EP2856026B1 - Brûleur à combustion superficielle - Google Patents

Brûleur à combustion superficielle Download PDF

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Publication number
EP2856026B1
EP2856026B1 EP13725588.1A EP13725588A EP2856026B1 EP 2856026 B1 EP2856026 B1 EP 2856026B1 EP 13725588 A EP13725588 A EP 13725588A EP 2856026 B1 EP2856026 B1 EP 2856026B1
Authority
EP
European Patent Office
Prior art keywords
burner
housing
holes
fabric diaphragm
holding device
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.)
Not-in-force
Application number
EP13725588.1A
Other languages
German (de)
English (en)
Other versions
EP2856026A1 (fr
Inventor
Ulrich Dreizler
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Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2856026A1 publication Critical patent/EP2856026A1/fr
Application granted granted Critical
Publication of EP2856026B1 publication Critical patent/EP2856026B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F23D14/02—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
    • F23D14/105—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 with injector axis parallel to the burner head axis
    • 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
    • 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
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • 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
    • 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
    • F23D2203/1023—Flame diffusing means using perforated plates with specific free passage areas
    • 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
    • F23D2203/1026—Flame diffusing means using perforated plates with slotshaped openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/106—Assemblies of different layers

Definitions

  • the invention relates to a burner with a surface combustion, which on the burner side has a membrane on a housing and upstream of a burner side comprises a flashback.
  • Such a burner has on an outlet side of the housing to a tissue membrane which is formed as a gas-permeable metal fiber plate.
  • This metal fiber plate is porous and further includes through holes arranged at regular intervals from each other forming a hole pattern.
  • the metal fiber plate is associated with a distribution component in the housing. Through a supply line, a fuel-air mixture is introduced into the housing and flows through the distribution component, so that after passing through the through holes in the metal fiber plate on the outlet side a flame field is formed, which has higher flames, which are caused by a regular pattern of these through holes.
  • Such housing are, for example, square, as shown in the Figures 1 and 2 is shown.
  • burners can also be cylindrical. These embodiments are suitable for particular burner systems, but their application is limited.
  • JP 2000-249311 A shows a burner with a tubular housing, which comprises a plurality of passage openings along a longitudinal axis through which the gaseous medium exits. These passage openings are covered by a heat-resistant layer of metal fibers, which are held U-shaped spanned to the passage openings. Their ends are welded along and adjacent to the passage openings with the housing.
  • This embodiment is expensive to manufacture, especially since the lateral longitudinal edges of the membrane are to be welded to a tube.
  • a burner with a tubular housing protrudes, which has a plurality of passage openings for the gaseous medium.
  • a porous ceramic mat is provided, which are positioned and fixed by retaining strips, which in turn are welded to the housing of the burner.
  • the invention has for its object to provide a burner with a surface combustion, which can be used for strip-shaped or linear heating zones and allows alignment of a tissue membrane for flame arrestor.
  • a burner which has a tissue membrane which is strip-shaped and whose length corresponds to a multiple of the width, wherein the tissue membrane has a perforated grid of at least one row of passage holes and a holding device is provided, which with the tissue membrane Distance to the flame arrester or with the interposition of a spacer element receives.
  • a preferred embodiment of the burner provides that the tissue membrane has a ratio of its length L to its width B of L / B> 5, in particular UB> 10.
  • strip burners can be formed whose lengths extend over several meters to, for example, five meters. Even such ingot burners are astonishingly finely adjustable in industrial machines up to 1:10.
  • the housing of the burner is tubular and the supply line for the fuel-air mixture at an end face, on a side wall or on a bottom of the housing is connected.
  • the flame arrestor may be integrated in a portion of the housing facing the burner side.
  • the flame arrestor works as a prevention of the burn-back of the mixture into the burner and its subsequent destruction.
  • the flame arrester is based on the principle of the Faraday miner's lamp. As a result, a compact and simplified construction of a burner with a reduced number of components can be achieved.
  • the holding device advantageously takes up the tissue membrane by clamping. This has the advantage that expansions of the tissue membrane can be compensated during operation.
  • the flame arrester may be fixed to the fabric membrane adjacent or distanced by a spacer element to the housing by clamping by means of the holding device.
