公开(公告)号：US11953119B2

公开(公告)日：2024-04-09

申请号：US18474975

申请日：2023-09-26

Applicant: SHENZHEN KEYTO FLUID TECHNOLOGY CO., LTD.

Inventor： Cheng Zhang ,  Xiyuan Xiao ,  Jin Liu ,  Yi Wu

IPC: F16K37/00 ,  A61M5/20 ,  A61M5/315 ,  F04B17/03 ,  F04B49/06 ,  F16K11/074 ,  F16K31/04

CPC classification number: F16K37/005 ,  A61M5/20 ,  A61M5/31546 ,  A61M5/31565 ,  A61M5/31568 ,  A61M5/3157 ,  A61M5/31576 ,  A61M5/31585 ,  F04B17/03 ,  F04B49/06 ,  F04B49/065 ,  F16K11/0743 ,  F16K31/042 ,  F16K37/0041 ,  A61M5/31573 ,  A61M2005/31588 ,  F04B2201/0201 ,  F04B2205/03

Abstract: A micro-metering device with a constant flow rate, including a rotary shear valve, a mounting seat, a rotation drive assembly, an injection drive assembly and a controller. The rotary shear valve includes a valve main body and a valve spool. The valve main body is provided with a main flow channel and a plurality of branch flow channels. The valve spool is rotatably arranged inside the valve main body, and is configured to communicate the main flow channel with different branch flow channels. A pressure sensor is provided inside the valve main body, and is communicated with the main flow channel. The pressure sensor is configured for detecting a pressure inside the main flow channel. Whether the switching of the liquid path is correct is determined according to the pressure in the main flow channel.

公开(公告)号：US20190186478A1

公开(公告)日：2019-06-20

申请号：US16209337

申请日：2018-12-04

Applicant: NUOVO PIGNONE TECNOLOGIE - S.r.l.

Inventor： Federico Cappelli ,  Federico Sorgona ,  Gianni Orsi ,  Paolo Acciai ,  Alberto Babbini

IPC: F04B27/02 ,  F04B39/00 ,  F04B39/10

CPC classification number: F04B27/02 ,  F04B39/0016 ,  F04B39/064 ,  F04B39/10 ,  F04B39/122 ,  F04B39/123 ,  F04B49/10 ,  F04B51/00 ,  F04B2205/03 ,  G01N3/56

Abstract: A manufacturing method for manufacturing a cylinder for a reciprocating compressor is disclosed. The method comprises the step of manufacturing a compressor barrel comprising a cylinder chamber, a first suction valve seat, fluidly coupled to the cylinder chamber through a respective first gas suction port; and a first delivery valve seat, fluidly coupled to the cylinder chamber through a respective first gas delivery port. The method further comprises the step of manufacturing a gas inlet plenum and further manufacturing a gas discharge plenum, separately from the compressor barrel.

公开(公告)号：US20180274531A1

公开(公告)日：2018-09-27

申请号：US15764565

申请日：2015-11-26

Applicant: Shimadzu Corporation

Inventor： Jun YANAGIBAYASHI

IPC: F04B49/06 ,  F04B23/06 ,  F04B49/20

CPC classification number: F04B49/065 ,  F04B13/00 ,  F04B23/06 ,  F04B49/20 ,  F04B2201/0202 ,  F04B2205/03 ,  G01N30/32 ,  G01N2030/326

Abstract: A liquid feeding apparatus includes: a plurality of plunger pumps fluidly connected in series or in parallel between a suction flow path and a discharge flow path; and a control unit configured to control an operation of the plunger pump. The control unit includes a compensation flow rate calculation unit configured to calculate a positive compensation flow rate which changes with time in synchronization with the period with respect to a set flow rate. The compensation flow rate is a flow rate which compensates for a loss of the flow rate caused by cooling and contraction in a discharge stroke after the fluid in the plunger pump is compressed and heated in a pre-compression stroke. The compensation flow rate calculation unit is configured to calculate the compensation flow rate.

公开(公告)号：US10012226B2

公开(公告)日：2018-07-03

申请号：US15215293

申请日：2016-07-20

Applicant: Medtronic, Inc.

Inventor： Craig Petersen ,  Kartik Radhakrishnan ,  Walter Carpenter

IPC: F04B43/12 ,  F04B49/06 ,  F04B53/16

CPC classification number: F04B43/1276 ,  F04B43/1253 ,  F04B49/065 ,  F04B53/16 ,  F04B2203/0207 ,  F04B2205/03 ,  F04B2205/09

Abstract: A roller pump including a drive shaft, a motor, a roller head assembly, a stator housing, and an occlusion adjustment assembly. The drive shaft is coupled to the motor. The roller head assembly includes a hub, a slide body, and a roller. The hub is mounted to the drive shaft, and maintains the slide body and the roller. The stator housing forms a raceway receiving surface. The occlusion adjustment assembly includes an actuator knob, an actuating structure, and a ground shaft. The actuating structure interfaces with the slide body, and thus the roller, with rotation of the knob. The ground shaft supports the knob and is rotationally isolated from the drive shaft. A user and optionally a control system can adjust occlusion while the pump continuously delivers a fluid medium.

