Gas burner for liquid fuels

Abstract

Known gas burners are operated with liquid fuel, especially vegetable oil, and comprise an evaporator which evaporates the liquid fuel. The evaporation chamber thereof ( 29 ) is limited by a limiting wall ( 9, 11 ) wherein a gas discharge channel ( 17 ) is embodied in order to produce a gas jet (G). According to the invention, in order to ensure that the gas burner operates in a reliable manner, the limiting wall of the evaporator ( 7 ) is at least double and comprises an inner wall ( 9 ) and an outer wall ( 11 ).

1 - 12 . (canceled)  
   
   
       13 . A gas burner for liquid fuel, especially vegetable oil, comprising: 
 an evaporator for evaporating the liquid fuel;    an evaporation chamber limited by a boundary wall;    a gas discharge channel for producing a gas jet formed in said boundary wall; and    said evaporator boundary wall constructed at least as a double-walled structure with an inner wall and an outer wall.    
   
   
       14 . The gas burner according to  claim 13 , including said inner wall and said outer wall of said evaporator formed from different materials.  
   
   
       15 . The gas burner according to  claim 14 , including said inner wall of said evaporator formed from a chemically inactive material, such as stainless steel.  
   
   
       16 . The gas burner according to  claim 15 , including said outer wall of said evaporator formed from a heat-conductive material, such as copper.  
   
   
       17 . The gas burner according to  claim 13 , including said inner wall of said evaporator formed from a chemically inactive material, such as stainless steel.  
   
   
       18 . The gas burner according to  claim 13 , including said outer wall of said evaporator formed from a heat-conductive material, such as copper.  
   
   
       19 . The gas burner according to  claim 13 , including said gas discharge channel having an opening edge tapered from said evaporation chamber.  
   
   
       20 . The gas burner according to  claim 19 , including said tapered opening edge of said gas discharge channel constructed as substantially conical in shape enclosing a cone angle substantially between 50° and 70°.  
   
   
       21 . The gas burner according to  claim 19 , including said tapered opening edge connected to a constriction point formed in said gas discharge channel.  
   
   
       22 . The gas burner according to  claim 21 , including said constriction point of said gas discharge channel is constructed substantially as a hollow-cylindrical shape.  
   
   
       23 . The gas burner according to  claim 13 , including said gas discharge channel has an outlet opening edge constructed substantially as a conical shape enclosing a cone angle at least greater than about 15° to 20°.  
   
   
       24 . The gas burner according to  claim 13 , including said evaporator constructed as an evaporator tube.  
   
   
       25 . The gas burner according to  claim 21 , including said constriction point of said gas discharge channel constructed in said inner wall.  
   
   
       26 . The gas burner according to  claim 25 , including a gas jet opening constructed in said outer wall having a flow cross-section larger than a flow cross-section formed in said constriction point.  
   
   
       27 . The gas burner according to  claim 21 , including a gas jet opening constructed in said outer wall having a flow cross-section larger than a flow cross-section formed in said constriction point.  
   
   
       28 . A gas burner for liquid fuel, comprising: 
 the liquid fuel formed from vegetable oil;    an evaporator for evaporating said liquid fuel;    an evaporation chamber limited by a boundary wall;    a gas discharge channel for producing a gas jet formed in said boundary wall, said gas discharge channel having an opening edge tapered from said evaporation chamber;    said tapered opening edge connected to a constriction point formed in said gas discharge channel; and    said evaporator boundary wall constructed at least as a double-walled structure with an inner wall and an outer wall formed from different materials.    
   
   
       29 . The gas burner according to  claim 28 , including said evaporator constructed as an evaporator tube.  
   
   
       30 . The gas burner according to  claim 28 , including said constriction point of said gas discharge channel constructed in said inner wall.  
   
   
       31 . The gas burner according to  claim 30 , including a gas jet opening constructed in said outer wall having a flow cross-section larger than a flow cross-section formed in said constriction point.  
   
   
       32 . The gas burner according to  claim 28 , including a gas jet opening constructed in said outer wall having a flow cross-section larger than a flow cross-section formed in said constriction point.