Rotodynamic pump with permanent magnet coupling inside the impeller
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United States of America Patent
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Dec 9, 2014
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app pub date -
Dec 30, 2011
filing date -
Dec 30, 2011
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Abstract
Rotodynamic pumps having an inner drive permanent magnet coupling disposed inside an impeller are provided. The impeller has a casing having a pumping region generally in a pumping plane that is perpendicular to the rotational axis of the impeller and aligned with a permanent magnet coupling that includes outer magnets that are connected to the impeller and at least partially aligned with the pumping region of the impeller, and inner magnets that are connected to an inner magnet ring and are axially aligned with the outer magnets. A canister is sealed to the casing and separates the outer magnets from the inner magnets.
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