FAN COMPRISING AN ELECTRONICALLY COMMUTATED DRIVE MOTOR
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United States of America Patent
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Issued Date -
Aug 2, 2012
app pub date -
Jul 1, 2010
filing date -
Jul 18, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fan having an electronically commutated drive motor (27) has a bearing tube (62) having an inner side and an outer side. The internal stator of the drive motor (27) is arranged in the region of the outer side. An external rotor (28) of said motor interacts during operation with the internal stator (72). Fan blades (26) of the fan (22) are arranged on the outer periphery of the external rotor (28). Bearing elements (52, 54), by means of which a shaft (46) connected to the external rotor (28) is journaled, are arranged on the inner side of the bearing tube (62). Conduits (90), which enable coolant to flow through the bearing tube (62) during operation of the fan (22), are provided in the bearing tube (62).
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