Pentair Water Pool and Spa, Inc.

Other

Danfoss Drives A/s

Danfoss Low Power Drives

Danfoss Low Power Drives, a Division of Danfoss Drives A/s

Everett Franklin Cox

Ronald B Robol

Robert W Stiles, Jr

Lars Hoffmann Berthelsen

Kevin Murphy

Gert Kjaer

Daniel J Hruby

Peter Westermann-Rasmussen

Nils-Ole Harvest

Thomas Johnson Ray Safon

Donald Steen

Anuj Saini

Alex Victor

Christopher Ryan Yahnker

Florin Lungeanu

Einar Kjartan Runarsson

Arne Fink Hansen

Alberto Morando

Walter Woodcock, Jr

Robert W Stiles

Walter J Woodcock

Peter Westermann Rasmussen

Robert Stiles

James Miller

Thomas Safon

Niles Ole Harvest

Las Hoffman Berthelsen

Nils Ole Harvest

A pump system for pumping water for pools or other flow systems including a pump, a motor, an electronic assembly, and a cooling system. The cooling system provides heat transfer from the pump system to the process flow. The cooling system includes a heat-pipe arrangement designed to transfer heat to one or more heat sinks.

Water cooled pump and heat transfer system

A variable pore size filter media including an upper plate, a retainer, and a support profile disposed between the upper plate and the retainer. The variable pore size filter media also includes a plurality of wire rings disposed on the support profile and longitudinally distributed within a region between the upper plate and the retainer, the plurality of wire rings being distributed in a non-contiguous manner to form a plurality of spaces therebetween. The variable pore size filter media further includes a plurality of pores defined by the plurality of spaces between the plurality of wire rings and a pore size adjustment mechanism configured to vary a respective distance between each of the plurality of wire rings to increase or decrease a respective size of each of the plurality of pores by increasing or decreasing a size of each of the plurality of spaces.

System and method for a filter system

A filter for use in filtering a fluid slurry that includes particles of varying size, such as pool water including debris, is provided. The filter is in electrical communication with a sensor and includes a housing having an inlet to receive the fluid slurry, an outlet, and an internal chamber. An actuator can be coupled to the filter media to move at least a portion of the filter media to vary a dimension of the pores. The filter also includes a controller connected to the actuator that is capable of receiving a signal from the sensor and controls the actuator to change the dimension of the pores based on the signal.

Embodiments of the invention provide a filter for use in filtering a fluid slurry that includes particles of varying size, such as pool water including debris. The filter is in electrical communication with a sensor and includes a housing having an inlet to receive the fluid slurry, an outlet, and an internal chamber. An actuator can be coupled to the filter media to move at least a portion of the filter media to vary a dimension of the pores. The filter also includes a controller connected to the actuator that is capable of receiving a signal from the sensor and controls the actuator to change the dimension of the pores based on the signal.

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.

Control algorithm of variable speed pumping system

Growing community of inventors

Sanford, NC, United States of America

Everett Franklin Cox