  • the holding device is preferably formed by two clamping strips, which have mirror-image mutually facing receptacles for positioning the tissue membrane. This can be done in a simple manner, the clamping attachment of the tissue membrane. In addition, a subsequent replacement of the tissue membrane is simplified by only one of the two terminal strips is to be solved.
  • the terminal strips of the holding device are formed according to a first embodiment as a milled part. Alternatively, these can also be formed from one or more stackable sheet metal parts, so that cost-effective stampings can be used to form the terminal strips.
  • This holding device is preferably releasably attached to the housing. This in turn allows easy positioning and a cost-effective structure for positioning the tissue membrane for flame arrestor.
  • the housing consists of a rolled profile and the holding device for fixing the flame arrestor and the fabric membrane is fastened thereto.
  • An alternative embodiment of the burner provides that the holding device and the housing are made of a rolled material and the flame arrester and the tissue membrane are inserted into the holding device. This arrangement allows a maximum reduction of the components, since the holding device and the housing are integrally formed.
  • the fabric membrane and flame arrester can be inserted directly one above the other or by a spacer element spaced from each other in the holding device.
  • the tissue membrane has a perforated grid of at least one row of preferably equally spaced through holes.
  • the tissue membrane for the so-called inguinal burners have a one-, two- or three-row perforated grid.
  • the Lochrast réelle the flame arrester in analogy one, two or three rows formed and corresponds in particular the Lochrast réelle the tissue membrane.
  • tissue membrane preferably a plurality of sections of the tissue membrane can be arranged with a joint joint to one another.
  • a tissue membrane is, for example, according to a manufacturing method according to the DE 10 2010 051 415.2 which is incorporated by reference in its entirety and is the subject of this application.
  • tissue membranes are produced in predetermined grid dimensions and then cut, which can then be arranged via a joint joint to each other.
  • the formation of long strip-shaped and continuous tissue membranes is made possible.
  • the joint joint is preferably formed by two interlocking or two overlapping end portions. Both embodiments have the advantage that a quasi-continuous tissue membrane is provided, which prevents a transverse outflow of the fuel-air mixture through a gap within the joint joint.
  • a connecting joint is formed by two stepped or chamfered end sections, which lie against one another in a form-fitting manner.
  • a single or multi-stage transition may be given.
  • the beveled end portion may have a continuous or at least two diverging gradients.
  • a dovetail connection an omega-shaped connection, a tongue and groove connection or another connection provided with an undercut can be provided.
  • an independent entanglement can be ensured at the same time.
  • a further preferred embodiment of the connecting joint provides that the length of the end sections for forming the connecting joint is smaller than a hole spacing between two through holes.
  • the connection joint can be chosen such that the hole pattern is formed continuously with the same distance at several consecutively arranged tissue membranes.
  • FIG. 1 is a schematic side view of the invention Burner 11 is formed, which is also referred to as Leistenbrenner.
  • FIG. 2 is a schematic top view of the burner 11 according to FIG. 1 shown.
  • FIG. 3 shows a sectional view taken along the line II of the burner in FIG. 1 ,
  • This burner 11 comprises a housing 12, which is tubular. According to the in FIG. 3 illustrated embodiment, the housing is shown with a square cross-section. Alternatively, a rectangular or polygonal or round cross section or the like may be provided.
  • the housing 12 is closed at one end by a closure plate 14 or by a closure. At the opposite end, the supply 16 of a fuel-air mixture takes place.
  • a fuel supply line 17 which controls the amount of fuel to be supplied with a solenoid valve 18 and an air supply line 19
  • a fan 21 is fed with a fan wheel 22 to supply the formed fuel-air mixture to the housing 12.
  • an immediate connection of the blower 21 is provided to the housing.
  • a supply line can be switched between.
  • Various fuel gas types in particular natural gas, liquid gas or biogas, can be supplied via the fuel supply line.
  • a flame arrestor 24 is integrated into the housing 12. On a side facing the burner side portion 25 of the housing 12 a plurality of arranged in a row through holes 26 are arranged and form the flame arrester 24.
  • the Lochrast ceremonies the flame arrester 24 is preferably formed by equally spaced through holes 26.
  • a separate flame arrester 24 in the form of a perforated plate with a perforated grid can be inserted or inserted within the housing 12.
  • a separate flame arrester 24 at an upper portion 25 of the housing 12 by screwing, clamping or the like in a U-shaped housing 12 or a slotted housing 12th get connected.
  • a holding device 28 which receives a tissue membrane 29 and positioned at a distance from the flame arrester 24.
