公开(公告)号：US11319939B2

公开(公告)日：2022-05-03

申请号：US16833767

申请日：2020-03-30

Applicant: Hanon Systems

Inventor： Kanwal Bhatia ,  Robert C. Trela ,  Teodor Urdea

IPC: F04B7/00 ,  F04B11/00 ,  F04B49/12 ,  F04B39/00 ,  F04B27/10 ,  F04B39/08 ,  F04B27/18

Abstract: A suction damping device for a variable displacement compressor includes a rotor rotatably received within a stator disposed in a suction port of the variable displacement compressor. The rotor includes an aperture and the stator includes a pair of opposing openings in selective fluid communication with the aperture of the rotor. An electromagnetic device controls a rotational position of the rotor relative to the stator based on a condition of an electrically controlled valve used to control an angle of inclination of a swashplate of the variable displacement compressor. A changing of the rotational position of the rotor relative to the stator causes a variable overlap to be formed between the aperture of the rotor and the openings of the stator to control a flow of a refrigerant through the suction damping device.

公开(公告)号：US11311659B2

公开(公告)日：2022-04-26

申请号：US16064265

申请日：2016-12-20

Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH

Inventor： Arne Peters

IPC: A61M1/36 ,  F04B11/00 ,  F04B13/00 ,  A61M1/34 ,  F04B49/22 ,  F04B43/06 ,  A61M60/40

Abstract: The invention relates to a blood treatment device having at least one metering line which opens into a fluid circuit, wherein a conveyor module is arranged in the metering line and comprises a membrane pump and a valve which is arranged at the pressure side thereof and which can act both as a blocking valve and as a restricting valve.

公开(公告)号：US11307179B2

公开(公告)日：2022-04-19

申请号：US16648077

申请日：2017-10-23

Applicant: SHIMADZU CORPORATION

Inventor： Jun Yanagibayashi ,  Shinya Imamura ,  Keisuke Ogawa ,  Masataka Nikko ,  Shinichi Fujisaki

IPC: G01N30/32 ,  F04B49/20 ,  G01N30/34 ,  F04B23/06 ,  F04B49/06 ,  B01D15/16 ,  F04B11/00 ,  G01N30/02

Abstract: The liquid feeding device includes a discharge speed calculation part configured to calculate a discharge speed v of the plunger pump so that a converted value LATM under an atmospheric pressure of a flow rate LPRE of the mobile phase discharged to the discharge channel from the pump part becomes a set flow rate LSET using a volume V of the mobile phase in the pump chamber of the closing pump immediately before the precompression process is started, a volume ΔV reduced due to the precompression process of the mobile phase in the pump chamber of the closing pump, and a feeding pressure P; and a discharge operation controller configured to control a discharge speed of the plunger pump to a discharge speed v calculated by the discharge speed calculation part.

公开(公告)号：US20220113241A1

公开(公告)日：2022-04-14

申请号：US17645727

申请日：2021-12-22

Applicant: IRIS INTERNATIONAL, INC.

Inventor： Yong Qin Chen

IPC: G01N15/14 ,  G02B6/293 ,  G02B6/26 ,  F04B11/00 ,  G01N35/10 ,  G02B21/04 ,  G02B21/36 ,  G02B27/00

Abstract: The disclosed flow cytometer includes a wavelength division multiplexer (WDM). The WDM includes an extended light source providing light that forms an object, a collimating optical element that captures light from the extended light source and projects a magnified image of the object as a first light beam, and a first focusing optical element configured to focus the first light beam to a size smaller than the object of the extended light source to a first semiconductor detector. The disclosed flow cytometer further includes a composite microscope objective to direct light emitted by a particle in a flow channel in a viewing zone of the composite microscope to the extended light source, a fluidic system and a peristaltic pump configured to supply liquid sheath and liquid sample to the flow channel, and a laser diode system to illuminate the particle in the flow channel.

公开(公告)号：US11299971B2

公开(公告)日：2022-04-12

申请号：US17463596

申请日：2021-09-01

Applicant: BJ Energy Solutions, LLC

Inventor： Tony Yeung ,  Ricardo Rodriguez-Ramon ,  Joseph Foster

IPC: E21B43/26 ,  F04B17/05 ,  F04B49/06 ,  E21B43/267 ,  F04B11/00 ,  E21B47/008 ,  F04B47/00 ,  F04B23/06 ,  F04B17/06

Abstract: Systems and methods for monitoring, detecting, and/or intervening with respect to cavitation and pulsation events during hydraulic fracturing operations may include a supervisory controller. The supervisory controller may be configured to receive pump signals indicative of one or more of pump discharge pressure, pump suction pressure, pump speed, or pump vibration associated with operation of the hydraulic fracturing pump. The supervisory controller also may be configured to receive blender signals indicative of one or more of blender flow rate or blender discharge pressure. Based on one or more of these signals, the supervisory controller may be configured to detect a cavitation event and/or a pulsation event. The supervisory controller may be configured to generate a cavitation notification signal indicative of detection of cavitation associated with operation of the hydraulic fracturing pump, and/or a pulsation notification signal indicative of detection of pulsation associated with operation of the hydraulic fracturing pump.

