# US 2018/0021720 A1 · Dual filter for moisture removal from a fluid flow > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0021720 A1 - Document ID: US20180021720A1 - Status: Published application - Kind: A1 - Application number: 15/541,827 - Filed: 2015-11-19 - Published: 2018-01-25 - Earliest claimed: 2015-01-07 - Assignees: Norgren Limited - Applicants: Norgren Limited - Inventors: Hywel Ward Davies; Gary Kenneth Manning - Web page: https://patentgrep.com/patent/US20180021720A1 ## CPC - B01D 53/261: {by adsorption} - B01D 53/0415: {Beds in cartridges} - B01D 53/0423: {Beds in columns} - B01D 53/0438: {Cooling or heating systems} - B01D 53/0446: {Means for feeding or distributing gases} - B01D 53/0454: {Controlling adsorption (controlling temperature swing adsorption B01D53/0462, controlling pressure swing adsorption B01D53/047)} - B01D 53/0462: {Temperature swing adsorption} - B60T 17/004: {Draining and drying devices} - B01D 2257/80: Water - B01D 2259/40007: Controlling pressure or temperature swing adsorption - B01D 2259/40009: using sensors or gas analysers - B01D 2259/4009: using hot gas - B01D 2259/40096: by using electrical resistance heating - B01D 2259/402: using two beds - B01D 2259/4566: for use in transportation means - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES ## Abstract A dual filter (100) for removing one or more components from a fluid flow is provided. The dual filter (100) comprises a first filter media (112a) and a second filter media (112b) respectively disposed in a first conduit (114a) and a second conduit (114b), and at least one manifold (120, 130) coupled to a pair of openings (116a,b) of the conduits (114a, b) wherein the at least one manifold (120, 130) is adapted to monitor and control the fluid flow through one of the filter media (112a,b). ## Claims ### Claim 1 A dual filter for removing one or more components from a fluid flow, comprising: a first filter media and a second filter media respectively disposed in a first conduit and a second conduit; and at least one manifold coupled to a pair of openings of the conduits wherein the at least one manifold is adapted to monitor and control the fluid flow through one of the filter media. ### Claim 2 (depends on 1) The dual filter of claim 1 is further adapted to purge the filter media based on a performance criteria. ### Claim 3 (depends on 1) The dual filter of claim 1 is further adapted to control a fluid flow rate through the filter media based on a fluid property. ### Claim 4 (depends on 1) The dual filter of claim 1 is further adapted to direct purge flow through the filter media not receiving the fluid flow. ### Claim 5 (depends on 1) The dual filter of claim 1 is further adapted to remove the one or more components from the fluid flow in any dual filter orientation. ### Claim 6 (depends on 1) The dual filter of claim 1 further comprises a controller adapted to control the fluid flow based on a criteria. ### Claim 7 (depends on 1) The dual filter of claim 1 further comprises a controller adapted to monitor a property of the fluid flow. ### Claim 8 (depends on 1) The dual filter of claim 1 wherein the at least one manifold further comprises valves adapted to direct the fluid flow to one of the filter media while controlling a purge flow from another of the filter media. ### Claim 9 (depends on 1) The dual filter of claim 1 wherein the at least one manifold comprises a nozzle adapted to control a fluid flow rate through the filter media. ### Claim 10 (depends on 1) The dual filter of claim 1 wherein the at least one manifold comprises a plurality of exhaust ports fluidly coupled to filter media. ### Claim 11 (depends on 1) The dual filter of claim 1 wherein the at least one manifold comprises one or more drain recesses and a plurality of purge drain holes configured to drain fluid from the manifolds in at least two orientations. ### Claim 12 (depends on 1) The dual filter of claim 1 wherein the at least one manifold further comprises a check valve adapted to direct the fluid flow from one of the filter media to valves that control the fluid flow. ### Claim 13 (depends on 1) The dual filter of claim 1 wherein the at least one manifold comprises: an inlet manifold that directs the fluid flow to one of the filter media; and an outlet manifold that diverts fluid flow from the filter media to provide pilot fluid to the inlet manifold. ### Claim 14 (depends on 1) The dual filter of claim 1 wherein the at least one manifold comprises: an inlet manifold that directs the fluid flow to one of the filter media; and an outlet manifold that diverts fluid flow from the one of the filter media to purge another of the filter media. ### Claim 15 (depends on 1) The dual filter of claim 1 further comprises of one or more two-way diffuser-concentrators adapted to diffuse the fluid flow to the filter media and concentrate the fluid flow from the filter media. ### Claim 16 (depends on 15) The dual-filter of claim 15 wherein the two-way diffuser-concentrators are further adapted to hold the filter media in the conduits. ### Claim 17 (depends on 15) The dual-filter of claim 15 wherein the two-way diffuser-concentrators are conical. ### Claim 18 (depends on 15) The dual-filter of claim 15 wherein the two-way diffuser-concentrators are comprised of at least an inner diffuser-concentrator and an outer diffuser-concentrator. ### Claim 19 (depends on 1) The dual filter of claim 1 further comprises one or more porous retaining discs disposed between the filter media and the at least one manifold to retain the filter media. ### Claim 20 (depends on 1) The dual filter of claim 1 wherein the conduits are in a housing that further includes a pilot channel that carries pilot fluid from an outlet manifold to an inlet manifold. ### Claim 21 (depends on 1) The dual filter of claim 1 further comprises a heater adapted to heat the filter media to reduce the purge time of the filter media. ### Claim 22 A method of forming a dual filter for removing one or more components from a fluid flow, comprising: forming and respectively disposing a first filter media and a second filter media in a first conduit and a second conduit; forming and coupling at least one