Pump control system

Details Pump control system Pump control system

Filed on

2005-09-06

Date issued

2005-09-06

Examiner

Freay, Charles G. (Department: 3746)

Patent Class

Pumps

SubClass

Condition responsive control of pump drive motor

SubSubClass

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

Other Related Categories

C417S014000, C417S018000, C417S043000, C062S175000, C062S228300

Type

Reexamination Certificate

Status

active

Patent number

06939109

Description

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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Also associated with

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