US3258058A - Radiant gas burners - Google Patents

Radiant gas burners Download PDF

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US3258058A
US3258058A US109224A US10922461A US3258058A US 3258058 A US3258058 A US 3258058A US 109224 A US109224 A US 109224A US 10922461 A US10922461 A US 10922461A US 3258058 A US3258058 A US 3258058A
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Prior art keywords
plate
slots
mixture
passages
gas
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US109224A
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English (en)
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Herault Jean A D P L
Joseph M J Morgand
Louis P R Lepage
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Antargaz Distribution de Gaz SA
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Antargaz Distribution de Gaz SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/125—Radiant burners heating a wall surface to incandescence
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/126—Radiant burners cooperating with refractory wall surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/149—Radiant burners using screens or perforated plates with wires, threads or gauzes as radiation intensifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
    • F23C2700/04—Combustion apparatus using gaseous fuel
    • F23C2700/043—Combustion apparatus using gaseous fuel for surface combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/102—Flame diffusing means using perforated plates

Definitions

  • the heat radiating capacity or performance of gas burners operating in that manner is well known to be dependent upon (I) the energy input or fuel consumption of the burners, which is limited by the pressure head required for the flow of the gas mixture through the burner plate or plates, and (2) the amount of the energy input converted into radiation, which depends upon the area of, and the temperature attained by the radiating surface.
  • the values of these factors are in turn closely related to the form of construction of the plates used as the active elements of the burners.
  • outlets are provided in the form of slots which extend into and along the outer side of the plate so that each slot connects the outer ends of a plurality of the inlets with the outer or flame surface of the plate and provides increased passage freedom for the gas mixture as it flows through the zone of the greatest increases of its temperature and its viscosity.
  • the slots are provided in the form of slots which extend into and along the outer side of the plate so that each slot connects the outer ends of a plurality of the inlets with the outer or flame surface of the plate and provides increased passage freedom for the gas mixture as it flows through the zone of the greatest increases of its temperature and its viscosity.
  • the slots are provided in the form of slots which extend into and along the outer side of the plate so that each slot connects the outer ends of a plurality of the inlets with the outer or flame surface of the plate and provides increased passage freedom for the gas mixture as it flows through the zone of the greatest increases of its temperature and its viscosity.
  • the slots are provided in the form of slots which extend into and along the outer side of the plate so
  • the loss of pressure occurring in an outlet slot having a given gas delivery area and a width restricted so that it will not permit back-firing is substantially smaller than that occurring in a plurality of tubular ducts, whatever their shape, which provide the same delivery area and are also restricted in width so that they will not permit backfiring. It has also been found that the loss of pressure occurring in such a slot may be further reduced by a construction in which the slot cuts across or is intersected by a plurality or row of tubular ducts so that the orifices, in effect, widen the slot at spaced locations by extending transversely through the slot to the outlet edge thereof.
  • the limiting width at which back-firing will occur is considerably greater in the case of a tubular duct such as one of circular section than it is in the case of a slot-being, for example, depending upon the composition of the gas mixture, from 1.0 to 3.2 mm. in the former case and from 0.5 to 1.6 mm. in the latter-it has been found that nearly the same limiting dimensions are still valid for a construction in which slots intersect and are traversed by rows of tubular ducts, such as end portions of cylindrical gas passages extending through the plate.
  • the slot-traversing ducts in such a construction may therefore be formed with the width provided for ducts not interconnected by a slot, without giving rise to a hazard of back-firing.
  • Radiant burner plates embodying the foregoing principles to give improved performance qualities may be provided in various forms of construction, and various types or compositions of heat-insulating refractory materials may be used successfully for the manufacture of the plates.
  • the inlets are provided by a multitude of individual tubular ducts of circular cross section and of any desired diameter or progression of diameters consistent with the strength requirements; and rows of these ducts are connected at their outer ends with continuous outlet slots of the character described.
