Patents by Inventor Korneel De Rudder
Korneel De Rudder has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240018890Abstract: A dosing and mixing assembly for an exhaust aftertreatment device includes a conduit arrangement defining overlapping, coaxial flow paths that join at a common flow path. The conduit arrangement defines a mixing region upstream of the overlapping, coaxial flow paths, an impact region at the overlapping, coaxial flow paths, and a merge region where the coaxial flow paths join. The outer of the coaxial flow paths insulates the inner of the flow paths at least as the impact region. Reactant can be dispensed into the inner flow path along a spray path that intersects the impact region of the conduit arrangement.Type: ApplicationFiled: September 28, 2023Publication date: January 18, 2024Applicant: Donaldson Company, Inc.Inventors: Corine CHAUVIN, Korneel DE RUDDER, Anil C. AGAR, Bart SCHELLENS
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Patent number: 11840952Abstract: An aftertreatment device includes flow guides disposed within a dosing conduit. Exhaust enters through a perforated region of the dosing conduit and passes through the flow guides. The flow guides induce swirling or other turbulence to mix injected reactant with the exhaust gas. Various types of flow guides include cantilevered vanes, guide passageways, and louvered openings of a second conduit. Some types of flow guides induce localized mixing to inhibit deposit formation at the doser mounting unit. Other types of flow guides induce mixing downstream of the dosing conduit.Type: GrantFiled: June 30, 2020Date of Patent: December 12, 2023Assignee: Donaldson Company, Inc.Inventors: Matthew S. Whitten, Todd R. Taubert, Derek M. Larsen, Korneel De Rudder, Mark Thomas Brandl
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Patent number: 11773763Abstract: A dosing and mixing assembly for an exhaust aftertreatment device includes a conduit arrangement defining overlapping, coaxial flow paths that join at a common flow path. The conduit arrangement defines a mixing region upstream of the overlapping, coaxial flow paths, an impact region at the overlapping, coaxial flow paths, and a merge region where the coaxial flow paths join. The outer of the coaxial flow paths insulates the inner of the flow paths at least as the impact region. Reactant can be dispensed into the inner flow path along a spray path that intersects the impact region of the conduit arrangement. A spray protector can be provided at or upstream of the mixer to inhibit swirling of reactant at the doser nozzle.Type: GrantFiled: June 30, 2020Date of Patent: October 3, 2023Assignee: Donaldson Company, Inc.Inventors: Corine Chauvin, Korneel De Rudder, Anil C. Agar, Bart Schellens
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Patent number: 11767783Abstract: A spray/gas mixer includes a main body having a circumferential wall defining an inlet opening at one end and an outlet opening at another end; a divider baffle within the main body; a swirl duct having a first end adjacent to the wall and a second end extending to the divider baffle; an injector orifice at the first end of the swirl duct; a swirl promoting means; and a restrictor. The swirl promoting means is arranged between the divider baffle and the restrictor. Gas passing through the swirl promoting means is swirled around the first longitudinal axis (A) before passing through the restrictor. The restrictor is disposed between the swirl promoting means and the second end, forcing gas reaching it from an upstream side away from a peripheral region of the interior towards a center axis of the main body.Type: GrantFiled: July 1, 2020Date of Patent: September 26, 2023Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Anil C. Agar, Corine Chauvin, Bart Schellens
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Patent number: 11608764Abstract: A dosing and mixing arrangement includes a mixing tube having a constant diameter along its length. At least a first portion of the mixing tube includes a plurality of apertures. The arrangement also includes a swirl structure for causing exhaust flow to swirl outside of the first portion of the mixing tube in one direction along a flow path that extends at least 270 degrees around a central axis of the mixing tube. The arrangement is configured such that the exhaust enters an interior of the mixing tube through the apertures as the exhaust swirls along the flow path. The exhaust entering the interior of the mixing tube through the apertures has a tangential component that causes the exhaust to swirl around the central axis within the interior of the mixing tube. The arrangement also includes a doser for dispensing a reactant into the interior of the mixing tube.Type: GrantFiled: April 5, 2021Date of Patent: March 21, 2023Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Corine Chauvin
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Publication number: 20220341357Abstract: A dosing and mixing assembly for an exhaust aftertreatment device includes a conduit arrangement defining overlapping, coaxial flow paths that join at a common flow path. The conduit arrangement defines a mixing region upstream of the overlapping, coaxial flow paths, an impact region at the overlapping, coaxial flow paths, and a merge region where the coaxial flow paths join. The outer of the coaxial flow paths insulates the inner of the flow paths at least as the impact region. Reactant can be dispensed into the inner flow path along a spray path that intersects the impact region of the conduit arrangement. A spray protector can be provided at or upstream of the mixer to inhibit swirling of reactant at the doser nozzle.Type: ApplicationFiled: June 30, 2020Publication date: October 27, 2022Applicant: Donaldson Company, Inc.Inventors: Corine CHAUVIN, Korneel DE RUDDER, Anil C. AGAR, Bart SCHELLENS
