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US 11,534,728 B2Granted
Reductant nozzle with helical channel design
AssigneeCaterpillar Inc.
InventorsSatya Ramakrishna Manda Venkata Naga, Kevin L. Martin, Paul Arthur Zwart, Andrew M. Denis
Life of this patent
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Abstract
A nozzle including a first end and a second end. The first end includes at least a first inlet and a second inlet and the second end includes a plurality of outlets. An exterior surface extends from the first end to the second end of the nozzle. A plurality of vanes are disposed on the exterior surface and extend from the first end to the second end of the nozzle. A plurality of channels form along the exterior surface of the nozzle.
Claims12
A nozzle, comprising:
- a nozzle body including:
- a first end having a first inlet and a second inlet, the first inlet being fluidly connected to a first channel and the second inlet being fluidly connected to a second channel, the first and second channels being fluidly connected at a location spaced from the first end;
- a second end having a plurality of outlets, the second end being disposed opposite the first end along a longitudinal direction;
- a central longitudinal axis extending from the first end to the second end along the longitudinal direction;
- and
- an exterior surface extending from the first end of the nozzle body to the second end of the nozzle body, and extending about the central longitudinal axis;
- a housing disposed about the nozzle body and the central longitudinal axis, the housing including:
- a first end;
- a second end disposed opposite the first end of the housing along the longitudinal direction, the second end of the housing being disposed abutting the second end of the nozzle body, exposing a protruding spherical sector of the nozzle body;
- an interior surface extending from the first end of the housing to the second end of the housing, the interior surface of the housing facing the exterior surface of the nozzle body along a radial direction, the radial direction being perpendicular to the longitudinal direction;
- and
- an exterior surface facing away from the exterior surface of the nozzle body along the radial direction;
- a plurality of vanes disposed between the exterior surface of the nozzle body and the interior surface of the housing;
- and
- a plurality of channels disposed between the exterior surface of the nozzle body and the interior surface of the housing, wherein individual channels of the plurality of channels are defined at least in part by:
- pairs of adjacent vanes of the plurality of vanes;
- the exterior surface of the nozzle body;
- and
- the interior surface of the housing,
- wherein the first end of the housing and the exterior surface of the nozzle body define a radial gap therebetween along the radial direction, the radial gap being located at the first end of the housing along the longitudinal direction, the interior surface of the housing being in fluid communication with the exterior surface of the housing via the radial gap,
- wherein the first end of the housing is disposed between the first inlet and the second end of the nozzle body along the longitudinal direction, and the first end of the housing is disposed between the second inlet and the second end of the nozzle body along the longitudinal direction,
- wherein the plurality of vanes extends from an inlet end to an outlet end along the longitudinal direction, and the plurality of outlets is disposed between the inlet end of the plurality of vanes and the outlet end of the plurality of vanes along the longitudinal direction, and
- wherein each vane of the plurality of vanes converges into contact with adjacent vanes of the plurality of vanes at the central longitudinal axis along the radial direction and at the outlet end of the plurality of vanes along the longitudinal direction.
20 more elements
An exhaust system, comprising:
- an exhaust pipe configured to receive exhaust from an engine;
- a nozzle located within the exhaust pipe, the nozzle comprising:
- a nozzle body including:
- a first end having a first inlet and a second inlet, the first inlet being fluidly connected to a first channel and the second inlet being fluidly connected to a second channel, the first and second channels being fluidly connected at a location spaced from the first end;
- a second end having a plurality of outlets, the second end being disposed opposite the first end along a longitudinal direction;
- a central longitudinal axis extending from the first end to the second end along the longitudinal direction;
- and
- an exterior surface extending from the first end of the nozzle body to the second end of the nozzle body, and extending about the central longitudinal axis;
- a housing disposed about the nozzle body and the central longitudinal axis, the housing including:
- a first end;
- a second end disposed opposite the first end of the housing along the longitudinal direction, the second end of the housing being disposed abutting the second end of the nozzle body, exposing a protruding spherical sector of the nozzle body;
- an interior surface extending from the first end of the housing to the second end of the housing, the interior surface of the housing facing the exterior surface of the nozzle body along a radial direction, the radial direction being perpendicular to the longitudinal direction;
- and
- an exterior surface facing away from the exterior surface of the nozzle body along the radial direction;
- a plurality of vanes disposed between the exterior surface of the nozzle body and the interior surface of the housing;
- and
- a plurality of channels disposed between the exterior surface of the nozzle body and the interior surface of the housing, wherein individual channels of the plurality of channels are defined at least in part by:
- pairs of adjacent vanes of the plurality of vanes;
- the exterior surface of the nozzle body;
- and
- the interior surface of the housing,
- wherein the first end of the housing and the exterior surface of the nozzle body define a radial gap therebetween along the radial direction, the radial gap being located at the first end of the housing along the longitudinal direction, the interior surface of the housing being in fluid communication with the exterior surface of the housing via the radial gap,
- wherein the first end of the housing is disposed between the first inlet and the second end of the nozzle body along the longitudinal direction, and the first end of the housing is disposed between the second inlet and the second end of the nozzle body along the longitudinal direction,
- wherein the plurality of vanes extends from an inlet end to an outlet end along the longitudinal direction, and the plurality of outlets is disposed between the inlet end of the plurality of vanes and the outlet end of the plurality of vanes along the longitudinal direction, and
- wherein each vane of the plurality of vanes converges into contact with adjacent vanes of the plurality of vanes at the central longitudinal axis along the radial direction and at the outlet end of the plurality of vanes along the longitudinal direction.
22 more elements
Dependencies are inferred from the claim text.