  • the inlet ducts are made or joined with cylindrical end portions intersected by and traversing the outlet slots to the outer edges of the slots; these end portions being limited in width, for example, to a diameter not larger than 1.0 to 2.5 mm., depending upon the composition of the gas mixture, so that they will not allow the flame to back-fire through them.
  • the radiation output of gas burners of the type described can be further enhanced by forming the burner plates with outer surfaces comprising flame channels recessed in the outer side of the plate to the outlets of gas passages in the plate.
  • the flame channels are made wider than the passage outlets and so wide that the gas streams entering them will expand abruptly and become ignited Within the channels.
  • the flame channels are formed along outlet slots with lengths substantially coextensive with those of the slots.
  • Their cross section preferably is substantially rectangular, and in preferred embodiments their depth is as great as or greater than their width but not in excess of about 2.5 mm.
  • Their width in such embodiments is usually in the range of about 1.2 to 1.8 mm.
  • the flames formed within the flame channels burn in contact with the side walls of the channels and close to the contiguous unrecessed portions of the plate surface, thus rendering the surface highly incandescent and increasing the ignition rate of the burner and keeping the heat absorption of the plate surface at high etficiency even when there are fluctuations in the velocity of the gas streams entering the channels.
  • the flame channels thus enhance the radiation output of the burner, both by causing the temperature of the radiating surface to become higher than would be the case in their absence and by increasing the effective radiating area of that surface.
  • the number of flame channels that may be formed in the plate is limited by the fact that if the plate is provided with the greatest practicable number of gas passages terminating in outlet slots, the space available at its outer side is usually not suflicient to enable the formation of a separate flame channel for every outlet slot. Too little room, if any, then remains for the provision of walls to lie between, and border the flame channels.
  • the passages formed in them may be rows of individual passages, such as rows of cylindrical ducts not larger than about 1.0 mm. to 3.2 mm. in diameter, depending upon the composition of the gas mixture, which ducts extend through the entire thickness of the plate and are arranged in alternation with those of the gas passages which deliver into flame channels.
  • the radiant burner plates provided according to this invention may be composed of any of a wide variety of heat-insulating refractory materials, the composition of which may be selected so as to give the plates valuable combinations of properties with respect to their mechanical strength and thermal conductivity and their durability and efficiency in service.
  • plates having extraordinary qualities of strength and serviceability, together with extraordinarily high radiation outputs can be provided according to the invention by making the plates with a thickness considerably greater than is necessary to prevent excessive heating of the inner surface and by making the plates of a molded, relatively dense, baked ceramic or other heat-insulating refractory material having less internal porosity and correspondingly a greater thermal conductivity and much greater strength and durability than would be suitable for a ceramic plate of the minimum thickness effective to prevent excessive heating at the inner surface.
  • Radiant gas burners made with plates of the constructions set forth herein perform with substantially greater radiating efliciencies than do those made with plates of the types currently used in the art.
  • a screen arrangement of this nature gives excellent results when the screen is placed relatively close to the plate and the openings of the screen occupy a proportion between 25 and 60% of its total surface area.
  • a burner so constituted and using a plate or plates constructed in accordance with the present invention can operate safely without any supply of secondary air at the face of the plate.
  • all the air required for the completely hygienic combustion of the fuel can be supplied by the mixer into the mixing chamber of the burner and thence through the plate, while the fuel input is still maintained at a rate giving a very high burner efficiency.
  • the elimination of secondary air adds to the radiation output, since secondary air reduces the working temperature of the plate, of the flame gases and of the screen.
  • FIG. 1 is a fragmentary plan view of face of a radiant burner embodying the invention, portions of the outer grid or screen being broken away;
  • FIG. 2 is a fragmentary schematic cross-section through such a burner
  • FIG. 3 is an enlarged fragmentary isometric view, partly in section, of one form of a burner plate constructed according to the invention
  • FIG. 4 is a similar view of another form of such plate
  • FIG. 4A is an enlarged view of a portion of the structure of FIG. 4;
  • FIG. 5 is an enlarged fragmentary isometric view, partly in section, of a third form of such plate
  • FIG. 6 is a similar view of a fourth form thereof.
