Piston speed modulation for a concrete pump
    211.
    发明公开
    Piston speed modulation for a concrete pump 无效
    在eon Betonpumpe的Veränderungder Kolbengeschwindigkeit

    公开(公告)号:EP0971127A1

    公开(公告)日:2000-01-12

    申请号:EP99113575.7

    申请日:1999-07-08

    Applicant: Cifa S.P.A.

    CPC classification number: F04B15/02 F04B2201/0202

    Abstract: The invention concerns a concrete pump, of the type comprising a pair of pumping cylinders alternatively operating under the control of a backflow hydraulic pump - to draw concrete from a hopper and feed it, by way of a rocking valve (S-valve), into the transport and delivery duct - wherein said cylinders are provided with stops to control the starting movement of the S-valve. According to the invention, the speed of the piston stroke of said cylinders is modulated by being increased in the initial length of said stroke, and electronic means are provided to control said speed according to the maximum concrete capacity allowed by the pump.

    Abstract translation: 本发明涉及一种混合泵,其类型包括一对泵送缸,其可在回流液压泵的控制下交替地操作,以从料斗中抽出混凝土并通过摇动阀(S型阀)将其送入 运输和输送管道 - 其中所述气缸设置有止动件以控制S阀的起动运动。 根据本发明,通过在所述行程的初始长度上增加来调节所述气缸的活塞行程的速度,并且提供电子装置以根据泵允许的最大混凝土容积来控制所述速度。

    선형 컴프레서 구동 장치
    213.
    发明授权
    선형 컴프레서 구동 장치 有权
    线性压缩机驱动装置

    公开(公告)号:KR100493797B1

    公开(公告)日:2005-06-08

    申请号:KR1020037000694

    申请日:2002-05-20

    Abstract: A linear compressor driving apparatus (101) according to the present invention is a linear compressor driving apparatus having an inverter (2) which supplies a driving current of a predetermined frequency to a linear compressor (100), and the apparatus further includes an inverter controller (6) for controlling the inverter (2) on the basis of resonance frequency information so that the frequency of an output current from the inverter becomes equal to the resonance frequency, and instantaneous values of an output current Id and an output voltage Vd from the inverter (2) are measured at a phase timing in which an amount of change in the output current Id of the inverter (2) becomes zero, and a piston stroke is calculated from these measured values. In such linear compressor driving apparatus (101), a stroke and a top clearance of the piston of the linear compressor can be accurately detected by relatively simple arithmetic processing, without using a position sensor.

    리니어 컴프레샤의 스트로크 떨림 검출장치 및 방법
    214.
    发明公开
    리니어 컴프레샤의 스트로크 떨림 검출장치 및 방법 有权
    用于检测线性压缩机冲击的装置和方法

    公开(公告)号:KR1020020041630A

    公开(公告)日:2002-06-03

    申请号:KR1020000071301

    申请日:2000-11-28

    Abstract: PURPOSE: A device and method for detecting trembling of stroke of linear compressor are provided to prevent wrong operation due to mistaking voltage fluctuation or noise for stroke trembling by detecting stroke trembling with changing amount of phase difference of stroke and current. CONSTITUTION: A device comprises a linear compressor(200); a stroke voltage/current detective part(300); a stroke voltage/current phase difference detective part(400); a phase difference changing amount calculating part(500); a stroke trembling detective part(600); and a stroke controller(100). The phase difference changing amount calculating part repeatedly subtracts previously detected phase difference of stroke voltage/current from the phase difference of stroke voltage/current detected by the stroke voltage/current phase difference detective part to calculate a plurality of changing amounts of phase difference. The stroke trembling detective part receives a plurality of the changing amounts of phase difference from the phase difference changing amount calculating part to compare with fixed value to detect stroke trembling thereby. The stroke controller controls operation of the linear compressor by stroke commanding value and receives stroke trembling detective signal from the stroke trembling detective part to change stroke voltage by strength of the intended cooling performance to control the operation of the linear compressor.

    Abstract translation: 目的:提供一种用于检测线性压缩机行程颤动的装置和方法,通过检测行程和电流相位差的变化量来检测行程颤动,防止由于电压波动或中断颤动的噪音导致错误操作。 构成:装置包括线性压缩机(200); 行程电压/电流检测部件(300); 行程电压/电流相位差检测部件(400); 相位差变化量计算部(500); 中风颤抖侦探部件(600); 和行程控制器(100)。 相位差变化量计算部分从行程电压/电流相位差检测部分检测到的行程电压/电流的相位差重复地先前检测到行程电压/电流的相位差,以计算多个相位差的变化量。 行程颤动检测部从相位差变化量计算部接收多个变化量的相位差,与固定值进行比较,从而检测出行程颤动。 行程控制器通过行程指令值控制线性压缩机的运行,并从行程颤动检测部分接收行程颤动检测信号,通过预期冷却性能的强度来改变行程电压,以控制线性压缩机的运行。

    정량토출장치 및 정량토출방법
    215.
    发明授权
    정량토출장치 및 정량토출방법 失效
    恒定速率放电装置和恒定速率放电方法

    公开(公告)号:KR100225842B1

    公开(公告)日:1999-11-01

    申请号:KR1019970012782

    申请日:1997-04-08

    Abstract: 용기내의 수용된 고점도의 재료를 빨아올려 이를 노즐에 압송하는 펌프유닛이 설치되어 있다. 펌프 유닛에는 재료의 빨아 올림과 압송을 행하기 위한 축부재가 접속되어 있고, 이축부재는 실린더로 공급되는 공기의 압력에 의하여 축방향으로 이동가능으로 되어 있다. 펌프유닛내에 빨아올려진 재료는 축부재가 하강하였을때의 압력상승에 의하여 노즐로부터 토출된다. 축부재에는 센서가 병설되어 있고, 센서의 검출결과는 콘트롤러에 부여된다. 콘트롤러는 정량 도포를 한 경우의 기준속도가 설정기능으로 되어, 이 기준속도와 축부재의 실제의 이동속도를 비교하여 압력보정을 하도록 되어 있다.

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