EP1566592A1 - Verbesserungen an atmosphärischen Gasbrennern - Google Patents

Verbesserungen an atmosphärischen Gasbrennern Download PDF

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Publication number
EP1566592A1
EP1566592A1 EP05290365A EP05290365A EP1566592A1 EP 1566592 A1 EP1566592 A1 EP 1566592A1 EP 05290365 A EP05290365 A EP 05290365A EP 05290365 A EP05290365 A EP 05290365A EP 1566592 A1 EP1566592 A1 EP 1566592A1
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EP
European Patent Office
Prior art keywords
burner
support
block
support frame
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05290365A
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English (en)
French (fr)
Inventor
Albert Quere
Didier Boishardy
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Chaffoteaux et Maury SAS
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Chaffoteaux et Maury SAS
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Filing date
Publication date
Application filed by Chaffoteaux et Maury SAS filed Critical Chaffoteaux et Maury SAS
Publication of EP1566592A1 publication Critical patent/EP1566592A1/de
Withdrawn legal-status Critical Current

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    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement

Definitions

  • the invention relates, in general, to the gas burners of the "atmospheric" type, or atmospheric combustion, that is to say which remove the air oxidizing directly in the ambient atmosphere.
  • the invention relates more particularly to improvements made to a gas burner of the type mentioned above, intended to be installed in a water heating such as a gas boiler, or a water heater or gas bath heater.
  • the so-called atmospheric gas burners equipping wall mounted gas boilers or water heaters / bath heaters gas, are generally constituted, as shown on the FIG. 1, of a burner block 1 comprising a set of a number of unit elements, called burner nozzles 2, each having a gas mixture passage duct fuel and combustion air sucked into the atmosphere ambient, and which leads into a combustion ramp 3 elongated at the top edge of the burner spout 2 considered, the burner nozzles 2 of the assembly being substantially parallel, arranged side by side, and assembled to each other, so as to be maintained between them, possibly at equal distances (the pitch of nozzles 2), using support pieces such as 4, 5 and 6 in the figure 1, which are generally sheet metal and made using cutting and shaping tools for folding and stamping, as well as with connecting elements, such as screws and tie rods to get a burner block 1 realized in the form of a rigid mechanical assembly and robust.
  • a burner block 1 comprising a set of a number of unit elements, called burner nozzles 2, each having a gas
  • a gas nurse 7 which is for example bolted on one, 6, parts sheet metal support, of parallelepipedic general shape, which keeps spaced the input venturis 8 of the ducts of passage of the combustible gas / combustion air mixture delineated each respectively in one of the burner nozzles 2, this nanny 7 being equipped with a ramp 9 gas supply and injectors (not visible in FIG. 1), in number equal to the number of burner burners 2, each of which injects gas into the inlet venturi 8 of the duct of a corresponding burner nozzle 2, to constitute a burner gas, able to be mounted in the combustion chamber of a gas boiler, or a water heater / gas bath heater.
  • the number of burner nozzles 2 assembled in the burner block 1 varies according to the type of heater burner block is intended, and this number is depending on the required power rating. In the most common applications known to date, the number of Burner nozzle 2 can vary between 6 and 20 approximately.
  • the no burner nozzles 2, that is the distance between them, can also be variable from a gas burner to the other, depending on the performance of the burner nozzles consecutive, and the heater in which the block burner is installed.
  • the pitch of the burner nozzles 2 can vary between 16mm and 22mm and, although this technical measure is little used, the pitch can also vary on the same burner, to optimize the combustion performance of a heating device, for example to balance flows thermal, taking into account geometrical asymmetries of air supply or the evacuation of products from combustion.
  • a burner atmospheric combustion gas of the "ramp” type or “Burner nozzle” which includes a modular assembly having a series of burner nozzles assembled together against others, and in number adjusted to the needs, the gas burner further comprising a system of integrated cooling, which uses water from the circuit of heating, to prevent overheating of the head of the burner, this cooling system comprising a U-shaped duct, both sides of which are tubes extend substantially perpendicularly across all the burner tips and are fixed, by welding or by mechanical interference at the edge of tube in the burners.
  • the patent Aforementioned Italian even proposes that the lines of contact between the adjacent burner tips are sealed for avoid the passage of secondary air towards the flames.
