Flame structure of gas burner

Abstract

A fire hole part structure of a gas burner, which is constructed to be manufactured at a low cost, can improve flame stability, and can prevent incomplete combustion due to the length of flame. The structure is provided to a premixing ignition burner, which is installed to apply heat to a heat exchanger of a boiler, and includes fire hole pieces which are installed parallel to one another in mounting openings of a burner body, and each of which is defined with fire holes at regular intervals. An upper wall of at least one of the fire hole pieces is bent or curved to extend in at least two directions, and the fire holes are defined through respective surface portions of the upper wall, which extend in different directions, to face different directions.

1 . A fire hole part structure comprising:
 a plurality of fire hole pieces configured to be installed parallel to one another in at least one mounting opening of a burner body, and   wherein each fire hole piece has defined therein a plurality of fire holes at regular intervals,   wherein an upper wall of at least a first fire hole piece is configured with two surface portions,   wherein each of the two surface portions faces a different direction, and   wherein each of the two surface portions includes at least two fire holes.   
   
   
       2 . The fire hole part structure according to  claim 1 , wherein the upper wall of the first fire hole piece has a wedge-shaped or an arc-shaped section which is one of, concave or convex. 
   
   
       3 . The fire hole part structure according to  claim 1 , wherein the plurality of fire hole pieces are installed in the burner body, and wherein the fire hole pieces which are installed in outermost regions of the burner body contain fire holes only on surface portions of the upper walls that face towards adjoining fire hole pieces. 
   
   
       4 . The fire hole part structure according to  claim 1 , wherein the fire holes defined through the two surface portions of the upper wall of each fire hole piece are staggered relative to each other. 
   
   
       5 . The fire hole part structure according to  claim 1 , wherein the plurality of fire hole pieces are formed by bending a single plate so that the fire hole pieces are integrally connected with one another. 
   
   
       6 . The fire hole part structure according to  claim 2 , wherein, the plurality of fire hole pieces are installed in the burner body, and wherein the fire hole pieces which are installed in outermost regions of the burner body contain fire holes only on surface portions of the upper walls that face towards adjoining fire hole pieces. 
   
   
       7 . The fire hole part structure according to  claim 2 , wherein the fire holes defined through the two surface portions of the upper wall of each fire hole piece are staggered relative to each other. 
   
   
       8 . The fire hole part structure according to  claim 2 , wherein the plurality of fire hole pieces are formed by bending a single plate so that the fire hole pieces are integrally connected with one another. 
   
   
       9 . The fire hole part structure according to  claim 1 , wherein the fire hole structure is provided to a premixing ignition burner which is installed to apply heat to a heat exchanger of a boiler.