Structural support for air filter
The present disclosure is directed to inventive methods, apparatus, and systems for supporting pleated filter media. Flaps of a support strip may be folded in an overlapping engagement to support the filter media in a variety of applications.
1. A filter apparatus comprising:
a filter media having a plurality of pleats, said plurality of pleats having a plurality of pleat tips each defined by a pair of sloping side surfaces along a front face and a rear face of said filter media;
an outer peripheral frame receiving said filter media;
one or more elongated first support strips on said front face of said filter media and transversely orientated to said plurality of pleats;
one or more elongated second support strips on said rear face of said filter media and transversely orientated to said plurality of pleats, at least one of said second support strips includes an elongated center flap and opposing first and second folding lateral flaps, wherein said first folding lateral flap extends from said center flap along a first folding edge and said second folding lateral flap extends from said center flap along a second folding edge, wherein at least a portion of each one of said first folding lateral flap, said second folding lateral flap, and said center flap is substantially planar when in an overlapping engagement with each other; and
at least one of said first support strips on said front face at least partially overlaps at least one of said second support strips on said rear face.
2. The filter apparatus of claim 1 wherein said one or more elongated second support strips span adjacent said pleat tips along said rear face.
3. The filter apparatus of claim 1 wherein said first folding lateral flap, said second folding lateral flap, and said center flap are laminated together when in said overlapping engagement.
4. The filter apparatus of claim 1 wherein one or more opposing ends of at least one of said one or more second support strips are positioned between said filter media and at least a portion of said outer peripheral frame.
5. The filter apparatus of claim 1 wherein said overlapping engagement is secured by at least one of adhesive, heat bonding, or ultrasonic welding.
6. The filter apparatus of claim 1 wherein said one or more elongated second support strips are formed of a blank of board stock.
7. The filter apparatus of claim 1 wherein said first folding lateral flap extends from said first folding edge to adjacent said second folding edge when in said overlapping engagement.
8. The filter apparatus of claim 7 wherein said second folding lateral flap extends from said second folding edge to adjacent said first folding edge when in said overlapping engagement.
9. The filter apparatus of claim 1 wherein said first folding lateral flap and said second folding lateral flap overlap the same side of said center flap when in said overlapping engagement.
10. The filter apparatus of claim 1 wherein said one or more elongated first support strips is an elongated single-ply support strip.
11. A filter apparatus comprising:
a filter media having a plurality of pleats, said plurality of pleats having a plurality of pleat tips each defined by a pair of sloping side surfaces along a front face and a rear face of said filter media;
an outer peripheral frame receiving said filter media;
one or more elongated support strips on said rear face of said filter media and transversely orientated to said plurality of pleats, at least one of said support strips includes an elongated center flap and opposing first and second folding lateral flaps, wherein said first folding lateral flap extends from said center flap along a first folding edge and said second folding lateral flap extends from said center flap along a second folding edge, wherein at least a portion of each one of said first folding lateral flap, said second folding lateral flap, and said center flap is substantially planar when in an overlapping engagement with each other; and
wherein said first folding lateral flap, said second folding lateral flap, and said center flap are secured together when in said overlapping engagement.
12. The filter apparatus of claim 11 further comprising one or more elongated single-ply support strips on said front face of said filter media and transversely orientated to said plurality of pleats, and wherein at least one of said single-ply support strips on said front face at least partially overlaps at least one of said one or more support strips on said rear face.
13. The filter apparatus of claim 11 wherein said one or more elongated support strips span adjacent said pleat tips along said rear face.
14. The filter apparatus of claim 11 wherein one or more opposing ends of at least one of said one or more support strips are positioned between said filter media and at least a portion of said outer peripheral frame.
15. The filter apparatus of claim 11 wherein said overlapping engagement is secured by at least one of adhesive, heat bonding, or ultrasonic welding.
16. The filter apparatus of claim 11 wherein said one or more elongated support strips are formed of a blank of board stock.
17. An elongated support strip in combination with a pleated filter media comprising:
one or more elongated support strips formed of a blank of board stock;
said one or more support strips positioned on a rear face of a pleated filter media and transversely orientated to a plurality of pleats, at least one of said support strips includes an elongated center flap and opposing first and second folding lateral flaps, wherein said first folding lateral flap extends from said center flap along a first folding edge and said second folding lateral flap extends from said center flap along a second folding edge, wherein at least a portion of each one of said first folding lateral flap, said second folding lateral flap, and said center flap is substantially planar when in an overlapping engagement with each other; and
wherein said first folding lateral flap, said second folding lateral flap, and said center flap are secured together by at least one of adhesive, heat bonding, or ultrasonic welding when in said overlapping engagement.
18. The elongated support strip in combination with a pleated filter media of claim 17 wherein said first folding lateral flap extends from said first folding edge to adjacent said second folding edge when in said overlapping engagement.
19. The elongated support strip in combination with a pleated filter media of claim 17 wherein said second folding lateral flap extends from said second folding edge to adjacent said first folding edge when in said overlapping engagement.
20. The elongated support strip in combination with a pleated filter media of claim 17 wherein said first folding lateral flap and said second folding lateral flap overlap the same side of said center flap when in said overlapping engagement.