Flow control

Details Flow control Flow control

2006-12-11

2010-12-07

Kramer, Devon C (Department: 3746)

Pumps

Condition responsive control of pump drive motor

By control of electric or magnetic drive motor

C417S022000, C417S043000, C417S044100, C417S053000

Reexamination Certificate

active

07845913

ABSTRACT:
A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor, means for determining first and second performance values of the pumping system, and means for comparing the first and second performance values. The pumping system further includes means for determining an adjustment value based upon the comparison, means for determining a second motor speed based upon the adjustment value, and means for controlling the motor in response to the second motor speed. In one example, the pumping system includes means for determining a value indicative of a flow rate of water moved by the pump. In addition or alternatively, the pumping system includes a filter arrangement. A method of controlling the pumping system for moving the water of the swimming pool is also disclosed.

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“Better, Stronger, Faster;” Pool & Spa News, Sep. 3, 2004; pp. 52-54, 82-84, USA.

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