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Patent Searching and Data


Title:
PUMP DRIVING DEVICE AND CONTROL METHOD FOR PUMP DRIVING DEVICE
Document Type and Number:
Japanese Patent JP2004232607
Kind Code:
A
Abstract:

To provide a pump driving device, having high versatility and realizing energy-saving and reduction of size by restraining extra pressure loss of a pump due to a flow change caused by configuration of a piping system and opening and closing of a valve.

This pump driving motor 6 includes a motor control circuit 7 adapted to control the pump pressure according to a flow rate on the basis of correlation (ω=ωO + coefficient A × motor current I) (wherein ωO is a motor basic rotational frequency) that when a flow rate of a fluid flowing through a pump chamber 2 changes, the rotational frequency of a rotary blade 3 body linearly changes depending on increase/decrease of a motor current.


Inventors:
Tajima, Masaharu
Application Number:
JP2003000024826
Publication Date:
August 19, 2004
Filing Date:
January 31, 2003
Export Citation:
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Assignee:
SHINANO KENSHI CO LTD
International Classes:
F04D15/00; (IPC1-7): F04D15/00