Cartridge filter and method
AssigneeThermo Kinetics Industries, Inc.
InventorsJohn E. Chambers, David C. Brenner
Life of this patent
Estimating the term…
Abstract
An air filter cartridge receives air flow through a side filter media (A) for discharge through an orifice plate (B) carried at an air exit end opposite an opening in a wall, wherein a bellmouth air entrance member (C) within the air filter cartridge receives air flow from the filter media (A) and directs same to an evase (D) for reception thereby through an exit opening in the orifice plate for discharge through the exit opening in the wall.
Claims18
An air filter having an exit end positioned opposite an opening in a wall comprising:
- a cartridge including an elongated support structure surrounded by filter media wherein air enters laterally through said filter media;
- an orifice plate extending across an air exit end of said cartridge having an exit opening for said air;
- a bellmouth air entrance member carried within said cartridge on one side of said orifice plate having walls tapering inwardly to an exit end connected to said cartridge adjacent said exit opening in said orifice plate in alignment therewith;
- an evase positioned exteriorally of said cartridge on the other side of said orifice plate having walls tapering outwardly from an entrance end connected to said cartridge adjacent said orifice plate in alignment with said exit opening and with said exit end of said bellmouth;
- and
- said exit end of said bellmouth and said entrance end of said evase being aligned and in juxtaposition on respective opposite sides of said orifice plate so that said erase receives air collected by said bellmouth directly from the exit end and discharges same from said cartridge through said evase;
- whereby an air pressure drop across said air filter is minimized.
The method of filtering air in an elongated cartridge having an orifice plate extending across an air exit end of said cartridge, a closed end opposite said exit end and a cylindrical filter media covering sides of the cartridge comprising the steps of:
- drawing air flow into the sides of said cartridge through said filter media;
- passing said air flow into an open end of a bellmouth having inward tapering walls on the cartridge side of the orifice plate and an exit end carried adjacent said orifice plate;
- and
- then introducing said air flow through said orifice plate directly into an entrance end of an erase having outward tapering walls carried exteriorally of the elongated cartridge;
- whereby a pressure drop across the cartridge is reduced.
A fluid filter having an exit end positioned opposite an opening in a wall comprising:
- a cartridge including an elongated support structure surrounded by filter media wherein fluid enters laterally through said filter media;
- an orifice plate extending across a fluid exit end of said cartridge having an exit opening for said fluid;
- a bellmouth fluid entrance member carried within said cartridge having walls tapering inwardly to an exit end connected to said cartridge adjacent and in alignment with said exit opening in said orifice plate;
- said exit end of said bellmouth and said exit end of said cartridge being in juxtaposition so that fluid collected by said bellmouth is discharged through said exit end of said cartridge;
- and
- an imperforate end plate opposite said fluid exit end;
- whereby an air pressure drop across said fluid filter is minimized.
A fluid filter having an exit end positioned opposite an opening in a wall comprising:
- a cylindrical cartridge including an elongated support structure surrounded by filter media wherein fluid enters laterally through said filter media;
- an orifice plate extending across a fluid exit end of said cartridge having an exit opening for said fluid;
- an element of circular cross-section having tapered walls for reducing turbulence having a minimum diameter adjacent said orifice plate connected in aligned relation to said cartridge adjacent said orifice plate opposite said exit opening for reducing the pressure drop at the exit opening;
- an entrance end of said element and said exit end of said cartridge being in juxtaposition so that said element receives fluid collected in said cartridge and discharges same from said exit openings and
- a closure member at an end of said cartridge so that substantially all the fluid passing through said filter enters laterally through said filter media and flows through said exit opening and said tapered walls at said exit end of said filter;
- whereby a fluid pressure drop across said fluid filter is minimized.
Dependencies are inferred from the claim text.