10 ,  F15B15/18 ,  F04C2/18 ,  F04C15/00 ,  F04C15/06 ,  F04C28/08 ,  F15B1/26 ,  F15B11/00 ,  F15B15/14 ,  E02F3/42 ,  E02F9/22 ,  F04C2/14

Abstract: A linear actuator system includes a linear actuator and at least one integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with at least one fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover to exclusively adjust at least one of a flow and a pressure in the linear actuator system to an operational set point.

公开(公告)号：US10690045B2

公开(公告)日：2020-06-23

申请号：US15449972

申请日：2017-03-05

Applicant: Southwest Research Institute

Inventor： John C. Hedrick ,  Steven G. Fritz ,  Randy R. McDonnell

IPC: F02B39/04 ,  F02B33/38 ,  F02B33/40 ,  F02D41/00 ,  F02D41/14 ,  F04C18/12 ,  F04C29/00 ,  F02D43/00 ,  F04C28/08 ,  F02B75/02 ,  F02B75/18

Abstract: An air boost system for a two-cycle engine, such as an EMD engine, which operates with one or more roots blowers, or for similar engines that use gear-driven roots blowers or centrifugal blowers. At least one of the roots blowers is equipped with a variable transmission, which allows airflow into the engine to be varied in accordance with load or other engine operating conditions.

公开(公告)号：US10570898B2

公开(公告)日：2020-02-25

申请号：US15882980

申请日：2018-01-29

Applicant: Raymond Zhou Shaw ,  Elivac Company, Ltd. (Suzhou) ,  Elivac Company, Ltd. (Shanghai)

Inventor： Raymond Zhou Shaw ,  Yi Rong

IPC: F04C23/00 ,  F04C18/12 ,  F04C11/00 ,  F01C21/00 ,  F04C28/02 ,  F04C28/08 ,  F04C29/00 ,  F04C25/02 ,  F04C29/04 ,  F04C29/12

Abstract: A modularized integrated non-coaxial multiple chamber dry vacuum pump is formed by at least two modularized vacuum chambers that can be integrated into a solid multiple stage dry vacuum pump. These chambers are connected in serial to allow gas to pass through and be discharged directly to the atmosphere. Each chamber contains a pair of lobes of its own and at least one chamber does not share at least one coaxial axle with another chamber. At least two chambers do not share all co-axial(s) and can have their own power drive at different RPMs from either different motors or transmissions.

公开(公告)号：US10569620B2

公开(公告)日：2020-02-25

申请号：US15635688

申请日：2017-06-28

Applicant: Emerson Climate Technologies, Inc.

Inventor： Shawn W. Vehr ,  Joseph James Rozsnaki

IPC: B60H1/32 ,  F04B49/02 ,  F04B49/20 ,  F04C28/06 ,  F04C28/08 ,  F25B49/02 ,  B60H1/00 ,  F04C18/02

Abstract: A refrigeration system includes a startup mode control module that receives an off time of a compressor of the refrigeration system and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module operates the compressor in the normal startup mode in response to the startup mode control module selecting the normal startup mode, in the flooded startup mode in response to the startup mode control module selecting the flooded startup mode, and transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode. The compressor is operated at a first speed in the normal startup mode and at a second speed in the flooded startup mode.

公开(公告)号：US20190264967A1

公开(公告)日：2019-08-29

申请号：US15904087

申请日：2018-02-23

Applicant: KYUNGWON MACHINERY CO., LTD.

Inventor： Man Sig JU ,  Jung Hoon CHUNG ,  Jae-Jung BAE

IPC: F25B49/02 ,  F25B1/10 ,  F04C23/00 ,  F04C28/08

Abstract: The present disclosure relates to a multi-stage compression system in which the drive speed of each compressor that constitutes the multi-stage compression system is individually controlled to increase compression efficiency, and a control method thereof. To this end, the present disclosure includes at least two compressors, at least two driving devices connected to each of the compressors in series to drive the compressors connected in series, at least two pressure detectors installed at a discharge end of each of the compressors to detect a discharge pressure of each compressor, and a control unit configured to individually control a drive speed of each driving device based on the discharge pressure of each compressor detected through each of the pressure detectors.

