Pumping system with power optimization

Patent metadata

Field	Value
Publication number	US-11073155-B2
Application number	US-201815939715-A
Country	US
Kind code	B2
Filing date	Mar 29, 2018
Priority date	Aug 26, 2004
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A method of operating a pumping system for an aquatic application based upon performance of multiple water operations is disclosed. The method includes providing a pump and a motor coupled to the pump, and a controller including a variable speed drive that is in communication with the motor. The method also includes: operating the motor in accordance with a first water operation, wherein the first water operation includes a first start time, end time, and water flow rate; operating the motor in accordance with a second water operation, wherein the second water operation includes a second start time, end time, and water flow rate; and altering the first water operation in response to performance of the second water operation.

First claim

We claim:

1. A method of operating a pumping system for at least one aquatic application based upon performance of a plurality of water operations, the method comprising:
providing a pump and a motor coupled to the pump;
providing a controller including a variable speed drive that is in communication with the motor;
determining an operational time period, the operational time period including a first water operation and a second water operation;
dynamically monitoring a volume of water moved by the pump during the operational time period;
operating the motor in accordance with the first water operation, wherein the first water operation includes a first start time, a first end time, and a first water flow rate;
operating the motor in accordance with the second water operation, wherein the second water operation includes a second start time, a second end time, and a second water flow rate; and
altering the first water operation in response to performance of the second water operation in order to achieve a target volume of water to be moved by the pump during the operational time period.

2. The method of claim 1 , wherein one of the first end time or the first water flow rate of the first water operation is altered in response to performance of the second water operation.

3. The method of claim 2 , wherein the first end time is reduced.

4. The method of claim 1 further including the step of altering the operational time period based on the volume of water moved by the pump.

5. The method of claim 1 further including the step of adjusting the first end time based on the second flow rate.

6. A method of operating a pumping system having a water pump coupled to and driven by an electric variable-speed motor configured to receive operational commands from a controller having a variable-speed drive, comprising:
operating the water pump at a target flow rate to accomplish a target volume of water flow through the water pump in a target time period;
measuring a target power consumption of the electric variable-speed motor while operating the water pump at the target flow rate to accomplish the target volume of water flow through the water pump in the target time period;
operating the water pump at a water operation flow rate to accomplish a water operation;
measuring a water operation power consumption of the electric variable-speed motor while operating the water pump at the water operation flow rate to accomplish the water operation;
determining a cumulative volume of water movement through the water pump based on the target power consumption and the water operation power consumption;
adjusting at least one of the target flow rate to an adjusted flow rate and the target time period to an adjusted time period to account for the cumulative volume of water movement; and
operating the water pump to account for at least one of the adjusted flow rate and the adjusted time period.

7. The method of claim 6 wherein measuring the target power consumption of the electric variable-speed motor while operating the water pump at the target flow rate to accomplish the target volume of water flow through the water pump in the target time period comprises repeatedly monitoring the measured target power consumption.

8. The method of claim 6 wherein measuring the target power consumption of the electric variable-speed motor while operating the water pump at the target flow rate to accomplish the target volume of water flow through the water pump in the target time period comprises measuring an electrical current provided to the electric variable-speed motor.

9. The method of claim 6 wherein measuring the target power consumption of the electric variable-speed motor while operating the water pump at the target flow rate to accomplish the target volume of water flow through the water pump in the target time period comprises measuring an electrical voltage provided to the electric variable-speed motor.

10. The method of claim 6 wherein operating the water pump at the water operation flow rate to accomplish the water operation comprises operating to accomplish running a vacuum, a heater, or a filter for a water operation time period.

11. The method of claim 6 wherein operating the water pump at the target flow rate to accomplish the target volume of water flow through the water pump in the target time period comprises operating the water pump at a minimum speed that achieves the target volume of water flow through the water pump at the expiration of the target time period.

12. The method of claim 6 wherein adjusting the target time period to the adjusted time period comprises curtailing a duration of the target time period such that the adjusted time period is less than the target time period.

13. The method of claim 6 wherein adjusting the target time period to the adjusted time period comprises prolonging a duration of the target time period such that the adjusted time period is greater than the target time period.

14. The method of claim 6 wherein adjusting the target flow rate to the adjusted flow rate comprises increasing a volumetric rate of the target flow rate such that the adjusted flow rate is greater than the target flow rate.

15. The method of claim 6 wherein adjusting the target flow rate to the adjusted flow rate comprises decreasing a volumetric rate of the target flow rate such that the adjusted flow rate is less than the target flow rate.

16. The method of claim 6 wherein determining the cumulative volume of water movement through the water pump based on the target power consumption and the water operation power consumption comprises determining the cumulative volume of water movement in real time.

17. The method of claim 6 further comprising shutting off the motor when the cumulative volume of water movement equals the target volume of water flow through the water pump.

Assignees

• Pentair Water Pool & Spa Inc
• Danfoss Power Electronics As

Inventors

• Stiles Jr Robert W
• Berthelsen Lars Hoffmann
• Robol Ronald B
• Yahnker Christopher R
• Runarsson Einar Kjartan

Classifications

• F04D1/00

  Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (adapted for pumping specific fluids F04D7/00; priming or boosting F04D9/00) · CPC title

• F04D13/06

  the pump being electrically driven · CPC title

• E04H4/1245

  Recirculating pumps for swimming pool water · CPC title

• F04D15/0066 Primary

  by changing the speed, e.g. of the driving engine · CPC title

• F04B49/20

  by changing the driving speed · CPC title