Title:
WATER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2023086556
Kind Code:
A
Abstract:
To disclose one example of a water supply device capable of reducing a fluctuation in the pressure of supply water, caused when the number of motor pumps to be operated is changed.SOLUTION: A second acceleration time Ta2 during an increase in the number is made shorter than a first acceleration time Ta1 at starting. Thus, when starting an additional motor pump 3, even if there is a sharp increase in the amount of supply water, a great drop in the pressure of the supply water can be suppressed. A second deceleration time Td2 during a reduction in the number is made shorter than a first deceleration time Td1 at the stop of a small amount of water. Thus, when stopping any of the motor pump 3, even if the flow amount of supply water is slightly reduced, the great rise of the pressure of supply water can be suppressed.SELECTED DRAWING: Figure 1
Inventors:
SAKATANI TETSUNORI
WATANABE SHOTA
WATANABE SHOTA
Application Number:
JP2021201154A
Publication Date:
June 22, 2023
Filing Date:
December 10, 2021
Export Citation:
Assignee:
KAWAMOTO PUMP MFG
International Classes:
F04B49/06; F04D15/00
Attorney, Agent or Firm:
Nagoya International Patent Attorney Corporation