Blower filter device, respirator system and method
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United States of America Patent
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Feb 2, 2021
Grant Date -
Aug 18, 2016
app pub date -
Oct 6, 2014
filing date -
Oct 7, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fan filter device (50) for a respirator (1) includes an air inlet (54) for unfiltered air and an air outlet (56) for the discharge of filtered air. A fan unit (60), for aspirating air through the air inlet, includes a fan motor (62) and a fan sensor (64). The fan sensor is designed for detecting at least one operating parameter of the fan motor. The fan filter device further includes a filter unit (31) for receiving a filter (30) for filtering the aspirated air and an air flow sensor (58) for detecting at least one flow parameter of the filtered air flowing through the air outlet. A control unit (66) is configured to monitor the fan motor as a function of the at least one flow parameter and the at least one operating parameter. A respirator and method for operating such a fan filter device are also provided.
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