  • the U-tube that passes through the burner tips according to the aforementioned French patent is solely for the purpose of to convey a coolant, in this case water from heating circuit, to cool the burner heads and avoid overheating.
  • a coolant in this case water from heating circuit
  • a gas burner of the aforementioned type the structure of which comprises a small number of parts, allows, by design, a higher degree of automation for assembly, and / or greater modularity, and / or more standardization easy, which leads to a more economical realization of a such a gas burner.
  • the improvements made by the invention relate, on the one hand, to the structure and method of assembling the burner tips to form the burner block, and, on the other hand, on the structure and the method of assembling and producing a burner block and a burner module from the aforementioned burner block, mounted on a support also receiving less a gas nurse and additional devices for the ignition and burner control, thus, possibly, that at least one gas supply valve, so this module burner serve as a basic element for the construction of gas burners mounted in water heaters of the type gas boiler and water heater or gas bath heater.
  • a gas burner of the "atmospheric" type for equipment including a water heater or bath heater or a gas boiler, and including a burner block having a set of burner nozzles presenting each a fuel gas and air mixture passage duct oxidizer that leads into an elongated combustion ramp at the top edge of the burner spout, the spouts of burner of the set being substantially parallel assembled to each other and supported by at least two rigid, elongated and straight support elements, substantially perpendicular to the burner nozzles and crossing each of the orifices arranged opposite in all the burner tips, which are attached to said elements of support at said ports, being spaced between them at least one predetermined step, and which is characterized what said elongated elements of support and assembly Burner burner burners also provide the support of the burner block on a support of the boiler or bath heater or water heater.
  • said elongated elements provide support for the burner block on said support based on the latter, which is preferably wide standard, by the external lateral surfaces of elongated elements, the length of which preferably depends on the number of burner tips of the burner block.
  • At least two simple support elements rigid, elongated and rectilinear, such as stems or bars, a priori of indefinite length but appropriate to receive any desired number of burner nozzles, are used to assemble and support the burner block constituted by these burner nozzles, the number and dimensions of which can be adapted to obtain any power from desired heating at the burner block.
  • These at least two same elongated support members are also used for assembly, without special tools or screws rivet, a burner block thus produced on a support of boiler, which can be a standard support, that is to say usable whatever the power and the dimensions burner block.
  • At least one nozzle burner but preferably each of them, includes two flanks of sheet metal side by side and delimiting between them said duct and said ramp, and at least one passage opening of an elongated support member in said burner nozzle, but preferably each orifice in each spout, is delimited by a tubular foot arranged in a first side of said burner nozzle with a section transverse whose shape and dimensions are substantially adjusted to those of the cross-section of said elongated support member, and passing through a hole pierced in the second side of said burner nozzle with a cross section of the same shape but dimensions slightly higher than those in the cross-section said elongated support member, said tubular foot being slightly frustoconical and converging in the direction of fitting the elongated support member into the spout of burner, so that said burner nozzle is maintained in position on the supported elongate support members in the beaks.
  • At least one tubular foot of the first flank of minus one burner burner is formed by drilling a hole in the first flank and deforming said first flank around said hole, preferably by punching, in a sleeve slightly protruding frustoconical and converging on the side of said first flank which is turned towards said second side of said beak of burner.
  • the support elements elongated are tubes, preferably of section transversely circular or oblong, and at minus one burner burner, but preferably each of them, is locked in position on at least one tube, and preferably on each of them preferably cut to length, by radial expansion of said tube from the inside, which ensures a firm locking of the burner nozzles in position on the tubes, in order to guarantee the preservation of the position burner nozzles relative to each other, and therefore the step or steps between them.
  • the burner block is advantageously mounted by said elongated support members on a support frame, on which the support elements are advantageously by their external lateral surface and on which is positioned and secured at least one equipped gas nanny of gas injectors, each of which injects gas fuel in a venturi inlet duct of a spout respective burner, in a substantially coaxial direction to the axis of the venturi.
