EP1387123A1 - Radiant burner - Google Patents

Radiant burner Download PDF

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Publication number
EP1387123A1
EP1387123A1 EP03077435A EP03077435A EP1387123A1 EP 1387123 A1 EP1387123 A1 EP 1387123A1 EP 03077435 A EP03077435 A EP 03077435A EP 03077435 A EP03077435 A EP 03077435A EP 1387123 A1 EP1387123 A1 EP 1387123A1
Authority
EP
European Patent Office
Prior art keywords
bar
tooth
radiant
grid
orifice
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.)
Granted
Application number
EP03077435A
Other languages
German (de)
French (fr)
Other versions
EP1387123B1 (en
Inventor
Daniel Lavigne
Koen Van Overbeke
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Individual
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Individual
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Publication date
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Publication of EP1387123A1 publication Critical patent/EP1387123A1/en
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Publication of EP1387123B1 publication Critical patent/EP1387123B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
    • F26B3/305—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements the infrared radiation being generated by combustion or combustion gases
    • 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
    • F23D14/148—Radiant burners using screens or perforated plates with grids, e.g. strips or rods, as radiation intensifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/104—Grids, e.g. honeycomb grids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2211/00—Thermal dilatation prevention or compensation
    • 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
    • F23D2900/14—Special features of gas burners
    • F23D2900/14001—Sealing or support of burner plate borders

