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    • 4. 发明专利
    • Water supply device
    • 供水设备
    • JP2009197792A
    • 2009-09-03
    • JP2008330080
    • 2008-12-25
    • Ebara Corp株式会社荏原製作所
    • KOMATSU TAKAHIDEKANEDA KAZUHIROTEJIMA TOMOJIHIGAKI NOBUHIROMIYAUCHI SHOKO
    • F04B49/10E03B5/00F04B49/06
    • E03C1/025F04B41/06F04D15/0066F04D15/029G05B9/03Y10T137/86131Y10T137/86163
    • PROBLEM TO BE SOLVED: To provide a water supply device making another control board take over control of one control board without drop of water supply capacity even if one control board does not function due to generation of noise, surge caused by lightening or the like, and life termination of various kinds of sensors, and ensuring take-over of the control by devising the control board in such a manner that the control boards do not fail simultaneously. SOLUTION: The water supply device 1 includes a plurality of pumps 3, a plurality of inverters INV for variably controlling rotation frequency of the respective pumps 3, and a plurality of control boards CN for controlling the plurality of inverters. If one of the control boards fails, the other takes over the control in place of the one control board so as to continue the operation. The one control board is connected in series via the plurality of inverters through communication cables to the other. A switch SW1 for starting/stopping the communication is installed in a communication cable. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供一个供水装置,即使一个控制板由于产生噪声而不起作用,另一个控制板也可以控制一个控制板,而不会降低供水能力,因此减轻浪涌引起的浪涌或 以及各种传感器的寿命终止,并且通过以控制板不同时失效的方式设计控制板来确保接管控制。 供水装置1包括多个泵3,用于可变地控制各个泵3的旋转频率的多个反相器INV和用于控制多个逆变器的多个控制板CN。 如果其中一个控制板发生故障,则另一个控制板代替一个控制板进行控制,以继续操作。 一个控制板通过多个逆变器通过通信电缆串联连接到另一个。 用于启动/停止通信的开关SW1安装在通信电缆中。 版权所有(C)2009,JPO&INPIT