Title:
WELL PUMP UNIT
Document Type and Number:
Japanese Patent JP2018035705
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide water supply equipment, especially, an operation control of a household well pump, in which the reduction amount of a pressure, i.e., the fluctuation in the flow rate, on the discharge side in an operation in the case where much water is used for a short time period in the state where the equipment stops under a predetermined pressure.SOLUTION: If an abrupt pressure drop of a predetermined value or higher is detected at a unit time while being in a stop state of a predetermined pressure or higher, the operation is started even if the pressure value exceeds an operation starting pressure.SELECTED DRAWING: Figure 6
Inventors:
HORIKANE YOSHIKATSU
Application Number:
JP2016167477A
Publication Date:
March 08, 2018
Filing Date:
August 30, 2016
Export Citation:
Assignee:
HITACHI APPLIANCES INC
International Classes:
F04D15/00; F04B49/06; F04B49/08
Attorney, Agent or Firm:
Yuji Toda
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