Title:
WATER SUPPLY DEVICE, AND METHOD FOR OPERATING WATER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2023134982
Kind Code:
A
Abstract:
To provide a water supply device capable of avoiding a water failure as much as possible.SOLUTION: A water supply device 1 includes at least one pump 3, at least one inverter 5 for variably controlling the rotational frequency of a corresponding pump 3, and a main control substrate 60a and a backup control substrate 60b which can control at least one inverter 5 independently and are connected to each other in a communicable manner. The main control substrate 60a and/or the backup control substrate 60b monitors whether to establish a backup condition for switching control of at least one inverter 5 from the main control substrate 60a to the backup control substrate 60b. The backup control substrate 60b determines whether to take over operation state information of at least one pump 3 from the main control substrate 60a to the backup control substrate 60b in accordance with the established backup condition.SELECTED DRAWING: Figure 5
Inventors:
HARADA YOSUKE
Application Number:
JP2022039966A
Publication Date:
September 28, 2023
Filing Date:
March 15, 2022
Export Citation:
Assignee:
EBARA CORP
International Classes:
F04B49/10; F04D15/00
Attorney, Agent or Firm:
Tetsuya Hirosawa
Isamu Watanabe
Goto Manabu
Mitsuhiro Kanazawa
Isamu Watanabe
Goto Manabu
Mitsuhiro Kanazawa