Definitions

  • the invention relates to a radiant provided with a frame on which at least one pair of protrusions, each comprising a first and a second projection, are arranged, the first and second protrusions being each placed at a distance from each other on a longitudinal edge of the frame, each projection being provided with an orifice, said radiant also comprising by pair of projections a movable bar having first and second ends located opposite one on the other, said bar being arranged so that each of the ends can be engaged in one of the respective orifices, said bar used to press a grid against the frame.
  • Radiant heaters are widely used in industry, in particularly in the paper industry for drying networks cellulose.
  • US Patent 6,007,329 describes a radiant comprising a frame provided with two pairs of projections located on the sides of the frame.
  • the bar which includes a depression at one of its ends, is arranged to slide into a first projection provided with a means fixed connection arranged to block the bar in one direction longitudinal. Once the first end of the bar is inserted into the first projection, the operator can slide the second end into the second projection and insert it into an opening in the second projection, a mobile connection means, blocking the bar in the longitudinal direction.
  • the bar thus fixed is used to support the grid against the frame.
  • a disadvantage of known radiant heaters is that the placement or replacing the grille can be tricky. The operator must effect not only hold the grid in place but also the bars while it inserts the mobile connection means.
  • the object of the invention is to produce a radiant which can be mounted and replaced more easily, while ensuring maintenance suitable for the grid.
  • a radiant according to the invention is characterized in that the first end of the bar has a first tooth dimensioned so as to be able to cross said orifice while making pivot the bar and to abut against the projection when the bar crosses the orifice, the bar also comprising a flexible blade arranged to limit the movement of the bar when in the fixing position of the grid, it crosses the orifices of the pair of projections to which it has been assigned.
  • the fact that the bar must pivot in the hole to cross the latter means that the bar already retains the grid when the bar is mounted in the projection.
  • the presence of the first tooth and flexible blade holds the grid with the bar and protrusions and limit the movement of the bar thus preventing a involuntary dislodgement of the grid. Fitting or replacing the grid therefore causes only a pivoting and a movement of translation of the bar.
  • a first embodiment of a following radiant the invention is characterized in that a second tooth juxtaposes the first tooth, which second tooth is sized to be located in the orifice when the bar is in said fixing position. A movement of the bar in the vertical direction is thus limited.
  • a second embodiment of a following radiant the invention is characterized in that the first tooth and the flexible blade are applied to the same end of the bar and extend from on either side of the orifice when the bar is in said position of fixation. The whole operation of fixing the bar is thus essentially carried over to the same projection.
  • a third embodiment of a following radiant the invention is characterized in that the flexible blade is located at the second end of the bar. The fixing of the bar in the projections is thus produced on the two projections of the same pair.
  • a stop Preferably under the flexible blade is located a stop. The movement of the flexible blade is thus limited when the bar is in fixing position.
  • the radiant 1 according to the invention and illustrated in Figure 1 has a frame 2 which surrounds a grid 10.
  • This grid functions protective element of a combustion support (not included in the drawings) which is retained by lugs 23.
  • the grid also serves to increase the radiation of the radiant.
  • the grid has longitudinal edges 10a and 10b in form of cornice and which are used to receive bars 11, as it will be described in more detail below. This shape of the grid edges keeps the grid cooler there and prevents as well as dilations would come to dislodge the grid.
  • Figures 8 and 9 illustrate another embodiment of the grid 10 and of the means with which the grid and the frame 2 are interconnected.
  • the grid is fixed to a frame 40 formed by small transverse bars 41 and longitudinal bars 42.
  • the frame is also provided with feet 43 arranged to bear on the frame.
  • Figure 9 illustrates a set of small bars transverse and longitudinal, it is also possible to form reinforcement using only small crossbars or only small longitudinal bars.
  • the grid itself is then either suspended from the frame, or placed on the frame and fixed using eyelets 44 or other fastening means. When the grid is suspended from the frame, as illustrated in figure 8, it also comes extend below feet 43.
  • the embodiment illustrated in Figures 8 and 9 allows to use a different material for the grid and the frame.
  • the grid will be made of aluminum or an aluminum-based alloy.
  • the frame will be made of a nickel-chrome alloy or melting.
  • the use of aluminum or an aluminum-based alloy is that this material is more resistant to corrosion than nichel-chrome. But as aluminum is less resistant to creep, the reinforcement allows support the grid when due to the high temperature it would creep.
  • Each longitudinal edge 7, 8 of the frame 2 has a pair of projections 3 and 4 respectively 5 and 6.
  • a single pair of projections on the same longitudinal edge could suffice, the grid then being retained by other means on the other longitudinal edge.
  • the projections are placed on the corners of the frame to give a length maximum to the bars and ensure optimal support of the grid.
  • the projections could also be placed in other places of the longitudinal edge as those formed by the angles.
  • the first (3 respectively 5) and the second (4 respectively 6) projection of the same pair (3.4 respectively 5.6) of protrusions are arranged at a distance from each other. So for an edge having a length of 187 mm the distance between two projections must be at least 90 mm.
  • Each projection 3, 4, 5 and 6 is provided with an orifice 9, which preferably is rectangular. These holes are used for the passage of movable bars 11 illustrated in FIGS. 2 and 3.
  • Each bar mobile crosspiece when the grid and the bar are mounted on the frame, one of the pairs of projections as illustrated in FIGS. 4 and 5.
  • the bars 11 When the bars 11 are engaged in the holes of the projections which have been allocated, they serve to retain the grid 10 in place by supporting it against the frame 2.
  • the grid has edges in the form of cornice (see Figure 6) the bars are housed in these cornices, thus keeping the grid well in place.
  • Each bar 11 has a first 13 and a second 17 end located opposite each other.
  • the first one end 13 preferably has a rounded shape which hand significantly reduces the likelihood of the operator getting injured when manipulates the bar and on the other hand facilitates the pivoting of the bar in the hole, as will be described below.
  • the first end 13 of the bar has also a first tooth 12 sized so as to be able cross the orifice 9 by pivoting the bar 11 as illustrated in the Figure 4b.
  • the first tooth has a height of 5.5 to 6 mm. This prevents the bar not only to enter horizontally into the opening 9, but also to come out of the hole when the bar is in position horizontal grid attachment.
  • the bar also includes a flexible blade 16 arranged to limit the movement of the bar 11 when it is in grid fixing position.
  • the flexible blade is obtained by cutting from the very mass of the bar thus creating a longitudinal slit over a small distance from the bar.
  • the flexible blade is located at the first end 13 of the bar, then that in the second embodiment illustrated in Figure 3, the blade flexible is located at the second end 17 of the bar.
  • the blade flexible for example has a thickness of 1 to 2 mm and extends over a length of 10 to 25 mm.
  • the bar also has a second tooth 14 juxtaposed with the first tooth 12.
  • the second tooth has a height significantly lower than that of the first, for example 5 mm.
  • the second tooth is sized to be located in the hole when the bar is in its fixing position. So, as illustrated in FIG. 4a, the presence of this second tooth in the orifice limits a vertical movement of the bar in this opening.
  • the second tooth for example has a length of 5 mm corresponding to that of the projection.
  • a stop 24 is located under the flexible blade 16 to limit the downward movement of the blade tip preventing too much great downward bending which would allow the blade to pass through the orifice when the bar is in the fixing position.
  • the bar comprises a third tooth 19 having an inclined flank 20.
  • the third tooth is placed at a distance from the flexible blade 16 of such so that the flexible blade and the third tooth extend from side to side and on the other side of the second projection when the bar is in its position fixation.
  • the third tooth has for example a height of 10 mm.
  • the third tooth is juxtaposed with a fourth tooth 21 which is sized to be located, like the second tooth 14, in the orifice when the bar is in its fixing position.
  • the embodiment of the bar 11 illustrated in the figure 10 is distinguished by the presence of the stop 24 on the flexible blade 16 and not more below it. This prevents the bar from passes through the projection when it is put in place.
  • the bar illustrated in Figure 10 also includes an appendage 44 which extends vertically with respect to the base of the bar and which is located near the second end 17. This appendix facilitates the handling of the bar. Indeed, since there is more material present thanks to the appendix, a better grip is ensured.
  • the first end 13 is introduced, for example in the projection 3, by tilting the bar at an angle of approximately 20 to 30 ° and by rotating it towards the edge of the frame 2 as illustrated in the figure 4b.
  • the pivoting causes that the first tooth comes to rest against the projection.
  • the bar is then slide horizontally through the hole by pressing the flexible blade so that the tip of the flexible blade can enter the hole.
  • the bar is slid through this hole on sufficient distance to allow engagement of the second end of the bar in the hole in the projection 4.
  • the bar is then moved back so that the second end can penetrate in the opening of the second projection.
  • the recoil of the bar is stopped by the first tooth which abuts against the first projection.
  • the second tooth 14 is in the opening and the first tooth 12 as well as the flexible blade are located on either side of the first projection thus fixing the bar in the holes and the grid against the frame.
  • the first tooth is engaged in the same way than that previously described.
  • the flexible blade is at the second end of the bar it is engaged in the second protrusion, after the first tooth has passed through the first projection by completely passing it through the orifice of the second projection.
  • the third tooth 19 and the flexible blade 16 will be on either side and on the other side of the second projection.
  • the second projections of each pair each have a cutout 30 extending over a peripheral part of this second projection and giving access to the orifice.
  • the cutout of each projection is arranged with so as to be oriented towards the internal periphery of the radiant which allows better retention of the grid during assembly.
  • the cut is oblique allowing to follow the inclination of the wire rack.
  • the flexible blade bends slightly as it passes through the hole. Once passed beyond from this orifice, the flexible blade returns to its initial shape, so that that the free end of the blade abuts against the second projection, when trying to bring the bar back.
  • the first tooth comes put against the first projection so as to prevent the bar from cross the opening of the first projection.
  • the operator when the second end is engaged in the opening of the second projection, the operator can make rotate the bar in a plane essentially parallel to the plane of the frame 1 and place the bar opposite the cutout.
  • the section transverse of the bar at the height of the projection is arranged to be able to pass through the cutout and thus access the orifice.
  • the cut can occur on the peripheral edges amount of the projection or extend from the top of the projection to the orifice of this second projection.
  • the bar could be resilient, of this way, the pivoting of the second end would be done by bending of the bar relative to the first end, engaged in the first projection. Once the depression is placed in front of the projection, the bar returning to its original shape could engage itself in the opening of the first projection via the cutout.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Baking, Grill, Roasting (AREA)
  • Blinds (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Gas Burners (AREA)
  • Meat, Egg Or Seafood Products (AREA)

Abstract

The radiant heater comprises a frame which surrounds a grille acting as a protective element of a combustion support which is retained by lugs (23). The grille comprises longitudinal edges which receive mobile bars (11). Each longitudinal edge (7) of the frame comprises a pair of projections (3,4) provided with an orifice through which the bars pass. When the bars are engaged in the orifices they serve to retain the grille in place, supporting it against the frame. The first end (13) of the bar comprises a tooth (12) which passes through the orifice and pivots the bar. The bar also comprises a flexible strip (16) for limiting the bar's movement when it passes through the orifice.

