Control algorithm of variable speed pumping system

Patent metadata

Field	Value
Publication number	US-9404500-B2
Application number	US-201113230678-A
Country	US
Kind code	B2
Filing date	Sep 12, 2011
Priority date	Aug 26, 2004
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A pumping system includes a pump for moving water. In one aspect, this is in connection with performance of an operation. The system includes a variable speed motor operatively connected to drive the pump. A value indicative of flow rate of water is determined and the motor is controlled to adjust the flow rate indicative value toward a constant. A value indicative of flow pressure is determined and the motor is controlled to adjust the flow pressure indicative value toward a constant. A selection is made between flow rate control and flow pressure control. In another aspect, the pump is controlled to perform a first operation, and is operated to perform a second water operation. Control of operation of the pump to perform the first water operation is altered in response to operation of the pump to perform the second operation.

First claim

We claim:

1. A pumping system for at least one aquatic application receiving inputs from a user, the pumping system comprising:
a pump;
a variable speed motor coupled to the pump;
a controller in communication with the variable speed motor, the controller configured to:
determine a start time and a stop time of a filter cycle based on the inputs received from the user,
determine a start time and a stop time of an additional operation,
one of (a) eliminate the filter cycle, (b) adjust the start time of the filter cycle, and (c) adjust the stop time of the filter cycle, when the additional operation overlaps the filter cycle, and
operate the variable speed motor to perform at least one of the filter cycle and the additional operation.

2. The pumping system of claim 1 , wherein the controller is configured to adjust the start time of the filter cycle to coincide with the stop time of the additional operation when the additional operation partially overlaps the filter cycle.

3. The pumping system of claim 1 , wherein the controller is configured to eliminate the filter cycle when the additional operation completely overlaps the filter cycle.

4. The pumping system of claim 1 , and further comprising a filter coupled to the pump.

5. The pumping system of claim 1 , and further comprising a user interface configured to receive the inputs from the user.

6. The pumping system of claim 5 , wherein the inputs from the user include the start time and the stop time of the filter cycle.

7. The pumping system of claim 6 , wherein the start time and the stop time of the filter cycle are set times of day within a 24-hour period.

8. The pumping system of claim 5 , wherein the inputs from the user include the start time and the stop time of the additional operation.

9. The pumping system of claim 5 , wherein the inputs from the user include a manual mode, wherein the controller is configured to operate the variable speed motor outside of the filter cycle and the additional operation when the manual mode is selected.

10. The pumping system of claim 1 , wherein the additional operation includes at least one of a cleaning operation and a secondary filter cycle.

Assignees

• Stiles Jr Robert W
• Robol Ronald B
• Berthelsen Lars Hoffmann
• Harvest Nils-Ole
• Cox Everett
• Steen Donald
• Murphy Kevin
• Hruby Daniel J
• Westermann-Rasmussen Peter
• Kjaer Gert
• Pentair Water Pool & Spa Inc

Inventors

• Stiles Jr Robert W
• Robol Ronald B
• Berthelsen Lars Hoffmann
• Harvest Nils-Ole
• Cox Everett
• Steen Donald
• Murphy Kevin
• Hruby Daniel J
• Westermann-Rasmussen Peter
• Kjaer Gert

Classifications

• F04D15/0066 Primary

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

• F04D15/0088

  Testing machines · CPC title

• F04D9/004

  Priming of not self-priming pumps · CPC title

• F04B49/065

  and making use of computers · CPC title