公开(公告)号：JP2006161337A

公开(公告)日：2006-06-22

申请号：JP2004351872

申请日：2004-12-03

Applicant: Ebara Corp ,  Ebara Densan Ltd ,  株式会社荏原製作所 ,  株式会社荏原電産

Inventor： KANEDA KAZUHIRO ,  KOMATSU TAKAHIDE ,  NAKAJIMA KAORU ,  TEJIMA TOMOJI

IPC: E03B5/00 ,  F04B23/02 ,  F04B49/10 ,  F17C13/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for detecting an abnormality in a pressure tank, which enables the accurate detection of the abnormality in the pressure tank, such as a decrease in sealing pressure, and a water supply system which has the function of detecting the abnormality in the pressure tank. SOLUTION: In the method for detecting the abnormality in the pressure tank, a pump stop time from the stop of a pump 14 of the water supply system 10 to the restart of the pump 14 is measured; the pump stop time is compared with a predetermined reference time; the result of this comparison is recorded as the result of the detection of the abnormality when the pump stop time is shorter than the reference time; and it is determined that the abnormality occurs in the pressure tank 36 when the result of the detection of the abnormality is recorded a plurality of times. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种用于检测压力罐异常的方法，其能够精确地检测压力罐中的异常，例如密封压力的降低，以及具有 检测压力罐异常的功能。 解决方案：在用于检测压力罐异常的方法中，测量从供水系统10的泵14的停止到泵14的重启的泵停止时间; 将泵停止时间与预定的参考时间进行比较; 作为比较结果，作为在停泵时间比基准时间短的情况下的异常检测的结果， 并且当多次记录异常的检测结果时，确定在压力罐36中发生异常。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2006090175A

公开(公告)日：2006-04-06

申请号：JP2004275071

申请日：2004-09-22

Applicant: Ebara Corp ,  Ebara Densan Ltd ,  株式会社荏原製作所 ,  株式会社荏原電産

Inventor： HIRAIWA HIRONAO ,  NAKAJIMA KAORU ,  KOMATSU TAKAHIDE ,  SATO MOTOYASU ,  ISHIHARA SEIICHI ,  TAMURA HIROYUKI ,  TEJIMA TOMOJI ,  NAKAHARA SATOSHI ,  HIGAKI NOBUHIRO ,  KURODA KIYOSHI

IPC: F04B49/06 ,  H02M7/48

Abstract: PROBLEM TO BE SOLVED: To provide a water supply device and an inverter capable of flexibly coping with variation of constitution with a low price. SOLUTION: The water supply device 1 is provided with a plurality of pumps 3, and a plurality of inverters 5 variably controlling a rotation frequency of the corresponding pump. The respective inverters 5 are provided with input terminals 540 and 541 for inputting a signal depending on the corresponding pump (an output signal from a sensor 24 provided on the corresponding pump), and an output terminal 542 for outputting a signal depending on the corresponding pump (a signal showing an operating condition of the corresponding pump). COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供能够以低价格灵活应对构成变化的供水装置和逆变器。

解决方案：供水装置1设置有多个泵3和多个逆变器5，其可变地控制相应泵的旋转频率。 各个逆变器5设置有输入端子540和541，用于根据相应的泵（来自设置在相应的泵上的传感器24的输出信号）输入信号，以及输出端子542，用于根据相应的泵输出信号 （表示相应的泵的运转状态的信号）。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2005351268A

公开(公告)日：2005-12-22

申请号：JP2005130029

申请日：2005-04-27

Applicant: Ebara Corp ,  Ebara Densan Ltd ,  株式会社荏原製作所 ,  株式会社荏原電産

Inventor： HIRAIWA HIRONAO ,  NAKAJIMA KAORU ,  KOMATSU TAKAHIDE ,  SATO MOTOYASU ,  ISHIHARA SEIICHI ,  TAMURA HIROYUKI ,  TEJIMA TOMOJI ,  NAKAHARA SATOSHI ,  HIGAKI NOBUHIRO ,  KURODA KIYOSHI

