# US 9,004,913 B2 · Gas burner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,004,913 B2 - Document ID: US9004913B2 - Status: Granted - Kind: B2 - Application number: 12/864,376 - Filed: 2009-01-20 - Published: 2011-10-06 - Granted: 2015-04-14 - Earliest claimed: 2008-01-28 - Assignees: Tetral Laval Holdings & Finance S.A. - Applicants: Gil Rochat; Pierre Fayet; Thomas Richter; Bernhard Zobel - Inventors: Gil Rochat; Pierre Fayet; Thomas Richter; Bernhard Zobel - Web page: https://patentgrep.com/patent/US9004913B2 ## CPC - F23D 14/586: {formed by a set of sheets, strips, ribbons or the like} - C23C 16/453: passing the reaction gases through burners or torches, e.g. atmospheric pressure CVD (C23C16/513 takes precedence; for flame or plasma spraying of coating material in the molten state C23C4/00) - F23D 14/10: with elongated tubular burner head - F23D 99/004: {for use in particular heating operations} - F23D: BURNERS - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) ## Abstract A gas burner, which is particularly suitable for flame treatment of substrates having large surfaces, e.g. for coating such surfaces in a combustion chemical vapor deposition (CCVD) process, includes a burner body with a gas supply connection and a nozzle plate, wherein the burner body and the nozzle plate constitute together a gas plenum and the nozzle plate constitutes a perforated wall section of the plenum. The nozzle plate includes a large number of nozzles extending from a plenum side to a flame side of the nozzle plate and it is made of a plurality of sheets which are arranged in a stack and extend substantially perpendicular or substantially parallel to the nozzle extension. The sheets include through openings, wherein the through openings of all sheets are at least partly aligned with each other, or they have a comb-like form. ## Claims ### Claim 1 A gas burner for establishing an array of flames for a flame treatment of a substrate surface, the gas burner comprising: a burner body with a gas supply connection; and a nozzle plate; wherein the burner body and the nozzle plate together constitute a gas plenum, wherein the nozzle plate constitutes a perforated wall section of the gas plenum and comprises a plurality of nozzles extending through the nozzle plate from a plenum side to a flame side of the nozzle plate, wherein the nozzle plate is an element which is formed independently from the burner body and comprises a plurality of sheets made of sheet metal comprising determinate through openings, wherein said plurality of sheets are arranged in a stack and are fixed to each other, wherein all sheets comprise a plurality of the through openings, and in the stack the plurality of through openings of the sheets are aligned to each other to form together the nozzles, wherein the plurality of sheets of the nozzle plate includes a plurality of first type sheets with a pattern of identical through openings that are aligned with respect to each other, one of the first type sheets defining the flame side of the nozzle plate, wherein each sheet in the stack comprises a planar upper and lower side, wherein the upper and lower sides of neighboring sheets in the stack lie surface upon surface against one another within the nozzle plate so that gas is directed to flow through the plurality of nozzles and not between the neighboring sheets in the stack, wherein the first type sheet which defines the flame side of the nozzle plate is the furthermost sheet from the plenum side, and wherein the pattern of identical through openings in said first type sheet which defines the flame side of the nozzle plate define nozzle openings haying a diameter which is in a longest direction smaller than a length of the nozzles in a gas stream out direction, and wherein each nozzle opening feeds one flame of an array of flames produced by the burner on the flame side of the nozzle plate, the array of flames thus being configured for treatment of the substrate surface. ### Claim 2 (depends on 1) The gas burner according to claim 1, wherein the nozzle plate further comprises at least one second type sheet, which constitutes the plenum side of the nozzle plate and which comprises a pattern of through openings that is at least partly the same pattern of through openings as the first type sheet which defines the flame side of the nozzle plate, wherein the pattern of through openings of the second type sheet is displaced relative to the pattern of through openings of the first type sheets, and wherein the displacement (d) is smaller than the dimension of the cross section of the through openings of the pattern of through openings of the first type sheets. ### Claim 3 (depends on 2) The gas burner according to claim 2, wherein the second type sheet comprises further through openings which are larger than the cross section of the through opening of the pattern of the first type sheets. ### Claim 4 (depends on 1) The gas burner according to claim 1, wherein the sheets are fixed to each other by being clamped against each other in a predetermined position relative to the burner body. ### Claim 5 (depends on 1) The gas burner according to claim 1, wherein the sheets are made by punching, laser-cutting, jet-cutting or milling. ### Claim 6 (depends on 1) The gas burner according to claim 1, wherein the sheets have a thickness of between 0.5 and 2 mm. ### Claim 7 (depends on 1) The gas burner according to claim 1, wherein the sheets consist of steel, brass or bronze. ### Claim 8 (depends on 1) The gas burner according to claim 1, wherein the sheets further comprise alignment bores, and wherein the sheets are fixed to each other by bolts or rivets extending through the alignment bores. ### Claim 9 (depends on 1) The gas burner according to claim 1, wherein the plenum comprises a plurality of plenum compartments, and wherein each of the plurality of plenum compartments comprises a separate gas supply connection. ### Claim 10 (depends on 9) The gas burner according to claim 9, wherein the nozzle plate has a rectangular form and the plurality of plenum compartments extend parallel to a length or to a width of the nozzle plate. ### Claim 11 A method for flame treatment comprising the steps of: providing a substrate having a surface for receiving flame treatment; providing a gas burner comprising a burner body with a gas supply connection, and a nozzle plate, wherein the burner body and the nozzle plate together constitute a gas plenum, wherein the nozzle plate constitutes a perforated wall section of the gas plenum and comprises a plurality of nozzles extending through the nozzle plate from a plenum side to a flame side of the nozzle plate, wherein the nozzle plate is an element which is formed independently from the burner body and comprises a plurality of sheets made of sheet metal comprising determinate through openings, wherein said plurality of sheets are arranged in a stack and are fixed to each other, wherein all sheets comprise a plurality of the through openings, and in the stack the plurality of through openings of the sheets are aligned to each other to form together the nozzles, wherein the plurality of sheets of the nozzle plate includes a plurality of first type sheets with a pattern of identical through openings that are aligned with respect to each other, one of the first type sheets defining the flame side of the nozzle plate, wherein each sheet in the stack comprises a planar upper and lower side, wherein the upper and lower sides of neighboring sheets in the stack lie surface upon surface against one another within the nozzle plate so that gas is directed to flow through the plurality of nozzles and not between the neighboring sheets in the stack, wherein the first type sheet which defines the flame side of the nozzle plate is the furthermost sheet from the plenum side, and wherein the pattern of identical through openings in said first type sheet which defines the flame side of the nozzle plate define nozzle openings having a diameter which is in a longest direction smaller than a length of the nozzles in a gas stream out direction, and wherein each nozzle opening feeds one flame of an array of flames produced by the burner on the flame side of the nozzle plate, the array of flames thus being configured for treatment of the substrate surface; and treating the substrate surface with the array of flames. ### Claim 12 (depends on 11) The method according to claim 11, wherein the substrate has the form of a quasi endless web and is transported on a rotating drum past or through a flame band produced by the burner. ### Claim 13 (depends on 11) The method according to claim 11, wherein the flame treatment is a combustion chemical vapor deposition process. ### Claim 14 (depends on 11) The method according to claim 11, wherein the plenum comprises a plurality of plenum compartments, wherein each of the plurality of plenum compartments comprises a separate gas supply connection, and wherein different gases or gases of different pressures are supplied to different plenum compartments using the separate gas supply connections.