  • the support frame is advantageously a frame standard capable of supporting burner blocks having Burner nozzles whose dimensions and / or numbers are different from one burner block to another.
  • the support frame is advantageously and simultaneously a device mounting bracket auxiliaries, such as burner ignition devices and flame control, and possibly at least one gas supply valve and a mounting bracket the burner module consisting of the burner block and the frame stand, in a boiler, bath heater or water heater gas.
  • auxiliaries such as burner ignition devices and flame control, and possibly at least one gas supply valve and a mounting bracket the burner module consisting of the burner block and the frame stand, in a boiler, bath heater or water heater gas.
  • the support frame has a general shape in U between the two sides of which is mounted a first plurality of burner nozzles of a burner block, which can include a second plurality of burner tips mounted to the outside of both sides of the U-shaped support frame, and distributed, preferably in equal numbers, outside each of the two sides of the U-shaped support frame.
  • This embodiment makes it possible to manufacture a burner module comprising a number N 0 of burner nozzles in the basic version, and to increase, outwardly and in a balanced manner and on both sides of the U-shaped frame.
  • both sides of the U-shaped support frame each have at least two receiving notches of one respectively of the elements of elongated support, at least one of said support elements being lockable by clipping into the notches which the receive, and in which this element rests by its external lateral surface.
  • This structure allows the assembly of a burner module by a mounting method fast, with a reduced number of pieces, and that can be easily automated, especially if, in addition, both notches for receiving a first support member elongate are advantageously arranged in rotation bearing of said support member with said burner block relative to the support frame, and the two receiving notches of a second elongated support member are arranged to receiving said second support member after rotation of the block burner with the first support element and are at proximity of at least one stop for at least one effect clip spring cooperating with said second support member and said stop for locking said second element of support and burner block on the support frame.
  • these tubes are adapted to the circulation of a coolant of cooling of the burner block, and / or water to be heated by the boiler, the bath heater or the water heater, and that is thus pre-heated.
  • each burner spout of the burner block burner assembly belongs to one respectively of at least two sub sets of nozzles, each of which, preferably consisting of burner nozzles arranged alternately substantially regular with burner nozzles of at least another sub-set of nozzles, is supplied with gas fuel by a power control independent of the supply control of the other subassemblies beakers, so that the burner has a power of flexible heating by the control of the choice of the sub sets of nozzles fed with combustible gas.
  • the "splitting" of the burner in two or more sets of nozzles makes it possible to operate each of these subassemblies under optimal conditions. In that case, it seems possible to reach a minimum power of the order of 4 kW, with a modulation range of 1 to 6, in using the example mentioned above.
  • This reduction of power is advantageously sought for operation in heating mode of appliances such as boilers, hot water heaters or water heaters, in order to better adapt their thermal generator to real heating needs of dwellings, particularly in midseason.
  • the burner block has two subassemblies of burner nozzles such as beaks of each of the two subassemblies are arranged in alternation with the burner nozzles of the other subassembly on the same elongated support elements, and the spouts of each of the two subassemblies have their conduit of passage which opens, by their venturi of entry, and to be fed gas-air mixture, on one respectively of two opposite sides of the burner block that extend substantially parallel to the elongate support members.
  • each spout has two orifices of the same diameter, substantially equal to support elements, and arranged symmetrically with respect to to a median vertical axis of the spout to allow rotation of 180 ° around this axis of the beaks of a subset by compared to the nozzles of the other subassembly, during assembly of the burner block, each burner block nozzle having, at the level of one of the orifices, a tubular foot coming from a first the two sides of this beak, and passing through a hole in the second sidewall of said spout, while at the level of the other opening, said spout has a hole in the first of the two sides of sheet metal of this beak and crossed by a tubular foot from the second side sheet of this beak.
