EP2870409B1 - Brûleur à système de combustion superficielle - Google Patents

Brûleur à système de combustion superficielle Download PDF

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Publication number
EP2870409B1
EP2870409B1 EP13728327.1A EP13728327A EP2870409B1 EP 2870409 B1 EP2870409 B1 EP 2870409B1 EP 13728327 A EP13728327 A EP 13728327A EP 2870409 B1 EP2870409 B1 EP 2870409B1
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EP
European Patent Office
Prior art keywords
housing
burner
flame
fabric membrane
burner according
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.)
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Application number
EP13728327.1A
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German (de)
English (en)
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EP2870409A2 (fr
Inventor
Daniel Dreizler
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Individual
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Individual
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Classifications

    • 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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00019—Outlet manufactured from knitted fibres

Definitions

  • the invention relates to a burner with a surface combustion, which has a fabric membrane on the burner side and comprises a flashback barrier upstream of a burner side.
  • Such a gas burner has a fabric membrane on an outlet side of the housing, which is designed as a gas-permeable metal fiber plate.
  • This metal fiber plate is porous and also includes through holes which are arranged at regular intervals from one another and form a hole pattern.
  • the metal fiber plate is assigned to a distribution component in the housing.
  • a fuel-air mixture is introduced into the housing via a supply line and flows through the distribution component, so that after flowing through the through holes in the metal fiber plate outlet side, a flame field is formed which has higher flames which are caused by a regular pattern of these through holes.
  • Such housings are, for example, square, as shown in the Figures 1 and 2 the EP 0 628 146 B1 is shown.
  • the metal fiber plate and the distribution component are placed on an end edge of the housing, in order to then put a clamping ring with a circumferential shoulder over it, this clamping ring being firmly connected to the housing with a welded connection.
  • Such burners have the disadvantage that if the fabric membrane and / or the distribution component is damaged, the entire burner must be replaced. In addition, an alignment of a hole pattern in the fabric membrane with a hole pattern in the distribution component cannot take place.
  • the result is an infrared radiation burner in which a combustion chamber is formed between two tissue membranes.
  • a fuel is fed to the combustion chamber and burns between the two tissue membranes. This heats the outer tissue membrane so that it emits heat radiation.
  • the fabric membranes are used in a two-part housing, the housing parts being connected by a circumferential flange on the outer circumference.
  • the DE 10 2009 028 624 A1 discloses an infrared radiation burner in which a plurality of passage channels are provided in a burner plate. These passage channels each have a cross-sectional expansion through which combustion channels are formed. The combustion takes place within these combustion channels, so that the burner plate is heated and emits heat radiation.
  • the radiation burner comprises a two-part box-shaped housing, a circumferential flange for connecting the housing parts being provided on the outer circumference.
  • the US 7 726 967 B2 relates to an infrared radiation burner in which a plurality of baffles and baffles are provided within a combustion chamber, the baffles and baffles having recesses so that the flames spread inside the combustion chamber and heat an outer burner plate, which emits the radiant heat.
  • the baffles and deflectors face bores in the edge area which correspond to bores in a flange running on the outer circumference of a housing.
  • the baffles and baffle plates are screwed to the housing through these holes.
  • an infrared radiation burner in which a wire shield is screwed to a flange running on the outer circumference of a housing.
  • a plurality of wire mesh burner plates are provided within the housing, through which a fuel gas flows and burns within a combustion chamber between the wire mesh burner plates and the wire shield. This heats up the wire shield and emits heat radiation.
  • an atmospheric gas burner for reducing NOx emissions is known. Gas is fed into the housing via a feed line into which the open end of a Venturi nozzle opens. This causes primary air to be drawn in from the atmosphere. The mixture flows through a perforated plate and arrives at an intermediate fuel plate. A metal mesh is provided at a distance from the intermediate fuel plate. In this space between the intermediate fuel plate and the tissue membrane, the flames are formed, causing the metal mesh to glow to generate infrared radiation.
  • a burner with a blower which feeds a fuel-air mixture to a perforated plate in a housing.
  • a layer of ceramic fibers is provided downstream on this perforated plate.