Description

L'invention concerne un radiant pourvu d'un cadre sur lequel au moins une paire de saillies, comprenant chacune une première et une deuxième saillie, sont disposées, les premières et deuxièmes saillies étant chaque fois disposées à distance l'une de l'autre sur un bord longitudinal du cadre, chaque saillie étant pourvue d'un orifice, ledit radiant comprenant également par paire de saillies une barrette mobile ayant une première et une deuxième extrémité situées à l'opposé l'une de l'autre, ladite barrette étant agencée pour que chacune des extrémités puisse être engagée dans un des orifices respectifs, ladite barrette servant à appuyer une grille contre le cadre.The invention relates to a radiant provided with a frame on which at least one pair of protrusions, each comprising a first and a second projection, are arranged, the first and second protrusions being each placed at a distance from each other on a longitudinal edge of the frame, each projection being provided with an orifice, said radiant also comprising by pair of projections a movable bar having first and second ends located opposite one on the other, said bar being arranged so that each of the ends can be engaged in one of the respective orifices, said bar used to press a grid against the frame.

Les radiants sont largement utilisés dans l'industrie, en particulier dans l'industrie du papier pour le séchage des réseaux cellulosiques.Radiant heaters are widely used in industry, in particularly in the paper industry for drying networks cellulose.

Le brevet US 6.007.329 décrit un radiant comprenant un cadre pourvu de deux paires de saillies situées sur les côtés du cadre. La barrette qui comprend une dépression à l'une de ses extrémités, est agencée pour se glisser dans une première saillie pourvue d'un moyen de connexion fixe agencé pour bloquer la barrette dans un sens longitudinal. Une fois la première extrémité de la barrette insérée dans la première saillie, l'opérateur peut glisser la deuxième extrémité dans la deuxième saillie et y insérer, dans une ouverture située dans la deuxième saillie, un moyen de connexion mobile, bloquant la barrette dans le sens longitudinal. La barrette ainsi fixée sert à appuyer la grille contre le cadre.US Patent 6,007,329 describes a radiant comprising a frame provided with two pairs of projections located on the sides of the frame. The bar which includes a depression at one of its ends, is arranged to slide into a first projection provided with a means fixed connection arranged to block the bar in one direction longitudinal. Once the first end of the bar is inserted into the first projection, the operator can slide the second end into the second projection and insert it into an opening in the second projection, a mobile connection means, blocking the bar in the longitudinal direction. The bar thus fixed is used to support the grid against the frame.

Un désavantage des radiants connus est que le placement ou le remplacement de la grille peut s'avérer délicat. L'opérateur doit en effet non seulement tenir la grille en place mais également les barrettes pendant qu'il insert le moyen de connexion mobile. A disadvantage of known radiant heaters is that the placement or replacing the grille can be tricky. The operator must effect not only hold the grid in place but also the bars while it inserts the mobile connection means.

L'invention a pour but de réaliser un radiant qui peut être monté et remplacé de façon plus facile, tout en garantissant le maintien convenable de la grille.The object of the invention is to produce a radiant which can be mounted and replaced more easily, while ensuring maintenance suitable for the grid.

A cette fin un radiant suivant l'invention est caractérisé en ce que la première extrémité de la barrette comporte une première dent dimensionnée de telle façon à pouvoir traverser ledit orifice en faisant pivoter la barrette et à buter contre la saillie lorsque la barrette traverse l'orifice, la barrette comportant également une lame flexible agencée pour limiter le mouvement de la barrette lorsque, en position de fixation de la grille, elle traverse les orifices de la paire de saillies à laquelle elle a été attribuée. Le fait que la barrette doit pivoter dans l'orifice pour traverser ce dernier entraíne que la barrette retient déjà la grille lorsque la barrette est montée dans la saillie. La présence de la première dent et de la lame flexible permet de maintenir la grille à l'aide de la barrette et des saillies et de limiter le mouvement de la barrette empêchant ainsi un délogement involontaire de la grille. Le montage ou le remplacement de la grille n'entraíne donc qu'un pivotement et un mouvement de translation de la barrette.To this end, a radiant according to the invention is characterized in that the first end of the bar has a first tooth dimensioned so as to be able to cross said orifice while making pivot the bar and to abut against the projection when the bar crosses the orifice, the bar also comprising a flexible blade arranged to limit the movement of the bar when in the fixing position of the grid, it crosses the orifices of the pair of projections to which it has been assigned. The fact that the bar must pivot in the hole to cross the latter means that the bar already retains the grid when the bar is mounted in the projection. The presence of the first tooth and flexible blade holds the grid with the bar and protrusions and limit the movement of the bar thus preventing a involuntary dislodgement of the grid. Fitting or replacing the grid therefore causes only a pivoting and a movement of translation of the bar.

Une première forme de réalisation d'un radiant suivant l'invention est caractérisée en ce qu'une deuxième dent juxtapose la première dent, laquelle deuxième dent est dimensionnée pour se situer dans l'orifice lorsque la barrette est dans ladite position de fixation. Un mouvement de la barrette dans le sens vertical est ainsi limité.A first embodiment of a following radiant the invention is characterized in that a second tooth juxtaposes the first tooth, which second tooth is sized to be located in the orifice when the bar is in said fixing position. A movement of the bar in the vertical direction is thus limited.