  • the conduit of passage of each burner burner of each of the two sub sets opens next to one respectively gas injectors of one respectively two nurses of gas, extending substantially parallel to one the other and the elongated support elements, each substantially along one respectively on both sides opposite of the burner block, towards which the burner nozzle passageways, and supported and positioned by the same support frame.
  • the burner tips of the two subassemblies open all through their conduit passing on the same side of the block burner, and are fed by two nannies, parallel and side by side or even integrated in the same tube feeding, each nanny, possibly defined by one respectively of two gas pipes in the same tube, alternately feeding injectors next to burner nozzles belonging alternately to the two sub burner block nozzle assemblies.
  • the burner gas supply is advantageously provided by a valve block, having a input intended to be connected to a distribution network gas, and two separate and independent outputs, each connected to one respectively of the two nannies of gas, the valve block comprising a first valve of safety, preferably with modulation of gas flow, arranged at the entrance of the valve block, and two second valves security, operating in all or nothing, arranged downstream of the first valve, and each supplying one respectively of the two outputs of the valve block.
  • a burner assembly a burner module, preferably complete, is pre-assembled before being integrated on a heater, by attaching the support frame of this module in the device such as a boiler.
  • the device such as a boiler.
  • burner block 11 of the invention which is shown in Figure 5, includes, as the burner block 1 of the state of the art according to FIG. identical unitary elements, called burner nozzles 12 (in this case 14 nozzles 12 in FIG. 5), maintained assembled side by side and substantially parallel, and separate each other with a spacing step which in this example, is constant, and each beak 12 is such that shown in Figures 2 and 3.
  • burner nozzles 12 in this case 14 nozzles 12 in FIG. 5
  • Each spout 12 comprises a body consisting of two flanks 14 and 15, assembled by crimping one against each other with contiguous flat portions 14a and 15a, the flank 15 having edges 15b folded and folded around edges 14b of the sidewall 14, as shown in FIGS. and 3.
  • the two flanks 14 and 15 may be two pieces separate sheet metal, or two parts, folded one against the other, of the same piece of sheet metal.
  • Each flank 14 and 15 a its flat portions such as 14a and 15a, which extend substantially on either side of a curved portion 14c or 15c, delimiting one half of a duct, and so that, when both flanks 14 and 15 are joined one to the other, their curved and complementary portions 14c and 15c delimit between them a passage duct 16.
  • This led 16 is constituted, from the entrance into a side lateral beak 12 at its exit at the upper edge of the nozzle 12, of an inlet venturi 16a, of conventional shape in converge frustoconical, extended axially, beyond a collar of small axial dimension, of a frustoconical divergent 16b slightly divergent, itself prolonged by a divergent flattened and cranked 16c flaring along the length of the beak 12 and opening out in the upper face of the 12 by an elongated combustion ramp 13.
  • This the last is driven by a combustion head 17 (see Figures 4 and 5), of parallelepipedal general shape elongated with a transverse guiding grid and flame hanging.
  • Each beak 12 is crossed, in each of the two planar portions 14a and 15a of its flanks 14 and 15, by one respectively two orifices 18, substantially identical in this example, for the passage of support elements and may be rods or rigid bars rectilinear, but which are, in this example, tubes rigid cylindrical and rectilinear support and assembly described below.
  • Each orifice 18 is defined by a structure shown in Figure 3.
  • Each orifice 18 is obtained by drilling a circular hole 19 in one of the flanks, for example the flank 14, with a diameter slightly greater than the nominal diameter of the tube corresponding, and in the other side, for example the flank 15, by drilling a circular hole with deformation of the flank around the hole by punching, so as to form a tubular foot 20 in the shape of a small weakly frustoconical sleeve or "soy" hole, of diameter internally substantially adjusted to the outer diameter of the tube corresponding.
  • This tubular foot 20, formed protruding sidewall 15 on the flank side 14, passes through the hole 19 of flank 14 and converges slightly (angle at the top ⁇ of low value in FIG. 3) on the side of the flank 14.
  • orifices 18 resides in the passage of the tubular foot slightly frustoconical 20 of a flank, such as 15, in the hole 19 of the other side, such as 14, during the operation of crimping of the two sides 14 and 15, which has the advantage to guarantee the "internal" tightness of the beak 12, between its led 16 and the ambient atmosphere, by the contact of the edge of the hole 19 against the periphery of the tubular foot 20, this last being obtained after the folding of the two flanks 14 and 15.
