Stove and burner assembly

Abstract

A burner assembly for liquid fuels where a body member is rotatable about a central stem member and movable axially thereof to open a fuel valve and also to move a flow control member extending into the nozzle.

What is claimed is: 
     
       1. A burner assembly for liquid fuels comprising a stem member having an axial fuel passage therein, a body member engaging said stem member and axially movable thereon upon relative rotation therebetween, a valve defined between said stem .[.passage.]. .Iadd.member .Iaddend.and said body member, said body member including a nozzle having a cylindrical portion and a lower tapered portion, a needle extending into .Iadd.and substantially filling .Iaddend.said cylindrical portion of said nozzle .Iadd.to close said nozzle .Iaddend.when .[.the assembly.]. .Iadd.said valve .Iaddend.is in a closed position and .Iadd.the end of said needle .Iaddend.being retractable into said tapered portion to control the nozzle opening when said body is moved relative to said stem to open said valve. 
     
     
       2. The burner of claim 1 wherein said stem and said body member have mating tapered surfaces which define said valve. 
     
     
       3. The burner of claim 2 wherein the tapered surface of said body member is defined on a movable insert backed by a resilient member. 
     
     
       4. The burner of claim 2 wherein said stem member has the tapered portion on the upper end thereof and a fuel passage is defined in said stem through said tapered surface to said axial passage. 
     
     
       5. The burner of claim 1 wherein said nozzle is defined in a nozzle member threadably received in said body member, and said nozzle member also provides the tapered surface of said body member. 
     
     
       6. The burner assembly of claim 1 further including a stove body including a dished portion, means supporting said burner assembly in said dished portion and means coupled to said body member and extending radially therefrom beyond said dished portion for rotating said body. 
     
     
       7. The assembly of claim 6 wherein said extending means is movable in an arc on a flat portion of said stove body. 
     
     
       8. The burner assembly of claim 1 wherein said rotation of said body member substantially 90° about said stem moves said burner between full open and full closed positions. .Iadd. 9. The burner of claim 1 wherein the portion of said needle extending into said nozzle has a uniform cross section..Iaddend..Iadd. 10. The burner of claim 1 wherein the cross-sectional area of the lowered tapered portion of said nozzle less the cross-sectional area of said needle is substantially the same as the cross-sectional area of the cylindrical portion of said nozzle. .Iaddend.