公开(公告)号：EP2806162A1

公开(公告)日：2014-11-26

申请号：EP12863447.4

申请日：2012-12-25

申请人： Ebara Corporation

发明人： KARAKI, Ryotaro ,  MIYAUCHI, Sachiko ,  KONISHI, Yasutaka ,  KANEDA, Kazuhiro ,  TEJIMA, Tomoharu ,  HIGAKI, Nobuhiro

IPC分类号： F04B49/06

CPC分类号： G05D7/0676 ,  F04B49/065

摘要： A water supply apparatus is provided to meet demands for energy saving by controlling the rotational speed of a pump (1), for example, so as to lower the rotational speed in the time zone when water is not used much while avoiding the time zone when water is used in large quantities. The water supply apparatus includes the pump (1) configured to pressurize and deliver water, a frequency converter configured to supply electric power to the pump (1) to operate the pump (1) at a variable speed, and a controller (15) configured to send operating signals to the frequency converter so as to operate the pump (1) either at a first operation or at a second operation with less power consumption than the first operation. The controller (15) is configured to judge whether the operation of the pump (1) should be shifted from the first operation to the second operation based on an operational state of the pump (1).

公开(公告)号：EP2910787A1

公开(公告)日：2015-08-26

申请号：EP13843458.4

申请日：2013-09-30

申请人： Ebara Corporation

发明人： IKEDA, Masayoshi ,  TEJIMA, Tomoharu ,  NINOMIYA, Hironori ,  KINOSHITA, Noboru ,  TAMURA, Hiroyuki ,  TATEISHI, Kazufumi ,  NAKAJIMA, Kaoru

IPC分类号： F04D15/00

CPC分类号： F04D15/0236 ,  F04B49/06 ,  F04B49/08 ,  F04B49/103 ,  F04B2203/0209 ,  F04B2205/05 ,  F04D15/0066 ,  F05D2270/03 ,  F05D2270/3013

摘要： The present invention relates to a water supply apparatus that pressurizes water from a water main pipe to supply the water to a building, such as an apartment building, a commercial building, or the like. The water supply apparatus includes a controller (10) storing a first lower limit value L1 higher than a shutoff rotational speed N0 and a second lower limit value L2 lower than the shutoff rotational speed, which is a rotational speed required for achieving a target pressure PA in a shutoff state. The controller (10) is configured to switch a lower limit of the rotational speed of the pump (1) from the first lower limit value L1 to the second lower limit value L2, and determine that the pump (1) is in a low-flow-rate state if the rotational speed of the pump (1) becomes equal to or lower than the shutoff rotational speed N0 within a predetermined detection time.

摘要翻译： 本发明涉及一种供水装置，其对来自水主管的水进行加压，以将水供应到诸如公寓楼，商业建筑物等的建筑物。 供水装置包括控制器（10），其存储比截止转速N0高的第一下限值L1和低于作为实现目标压力PA所需的转速的切断转速的第二下限值L2 在关闭状态。 控制器（10）被配置为将泵（1）的转速的下限从第一下限值L1切换到第二下限值L2，并且确定泵（1）处于低压 如果在预定检测时间内泵（1）的转速变为等于或低于截止转速N0的流量状态。

公开(公告)号：EP2910787B1

公开(公告)日：2018-07-25

申请号：EP13843458.4

申请日：2013-09-30

申请人： Ebara Corporation

发明人： IKEDA, Masayoshi ,  TEJIMA, Tomoharu ,  NINOMIYA, Hironori ,  KINOSHITA, Noboru ,  TAMURA, Hiroyuki ,  TATEISHI, Kazufumi ,  NAKAJIMA, Kaoru

IPC分类号： F04D15/00 ,  F04D15/02 ,  F04B49/06 ,  F04B49/08 ,  F04B49/10

CPC分类号： F04D15/0236 ,  F04B49/06 ,  F04B49/08 ,  F04B49/103 ,  F04B2203/0209 ,  F04B2205/05 ,  F04D15/0066 ,  F05D2270/03 ,  F05D2270/3013

摘要： The present invention relates to a water supply apparatus that pressurizes water from a water main pipe to supply the water to a building, such as an apartment building, a commercial building, or the like. The water supply apparatus includes a controller (10) storing a first lower limit value L1 higher than a shutoff rotational speed N0 and a second lower limit value L2 lower than the shutoff rotational speed, which is a rotational speed required for achieving a target pressure PA in a shutoff state. The controller (10) is configured to switch a lower limit of the rotational speed of the pump (1) from the first lower limit value L1 to the second lower limit value L2, and determine that the pump (1) is in a low-flow-rate state if the rotational speed of the pump (1) becomes equal to or lower than the shutoff rotational speed N0 within a predetermined detection time.

