Temperature-Compensated Valve
AssigneeEagle Actuator Components GmbH & Co. KG
InventorsRalf Heinrich, Daniel Koch, Siegfried Driemer
Life of this patent
Estimating the term…
Abstract
A valve is provided having a circuit that includes an electrical conductor with a temperature-dependent electrical resistance. The electrical conductor is connected in series to an electrical series resistor, which includes a parallel circuit of an ohmic resistor and an NTC resistor. The electrical conductor includes a coil wire wound into a magnetic coil that is operable to move an armature to open or close the valve. The effect of the operation of the valve itself on the magnetic force of the coil is minimized by arranging the NTC resistor to be thermally coupled with the coil wire.
Claims15
A valve comprising:
- a circuit having an electrical conductor with a temperature-dependent electrical resistance, the electrical conductor being connected in series to an electrical series resistor, wherein the electrical series resistor comprises a parallel circuit of an ohmic resistor and an NTC resistor, and wherein the electrical conductor comprises a coil wire thermally coupled to the NTC resistor.
Dependencies are inferred from the claim text.