Une deuxième forme de réalisation d'un radiant suivant l'invention est caractérisée en ce que la première dent et la lame flexible sont appliquées sur un même extrémité de la barrette et s'étendent de part et d'autre de l'orifice lorsque la barrette est dans ladite position de fixation. Toute l'opération de fixation de la barrette est ainsi essentiellement reportée sur une même saillie. A second embodiment of a following radiant the invention is characterized in that the first tooth and the flexible blade are applied to the same end of the bar and extend from on either side of the orifice when the bar is in said position of fixation. The whole operation of fixing the bar is thus essentially carried over to the same projection.

Une troisième forme de réalisation d'un radiant suivant l'invention est caractérisée en ce que la lame flexible est située à la deuxième extrémité de la barrette. La fixation de la barrette dans les saillies est ainsi réalisée sur les deux saillies d'une même paire.A third embodiment of a following radiant the invention is characterized in that the flexible blade is located at the second end of the bar. The fixing of the bar in the projections is thus produced on the two projections of the same pair.

De préférence sous la lame flexible est situé un arrêt. Le mouvement de la lame flexible est ainsi limité lorsque la barrette est en position de fixation.Preferably under the flexible blade is located a stop. The movement of the flexible blade is thus limited when the bar is in fixing position.

L'invention sera maintenant décrite plus en détail à l'aide des dessins qui reprennent des exemples de réalisation d'un radiant suivant l'invention. Dans les dessins :

  • la figure 1 illustre de façon schématique le cadre d'un radiant muni d'une grille;
  • la figure 2 respectivement 3 illustrent une première respectivement une deuxième forme de réalisation d'une barrette faisant partie d'un radiant suivant l'invention;
  • la figure 4 respectivement 5 illustrent une partie du cadre du radiant avec la barrette montée;
  • la figure 6 illustre une découpe selon la ligne VI-VI'(figure 1);
  • la figure 7 illustre une autre forme de réalisation d'un radiant;
  • les figures 8 et 9 illustrent une autre forme de réalisation de la grille; et
  • la figure 10 illustre une autre forme de réalisation de la barrette.
    • The invention will now be described in more detail using the drawings which show exemplary embodiments of a radiant according to the invention. In the drawings:
  • Figure 1 schematically illustrates the frame of a radiant provided with a grid;
  • FIG. 2 respectively 3 illustrate a first respectively a second embodiment of a bar forming part of a radiant according to the invention;
  • FIG. 4 respectively 5 illustrate a part of the frame of the radiant with the bar mounted;
  • Figure 6 illustrates a cut along line VI-VI '(Figure 1);
  • FIG. 7 illustrates another embodiment of a radiant;
  • Figures 8 and 9 illustrate another embodiment of the grid; and
  • FIG. 10 illustrates another embodiment of the bar.

    • Dans les dessins une même référence a été attribuée à un même élément ou à un élément analogue.In the drawings, the same reference has been assigned to a same or similar element.

    Le radiant 1 suivant l'invention et illustré à la figure 1 comporte un cadre 2 qui entoure une grille 10. Cette grille fait fonction d'élément protecteur d'un support de combustion (non repris dans les dessins) qui est retenu par des pattes 23. La grille sert également à augmenter le rayonnement du radiant. De préférence, comme illustré à la figure 6, la grille comporte des bords longitudinaux 10a et 10b en forme de corniche et qui servent à recevoir des barrettes 11, comme il sera décrit plus en détail ci-dessous. Cette forme des bords de grille permet de maintenir la grille plus froide en cet endroit et d'empêcher ainsi que des dilatations viendraient à déloger la grille.The radiant 1 according to the invention and illustrated in Figure 1 has a frame 2 which surrounds a grid 10. This grid functions protective element of a combustion support (not included in the drawings) which is retained by lugs 23. The grid also serves to increase the radiation of the radiant. Preferably, as illustrated in Figure 6, the grid has longitudinal edges 10a and 10b in form of cornice and which are used to receive bars 11, as it will be described in more detail below. This shape of the grid edges keeps the grid cooler there and prevents as well as dilations would come to dislodge the grid.

    Les figures 8 et 9 illustrent une autre forme de réalisation de la grille 10 et des moyens avec lesquels la grille et le cadre 2 sont reliés entre eux. La grille est fixée à une armature 40 formée par des petites barres transversales 41 et longitudinales 42. L'armature est également pourvue de pieds 43 agencés pour prendre appui sur le cadre. Malgré le fait que la figure 9 illustre un ensemble de petites barres transversales et longitudinales, il est également possible de former l'armature en utilisant uniquement des petites barres transversales ou uniquement des petites barres longitudinales. La grille même est alors soit suspendue à l'armature, soit posée sur l'armature et fixée à l'aide d'oeillets 44 ou d'autres moyens de fixation. Lorsque la grille est suspendue à l'armature, comme illustré à la figure 8, elle vient également s'étendre au-dessous des pieds 43.Figures 8 and 9 illustrate another embodiment of the grid 10 and of the means with which the grid and the frame 2 are interconnected. The grid is fixed to a frame 40 formed by small transverse bars 41 and longitudinal bars 42. The frame is also provided with feet 43 arranged to bear on the frame. Despite the fact that Figure 9 illustrates a set of small bars transverse and longitudinal, it is also possible to form reinforcement using only small crossbars or only small longitudinal bars. The grid itself is then either suspended from the frame, or placed on the frame and fixed using eyelets 44 or other fastening means. When the grid is suspended from the frame, as illustrated in figure 8, it also comes extend below feet 43.

