PROBLEM TO BE SOLVED: To prevent or restrict reduction in controlling performance due to wearing at a valve seat of a motor-driven type motor-operated valve.SOLUTION: A motor-operated valve device includes a motor-operated valve having a motor for driving to open or close a valve part, a control unit for controlling the motor and a communicating unit for communicating with an external control device. The control unit starts a controlling operation for the motor-operated valve on the basis of a control instruction got from the external control device and drives the motor in reference to a valve opening or closing point at the valve part and controls the same in such a way that an opening degree of the valve part may become an opening degree corresponding to the control instruction value. The control unit updates in memory in a cumulative manner the number of times of valve closing accompanied by an operation of the motor-operated valve, reads out the accumulative number of times of valve closing when a controlling of the motor-operated valve is started and corrects the settings of a valve opening or closing point on the basis of the accumulative number of times of valve closing, as an index for predicting a change in the valve opening or closing point due to wearing at the valve part.SELECTED DRAWING: Figure 3
【課題】 モータ駆動式の電動弁において、弁座の摩耗による制御性能の低下を防止又は抑制する。【解決手段】 電動弁装置は、弁部を開閉駆動するためのモータを有する電動弁と、そのモータを制御する制御部と、外部制御装置と通信するための通信部とを備える。制御部は、外部制御装置からの制御指令に基づいて電動弁の制御を開始し、弁部の弁開閉点を基準にモータを駆動することにより、弁部の開度が制御指令値に対応した開度となるように制御する。制御部は、弁部の摩耗による弁開閉点の変化を推し量るための指標として、電動弁の作動に伴う閉弁回数を累積的に記憶更新し、電動弁の制御を開始する際にその累積閉弁回数を読み出し、その累積閉弁回数に基づいて弁開閉点の設定を補正する。【選択図】図3
MOTOR-OPERATED VALVE AND MOTOR-OPERATED VALVE CONTROL DEVICE
電動弁および電動弁制御装置
2016-12-08
Patent
Electronic Resource
Japanese
IPC: | F16K VALVES , Ventile / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F24F Klimatisierung , AIR-CONDITIONING |
Electrically operated valve control device and electrically operated valve device provided with same
European Patent Office | 2021
|NTRS | 1994
|NTIS | 1965
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