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Title:
STARTING FREQUENCY ABNORMALITY DETECTING METHOD OF PUMP AND WATER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2006169962
Kind Code:
A
Abstract:

To provide a starting frequency abnormality detecting method of a pump and a water supply device having the starting frequency abnormality detecting function of the pump, capable of accurately detecting abnormality of a starting frequency of the pump incorporated into the water supply device.

This invention is the starting frequency abnormality detecting method of the pump 14 incorporated into the water supply device 10, and counts a starting frequency or a stopping frequency of the pump 14 in a predetermined measuring period, and determines that the starting frequency of the pump 14 is abnormal when the frequency exceeds a reference value by comparing the counted frequency with the predetermined reference value.


Inventors:
KANEDA KAZUHIRO
KOMATSU TAKAHIDE
NAKAJIMA KAORU
TEJIMA TOMOJI
Application Number:
JP2004358957A
Publication Date:
June 29, 2006
Filing Date:
December 10, 2004
Export Citation:
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Assignee:
EBARA CORP
EBARA DENSAN LTD
International Classes:
F04B49/10; F04B49/00
Domestic Patent References:
JPS5885386A1983-05-21
JPH03242481A1991-10-29
JP2003121214A2003-04-23
JPH01105150A1989-04-21
JPH0552174A1993-03-02
JP2000238327A2000-09-05
JP2003343476A2003-12-03
JPH09319429A1997-12-12
JPH11241688A1999-09-07
JP2004084582A2004-03-18
JPS5915685A1984-01-26
Attorney, Agent or Firm:
Isamu Watanabe
Shintaro Hotta
Ryoji Kosugi
Tomohiro Mori
Tetsuya Hirosawa



 
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