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US 7,556,663 B2Granted
Dual pleated air filter
AssigneeAdvanced Flow Engineering, Inc.
InventorShahriar Nick Niakan
Life of this patent
Estimating the term…
Abstract
A dual pleated air filter according to the present disclosure may include two or more generally parallel, pleated filter elements layered perpendicular to the influent air stream and having the pleats of adjacent filter elements oriented orthogonally. Within each pleated filter element are an influent mesh layer and a corresponding effluent mesh layer for supporting filter media and one or more layers of filter media are located between the influent and the effluent mesh layers. The relative orientation of pleats of adjacent elements may range from parallel to perpendicular.
Claims23
An air filter comprising:
- an influent filter element, the influent filter element being generally planar and having a plurality of parallel pleats parallel to a first direction;
- an effluent filter element, the effluent filter element being generally planar and parallel to the influent filter element and having a plurality of parallel pleats parallel to a second direction, the second direction perpendicular to the first direction;
- and
- a filter frame for securing the influent filter element to the effluent filter element forming a straight air path perpendicular to the influent and effluent filter elements with the influent filter element and the effluent filter element in series relative to the straight air path.
1 more element
An air filter comprising:
- a generally planar influent filter element having a plurality of parallel pleats parallel to a first direction, the influent filter element having;
- a influent mesh layer and a corresponding effluent mesh layer for supporting filter media;
- one or more layers of synthetic foam between the influent mesh layer and the effluent mesh layer;
- one or more layers of cotton fiber filter media formed from a piteous, absorbent, and wickable natural fiber between the one or more layers of synthetic foam and the effluent mesh layer;
- an efficacious amount of oil disposed in the one or more layers of synthetic foam and the one or more layers of cotton fiber filter media;
- a generally planar effluent filter element, the effluent filter element being parallel to the influent filter element and having a plurality of parallel pleats parallel to a second direction, the second direction perpendicular to the first direction;
- the effluent filter element having;
- a influent mesh layer and a corresponding effluent mesh layer for supporting filter media;
- one or more layers of cotton fiber filter media formed from a piteous, absorbent, and wickable natural fiber between the influent mesh layer and the effluent mesh layer;
- and
- one or more layers of spunbond polyester fiber filter media between the one or more layers of cotton fiber filter media and the effluent mesh layer;
- an efficacious amount of oil disposed in the one or more layers of synthetic foam and the one or more layers of cotton fiber filter media;
- and
- a filter frame for securing the influent filter element to the effluent filter element forming an air path perpendicular to the first and second filter elements.
11 more elements
An air filter comprising:
- a filter frame forming an air path having an influent end and an effluent end, the filter frame for securing two or more filter elements in series with respect to the air path;
- an influent filter element secured to the influent end of the filter frame, the influent filter element being generally planar and having a plurality of pleats aligned in a first direction;
- and
- an effluent filter element secured to the effluent end of the filter frame, the effluent filter element being generally planar and parallel to the influent filter element and having a plurality of parallel pleats aligned in a second direction, the second direction being substantially perpendicular to the first direction.
1 more element
Dependencies are inferred from the claim text.