  • This holding device 28 has according to a first embodiment, two strips 31, which are releasably, preferably by a screw, on the housing 12 can be fastened. These clamping strips 31 have a receptacle 32 which is formed as a U-shaped recess. In the mirror image arrangement of the terminal strips 21 to each other can be held by a clamping in the receptacles 32, the tissue membrane 29. Alternatively, these clamping strips 31 may be formed over a plurality of stacked sheet metal layers, which are also preferably secured by a screw or clamp connection releasably secured to the housing 12.
  • FIG. 4 is an alternative embodiment to FIG. 3 shown.
  • the housing 12 corresponds to the FIG. 3 , Likewise, the introduction of the through holes 26 in the housing 12 to form the flame arrester 24.
  • the terminal strips 31 of the holding device 28 are formed as sheet metal bent parts, which have a kind of s-shaped or a stepped bend or edging.
  • the tissue membrane 29 is thereby kept clamped to the housing 12, wherein preferably between the tissue membrane 29 and the flame arrester 24, a spacer element 30 is provided.
  • the terminal strips 31, which are formed as sheet-metal bent parts, can also be screwed to the housing 12.
  • the housing 12 instead of individual through holes 26 has slot-shaped slots or is completely slotted.
  • a flame arrestor 24 is used as a separate component between the spacer element 30 and the housing 12.
  • FIG. 5 is another alternative embodiment of the housing 12 of the burner 11 according to the Figures 3 and 4 shown.
  • the housing 12 and the holding device 28 are integrally formed as a rolled profile.
  • the holding device 28 is formed as a U-shaped profiling, which merges directly into the housing 12 via a fold, wherein in the longitudinal central axis of the housing 12, a continuous gap 33 is formed.
  • the tissue membrane 29 and the flame arrester 24 are held with a spacer member 30 interposed therebetween by the retainer 28, preferably clamped. These are preferably inserted at the front.
  • the housing 12 and the holding device 28 are formed separately as sheet metal parts, which are then connected by a permanent connection, such as a rivet or welded joint, to subsequently by clamping the fabric membrane 29 and the Flame arrester 24 record.
  • the tissue membrane 29 is according to the DE 10 2010 051 415.2 manufactured and trained. This document is incorporated by reference in its entirety and is the subject of this application. Through such a tissue membrane, a combustion process is feasible, which in the DE 10 2010 051 414.4 to which reference is also made in its entirety and is the subject of this invention.
  • the tissue membrane 29 has through holes 34 which are arranged in a row one behind the other, preferably at the same distance from each other.
  • the distance of the hole pattern of the through holes 34 in the fabric membrane 29 may correspond to the hole pitch of the hole pattern of the through holes 26 of the flame arrester 24.
  • the hole spacing of the through holes 26 of the flame arrester is half the hole spacing of the through holes 34 of the fabric membrane 29.
  • the fabric membrane 29 is positioned to the flame arrestor 24 such that the first, third, fifth, etc. through holes 26 of the flashback arrestor with the through holes 34 of FIG Tissue membrane 29 is aligned.
  • a single-row arrangement of the through holes 26 of the Flashback 24 and the through holes 34 of the tissue membrane 29 is provided.
  • a two- or three-row arrangement may also be provided, wherein a double-row arrangement of the through-holes 26 and in a three-row arrangement is preferably provided analogously for a double-row arrangement of the through-holes 34, but the number of rows of the through-holes 34 may deviate from that the through holes 26 and vice versa.
  • the length L of the flame field forming tissue membrane 29 is a multiple of the width B of the tissue membrane 29.
  • the tissue membrane has a ratio of length L to width B of at least 5: 1, preferably 10: 1.
  • the connecting joint 41 in its longitudinal extent is preferably smaller than a distance between two through holes 34, so that the connecting joint 41 can be positioned such that the hole pattern of the through holes 34 is continuous and constant regardless of the juxtaposition of two sections of the fabric membrane 29 ,
  • the joint joint 41 is formed by two stepped end portions 42, 43.
  • Each end portion 42, 43 is reduced, for example, over a predetermined length to half the thickness, so that a kind of shiplap is formed and the end portions 42, 43 abut each other.
  • the end portions 42, 43 may be chamfered and overlap by analogy.
  • FIGS. 8 to 10 Further alternative embodiments of a connecting joint 41 are shown.
  • This embodiment according to the FIGS. 8 to 10 differs in that the end portions 42, 43 mesh with each other, whereas the connecting joint 41 according to the FIGS. 6 and 7 overlapping end portions 42, 43 comprises.
  • the joint joint 41 according to FIG. 8 is formed by a dovetail-shaped connection of the end portions 42, 43.
  • the joint joint 41 according to FIG. 9 represents a modification of the dovetail-shaped compound by using an omega shape instead of the dovetail shape.
  • FIG. 10 shows a connecting joint 41, which includes a tongue and groove connection with an undercut. Further alternative embodiments for producing an interlocking connecting joint 41 are also conceivable.

