Regenerative media filter
A regenerative filter that includes a filter housing having inlet and outlet zones; a fluid path provided between the inlet and outlet zones; a plurality of filter elements each having an outer surface filter media applied thereto and functioning to filter particulate or contaminants from the fluid path. The filter elements are disposed in an monolithic array. An inlet port arrangement is disposed at the filter housing leading to the inlet zone and is constructed and arranged to direct the fluid path into the filter housing in a manner so as to maintain a controlled turbulence at the inlet zone. The inlet port arrangement comprises a pair of inlet ports that are arranged in juxtaposition at the inlet zone and each having one end where the fluid flow enters. Embodiments that are considered as falling under the scope of the present invention include 1. Single inlet/two or more outlets; 2. Two or more inlets/single outlet, or 3. Two or more inlets and two or more outlets.
1 . A regenerative filter assembly comprising:
a filter housing having at least one elongate sidewall defining an interior volume;
a tube sheet dividing the interior volume into an upper filtrate volume in fluid communication with at least one filtrate outlet port of the filter housing permitting egress of filtrate, and a lower unfiltered volume for receiving fluid to be filtered;
an array of individual filter elements being suspended from the tube sheet and extending into the unfiltered volume, each individual filter element being spaced from each adjacent filter element in the array;
a plurality of influent ports each extending through the at least one elongate sidewall of the filter housing;
a plurality of inlet nozzles extending through respective influent ports, and into the lower unfiltered volume of the filter housing, each inlet nozzle being provided with at least one downwardly facing slot;
wherein, an uppermost portion of each inlet nozzle is spaced from a lowermost portion of the array of individual filter elements; and
wherein, a fluid to be filtered is introduced into the unfiltered volume through the plurality of inlet nozzles, directed in a downwardly facing direction away from the array of individual filter elements, subsequently, flowing up through the array of individual filter elements, through the tube sheet, in to the upper filtrate volume and out of the filter housing through the at least one filtrate outlet port.
2 . The regenerative filter assembly of claim 1 , wherein the plurality of inlet nozzles each include a vent port at a top of each inlet nozzle for venting air.
3 . The regenerative filter assembly of claim 1 , wherein the plurality of inlet nozzles each include a cap at the distal end of each inlet nozzle.
4 . The regenerative filter assembly of claim 3 , wherein the plurality of inlet nozzles each include a vent port at a top of each inlet nozzle for venting air.
5 . The regenerative filter assembly of claim 1 , wherein the filter housing has a cylindrical cross-section.
6 . The regenerative filter assembly of claim 1 , wherein the filter housing has a square cross-section.
7 . The regenerative filter assembly of claim 1 , wherein the plurality of inlet nozzles includes a pair of inlet nozzles, and wherein the regenerative filter assembly includes and is controlled by a valving system so that one of the inlet nozzles of the pair of inlet nozzles can be interrupted for service while the other inlet nozzle of the pair of inlet nozzles continues to function.
8 . The regenerative filter assembly of claim 7 , wherein each inlet nozzle includes an inlet pump and at least one isolation valve.
9 . The regenerative filter assembly of claim 8 , including a controller for controlling the isolation valves.
10 . The regenerative filter assembly of claim 9 , wherein the controller operates in one mode to have both of the at least one isolation valves open in order to provide flow through both pumps.
11 . The regenerative filter assembly of claim 9 , wherein the controller operates in another mode to have one isolation valve open in order to provide flow through the respective pump while the other isolation valve is closed in order to stop flow.
12 . The regenerative filter assembly of claim 1 , including a pair of filtrate outlet ports that are arranged in opposed position at the upper filtrate volume.
13 . The regenerative filter assembly of claim 12 , including a dome disposed over the filter housing with the pair of filtrate outlet ports being arranged in the dome.
14 . The regenerative filter assembly of claim 12 , wherein the plurality of inlet nozzles includes a pair of inlet nozzles that are respectively disposed in opposed position at opposed sides of the filter housing.
15 . The regenerative filter assembly of claim 14 , wherein the pair of filtrate outlet ports are disposed in line with the pair of inlet nozzles.
16 . The regenerative filter assembly of claim 14 , wherein the pair of filtrate outlet ports are disposed orthogonal to the pair of inlet nozzles.
17 . The regenerative filter assembly of claim 1 , wherein the plurality of inlet nozzles includes a pair of inlet nozzles that are respectively disposed in an opposed position at opposed sides of the filter housing.
18 . The regenerative filter assembly of claim 1 , wherein the plurality of inlet nozzles includes a pair of inlet nozzles that are respectively disposed one over the other.
19 . The regenerative filter assembly of claim 1 , wherein the plurality of inlet nozzles are disposed radially.