  • a further layer of ceramic fibers is provided, which is adjustable at a distance from the layer of ceramic fibers lying against the perforated plate. Flame formation occurs in the space between the layers of ceramic fibers.
  • the invention is based on the object of proposing a burner for surface combustion, in which cost-effective maintenance is made possible and an alignment of the two parts to one another is made possible when installing a fabric membrane and a flame non-return valve.
  • the housing of the burner can be tubular and comprise a receiving area with an inner peripheral surface, through which at least the fabric membrane and / or the flame non-return valve are guided radially or laterally.
  • an optimized flame matrix can be formed, for example, when the through holes of the flame non-return valve are aligned with the through holes of the fabric membrane.
  • a flame matrix consists of individual flames and a holding flame, the individual flames emerging from the holding flame.
  • the aligned arrangement enables good flow cooling of the fabric membrane and at the same time cooling of the flame root of the individual flames.
  • an increased surface load on the fabric membrane can be achieved, which means that there is an increase in performance compared to previous burner performance.
  • flame nests can be formed in this way.
  • “Flame nests” is understood to mean a group of individual flames within a flame matrix, which are not all aligned parallel to one another and extend at right angles to the surface of the fabric membrane into the burner chamber, but rather at least one central main flame is directed into the burner chamber as a single flame and several surrounding it Includes individual flames, which are inclined at a deflection angle to the main flame relative to the latter.
  • a detuning that is to say a reduction in resonances which occur, can thereby be achieved, as a result of which a reduction in noise during surface combustion is achieved.
  • an adaptation and adjustment of the fabric membrane to the flame flashback barrier or vice versa can thus be carried out directly on site for at least one particularly specific environmental condition.
  • a predetermined distance is preferably generated between the fabric membrane and the flame non-return valve so that a free flow space of the fuel-air mixture is created between the flame non-return valve and the fabric membrane.
  • This spacer element preferably has the same outer circumference as the fabric membrane and / or the flame non-return valve, so that these components can be inserted together and successively into the receiving area of the housing and are guided radially therein.
  • the spacer element can be designed, for example, as a heat-resistant ring, which preferably has axially aligned contact surfaces on both sides.
  • the at least one releasable connecting element is provided upstream of the flame non-return valve.
  • This arrangement has the advantage that the releasable connecting element is on the so-called “cold side”, that is to say that the flame flashback barrier is not on the burner side but rather is provided on the feed side.
  • the fuel-air mixture is supplied on the supply side and cooling is achieved by the flow, so that a long service life is achieved for the releasable connecting element.
  • the receiving area can be delimited downstream by an annular shoulder pointing towards the longitudinal center axis of the housing and upstream by the releasable connection. This makes it easy to insert the fabric membrane and then the flame arrester from behind into the burner housing.
  • the releasable connecting element can then be attached after inserting and aligning the fabric membrane and the flame non-return valve. This represents a structurally simple and inexpensive design of the burner head.
  • An alternative embodiment for forming the releasable connecting element can be the formation of a screw connection between a flame tube and a burner housing.
  • the fabric membrane and flame non-return valve are kept stretched between the burner housing and the flame tube in the receiving space of the burner housing.
  • An advantageous embodiment of the screw connection can provide that the burner housing and the flame tube are connected to one another by the screw connection, and preferably the flame tube has an external thread and the burner housing has an internal thread.
  • an end face of the burner housing can form a contact surface for the flame non-return valve and at least the fabric membrane and the flame non-return valve can be clamped in between by screwing the flame tube with the shoulder arranged on the burner housing.
  • the burner housing can be extended as desired by an extension as a spacer, preferably with an internal and external thread the extension between the burner housing and flame tube is positioned.
  • detachable connection is provided in that the fabric membrane and possibly also a spacer element are clamped in and a further detachable connection element is provided upstream of the screw connection, by means of which the flame flashback barrier is fixed.
  • This further releasable securing element can be designed as a securing ring or clamping ring, which is inserted into a circumferential groove in the burner housing.
