Patent ID: 8763600

Claim:
Gas burner comprising a plurality of burning portions adapted to receive a gas flow from gas supply means that comprise an injector means adapted to eject a gas flow diverging along the flow direction to define a spreading angle γ, characterized in that gas-flow adjusting means are provided for modifying said spreading angle γ such that said gas flow is enabled to supply one or more of said plurality of burning portions through at least one of a first chamber and a second chamber coaxial with the first chamber depending on the adjustment of said spreading angle γ; wherein at a first adjustment of said spreading angle γ, said gas flow is enabled to supply through the first chamber and not through the second chamber; wherein at a second adjustment of said spreading angle γ, said gas flow is enabled to supply through the second chamber; wherein said plurality of burning portions are supplied by a single injector means; and wherein said gas-flow adjusting means are formed on said injector means.