US 12,228,064 B2
System for mixing a liquid spray into a gaseous flow and exhaust aftertreatment device comprising same
Korneel De Rudder, Winksele (BE); Anil C. Agar, Leuven (BE); Corine Chauvin, Caen (FR); and Bart Schellens, Overijse (BE)
Assigned to Donaldson Company, Inc., Bloomington, MN (US)
Filed by Donaldson Company, Inc., Bloomington, MN (US)
Filed on Sep. 25, 2023, as Appl. No. 18/473,855.
Application 18/473,855 is a continuation of application No. 17/624,736, granted, now 11,767,783, previously published as PCT/US2020/040531, filed on Jul. 1, 2020.
Claims priority of provisional application 62/971,344, filed on Feb. 7, 2020.
Claims priority of application No. 19184451 (EP), filed on Jul. 4, 2019.
Prior Publication US 2024/0159178 A1, May 16, 2024
Int. Cl. F01N 3/28 (2006.01); B01D 53/94 (2006.01); B01F 23/213 (2022.01); B01F 25/313 (2022.01); B01F 25/431 (2022.01); F01N 3/20 (2006.01); B01F 25/00 (2022.01)
CPC F01N 3/2892 (2013.01) [B01D 53/9418 (2013.01); B01F 23/2132 (2022.01); B01F 25/3131 (2022.01); B01F 25/431 (2022.01); B01F 25/4315 (2022.01); F01N 3/2066 (2013.01); B01F 2025/913 (2022.01); B01F 2025/931 (2022.01); F01N 2610/1453 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An exhaust aftertreatment system disposed within a conduit having a longitudinal axis, the exhaust aftertreatment system comprising:
a divider baffle configured to be disposed within the conduit to separate the conduit into an upstream section and a downstream section, the divider baffle defining an aperture leading between the upstream and downstream sections;
a swirl duct disposed in at least the upstream section, the swirl duct leading to the aperture at the divider baffle, the swirl duct defining a duct axis extending through the aperture;
an impact surface disposed in the downstream section, the impact surface extending downstream from the divider baffle and being at least partially offset inward from an inner surface of the conduit by an air gap, the impact surface intersecting a longitudinal axis of the swirl duct; and
a swirl-member disposed in the downstream section, the swirl member offset downstream from the duct axis, the swirl member configured to increase airflow turbulence, the air gap extending along the longitudinal axis of the conduit past the swirl member.