公开(公告)号：US11156543B2

公开(公告)日：2021-10-26

申请号：US16583775

申请日：2019-09-26

Applicant: Life Technologies Corporation

Inventor： Michael Ward ,  Jason Malkin

IPC: G01N15/14 ,  G05D7/06 ,  F04B23/04 ,  F04B11/00 ,  F04B13/00 ,  F04C15/00 ,  F04B49/06 ,  F04C2/08 ,  F04C28/02

Abstract: An embodiment of a system with a minute measure of pulsatility in a flow of a fluid is described that comprises a first pump configured to flow the fluid to a junction at a first flow rate that comprises a measure of pulsatility; and a second pump configured to flow a portion of the fluid from the junction at a second flow rate that is less than the first flow rate to produce a flow of the fluid at a third flow rate from the junction with a minute measure of pulsatility.

公开(公告)号：US11104313B2

公开(公告)日：2021-08-31

申请号：US16211389

申请日：2018-12-06

Applicant: Robert Bosch GmbH

Inventor： Jens Norberg ,  Andreas Lechler ,  Patrick Schellnegger

IPC: F04B7/02 ,  F04B7/04 ,  F04B49/035 ,  B60T8/40 ,  F04B11/00 ,  B60T17/02 ,  F04B9/04 ,  F04B1/053

Abstract: A piston pump is configured to convey pressure medium in a pressure medium circuit, in particular in a braking circuit of a motor vehicle braking system that may be electronically controlled to counteract slip. The pump piston delimits an operating chamber and is received in a displaceable manner in a pump cylinder and may be driven to produce a stroke movement that goes back and forth between two reversing positions. The operating chamber may be connected in a controllable manner to a pump inlet or outlet. A pressure medium connection is provided from the pump outlet to the operating chamber, said pressure medium connection is controllable in dependence upon a relative position of the pump piston with respect to the first reversing position. Pressure pulsations of the piston pump are prevented and the operating noise is reduced.

公开(公告)号：US20210207753A1

公开(公告)日：2021-07-08

申请号：US17053136

申请日：2019-04-12

Applicant: HYDAC TECHNOLOGY GMBH

Inventor： Herbert BALTES ,  Peter KLOFT

IPC: F16L55/027 ,  F04B11/00

Abstract: A damping device, in particular for damping or preventing pressure surges, such as pulsations, in hydraulic supply circuits, preferably in the form of a silencer, having a damping housing (2) encompassing a damping chamber (10), wherein said damping housing (2) has at least one fluid inlet (6) and at least one fluid outlet (8) as well as a fluid receiving chamber extending between the fluid inlet (6) and the fluid outlet (8), wherein during operation of the device a fluid flow coming from the fluid inlet (6) passes through the damping chamber (10) towards the fluid outlet (8) and wherein a wall part of the fluid receiving chamber extends as a guide element (16) in at least one direction of extension transverse to the direction of the fluid flow, is characterized in that in the damping chamber (10) several guide elements (16) are provided, against which the fluid can flow and which alter the flow velocity in certain areas.

公开(公告)号：US20210190049A1

公开(公告)日：2021-06-24

申请号：US17191023

申请日：2021-03-03

Applicant: Carlisle Fluid Technologies, Inc.

Inventor： Alan Smith

IPC: F04B11/00 ,  F04B9/04 ,  F04B15/02 ,  F04B17/03 ,  F04B53/08

Abstract: A positive displacement pump for pumping a fluid mastic comprises a plurality of cylinders each having a piston arranged for reciprocal motion within the cylinder. Movement of the piston in a first direction draws the fluid into the cylinder and movement in a second, opposite direction pumps the fluid out of the cylinder. A variable speed electric motor is drivingly coupled to a cam arrangement providing a reciprocating drive to the pistons. The cam arrangement comprises cams shaped and arranged to drive each piston in the first direction over less than half of a rotational cycle and to drive each piston in the second direction over the remainder of the rotational cycle. The cams are arranged to drive the pistons out of phase with one another.

公开(公告)号：US11035355B2

公开(公告)日：2021-06-15

申请号：US16295319

申请日：2019-03-07

Applicant: Surpass Industry Co., Ltd.

Inventor： Yukinobu Imai ,  Kazuki Hirai

IPC: F04B43/12 ,  F04B43/00 ,  F04B11/00 ,  F04B49/06 ,  F04B13/00

Abstract: A tube pump system is provided, which includes a pair of roller units which are rotated around the axis line from a contact position to a separate position in a state where the pair of roller units compress the tube, a pair of drive units which rotate the pair of roller units respectively, and a control unit which controls each of the pair of drive units, wherein the control unit controls each of the pair of drive units such that, when one of the pair of roller units passes the separate position, an angular velocity of the other of the pair of roller units toward the separate position is gradually decreased.