LIQUID CIRCULATION DEVICE

PROBLEM TO BE SOLVED: To provide a liquid circulation device which includes a plurality of pumps in a liquid circuit and in which resistance of water passing through the pumps each driven by a motor is reduced.SOLUTION: When a second pump 6 driven by an electric motor is stopped, that is, when a sta...

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Bibliographische Detailangaben
1. Verfasser:	HASHIMURA NOBUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a liquid circulation device which includes a plurality of pumps in a liquid circuit and in which resistance of water passing through the pumps each driven by a motor is reduced.SOLUTION: When a second pump 6 driven by an electric motor is stopped, that is, when a stator 40 is not energized, a force (preload) causing a magnet 32 and the stator 40 to attract each other is generated by a magnetic force of the magnet 32, and thus the rotor 30 is moved to a position away from an inlet 100. This enlarges a clearance a, thereby reducing resistance of liquid passing through the second pump 6.