| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust purification device capable of uniformly mixing exhaust and a reduction agent without being affected by a piping route of an exhaust pipe of an internal combustion engine.SOLUTION: An exhaust purification device 1, which comprises: a urea water injection nozzle 2 installed in an exhaust pipe 14; and a catalyst reactor 12 installed at a downstream side of the urea water injection nozzle 2, reduces nitrogen oxide in exhaust with a NOx catalyst 13 stored in the catalyst reactor 12 with urea water injected into the exhaust of an engine 18 through a urea water injection nozzle 2. In the exhaust purification device 1, the urea water injection nozzle 2 is arranged in a manner that injects the urea water from an axial center of the exhaust pipe 14 toward the downstream side in a flow direction of the exhaust. Also, a mixer 11, which has a plurality of plate-like members 11b radiating from the axial center of the exhaust pipe 14 with plate surfaces A and B of the plate-like members 11b arranged in a manner that varies angles with respect to the flow direction of the exhaust between at an upstream side and at the downstream side, is installed at an upstream side edge of the catalyst reactor 12. |