公开(公告)号：US09039387B2

公开(公告)日：2015-05-26

申请号：US12769370

申请日：2010-04-28

Applicant: Joerg Mellar

Inventor： Joerg Mellar

IPC: F04B49/16

CPC classification number: F04B49/16 ,  F04B2201/0808 ,  F04B2205/03

Abstract: A supercharged compressor and method of operating the compressor supplies a commercial vehicle with compressed air. The compressor includes a piston chamber, a dead space or clearance volume and a valve unit for switching the clearance volume. The valve element is configured such that the air volume supplied by the supercharged compressor can be reduced to a value that is different from zero by activating the clearance volume.

Abstract translation: 增压压缩机和操作压缩机的方法为商业车辆提供压缩空气。 压缩机包括活塞室，死空间或间隙容积以及用于切换间隙容积的阀单元。 阀元件构造成使得由增压压缩机提供的空气量可以通过启动间隙容积而减小到不同于零的值。

公开(公告)号：US09032935B2

公开(公告)日：2015-05-19

申请号：US13288073

申请日：2011-11-03

Applicant: Youssef A. Ghoneim ,  Mark N. Howell

Inventor： Youssef A. Ghoneim ,  Mark N. Howell

IPC: F02M37/08 ,  F04B49/06 ,  F04B49/10 ,  F02M37/00 ,  F02D33/00 ,  F02D41/30 ,  F02M63/02

CPC classification number: F02M37/08 ,  F02D33/003 ,  F02M37/0058 ,  F02M63/028 ,  F02M63/0295 ,  F04B49/06 ,  F04B49/103 ,  F04B2203/0201 ,  F04B2203/0209 ,  F04B2205/03

Abstract: A method for monitoring the fuel pump includes estimating a pump speed and a nominal pump motor current in relation to a pump motor control signal and a fuel pressure. An armature resistance and a back-emf constant for the electric motor are determined corresponding to the estimated pump speed, a monitored pump motor current, and the pump motor control signal. A nominal armature resistance and a nominal back-emf constant for the electric motor are adjusted in relation to a pump motor temperature. Residuals are calculated based upon the adjusted nominal armature resistance, the adjusted nominal back-emf constant for the electric motor, the estimated armature resistance and the estimated back-emf constant for the electric motor. The residuals are compared with corresponding thresholds. A fault in the electric motor is detected based upon the comparisons of the residuals with the corresponding thresholds.

Abstract translation: 用于监测燃料泵的方法包括相对于泵电动机控制信号和燃料压力估计泵速度和标称泵电动机电流。 根据估计的泵速，监测的泵电动机电流和泵电机控制信号来确定电动机的电枢电阻和反电动势常数。 相对于泵电机温度调节电动机的标称电枢电阻和标称反电动势常数。 剩余量是根据经调整的标称电枢电阻，电动机调整的额定反电动势常数，电动机估计的电枢电阻和估计的反电动势常数来计算的。 将残差与相应的阈值进行比较。 基于残差与相应阈值的比较来检测电动机的故障。

公开(公告)号：US20140322032A1

公开(公告)日：2014-10-30

申请号：US14329707

申请日：2014-07-11

Applicant: Entegris, Inc.

Inventor： James Cedrone ,  George L. Gonnella

IPC: F04B49/08 ,  F04B49/06

CPC classification number: F04B49/08 ,  F04B13/00 ,  F04B49/065 ,  F04B51/00 ,  F04B2205/03

Abstract: Systems and methods for maintaining substantially a baseline pressure in a chamber of a pumping apparatus are disclosed. Embodiments of the present invention may serve to control a motor to compensate or account for a pressure drift which may occur in a chamber of the pumping apparatus. More specifically, a dispense motor may be controlled to substantially maintain a baseline pressure in the dispense chamber before a dispense based on a pressure sensed in the dispense chamber. In one embodiment, before a dispense is initiated a control loop may be utilized such that it is repeatedly determined if the pressure in the dispense chamber is above a desired pressure and, if so, the movement of the pumping means regulated to maintain substantially the desired pressure in the dispense chamber until a dispense of fluid is initiated.

Abstract translation: 公开了用于在泵送装置的腔室中基本维持基线压力的系统和方法。 本发明的实施例可以用于控制电动机以补偿或解释可能在泵送装置的腔室中发生的压力漂移。 更具体地，可以控制分配马达，以在基于在分配室中感测到的压力的分配之前基本维持分配室中的基准压力。 在一个实施例中，在分配开始之前，可以利用控制回路，使得重复地确定分配室中的压力是否高于期望的压力，并且如果是，调节泵送装置的运动以维持基本上所需的 在分配室内的压力直到开始分配流体。