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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 (15)

  1. Brûleur à combustion superficielle avec un carter (12) qui présente, en amont d'un côté de brûleur, une amenée (16) pour un mélange air-carburant et, en aval d'un côté sortie, une membrane de tissu (29), la membrane de tissu (29) étant réalisée sous forme de bande et présentant une longueur (L) qui correspond à un multiple de sa largeur (B), avec un dispositif anti-retour de flamme (24) qui est disposé en amont de la membrane de tissu (29), caractérisé en ce que la membrane de tissu (29) présente un agencement de trous réalisé sous la forme d'au moins une rangée de trous de passage (34) et en ce que un dispositif de retenue (28) est prévu qui reçoit la membrane de tissu (29) avec un espacement donné par rapport au dispositif anti-retour de flamme (24) ou en la maintenant à la distance voulue grâce à l'insertion d'un élément d'écartement (30).
  2. Brûleur selon la revendication 1, caractérisé en ce que la membrane de tissu (29) présente un rapport entre longueur (L) et largeur (B) qui est d'au moins 5:1, en particulier d'au moins 10:1.
  3. Brûleur selon la revendication 1 ou 2, caractérisé en ce que le carter (12) est réalisé en forme de tube et que l'amenée du mélange air-carburant est prévue sur une face frontale, sur une paroi latérale ou une face inférieure du carter (12).
  4. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif anti-retour de flamme (24) est intégré dans une partie (25) du carter (12) qui est tournée du côté brûleur et en ce que des trous de passage (26) sont prévus de préférence dans la partie frontale (25) du carter (12) qui est tournée du côté brûleur.
  5. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que la membrane de tissu (29) est disposée par blocage dans le dispositif de retenue (28) et que le dispositif de retenue (28) comprend de préférence deux lardons de blocage (31) qui présentent des logements (32) tournés l'un vers l'autre selon une disposition en miroir afin de fixer par blocage la membrane de tissu (29).
  6. Brûleur selon la revendication 5, caractérisé en ce que le lardon de blocage (31) est réalisé sous forme de pièce fraisée ou par une bande de tôle ou plusieurs bandes de tôle superposables.
  7. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de retenue (28) peut être fixé au carter (12) de manière amovible.
  8. Brûleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le carter (12) est constitué par un profil laminé ou étiré et que le dispositif de retenue (28) destiné à la fixation du dispositif anti-retour de flamme (24) et de la membrane de tissu (29) peut y être fixé.
  9. Brûleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le carter (12) et le dispositif de retenue (28) sont réalisés en un matériau laminé ou étiré et que le dispositif anti-retour de flamme (24) et la membrane de tissu (29) peuvent être insérés dans le dispositif de retenue (28).
  10. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que la membrane de tissu (29) présente un agencement de trous réalisé sous la forme d'une rangée de trous de passage (34) disposés de préférence à une même distance les uns des autres.
  11. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que la membrane de tissu (29) présente un agencement de trous réalisé sous la forme d'au moins une, deux ou trois rangées, et en ce que l'agencement de trous du dispositif anti-retour de flamme (24) se présente de préférence sous la forme d'une, de deux ou de trois rangées et comprend en particulier un nombre de rangées qui correspond à celui de la membrane de tissu (29).
  12. Brûleur selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs parties de membrane de tissu (29) peuvent être disposées en une bande unique grâce à un point d'assemblage (41), et en ce que le point d'assemblage (41) est formé en particulier par deux parties d'extrémité (42, 43) qui entrent l'une dans l'autre ou qui se chevauchent.
  13. Brûleur selon la revendication 12, caractérisé en ce que les parties d'extrémité (42, 43) sont étagées ou biseautées et reposent l'une contre l'autre par conjugaison de forme.
  14. Brûleur selon la revendication 12, caractérisé en ce que les parties d'extrémité (42, 43) sont réalisées sous forme d'assemblage en queue d'aronde, d'assemblage en forme d'oméga ou d'assemblage à rainure et languette de manière à entrer l'une dans l'autre avec une contre-dépouille donnée.
  15. Brûleur selon la revendication 12, caractérisé en ce que le point d'assemblage (41) est réalisé de manière à être, dans l'extension longitudinale de la membrane de tissu (29), plus petit qu'une distance séparant deux trous de passage (34).
EP13725588.1A 2012-06-01 2013-05-15 Brûleur à combustion superficielle Not-in-force EP2856026B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012102010 2012-06-01
PCT/EP2013/060035 WO2013178466A1 (fr) 2012-06-01 2013-05-15 Brûleur à combustion superficielle