  • two cylindrical tubes 21 of circular steel section are fitted, substantially perpendicularly to the beaks 12, each in one respectively of the two orifices 18 of each spout 12 of together, and in the direction of the convergence of the feet tubular 20, as shown in FIG. obtain the burner block 11 of Figure 5, on which each tube 21 cut to length passes through all the orifices 18 in look at each other, in the vicinity of one of the faces front and rear of the burner block 11.
  • a firm blocking or locking each spout 12 in axial position on the 21 is obtained by radial expansion of at least one tube 21, and preferably two tubes 21.
  • This expansion radial can be provided by temporary admission into the tube 21 of a hydraulic fluid under high pressure, which inflates the tubes 21 and deforms them radially and plastically to the outside by applying them against the inner face of the tubular legs 20, which inner face constitutes the bearing surface on the external lateral surface tubes 21 for maintaining the position of the nozzles 12.
  • this radial expansion of the tubes 21 can be provided mechanically, by means introduced in the tubes 21 and provoking their plastic deformation radially outward, in a manner similar to that obtained by the known technique of dudonnage.
  • a burner module is produced by mounting the burner block 11 on a support, which can be standard, adapted for receive also, at least one gas nurse and components, such as electrodes, devices auxiliaries, in particular for igniting the burner and flames control, and possibly one or more gas supply valves, which may be associated or integrated into the nanny or nurse to feed in gas all or part of the set of burner block burners to modulate the heating power, so that the module burner serve as a basic element for the construction of burner sets mounted in devices such as gas boiler, water heater or gas bath heater.
  • a support which can be standard, adapted for receive also, at least one gas nurse and components, such as electrodes, devices auxiliaries, in particular for igniting the burner and flames control, and possibly one or more gas supply valves, which may be associated or integrated into the nanny or nurse to feed in gas all or part of the set of burner block burners to modulate the heating power, so that the module burner serve as a basic element for the construction of burner sets mounted in devices such as gas boiler
  • the support on which is mounted the burner block 11 of FIG. 5 is a support frame having the general shape of a flat lying U 22, each of which arms or sides 23 of the U at its free end 24 folded substantially at right angles to the outside of the U, and whose base 25 supports a gas nurse 26, with a ramp common gas supply 27 and a number of injectors 28 which is equal to the number of burner nozzles 12 of the block burner 11, when all the burner nozzles 12 are intended to operate simultaneously.
  • each injector 28 of gas is protruding from the side of the nanny 26 that is directed towards the burner nozzles 12 and is oriented in view of the inlet venturi 16a of the burner nozzle 12 corresponding and along the axis of this venturi 16a, so as to thus supply fuel gas conduit 16 of this nozzle of burner 12, in a direction substantially coaxial with the axis of the venturi 16a, this fuel gas injection causing the aspiration of ambient combustion air, so a mixture of combustible gas and combustion air flows through the duct 16 to debouch in the ramp 13 and head 17 corresponding combustion.
  • the gas nurse 26 is fixed in a conventional manner, by screwing and / or bolting, on the base 25 of the support frame 22 so as to ensure its positioning relative to the burner nozzles 12, and particular coaxiality, as described above, jets of gas injectors 28 relative to the axes of the venturi 16a beaks 12.
  • the burner block 11 is mounted on the support frame 22 so that both tubes 21 rest, by their external lateral surface, and are retained on each of the two sides 23 of the support frame U 22, between two burner nozzles 12 adjacent between which each of the sides 23 extends.
  • the U-shaped support frame 22 is thus mounted by each of its two sides 23 between two burner nozzles 12 of one respectively of two pairs of adjacent burner nozzles 12, within the burner block 11.
  • a burner module is thus produced which includes a first group of burner nozzles 12 extending between the two sides 23 of the support frame 22, and a second group of burner nozzles 12 arranged outside the two sides 23, this second group splitting in two subgroups, preferably balanced, ie having the same number of burner nozzles 12.
  • the first group comprises 8 beaks 12 between the sides 23, and that the second group includes two subgroups of 3 nozzles 12 each, each subgroup being on the outside of one of the sides 23 of the support frame 22.
  • this embodiment makes it possible to obtain a burner module comprising N 0 burner nozzles 12 in the basic version, this number N 0 corresponding to the number of nozzles 12 of the first group (between the two sides 23 of the frame support 22), whereas for a version with higher nominal power, the increase in the number of nozzles 12, to obtain the total number N of nozzles 12, is outside the sides 23, preferably in a balanced manner, by adapting the number of nozzles 12 of each of the subgroups of nozzles 12 to the outside of one of the sides 23.
