Speed control

• US 9,051,930 B2
• Filed: 05/30/2013
• Issued: 06/09/2015
• Est. Priority Date: 08/26/2004
• Status: Active Grant

• Current Assignee: Danfoss Power Electronics A/S (Danfoss A/S), Pentair Water Pool And Spa Incorporated (Pentair Plc (Ireland))
• Original Assignee: Pentair Water Pool And Spa Incorporated (Pentair Plc (Ireland))
• Inventors: Stiles, Robert W. Jr., Berthelsen, Lars Hoffmann, Robol, Ronald B., Yahnker, Christopher, Hruby, Daniel J., Murphy, Kevin, Runarsson, Einar Kjartan, Hansen, Arne Fink, Westermann-Rasmussen, Peter, Lungeanu, Florin
• Primary Examiner(s): LETTMAN, BRYAN MATTHEW
• Application Number:
  US13/906,177
• Publication Number:
  US 20130251542A1
• Time in Patent Office: 740 Days
• Field of Search: 417/33, 417/42, 417/44.1, 417/44.11, 417/45, 417/53, 417/326, 417/63, 450/8, 450/9, 454/11, 454/22, 466/2, 210/167.01, 210/167.11, 210/167.14, 210/167.15, 210/167.16, 222/63, 222/333, 318/268
• US Class Current: 1/1
• CPC Class Codes: E04H 4/1245 Recirculating pumps for swimming pool water
• CPC Class Codes: E04H 4/1281 Devices for distributing chemical products in the water of swimming pools
• CPC Class Codes: E04H 4/129 Systems for heating the water content of swimming pools solar collectors using pools F24S10/17, F24S10/10; by solar radiation F24S20/02
• CPC Class Codes: E04H 4/148 Lighting means
• CPC Class Codes: F04B 49/06 Control using electricity regulating by means of floats actuating electric switches F04B49/04
• CPC Class Codes: F04B 49/103 Responsive to speed
• CPC Class Codes: F04B 49/20 by changing the driving speed
• CPC Class Codes: F04D 13/06 the pump being electrically driven
• CPC Class Codes: F04D 15/0066 by changing the speed, e.g. of the driving engine
• CPC Class Codes: F04D 15/0077 Safety measures F04D15/02 takes precedence
• CPC Class Codes: F04D 27/004 by varying driving speed
• CPC Class Codes: Y10T 29/49817 with other than ancillary treating or assembling

Abstract

A pumping system for moving water of a swimming pool includes a water pump, an infinitely variable speed motor, and an arrangement for operating the motor. In one example, the pumping system includes a memory configured to store a plurality of retained speed values, an arrangement for providing a plurality of retained speed values to the memory, and an arrangement for reading a selected one of the plurality of retained speed values from the memory. In addition or alternatively, the pumping system includes a storage medium for digitally storing a plurality of pre-established motor speed values and an arrangement for receiving input from a user to select one of the pre-established motor speeds. In addition or alternatively, the pumping system further includes an arrangement for restarting operation of the motor at a previously selected speed value when power supplied to the motor is interrupted during operation of the motor. A method for controlling the pumping system is also provided.

Claims

1. A control system for at least one aquatic application controlled by a user, the control system comprising:

a pump coupled to the at least one aquatic application;

a variable speed motor adapted to be coupled to the pump;

a user interface coupled to the variable speed motor, wherein the user interface includes a display screen,

the user interface including a means for receiving input from a user for selecting an operating mode for the control system,

the user interface including at least one user input component to select a first speed value associated with a first time period,

the user interface including at least a second user input component to select a second speed value associated with a second time period,

the user interface including a first visual indicator that illuminates when the control system is operational and a second visual indicator that illuminates to indicate a fault condition,

the user interface including an increase button and a decrease button to alter at least one of the first speed value and the first time period and the second speed value and the second time period,

the user interface including a visual display element to display an operational parameter associated with the pump,

the user interface including a protective cover; and

a controller in communication with the variable speed motor and the user interface, the controller obtaining one of the first speed value and the first time period and the second speed value and the second time period and operating the variable speed motor at a substantially constant speed based on the first speed value.

2. The control system of claim 1, wherein the controller adjusts the speed of the variable speed motor at the end of the first time period to the second speed value.

3. The control system of claim 2, wherein the variable speed motor operates at the second speed value for the second time period.

4. The control system of claim 1, wherein the controller is provided with one or more pre-selected speed values.

5. The control system of claim 4, wherein the pre-selected speed values can be overridden.

6. The control system of claim 1, wherein the user interface includes a third user input component to select a third speed value associated with a third time period.