  • FIG. 7 is a similar view of a fifth form thereof.
  • FIG. 9 is a similar view of a seventh form thereof.
  • FIG. 10 is an enlarged axial cross-sectional view of a fuel gas injector especially suitable for use as an element of a Venturi-type mixer for the formation of gas mixtures of extraordinarily high air content at the gas intake of a burner embodying the invention.
  • FIGS. 1 and 2 of the drawings The general arrangement of a radiant gas burner making use of the invention is indicated in FIGS. 1 and 2 of the drawings.
  • a housing 10 forms a gas distributing chamber 12 which is bounded at its forward side by a perforated ceramic plate structure 14 supported by flanges 11 secured to the side walls of the housing.
  • the plate structure 14 preferably is composed of a plurality of individual perforated ceramic plates, or plate sections, secured together in edge-to-edge relation so as to provide a complete burner plate of the desired size, having, for example, a total exposed area of about 2.7 square decimeters.
  • a woven wire screen 16 preferably made of a heatresistant metal such as a nickel-chromium alloy, is spaced at a distance of, for example, 9 mm. forwardly from the face 15 of the ceramic plate structure.
  • the margins of this screen are laid on the outer surface of a rectangular refractory spacer 17 which is positioned on forward portions 11a of the flanges 11, and they are held in place by flanges 18 formed on a forward extension 19 of the housing structure.
  • the gas mixture to be burned is supplied, for example, by the injection of a suitable fuel gas from a gas supply pipe 20 through an injector 21 into the mouth of a Venturi-type mixer 22 leading into a mixing chamber 24 at the backward side of the housing. Air in the required proportion is drawn into the tube mouth by the jet of fuel gas entering tube 22 from the injector 21. The resulting combustible gas mixture flows from chamber 24 into chamber 12 and thence in a multitude of minute streams through the passages in the plate structure 14, to be burned at the outer side 15 of that structure inside the combustion space bordered by the screen 16 and the spacer 17.
  • the plate 14A is formed as a perforated body of a suitable heat-insulating refractory material, having a thickness of, for example, about 14 mm. and composed, for example, of a relatively dense baked ceramic material, such as a ball clay composition baked to a specific gravity of, for example, about 1.5, and having a thermal conductivity of, for example, between .55 and .65 kilocal./hr./m./ C., which gives the passage-defining walls a relatively high intrinsic mechanical strength.
  • a suitable heat-insulating refractory material having a thickness of, for example, about 14 mm. and composed, for example, of a relatively dense baked ceramic material, such as a ball clay composition baked to a specific gravity of, for example, about 1.5, and having a thermal conductivity of, for example, between .55 and .65 kilocal./hr./m./ C., which gives the passage-defining walls a relatively high intrinsic mechanical strength.
  • the inlets are mutually surrounded and spaced apart in the body 30 by interconnected walls of the ceramic material, such as indicated at 34, which give the plate the required mechanical strength.
  • These inlets have any desired diameter suitable to promote full flow of the gas mixture while preserving the required plate strength, for example, one of about 1.2 mm. They extend through the body of the plate for a distance of, for example, 10 mm.
  • the width of each slot desirably is, for example, 0.5 mm. in the case of manufactured gas, 0.7 mm. in the case of propane and 0.9 mm. in the case of natural gas or butane.
  • Each slot 36 interconnects the outer ends of the tubular ducts of the related row with portions 37 of the outer surface of the plate.
  • These outer surface portions in the plate 14A are the bottoms of rectangular flame channels 38 which are considerably wider than the slots 36, having, for example, a width of about 1.35 mm. so that the gas streams will be ignited in them, and which are recessed in the outer side of the body to a depth of about 2 mm. from the facial portions 39 of its outer surface.
