Patents by Inventor Bart Schellens
Bart Schellens 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: 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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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: 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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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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Patent number: 9925502Abstract: A flow device for an exhaust system includes a body that defines an interior cavity. An exhaust inlet passage is disposed in the interior cavity. An exhaust outlet passage is disposed in the interior cavity so that at least a portion of the exhaust inlet passage circumferentially surrounds at least a portion of the exhaust outlet passage. A doser is adapted to inject reductants into the interior cavity of the body such that the reductants are injected in the same general direction as the direction of flow of the exhaust gases.Type: GrantFiled: November 9, 2015Date of Patent: March 27, 2018Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Bart Schellens, Antonio Gil, Nic Degelin
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Publication number: 20170191399Abstract: 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: ApplicationFiled: March 17, 2017Publication date: July 6, 2017Inventors: Korneel DE RUDDER, Stephane LE MERDY, Bart SCHELLENS, Nic DEGELIN, Corine CHAUVIN, Jeffrey Curtis GILLEN
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Patent number: 9598999Abstract: 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: April 19, 2013Date of Patent: March 21, 2017Assignee: 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: 20160121275Abstract: A flow device for an exhaust system includes a body that defines an interior cavity. An exhaust inlet passage is disposed in the interior cavity. An exhaust outlet passage is disposed in the interior cavity so that at least a portion of the exhaust inlet passage circumferentially surrounds at least a portion of the exhaust outlet passage. A doser is adapted to inject reductants into the interior cavity of the body such that the reductants are injected in the same general direction as the direction of flow of the exhaust gases.Type: ApplicationFiled: November 9, 2015Publication date: May 5, 2016Inventors: Korneel De Rudder, Bart Schellens, Antonio Gil, Nic Degelin
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Patent number: 9180407Abstract: A flow device for an exhaust system includes a body that defines an interior cavity. An exhaust inlet passage is disposed in the interior cavity. An exhaust outlet passage is disposed in the interior cavity so that at least a portion of the exhaust inlet passage circumferentially surrounds at least a portion of the exhaust outlet passage. A doser is adapted to inject reductants into the interior cavity of the body such that the reductants are injected in the same general direction as the direction of flow of the exhaust gases.Type: GrantFiled: July 2, 2013Date of Patent: November 10, 2015Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Bart Schellens, Antonio Gil, Nic Degelin
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Publication number: 20150132192Abstract: 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: ApplicationFiled: April 19, 2013Publication date: May 14, 2015Inventors: Korneel De Rudder, Stephane Le Merdy, Bart Schellens, Nic Degelin, Corine Chauvin
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Publication number: 20140093439Abstract: A flow device for an exhaust system includes a body that defines an interior cavity. An exhaust inlet passage is disposed in the interior cavity. An exhaust outlet passage is disposed in the interior cavity so that at least a portion of the exhaust inlet passage circumferentially surrounds at least a portion of the exhaust outlet passage. A doser is adapted to inject reductants into the interior cavity of the body such that the reductants are injected in the same general direction as the direction of flow of the exhaust gases.Type: ApplicationFiled: July 2, 2013Publication date: April 3, 2014Applicant: Donaldson Company, Inc.Inventors: Korneel De Rudder, Bart Schellens, Antonio Gil, Nic Degelin
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Patent number: 8499548Abstract: A flow device for an exhaust system includes a body that defines an interior cavity. An exhaust inlet passage is disposed in the interior cavity. An exhaust outlet passage is disposed in the interior cavity so that at least a portion of the exhaust inlet passage circumferentially surrounds at least a portion of the exhaust outlet passage. A doser is adapted to inject reductants into the interior cavity of the body such that the reductants are injected in the same general direction as the direction of flow of the exhaust gases.Type: GrantFiled: December 17, 2009Date of Patent: August 6, 2013Assignee: Donaldson Company, Inc.Inventors: Korneel De Rudder, Bart Schellens, Antonio Gil, Nic Degelin
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Publication number: 20100212301Abstract: A flow device for an exhaust system includes a body that defines an interior cavity. An exhaust inlet passage is disposed in the interior cavity. An exhaust outlet passage is disposed in the interior cavity so that at least a portion of the exhaust inlet passage circumferentially surrounds at least a portion of the exhaust outlet passage. A doser is adapted to inject reductants into the interior cavity of the body such that the reductants are injected in the same general direction as the direction of flow of the exhaust gases.Type: ApplicationFiled: December 17, 2009Publication date: August 26, 2010Inventors: Korneel De Rudder, Bart Schellens, Antonio Gil, Nic Degelin