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Title:
REDUCTANT MIXING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/155150
Kind Code:
A1
Abstract:
A reductant mixing device according to the present invention comprises: a housing having an exhaust gas inflow part provided at a front end side thereof and a selective catalytic reduction catalyst provided at a rear end side thereof; a reductant injection nozzle for spraying a reductant aqueous solution between the exhaust gas inflow part and the selective catalytic reduction catalyst in an inner passage of the housing; and a swirl unit mounted between the exhaust gas inflow part and the selective catalytic reduction catalyst in the inner passage of the housing so as to guide, in a spiral shape, the flow direction of the fluid in which exhaust gas and reductant aqueous solution particles are mixed, wherein a cross sectional area of a passage of the swirl unit is formed to be smaller than a cross sectional area of the passage of the housing. If the reductant mixing device according to the present invention is used, the exhaust gas flows in a spiral shape when the reductant aqueous solution is mixed in the exhaust gas discharged from a vehicle engine, a vortex is generated while the exhaust gas flows along a spiral flow path, such that the reductant aqueous solution can be more uniformly mixed in the exhaust gas, and a mixing space having a long pipe shape is provided in a spatially compressed mixing form such that the device can be mounted even in a narrow available space.

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Inventors:
JUNG JONG HWA (KR)
YANG JAE UK (KR)
Application Number:
PCT/KR2016/002871
Publication Date:
September 14, 2017
Filing Date:
March 22, 2016
Export Citation:
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Assignee:
SEJONG IND CO LTD (KR)
International Classes:
F01N3/20; F01N3/28; F01N13/08
Foreign References:
KR20130034703A2013-04-08
KR20140023699A2014-02-27
KR20130090330A2013-08-13
US20130170973A12013-07-04
US20150040537A12015-02-12
Attorney, Agent or Firm:
KIM, Sun Kee et al. (KR)
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