IPC: F04B49/06

Abstract: PROBLEM TO BE SOLVED: To provide a water supply device capable of reducing manufacturing cost by making components necessary minimum.
SOLUTION: This water supply device 1 has a pump 3, an inverter 5 for variably controlling a rotational frequency of the pump 3, and a control part 6 for controlling the inverter 5. The control part 6 has a display part 624 for displaying information on the inverter 5. The inverter 5 has an operation changeover switch 520 for switching automatic operation, stopping and test operation of the corresponding pump 3. The inverter 5 has a power source part 505 for supplying electric power to the inverter 5 and supplying electric power to the control part 6.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种能够通过使部件最小化而降低制造成本的供水装置。

解决方案：该供水装置1具有泵3，用于可变地控制泵3的转速的逆变器5以及用于控制逆变器5的控制部6.控制部6具有显示部624， 在逆变器5上显示信息。逆变器5具有用于切换相应的泵3的自动操作，停止和测试操作的操作切换开关520.逆变器5具有用于向逆变器5供电的电源部505， 控制部分6的电力。版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2004310306A

公开(公告)日：2004-11-04

申请号：JP2003100934

申请日：2003-04-03

Applicant: Ebara Corp ,  Ebara Densan Ltd ,  株式会社荏原製作所 ,  株式会社荏原電産

Inventor： KOMATSU TAKAHIDE ,  NAKAHARA SATOSHI

IPC: G05B19/05 ,  H02P27/06 ,  H02P7/63

Abstract: PROBLEM TO BE SOLVED: To provide a control system capable of transmitting control information between an invertor and controller in different models by using one piece of communication software. SOLUTION: This control system is provided with: an invertor 1 connected to an object 20 to be controlled; a controller 2 for controlling the object 20 to be controlled through the invertor 1; and a digital/analog converter 6 for bi-directionally converting a digital signal and an analog signal. The invertor 1 is connected through a digital/analog converter 6 to the controller 2, and control information is transmitted through the analog signal between the invertor 1 and the digital/analog converter 6, and the control information is transmitted through the digital signal by using a communicating function between the controller 2 and the digital/analog converter 6. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种能够通过使用一块通信软件在不同型号的逆变器和控制器之间传输控制信息的控制系统。 解决方案：该控制系统设置有：连接到要控制的对象20的反相器1; 控制器2，用于控制通过反相器1控制的物体20; 以及用于对数字信号和模拟信号进行双向转换的数/模转换器6。 逆变器1通过数字/模拟转换器6连接到控制器2，控制信息通过逆变器1和数/模转换器6之间的模拟信号传输，控制信息通过数字信号通过使用 控制器2和数/模转换器6之间的通信功能。（C）2005年，JPO和NCIPI

公开(公告)号：JP2004092435A

公开(公告)日：2004-03-25

申请号：JP2002252126

申请日：2002-08-29

Applicant: Ebara Corp ,  株式会社荏原製作所

Inventor： KAWAGUCHI HITOSHI ,  SUGITA MATSUO ,  YAGI KAORU ,  KOMATSU TAKAHIDE ,  NAKANIWA HIROBUMI

IPC: F04B23/04 ,  F04B53/10

Abstract: PROBLEM TO BE SOLVED: To perform maintenance of the other pump while operating one pump by further achieving miniaturization and compactness. SOLUTION: This water supply device has two vertical pumps 12a and 12b arranged in parallel and a passage 120 communicating with a suction pipe 22 inside, and has a suction header 18 arranged on the respective suction sides of the vertical pumps 12a and 12b and connected to the vertical pumps 12a and 12b, and is characterized in that the suction header 18 has two supply ports 126a and 126b respectively connected to respective suction ports of the vertical pumps 12a and 12b and two valve devices 134a and 134b for respectively opening-closing the respective supply ports 126a and 126b, and the valve device 134a is positioned on the upstream side in the suction header 18, and maintains a state of opening the passage 120 in the suction header 18 even if the supply port 126a is opened and closed. COPYRIGHT: (C)2004,JPO