Patent ID: 9447717
Filing Date: 2016-09-20
CPC Classification: B01F,F01N,Y02A,Y02T

Claim Text:
1. A mixer for an exhaust gas treatment system of a vehicle, the mixer comprising: a support body defining a substantially rectangular mixing chamber with a fluid flow path disposed along a longitudinal axis, wherein the mixing chamber includes a lower surface, an upper surface spaced from and opposing the lower surface, a first lateral edge surface extending between the lower surface and the upper surface, and a second lateral edge surface extending between the lower surface and the upper surface and opposing the first lateral edge surface; a plurality of first blades arranged in a single row and extending between the lower surface and the upper surface of the mixing chamber, with the single row of the first blades disposed along a transverse axis that is substantially perpendicular to the longitudinal axis; wherein each of the first blades extends along the longitudinal axis, from an upstream edge, toward the first lateral edge surface of the mixing chamber, to a downstream edge, at a first row angle relative to the transverse axis; a plurality of second blades arranged in a single row and extending between the lower surface and the upper surface of the mixing chamber, with the single row of the second blades disposed along the transverse axis; wherein each of the second blades extends along the longitudinal axis, from an upstream edge, toward the second lateral edge surface of the mixing chamber, to a downstream edge, at a second row angle relative to the transverse axis; wherein the single row of the first blades is axially spaced along the longitudinal axis from the single row of the second blades a row spacing distance; wherein the first row angle is different from the second row angle; and wherein each adjacent pair of the plurality of first blades are spaced a first gap distance from each other along the transverse axis, and each adjacent pair of the plurality of second blades are spaced a second gap distance from each other along the transverse axis, wherein the first gap distance is less than the second gap distance.