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US 2007/0177985 A1Published application
Integral sensor and control for dry run and flow fault protection of a pump
OwnerJames Walls, Jeff Cain +1inventors
InventorsJames Walls, Jeff Cain, John Fong
Life of this patent
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Abstract
A pump providing fault protection based on a controller receiving sensed pressure values from a pressure sensor included in a cavity of the pump, so as to be integral with the pump.
Claims8
A pump system, comprising:
- a pressure sensor, for providing a signal indicative of a sensed pressure;
- a controller, responsive to the signal indicative of a sensed pressure, and also responsive to electrical power, for regulating the electrical power based on at least the sensed pressure;
- and
- a pump unit, having a pumping mechanism and an electrical motor for driving the pumping mechanism, responsive to the regulated electrical power;
- wherein the pumping mechanism includes an inlet cavity and an outlet cavity on either side of a pumping structure, and the pressure sensor is disposed in the inlet cavity and/or the outlet of the pumping mechanism and is communicatively coupled to the controller.
2 more elements
A pump system, comprising:
- a pressure sensor, for providing a signal indicative of a sensed pressure;
- means, responsive to the signal indicative of a sensed pressure, and also responsive to electrical power, for regulating the electrical power based on at least the sensed pressure;
- and
- a pump unit, having a pumping mechanism and an electrical motor for driving the pumping mechanism, responsive to the regulated electrical power;
- wherein the pumping mechanism includes an inlet cavity and an outlet cavity on either side of a pumping structure, and the pressure sensor is disposed in the inlet cavity and/or the outlet of the pumping mechanism and is communicatively coupled to the controller.
2 more elements
A method, comprising:
- sensing pressure at either an inlet cavity or an outlet of a pumping mechanism of a pump unit having an electrical motor;
- and
- regulating electrical power to the electrical motor based on at least the sensed pressure.
Dependencies are inferred from the claim text.