    La forme de réalisation illustrée aux figures 8 et 9 permet d'utiliser une matière différente pour la grille et l'armature. Ainsi la grille sera fabriquée en aluminium ou en un alliage à base d'aluminium. L'armature quant à elle sera fabriquée en un alliage nickel-chrome ou en fonte. L'usage d'aluminium ou d'un alliage à base d'aluminium est que cette matière résiste mieux à la corrosion que le nichel-chrome. Mais comme l'aluminium résiste moins bien au fluage, l'armature permet de soutenir la grille lorsque dû à la température élevée elle viendrait à fluer.The embodiment illustrated in Figures 8 and 9 allows to use a different material for the grid and the frame. So the grid will be made of aluminum or an aluminum-based alloy. The frame will be made of a nickel-chrome alloy or melting. The use of aluminum or an aluminum-based alloy is that this material is more resistant to corrosion than nichel-chrome. But as aluminum is less resistant to creep, the reinforcement allows support the grid when due to the high temperature it would creep.

    Chaque bord longitudinal 7, 8 du cadre 2 comporte une paire de saillies 3 et 4 respectivement 5 et 6. Suivant une autre forme de réalisation d'un radiant suivant l'invention une seule paire de saillies sur un même bord longitudinal pourrait suffir, la grille étant alors retenue par d'autre moyens sur l'autre bord longitudinal. De préférence, les saillies sont placées sur les angles du cadre pour donner ainsi une longueur maximale aux barrettes et assurer un soutien optimal de la grille. Bien entendu les saillies pourraient aussi être placées en d'autres endroits du bord longitudinal que ceux formés par les angles. Toutefois, il est nécessaire que la première (3 respectivement 5) et la deuxième (4 respectivement 6) saillie d'une même paire (3,4 respectivement 5,6) de saillies soient disposées à distance l'une de l'autre. Ainsi pour un bord ayant une longueur de 187 mm la distance entre deux saillies doit être d'au moins 90 mm.Each longitudinal edge 7, 8 of the frame 2 has a pair of projections 3 and 4 respectively 5 and 6. According to another form of realization of a radiant according to the invention a single pair of projections on the same longitudinal edge could suffice, the grid then being retained by other means on the other longitudinal edge. Preferably, the projections are placed on the corners of the frame to give a length maximum to the bars and ensure optimal support of the grid. Well heard the projections could also be placed in other places of the longitudinal edge as those formed by the angles. However, it is necessary that the first (3 respectively 5) and the second (4 respectively 6) projection of the same pair (3.4 respectively 5.6) of protrusions are arranged at a distance from each other. So for an edge having a length of 187 mm the distance between two projections must be at least 90 mm.

    Chaque saillie 3, 4, 5 et 6 est pourvue d'un orifice 9, qui de préférence est de forme rectangulaire. Ces orifices servent au passage de barrettes mobiles 11 illustrées aux figures 2 et 3. Chaque barrette mobile traverse, lorsque la grille et la barrette sont montées sur le cadre, une des paires de saillies comme illustré aux figures 4 et 5. Lorsque les barrettes 11 sont engagées dans les orifices des saillies qui leur ont été attribuées, elles servent à retenir la grille 10 en place en l'appuyant contre le cadre 2. Lorsque la grille possède des bords en forme de corniche (voir figure 6) les barrettes viennent se loger dans ces corniches, maintenant ainsi la grille bien en place.Each projection 3, 4, 5 and 6 is provided with an orifice 9, which preferably is rectangular. These holes are used for the passage of movable bars 11 illustrated in FIGS. 2 and 3. Each bar mobile crosspiece, when the grid and the bar are mounted on the frame, one of the pairs of projections as illustrated in FIGS. 4 and 5. When the bars 11 are engaged in the holes of the projections which have been allocated, they serve to retain the grid 10 in place by supporting it against the frame 2. When the grid has edges in the form of cornice (see Figure 6) the bars are housed in these cornices, thus keeping the grid well in place.

    Chaque barrette 11 comporte une première 13 et une deuxième 17 extrémité situées à l'opposé l'une de l'autre. La première extrémité 13 comporte de préférence une forme arrondie ce qui d'une part réduit sensiblement la probabilité que l'opérateur s'y blesse lorsqu'il manipule la barrette et d'autre part facilite le pivotement de la barrette dans l'orifice, comme il sera décrit ci-après.Each bar 11 has a first 13 and a second 17 end located opposite each other. The first one end 13 preferably has a rounded shape which hand significantly reduces the likelihood of the operator getting injured when manipulates the bar and on the other hand facilitates the pivoting of the bar in the hole, as will be described below.

    La première extrémité 13 de la barrette comporte également une première dent 12 dimensionnée de telle façon à pouvoir traverser l'orifice 9 en faisant pivoter la barrette 11 comme illustré à la figure 4b. Ainsi, pour une hauteur de 5 mm de l'orifice 9, la première dent comporte une hauteur de 5,5 à 6 mm. Ceci empêche la barrette non seulement de s'introduire de façon horizontale dans l'orifice 9, mais également de sortir de l'orifice lorsque la barrette se trouve en position horizontale de fixation de la grille.The first end 13 of the bar has also a first tooth 12 sized so as to be able cross the orifice 9 by pivoting the bar 11 as illustrated in the Figure 4b. Thus, for a height of 5 mm from the orifice 9, the first tooth has a height of 5.5 to 6 mm. This prevents the bar not only to enter horizontally into the opening 9, but also to come out of the hole when the bar is in position horizontal grid attachment.

    La barrette comporte également une lame flexible 16 agencée pour limiter le mouvement de la barrette 11 lorsqu'elle est en position de fixation de la grille.The bar also includes a flexible blade 16 arranged to limit the movement of the bar 11 when it is in grid fixing position.

