Multiple valve manifold with plural power supplies
AssigneeThe Aro Corporation
InventorsJoseph L. Meloche, Jeffery W. Smith
Life of this patent
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Abstract
A modular valve system in which individual valves are housed in individual, discrete, pluggable units so that they can easily be assembled. Each unit housing a valve also houses the necessary electrical circuity both to control and actuate the valves. The electrical circuit necessary to actuate a valve has its own power supply and is separate from the circuit that generates the control signal which also has its own power supply.
Claims5
In a system comprising multiple electromagnetically actuable valves arranged on a common fluid manifold, the valves being housed in discrete pluggable valve units, each unit including both a fluid circuit and an electrical circuit to supply actuating signals to the electromagnetically actuable valves in response to control signals, the improvement comprising:
- a first electrical power supply to provide the actuating signals at a first voltage and a first current to the electromagnetically actuable valves in a first electrical circuit;
- control means for providing control signals to actuate a selectable number of valves;
- a second power supply for providing the control means with power at a second voltage and second current in a second electrical circuit;
- isolation means for electrically isolating the first and second electrical circuits from one another;
- amplifier means interposed between the first and second electrical circuits to amplify the control signals to a level required for the actuation signals.
Dependencies are inferred from the claim text.