公开(公告)号：US08871088B2

公开(公告)日：2014-10-28

申请号：US12938780

申请日：2010-11-03

Applicant: Hironori Kaji ,  Hiroyuki Wada ,  Masato Fukuda

Inventor： Hironori Kaji ,  Hiroyuki Wada ,  Masato Fukuda

IPC: G01N30/32 ,  F04B11/00 ,  B01D15/16

CPC classification number: B01D15/163 ,  F04B11/0075 ,  F04B2205/03 ,  F04B2205/05 ,  G01N30/32 ,  G01N2030/324 ,  G01N2030/326 ,  G01N2030/328 ,  Y10T137/0324 ,  Y10T137/86131

Abstract: The present invention provides a liquid delivery device for liquid chromatographs which, by performing liquid delivery at an accurate flow rate with limited pulsation, gives accurate results of analysis. The present invention, with a view to preventing erroneous operation due to errors in measurements at the time of judgment of completion of compression of liquid, establishes the judgment point before the pressure measured by a cylinder pressure detector agrees with the pressure measured by a discharge pressure detector and also calculates the point of completion of compression. Control in this manner prevents pressure fluctuation. It also calculates for control the point of completion of compression from the history of compression performed previously.

Abstract translation: 本发明提供了一种用于液相色谱仪的液体输送装置，通过以有限的脉动以精确的流速进行液体输送，给出了精确的分析结果。 本发明为了防止在液体压缩完成判定时的测量误差的错误操作，在气缸压力检测器测得的压力与由排气压力测量的压力一致之前确立了判断点 检测器，并计算压缩完成点。 以这种方式进行控制可防止压力波动。 它还从先前执行的压缩历史计算控制压缩完成点。

公开(公告)号：US20140303791A1

公开(公告)日：2014-10-09

申请号：US14239737

申请日：2012-08-17

Applicant: Traci L. Batchelder ,  James Cedrone

Inventor： Traci L. Batchelder ,  James Cedrone

IPC: G05D9/12 ,  G05D7/06

CPC classification number: G05D9/12 ,  F04B13/00 ,  F04B49/065 ,  F04B53/06 ,  F04B2205/03 ,  G05D7/0617

Abstract: Embodiments can detect air in a pumping system. A portion of the system may be isolated from other components located upstream or downstream. The isolated portion may include a chamber, tubing, lines, valves or other components of a pump. In one embodiment, the difference between the starting pressure and an ending pressure taken after a piston has moved a predetermined distance. The pressure difference can be compared with an expected value established for the particular system set up and/or fluid property to detect the presence of air in the system. In some embodiments, a distance between the starting and ending positions of a pump component may be determined after a predetermined pressure difference has been achieved. The distance can be compared with an expected distance to detect the presence of air in the system.

Abstract translation: 实施例可以检测泵送系统中的空气。 系统的一部分可以与位于上游或下游的其它部件隔离。 隔离部分可以包括泵的腔室，管道，管线，阀或其它部件。 在一个实施例中，起动压力和在活塞已经移动预定距离之后所采取的结束压力之间的差异。 压力差可以与为特定系统建立的预期值和/或流体性质进行比较，以检测系统中空气的存在。 在一些实施例中，泵部件的起始位置和结束位置之间的距离可以在实现预定的压力差之后确定。 该距离可以与预期距离进行比较，以检测系统中空气的存在。

公开(公告)号：US08851864B2

公开(公告)日：2014-10-07

申请号：US13356990

申请日：2012-01-24

Applicant: Carlos Prieto ,  Larry Parmeter

Inventor： Carlos Prieto ,  Larry Parmeter

IPC: F04B35/04 ,  H02K7/08 ,  E21B43/12 ,  F04D13/10 ,  H02K7/04 ,  H02K7/16 ,  H02K5/132

CPC classification number: H02K7/08 ,  E21B43/128 ,  F04B2205/03 ,  F04D13/06 ,  F04D13/10 ,  H02K5/132 ,  H02K7/04 ,  H02K7/16 ,  H02K2205/03 ,  H02K2213/09

Abstract: Vibration of a rotor positioned within a stator of an electric motor of an electric submersible pump assembly is attenuated in a first embodiment by adjusting the length of the rotor to position rotor bearings supporting the rotor within the stator at locations of low amplitude vibration. In a second embodiment, hydraulic pressure is applied to a fluid chamber supporting a thrust bearing that supports the rotor. When hydraulic fluid pressure is applied, the thrust bearing and the rotor move axially. Thus, moving the rotor bearings away from areas of high amplitude vibration of the rotor. In a third embodiment, a sliding mass affixed to the motor is moved in response to vibration of the motor. Movement of the sliding mass changes the vibration profile of the motor.

Abstract translation: 位于电潜泵组件的电动机的定子内的转子的振动在第一实施例中通过调节转子的长度来减小在低振幅振动位置处支撑定子内的转子的转子轴承。 在第二实施例中，液压被施加到支撑支撑转子的止推轴承的流体室。 当施加液压流体压力时，推力轴承和转子轴向移动。 因此，使转子轴承远离转子的高振幅振动区域。 在第三实施例中，固定到电动机的滑动块响应于电动机的振动而移动。 滑动质量的运动会改变电机的振动特性。