  • burner plate shown in FIG. 4 and FIG. 4A is similar in many respects to that of FIG. 3, but it is distinctly superior to the latter in its operating capacity.
  • the plate body 40 is again provided with gas passages comprising cylindrical inlets 42 similar to the inlets 32 in FIG. 3, and slots 46 connect the outer ends of the inlets of respective rows 43 with each other and with the bottoms 47 of flame channels 48, as in the plate 14A of FIG. 3.
  • the cylindrical inlets 42 in this form are, however, not tapered to a reduced diameter for delivery into the slots. Instead, they have end portions or extensions 45 of the same diameter as their inlet portions, which end portions intersect and extend across the slots 46 to the outlet edges of the slots at the bottoms of the flame channels.
  • the cylindrical passages 42 extend for the full distance of, for example, 12 mm. from the backward plate surface 41 to the bottoms of the flame channels 48, and the slots 46 are cut through and across the outer ends of the cylindrical passages so as to interconnect and laterally enlarge those end portions and thus relieve the gas pressure and flow resistance that otherwise would develop in them in the high temperature zone contiguous to the outer or flame surface of the plate.
  • the body 50 of the plate is formed with parallel rows 33 of tubular inlets 32 having tapered outer ends 35 connected through slots 36 with the bottoms 37 of flame channels 38, as in the plate 14A of FIG. 3; but the flame channels of these rows of inlets coacting with slots and flame channels are spaced apart by intervening wall portions 52 of the plate material and these wall portions, although not wide enough to accommodate flame channels, are made sufficiently wide to accommodate rows 53 of cylindrical passages 54 extending through the entire thickness of the plate.
  • the passages 54 are formed with a diameter not greater than about 1.0 to 2.5 mm., depending upon the composition of the gas mixture to be burned; for example, they have desirably a diameter of about 0.9 mm.
  • FIG. 6 shows a plate construction 14D in which the body of the plate is formed with rows 43 of cylindrical passages 42 traversing and cut through by slots 46 which deliver into the bottoms of flame channels 48, as in the form of FIGS. 4 and 4A.
  • the flame channels of these rows are separated by walls 52 which accommodate rows 53 of cylindrical passages 54 extending through the entire thickness of the plate, as in the embodiment of FIG. 5.
  • This construction has a greater gas flow and radiating capacity than that of FIG. 5, by reason of the greater flow capacity of tlie slots 46 traversed by the outer end portions 45 of the cylindrical inlet passages 42.
  • FIGURE 6 is capable of being used for example, with an energy input of about 4,000 B.t.u. per hour per dm. supplied in a gas mixture entering the burner under a pressure holding a water column about 4 inches high in the cases of manufactured gas and natural gas, and 11 inches high in the cases of propane and butane, and containing about 130-135% of the amount of air required theoretically for complete combustion of the fuel content of the mixture, where the respective dimensions of the passages 42, slots 46, flame channels 48 and passages 54 are as follows: 0.9 mm., 0.46 mm., 1.35 mm. and 0.9 mm. in the case of manufactured gas; 1.25 mm., 0.8 mm., 1.35 mm. and 1.25 mm. in the case of propane; and 1.35 mm., 0.8 mm., 1.35 mm. and 1.35 mm. in the cases of natural gas and butane.
  • FIG. 7 shows at 14E another form of the plate construction, in which the body is formed with gas passages arranged substantially as in the construction of FIG. 5; but instead of having rows of inlets of circular cross section delivering into the flow-controlling slots 36, the inlets delivering into the slots are formed as tubular passages 72 of rectangular cross section. These passages are elongated in the direction of the respective slots, and they form rows 73 in which the individual passages 72 are separated by walls 74 of the thickness and strength required to keep the plate structure intact under service conditions.
  • the outer end portions of the passages 72 are tapered to reduced widths, as indicated at 75, where they deliver into the inlet edges of the slots 36. Since the slots are formed with a width limited so as to prevent back-firing, the inlet passages 72 may have a considerably greater width.
  • FIG. 8 and FIG. 9 show further forms of the new plate construction, in each of which all of the gas passages formed in the plate body comprise cylindrical inlets which extend from the inner surface to the outer or flame surface of the plate. Some of the rows of these passages have their outer end portions cut through by slots, similar to the slots 46 of FIG. 4, and deliver from the outer edges of the slots into flame channels recessed in the outer side of the plate.
  • the flame channels 48 are similar to those of FIGURE 4, each of them receiving the gas mixture from a single slot 46 interconnecting and cutting through the end portions of the cylindrical passages 42 of a single row 43.
  • the narrower flame channels in this construction are separated by outer wall portions 89 of the body 90, to the face of each of which the gas mixture is delivered from two rows of cylindrical passages 54 traversing the entire thickness of the plate as in the construction of FIG. 8.
  • the greater passage freedom provided by the burner plates of the present invention enables burners provided with these plates to be operated at high radiating efliciencies with gas mixtures containing all the air required for the completely hygenic combustion of the fuel gas contained in the mixtures.
  • the fuel injector used as at 21 in FIG. 2 of the drawings, should be one which will spread the jet of fuel gas without reducing its speed so that the gas will entrain and deliver into the burner the desired very large proportion of air without thereby reducing the pressure maintained inside the burner for the flow of the resulting mixture through the perforated plate structure.
  • the outer passage 106 diverges to a width greater than its length, having, for example, a cone angle of 80, and interconnects with an outer convergent conical surface 108 having a similar cone angle.
  • the cylindrical neck 104 is made with a length such that the cone angles of the passages 102 and 104 nearly meet at their apices but do not overlap within the neck. The flow from the divergent passage entrains the required amount of air as it enters the wide mouth of the mixer tube 22 disposed near the end of the injector.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the plate for distribution of said mixture and slots narrower than said inlets and formed inward from the outer side of said plate and each interconnecting the outer ends of a plurality of said inlets so as to afford passage freedom for said mixture yet prevent back-firing through the plate, each of said slots being sufiiciently narrow to keep said mixture flowing through it at a velocity confining the flame thereof to said outer side.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufliciently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the plate for distribution of said mixture and slots narrower than said inlets and formed inward from the outer side of said plate and each interconnecting the outer ends of a plurality of said inlets, said slots each being of a width efiective when said streams are burning to confine the fiames to the outer side of the plate and yet to afford passage freedom for said mixture in the passage zone of its greatest viscosity increase.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the plate for distribution of said mixture and slots narrower than said inlets and formed inward from the outer side of said plate and each interconnecting the outer ends of a plurality of said inlets so as to afford passage freedom for said mixture yet prevent back-firing through the plate, said slots each being of not more than 0.5 to 1.6 mm. in width, depending upon the composition of the gas mixture, and being sufficiently narrow to keep said mixture flowing through the slot at a velocity confining the flame thereof to said outer side.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising rows of tubular ducts extending into the plate for distribution of said mixture and slots narrower than said ducts and formed inward from the outer side of said plate and each interconnecting the ducts of one of said rows so as to afford passage freedom for said mixture yet prevent backfiring through the plate, said slots intersecting and being traversed to their outlet edges by end portions of said ducts not larger than 1.0 to 2.5 mm. in Width, depending upon the composition of the gas mixture, each of said slots being sufliciently narrow to keep said mixture flowing through it at a velocity confining the flame thereof to said outer side.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat-insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising rows of tubular ducts extending from said inner surface into the body of the plate for distribution of said mixture and slots narrower than said ducts and formed inward from the outer side of said plate and each interconnecting the outer ends of the ducts of one of said rows so as to atford passage freedom for said mixture yet prevent backfiring through the plate, said ducts being mutually surrounded and spaced apart in said body by interconnected walls of said material giving the plate the required mechanical strength, each of said slots being sufficiently narrow to keep said mixture flowing through it at a velocity confining the flame thereof to said outer side.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the plate for distribution of said mixture and slots narrower than said inlets and formed inward from the outer side of said plate and each intersecting outer end portions of a plurality of said inlets so as to afford passage freedom for said mixture yet prevent backfiring through the plate, said slots each being of not more than 0.5 to 1.6 mm.
  • said outer surface comprising flame channels wider than and substantially coextensive in length with said slots, each recessed in said outer side to the outlet edge of at least one of said slots, for the expansion and ignition within said channels of the streams entering them from said slots, said slots inter secting and being traversed by rows of end portions of said inlets the diameter of which exceeds the width of said slots but does not exceed 1.0 mm. to 2.5 mm., depending upon the composition of the gas mixture.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multiude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising rows of individual cylindrical ducts extending from said inner surface into the body of said plate for distribution of said mixture and slots narrower than said ducts and formed inward from the outer side of said plate and each interconnecting the outer ends of the ducts of one of said rows so as to afford passage freedom for said mixture yet prevent backfiring through the plate, said slots each being of not more than 0.5 to 1.6 mm.
  • said outer surface comprising flame channels wider than and substantially coextensive in length with said slots and each recessed in said outer side to the outlet edge of at least one of said slots, for the expansion and ignition within said channels of the streams entering them from said slots, each of said slots intersecting and being traversed to its outlet edge by end portions of the ducts connected with it, said end portions being not larger than 1.0 to 2.5 mm. in diameter, depending upon the composition of the gas mixture, said ducts being mutually surrounded and spaced apart in said body by interconnected walls of said material giving the plate the required mechanical strength.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the body of said plate for distribution of said mixture and slots narrower than said inlets and formed inward from the outer side of said plate and each interconnecting the outer ends of a plurality of said inlets so as to afford passage freedom for said mixture yet prevent backfiring through the plate, said slots each being of not more than 0.5 to 1.6 mm.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufliciently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture While its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the plate for distribution of said mixture and slots narrower than said inlets and formed inward from the outer side of said plate and each interconnecting the outer ends of a plurality of said inlets so as to afford passage freedom for said mixture yet prevent backfiring through the plate, said slots each being of 0.6 to 1.3 mm.
  • said outer surface comprising flame channels wider than and substantially coextensive in length with said slots, each recessed in said outer side to the outlet edge of at least one of said slots, for the expansion and ignition within said channels of the streams entering them from said slots; said passages also comprising rows of individual cylindrical ducts not larger than 1.0 to 2.5 mm. in diameter, depending upon said composition, extending through the entire thickness of said plate in portions thereof lying between said channels.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the plate for distribution of said mixture and slots narrower than said inlet and formed inward from the outer side of said plate and each interconnecting the outer ends of a plurality of said inlets so as to afford passage freedom for said mixture yet prevent backfiring through the plate, said slots each being of 0.6 to 1.3 mm.
  • a radiant gas burner comprising a plate of heatinsulating refractory material formed with a multitude of passages extending transversely through it for conducting from its inner side streams of a combustible gas mixture to be burned at its outer side, said plate being sufficiently thick and heat insulating that its inner surface remains below a temperature that would ignite said mixture while its outer surface is kept incandescent by the burning of said streams, said passages comprising inlets extending from said inner surface into the plate for distribution of said mixture and slots narrower than said inlets and formed inward from the outer side of said plate and each interconnecting the outer ends of .a plurality of said inlets so as to afford passage freedom for said mixture yet prevent backfiring through the plate, said slots each being of 0.6 to 1.3 mm.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Combustion Of Fluid Fuel (AREA)
US109224A 1960-09-27 1961-05-10 Radiant gas burners Expired - Lifetime US3258058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR839813A FR1283179A (fr) 1960-09-27 1960-09-27 Plaques rayonnantes pour brûleurs

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US3258058A true US3258058A (en) 1966-06-28

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AT (1) AT241756B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE608280A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH381833A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1404585A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DK (1) DK108266C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES270753A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1283179A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB916831A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683058A (en) * 1969-08-25 1972-08-08 Maurice Partiot Infrared burners and high efficiency radiant plates
US4437833A (en) 1981-03-05 1984-03-20 Red-Ray Manufacturing Company, Inc. Infrared radiating burner article
US5236327A (en) * 1990-11-16 1993-08-17 American Gas Association Low NOx burner
WO1994011675A1 (en) * 1992-11-12 1994-05-26 British Gas Plc Fuel fired burners
US5326257A (en) * 1992-10-21 1994-07-05 Maxon Corporation Gas-fired radiant burner
US5525056A (en) * 1992-08-18 1996-06-11 British Gas Plc Fuel fired burners
US5685708A (en) * 1994-06-16 1997-11-11 British Gas Plc Fuel fired burners
US6349714B1 (en) 2000-03-09 2002-02-26 Gas Research Institute Cooking range and control assembly and burner therefor
US20110232628A1 (en) * 2008-12-12 2011-09-29 Sabaf S.P.A. Gas burner for domestic cookers
US20120178034A1 (en) * 2011-01-12 2012-07-12 Lynx Grills, Inc. Barbeque radiant burner
US20130280662A1 (en) * 2010-11-16 2013-10-24 Ulrich Dreizler Combustion method with cool flame base
US20150128926A1 (en) * 2013-11-14 2015-05-14 Lennox Industries Inc. Multi-burner head assembly
US20160258619A1 (en) * 2015-03-03 2016-09-08 Willie H. Best Multiple plenum gas burner
WO2018197070A1 (de) * 2017-04-28 2018-11-01 Voith Patent Gmbh Infrarot-strahler sowie verfahren zur montage eines solchen
EP2310743B1 (en) 2008-07-08 2020-01-15 Solaronics S.A. Radiant burner
US11047572B2 (en) * 2013-09-23 2021-06-29 Clearsign Technologies Corporation Porous flame holder for low NOx combustion

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492986A (en) * 1966-04-18 1970-02-03 Maurice Partiot Directional beamed radiant heaters
US3510239A (en) * 1966-04-18 1970-05-05 Maurice Partiot Directional radiant heaters
FR2232735B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-05-08 1976-08-06 Antargaz
FR2587787B1 (fr) * 1985-09-26 1989-08-04 Vaneecke Solaronics Bruleurs radiants a cadre ceramique
DE4110301A1 (de) * 1991-03-28 1992-10-01 Kurt Krieger Brennerplatte fuer strahlungsbrenner
JP2664010B2 (ja) * 1992-12-14 1997-10-15 リンナイ株式会社 燃焼プレート
DE10028670A1 (de) * 2000-06-09 2001-12-13 Ruhrgas Ag Brennerplatte für einen Flächenbrenner
PL3646762T3 (pl) * 2018-11-01 2022-01-03 Potis Gmbh & Co. Kg Gazowe urządzenie do grillowania z rożnem obrotowym

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US1313196A (en) * 1919-08-12 lucre
DE485086C (de) * 1929-10-26 Alfred Collin Steinstrahlbrenner mit aus mehreren Einzelsteinen bestehendem Strahlstein
US2742437A (en) * 1949-05-24 1956-04-17 Oxy Catalyst Inc Catalytic structure and composition
US2775294A (en) * 1950-03-11 1956-12-25 American Infra Red Radiant Co Radiation burners
US3179155A (en) * 1960-06-17 1965-04-20 Partiot Maurice Deep combustion radiant surfaces with special slotting

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Publication number Priority date Publication date Assignee Title
BE558007A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) *
US1313196A (en) * 1919-08-12 lucre
DE485086C (de) * 1929-10-26 Alfred Collin Steinstrahlbrenner mit aus mehreren Einzelsteinen bestehendem Strahlstein
US2742437A (en) * 1949-05-24 1956-04-17 Oxy Catalyst Inc Catalytic structure and composition
US2775294A (en) * 1950-03-11 1956-12-25 American Infra Red Radiant Co Radiation burners
US3179155A (en) * 1960-06-17 1965-04-20 Partiot Maurice Deep combustion radiant surfaces with special slotting

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683058A (en) * 1969-08-25 1972-08-08 Maurice Partiot Infrared burners and high efficiency radiant plates
US4437833A (en) 1981-03-05 1984-03-20 Red-Ray Manufacturing Company, Inc. Infrared radiating burner article
US5236327A (en) * 1990-11-16 1993-08-17 American Gas Association Low NOx burner
US5460513A (en) * 1990-11-16 1995-10-24 American Gas Association Low NOx burner
US5525056A (en) * 1992-08-18 1996-06-11 British Gas Plc Fuel fired burners
US5326257A (en) * 1992-10-21 1994-07-05 Maxon Corporation Gas-fired radiant burner
WO1994011675A1 (en) * 1992-11-12 1994-05-26 British Gas Plc Fuel fired burners
AU672456B2 (en) * 1992-11-12 1996-10-03 Bg Plc Fuel fired burners
US5685708A (en) * 1994-06-16 1997-11-11 British Gas Plc Fuel fired burners
US6349714B1 (en) 2000-03-09 2002-02-26 Gas Research Institute Cooking range and control assembly and burner therefor
EP2310743B2 (en) † 2008-07-08 2025-08-13 Solaronics S.A. Radiant burner
EP2310743B1 (en) 2008-07-08 2020-01-15 Solaronics S.A. Radiant burner
US20110232628A1 (en) * 2008-12-12 2011-09-29 Sabaf S.P.A. Gas burner for domestic cookers
US9194578B2 (en) * 2008-12-12 2015-11-24 Sabaf S.P.A Gas burner for domestic cookers
US20130280662A1 (en) * 2010-11-16 2013-10-24 Ulrich Dreizler Combustion method with cool flame base
US9360210B2 (en) * 2010-11-16 2016-06-07 Ulrich Dreizler Combustion method with cool flame base
US9066620B2 (en) * 2011-01-12 2015-06-30 Lynx Grills, Inc. Barbeque radiant burner
US9970656B2 (en) 2011-01-12 2018-05-15 Lynx Grills, Inc. Barbeque radiant burner
US20120178034A1 (en) * 2011-01-12 2012-07-12 Lynx Grills, Inc. Barbeque radiant burner
US11047572B2 (en) * 2013-09-23 2021-06-29 Clearsign Technologies Corporation Porous flame holder for low NOx combustion
US10480823B2 (en) * 2013-11-14 2019-11-19 Lennox Industries Inc. Multi-burner head assembly
US20150128926A1 (en) * 2013-11-14 2015-05-14 Lennox Industries Inc. Multi-burner head assembly
US20160258619A1 (en) * 2015-03-03 2016-09-08 Willie H. Best Multiple plenum gas burner
WO2018197070A1 (de) * 2017-04-28 2018-11-01 Voith Patent Gmbh Infrarot-strahler sowie verfahren zur montage eines solchen
US11359809B2 (en) 2017-04-28 2022-06-14 Voith Patent Gmbh Infrared radiator and method of assembling same

Also Published As

Publication number Publication date
BE608280A (fr) 1962-01-15
MC325A1 (fr) 1962-05-21
CH381833A (fr) 1964-09-15
AT241756B (de) 1965-08-10
FR1283179A (fr) 1962-02-02
SE219976C1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1968-04-09
DE1404585A1 (de) 1969-07-03
DK108266C (da) 1967-10-30
ES270753A1 (es) 1961-12-16
GB916831A (en) 1963-01-30

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