Publications (2)

Publication Number Publication Date
EP2856026A1 EP2856026A1 (fr) 2015-04-08
EP2856026B1 true EP2856026B1 (fr) 2016-02-24

Family

ID=48536799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13725588.1A Not-in-force EP2856026B1 (fr) 2012-06-01 2013-05-15 Brûleur à combustion superficielle

Country Status (3)

Country Link
EP (1) EP2856026B1 (fr)
DE (1) DE202013102111U1 (fr)
WO (1) WO2013178466A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695818A (en) * 1969-10-31 1972-10-03 Rinnai Kk Radiant burner
CA2005415C (fr) * 1989-01-10 1994-03-01 Willie H. Best Bruleur a gaz a rendement eleve
BR9306001A (pt) 1992-03-03 1997-10-21 Bekaert Sa Nv Placa de fibra metálica porosa
JP4030214B2 (ja) 1999-02-25 2008-01-09 東京瓦斯株式会社 表面燃焼型ラインバーナ
GB2437976B (en) 2006-05-09 2011-04-06 Valor Ltd Burner assembly for gaseous fuel
WO2011069839A1 (fr) 2009-12-11 2011-06-16 Bekaert Combustion Technology B.V. Brûleur pourvu d'une plateforme de brûleur à faible porosité
DE102010051414B4 (de) 2010-11-16 2013-10-24 Ulrich Dreizler Verbrennungsverfahren mit kühler Flammenwurzel
DE102010051415B4 (de) 2010-11-16 2012-12-27 Ulrich Dreizler Verdrängungsverfahren bei der Herstellung einer Brennergewebemembrane für eine kühle Flammenwurzel

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DE202013102111U1 (de) 2013-09-03
EP2856026A1 (fr) 2015-04-08
WO2013178466A1 (fr) 2013-12-05

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