利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

497 条记录 (耗时 0.019 秒)

    VARIABLE DISPLACEMENT PISTON PUMP WITH ELECTRONIC CONTROL UNIT TO PROVIDE DIRECT METERING CONTROL
    3.
    发明公开
    VARIABLE DISPLACEMENT PISTON PUMP WITH ELECTRONIC CONTROL UNIT TO PROVIDE DIRECT METERING CONTROL 审中-公开

    公开(公告)号：US20230204029A1

    公开(公告)日：2023-06-29

    申请号：US17562214

    申请日：2021-12-27

    申请人： Hamilton Sundstrand Corporation

    发明人： Weishun Willaim Ni ,  Edward W. Goy ,  Benjamin T. Harder ,  Mark W. Shoemaker

    IPC分类号： F02C9/30 ,  F04B49/06 ,  F04B49/12

    CPC分类号： F02C9/30 ,  F04B49/065 ,  F04B49/12

    摘要： A variable displacement piston pump, having: a housing, a pivot assembly to pivot between minimal and maximum pivot angles; a pump cover defining an actuator bore with an actuator piston, an actuator arm extending from the actuator piston to the pivot assembly; and an electronic control unit (ECU) coupled to the pump, the ECU having: a pump controller, a linear variable differential transducer (LVDT) coupled to the pump controller and the actuator piston, and an electrohydraulic solenoid valve (EHSV) coupled to the pump controller, the ECU is configured to: determine a pivot differential for the pivot assembly between a target pivot angle and a current pivot angle; determine a position differential for the actuator piston, corresponding to the pivot differential of the pivot assembly; control the EHSV to move the actuator piston by the position differential; and determine, from the LVDT, that the actuator piston moved by the position differential.

    Compressor driving apparatus and refrigerator including the same
    5.
    发明授权
    Compressor driving apparatus and refrigerator including the same 有权

    公开(公告)号：US11674728B2

    公开(公告)日：2023-06-13

    申请号：US16603123

    申请日：2018-04-04

    申请人： LG Electronics Inc.

    发明人： Nayi Ryu

    IPC分类号： F25B1/02 ,  F25B49/02 ,  F04B49/12 ,  F04B35/04

    CPC分类号： F25B49/022 ,  F04B35/045 ,  F04B49/12 ,  F25B1/02 ,  F25B2400/073 ,  F25B2500/12 ,  F25B2500/19 ,  F25B2600/021 ,  F25B2600/024 ,  F25B2700/06

    摘要： Described are a compressor driving apparatus and a refrigerator including the same. The compressor driving apparatus includes: switching elements; an inverter; an output current detector for detecting an output current flowing through a motor; and an inverter controller for controlling the inverter. The inverter controller controls the piston so that one end of the piston is fixed at a first position spaced apart from the discharge unit at stroke of the piston during a first period, controls the piston to collide with the discharge unit when a change rate in an operation rate or a position error of the compressor is equal to or greater than a predetermined value, and controls the piston so that the one end of the piston is fixed at a second position spaced apart from the discharge unit at stroke of the piston during a second period after the collision of the piston.

    Reciprocating positive displacement pump with electric reversing motor
    7.
    发明授权
    Reciprocating positive displacement pump with electric reversing motor 有权

    公开(公告)号：US10072652B2

    公开(公告)日：2018-09-11

    申请号：US14343475

    申请日：2012-09-10

    申请人： Timothy S. Roman ,  Greg T. Mrozek

    发明人： Timothy S. Roman ,  Greg T. Mrozek

    IPC分类号： F04B49/12 ,  F04B17/03 ,  F04B49/06

    CPC分类号： F04B49/12 ,  F04B17/03 ,  F04B49/06 ,  F04B2201/0201 ,  F04B2203/0209

    摘要： A pump system comprises an electric motor, a pump, a converter and a controller. The electric motor has a rotational output shaft that is rotatable in a first rotational direction and an opposite second rotational direction. The pump has a linearly displaceable input shaft that is movable in a first linear direction and an opposite second linear direction. The converter couples the output shaft to the input shaft such that rotation of the output shaft in the first rotational direction translates the input shaft in the first linear direction, and rotation of the output shaft in the second rotational direction translates the input shaft in the second linear direction. The controller repeatedly reverses rotation of the output shaft to produce reciprocating motion of the input shaft.

    VARIABLE DISPLACEMENT HYDRAULIC PUMP WITH ELECTROMECHANICAL ACTUATOR AND METHOD THEREOF
    8.
    发明申请
    VARIABLE DISPLACEMENT HYDRAULIC PUMP WITH ELECTROMECHANICAL ACTUATOR AND METHOD THEREOF 审中-公开

    公开(公告)号：US20180058449A1

    公开(公告)日：2018-03-01

    申请号：US15683826

    申请日：2017-08-23

    申请人： Schaeffler Technologies AG & Co. KG

    发明人： Joseph Johnson ,  Jonathan Richards

    IPC分类号： F04C14/18

    CPC分类号： F04C14/185 ,  F04B1/324 ,  F04B49/12

    摘要： A pump, including: inlet port and outlet ports; a cylinder block including a piston disposed in a through-bore; a swash plate engaged with the piston; a drive shaft non-rotatably connected to the drive shaft, arranged to rotate the cylinder block to draw fluid through the inlet port into the through-bore and to expel the fluid from the through-bore and through the outlet port and including an axis of rotation; an axis transverse to the axis of rotation; and an actuator including a roller screw; a nut disposed about the roller screw and in threaded contact with the roller screw; an actuator pin; and an electric motor arranged to rotate the roller screw or the nut to axially displace the actuator pin to pivot the swash plate or the cylinder block about the axis and control an amount of the fluid expelled from the through-bore.

    AIR SUPPLY DEVICE
    9.
    发明申请
    AIR SUPPLY DEVICE 审中-公开

    公开(公告)号：US20180051691A1

    公开(公告)日：2018-02-22

    申请号：US15239850

    申请日：2016-08-18

    申请人： Xiaorong Li

    发明人： Xiaorong Li

    IPC分类号： F04B49/12 ,  F04B35/04 ,  F04B39/00 ,  F04B39/12

    CPC分类号： F04B49/12 ,  F04B35/04 ,  F04B39/0005 ,  F04B39/0022 ,  F04B39/12 ,  F04B39/122

    摘要： An air supply device, comprising a motor, a reducer connected to a spindle of the motor, a driving shaft connected to an output shaft of the reducer, and a connecting rod connected to the driving shaft; a cylinder having a piston disposed therein, the connecting rod being sealed inside the cylinder and connected to the piston; a control circuit, the motor being connected to an output end of the control circuit through wires; a storage battery connected to the motor and the control circuit through the wires to supply power thereto; the piston including an adjusting lever penetrated therethrough and being movable with respect to the piston, the adjusting lever having an air supplement hole; the air supply device having advantage of small size, light weight, convenience in use, and power saving.