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Title:
A driving device of an automatic feed water pump, a liquid feeder, and an operating method of an automatic feed water pump
Document Type and Number:
Japanese Patent JP6185737
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve it with a simple configuration that a self-priming pump performs a self-priming operation under judgment on its reliability.SOLUTION: An operation device (invertor 30) for a self-priming pump of this invention comprises a current sensor 32 for detecting a driving current of a variable speed motor for rotationally driving a WESTCO pump 500 in variable speed. In addition, the invertor 30 comprises a judgment part 33 for judging whether or not the WESTCO pump 500 performs a self-priming operation or performs a normal operation other than the self-priming operation on the basis of the driving current detected by the current sensor 32. Since the judgment whether or not the WESTCO pump 500 performs a self-priming operation on the basis of the driving current of the variable speed motor, it is possible to improve reliability in judgment by a simple configuration.

Inventors:
Koki Konishi
Ryotaro Karaki
Takahiko Ogawa
Takahide Komatsu
Masakazu Komai
Kenta Tsukakoshi
Application Number:
JP2013072857A
Publication Date:
August 23, 2017
Filing Date:
March 29, 2013
Export Citation:
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Assignee:
Ebara Corporation
International Classes:
F04D15/00; F04D5/00; F04D9/02
Domestic Patent References:
JP1294993A
JP4079990U
JP2008255911A
Attorney, Agent or Firm:
Shinjiro Ono
Toru Miyamae
Yamazaki Kosaku
Yukio Kanegae
Koichi Kushida



 
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