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Patent number: 11465105Abstract: A mixing device includes a mixing cavity having a partially open wall and a closed wall. In certain examples, the partially open wall and the closed wall are two separately formed pieces. A downstream side of the mixing device is shaped so as to define a helicoidal groove for circumferentially guiding gas from an outlet opening of the mixing cavity in a downstream direction. An injector sprays reactant into the mixing cavity.Type: GrantFiled: January 25, 2019Date of Patent: October 11, 2022Assignee: DONALDSON COMPANY, INC.Inventors: Korneel De Rudder, Bart Schellens, Corine Chauvin, Francisco Silva
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Publication number: 20220316382Abstract: A spray/gas mixer includes a main body having a circumferential wall defining an inlet opening at one end and an outlet opening at another end; a divider baffle within the main body; a swirl duct having a first end adjacent to the wall and a second end extending to the divider baffle; an injector orifice at the first end of the swirl duct; a swirl promoting means; and a restrictor. The swirl promoting means is arranged between the divider baffle and the restrictor. Gas passing through the swirl promoting means is swirled around the first longitudinal axis (A) before passing through the restrictor. The restrictor is disposed between the swirl promoting means and the second end, forcing gas reaching it from an upstream side away from a peripheral region of the interior towards a center axis of the main body.Type: ApplicationFiled: July 1, 2020Publication date: October 6, 2022Applicant: Donaldson Company, Inc.Inventors: Korneel DE RUDDER, Anil C. AGAR, Corine CHAUVIN, Bart SCHELLENS
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Publication number: 20220268192Abstract: An aftertreatment device includes flow guides disposed within a dosing conduit. Exhaust enters through a perforated region of the dosing conduit and passes through the flow guides. The flow guides induce swirling or other turbulence to mix injected reactant with the exhaust gas. Various types of flow guides include cantilevered vanes, guide passageways, and louvered openings of a second conduit. Some types of flow guides induce localized mixing to inhibit deposit formation at the doser mounting unit. Other types of flow guides induce mixing downstream of the dosing conduit.Type: ApplicationFiled: June 30, 2020Publication date: August 25, 2022Applicant: Donaldson Company, Inc.Inventors: Matthew S. WHITTEN, Todd R. TAUBERT, Derek M. LARSEN, Korneel DE RUDDER, Mark Thomas BRANDL
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Patent number: 11110406Abstract: A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.Type: GrantFiled: March 20, 2020Date of Patent: September 7, 2021Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Stéphane Le Merdy
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Publication number: 20210239022Abstract: A dosing and mixing arrangement includes a mixing tube having a constant diameter along its length. At least a first portion of the mixing tube includes a plurality of apertures. The arrangement also includes a swirl structure for causing exhaust flow to swirl outside of the first portion of the mixing tube in one direction along a flow path that extends at least 270 degrees around a central axis of the mixing tube. The arrangement is configured such that the exhaust enters an interior of the mixing tube through the apertures as the exhaust swirls along the flow path. The exhaust entering the interior of the mixing tube through the apertures has a tangential component that causes the exhaust to swirl around the central axis within the interior of the mixing tube. The arrangement also includes a doser for dispensing a reactant into the interior of the mixing tube.Type: ApplicationFiled: April 5, 2021Publication date: August 5, 2021Inventors: Korneel De Rudder, Corine Chauvin
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Patent number: 10968800Abstract: A dosing and mixing arrangement includes a mixing tube having a constant diameter along its length. At least a first portion of the mixing tube includes a plurality of apertures. The arrangement also includes a swirl structure for causing exhaust flow to swirl outside of the first portion of the mixing tube in one direction along a flow path that extends at least 270 degrees around a central axis of the mixing tube. The arrangement is configured such that the exhaust enters an interior of the mixing tube through the apertures as the exhaust swirls along the flow path. The exhaust entering the interior of the mixing tube through the apertures has a tangential component that causes the exhaust to swirl around the central axis within the interior of the mixing tube. The arrangement also includes a doser for dispensing a reactant into the interior of the mixing tube.Type: GrantFiled: April 26, 2019Date of Patent: April 6, 2021Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Corine Chauvin
