US 12,138,603 B2
Mixing member, exhaust purifying device, and vehicle
Ken Miyawaki, Fujisawa (JP); and Nobutaka Ayabe, Fujisawa (JP)
Assigned to Isuzu Motors Limited, Yokohama (JP)
Appl. No. 17/421,559
Filed by ISUZU MOTORS LIMITED, Tokyo (JP)
PCT Filed Dec. 23, 2019, PCT No. PCT/JP2019/050235
§ 371(c)(1), (2) Date Jul. 8, 2021,
PCT Pub. No. WO2020/145101, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 2019-002519 (JP), filed on Jan. 10, 2019.
Prior Publication US 2022/0097012 A1, Mar. 31, 2022
Int. Cl. B01F 25/43 (2022.01); B01D 53/94 (2006.01); B01F 23/21 (2022.01); B01F 25/431 (2022.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01); F01N 3/28 (2006.01)
CPC B01F 25/43171 (2022.01) [B01D 53/9418 (2013.01); B01F 23/21 (2022.01); F01N 3/0842 (2013.01); F01N 3/2066 (2013.01); F01N 3/2892 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A mixing member that mixes an exhaust gas with a reducing agent, the exhaust gas flowing through an exhaust pipe in an exhaust direction, the reducing agent being supplied into the exhaust pipe, the mixing member comprising:
a base portion disposed in the exhaust pipe and separated from an inner wall of the exhaust pipe and included an upstream end surface on an upstream side in the exhaust direction and a downstream end surface on a downstream side in the exhaust direction; and
a plurality of blade portions which extends from the base portion toward the inner wall, and which generates a swirling flow of the exhaust gas on a downstream side of the mixing member in the exhaust direction, wherein;
the plurality of blade portions is disposed inclined with respect to the exhaust direction such that a connection portion of the plurality of blade portions with the base portion is located at a most downstream position of the plurality of blade portions in the exhaust direction;
the base portion includes a reducing agent passage which penetrates both the upstream end surface and the downstream end surface, and which allows the reducing agent to pass through from an upstream side of the mixing member to the downstream side thereof in the exhaust direction;
a surface connecting a connection part between the base portion and the plurality of blade portions with an edge of the reducing agent passage is inclined toward inside of the mixing member as the surface extends toward a downstream side in the exhaust direction; and
a groove is formed in the connection part between the base portion and the plurality of blade portions, the groove extending along an inclination direction of the plurality of blade portions with respect to the exhaust direction.