7. The control system of claim 1, wherein the fault condition is one of an overheat condition, an overcurrent condition, an overvoltage condition, or an obstruction condition.

8. The control system of claim 1, wherein the user interface allows a user to select one of a plurality of operating conditions.

9. The control system of claim 1, wherein the user interface includes a power button.

10. The control system of claim 1, wherein the controller automatically restarts the variable speed motor at a current speed value after a power interruption.

11. The control system of claim 1, wherein the first visual indicator is disposed adjacent the second visual indicator.

12. The control system of claim 1, wherein the motor includes a minimum speed value of greater than 400 RPM and a maximum speed value of about 3450 RPM.

13. A control system for at least one aquatic application controlled by a user, the control system comprising:

a pump coupled to the at least one aquatic application;

a variable speed motor adapted to be coupled to the pump;

a user interface coupled to the variable speed motor,

the user interface including at least one user input component to select a first speed value associated with a first time period,

the user interface including at least a second user input component to select a second speed value associated with a second time period,

the user interface including a first visual indicator that illuminates when the control system is operational and a second visual indicator that illuminates to indicate a fault condition,

the user interface including an increase button and a decrease button to allow a user to set at least one of the first speed value and the first time period and the second speed value and the second time period,

the user interface including a visual display element to display an operational parameter associated with the pump; and

a controller in communication with the variable speed motor and the user interface, the controller obtaining one of the first speed value and the first time period and the second speed value and the second time period and operating the variable speed motor at a substantially constant speed based on the first speed value for the first time period,

wherein user actuation of the second user input component causes the controller to override the first speed value before the end of the first time period and to operate the variable speed motor at a substantially constant speed based on the second speed value.

14. The control system of claim 13, wherein the user interface includes a protective cover.

15. The control system of claim 13, wherein the user interface includes a stop button.

16. The control system of claim 13, wherein the user interface includes a communication component configured to receive one of the first speed value and the first time period and the second speed value and the second time period from a remote device.

17. The control system of claim 13, wherein the controller is provided with one or more default speed values.

18. The control system of claim 13, wherein the user interface includes a display screen.

19. The control system of claim 18, wherein the controller causes the present speed to be displayed on the display screen.

20. The control system of claim 13, wherein the user interface includes a third visual indicator that illuminates when the control system is operating the variable speed motor based on the first speed value, and a fourth visual indicator that illuminates when the control system is operating the variable speed motor based on the second speed value.

21. The control system of claim 20, wherein the third visual indicator is positioned adjacent to the at least one user input component, and the fourth visual indicator is positioned adjacent to the second user input component.

22. A control system for at least one aquatic application controlled by a user, the control system comprising:

a pump coupled to the at least one aquatic application;

a variable speed motor adapted to be coupled to the pump;

a user interface coupled to the variable speed motor, wherein the user interface includes a display screen,

the user interface including at least one user input component to select a first speed value associated with a first time period,

the user interface including at least a second user input component to select a second speed value associated with a second time period,

the user interface including a first visual indicator that illuminates when the control system is operational and a second visual indicator that illuminates to indicate a fault condition,

the user interface including an increase button and a decrease button to alter at least one of the first speed value and the first time period and the second speed value and the second time period,

the user interface including a visual display element to display an operational parameter associated with the pump,

the user interface including a cover; and

a controller in communication with the variable speed motor and the user interface, the controller obtaining one of the first speed value and the first time period and the second speed value and the second time period and operating the variable speed motor at a substantially constant speed based on the first speed value.

23. The control system of claim 22, wherein the controller adjusts the speed of the variable speed motor at the end of the first time period to the second speed value.

24. The control system of claim 23, wherein the variable speed motor operates at the second speed value for the second time period.

25. The control system of claim 22, wherein the controller is provided with one or more pre-selected speed values.

26. The control system of claim 25, wherein the pre-selected speed values can be overridden.

27. The control system of claim 22, wherein the user interface includes a third user input component to select a third speed value associated with a third time period.

28. The control system of claim 22, wherein the fault condition is one of an overheat condition, an overcurrent condition, an overvoltage condition, or an obstruction condition.

29. The control system of claim 22, wherein the user interface allows a user to select one of a plurality of operating conditions.

30. The control system of claim 22, wherein the user interface includes a power button.

31. The control system of claim 22, wherein the controller automatically restarts the variable speed motor at a current speed value after a power interruption.

32. The control system of claim 22, wherein the first visual indicator is disposed adjacent the second visual indicator.

33. The control system of claim 22, wherein the motor includes a minimum speed value of greater than 400 RPM and a maximum speed value of about 3450 RPM.