  • Another alternative embodiment of the burner provides that the releasable connecting element can be arranged upstream and downstream of the receiving area. This arrangement enables the use of a tube as a housing, which enables an inexpensive design for larger flame tube diameters over 300 mm.
  • the housing can be formed in the tubular housing to form the receiving area upstream of the receiving space by a circumferential bead directed towards the central axis.
  • prefabricated pipes can be used as the housing, in which a bead is introduced in a simple manner by a rolling process in order to limit the receiving area upstream.
  • an inner clamping ring is preferably provided for fixing the flame-retardant barrier and the fabric membrane and the spacer element preferably arranged in between, which enables an exciting fastening in the tube without additional processing of the inner peripheral surface.
  • two nested pipe sections form the housing, the pipe sections are preferably firmly connected to one another, and an inner pipe section forms a shoulder.
  • the tubular housing, into which a bead can be introduced preferably consists of a drawn or welded tube.
  • a heat-resistant material in particular steel, stainless steel or cast iron, can preferably be used to produce the housing as a turned part.
  • Stainless steel is used for a so-called wet operation, whereas both steel and gray cast iron can be used for a dry operation.
  • the releasable connecting element can be designed as a locking ring which can be inserted into a circumferential groove in the inner peripheral surface of the receiving area on the housing.
  • Such circlips or circlips can be made of heat-resistant material and are easy to assemble and disassemble.
  • An alternative embodiment for a releasable connecting element is provided by an inner clamping ring, which is braced by radial widening with respect to the inner peripheral surface of the receiving area.
  • Such inner clamping rings or clamps allow a fixation without additional processing of the inner peripheral surface.
  • the housing with the shoulder pointing inwards is preferably designed as a turned part.
  • inexpensive manufacture of a one, two or more-part housing can be provided.
  • a further preferred embodiment of the burner provides that at least one ignition electrode and at least one monitoring electrode are attached to an outer side of the housing, the electrode tips of which extend downstream into the tissue membrane extend flame matrix or adjacent to it. Ignition and monitoring from the outside is provided, in particular in the case of smaller burner housings.
  • the at least one ignition electrode and / or at least one monitoring electrode which are preferably received by a common electrode holder, can be fastened in a through opening in the tissue membrane.
  • an internal positioning of the at least one ignition electrode and / or monitoring electrode can be provided.
  • the burner according to the features described above is preferably used as a flat burner, that is to say that the surface combustion takes place adjacent to a combustion chamber without the burner itself projecting significantly into the combustion chamber.
  • a burner 11 with a burner head 12 is shown schematically.
  • This first embodiment comprises a housing 14, in which a fabric membrane 16 ( Figure 3 ) and at a distance from the fabric membrane 16 a flame flashback 17 ( Figure 3 ) is arranged.
  • a fuel-air mixture is fed from a fuel line 21 to the burner head 12 via a feed 18, which opens into the housing 14. This feeds a certain amount of fuel to a blower 19 with a fan wheel via a solenoid valve 22.
  • air is supplied via an air supply line 23.
  • the fuel-air mixture generated by the blower 19 is fed to the burner head 12 via the feed 18, so that the burner head 12 and the flame arrester 17 between the Flame flashback 17 and the flow membrane 26 formed through the fabric membrane 16 flows through and forms a flame matrix 27 on the burner side after emerging from the fabric membrane 16.
  • This flame matrix 27 comprises individual flames and holding flames arranged between them, the individual flames emerging from the holding flame.
  • the flame matrix 27 points, for example, into a combustion chamber of a boiler.
  • the burner can be operated on gas appliances in accordance with EN676 "gas fan burner”. Operation in accordance with EN746-2 on thermoprocessing systems in the industrial and commercial sector is also possible.
  • At least one ignition electrode 24 and at least one monitoring electrode 25 are arranged on an outside of the housing 14 or the burner head 12. Furthermore, a boiler cover 20 is provided on the outside of the burner head 12, through which an opening of the boiler (not shown in detail) and its burner chamber can be closed.
  • FIG. 10 is a schematic sectional view of the burner 11 along the line II-II in FIG Figure 2 shown.
  • the housing 14 is tubular and has a receiving area 47, in which the fabric membrane 16 and the flame flashback 17 are arranged.
  • a flame tube 60 is connected in one piece to a burner housing 61 and forms the housing 14.
  • a spacer 48 is preferably provided between the fabric membrane 16 and the flame non-return device 17, through which the flame non-return device 17 is provided at a predetermined axial distance from the fabric membrane 16.
