Pump control and method of operating same
AssigneeLiquid Metronics Incorporated
InventorsEnrique L. Kilayko, Liam Ryan
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Abstract
A control for a pump detects an operational characteristic thereof and controls movement of a pump element based on the detected operational characteristic.
Claims20
A control for a pump having a pump element movable over an entire stroke length, comprising:
- a sensor for detecting an operational characteristic of the pump;
- and
- means responsive to the sensor for causing the pump element to move the entire stroke length within a desired length of time.
A control for an electromagnetic metering pump having a coil, an armature movable over a stroke length and a diaphragm coupled to the movable armature, comprising:
- a position sensor for detecting armature position on a continuous basis over the stroke length;
- a driver circuit coupled to the coil and supplying electrical power thereto;
- and
- means coupled between the position sensor and the driver circuit for controlling the driver circuit such that electrical power is delivered to the coil in dependence upon the armature position.
A control for an electromagnetic metering pump having a coil, an armature movable over a stroke length and a diaphragm coupled to the movable armature, comprising:
- a sensor for continuously detecting armature position over a stroke length;
- a driver circuit coupled to the coil and delivering electrical power thereto;
- and
- a programmed processor responsive to the sensor and controlling the driver circuit such that electrical power is delivered to the coil in dependence upon the position of the armature.
A method of controlling a pump having a coil, an armature movable over a range of positions comprising an entire stroke length and a pumping element coupled to the armature, the method comprising the steps of:
- detecting the position of the armature over the entire stroke length;
- and
- providing electric power to the coil based on the position of the armature.
Dependencies are inferred from the claim text.