Pump control and method of operating same
First Claim
Patent Images
1. 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.
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Accused Products
Abstract
A control for a pump detects an operational characteristic thereof and controls movement of a pump element based on the detected operational characteristic.
146 Citations
20 Claims
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1. A control for a pump having a pump element movable over an entire stroke length, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. 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:
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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. - View Dependent Claims (11, 12, 13, 14)
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15. 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:
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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. - View Dependent Claims (16, 17, 18, 19)
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20. 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:
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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.
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Specification