  • the receiving space 47 in the housing 14 comprises an inner peripheral surface 49 which is delimited on the burner side by a circumferential shoulder 51, which is preferably formed in one piece on the housing 14. On the fan side, the inner peripheral surface 49 is delimited by a groove 52. In the receiving area 47 is the tissue membrane 16, the Spacer 48 and the flame flashback 17 guided and positioned radially through the inner peripheral surface 49.
  • the detachable connecting element 54 which can be inserted into the groove 52, positions and fixes the fabric membrane 16, the spacer element 48 and the flame non-return device 17 to the shoulder 51 in the receiving area 57.
  • the releasable connecting element 54 is designed, for example, as a clamping ring or circlip which can be inserted into the groove 52.
  • the fabric membrane 16, the spacer 48 and / or the flame flashback 17 are individually replaceable in the housing 14.
  • the fabric membrane 16 is first used, for example, on the blower side, so that it lies against the shoulder 51 with a burner-side surface and is fixed in the axial direction.
  • a radial end face of the fabric membrane 16 lies against the inner circumferential surface 49, so that the fabric membrane 16 is guided radially in the receiving area 47 or can be rotated about the longitudinal central axis 37 of the housing 14.
  • the spacer element 48 can then be used, the outer circumferential surface of which also abuts the inner circumferential surface 49 of the receiving area 27.
  • the flame non-return valve 17 is used, which, with the end face facing the tissue membrane 16, abuts an axial end face of the spacer element 48.
  • the flame non-return valve 17 is also guided with its radial end face through the inner circumferential surface 49 so that it can be rotated radially to the longitudinal center axis 37.
  • the releasable connecting element 54 is introduced on the fan side into the receiving area 47 in the burner head 12 and positioned, for example, in a groove 52.
  • the fabric membrane 16, the spacer element 48 and the flame non-return device 17 are positioned with a slight pre-tension to each other and pressed against the shoulder 51, so that a positionally fixed arrangement of at least the fabric membrane 16 and the Flame flashback 17 is given in the receiving area 47 and is maintained by the releasable connecting element 54.
  • the structure of the fabric membrane 16 is based on the DE 10 2010 051 415.2 forth. This burner fabric or this fabric membrane 16 enable a combustion process, which in the DE 10 2010 051 414.4 is described, to which reference is also made in full and is the subject of this application.
  • the fabric membrane 16 has a hole pattern which comprises a plurality of through holes 32 which are arranged at regular intervals from one another.
  • the flame non-return valve 17 also comprises a hole pattern with through bores 33, which are preferably half the distance between the through holes 32 of the fabric membrane.
  • the releasable connecting element 54 enables the hole pattern of the fabric membrane 16 to be aligned with the hole pattern of the flame non-return device 17 before the releasable connecting element 54 is inserted, and the releasable connecting element 54 ensures that the tissue membrane 16 and the non-return device remain fixed after the fabric membrane 16 has been aligned with the flame non-return device 17 17 maintained in the receiving area 47 to each other.
  • the housing 14 is formed in one piece and manufactured, for example, as a turned part.
  • the housing 14 is connected via a screw connection 56 to a connection element 57, which leads to the blower 19, for example.
  • This connection element 57 is designed, for example, as a corner deflection.
  • a connection plate 58 for receiving and positioning the ignition electrode 24 and monitoring electrode 25 is provided on an outside of the housing 14.
  • FIG 4 12 is an alternative embodiment of burner 11 Figure 3 shown.
  • the housing 14 in turn comprises a receiving space 47 which is delimited by the shoulder 51 on the burner side.
  • the fabric membrane 16, the spacer 48 and the flame flashback 17 are arranged in the receiving space 57.
  • the detachable connecting element 54 is formed by a screw connection which divides the housing 14 into a burner housing 61 and a flame tube 60 which can be fastened thereon, the shoulder 51 being arranged on the flame tube 60.
  • the burner housing 61 has an external thread 62 which receives an internal thread of the flame tube 60.
  • An end face of the burner housing 61 has a clamping surface 63 on which the flame flashback 17 is supported.
  • An extension 70 can be provided between the burner housing 61 and the flame tube 60, which preferably also comprises a screw connection as a readable connecting element 54.
  • the detachable connecting element 54 can alternatively also be designed as a plug-in, tension or flange connection.
  • the embodiments according to the Figures 3 and 4th show the exemplary arrangement of the releasable connecting element 54 on the blower side, that is to say that the supplied fuel-air mixture first flows past the releasable connecting element 54 before this mixture flows through the flame check valve 17, the flow-through space 26 and the fabric membrane 16 to form the flame matrix 27 .
  • FIG 5 is another alternative embodiment to Figure 3 shown.
  • two releasable connecting elements 54 are provided, between which the receiving area 47 is formed.
