Abstract:
An apparatus and a method are provided for a heating, ventilation, and air conditioning (HVAC) air filter to remove airborne molecular contaminants and volatile organic compounds (VOCs) from air within building spaces. The air filter comprises a support frame having a shape and size suitable to orient the air filter within a HVAC system. A compound filter medium is retained within the support frame to remove the airborne molecular contaminants and VOCs from air flowing through the HVAC system. A portion of the first media layer is pleated and may comprise a combination of media layers configured to exhibit a relatively high filtration efficiency and a low air pressure drop across the filter medium. A second portion of the filter medium is coupled to the first portion and maintains a uniform distribution of the pleats with the first portion.
Abstract:
A catch basin stormwater filtering apparatus includes a support frame and a filter medium supported by the support frame. The support frame includes a planar upper plate and a planar lower plate disposed below and in close proximity to the upper plate. The upper and lower plates have substantially the same outer dimensions, and the support frame defines a central opening. The filter medium is in the shape of a basket and includes lateral side walls of which adjacent walls are joined together, and a bottom wall, the lateral side walls defining a top opening which is disposed in alignment with the central opening of the support frame. The filter medium also includes a flange that extends outwardly from the lateral side walls at the top opening of the filter medium. The flange is interposed between and adhesively joined to the upper plate and the lower plate of the support frame.
Abstract:
Various embodiments of the teachings herein include a fiber material composite. The composite may include: a first region including metallic silver and manganese(IV) oxide for producing reactive oxygen species; and a second region configured to neutralize the reactive oxygen species.
Abstract:
A medical airway device includes a housing having at least one breathing circuit port and including an airway filter arranged to filter air flowing through the at least one breathing circuit port. The airway filter includes a layered filter including at least a first separate filter layer and a second separate filter layer being stacked on top of each other so that neighbouring separate filter layers abut each other. The layered filter has a first surface being laminated with a first scrim layer and a second surface being laminated with a second scrim layer. Each separate filter layer is a non-woven fiber layer.
Abstract:
Compound air filters and methods thereof are provided for sequestering airborne contaminants including volatile organic compounds (VOCs) from air streamed through the air filters. An air filter can include a support frame having a shape and size suitable for seating the air filter within an air-filtering system. A compound filter medium can be retained within the support frame to remove the airborne contaminants and VOCs from air flowing through the air filter and the air-filtering system containing one or more of the air filters. A first media layer of the compound filter medium can be pleated with pleats and configured to exhibit a relatively high filtration efficiency and a low air pressure drop across the filter medium. A second media layer of the filter medium can be coupled to the first media layer and configured to maintain a uniform distribution of the pleats with the first media layer.
Abstract:
The present invention relates to a belt comprising a warp yarn and a weft yarn, wherein the belt comprises a fused region along each longitudinal edge of the belt, said fused region being formed from the warp yarn, the weft yarn and a yarn provided for fusing the warp yarn and the weft yarn together.
Abstract:
Disclosed are exemplary embodiments of woven filtration fabrics that include core-sheath spun yarns in either or both of the warp and weft directions.
Abstract:
Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.
Abstract:
A multi-layer, fluid transmissive structure is provided that comprises first and second fiber layers each comprising a plurality of polymeric fibers bonded to each other at spaced apart contact points. The polymeric fibers of these fiber layers have diameters greater than one micron and collectively define interconnected interstitial spaces providing tortuous fluid flow paths through the first and second fiber layers. The structure also comprises a plurality of nanofibers disposed intermediate at least a portion of the first fiber layer and at least a portion of the second fiber layer.
Abstract:
A sorptive-filtration system for removing at least one of negatively or positively charged ions, complexes or particulates from an aqueous stream. The system includes a) flow formed substantially from at least one of rainfall-runoff or snowmelt-runoff; b) a filter containment communicating with the runoff stream such that at least part of the stream passes through the filter containment; and c) a granular filter media disposed within the filter containment, the filter media having an amphoteric material applied thereto, wherein the amphoteric material comprises a metal selected from at least one of Fe, Al, Mn, or Si.