A fuel gasifying burner comprising:
- a combustion cylinder having a peripheral wall and a bottom wall provided at axial one end of said peripheral wall, said bottom wall having formed therein an opening;
- means cooperating with an outer end face of said bottom wall of said combustion cylinder for defining an air blowing chamber communicating with said opening in said bottom wall of said combustion cylinder;
- a combustion plate having formed therethrough a plurality of gasified fuel blowing openings, said combustion plate being arranged within said combustion cylinder to define a gas chamber between said combustion plate and said bottom wall of said combustion cylinder;
- a fuel gasifying member arranged within said combustion cylinder for rotation about an axis thereof, said fuel gasifying member having a peripheral wall extending about the axis of said combustion cylinder, said peripheral wall of said fuel gasifying member having axial one open end and the other axial end closed, said fuel gasifying member including means defining a gasified fuel-air mixture passage having an upstream end communicating with said air blowing chamber through said opening in said bottom wall of said combustion cylinder, and a downstream end communicating with said gas chamber;
- means for supplying liquid fuel into combustion air blown from said air blowing chamber toward said gasified fuel-air mixture passage through said opening in said bottom wall of said combustion cylinder, to form gasified fuel-air mixture;
- means including an annular air ejection passage defined between said gas chamber and said axial open one end of said peripheral wall of said fuel gasifying member;
- a plurality of ventilation pipes arranged circumferentially about the axis of said combustion cylinder and extending through said gas chamber for communicating said air blowing chamber with said annular air ejection passage;
- a first mixing promotion cylinder located radially outwardly of said ventilation pipes and radially inwardly of said gasified fuel blowing openings in said combustion plate, for directing the gasified fuel-air mixture from said gasified fuel-air mixture passage, away from said bottom wall of said combustion cylinder, said first mixing promotion cylinder cooperating with said bottom wall of said combustion cylinder to define therebetween a flat gas inflow chamber having a radially outward peripheral closed end;
- a second mixing promotion cylinder located radially outwardly of said ventilation pipes and radially inwardly of said gasified fuel blowing openings in said combustion plate, said second mixing promotion cylinder including a peripheral wall extending from said combustion plate toward said bottom wall of said combustion cylinder and an extension wall extending radially outwardly from an end of said peripheral wall of said second mixing promotion cylinder adjacent said bottom wall of said combustion cylinder, for directing the gasified fuel-air mixture from said first mixing promotion cylinder, toward said bottom wall of said combustion cylinder, said second mixing promotion cylinder being spaced from said first mixing promotion cylinder to define therebetween a narrow and bent gasified fuel-air mixture passage;
- and
- an annular gasified fuel-air mixture deceleration ring extending from an inner peripheral surface of said peripheral wall of said combustion cylinder, radially inwardly toward said extension wall of said second mixing promotion cylinder in confronted, but spaced relation thereto.