Compact scroll fan assembly

A radial fan assembly (18,20,30) for use in a powered air purifying respirator (10) includes at least an impeller (36), a printed circuit board (31) and a scroll casing (22). The scroll casing has a first (34) and a second (31) scroll casing element. The second scroll casing clement includes at leas...

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Bibliographische Detailangaben
Hauptverfasser:	MCLAUGHLIN, KEITH K, HAGEN, RONALD A
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING FIRE-FIGHTING HEATING HUMAN NECESSITIES LIFE-SAVING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	A radial fan assembly (18,20,30) for use in a powered air purifying respirator (10) includes at least an impeller (36), a printed circuit board (31) and a scroll casing (22). The scroll casing has a first (34) and a second (31) scroll casing element. The second scroll casing clement includes at least a portion of the printed circuit board. When the radial fan assembly is used in a powered air purifying respirators, the respirator may also include components such as a filter assembly (26).