Fluid circulation pump with synchronous motor, equipped with heating means of the fluid, in particular for washing machines

摘要

A fluid circulation pump ( 10 ) with synchronous motor ( 14 ), equipped with fluid heating means ( 40 ), particularly for washing machines or the like, of the type comprising a rotor ( 18 ), equipped with a permanent magnet being rotation-driven by the electromagnetic field generated by a stator ( 15 ) equipped with pole shoes ( 20 ) with the corresponding windings. This pump ( 10 ) has also a magnetic flux sensor ( 22 ) of the rotor ( 18 ) and a control unit ( 24 ) comprising means ( 35 ) to draw from the magnetic flux sensor ( 22 ) at least a typical parameter of said fluid and means ( 36 ) to compare this parameter with a reference value and to cut the power supply of the heating means ( 40 ) off upon reaching a threshold of the predetermined reference parameter.