Method and device for controlling at least one valve
First Claim
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1. A method of controlling a valve that is actuated by an activation signal that represents a current through a valve coil, the method comprising:
- detecting a leak in a control system that includes the valve, the leak being related to a malfunction of the valve; and
outputting the activation signal of at least one of a selected length, an intensity, and a rate of change, to activate the valve in response to the detected leak, so as to one of;
briefly open and close the valve, the activation signal being generated to briefly open the valve when a pressure differential across the valve exceeds a selected magnitude;
briefly open an inlet valve and a discharge valve in response to a small pressure differential; and
guide a valve ball onto a valve seat with great speed.
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Abstract
A method and a device for controlling at least one valve, in response to a detected leak in the system including the valve. An activation signal is generated which opens the valve briefly for flushing purposes and closes it again, or moves the valve ball at great speed onto the valve seat.
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Citations
10 Claims
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1. A method of controlling a valve that is actuated by an activation signal that represents a current through a valve coil, the method comprising:
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detecting a leak in a control system that includes the valve, the leak being related to a malfunction of the valve; and
outputting the activation signal of at least one of a selected length, an intensity, and a rate of change, to activate the valve in response to the detected leak, so as to one of;
briefly open and close the valve, the activation signal being generated to briefly open the valve when a pressure differential across the valve exceeds a selected magnitude;
briefly open an inlet valve and a discharge valve in response to a small pressure differential; and
guide a valve ball onto a valve seat with great speed. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9)
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6. A method of controlling a valve that is actuated by an activation signal that represents a current through a valve coil, the method comprising:
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detecting a leak in a control system that includes the valve, the leak being related to a malfunction of the valve; and
outputting an activation signal of at least one of a selected length, an intensity, and a rate of change, to activate the valve in response to a detected leak, so as to one of;
briefly open and close the valve, the activation signal being generated to briefly open the valve when a pressure differential across the valve exceeds a selected magnitude;
briefly open an inlet valve and a discharge valve in response to a small pressure differential; and
guide a valve ball onto a valve seat with great speed;
wherein, in response to a pressure differential across the valve that is less than the selected magnitude, the current is briefly one of fed to and cut off from the valve, so that the valve ball is moved into the valve seat at high speed.
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10. A device for controlling a valve, comprising:
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a control unit that includes at least one computer arrangement to provide an activation signal for actuating the valve;
wherein the at least one computer arrangement includes;
a first arrangement to detect a leak in a control system that includes the valve, the leak being related to a malfunction of the valve; and
a second arrangement to output the activation signal of at least one of a selected length, a intensity, and a rate of change to activate the valve in response to the detected leak, so as to one of;
briefly open and close the valve, the activation signal being generated to briefly open the valve when a pressure differential across the valve exceeds a selected magnitude;
briefly open an inlet valve and a discharge valve in response to a small pressure differential; and
guide a valve ball onto a valve seat with great speed.
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Specification