Patent ID: 7607895
Filing Date: 2009-10-27
Classification: A47L,D06F,F04D

Abstract:
1. A fluid circulation pump with synchronous motor, equipped with fluid heating means, for washing machines, said fluid circulation pump comprising: a stator equipped with pole shoes with corresponding windings; a rotor, partially plunging in an operating fluid and equipped with a permanent magnet that is rotation-driven by an electromagnetic field generated by the stator, wherein said rotor is insulated tight with respect to said stator by a shell closed at a top thereof by a volute housing an impeller for the operating fluid circulation; and a magnetic flux sensor of said rotor, a control unit equipped with drawing means to draw, by a signal provided from said magnetic flux sensor, parameters of a temperature and a flow rate of said operating fluid, and comparing means to compare said parameters with a reference value and to output an electric signal to be used to cut off a power supply of said fluid heating means upon reaching a threshold of said parameters.