Control apparatus of electrically driven valve, electrically driven valve, and electrically driven valve unit using the same
AssigneeFujikoki Corporation
InventorsYusuke ISHIZUKA, Bunta NARUKAWA
Life of this patent
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Abstract
An electrically driven valve includes a valve element configured to move to a direction approaching a valve seat or to a direction separating therefrom, a stepping motor configured to be operated by entering a drive pulse, a driving mechanism configured to drive the valve element by a driving force output from the stepping motor, a nonvolatile storage unit configured to store an amount of hysteresis, and a control unit configured to drive the stepping motor according to an operation instruction information entered from an exterior.
Claims8
A control apparatus of an electrically driven valve comprising:
- a valve element configured to move to a direction approaching a valve seat or to a direction separating therefrom, a stepping motor configured to be operated by entering a drive pulse, a driving mechanism configured to drive the valve element by a driving force output from the stepping motor, a nonvolatile storage unit, and a control unit configured to drive the stepping motor according to an operation instruction information entered from an exterior,
- wherein the storage unit is configured to store an amount of hysteresis, and
- wherein, based on the operation instruction information entered from the exterior, when moving the valve element to a direction that differs from a direction of movement immediately prior thereto, the control unit enters to the stepping motor a drive pulse of an effective number of pulses having added a number of pulses corresponding to the amount of hysteresis stored in the storage unit to a target number of pulses corresponding to a target movement amount of the valve element.
An electrically driven valve comprising:
- a valve element configured to move to a direction approaching a valve seat or to a direction separating therefrom, a stepping motor configured to be operated by entering a drive pulse, a driving mechanism configured to drive the valve element by a driving force output from the stepping motor, a nonvolatile storage unit, and a control unit configured to drive the stepping motor according to an operation instruction information entered from an exterior,
- wherein the storage unit is configured to store an amount of hysteresis, and
- wherein, based on the operation instruction information entered from the exterior, when moving the valve element to a direction that differs from a direction of movement immediately prior thereto, the control unit enters to the stepping motor a drive pulse of an effective number of pulses having added a number of pulses corresponding to the amount of hysteresis stored in the storage unit to a target number of pulses corresponding to a target movement amount of the valve element.
Dependencies are inferred from the claim text.