  • two retaining rings or circlips are provided as releasable connecting elements 54, which limit the inner circumferential surface 49 for receiving the fabric membrane 16, the spacer element 48 and the flame non-return valve 17 or apply a pretension to these components.
  • a tube can be used as the housing 14, which only requires the provision of two grooves 52 on the inner circumference in order to position and fix the fabric membrane 16 and the flame non-return valve 17 therebetween.
  • the housing 14 can consist of a drawn or rolled as well as welded sheet material which is heat-resistant.
  • FIG 6 is a schematic side view and in Figure 7 a top view of an alternative embodiment of burner 11 Figure 1 shown.
  • the fan 19 is arranged directly on the feed 18 of the housing 14.
  • the housing 14 of this burner 11 is formed, for example, from a tube, which instead of machining according to the housing 14 in the Figures 3 to 5 is produced without cutting.
  • a circumferential bead which forms the shoulder 51, is introduced into the housing 14 by reshaping.
  • FIG 8 shows schematically enlarged such a detailed view according to the detail X in Figure 6 .
  • a clamping ring or clamp is provided in this embodiment as a releasable connecting element 54.
  • this tension ring widens its outer circumference and braces against the inner circumferential surface 49 of the housing 14.
  • the at least one ignition electrode 24 and at least one monitoring electrode 25 are arranged within the housing 14.
  • these are preferably received in a common holding tube 66.
  • the holding tube 66 is tubular, which preferably comprises an annular collar 67 on the burner side, which bears against a burner-side surface of the fabric membrane 16 and crosses a through opening 68 in the fabric membrane 16.
  • the holding tube 66 is fixed on the fan side with a bottom 69 of the housing 14, in particular braced by a screw connection. This arrangement additionally supports the tissue membrane 16 and keeps it vibration-proof.
  • FIG 9 is a schematic detailed view of an alternative embodiment of the burner head 12 to Figure 8 shown.
  • the arrangement of the tissue membrane 16, the spacer element 48 and the flame flashback 17 and the releasable connecting element 54 and their alternatives is fully in the embodiment according to the Figures 6 to 8 Referred.
  • the burner head 12 differs from the burner head 12 according to FIG Figure 8
  • a tube section 75 is provided which has a smaller diameter than the housing 14 in the receiving area 47.
  • This pipe section 75 is partially inserted into an end section 76 of the tubular housing 14, which has a curvature extending to the center of the axis.
  • the end section 76 lies against the outer circumference of the pipe section 75 and is preferably welded at the sealing point 77.
  • a press connection or a circumferential sleeve can also be provided in order to arrange this end section 76 for flush and final contact with the pipe section 75.
  • a releasable connection such as a screw connection
  • at least one sealing element is provided within the housing 14 near the sealing point 77 between the inwardly projecting pipe section 75 and the curved end section 76 in order to seal the circumferential sealing point 77. This can be a weld.
  • the inner end of the tube section 75 forms a shoulder 51, against which the fabric membrane 16 rests.
  • These embodiments of the burner 11 according to the Figures 8 and 9 include, for example, a diameter of, for example, greater than 260 mm.
  • the embodiments described above are preferably provided for diameters of up to 260 mm burner area, both the one and the other embodiment being usable for larger or smaller burner areas.
  • the burner surface is to be understood as the free surface of the tissue membrane 16 which points into a burner chamber and which is delimited by the shoulder 51 or a connecting element on the burner side.
  • a distributor body 71 is also provided in the housing 14, which has a conical or roof-shaped contour, which is oriented upstream. This distributor body 71 is fixed at a distance from the floor 69 via holding elements 72. A free jet of the fuel-air mixture entering via the feed line 18 flows radially outward along the conical surfaces of the distributor body 71, as a result of which pressure and / or mixture distribution of the supplied fuel-air mixture takes place within the housing 14 , so that a uniform application of the flame flashback 17 and the tissue membrane 16 is made possible.
  • the receiving space 47 in the above embodiments is preferably cylindrical, so that the tissue membrane 16 and the flame non-return device 17 that can be arranged therein can be adjusted in their position relative to one another in a simple manner by rotating about the longitudinal central axis 37.
  • the at least one releasable connecting element 54 By using the at least one releasable connecting element 54, not only a cost reduction in maintenance can be achieved, but at the same time also a reduction in noise due to the formation of flame nests, which, compared to an aligned arrangement of the hole catches of the fabric membrane 16 and flame non-return valve 17 by a twisted arrangement the hole pattern of the fabric membrane 16 for the hole pattern of the flame check valve 17 is adjustable.

