08019479 is referenced by 21 patents and cites 123 patents.

A pumping system includes a pump for moving water. In one aspect, this is in connection with performance of an operation. The system includes a variable speed motor operatively connected to drive the pump. A value indicative of flow rate of water is determined and the motor is controlled to adjust the flow rate indicative value toward a constant. A value indicative of flow pressure is determined and the motor is controlled to adjust the flow pressure indicative value toward a constant. A selection is made between flow rate control and flow pressure control. In another aspect, the pump is controlled to perform a first operation, and is operated to perform a second water operation. Control of operation of the pump to perform the first water operation is altered in response to operation of the pump to perform the second operation.

Title
Control algorithm of variable speed pumping system
Application Number
11/286888
Publication Number
8019479 (B2)
Application Date
November 23, 2005
Publication Date
September 13, 2011
Inventor
Nils Ole Harvest
Nordborg
DK
Florin Lungeanu
Graasten
DK
Alberto Morando
Soenderborg
DK
Arne Fink Hansen
Graasten
DK
Einar Kjartan Runarsson
Soenderborg
DK
Gert Kjaer
Soenderborg
DK
Peter Westermann Rasmussen
Soenderborg
DK
Daniel J Hruby
Sanford
NC, US
Walter J Woodcock Jr
Sanford
NC, US
Kevin Murphy
Quartz Hill
CA, US
Donald Steen
Sanford
NC, US
Everett Cox
Sanford
NC, US
Christopher R Yahnker
Raliegh
NC, US
Ronald B Robol
Sanford
NC, US
Lars Hoffmann Berthelsen
Randers
DK
Robert W Stiles
Holly Springs
NC, US
Agent
Quartes & Brady
Assignee
Pentair Water Pool and
NC, US
IPC
F04B 49/00
G05D 9/12
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