Title:
FEED WATER DEVICE AND CONTROL METHOD OF FEED WATER DEVICE
Document Type and Number:
Japanese Patent JP2017141771
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To propose a feed water device and a control method of the feed water device with a high energy efficiency and capable of maintaining the pressure of a faucet by avoiding the cut-off of water.SOLUTION: A feed water device comprises: a pump for transferring water; a first pressure sensor; a second pressure sensor; and a control part. The first pressure sensor detects the discharge side pressure of the pump, and the second pressure sensor detects a feed water pressure supplied to a water supply target. The control part includes a first control mode and a second control mode as a pump operation control mode. During the first control mode, the control part controls the pump so that the discharge side pressure becomes a first target pressure on the target pressure control curve based on the discharge side pressure from the first pressure sensor. Also during the second control mode, the control part controls the pump so that the feed water pressure becomes a second target pressure different from the first target pressure based on the feed water pressure from the second pressure sensor.SELECTED DRAWING: Figure 1
Inventors:
HARADA YOSUKE
TEMMYO DAICHI
TAKEMURA HIDEAKI
TEMMYO DAICHI
TAKEMURA HIDEAKI
Application Number:
JP2016024621A
Publication Date:
August 17, 2017
Filing Date:
February 12, 2016
Export Citation:
Assignee:
EBARA CORP
International Classes:
F04D15/00; F04B49/06; F04B49/08; F04D13/12
Domestic Patent References:
| JP2006031535A | 2006-02-02 | |||
| JPS53139201A | 1978-12-05 | |||
| JP2009052532A | 2009-03-12 | |||
| JP2014225101A | 2014-12-04 | |||
| JP2001330900A | 2001-11-30 | |||
| JP2009109271A | 2009-05-21 | |||
| JPS608662A | 1985-01-17 |
Attorney, Agent or Firm:
Shinjiro Ono
Toru Miyamae
Yukio Kanegae
Makoto Watanabe
Tobata Obata
Toru Miyamae
Yukio Kanegae
Makoto Watanabe
Tobata Obata