    Dans les exemples de réalisation illustrés aux figures 2 et 3, la lame flexible est obtenue par découpage dans la masse même de la barrette créant ainsi une fente longitudinale sur une petite distance de la barrette. Dans la première forme de réalisation, illustrée à la figure 2, la lame flexible est située à la première extrémité 13 de la barrette, alors que dans la deuxième forme de réalisation illustrée à la figure 3, la lame flexible est située à la deuxième extrémité 17 de la barrette. La lame flexible possède par exemple une épaisseur de 1 à 2 mm et s'étend sur une longueur de 10 à 25 mm.In the exemplary embodiments illustrated in FIGS. 2 and 3, the flexible blade is obtained by cutting from the very mass of the bar thus creating a longitudinal slit over a small distance from the bar. In the first embodiment, illustrated in FIG. 2, the flexible blade is located at the first end 13 of the bar, then that in the second embodiment illustrated in Figure 3, the blade flexible is located at the second end 17 of the bar. The blade flexible for example has a thickness of 1 to 2 mm and extends over a length of 10 to 25 mm.

    Dans la forme de réalisation de la barrette illustrée à la figure 2, la barrette comporte également une deuxième dent 14 juxtaposée à la première dent 12. La deuxième dent possède une hauteur nettement inférieure à celle de la première, par exemple de 5 mm. La deuxième dent est dimensionnée pour se situer dans l'orifice lorsque la barrette est dans sa position de fixation. Ainsi, comme illustré à la figure 4a, la présence de cette deuxième dent dans l'orifice limite un mouvement vertical de la barrette dans cet orifice. La deuxième dent possède par exemple une longueur de 5 mm correspondant à celle de la saillie.In the embodiment of the bar illustrated in the Figure 2, the bar also has a second tooth 14 juxtaposed with the first tooth 12. The second tooth has a height significantly lower than that of the first, for example 5 mm. The second tooth is sized to be located in the hole when the bar is in its fixing position. So, as illustrated in FIG. 4a, the presence of this second tooth in the orifice limits a vertical movement of the bar in this opening. The second tooth for example has a length of 5 mm corresponding to that of the projection.

    Un arrêt 24 est situé sous la lame flexible 16 pour limiter le déplacement vers le bas de la pointe de la lame empêchant une trop grande flexion vers le bas qui permettrait le passage de la lame à travers l'orifice lorsque la barrette est en position de fixation.A stop 24 is located under the flexible blade 16 to limit the downward movement of the blade tip preventing too much great downward bending which would allow the blade to pass through the orifice when the bar is in the fixing position.

    Dans le deuxième exemple de réalisation repris à la figure 3, la barrette comporte une troisième dent 19 ayant un flanc 20 incliné. La troisième dent est placée à distance de la lame flexible 16 de telle façon à ce que la lame flexible et la troisième dent s'étendent de part et d'autre de la deuxième saillie lorsque la barrette est dans sa position de fixation. La troisième dent possède par exemple une hauteur de 10 mm. La troisième dent est juxtaposée d'une quatrième dent 21 qui est dimensionnée pour se situer, tout comme la deuxième dent 14, dans l'orifice lorsque la barrette est dans sa position de fixation.In the second example of embodiment shown in the figure 3, the bar comprises a third tooth 19 having an inclined flank 20. The third tooth is placed at a distance from the flexible blade 16 of such so that the flexible blade and the third tooth extend from side to side and on the other side of the second projection when the bar is in its position fixation. The third tooth has for example a height of 10 mm. The third tooth is juxtaposed with a fourth tooth 21 which is sized to be located, like the second tooth 14, in the orifice when the bar is in its fixing position.

    La forme de réalisation de la barrette 11 illustrée à la figure 10 se distingue par la présence de l'arrét 24 sur la lame flexible 16 et non plus en dessous de celle-ci. Ceci permet d'éviter que la barrette ne passe à travers la saillie lors de sa mise en place. La barrette illustrée à la figure 10 comporte également un appendice 44 qui s'étend verticalement par rapport à la base de la barrette et qui est situé près de la deuxième extrémité 17. Cet appendice permet de faciliter la manipulation de la barrette. En effet, puisqu'il y a plus de matière présente grâce à l'appendice, une meilleure prise est assurée.The embodiment of the bar 11 illustrated in the figure 10 is distinguished by the presence of the stop 24 on the flexible blade 16 and not more below it. This prevents the bar from passes through the projection when it is put in place. The bar illustrated in Figure 10 also includes an appendage 44 which extends vertically with respect to the base of the bar and which is located near the second end 17. This appendix facilitates the handling of the bar. Indeed, since there is more material present thanks to the appendix, a better grip is ensured.

    Pour engager la barrette selon la figure 2 dans les orifices des saillies, la première extrémité 13 est introduite, par exemple dans la saillie 3, en inclinant la barrette sous un angle d'à peu près 20 à 30° et en la faisant pivoter vers le bord du cadre 2 comme illustré sur la figure 4b. Lorsque la première dent a passé l'orifice, le pivotement provoque que la première dent vient se poser contre la saillie. La barrette est ensuite glissée horizontalement à travers l'orifice en appuyant sur la lame flexible de telle façon à ce que la pointe de la lame flexible puisse pénétrer dans l'orifice. La barrette est glissée à travers cette orifice sur une distance suffisante pour permettre l'engagement de la deuxième extrémité de la barrette dans l'orifice de la saillie 4. La barrette est alors reculée de telle façon à ce que la deuxième extrémité puisse pénétrer dans l'orifice de la deuxième saillie. Le recul de la barrette est arrêté par la première dent qui butte contre la première saillie. Lorsque la barrette est en place dans les saillies, la deuxième dent 14 se trouve dans l'ouverture et la première dent 12 ainsi que la lame flexible se trouvent de part et d'autre de la première saillie fixant ainsi la barrette dans les orifices et la grille contre le cadre.To engage the bar according to Figure 2 in the holes projections, the first end 13 is introduced, for example in the projection 3, by tilting the bar at an angle of approximately 20 to 30 ° and by rotating it towards the edge of the frame 2 as illustrated in the figure 4b. When the first tooth has passed the orifice, the pivoting causes that the first tooth comes to rest against the projection. The bar is then slide horizontally through the hole by pressing the flexible blade so that the tip of the flexible blade can enter the hole. The bar is slid through this hole on sufficient distance to allow engagement of the second end of the bar in the hole in the projection 4. The bar is then moved back so that the second end can penetrate in the opening of the second projection. The recoil of the bar is stopped by the first tooth which abuts against the first projection. When the bar is in place in the projections, the second tooth 14 is in the opening and the first tooth 12 as well as the flexible blade are located on either side of the first projection thus fixing the bar in the holes and the grid against the frame.

