DRAINAGE PUMP

PROBLEM TO BE SOLVED: To provide a drainage pump that can easily and reliably drain foreign matter by stopping a motor or reversely rotating the motor when the foreign matter is sucked into the drainage pump, and to provide a method of controlling the drainage pump.SOLUTION: A drainage pump comprise...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HAMADA SHOGO, NAKANO SEIICHI, ONODERA YASUAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a drainage pump that can easily and reliably drain foreign matter by stopping a motor or reversely rotating the motor when the foreign matter is sucked into the drainage pump, and to provide a method of controlling the drainage pump.SOLUTION: A drainage pump comprises at least: a three-phase DC motor in which a rotor is constituted of a 2i-pole magnet and a stator is constituted of a three-phase coil; a motor driver for drive-controlling the DC motor; and a detection mechanism for detecting a drive state of the three-phase DC motor. When the detection mechanism detects a constrained state of the motor caused by the caught-in of foreign matter, the motor is stopped for a certain time or reversely rotated.