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Patent Searching and Data


Title:
PUMP DEVICE, METHOD FOR CONTROLLING PUMP DEVICE, AND PUMP SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/002067
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a pump device with which it is possible for the stoppage time of an underwater pump when an abnormal operating state arises to be made shorter than in a conventional case. This pump device includes an impeller, and a motor configured to drive a rotating shaft which rotates the impeller, and includes a sensor unit including at least one sensor configured to measure a state within the pump device, and a communication board configured to receive measured data of the at least one sensor from the sensor unit, wherein: the motor is connected to an inverter which is controlled by a control device; the control device is configured to determine the presence or absence of an abnormal state within the pump device on the basis of the measured data of the at least one sensor, and, on the basis of the determination result, to switch the motor between a normal operating mode and a low-output operating mode for operating the motor with a lower output than in the normal operating mode; and the communication board is configured to transmit the received measured data of the at least one sensor to the control device.

Inventors:
NODA MAMIKO (JP)
HIRAMOTO KAZUYA (JP)
TATEISHI OSAMU (JP)
SEKIGUCHI TAKASHI (JP)
Application Number:
JP2020/012907
Publication Date:
January 07, 2021
Filing Date:
March 24, 2020
Export Citation:
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Assignee:
EBARA CORP (JP)
International Classes:
F04D15/00; F04D15/02
Foreign References:
JP2008008204A2008-01-17
JPH0510270A1993-01-19
US6481973B12002-11-19
Attorney, Agent or Firm:
MIYAMAE, Toru et al. (JP)
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