Abstract: A fuel gasifying burner including a combustion cylinder, a rotary shaft extending into the combustion cylinder through its open base, a frustoconical rotary gasifying member connected to the rotary shaft and formed at a lower end of its wall with a bent portion extending outwardly and having at its peripheral end a liquid fuel scattering end, and an inner gasifying member located inside the rotary gasifying member to form a unit therewith and having connected to a lower end of its wall a fuel air-mixture gas diffusing wall extending outwardly a greater distance than the bent portion of the rotary gasifying member. The inner gasifying member is formed at its forward end with an air supply opening communicated through an air passage with an air blowing chamber. An annular flame ejecting upright wall is formed contiguous with a fuel-air mixture gas diffusing wall and provided at its end with a liquid fuel rescattering portion.

Abstract: In the construction of a liquid fuel burner in which liquid fuel is subjected to two-staged combustion, active and passive expedients are preferably combined for complete burning of the liquid fuel. The active expedient employs specified edge construction of a fuel scatter ring for production of ideally atomized fuel whereas the passive expedient employs a barrier construction arranged at the open front end of a combination cylinder for effective prevention of fuel drop causable of incomplete fuel burning.