Pump control system

Details Pump control system Pump control system

2005-09-06

2005-09-06

Freay, Charles G. (Department: 3746)

Pumps

Condition responsive control of pump drive motor

Plural pumps having separate drive motors, supply sources,...

C417S014000, C417S018000, C417S043000, C062S175000, C062S228300

Reexamination Certificate

active

06939109

ABSTRACT:
The present invention provides a system which comprises primary supply pumps and secondary supply pumps and controls pressurized water supply systems, air-conditioning systems, or the like that supply chilled water or hot water using these pumps. In the present invention, calculation is carried out based on measurement signals obtained by measuring pressure, flow rate, open rate of valves, etc. by providing sensors in supply channels.

REFERENCES:
patent: RE27148 (1971-06-01), Schaub
patent: 6370896 (2002-04-01), Sakakibara et al.
patent: 6428282 (2002-08-01), Langley
patent: 6579067 (2003-06-01), Holden

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