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Title:
WATER FEED SYSTEM
Document Type and Number:
Japanese Patent JP2013256867
Kind Code:
A
Abstract:

To provide a water feed system configured to solve problems by enabling a water feed system side to have a pressure target value, an initial inverter frequency (target flow rate) and a function for designating the number of necessary pumps.

A water feed system comprises: a setting means for setting parameters such as a flow rate target value necessary for a load of each water feed implement, a pressure target value and rotation speeds corresponding to these values; a first communication means for transmitting an operation status of the water feed implement; and a second communication means arranged at a control device. When the second communication means receives signals from the first communication means, the control device acquires a maximum flow rate of a load obtained by totalizing the flow rate target values of the respective water feed devices corresponding to the received signals, acquires the number of pumps for performing constant-speed control from the maximum flow rate of the load and a maximum water feed amount, and a remaining water amount, acquires an initial speed of the pump corresponding to the remaining water amount, constant-speed controls the prescribed number of the pumps, and constant-speed controls the other pumps at the initial speed.


Inventors:
SATO KOICHI
Application Number:
JP2012131457A
Publication Date:
December 26, 2013
Filing Date:
June 11, 2012
Export Citation:
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Assignee:
HITACHI IND EQUIPMENT SYS
International Classes:
F04B49/06; F04B49/08; F04D15/00
Domestic Patent References:
JPS60142076A1985-07-27
JPS57182810A1982-11-10
JPS62129598A1987-06-11
JPS60125789A1985-07-05
JP2005048660A2005-02-24
JPH08291798A1996-11-05
Attorney, Agent or Firm:
Polaire Patent Business Corporation