Portable industrial air filtration device

A portable industrial air filtration device (10) of various embodiments of the present disclosure employs dynamic fan speed control to adjust the fan speed to achieve a desired air flow rate through the air filtration device (10). Generally, when employing dynamic fan speed control, the air filtrati...

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Bibliographische Detailangaben
Hauptverfasser:	Greene Daniel J, Grider Keith A, White Jr. John S, Leatzow Derek J, Mcphilliamy Stephen J, Belton Antonio J
Format:	Patent
Sprache:	eng
Schlagworte:	PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	A portable industrial air filtration device (10) of various embodiments of the present disclosure employs dynamic fan speed control to adjust the fan speed to achieve a desired air flow rate through the air filtration device (10). Generally, when employing dynamic fan speed control, the air filtration device (10) uses the pressure drop across the fan and the desired air flow rate through the air filtration device (10) to determine a desired fan speed that achieves the desired flow rate through the air filtration device. This enables the air filtration device (10) to maintain that desired air flow rate through the air filtration device by varying the fan speed as a pre-filter (900) and a HEPA filter (600) occlude during operation of the air filtration device, which prevents the air flow rate through the air filtration device 10 from falling below the desired air flow rate and impairing the air filtration device's performance.