Air filtering device
First Claim
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1. An air filtering device comprisinga base having an air inlet and an air outlet;
- a fan functionally attached to said base, wherein said fan is capable of moving air through said air outlet;
an air filter bag in air flow communication with said air outlet and comprising an air flow surface area from which air exits said air filter bag when said device is in use, wherein the air filter bag is foldable;
a substantially air impermeable outer sleeve comprising a first open end, a second open end, and an air flow path therebetween, wherein said outer sleeve is in air flow communication with said air outlet, and wherein said outer sleeve envelops said air filter bag around its longitudinal axis and defines a spatial gap between said air filter bag and said outer sleeve;
wherein the air flow rate in said air flow path is about 80 to about 100 CFM and the pressure drop at said spatial gap is less than about 8 Pa.
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Abstract
A device for filtering air having a base, a fan functionally attached to the base, an air filter releasably attached to the base, and a substantially air impermeable outer sleeve is provided.
55 Citations
18 Claims
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1. An air filtering device comprising
a base having an air inlet and an air outlet; -
a fan functionally attached to said base, wherein said fan is capable of moving air through said air outlet; an air filter bag in air flow communication with said air outlet and comprising an air flow surface area from which air exits said air filter bag when said device is in use, wherein the air filter bag is foldable; a substantially air impermeable outer sleeve comprising a first open end, a second open end, and an air flow path therebetween, wherein said outer sleeve is in air flow communication with said air outlet, and wherein said outer sleeve envelops said air filter bag around its longitudinal axis and defines a spatial gap between said air filter bag and said outer sleeve; wherein the air flow rate in said air flow path is about 80 to about 100 CFM and the pressure drop at said spatial gap is less than about 8 Pa. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification