Abstract: A burner (1), fed with a mixture of fuel and air, comprising a body (2) consisting of two half-shells having a plane of symmetry, inside said body a Venturi tube (3) being defined, provided with and inlet (4) into which said mixture of fuel and air is introduced, said Venturi tube (3) communicating upwardly with a distributing chamber (5) of said mixture of fuel and air, said distributing chamber (5) communicating upwardly with a burner head (8), closed upwardly by a diffuser (9), on which openings are made for the outflow and the subsequent combustion of said mixture of fuel and air, said distributing chamber (5) exhibits a first portion (6) and a second portion (7), said first portion (6), communicating with said Venturi tube, comprising at least a first stretch (6a; 6c; 6e) having a cross section of substantially constant width and at least a second stretch (6b; 6d) having cross section that increases progressively along a direction parallel to said plane of symmetry towards an end of said distributing cha

Abstract: A method for a security control of a burner, provided with a body comprising a diffuser in which apertures for the flow of a mixture of air and fuel are made, comprises detecting a temperature representative of the temperature of said diffuser in at least one zone of the diffuser, generating a signal having an intensity depending on said representative temperature.

Abstract: A burner (1), fed with a mixture of fuel and air, comprising a body (2) consisting of two half-shells having a plane of symmetry, inside said body a Venturi tube (3) being defined, provided with and inlet (4) into which said mixture of fuel and air is introduced, said Venturi tube (3) communicating upwardly with a distributing chamber (5) of said mixture of fuel and air, said distributing chamber (5) communicating upwardly with a burner head (8), closed upwardly by a diffuser (9), on which openings are made for the outflow and the subsequent combustion of said mixture of fuel and air, said distributing chamber (5) exhibits a first portion (6) and a second portion (7), said first portion (6), communicating with said Venturi tube, comprising at least a first stretch (6a; 6c; 6e) having a cross section of substantially constant width and at least a second stretch (6b; 6d) having cross section that increases progressively along a direction parallel to said plane of symmetry towards an end of said distributing cha

Abstract: A system for feeding a plurality of burners (2a, 2b, 2c, 2d, 2n) includes a manifold (1) into which a flow of gaseous fuel is introduced via an inlet duct (5), said manifold (1) including an hollow body (3) provided with a plurality of outlets (6) each of which can be connected to a respective burner (2a, 2b, 2c, 2d, 2n), said manifold (1) further comprises distributing means (4) for selectively distributing said fuel to said burners (2a, 2b, 2c, 2d, 2n), said distributing means (7) being provided with connecting means (8) with one or more of said outlets (6).

Abstract: A burner (2; 2a; 11; 25; 31; 34), comprising a burner body (12; 26; 32; 35), wherein a mixture of fuel and air can be introduced, and a burner head (14; 27; 32; 35a; 41), wherein a plurality of openings (15; 28; 40; 44) is provided, thr ough which said mixture can flow, is associated with shield means (3; 16; 29: 33; 36; 42) shielding said burner head (14; 27; 32; 35a; 41) suitable for limiting the maximum temperature that said burner head (14; 27; 32; 35a; 41) can reach during working of the burner (2; 2a; 11; 25; 31; 34).

Abstract: A burner (1), with natural or forced suction, comprising a burner body (2), into which a mixture of fuel and air is introduced, said body (2) being provided with openings (4) for the flow and subsequent combustion of said mixture and comprising a Venturi tube (3) into which a jet of said fuel is introduced under pressure and extension means (6) for said Venturi tube (3); said extension means (6) is removably coupled with said Venturi tube (3).

Abstract: A burner fed with a hyper-stoichiometric mixture of air and gas-fuel comprises a diffuser on which rows of similarly shaped and evenly spaced parallel slots for the flow of said mixture are provided; said rows are separated from each other by an intermediate portion of diffuser having a substantially constant width and provided with further slots for the flow of said mixture, said further slots being non-parallel to said slots.

Abstract: A method for a security control of a burner, provided with a body (1) comprising a diffuser (2; 8) in which apertures (3) for the flow of a mixture of air and fuel are made, comprises detecting a temperature representative of the temperature of said diffuser in at least one zone of the diffuser, generating a signal having an intensity depending on said representative temperature.

Abstract: A burner fed with a flow of an air-fuel mixture, has a venturi tube arranged at the inside of a tubular burner body provided with through apertures through which said flow passes. The venturi tube is supported and centered in the body at one of its ends. Additional support and centering means of said venturi tube are provided at the inside of said tubular body. The additional support and centering means are provided with control means controlling the distribution of said flow of said air-fuel mixture.

Abstract: A gas burner comprises an elongated tubular body with a sidewall which has outer end edges between which there are apertures which pass through the sidewall; a flange with a central through hole and an opposite base cap, the sidewall, flange and base cap being attached to one another in such a way that together they define a first mixing chamber, in which a flow of gas and air, received through the flange, exits the tubular body through the apertures in the sidewall; the flange and base cap having opposite guides; the sidewall being wound in a spiral and having juxtaposed longitudinal edges with fluid tight seals and outer end edges inserted in the guides with a play designed to allow the perimeter of the sidewall to expand or contract according to changes in the temperature of the body.