  • the U-frame 22 is a standard support that can be used, in principle, regardless of the number of burner burner burner nozzles .
  • the frame U-shaped support 22 is arranged so that each of its two sides 23 has, in its upper edge 29 (see figure 7), a first notch 30 substantially in the shape of a semicircle of diameter corresponding to the outer diameter of that of the two tubes 21 which is closer to the base 25 of U-shaped support frame 22.
  • This first notch 30 is provided towards this base 25 and in a substantially vertical flange of the upper edge 29, in which a second notch 31 is arranged towards the end 24 of the farthest side 23 of the base 25 of the support frame U 22.
  • This second notch 31 also has substantially the shape of a half circle of diameter corresponding to the outer diameter of that of the two tubes 21 which is farthest from the base 25 of the frame 22, this second notch 31 opening towards the top and towards the end 24 of the corresponding side 23.
  • the first notch 30 is arranged substantially level of support and rotation of the tube 21 closest to the base 25, while the second notch 31 receives and supports the other tube 21 when the burner block 11 in its set is pivoted down, after tube 21 engagement neighbor of the base 25 in the first notch 30 of the two sides 23 and then by whole rotation of the burner block 11 by this tube 21 in the first notches 30, until the support of the other tube 21 in the second notches 31 of the two 23.
  • the entire burner block 11 is then immobilized in position on the support frame 22 by clips 32, for example two spring clips, which immobilize the tube 21 furthest from the base 25 of the support frame 22 in the second notches 31 of the arms 23. As shown schematically in FIG.
  • each 32 locking clip can be realized in the form of a torsion spring wrapped around a portion of the tube 21 corresponding, and an end tab 33 is brought by elastic deformation, under a stop 34 of restraint arranged in the extension of one of the edges of the corresponding second notch 31, in the upper edge 23 on the corresponding side, on the one hand, and on the other on the other hand, is retained by the end 35 of the tab 33 in a slot and under a second stop 36 cut in the edge upper 29 on this side 23, at its near end of the folded end 24 of this edge 23, as shown on FIG. 8.
  • the tube 21 'closest to the end of the side 23 'corresponding maybe snapped elastically into a spring clip 32 'configured in a slightly closed U-shape, mounted and retained in the notch 31 'in the upper edge 29 'on the side 23', and so that its curved branches can deviate elastically to the passage of the tube 21 'then to close one towards the other, being limited by stops formed by the edges of the notch 31 ', according to a well known arrangement.
  • burner block 11 on the one hand, and support frame 22, on the other on the other hand, allow for a quick assembly-disassembly process the burner assembly, with a reduced number of parts, by compared to current achievements.
  • process assembly of a burner assembly two variants are possible. According to a first variant, the burner module as described above and as shown in FIG. 6, before integrating it on the device of heater.
  • the second variant is to premount on the heater, a boiler for example, the frame support 22 fully equipped except the burner block 11, then, in a second step, to set up and lock the burner block 11 on the support frame 22 after have carried out a leak test of the entire gas supply line, since the shut-off valve at the boiler inlet, up to injectors 28 of the gas nurse 26 supported by the support frame 22.
  • the tubes 21 can be used to circulate to through them the water to be heated by the boiler, and that is preheated, cooling the burner block and avoiding overheating of the combustion ramps.
  • the extension, towards lower power levels, from the range of power operation of the burner is ensured in subdividing the set of burner nozzles 12 of a block burner such as 11 of FIG. 5 in at least two subassemblies, each of which has its burner nozzles 12 powered by gas independent of the feeding of the beaks 12 of the others subassemblies.
  • the subset (s) nozzles fed with combustible gas it is possible to order a modulation of the heating power.
  • the burner block 11 of Figure 5 has its set of nozzles burner 12 subdivided into two subassemblies constituted each by beaks 12 taken alternately, from preferably substantially regular, with burner nozzles 12 of the other subassembly, and in a simple case each of the two subassemblies of nozzles 12 consists of a two, alternately, consecutive nozzles 12 of one end to the other of the burner block 11, in the direction of the tubes 21.
  • a first sub-set consists of 12A beaks, alternating with the beaks 12B of the other under together.
