Arrangement for conveying fluids
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United States of America Patent
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Sep 1, 2009
Grant Date -
Mar 13, 2008
app pub date -
Sep 30, 2005
filing date -
Nov 23, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An arrangement for conveying fluids has a fluid pump (174) having a rotatably journaled pump wheel (172) that is joined to a first permanent magnet (186) and an electronically commutated internal-rotor motor (152) having a stator (154) and a rotor (156), as well as a shaft (160) associated with the latter, which shaft is journaled rotatably relative to the stator (154) . The arrangement also has a second permanent magnet (184) joined nonrotatably to the rotor (156) , which magnet coacts with the first permanent magnet (186) to serve as a magnetic coupling. A separating can (170, 180, 188) hermetically separates the first permanent magnet (186) arranged inside the separating can, from the second permanent magnet (184) arranged outside the separating can. A fan wheel (218) mounted on the motor shaft, provides cooling air.
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