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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)

Claims (14)

  1. Brûleur à combustion superficielle, lequel comprend une tête de brûleur (12) pourvue d'un boîtier (14) et un ventilateur (19) qui produit un mélange combustible-air qui est amené à la tête de brûleur (12) par un tube d'amenée (18) situé en amont dudit boîtier (14), le boîtier (14) présentant en aval, au niveau d'un côté sortie, une membrane de tissu (16) et comprenant un dispositif anti-retour de flamme (17) qui est disposé en amont de la membrane de tissu (16) à une distance donnée de celle-ci, et au niveau de ladite membrane de tissu (16) étant formée une matrice de flammes (27) qui comprend des flammes individuelles ainsi que des flammes de maintien disposées entre celles-ci, les flammes individuelles faisant saillie par rapport à la flamme de maintien, caractérisé en ce que
    - au moins la membrane de tissu (16) et le dispositif anti-retour de flamme (17) sont disposés grâce à au moins un élément d'assemblage (54) séparable qui prend appui dans le boîtier (14) au niveau d'une zone de réception (47), et
    - la membrane de tissu (16) présente des trous de passage (32) qui sont disposés sous la forme d'un agencement de trous et modifient leur orientation dans le boîtier (14), et en ce que le dispositif anti-retour de flamme (17) présente des trous de passage (33) disposés sous la forme d'un agencement de trous qui peut être orienté dans une position disposée en alignement par rapport à l'agencement de trous de la membrane de tissu (16), et en ce que la membrane de tissu (16) et le dispositif anti-retour de flamme (17) peuvent être maintenus ensemble par serrage grâce audit au moins un élément d'assemblage (54) séparable.
  2. Brûleur selon la revendication 1, caractérisé en ce que le boîtier (14) est réalisé en forme de tube et que la zone de réception (47) comprend une surface circonférentielle intérieure (49) grâce à laquelle ladite au moins une membrane de tissu (16) et le dispositif anti-retour de flamme (17) sont guidés de manière radiale ou latérale.
  3. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un élément d'écartement (48) est disposé entre la membrane de tissu (16) et le dispositif anti-retour de flamme (17).
  4. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'au moins un élément d'assemblage (54) séparable est prévu en amont du dispositif anti-retour de flamme (17).
  5. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que la zone de réception (47) est délimitée, en aval, par un épaulement (51) annulaire tourné vers l'axe central longitudinal (36) du boîtier (14) et, en amont, par l'élément d'assemblage (54) séparable.
  6. Brûleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'élément d'assemblage (54) séparable est réalisé en tant qu'assemblage vissé qui comprend un boîtier de brûleur (61) et un tube de flamme (60) prenant appui contre celui-ci, lesquels forment le boîtier (14), et en ce que de préférence le tube de flamme (60) comprend un épaulement (51) et en ce qu'en particulier le dispositif anti-retour de flamme (17) repose contre une surface de serrage (63) du boîtier de brûleur (61) et que la membrane de tissu (16) repose contre ledit épaulement (51).
  7. Brûleur selon la revendication 6, caractérisé en ce qu'au moins la membrane de tissu (16) peut être fixée dans le boîtier (14) grâce à l'assemblage vissé et que le dispositif anti-retour de flamme (17) peut l'être grâce à un élément d'assemblage (54) séparable.
