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Patent Searching and Data


Title:
PUMP CONTROLLING DEVICE
Document Type and Number:
Japanese Patent JP2004263603
Kind Code:
A
Abstract:

To provide a pump controlling device, suppressing the cost of the device capable of properly setting a drive voltage, applied on a drive pump for a pump connected to hot water piping, according to piping resistance of the hot water piping.

Map data 63, 64, and 65 indicating a correlation between the drive voltage of a motor 70 needed to feed hot water to the hot water piping with a head of a given level and the number of revolutions of the motor 70 when the drive voltage is applied are pre-stored in a memory 62. A voltage control means 611 controls a drive voltage, applied on the motor 70 such that the number of revolutions of the motor 70 detected by a number of revolutions sensor 71 when the drive voltage is applied is approximately coincided with the number of revolutions obtained by applying the drive voltage to the map data.


Inventors:
Kono, Shuyu
Shimazaki, Masaru
Application Number:
JP2003000053538
Publication Date:
September 24, 2004
Filing Date:
February 28, 2003
Export Citation:
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Assignee:
RINNAI CORP
International Classes:
F04D15/00; F24D3/10; (IPC1-7): F04D15/00; F24D3/10