Abstract: A combustion membrane for a gas burner including a fabric having two opposite fabric surfaces, which form a combustion surface exposed on the outer side and an inner surface facing towards an inner side respectively, where the fabric forms an interlacing of metal wires having warp threads and weft threads transverse to the warp threads, and where both fabric surfaces form ribs in high relief alternating with valleys in low relief and that both the ribs and the valleys have an extension, in at least one direction in the plane of the fabric, greater than the space occupied by at least three consecutive warp threads in the weft direction and greater than the space occupied by at least three consecutive weft threads in the warp direction.

Abstract: A combustion membrane for a gas burner including a fabric having two opposite fabric surfaces, which form a combustion surface exposed on the outer side and an inner surface facing towards an inner side respectively, where the fabric forms an interlacing of metal wires having warp threads and weft threads transverse to the warp threads, where the fabric has localized first areas with reduced gas permeability, alternated with localized second areas with higher gas permeability than the first areas, and both the first areas and the second areas have an extension, in at least one direction in the plane of the fabric, greater than the space occupied by at least three consecutive warp threads in the weft direction and greater than the space occupied by at least three consecutive weft threads in the warp direction.

Abstract: A combustion membrane for a gas burner is provided. The combustion membrane has a fabric or mesh of interlaced metal wires, having two opposite interlacing surfaces forming a combustion surface and an inner surface of the fabric or mesh, respectively. The metal wires are formed by continuous metal fibers that form a yarn of mass per length ranging from 0.8 g/m to 1.4 g/m.

Abstract: A combustion membrane (14) for a gas burner (2) comprises a fabric or mesh (21) of interlaced metal threads (22), having two opposite interlacing surfaces (19, 20) which form a combustion surface (19) and an inner surface (20) of the fabric/mesh (21), respectively, wherein the metal threads (22) are formed by twisted metal fibers (22) to form a yarn and: the individual metal fibers (22) are shorter than the yarn (22) formed therefrom, and free ends (22?) of the metal fibers (22) protrude divergently from the yarn (22) along its longitudinal extension and make the yarn (22) hairy, and the metal thread (22) is a yarn (22) of mass per length in the range from 0.8 g/m to 1.4 g/m.

Abstract: A combustion membrane (14, 14?) for a gas burner (2) forms a multilayer panel (22) including a gas-permeable diffuser layer (24) of a porous or fibrous solid material other than metal sheet, the diffuser layer (24) forming a combustion surface (25) facing an outer side (17), a support layer (26) formed by a metal sheet (32), arranged on an inner side (23) with respect to the diffuser layer (24), opposite to the combustion surface (25), and connected to the diffuser layer. The metal sheet has a pattern (27) of passage openings (28), a local deviating layer (29), bordering the support layer (26). Diverter flaps (30) bent transversely out of the support layer (26) and delimited by cutting or tearing edges (42) of the support layer metal sheet (32), form guide surfaces (31) oblique to a direction (40) orthogonal to an extension plane (41) of the multilayer panel (22).

Abstract: A burner comprises a tubular diffuser wall and an inlet passage of a gas mixture in the diffuser wall, as well as a distribution diaphragm having a distribution opening which forms a central passage section and a plurality of peripheral passage sections, in the shape of rays or branches, extending from the central passage section towards the diffuser wall, and in which the peripheral passage sections and the central passage section are connected together to form a single hole.

Abstract: A burner comprises a tubular diffuser wall and an inlet passage of a gas mixture in the diffuser wall, as well as a distribution diaphragm having a distribution opening which forms a central passage section and a plurality of peripheral passage sections, in the shape of rays or branches, extending from the central passage section towards the diffuser wall, and in which the peripheral passage sections and the central passage section are connected together to form a single hole.

Abstract: A gas burner for a heater comprises a planar metal frame portion with an elongated opening defined by two longitudinal edges and by two transversal end edges, as well as a combustion membrane in the form of a tridimensional shell, connected to the frame portion along the longitudinal and transversal edges, wherein the combustion membrane has a diffuser layer, which forms an outer combustion surface made of a perforated metal sheet, and which extends between the two longitudinal edges with a single curvature out of the plane of the frame portion, and two closure portions made of metal sheet extending from the transversal edges out of the plane of the frame portion and which close end areas between the diffuser layer and the transversal edges of the frame portion.

Abstract: Herein a gas boiler burner (1) is described comprising a diffuser, suitable for diffusing premixed fuel gases in a combustion chamber, in which the diffuser comprises a diffuser central portion (10) and two diffuser longitudinally peripheral portions (5), the two diffuser longitudinally peripheral portions (5) being connected together through the- central diffuser portion (10), the central diffuser portion (10) extending longitudinally in a direction perpendicular to the flow of the fuel gases over a length l greater than zero and having transversal cross- sections shaped as a circumference arc having a uniform radius of curvature r, each of the diffuser longitudinally peripheral portions (5) being shaped as a portion of a sphere having radius r.

Abstract: A temperature sensor for a burner comprises two metal wires implementing a thermocouple, a protection sheath receiving the two metal wires, and a head in metal material having a front side intended to be facing the environment, the temperature of which is intended to be measured, and a rear side opposite the front side, in which the two metal wires are connected in a thermal exchange relationship to the head rear side, and the head comprises a front portion connectable to a burner wall of the burner so that the thermocouple is connectable to the burner by means of said metal head.

Abstract: A temperature sensor for a burner comprises two metal wires implementing a thermocouple, a protection sheath receiving the two metal wires, and a head in metal material having a front side intended to be facing the environment, the temperature of which is intended to be measured, and a rear side opposite the front side, in which the two metal wires are connected in a thermal exchange relationship to the head rear side, and the head comprises a front portion connectable to a burner wall of the burner so that the thermocouple is connectable to the burner by means of said metal head.

Abstract: A burner suppliable with a mixture of air and fuel comprises a body of the burner provided with a diffuser in the surface of which openings are made for the exit of said mixture delivered into the body of the burner, and a distributing device inserted inside said body of the burner. The distributing device comprises a regulating element provided with further openings for the transit of the mixture, the regulating element being movable within the body of the burner. The body of the burner can be subdivided into a plurality of sectors, each one of which is independently suppliable by the other sectors.

Abstract: A burner suppliable with a mixture of air and fuel, comprising a diffuser on which holes are made for the passage and subsequent combustion of said mixture, said diffuser being divided into a plurality of diffuser elements adjacent to one another, said diffuser elements are fixable to a support and distribution element provided with first coupling elements for coupling with said diffuser elements and with openings for distributing said mixture to said diffuser elements.

Abstract: A burner suppliable with a mixture of air and fuel comprises a body of the burner provided with a diffuser in the surface of which openings are made for the exit of said mixture delivered into the body of the burner, a distributing device inserted inside said body of the burner, said distributing device comprises a regulating element provided with further openings for the transit of said mixture, said regulating element being movable within said body of the burner. The body of the burner can be subdivided into a plurality of sectors, each one of which is independently suppliable by the other sectors.

Abstract: A burner suppliable with a mixture of air and fuel, comprising a burner body provided with a diffuser in which openings are made for the passage and subsequent combustion of said mixture, said diffuser is divided into a plurality of diffuser elements that are adjacent to one another, each diffuser element being at least partially free to dilate in at least one direction.

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 (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 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.