公开(公告)号：EP2990652A1

公开(公告)日：2016-03-02

申请号：EP14788422.5

申请日：2014-04-22

申请人： Ebara Corporation

发明人： KARAKI, Ryotaro ,  HIGAKI, Nobuhiro ,  HARADA, Yosuke ,  MIYAUCHI, Sachiko ,  KONISHI, Yasutaka ,  KANEDA, Kazuhiro ,  TEJIMA, Tomoharu

IPC分类号： F04D15/00

CPC分类号： F04D15/029 ,  F04D15/0066

摘要： The present invention relates to a pump apparatus which can be suitably used as a water supply apparatus for supplying water to a building. The pump apparatus includes: a pump (2); a motor (3) configured to drive the pump (2); a driver (20) for driving of the motor (3) at variable speed; and a controller (40) configured to control the driver (20) so as to start the pump when the discharge-side pressure of the pump (2) decreases to a predetermined starting pressure and to keep the discharge-side pressure equal to a target pressure on a target pressure control curve. The controller (40) determines a lowest value PL of the discharge-side pressure after the pump (2) is started, calculates a difference ΔP1 between the lowest value PL and a predetermined lower limit Pz of the discharge-side pressure, and corrects the target pressure control curve R based on the difference ΔP1.

摘要翻译： 本发明涉及一种适用于向建筑物供水的供水装置的泵装置。 该泵装置包括：泵（2）; 配置成驱动所述泵（2）的马达（3）; 驱动器（20），用于以可变速度驱动马达（3）;驱动器 以及控制器（40），其被构造成在泵（2）的排出侧压力减小到预定启动压力时控制驱动器（20）以启动泵并且将排出侧压力保持为目标值 目标压力控制曲线上的压力。 控制器（40）在泵（2）启动之后确定排出侧压力的最低值PL，计算最低值PL与排出侧压力的预定下限Pz之间的差值ΔP1，并且校正 目标压力控制曲线R基于差值ΔP1。

公开(公告)号：EP2248954A1

公开(公告)日：2010-11-10

申请号：EP09704247.7

申请日：2009-01-22

申请人： Ebara Corporation

发明人： KOMATSU, Takahide ,  KANEDA, Kazuhiro ,  TEJIMA, Tomoharu ,  HIGAKI, Nobuhiro ,  MIYAUCHI, Sachiko

IPC分类号： E03B11/16 ,  E03B5/00 ,  F04B49/06 ,  F04D15/00

CPC分类号： E03C1/025 ,  F04B41/06 ,  F04D15/0066 ,  F04D15/029 ,  G05B9/03 ,  Y10T137/86131 ,  Y10T137/86163

摘要： The present invention provides a water supply apparatus capable of performing a backup operation, without lowering water supply capability, when a failure has occurred in one control substrate due to surge or noise caused by lightning or due to lifetimes of various sensors, by switching to the other control substrate, and capable of reliably performing the backup operation by means of devices that prevent failure of the control substrates. The water supply apparatus (1) includes: a plurality of pumps (3); a plurality of inverters (INV) each configured to change and control a rotational frequency of a corresponding one of the plurality of pumps (3); and a plurality of control substrates (CN) configured to control the plurality of inverters (INV). When an abnormality occurs in one control substrate, other control substrate backs up the one control substrate to thereby allow the water supply apparatus to continue its operations. The one control substrate, the plurality of inverters (INV), and the other control substrate are connected in series by communication lines. A switch (SW1) for turning on and off a communication is provided on the communication lines.

摘要翻译： 本发明提供一种能够在不降低供水能力的情况下执行备用操作的供水装置，当由于闪电引起的浪涌或噪声或由于各种传感器的寿命而在一个控制基板中发生故障时，通过切换到 其他控制基板，并能够通过防止控制基板故障的装置可靠地执行备用操作。 供水装置（1）包括：多个泵（3）; 多个逆变器（INV），其被配置为改变和控制所述多个泵（3）中的相应一个泵的旋转频率; 以及被配置为控制所述多个逆变器（INV）的多个控制基板（CN）。 当在一个控制基板中发生异常时，其他控制基板支撑一个控制基板，从而允许供水装置继续其操作。 一个控制基板，多个反相器（INV）和另一个控制基板通过通信线串联连接。 在通信线路上设置用于接通和断开通信的开关（SW1）。