High voltage high efficiency valve

A high-voltage zone valve control system for a valve that is capable of being opened and closed to flow to an external zone, the control system comprising:

• (a) a brushed, direct current rotary electric motor operably connected to the valve to control opening and closing the valve;
• (b) two sources of DC current connected to the electric motor, the polarity of the DC current determining the direction of rotation of an output shaft of the electric motor;
• (c) an electronic control system comprising a microprocessor for controlling the connection between the electric motor and the two sources of DC current, and
• (d) an electric measuring device capable of
• measuring the electric current flow to the electric motor, and
• sending a first electrical signal to the microprocessor when a predetermined current value is measured;
• wherein the two sources of DC current comprise;
• an external source of DC current, and
• a rechargeable electrical storage system having a total storage capacity sufficient to power the electric motor to fully open or fully close the valve and being capable of receiving and storing DC current and discharging said stored DC current to the electric motor with a polarity reversed from the polarity of the external source of DC current;
• further wherein the microprocessor is capable of
• receiving and processing a second electrical signal from an external sensor for signaling when a desired condition exists in the external zone,
• receiving and processing the first electrical signal from the electric measuring device for signaling that a predetermined electrical stall current is flowing to the electric motor, thus indicating that the valve is at its fully open or fully closed position and cannot move farther, and
• controlling the flow and polarity of DC current to the electric motor when the second electrical signal is received from the external sensor indicating that a desired condition does not exist in the external zone, in order to
• cause the valve to move in a first direction and thus open the valve to change the condition in the zone by allowing flow through the valve, or
• reverse the polarity of the current upon receiving the second signal that the desired condition exists in the external zone, so as to cause the motor to cause the valve to move in the reverse direction to close the valve and thus discontinue changing the condition in the external zone;
• wherein the electric measuring device is capable of measuring a stall current arising when the valve shaft is mechanically stopped from moving further when the motor is powered to turn, and to send a signal to the microprocessor that the stall current is detected, and the microprocessor is configured to send a signal to shut off the power to the system when such stall current is detected, at the fully open or fully closed position of the valve, to stop current flow to the motor, such that electrical power is not provided to the motor when the valve is in the full opened or full closed position;
• and power is directed to the storage system to charge the system to store electrical energy.