Combustion device

A device for warming air, comprising:

• a burner means having an air deflecting plate, an outer wall adjacent said air deflecting plate and defining with said air deflecting plate a combustion chamber, the edges of said air deflecting plate and said outer wall being spaced to define an outlet from said combustion chamber;
• a burner constituted by an outer cylindrical wall and an inner cylindrical wall spaced from said outer cylindrical wall to define an annular flame forming space therebetween and opening into said combustion chamber, and a wick extending into said flame forming space, the outside surface of said outer cylindrical wall and the inner surface of said inner cylindrical wall being exposed to the space outside said combustion chamber, said inner and outer cylindrical walls having vaporizing air ports therein adjacent said wick where it extends into said flame forming space, and premixing air ports therein immediately past the end of the wick in the flame forming space;
• means for supplying a vaporizable fuel to said wick;
• and
• means for directing a flow of air to be warmed against the outside of said deflecting plate for being deflected past said outlet for producing a negative pressure in said combustion chamber, whereby the flow of air to be warmed past the outlet causes combustion air to be drawn through said ports in said cylindrical walls, which causes fuel to be dispensed from the wick and burned in proportion to the flow of the air to be warmed past said outlet.