Burner and aftertreating device of exhaust gas

Abstract

Provided are a burner and an aftertreating device of exhaust gas, which employs a simple construction using the flame protection tube, thereby increasing stability in forming the flame without the loss of back pressure and also uniformly heating the exhaust gas.

1 . A burner used in an aftertreating device of exhaust gas, comprising:
 a body which is disposed at a desired portion of a discharge tube and provided with an inlet port which is formed at one side of the body so as to introduce the exhaust gas therethrough, and an outlet port which is formed at the other side thereof so as to discharge the exhaust gas therethrough;   a flame protection tube which is disposed in the body and of which an end adjacent to the inlet port is closed;   a fuel injecting means which injects fuel into the flame protection tube; and   an igniting means which ignites the fuel injected from the fuel injecting means in the flame protection tube.   
     
     
         2 . The burner of  claim 1 , wherein the fuel injecting means injects the fuel so that the flame is formed in a direction that the exhaust gas is flowed. 
     
     
         3 . The burner of  claim 1 , wherein the flame protection tube is fixed to the body by the fuel injecting means and the igniting means. 
     
     
         4 . The burner of  claim 1 , wherein the body further comprises a dispersion plate which is disposed at the outlet port. 
     
     
         5 . An aftertreating device of exhaust gas, which reduces the exhaust gas generated from a diesel engine, comprising:
 a burner according to  claim 1 , which is disposed at a discharge tube through which the exhaust gas generated from the diesel engine is flowed; and   a catalytic filter which is disposed at a rear end of the burner so as to burn organic materials or particulate matters contained in the exhaust gas.   
     
     
         6 . An aftertreating device of exhaust gas, which reduces the exhaust gas generated from a diesel engine, comprising:
 a burner according to  claim 2 , which is disposed at a discharge tube through which the exhaust gas generated from the diesel engine is flowed; and   a catalytic filter which is disposed at a rear end of the burner so as to burn organic materials or particulate matters contained in the exhaust gas.   
     
     
         7 . An aftertreating device of exhaust gas, which reduces the exhaust gas generated from a diesel engine, comprising:
 a burner according to  claim 3 , which is disposed at a discharge tube through which the exhaust gas generated from the diesel engine is flowed; and   a catalytic filter which is disposed at a rear end of the burner so as to burn organic materials or particulate matters contained in the exhaust gas.   
     
     
         8 . An aftertreating device of exhaust gas, which reduces the exhaust gas generated from a diesel engine, comprising:
 a burner according to  claim 4 , which is disposed at a discharge tube through which the exhaust gas generated from the diesel engine is flowed; and   a catalytic filter which is disposed at a rear end of the burner so as to burn organic materials or particulate matters contained in the exhaust gas.