Flow Control

摘要

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.

主权项

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 attempting to drive the motor at a second motor speed based on the difference value until reaching a steady state condition.