公开(公告)号：US10385852B2

公开(公告)日：2019-08-20

申请号：US14785241

申请日：2014-05-06

Applicant: Carrier Corporation

Inventor： Da Zhang ,  Richard T. Pandzik ,  William Perdikakis ,  Mark E. Rollins

IPC: F04C28/06 ,  F04C23/00 ,  F04C28/28 ,  F04C23/02 ,  F04B49/06 ,  F04B49/10 ,  F04C18/02 ,  F04C28/08

Abstract: A method for expulsion of a fluid inside a compressor at start-up including the steps: applying a first signal to the motor windings for a first duration of time to align the motor rotor to the initial position; applying a second signal to the motor windings to start rotation of the compressor shaft; applying a third signal to the motor windings for a second duration of time to hold the compressor shaft in place; and applying a fourth signal to the motor windings to accelerate the motor to an operational speed.

公开(公告)号：US10352608B2

公开(公告)日：2019-07-16

申请号：US15676220

申请日：2017-08-14

Applicant: TRANE INTERNATIONAL INC.

Inventor： David M. Foye ,  Nathan T. West ,  Dennis M. Beekman ,  John R. Sauls

IPC: F25B49/02 ,  F04C18/16 ,  F04C28/08 ,  F25B1/047 ,  F04C18/00 ,  F04B35/04

Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.

公开(公告)号：US20190201086A1

公开(公告)日：2019-07-04

申请号：US16024180

申请日：2018-06-29

Applicant: Ethicon LLC

Inventor： Frederick E. Shelton, IV ,  Jason L. Harris ,  David C. Yates

IPC: A61B18/14 ,  G05B19/042 ,  A61B17/32 ,  F04C18/02 ,  F04C28/28 ,  F04C28/08 ,  B01D46/00 ,  B01D46/44

CPC classification number: A61B18/00 ,  A61B18/1402 ,  A61B2017/00119 ,  A61B2018/00589 ,  A61B2018/00601 ,  A61B2018/00642 ,  A61B2018/00666 ,  A61B2018/00744 ,  A61B2018/00994 ,  A61B2217/005 ,  A61B2218/008

Abstract: Surgical systems can include evacuation systems for evacuating smoke, fluid, and/or particulates from a surgical site. A surgical evacuation system can be intelligent and may include one or more sensors for detecting one or more properties of the surgical system, evacuation system, surgical procedure, surgical site, and/or patient tissue, for example.

公开(公告)号：US10273958B2

公开(公告)日：2019-04-30

申请号：US14896686

申请日：2014-07-29

Applicant: DENSO CORPORATION

Inventor： Koji Sakai

IPC: F04C29/04 ,  F04B35/04 ,  F04B49/02 ,  F04B49/06 ,  F04C18/344 ,  F04C28/06 ,  F04C28/08 ,  F04C29/00 ,  F04C28/28 ,  F04C18/02

Abstract: A motor-driven compressor includes: a compression mechanism; an electric motor that drives the compression mechanism; a driver circuit unit disposed at a position to be cooled by refrigerant drawn by the compression mechanism; a temperature detection unit that detects a temperature of the driver circuit unit; and a motor control device disposed in the driver circuit unit to control the motor. The motor control device stores a predetermined drive pattern corresponding to a temperature characteristic of the driver circuit unit after starting the motor. When the temperature detected by the temperature detection unit at a time of starting the motor is higher than or equal to a predetermined temperature, the motor control device performs a limit drive control according to the predetermined drive pattern regardless of a drive state command to the motor.

公开(公告)号：US10132304B2

公开(公告)日：2018-11-20

申请号：US15168989

申请日：2016-05-31

Applicant: MAN TRUCK & BUS AG

Inventor： Andreas Hase

IPC: F04B35/04 ,  B60K6/445 ,  B60L15/02 ,  F04B49/06 ,  H02P23/04 ,  B60T13/26 ,  F04B27/00 ,  F04C18/16 ,  F04C18/344 ,  F04C28/08 ,  F04C29/00 ,  H02P23/00 ,  G05D16/20

Abstract: A method for controlling an electrical drive of an electrically driven air compressor of a motor vehicle and a corresponding control circuit. A prevailing load torque of the air compressor that is applied at a drive shaft of the compressed air compressor is estimated as a function of at least one operating parameter and is fed forward as an estimated disturbance variable to the control circuit of the electrical drive to reduce a control error produced as a result of the prevailing load torque.