Metal fiber sintered body for surface combustion

Abstract

Disclosed herein is a metal fiber sintered body for combustion used for combustion media of gas burners. The sintered body comprises a plurality of circular though-holes, each having a diameter of 0.5˜2 mm, formed in a regular pattern therein. The sintered body has a metal fiber density in the range of 0.5˜4 kg/m 2 , and a total area of the through-holes is less than 5% of a total surface area of the metal fiber sintered body. The metal fibers may comprise Fe—Cr—Al-based alloys, and further comprise trace elements. When the sintered body is applied to the combustion media, the fuel gas is prevented from being concentrated on the center of the through holes and leaked therethrough, while the length of combustion flames is reduced, thereby enabling complete combustion as well as allowing the combustion chamber to be manufactured at a reduced scale.

1 . A metal fiber sintered body for combustion media of combustors, comprising: 
 a plurality of circular though-holes formed in a regular pattern in the metal fiber sintered body, wherein the metal fiber sintered body has a metal fiber density in the range of 0.5˜4 kg/m 2 , each of the through-holes has a diameter of 0.5˜2 mm, and a total area of the through-holes is less than 5% of a total surface area of the metal fiber sintered body.    
   
   
       2 . The sintered body as set forth in  claim 1 , wherein a space between the through holes is 1˜5 mm, and the through holes are regularly arranged in a triangular pattern.  
   
   
       3 . The sintered body as set forth in  claim 1 , wherein a space between the through holes is 1˜6 mm, and the through holes are regularly arranged in a rectangular pattern.  
   
   
       4 . The sintered body as set forth in any one of  claims 1  to  3 , wherein the metal fibers have a diameter of 20˜80 μm.  
   
   
       5 . The sintered body as set forth in any one of  claims 1  to  3 , wherein the metal fibers comprise Fe—Cr—Al-based alloys.  
   
   
       6 . The sintered body as set forth in  claim 4 , wherein the metal fibers comprise Fe—Cr—Al-based alloys.  
   
   
       7 . The sintered body as set forth in  claim 5 , wherein the metal fibers further comprise 0.05˜0.5 wt % of Zr.  
   
   
       8 . The sintered body as set forth in  claim 6 , wherein the metal fibers further comprise 0.05˜0.5 wt % of Zr.  
   
   
       9 . The sintered body as set forth in any one of  claims 1  to  3 , wherein the sintered body has a porosity of 70˜95%.  
   
   
       10 . A metal fiber sintered body for combustion media of combustors, wherein the sintered body has a metal fiber density in the range of 0.5˜4 kg/m 2 .