Flow control
First Claim
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1. A pumping system for at least one aquatic application, the pumping system comprising:
- a motor coupled to a pump; and
a controller in communication with the motor;
the controller adapted to determine a first motor speed;
the controller adapted to determine a present flow rate using curves of speed versus flow rate for discrete power consumptions;
the controller adapted to generate a difference value between the present flow rate and a reference flow rate;
the controller driving the motor to reach a steady state condition at a second motor speed based on the difference value.
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Abstract
A pumping system for at least one aquatic application comprises a motor coupled to a pump and a controller in communication with the motor. The controller may be adapted to determine a first motor speed, determine a present flow rate using curves of speed versus flow rate for discrete power consumptions, generate a difference value between the present flow rate and a reference flow rate, and/or drive the motor at a second motor speed based on the difference value until reaching a steady state condition.
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Citations
13 Claims
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1. A pumping system for at least one aquatic application, the pumping system comprising:
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a motor coupled to a pump; and a controller in communication with the motor; the controller adapted to determine a first motor speed; the controller adapted to determine a present flow rate using curves of speed versus flow rate for discrete power consumptions; the controller adapted to generate a difference value between the present flow rate and a reference flow rate; the controller driving the motor to reach a steady state condition at a second motor speed based on the difference value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling a pumping system comprising a controller, a motor, and a pump, the controller in communication with the motor, the motor coupled to the pump, the method comprising:
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determining, using curves of speed versus flow rate for discrete power consumptions, a present flow rate based on a first motor speed of the motor and a present power consumption of the motor; and driving the motor to reach a steady state condition at a second motor speed based, on a difference value between a reference flow rate, and the present flow rate. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification