Pump having an integrated electronically commutated direct current motor
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United States of America Patent
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May 22, 2018
Issued Date -
N/A
app pub date -
May 3, 2011
filing date -
May 6, 2010
priority date (Note) -
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Abstract
A pump with an integral, electronically commutated, direct-current motor (2) with permanent magnetic inner rotor disposed in a wet chamber, which forms with a turbine pump wheel (22) a compact, structural pump-rotor unit (3), a claw-pole stator (9) positioned in a dry chamber (4), the claw-pole stator (9) having four claw-pole plates (6, 6′) made of a soft magnetic material, a ring-shaped winding (12) and a claw-pole stator (9) including a soft magnetic back-iron ring (13) mounted on the claw-pole plates (6, 6′) and disposed around the winding (12) and a separating can (10), which separates the dry chamber from the wet chamber (5), characterized in that the claw-pole plates (6, 6′) and additional claw-pole plates (66, 66′) are stamped and bent together, in which a plate strip for the additional claw-pole plates (66, 66′) contains a central borehole from a previous work step.
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