    Dans la deuxième forme de réalisation de la barrette illustrée aux figures 3 et 5, la première dent est engagée de même façon que celle décrite au préalable. Comme la lame flexible se trouve à la deuxième extrémité de la barrette elle est engagée dans la deuxième saillie, après que la première dent soit passée à travers la première saillie en la faisant traverser totalement l'orifice de la deuxième saillie. Ainsi la troisième dent 19 et la lame flexible 16 vont se trouver de part et d'autre de la deuxième saillie.In the second embodiment of the bar illustrated in Figures 3 and 5, the first tooth is engaged in the same way than that previously described. As the flexible blade is at the second end of the bar it is engaged in the second protrusion, after the first tooth has passed through the first projection by completely passing it through the orifice of the second projection. Thus the third tooth 19 and the flexible blade 16 will be on either side and on the other side of the second projection.

    Suivant la forme de réalisation illustrée à la figure 7, les deuxièmes saillies de chaque paire présentent chacune une découpe 30 s'étendant sur une partie périphérique de cette deuxième saillie et donnant accès à l'orifice. La découpe de chaque saillie est disposée de telle façon à être orientée vers la périphérie interne du radiant ce qui permet de mieux retenir la grille lors de son montage. De préférence la découpe est en oblique permettant ainsi de suivre l'inclinaison de la grille. Dans cette forme de réalisation il est important que les parties d1 et d2 des barrettes aient des longueurs sensiblement égales pour permettre leur introduction dans les saillies.According to the embodiment illustrated in FIG. 7, the second projections of each pair each have a cutout 30 extending over a peripheral part of this second projection and giving access to the orifice. The cutout of each projection is arranged with so as to be oriented towards the internal periphery of the radiant which allows better retention of the grid during assembly. Preferably the cut is oblique allowing to follow the inclination of the wire rack. In this embodiment it is important that the parts d1 and d2 of the bars have substantially equal lengths for allow their introduction into the projections.

    Ainsi, lorsque l'on engage la deuxième extrémité de la barrette dans l'orifice de la deuxième saillie, la lame flexible se plie légèrement, tandis qu'elle passe dans l'orifice. Une fois passée au-delà de cette orifice, la lame flexible reprend sa forme initiale, de manière à ce que l'extrémité libre de la lame vienne buter contre la deuxième saillie, lorsqu'on essaie de faire revenir la barrette en arrière. Lorsqu'on poursuit l'engagement de la barrette dans les orifices, la première dent vient se mettre contre la première saillie de manière à empêcher la barrette de traverser l'orifice de la première saillie.So when we engage the second end of the bar in the opening of the second projection, the flexible blade bends slightly as it passes through the hole. Once passed beyond from this orifice, the flexible blade returns to its initial shape, so that that the free end of the blade abuts against the second projection, when trying to bring the bar back. When we continue the engagement of the bar in the holes, the first tooth comes put against the first projection so as to prevent the bar from cross the opening of the first projection.

    Ainsi suivant la figure 7, lorsque la deuxième extrémité est engagée dans l'orifice de la deuxième saillie, l'opérateur peut faire pivoter la barrette dans un plan essentiellement parallèle au plan du cadre 1 et placer la barrette en face de la découpe. La section transversale de la barrette à la hauteur de la saillie est agencée pour pouvoir passer dans la découpe et ainsi accéder à l'orifice.Thus according to FIG. 7, when the second end is engaged in the opening of the second projection, the operator can make rotate the bar in a plane essentially parallel to the plane of the frame 1 and place the bar opposite the cutout. The section transverse of the bar at the height of the projection is arranged to be able to pass through the cutout and thus access the orifice.

    La découpe peut se présenter sur les bords périphériques montant de la saillie ou encore s'étendre à partir du dessus de la saillie jusqu'à l'orifice de cette deuxième saillie. Une fois les extrémités de la barrette engagées dans leurs saillies respectives, la barrette sert à appuyer la grille sur le cadre.The cut can occur on the peripheral edges amount of the projection or extend from the top of the projection to the orifice of this second projection. Once the ends of the bar engaged in their respective projections, the bar is used to press the grid on the frame.

    Selon une alternative, la barrette pourrait être résiliante, de cette façon, le pivotement de la deuxième extrémité se ferait par flexion de la barrette par rapport à la première extrémité, engagée dans la première saillie. Une fois la dépression placée en face de la saillie, la barrette revenant à sa forme d'origine pourrait d'elle-même s'engager dans l'orifice de la première saillie via la découpe.According to an alternative, the bar could be resilient, of this way, the pivoting of the second end would be done by bending of the bar relative to the first end, engaged in the first projection. Once the depression is placed in front of the projection, the bar returning to its original shape could engage itself in the opening of the first projection via the cutout.

