Electronic device and filtering unit
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United States of America Patent
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Mar 16, 2010
Grant Date -
Sep 6, 2007
app pub date -
Mar 1, 2007
filing date -
Mar 1, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filtering unit for receiving an electronic device. The filtering unit includes a housing, a filter, a fan, a detector, and a controller. The housing includes an inlet. The filter is disposed at the inlet of the housing. The fan is disposed in the housing. The detector detects the number of particles in the filter. The controller is coupled to the fan and the detector. When the number of the particles in the filter exceeds a threshold value, the detector outputs a signal to the controller to change the rotating direction of the fan.
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