초록 ▼

Portable room air purifiers having replaceable and generally cylindrical high efficiency particulate air filters which are mounted to receive incoming air which is drawn therethrough by centrifugal fans positioned adjacent deflectors in such a manner that air is directed radially outwardly through g

Portable room air purifiers having replaceable and generally cylindrical high efficiency particulate air filters which are mounted to receive incoming air which is drawn therethrough by centrifugal fans positioned adjacent deflectors in such a manner that air is directed radially outwardly through generally annular exhaust openings in a quiet and yet highly efficient manner. The fans, air deflectors and exhaust openings are designed to create outlet air flow patterns which will give a positive physical indication that the air filters should be replaced. In one embodiment of the invention, the filter units are stackable so as to permit increased air flow rates without modifying the centrifugal fan or fan motor.

대표청구항 ▼

A portable air purification apparatus comprising a housing including a base portion and cover means, said base portion including an air deflectin means and a plate means mounted in spaced relationship to said air deflection means so as to create a substantially continuous air exhaust opening therebe

A portable air purification apparatus comprising a housing including a base portion and cover means, said base portion including an air deflectin means and a plate means mounted in spaced relationship to said air deflection means so as to create a substantially continuous air exhaust opening therebetween, a centrifugal fan means disposed between said plate means and said air deflection means and being mounted so as to direct air radially outwardly therefrom through said air exhaust opening, at least one opening through said plate means to permit air flow therethrough to said centrifugal fan means, motor means carried by said base portion and extending upwardly with respect to said opening in said plate means, said motor means having drive shaft means for driving said centrifugal fan means, air filter means mounted between said base portion and said cover means so that air is drawn therethrough toward said centrifugal fan means, and means for securing said cover means relative to said base means to thereby retain said air filter means therebetween.