Adjustable combustion rate air/fuel proportioned burner assembly

An improved adjustable combustion rate, air/fuel proportioned burner comprising:

• an oxidizing gas housing defining an oxidizing gas chamber for containing an oxidizing gas;
• said oxidizing gas chamber including an oxidizing gas exit wall with a plurality of oxidizing gas exit openings therein;
• a gaseous fuel tube defining a gaseous fuel chamber, said gaseous fuel chamber disposed within said oxidizing gas chamber;
• said gaseous fuel chamber having a wall generally coextensive with said oxidizing gas exit wall of said oxidizing gas chamber, and having gaseous fuel openings therein;
• a rotatable face plate covering a portion of said coextensive wall of said oxidizing gas chamber and simultaneously said wall of said gaseous fuel chamber, and having openings therein substantially corresponding in shape, size and location to said oxidizing gas openings in said wall of said oxidizing gas chamber and said gaseous fuel openings in said wall of said gaseous fuel chamber, said rotating face plate being connected to said gaseous fuel tube and being rotatable by rotation of said fuel tube;
• whereby upon rotation of said rotatable face plate a selected and variable cross-sectional area of said oxidizing gas openings and said gaseous fuel openings are simultaneously opened to the ambient atmosphere for respective flow therefrom of oxidizing gas and gaseous fuel to maintain the preselected ratio of oxidizing gas to the gaseous fuel upon combustion thereof.