  • nanny 26 presents two gas supply ramps 27 extending parallel along the nanny 26 and each ramp 27 only feeds 1 of 2 injectors 28 alternately over the entire row of injector 28, as has already been proposed in the following patent documents of the State of the technique: GB 962 187, DE 196 05508 and EP 1 484 555, the structure of the nozzles such as 12A of a subassembly which can possibly, to be modified compared to that of the beaks such as 12B of the other subassembly, so that their venturis 16a are offset vertically from a subassembly to the other, to allow their gas supply by two nannies such as 26 parallel and side by side or two feeding ramps 27 each dedicated to one respectively of the two subassemblies of nozzles 12A and 12B and integrated in a single nanny 26.
  • burner block 11 'of FIG. 10 the basic structure of which is the same than that of the burner block 11 of FIG. burner nozzle assemblies are each constituted by beaks 12'A or 12'B alternate with the beaks of the other under together, and which are mounted, assembled and fixed on the two tubes 21 after rotation, during assembly, of 180 ° each of the nozzles 12'B with respect to each of the nozzles 12'A, or conversely, an angle of 180 ° around a vertical axis and median AA of the beak 12 'of Figure 11.
  • the nozzles 12'A and 12'B being mounted in alternating position from one subassembly to another, and a beak to the other, by pivoting during assembly, two zones gas injection are created along the two long sides of the burner block 11 ', since the input venturis 16a of all the beaks 12'A open on the right side in the figure 10, while the inlet venturi 16a of the beaks 12'B of the other sub-set all open on the left side of the burner block 11 ', including all burner nozzles 12'A and 12' B are identical to that 12 'of Figure 11.
  • the beak 12 'of the figure It presents some structural allowing to belong to one or the other of the two sub 12'A and 12'B nozzle assemblies by simple 180 ° rotation around its median vertical axis AA.
  • each beak 12 ' is symmetrical one each other in relation to the AA axis, and are therefore of the same diameter substantially corresponding to the external diameter of two tubes 21 on which the beak 12 'is intended to be engaged.
  • each beak 12 ' is of a structure similar to each spout 12 of FIGS.
  • each nozzle 12 ' is such at the level of one 18A of the two orifices, the foot tubular 20 defining this orifice 18A comes, as on each spout 12, of the sidewall 15 and passes through a hole formed in the other side of sheet metal 14, while at the level of the other orifice 18B, the tubular foot 20 comes from the sidewall of sheet 14 and passes through a hole in the other side of sheet 15, as can be seen in FIGS. 10 and 11.
  • the beaks 12 and 12 ' are similarly constituted.
  • a support frame such as the U-shaped frame 22 of Figures 6 and 7, is arranged, in particular so as to support two gas nurses such than 26, which can be powered simultaneously or separately, and each extends along one respectively long sides of the burner block 11 'to which respectively open the venturis 16a of the beaks 12'A or 12'B from each of the two subsets.
  • each of the two nurses thus mounted on two sides opposite of the burner block 11 ', may be similar to that of the nanny 26 of Figures 6 and 7, with, for only difference, that each of the two nurses does not supply gas that substantially half of the injectors 28, each in look at the venturi 16'a of one of the beaks 12'A or 12'B of the sub corresponding set.
  • each burner nozzle 12 'of each of the two sub 12'A and 12'B sets opens next to one respectively gas injectors 28 of one respectively the two gas nipples, each analogous to the nanny 26, and extending substantially parallel to each other and to the tubes 21, each substantially along one respectively the two opposite large sides of the burner block 12 'being supported and positioned by a support frame, such as 22.
  • a support frame such as 22.
  • the nominal power (Pn) of the burner is obtained by the simultaneous supply of the two gas nibs, and therefore the simultaneous operation of the nozzles 12 'of the two subsets, and the feed gas flow rate modulation of the two nannies can be performed on a range (Ps, Pn), where the lower bound of the range Ps is equal to Pn / 2 or Pn / 3.
  • Ps, Pn the range of the range Ps is equal to Pn / 2 or Pn / 3.
  • a gas supply valve block having a gas inlet connectable to a gas distribution network, and separate and independent outputs, each of which is connected respectively to one of the two nurses.
  • the valve block comprises a 1 st valve disposed at the inlet of the valve block, performing the function of safety valve 1 st, and preferably enabling the gas flow modulation with an actuator, which may be a stepping motor or a modulating electromagnet.
  • the block valve Downstream of this one valve era, the block valve also comprises two safety valves, each operating in all or nothing, each connected to one of two outlets connected respectively to the nurses, and constituting the 2nd safety valve of the circuit respective gas.
  • the burner assembly thus produced appears from a simplified and standardized design, and has a small number of parts that can be grouped together according to improved modularity.
  • the design of the whole burner, and in particular the burner block of the invention allows a higher degree of automation for assembly, with a substantial reduction in the costs of manufacture, assembly and disassembly, and therefore also a reduced maintenance and maintenance costs.

