Combustor

Abstract

Provided is a combustor comprising an entrance through which the fuel flows thereinto; a combustion chamber, connected to the entrance, having a larger cross-section area than that of the entrance; and a plurality of protrusions installed along the interface of the entrance and the combustion chamber. Thus, the combustor according to the present invention has an enhanced mixing capability of fuel and air in the combustion chamber, thereby having enhanced combustion efficiency and reduced discharge of harmful exhaust gas.

1 . A combustor comprising: 
 an entrance through which the fuel flows into the combustion chamber;    a combustion chamber, connected to the entrance having a larger cross-section area than that of the entrance; and    a plurality of protrusions installed along the interface between the entrance and the combustion chamber.    
   
   
       2 . The combustor of  claim 1 , wherein each protrusion forms an angle between 45° to 90° with respect to a flow direction of the fuel at the entrance.  
   
   
       3 . The combustor of  claim 2 , wherein the cross-sections of the entrance and the combustion chamber are circular and the protrusions are installed with a same spacing between adjacent protrusions.  
   
   
       4 . The combustor of  claim 3 , wherein the combustion chamber includes a slanted portion, connected to the entrance having a cross-section increasing from the entrance toward the flow direction of the fuel and air; and an extended portion, connected to the slanted portion having a constant cross-section; 
 the height of the protrusion is 0.1 to 0.3 times the difference between the radius of the cross-section of the entrance and the radius of the cross-section of the extension portion;    the width of the protrusion is 0.2 to 0.5 times the difference between the radius of the cross-section of the entrance and the radius of the cross-section of the extension portion; and    the spacing between the protrusions is 1.5 to 3 times the difference between the radius of the cross-section of the entrance and the radius of the cross-section of the extension portion.    
   
   
       5 . The combustor of  claim 1 , wherein each protrusion has a rectangular shape  
   
   
       6 . The combustor of  claim 1 , wherein each protrusion has a triangular shape.