Fan having an integrated IP protection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 8, 2016
Grant Date -
Jun 9, 2005
app pub date -
Feb 11, 2003
filing date -
Mar 2, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fan has a fan housing (2) which is formed with a pot-shaped recess (4) and it has an external-rotor drive motor (103) having an internal stator (22) and an external rotor (34), separated from each other by an air gap (52). The internal stator (22) is mounted on a bearing support tube (24) which is connected to a base part (46). The arrangement of bearing support tube (24) and base part (46) form, together with the pot-shaped recess portion (4) of fan housing (2), a substantially fluid-tight annular space (54) enclosing the inner stator (22). A wall (56) defining this annular space (54) extends in the manner of a canned motor through the air gap (52) between inner stator (22) and external rotor (34).
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