Improved gas burner

Abstract

Gas burner provided with a plurality of concentric circular flame crowns, with a burner body apt to be mounted on the surface of a cooking plate, a burner body apt to be mounted on the surface of a cooking plate and provided with a first chamber for the diffusion of the air / gas mixture, and whose top is closed by a first cover, a second outer annular burner surrounding said central burner, a first gas inlet in communication with said body, a first gas injector able of injecting a gas flow into a respective Venturi pipe to said first central burner, a second gas inlet in communication with said body, wherein said second annular burner is provided with two separate diffusion chambers, and whose top is closed by a second cover, wherein said second gas inlet is in communication with said two separate chambers which are not in communication to each other, two distinct injectors connected with said second gas inlet and placed on the same end position of said second gas inlet, two respective horizontally oriented Venturi pipes, each of which being able of supplying with an air / gas mixture a respective of said two diffusion chambers; said first gas injector and the respective Venturi pipe for the central burner are horizontally oriented, and preferably they are positioned between the two Venturi pipes dedicated to said two diffusion chambers. Said two horizontally oriented Venturi pipes for the outer annular burner and the relevant gas injectors are angled to each other, and this angle is over 70 DEG . Preferably the Venturi pipes for the annular burner admit into respective curved chambers provided with respective vertical gas passages, extended for the whole length of said curved chamber, connecting them to respective diffusion chambers.

Description

technical field [0001] The invention presented here relates to an improved, preferably domestic, gas burner, typically used in cooking gas appliances. Background technique [0002] In the following specification reference is made to a gas burner provided with a central body having a peripheral flame crown and a peripheral body provided with two or more flame crowns oriented inwardly and outwardly, but it should be understood that , what is said can also be used for gas burners provided with a peripheral body on which only one flame crown is arranged, which can be oriented inwardly or outwardly, and is therefore also valid for this gas burner . [0003] The most relevant prior art for the present invention is undoubtedly European Patent Application No. 07119078.9; this document / patent is cited here; therefore, for the sake of brevity, what is discussed with respect to the prior art is here only reviewed and not repeated. [0004] Said European patent application proposes a ...

AI Technical Summary

Problems solved by technology

[0011] However, said gas appliance proves to be somewhat dangerous to use, as two horizontal injectors supply gas to only one outer chamber (47) and this could be inside said chamber when one of said injectors is accidentally closed Some safety issues arise in the gas cycle of

[0012] Also, the vertical orientation of the central venturi may reduce the possibility of using the gas burner in appliances with very low height restrictions

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