Blower filter device
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United States of America Patent
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Apr 24, 2018
Issued Date -
N/A
app pub date -
Apr 17, 2014
filing date -
Apr 20, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A blower filter device (50) for a respirator system (1) has a filter unit (31) receiving an air filter (30) and a blower unit (65) drawing in the filtered air and generating discharged air. The blower unit has a blower (53) and a driving motor (54). An improved respirator system is provided with the blower filter device having a pressure sensor (55) arranged in the discharged air measuring the pressure of the discharged air, a mass flow sensor (56) arranged in the discharged air measuring the mass flow of the discharged air, or a parameter-determining unit (59, 60) determining an operating parameter of the motor. A control unit (51, 52) determines the volume flow of the discharged air via the measured pressure, the measured mass flow or based on the operating parameter determined and sets the motor as a function of the volume flow determined.
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