Filter loading
First Claim
1. A pumping system for a swimming pool, the pumping system comprising:
- a pump;
a motor coupled to the pump;
a filter coupled to the pump; and
a controller in communication with the motor,the controller determining if a steady state flow rate to achieve a desired number of turnovers in the swimming pool has been reached,the controller calculating a filter loading value based on a clogged filter pressurevalue, an unclogged filter pressure value, and an actual pressure of the pumping system after the steady state flow rate has been reached,the controller decreasing an actual flow rate of the pumping system if the filter loading value is greater than a threshold value to help prolong filter life after the filter has become clogged,the controller decreasing the actual flow rate during at least one subsequent time cycle until at least one of the filter loading value is less than the threshold value and a backwash cycle is completed,the controller increasing the actual flow rate if the filter loading value is less than the threshold value and the actual flow rate is less than the steady state flow rate.
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Accused Products
Abstract
A pumping system for moving water of a swimming pool includes a water pump, a variable speed motor, and a filter arrangement in fluid communication with the pump. The pumping system can also include means for determining a load value indicative of an unclogged filter that permits movement of water through the filter arrangement, means for determining a load value indicative of a clogged filter that inhibits movement of water through the filter arrangement, and means for determining a performance value of the pumping system. The pumping system also includes means for determining a relative loading value of the filter arrangement, means for displaying the relative loading value, and means for controlling the motor in response to the relative loading value. In one example, the load values and performance value can include flow pressure values. A method of moving water of a swimming pool is also disclosed.
448 Citations
22 Claims
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1. A pumping system for a swimming pool, the pumping system comprising:
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a pump; a motor coupled to the pump; a filter coupled to the pump; and a controller in communication with the motor, the controller determining if a steady state flow rate to achieve a desired number of turnovers in the swimming pool has been reached, the controller calculating a filter loading value based on a clogged filter pressure value, an unclogged filter pressure value, and an actual pressure of the pumping system after the steady state flow rate has been reached, the controller decreasing an actual flow rate of the pumping system if the filter loading value is greater than a threshold value to help prolong filter life after the filter has become clogged, the controller decreasing the actual flow rate during at least one subsequent time cycle until at least one of the filter loading value is less than the threshold value and a backwash cycle is completed, the controller increasing the actual flow rate if the filter loading value is less than the threshold value and the actual flow rate is less than the steady state flow rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification