Frequency and current control for fluid machinery
    2.
    发明授权
    Frequency and current control for fluid machinery 失效
    流体机械的频率和电流控制

    公开(公告)号:US06350105B1

    公开(公告)日:2002-02-26

    申请号:US09402617

    申请日:1999-10-25

    IPC分类号: F04B4906

    CPC分类号: F04D15/0066

    摘要: A fluid machinery for generating a pressure by rotating an impeller with a motor has a frequency converter (F) for supplying electric power to the motor, a detector for detecting a frequency and a current value, and a program for specifying in advance the relationship between the frequency and the current value. A frequency and a current value in an actual operation are compared with the specified program, and the frequency generated by the frequency converter (F) is varied so that an operating point of the fluid machinery approaches the specified program.

    摘要翻译: 用于通过用电动机旋转叶轮产生压力的流体机械具有用于向电动机供电的变频器(F),用于检测频率和电流值的检测器,以及用于预先指定 频率和当前值。 将实际操作中的频率和当前值与指定的程序进行比较,并且变频器(F)产生的频率被改变,使得流体机械的操作点接近指定的程序。

    Fluid machinery
    4.
    发明授权
    Fluid machinery 失效
    流体机械

    公开(公告)号:US06435836B1

    公开(公告)日:2002-08-20

    申请号:US09600866

    申请日:2000-09-07

    IPC分类号: F09B4900

    CPC分类号: F04D15/0209 F04D15/0263

    摘要: The present invention relates to a pump for delivering under pressure various liquids including water. The temperature of the handled liquid in a pump casing (1) is detected by a thermistor (51). If an increase in the temperature per time of the handled liquid is greater than a predetermined value, then the pump is shut down, or the flow rate or pressure of the liquid is changed depending on the temperature of the handled liquid detected by the thermistor based on a predetermined control program.

    摘要翻译: 本发明涉及一种用于在压力下输送各种包括水的液体的泵。 泵壳(1)中被处理液体的温度由热敏电阻(51)检测。 如果处理液体的每次的温度升高大于预定值,则关闭泵,或者根据由热敏电阻器检测到的被处理液体的温度来改变液体的流量或压力 在预定的控制程序上。

    Full-circumferential flow pump
    6.
    发明授权
    Full-circumferential flow pump 失效
    全圆周流量泵

    公开(公告)号:US5857841A

    公开(公告)日:1999-01-12

    申请号:US578897

    申请日:1995-12-27

    摘要: A full-circumferential flow pump includes an outer cylinder and a motor housed in the outer cylinder. The motor has a motor frame, a stator disposed in the motor frame, a main shaft, a rotor mounted on the main shaft and rotatably disposed in the stator. The outer cylinder defines an annular space defined around the motor frame, the outer cylinder having a pump suction port defined therein for introducing a fluid therethrough into the annular space. A pump unit is mounted on an end of the main shaft, and the outer cylinder has a discharge window defined therein for discharging a fluid from the pump unit. A discharge case is mounted on an outer circumferential surface of the outer cylinder in communication with the discharge window, the discharge case having a pump discharge port.

    摘要翻译: 全圆周流动泵包括外筒和容纳在外筒中的马达。 电动机具有电动机架,设置在电动机架中的定子,主轴,安装在主轴上并可旋转地设置在定子中的转子。 外筒限定围绕马达框架限定的环形空间,外筒具有限定在其中的泵吸入口,用于将流体引入环形空间。 泵单元安装在主轴的端部上,外筒具有限定在其中的排出窗口,用于从泵单元排出流体。 排出壳体安装在与排出窗口连通的外筒的外周面上,排出壳体具有泵排出口。

    Group of full-circumferential-flow pumps and method of manufacturing the
same
    7.
    发明授权
    Group of full-circumferential-flow pumps and method of manufacturing the same 失效
    全圆周流泵组及其制造方法

    公开(公告)号:US5797731A

    公开(公告)日:1998-08-25

    申请号:US607264

    申请日:1996-02-21

    摘要: A group of full-circumferential-flow pumps has a group of motors each comprising a main shaft, a rotor mounted on the main shaft, a stator disposed around the rotor, a cylindrical outer motor frame fitted over the stator, and an outer cylinder disposed around the cylindrical outer motor frame with an annular space defined therebetween, a group of pump parts oriented in opposite directions to meet different directions in which the main shafts of the motors rotate, and a group of frequency converters for energizing the motors to rotate at high speeds. In order to meet rating requirements including flow rates and pump heads, the group of motors, the group of pump parts, and the group of frequency converters are combined to provide a group of single-suction-type full-circumferential-flow pumps that are powered by a commercial electric power supply and belong to a first type for applications to pump a fluid at a small rate under a low pump head, and a group of single-suction-type full-circumferential-flow pumps that are rotatable at high speeds and belong to a second type for applications to pump a fluid at a small rate under a high pump head.

    摘要翻译: 一组全圆周流泵具有一组电动机,每个电动机包括主轴,安装在主轴上的转子,设置在转子周围的定子,安装在定子上的圆柱形外部电动机框架和设置在外部圆筒状外筒上的外筒 围绕圆筒形的外部马达框架具有限定在其间的环形空间,一组泵组件以相反方向定向,以满足电动机主轴旋转的不同方向,以及一组变频器,用于激励电动机高速旋转 速度。 为了满足流量和泵头的等级要求,组合电机,泵组和变频器组组合提供一组单吸式全圆周流泵, 由商用电源供电,属于第一种,用于在低泵头下以较小的速率泵送流体的应用,以及可高速旋转的一组单吸式全周向流量泵 并且属于用于在高泵头下以较小速率泵送流体的应用的第二类型。

    Full-circumferential flow pump
    8.
    发明授权
    Full-circumferential flow pump 失效
    全圆周流量泵

    公开(公告)号:US5616013A

    公开(公告)日:1997-04-01

    申请号:US562155

    申请日:1995-11-22

    摘要: A full-circumferential flow pump includes a motor having a stator, a shaft rotatably disposed in the stator, and a rotor mounted on the shaft for rotation relative to the stator, an outer frame barrel disposed around the stator, an outer cylindrical pump casing disposed around the outer frame barrel with an annular space defined therebetween, and a pump assembly mounted on an end of the shaft for pumping a fluid into the annular space or pumping a fluid introduced from the annular space. The full-circumferential flow pump further includes an inner casing provided in the outer cylindrical pump casing for accommodating the impeller and a resilient seal disposed between the outer cylindrical pump casing and the inner casing for preventing a pumped fluid in the outer cylindrical pump casing from leaking towards a suction side of the impeller.

    摘要翻译: 全圆周流泵包括具有定子的电机,可旋转地设置在定子中的轴和安装在轴上的转子,用于相对于定子旋转的转子,设置在定子周围的外框架筒,外圆柱形泵壳体, 围绕所述外框架桶,其间限定有环形空间,以及安装在所述轴的端部上的泵组件,用于将流体泵送到所述环形空间中或泵送从所述环形空间引入的流体。 全圆周流泵还包括设置在外圆柱形泵壳体中用于容纳叶轮的内壳和设置在外圆柱形泵壳和内壳之间的弹性密封件,用于防止外圆柱形泵壳中的泵送流体泄漏 朝向叶轮的吸入侧。