Redundant, dedicated variable speed drive system
First Claim
Patent Images
1. A redundant, modularly expandable pump system comprising:
- a plurality of substantially identical pump modules; and
a control element coupled to the modules wherein the modules each include;
a pump;
variable speed drive circuitry coupled to the pump; and
constant speed drive circuitry coupled to the pump;
wherein the control element includes circuitry for selecting one of the variable speed and constant speed drive circuitry for each module.
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Abstract
A redundant, modular pump system includes a plurality of substantially identical pump modules. Each module includes constant speed drive circuitry, variable speed drive circuitry and a pump. Expansion is accomplished by adding modules. Reliability is enhanced by being able to operate each pump at constant or variable speed irrespective of whether other modules are being operated at different variable or constant speeds. A common, software driven control element activates drives and other devices in the modules to provide fluid on demand at a pre-selected pressure.
84 Citations
13 Claims
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1. A redundant, modularly expandable pump system comprising:
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a plurality of substantially identical pump modules; and
a control element coupled to the modules wherein the modules each include;
a pump;
variable speed drive circuitry coupled to the pump; and
constant speed drive circuitry coupled to the pump;
wherein the control element includes circuitry for selecting one of the variable speed and constant speed drive circuitry for each module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A module for a fluid pumping system comprising:
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a pump with fluid input and output ports and an electrical input port;
a pressure regulating valve coupled to the fluid output port;
dedicated variable speed drive circuitry, with an input port and an output port wherein the output port of the circuitry is coupled to the electrical input port of the pump and is not reassignable to a different module;
dedicated constant speed drive circuitry; and
wherein the drive circuitry includes control input ports for selecting therebetween. - View Dependent Claims (13)
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Specification