  8. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit au moins un élément d'assemblage (54) séparable est prévu respectivement en amont et en aval de la zone de réception (47) prévue dans le boîtier (14).
  9. Brûleur selon l'une quelconque des revendications 5 à 8, caractérisé en ce que le boîtier (14) est réalisé en tant que pièce tournée.
  10. Brûleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la zone de réception (47) est réalisée en aval par un collet circonférentiel s'étendant vers l'axe central longitudinal (36), et ce en tant qu'épaulement (51) formé dans le boîtier (14) en forme de tube, lequel est réalisé de préférence par un tube étiré ou laminé ou soudé, ou bien par deux tronçons de tube (14, 75) emboités l'un dans l'autre, lesquels sont de préférence reliés entre eux de manière fixe, un tronçon de tube intérieur (75) formant un épaulement (51).
  11. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément d'assemblage (54) séparable est réalisé en tant qu'anneau de sûreté ou anneau de serrage qui peut être inséré dans une rainure circonférentielle (52) formée dans le boîtier (14), ou en ce que l'élément d'assemblage (54) séparable est formé par un anneau de serrage intérieur qui se serre par élargissement radial par rapport à la surface circonférentielle intérieure (49) du boîtier (14).
  12. Brûleur selon la revendication 1, caractérisé en ce que le tube de flamme (60) et/ou le boîtier de brûleur (61) est fabriqué en tant que pièce moulée en fonte grise ou en fonte d'aluminium, ou en ce que le boîtier (14) est réalisé en un matériau résistant à la chaleur, en particulier en acier, en acier inoxydable ou en fonte grise.
  13. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que sur une face extérieure du boîtier (14) peuvent être fixées au moins une électrode d'allumage (24) et au moins une électrode de surveillance (25) dont les pointes d'électrode s'étendent dans une matrice de flammes formée en aval au niveau de la membrane de tissu (16) ou de manière contiguë à celle-ci, ou en ce qu'il est prévu un tube de maintien (66) pour recevoir au moins une électrode d'allumage (24) ainsi qu'au moins une électrode de surveillance (25) qui peut être insérée dans un orifice de passage (68) situé dans la membrane de tissu (16) et qui s'étend à l'intérieur du boîtier (14).
  14. Utilisation du brûleur (11) selon l'une quelconque des revendications précédentes en tant que brûleur à bec plat.
EP13728327.1A 2012-07-03 2013-05-15 Brûleur à système de combustion superficielle Active EP2870409B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012102437 2012-07-03
PCT/EP2013/060033 WO2014005751A2 (fr) 2012-07-03 2013-05-15 Brûleur à système de combustion superficielle

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EP2870409A2 EP2870409A2 (fr) 2015-05-13
EP2870409B1 true EP2870409B1 (fr) 2020-03-25

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US (1) US10605451B2 (fr)
EP (1) EP2870409B1 (fr)
CA (1) CA2878086C (fr)
DE (1) DE202013102109U1 (fr)
WO (1) WO2014005751A2 (fr)

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DE202014101097U1 (de) * 2014-03-11 2015-06-12 Ulrich Dreizler Brenner mit einer Oberflächenverbrennung
JP6534333B2 (ja) * 2015-10-19 2019-06-26 リンナイ株式会社 給湯器
CN112923364B (zh) * 2021-04-21 2024-09-24 康柏森热能科技(苏州)有限公司 一种燃烧器

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Also Published As

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WO2014005751A3 (fr) 2014-02-27
CA2878086A1 (fr) 2014-01-09
US10605451B2 (en) 2020-03-31
WO2014005751A2 (fr) 2014-01-09
CA2878086C (fr) 2020-07-28
EP2870409A2 (fr) 2015-05-13
DE202013102109U1 (de) 2013-10-10
US20150192292A1 (en) 2015-07-09

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