US 10,888,885 B2
Reductant nozzle with swirling spray pattern
Satya Ramakrishna Manda Venkata Naga, Dunlap, IL (US); Kevin L. Martin, Washburn, IL (US); Paul Arthur Zwart, Dunlap, IL (US); and Andrew M. Denis, Peoria, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Deerfield, IL (US)
Filed on Nov. 15, 2018, as Appl. No. 16/192,637.
Prior Publication US 2020/0156023 A1, May 21, 2020
Int. Cl. B05B 7/10 (2006.01); B01F 5/04 (2006.01); B05B 7/04 (2006.01); F01N 3/20 (2006.01); B01D 53/18 (2006.01)
CPC B05B 7/10 (2013.01) [B01F 5/0461 (2013.01); B05B 7/0466 (2013.01); B01D 53/185 (2013.01); F01N 3/2066 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1453 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A nozzle, comprising:
a first end;
a second end located opposite the first end along a longitudinal direction, the longitudinal direction being parallel to a longitudinal axis of the nozzle, wherein the second end defines a plurality of spray outlet apertures having a first cross-sectional area;
an exterior surface extending between the first end and the second end;
an interior surface including a bottom end surface, a top end surface, and a sidewall surface disposed between the bottom end surface and the top end surface along the longitudinal direction;
a first inlet channel extending along the longitudinal direction;
a nozzle wall having a thickness extending from the exterior surface to the first inlet channel along a radial direction, the radial direction being transverse to the longitudinal direction; and
a second inlet channel defined within the nozzle wall and extending along the longitudinal direction,
the bottom end surface, the top end surface, and the sidewall surface defining an interior cavity within the nozzle,
the bottom end surface defining a first inlet aperture facing toward the top end surface along the longitudinal direction, the first inlet channel being fluidly coupled to the interior cavity via the first inlet aperture,
the sidewall surface defining a second inlet aperture therethrough, the second inlet aperture facing radially inward toward the interior cavity, the second inlet channel being fluidly coupled to the interior cavity via the second inlet aperture, the second inlet aperture being disposed between the interior cavity and the second inlet channel along the radial direction,
the top end surface defining a plurality of spray inlet apertures, wherein individual spray inlet apertures of the plurality of spray inlet apertures are fluidly connected to corresponding spray outlet apertures of the plurality of spray outlet apertures via individual spray channels of a plurality of spray channels, and wherein the plurality of spray apertures have a second cross-sectional area that is greater than the first cross-sectional area.