manifold to a pair of openings of the conduits; and adapting the at least one manifold to monitor and control the fluid flow through one of the filter media. ### Claim 23 (depends on 22) The method of forming the dual filter of claim 22 wherein the adapting the at least one manifold to monitor and control the fluid flow through one of the filter media comprises adapting the dual filter to purge the filter media based on a performance criteria. ### Claim 24 (depends on 22) The method of forming the dual filter of claim 22 wherein the adapting the at least one manifold to monitor and control the fluid flow through one of the filter media comprises adapting the dual filter to control a fluid flow rate through the filter media based on a fluid property. ### Claim 25 (depends on 22) The method of forming the dual filter of claim 22 wherein the adapting the at least one manifold to monitor and control the fluid flow through one of the filter media comprises adapting the dual filter to direct purge flow through the filter media not receiving the fluid flow. ### Claim 26 (depends on 22) The method of forming the dual filter of claim 22 wherein the adapting the at least one manifold to monitor and control the fluid flow through one of the filter media further adapted to remove the one or more components from the fluid flow in any dual filter orientation. ### Claim 27 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the dual filter comprises forming and adapting a controller to control the fluid flow based on a criteria. ### Claim 28 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the dual filter comprises forming and adapting a controller to monitor a property of the fluid flow. ### Claim 29 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the at least one manifold further comprises forming and adapting valves to direct the fluid flow through one of the filter media while directing a purge flow from another of the filter media. ### Claim 30 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the at least one manifold comprises forming and adapting a nozzle to control a fluid flow rate through the filter media. ### Claim 31 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the at least one manifold comprises forming a plurality of exhaust ports fluidly coupled to the filter media. ### Claim 32 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the at least one manifold comprises forming and configuring one or more drain recesses and a plurality of purge drain holes to drain fluid from the at least one manifold in at least two orientations. ### Claim 33 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming at least one manifold comprises forming and adapting a check valve redirect a portion of the fluid flow from one of the filter media to valves that control the fluid flow. ### Claim 34 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the at least one manifold comprises: forming an inlet manifold that directs the fluid flow to one of the filter media; and forming an outlet manifold that diverts fluid flow from the filter media to the inlet manifold to control the fluid flow. ### Claim 35 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the at least one manifold comprises: forming an inlet manifold that directs the fluid flow to one of the filter media; and forming an outlet manifold that diverts fluid flow from the one of the filter media to purge another of the filter media. ### Claim 36 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the dual filter comprises forming and adapting one or more two-way diffuser-concentrators to diffuse the fluid flow to the filter media and concentrate the fluid flow from the filter media. ### Claim 37 (depends on 36) The method of forming the dual filter of claim 36 wherein the forming the two-way diffuser-concentrators further comprises adapting the two-way diffuser-concentrators to hold the filter media in the conduits. ### Claim 38 (depends on 36) The method of forming the dual filter of claim 36 wherein the forming the two-way diffuser-concentrators comprises forming conical two-way diffuser-concentrators. ### Claim 39 (depends on 36) The method of forming the dual filter of claim 36 wherein the forming the two-way diffuser-concentrators comprises forming two at least an inner diffuser-concentrator and an outer diffuser-concentrator. ### Claim 40 (depends on 22) The method of forming the dual filter of claim 22 further comprises forming and disposing one or more porous retaining discs between the filter media and the at least one manifold to retain the filter media. ### Claim 41 (depends on 22) The method of forming the dual filter of claim 22 wherein the forming the conduits comprises forming a pilot channel that carries the fluid flow from an outlet manifold to an inlet manifold. ### Claim 42 (depends on 22) The method of forming the dual filter of claim 22 further comprises forming and adapting a heater to heat the filter media to reduce the purge time of the filter media. ### Claim 43 A method of filtering a fluid flow with a dual filter, the method comprising: monitoring and controlling a fluid flow through at least two filter media with at least one manifold adapted to direct fluid flow to one of the at least two filter media based on a property of the filtered fluid flow from the one of the at least one of the two filter media. ### Claim 44 (depends on 43) The method of filtering the fluid flow with the dual filter of claim 43 further comprises diverting some of the filtered fluid flow from the one of the at least two filter media to purge another of the at least two filter media. ### Claim 45 (depends on 43) The method of filtering the fluid flow with the dual filter of claim 43 further comprises diverting some of the filtered fluid flow the one of the at least two filter media to provide pilot fluid to the at least one manifold to control the fluid flow. ### Claim 46 (depends on 43) The method of filtering the fluid flow with the dual filter of claim 43 further comprises switching the fluid flow from the one of the at least two filter media to another of the at least two filter media with the at least one manifold based on a fluid flow property.