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Patent number: 10940451Abstract: An exhaust treatment arrangement includes a mixing assembly disposed between first and second substrates; and an injection mounting location disposed at the mixing assembly. The mixing assembly includes a mixing arrangement configured to direct exhaust flow exiting the first substrate in a swirling configuration, a restricting member defining a restricted passage, and optionally a dispersing member configured to even out the exhaust flow.Type: GrantFiled: December 21, 2018Date of Patent: March 9, 2021Assignee: Donaldson Company, Inc.Inventors: Mark Thomas Brandl, Korneel De Rudder, Bruce Hoppenstedt, Matthew S. Whitten
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Publication number: 20210039056Abstract: A mixing device includes a mixing cavity having a partially open wall and a closed wall. In certain examples, the partially open wall and the closed wall are two separately formed pieces. A downstream side of the mixing device is shaped so as to define a helicoidal groove for circumferentially guiding gas from an outlet opening of the mixing cavity in a downstream direction. An injector sprays reactant into the mixing cavity.Type: ApplicationFiled: January 25, 2019Publication date: February 11, 2021Inventors: Korneel DE RUDDER, Bart SCHELLENS, Corine CHAUVIN, Fransisco SILVA
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Publication number: 20200324254Abstract: A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.Type: ApplicationFiled: March 20, 2020Publication date: October 15, 2020Inventors: Korneel De Rudder, Stéphane Le Merdy
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Patent number: 10603642Abstract: A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.Type: GrantFiled: March 18, 2019Date of Patent: March 31, 2020Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Stéphane Le Merdy
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Patent number: 10533477Abstract: An exhaust treatment device is disclosed. The exhaust treatment device has a compact configuration that includes integrated reactant dosing, reactant mixing and contaminant removal/treatment. The mixing can be achieved at least in part by a swirl structure and contaminant removal can include NOx reduction.Type: GrantFiled: March 17, 2017Date of Patent: January 14, 2020Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Stephane Le Merdy, Bart Schellens, Nic Degelin, Corine Chauvin, Jeffrey Curtis Gillen
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Publication number: 20190249583Abstract: A dosing and mixing arrangement includes a mixing tube having a constant diameter along its length. At least a first portion of the mixing tube includes a plurality of apertures. The arrangement also includes a swirl structure for causing exhaust flow to swirl outside of the first portion of the mixing tube in one direction along a flow path that extends at least 270 degrees around a central axis of the mixing tube. The arrangement is configured such that the exhaust enters an interior of the mixing tube through the apertures as the exhaust swirls along the flow path. The exhaust entering the interior of the mixing tube through the apertures has a tangential component that causes the exhaust to swirl around the central axis within the interior of the mixing tube. The arrangement also includes a doser for dispensing a reactant into the interior of the mixing tube.Type: ApplicationFiled: April 26, 2019Publication date: August 15, 2019Inventors: Korneel De Rudder, Corine Chauvin
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Publication number: 20190209977Abstract: A method for causing exhaust gas flow to flow at least 270 degrees in a first direction about a perforated tube using a baffle plate having a main body with a plurality of flow-through openings and a plurality of louvers positioned adjacent to the flow-through openings. The method includes deflecting a first portion of the exhaust gas flow with the main body of the baffle plate. The method also includes allowing a second portion of the exhaust gas flow to flow through the flow-through openings of the baffle plate. The method also deflects the second portion of the exhaust gas flow at a downstream side of the main body with the louvers hereby causing the second portion of the exhaust gas flow to flow in the first direction about the perforated tube.Type: ApplicationFiled: March 18, 2019Publication date: July 11, 2019Inventors: Korneel De Rudder, Stéphane Le Merdy
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Patent number: 10294841Abstract: A dosing and mixing arrangement includes a mixing tube having a constant diameter along its length. At least a first portion of the mixing tube includes a plurality of apertures. The arrangement also includes a swirl structure for causing exhaust flow to swirl outside of the first portion of the mixing tube in one direction along a flow path that extends at least 270 degrees around a central axis of the mixing tube. The arrangement is configured such that the exhaust enters an interior of the mixing tube through the apertures as the exhaust swirls along the flow path. The exhaust entering the interior of the mixing tube through the apertures has a tangential component that causes the exhaust to swirl around the central axis within the interior of the mixing tube. The arrangement also includes a doser for dispensing a reactant into the interior of the mixing tube.Type: GrantFiled: January 7, 2016Date of Patent: May 21, 2019Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Corine Chauvin