Liquid-fuel leaktight heating appliance

Abstract

An open-flued, liquid-fuel, leaktight, low-power individual domestic heating appliance ( 1 ), in which means for removing the burnt gases derived from the combustion, and also means for feeding in oxidant gas (air), are mounted directly on an external structure ( 5 ) , such as an outside wall, which may be a bearing wall, or the roof of a dwelling or a room to be heated, without connection to a chimney, comprises a burner pot ( 4 ) containing a catalyst ( 15 ), preferably made of refractory steel, which stabilizes the flame and which has a nominal heat output of between 50% and 100%, and preferably between 75% and 100%, of the said output of a conventional burner of the same dimensions connected to the chimney of a dwelling.

What is claimed is:  
     
         1 . A heating appliance, comprising: 
 components for removing burnt gases derived from combustion;    components for feeding in oxidant gas;    a burner pot in communication with said components for removing burnt gases and said components for feeding in oxidant gas;    wherein said components for removing burnt gases and said components for feeding in oxidant gas are mounted on a structure external to the building to be heated and are not connected to a chimney.    
     
     
         2 . The heating appliance of    claim 1   , wherein said burner pot contains a catalyst.  
     
     
         3 . The heating appliance of    claim 2   , wherein said catalyst is a refractory steel.  
     
     
         4 . The heating appliance of    claim 1   , wherein said burner pot further comprises calibrated oxidant-gas injectors.  
     
     
         5 . The heating appliance of    claim 1   , further comprising a burner circuit.  
     
     
         6 . The heating appliance of    claim 5   , wherein said burner circuit presents a depression between 4 and 12+2 Pa.  
     
     
         7 . The heating appliance of    claim 1   , wherein said device for removing the burnt gases and said device for feeding in oxidant gas comprise a double nozzle.  
     
     
         8 . The heating appliance of    claim 7   , wherein said double nozzle comprises an inner cylinder and an outer cylinder, said inner cylinder being nested within said outer cylinder such that an annular space is present between said inner cylinder and said outer cylinder, wherein the burnt gases exit said heating appliance via said inner cylinder and said oxidant gas enters said appliance via said annular space.  
     
     
         9 . The heating appliance of    claim 7   , wherein an end of said double nozzle proximate to said external structure is covered with an air drain.  
     
     
         10 . The heating appliance of    claim 9   , wherein an end of said inner cylinder proximal to said external structure projects out relative to said external structure and relative to an end of said outer cylinder proximal to said external structure.  
     
     
         11 . The heating appliance of    claim 1   , wherein said burner further comprises a reaction ring of frustoconical shape, comprising a plurality of equidistant holes arranged in a first circle, and a second plurality of holes of a smaller diameter than said first set of holes, arranged essentially in a second circle, wherein the radius of said circle is greater than the radius of said first circle.  
     
     
         12 . The heating appliance of    claim 11   , wherein said reaction ring is at an angle of 45 degrees +5 degrees relative to the axis of the burner.  
     
     
         13 . The heating appliance of    claim 12   , wherein the number of holes of smaller diameter is greater than the number of holes of larger diameter.  
     
     
         14 . The heating appliance of    claim 1   , wherein said burner, comprises a reaction ring of a frustoconical shape, comprising a first plurality of equidistant holes arranged in a first circle having a first radius, wherein said first plurality of holes comprises holes of a first diameter alternating with holes of a second diameter, said first diameter being greater than said second diameter, a second plurality of holes arranged in a second circle having a second radius, said second radius being greater than the first radius, and a third plurality of holes arranged in a third circle having a third radius, said third radius being greater than said second radius.  
     
     
         15 . The heating appliance of    claim 14   , wherein said reaction ring is at an angle of 45 degrees +5 degrees relative to the axis of the burner.  
     
     
         16 . The heating appliance of    claim 15   , wherein the diameter of said second plurality of holes is less than said second diameter and the diameter of said third plurality of holes is greater than the diameter of said second plurality of holes.  
     
     
         17 . The heating appliance of    claim 1   , further comprising a fuel in said burner wherein said fuel is selected from the group consisting of fuel oil, domestic fuel, petroleum and vegetable oil.