給水装置

Japanese Patent JP7336971

B2

To provide a feed water device which decides a current proper wait-and-see operation time conforming to lifestyles of people, enhances an energy saving effect, and can prevent the excess of a start frequency of a pump.SOLUTION: A feed water device comprises a control device which performs a water small-quantity stop operation for stopping a pump after performing a pressure accumulation operation of the pump for raising the pressure of the pump at a discharge side up to prescribed pressure via a wait-and-see operation of the pump for confirming that a water small-quantity state is continued when detecting a feed water operation for starting the pump and raising pressure at the discharge side up to prescribed pressure when the pressure of the pump at the discharge side is lowered, and also detecting a water small-quantity state that a use quantity of the water of the pump at the discharge side is reduced. The control device decides the adaptability of a wait-and-see operation time at which the pump performs a wait-and-see operation, or its length at a current water small-quantity stop operation according to a use frequency of the water of the pump at the discharge side at each time band.SELECTED DRAWING: Figure 2

Takahide Ozawa
Yousuke Harada
Naoki Katayama
Kazuma Nishimura

JP2019214921A

September 01, 2023

November 28, 2019

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Ebara Corporation

F04B49/02; E03B5/00; F04B49/06; F04B49/08; G05D16/20

JP9096278A
JP2015025427A
JP2011163298A
JP2006161613A

Sumio Tanai
Yasushi Matsunuma
Yuichiro Shimizu
Hisanori Takahashi

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