Vaporizing burner

Abstract

A closed furnace vaporizing burner and a feed therefor suitable for adapting to a closed fireplace, transforming it into a liquid fuel fireplace. The invention comprises two distinct portions: The fuel feed comprising the inlet 1, an air-liquid separator 2, an injector tube 3 terminated by two downwardly bent small-diameter tubes 30, a cooling tube 4, a holding and protection tube 13, two protective tubes 16 and 18 or a heat-recovery cooler 39, and a support 10. The combustion assembly comprises an air feed and hearth support box 20, a fan 22, a combustion pot 26, a receptacle 27, horizontal disks of grid, or expanded metal, or perforated sheet metal 31, radial fins 36, a transparent ceramic glass tube 38, a reflecting screen 47, and in a variant, air injection rings 41 and transparent ceramic glass tubes 42.

1 . A heating device suitable for fitting to a stove or to a closed woodburning fireplace to transform it into a liquid fuel fireplace, the device comprising: 
 a combustion device comprising: 
 a box containing a fan;  
 at least one transparent ceramic glass tube, and a combustion pot, both placed on the box; and  
   a liquid fuel feed device for feeding liquid fuel to the combustion device, the liquid fuel feed device comprising an injector tube situated inside a cooling tube.    
     
     
         2 . A device according to    claim 1   , further comprising an air-fuel separator for ensuring a regular flow of liquid fuel by eliminating air bubbles.  
     
     
         3 . A device according to    claim 1   , in which said injector tube has two small-diameter angled outlets enabling drops of liquid fuel to flow without dispersion.  
     
     
         4 . A device according to    claim 1   , in which said injector tube is inclined and cooled by water contained and flowing in said cooling tube without a mechanical system for driving the water.  
     
     
         5 . A device according to    claim 3   , further comprising a tube protecting the end of said injector tube and said two outlets to prevent them becoming clogged.  
     
     
         6 . A device according to    claim 1   , further comprising a tube or a heat-recovering cooler preventing liquid fuel drops from igniting over a fraction of their fall in said combustion pot.  
     
     
         7 . A device according to    claim 1   , in which said fan is a variable speed fan.  
     
     
         8 . A device according to    claim 1   , in which said at least one ceramic glass tube is placed on said box and supports said combustion pot, making it possible to see the reddening thereof and the combustion through air injection holes provided in said combustion pot or in an air injection ring.  
     
     
         9 . A device according to    claim 1   , further including fins for eliminating the turbulent effect of the injected air, thus providing better combustion.  
     
     
         10 . A device according to    claim 1   , in which said combustion device further comprises a conically-shaped receptacle receiving drops of liquid fuel without any splashing, thereby contributing to keeping said combustion pot clean.  
     
     
         11 . A device according to    claim 1   , in which said combustion device further includes a solid horizontal disk, horizontal disks in the form of grids or expanded metal or perforated sheet metal, a tube, and spacers which are disposed inside said combustion pot, facilitating combustion and creating a glowing embers effect.  
     
     
         12 . A liquid fuel burner suitable for fitting to a wood fireplace, the burner comprising: 
 a liquid fuel combustion pot comprising a bottom wall;    a first wall provided with holes for injecting air for combustion;    a device for feeding liquid fuel to the combustion pot, said device comprising a double-walled tube to deliver a flow of liquid fuel and to cool it; and    a device for delivering air to the air injection holes, which device comprises a box fitted with an air fan, air-guiding members, and a second wall extending outside said first wall.    
     
     
         13 . A burner according to    claim 12   , in which an outside portion of said double-walled tube contains water, said double-walled tube being inclined and having a portion outside said fireplace so as to allow the liquid fuel to flow under gravity and so as to cool the liquid fuel by a flow of water contained inside the tube without requiring the water to be driven mechanically.  
     
     
         14 . A burner according to    claim 12   , in which said second wall is transparent, so as to enable the reddening of the combustion pot to be seen.  
     
     
         15 . A burner according to    claim 12   , in which said second wall is placed on said box and supports said combustion pot.  
     
     
         16 . A burner according to    claim 12   , further including a heat screen protecting the air fan from heat due to radiation emitted by said combustion pot.  
     
     
         17 . A liquid fuel burner for a fireplace, the burner comprising: 
 a combustion pot provided with injection holes for combustion air;    an injector tube for bringing a liquid fuel to vertically above the combustion pot, and allowing fuel drops to drip from one end of the injector tube;    a tube terminated by a vertical portion protecting the fuel after it leaves the injector tube;    a tubular wall extending around said combustion pot; and    a box containing a fan to deliver combustion air, and supporting said tubular wall and said combustion pot.    
     
     
         18 . A burner according to    claim 17   , further comprising a cooling tube extending around said injector tube, with a first portion extending inside the fireplace and a second portion extending outside the fireplace, said cooling tube forming a leakproof radiator for cooling the injector tube by a heat-pipe effect.  
     
     
         19 . A burner according to    claim 17   , further comprising a receptacle including a conical portion having a small angle at the apex and placed at the center of said combustion pot so as to receive said drops of fuel.  
     
     
         20 . A burner according to    claim 17   , further comprising fins for eliminating turbulence due to said air fan, and also a heat screen for protecting the air fan.