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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)
EP05290365A 2004-02-20 2005-02-17 Verbesserungen an atmosphärischen Gasbrennern Withdrawn EP1566592A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0401727A FR2866696B1 (fr) 2004-02-20 2004-02-20 Perfectionnements aux bruleurs a gaz de type atmospherique
FR0401727 2004-02-20

Publications (1)

Publication Number Publication Date
EP1566592A1 true EP1566592A1 (de) 2005-08-24

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EP05290365A Withdrawn EP1566592A1 (de) 2004-02-20 2005-02-17 Verbesserungen an atmosphärischen Gasbrennern

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EP (1) EP1566592A1 (de)
FR (1) FR2866696B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016090071A (ja) * 2014-10-30 2016-05-23 リンナイ株式会社 燃焼装置
CN105716080A (zh) * 2016-04-25 2016-06-29 广东祥基电器有限公司 一种燃气热水器的燃烧组件

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102080823B (zh) * 2009-12-01 2014-01-15 樱花卫厨（中国）股份有限公司 燃气热水器用燃烧器结构改良

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099312A (en) * 1958-07-07 1963-07-30 Ascot Gas Water Heaters Ltd Gaseous fuel burners
GB1089478A (en) * 1965-11-02 1967-11-01 Int Standard Electric Corp Sheet metal burner rack assembly for gas fired hot air furnaces
JPS55110813A (en) * 1979-02-17 1980-08-26 Atago Seisakusho:Kk High density burner
EP0534554A2 (de) * 1991-09-24 1993-03-31 Tokyo Gas Co., Ltd. Brenner mit geringer Erzeugung von Stickoxiden und kleine Verbrennungsvorrichtung
FR2684747A3 (en) * 1991-12-06 1993-06-11 Aldo Polidoro Gas burner of the type with spray pipes
EP0769656A1 (de) * 1995-10-19 1997-04-23 E.L.M. Leblanc Verbesserungen an Brennern für Wassererhitzer, Baderhitzer oder Gasheizkessel
DE19542649A1 (de) * 1995-11-15 1997-05-22 Bosch Gmbh Robert Atmosphärischer, wassergekühlter Gasbrenner
US5667375A (en) * 1993-08-16 1997-09-16 Sebastiani; Enrico Gas combustion apparatus and method for controlling the same
US20040033458A1 (en) * 2000-09-26 2004-02-19 Giorgio Buccilli Low noise modular blade burner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1184715B (it) 1984-07-05 1987-10-28 Polidoro Aldo Bruciatore gas con sola aria comburente primaria e numerosi ugelli

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099312A (en) * 1958-07-07 1963-07-30 Ascot Gas Water Heaters Ltd Gaseous fuel burners
GB1089478A (en) * 1965-11-02 1967-11-01 Int Standard Electric Corp Sheet metal burner rack assembly for gas fired hot air furnaces
JPS55110813A (en) * 1979-02-17 1980-08-26 Atago Seisakusho:Kk High density burner
EP0534554A2 (de) * 1991-09-24 1993-03-31 Tokyo Gas Co., Ltd. Brenner mit geringer Erzeugung von Stickoxiden und kleine Verbrennungsvorrichtung
FR2684747A3 (en) * 1991-12-06 1993-06-11 Aldo Polidoro Gas burner of the type with spray pipes
US5667375A (en) * 1993-08-16 1997-09-16 Sebastiani; Enrico Gas combustion apparatus and method for controlling the same
EP0769656A1 (de) * 1995-10-19 1997-04-23 E.L.M. Leblanc Verbesserungen an Brennern für Wassererhitzer, Baderhitzer oder Gasheizkessel
DE19542649A1 (de) * 1995-11-15 1997-05-22 Bosch Gmbh Robert Atmosphärischer, wassergekühlter Gasbrenner
US20040033458A1 (en) * 2000-09-26 2004-02-19 Giorgio Buccilli Low noise modular blade burner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0041, no. 61 (M - 040) 11 November 1980 (1980-11-11) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016090071A (ja) * 2014-10-30 2016-05-23 リンナイ株式会社 燃焼装置
CN105716080A (zh) * 2016-04-25 2016-06-29 广东祥基电器有限公司 一种燃气热水器的燃烧组件

Also Published As

Publication number Publication date
FR2866696A1 (fr) 2005-08-26
FR2866696B1 (fr) 2006-12-08

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