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Patent Searching and Data


Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/094304
Kind Code:
A1
Abstract:
The present invention relates to a pump device provided with an underwater pump unit. The pump device is provided with: an underwater pump unit (1) provided with a pump (2) and an electric motor (3); a pressure sensor (13) which measures the discharge side pressure of the pump (2); and a control unit (20) which controls the rotational speed of the pump (2) on the basis of the difference between the measured value of the discharge side pressure and a target pressure value. When the control unit (20) first causes the pump (2) to operate after power has been supplied to the control unit (20), the control unit (20) executes slow-start control to increase the target pressure value to a set pressure value in accordance with a predetermined rate of increase.

Inventors:
KOMAI MASAKAZU (JP)
OZAWA TAKAHIDE (JP)
OKANDA KAZUMI (JP)
HATABAYASHI KIMI (JP)
Application Number:
PCT/JP2016/075654
Publication Date:
June 08, 2017
Filing Date:
September 01, 2016
Export Citation:
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Assignee:
EBARA CORP (JP)
International Classes:
F04D15/00; F04B49/02; F04D13/08
Foreign References:
JP2012255399A2012-12-27
JP2000345991A2000-12-12
JPS6027800A1985-02-12
Attorney, Agent or Firm:
WATANABE, Isamu et al. (JP)
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