Title:
給水装置
Document Type and Number:
Japanese Patent JP7262742
Kind Code:
B2
Abstract:
To provide a water supply device capable of detecting failure of a flow rate detector separately from change of a water supply amount.SOLUTION: A water supply device 1 includes: pump devices 11 each having a pump 32 and a motor 31 driving the pump 32; inverters 51 controlling drive of the motor 31; a flow rate detector 19 mounted on the first side or the second side of the pump 32, having impellers 42 provided with a rotary shaft 41, a plurality of blades 42a fixed to the rotary shaft 41 and rotated by receiving water flow, and a magnets 42b, and a detection part 43 detecting the rotation of the magnets 42b to output a pulse signal by an ON signal and an OFF signal; a storage part 52 storing a threshold value; and a control part 53 measuring ON time and OFF time of the pulse signal, determining the flow rate detector 19 to be failure when the rate of the ON time to the OFF time is different from the threshold value, and controlling the inverters 51 to stop the motors 31.SELECTED DRAWING: Figure 1
Inventors:
Satani Tetsunori
Hideaki Yanagawa
Eigo Yamashita
Tomohiro Ito
Shota Watanabe
Hideaki Yanagawa
Eigo Yamashita
Tomohiro Ito
Shota Watanabe
Application Number:
JP2018238552A
Publication Date:
April 24, 2023
Filing Date:
December 20, 2018
Export Citation:
Assignee:
Kawamoto Manufacturing Co., Ltd.
International Classes:
F04D15/00; F04D15/02
Domestic Patent References:
| JP2014163747A | ||||
| JP2000097740A | ||||
| JP2003166861A | ||||
| JP2001280693A | ||||
| JP2013088399A | ||||
| JP7120289A | ||||
| JP2004278836A |
Attorney, Agent or Firm:
Patent Attorney Corporation Suzue Patent General Office
Masatoshi Kurata
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Shigeru Iino
Sanae Kaneko
Masatoshi Kurata
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Shigeru Iino
Sanae Kaneko