    Claims (11)

    Radiant pourvu d'un cadre sur lequel au moins une paire de saillies, comprenant chacune une première et une deuxième saillie, sont disposées, les premières et deuxièmes saillies étant chaque fois disposées à distance l'une de l'autre sur un bord longitudinal du cadre, chaque saillie étant pourvue d'un orifice, ledit radiant comprenant également par paire de saillies une barrette mobile ayant une première et une deuxième extrémité situées à l'opposé l'une de l'autre, ladite barrette étant agencée pour que chacune des extrémités puisse être engagée dans un des orifices respectifs, ladite barrette servant à appuyer une grille contre le cadre, caractérisé en ce que la première extrémité de la barrette comporte une première dent dimensionnée de telle façon à pouvoir traverser ledit orifice en faisant pivoter la barrette et à buter contre la saillie lorsque la barrette traverse l'orifice, la barrette comportant également une lame flexible agencée pour limiter le mouvement de la barrette lorsque, en position de fixation de la grille, elle traverse les orifices de la paire de saillies à laquelle elle a été attribuée.Radiant provided with a frame on which at least a pair of protrusions, each comprising a first and a second protrusion, are arranged, the first and second protrusions each being arranged at a distance from each other on a longitudinal edge of the frame, each projection being provided with an orifice, said radiant also comprising, by pair of projections, a movable bar having a first and a second end situated opposite one another, said bar being arranged so that each of the ends can be engaged in one of the respective orifices, said bar serving to support a grid against the frame, characterized in that the first end of the bar has a first tooth dimensioned so as to be able to pass through said orifice by pivoting the bar and to abut against the projection when the bar passes through the orifice, the bar also comprising a flexible blade arranged to limit ter the movement of the bar when, in the grid fixing position, it crosses the orifices of the pair of projections to which it has been assigned. Radiant suivant la revendication 1, caractérisé en ce qu'une deuxième dent juxtapose la première dent, laquelle deuxième dent est dimensionnée pour se situer dans l'orifice lorsque la barrette est dans ladite position de fixation.Radiant according to claim 1, characterized in that a second tooth juxtaposes the first tooth, which second tooth is dimensioned to be located in the orifice when the bar is in said fixing position. Radiant suivant l'une des revendications 1 ou 2, caractérisé en ce que ladite première extrémité comporte une forme arrondie.Radiant according to one of claims 1 or 2, characterized in that said first end has a rounded shape. Radiant suivant l'une des revendications 1 à 3, caractérisé en ce que la première dent et la lame flexible sont appliquées sur une même extrémité de la barrette et s'étendent de part et d'autre de l'orifice lorsque la barrette est dans ladite position de fixation. Radiant according to one of Claims 1 to 3, characterized in that the first tooth and the flexible blade are applied to the same end of the bar and extend on either side of the orifice when the bar is in said fixing position. Radiant suivant l'une des revendications 1 à 3, caractérisé en ce que la lame flexible est située à la deuxième extrémité de la barrette.Radiant according to one of claims 1 to 3, characterized in that the flexible blade is located at the second end of the strip. Radiant suivant la revendication 5, caractérisé en ce que la barrette comporte une troisième dent placée à distance de la lame flexible et située de telle façon à ce que la lame flexible et la troisième dent s'étendent de part et d'autre de la deuxième saillie lorsque la barrette est dans ladite position de fixation.Radiant according to claim 5, characterized in that the bar comprises a third tooth placed at a distance from the flexible blade and situated in such a way that the flexible blade and the third tooth extend on either side of the second projection when the bar is in said fixing position. Radiant suivant la revendication 6, caractérisé en ce qu'une quatrième dent juxtapose la troisième dent, laquelle quatrième dent est dimensionnée pour se situer dans l'orifice lorsque la barrette est dans ladite position de fixation.Radiant according to claim 6, characterized in that a fourth tooth juxtaposes the third tooth, which fourth tooth is dimensioned to be located in the orifice when the bar is in said fixing position. Radiant suivant l'une des revendications 1 à 7, caractérisé en ce que la barrette comporte un arrêt situé soit sous la lame flexible soit sur la lame flexible.Radiant according to one of claims 1 to 7, characterized in that the bar has a stop located either under the flexible blade or on the flexible blade. Radiant suivant l'une des revendications 1 à 8, caractérisé en ce que la grille comporte un bord longitudinal ayant la forme d'une corniche et agencé pour y loger la barrette.Radiant according to one of claims 1 to 8, characterized in that the grid has a longitudinal edge having the shape of a cornice and arranged to accommodate the bar therein. Radiant suivant l'une des revendications 1 à 9, caractérisé en ce que la grille est fixée à une armature qui est posée sur le cadre.Radiant heater according to one of Claims 1 to 9, characterized in that the grid is fixed to a frame which is placed on the frame. Radiant suivant la revendication 10, caractérisé en ce que ladite armature est fabriquée soit en un alliage nichel-chrome soit en fonte, ladite grille étant fabriquée soit en aluminium soit en un alliage à base d'aluminium.Radiant heater according to claim 10, characterized in that said armature is made either of a nichel-chrome alloy or of cast iron, said grid being made either of aluminum or of an alloy based on aluminum.
    EP03077435A 2002-08-02 2003-08-04 Radiant burner Expired - Lifetime EP1387123B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    BE200200466 2002-08-02
    BE2002/0466A BE1015058A3 (en) 2002-08-02 2002-08-02 Radiant.

    Publications (2)

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    EP1387123A1 true EP1387123A1 (en) 2004-02-04
    EP1387123B1 EP1387123B1 (en) 2007-05-16

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    EP03077435A Expired - Lifetime EP1387123B1 (en) 2002-08-02 2003-08-04 Radiant burner

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    EP (1) EP1387123B1 (en)
    AT (1) ATE362599T1 (en)
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    DE (1) DE60313834T2 (en)

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    US6101768A (en) * 1995-09-11 2000-08-15 Springstead; Gary Center supported ventilated raised floor with grated core
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    US5996575A (en) * 1998-02-17 1999-12-07 Heat-N-Glo Fireplace Products, Inc. Low cost prefabricated fireplace with fiber insulation firebox
    US6039039A (en) * 1998-10-21 2000-03-21 Pina, Jr.; Amado Modular outdoor grill with a pivotal food supporting rack
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    US6007329A (en) * 1998-11-16 1999-12-28 Infratech, L.L.C. Emitter apparatus

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    ATE362599T1 (en) 2007-06-15
    DE60313834D1 (en) 2007-06-28
    BE1015058A3 (en) 2004-09-07
    EP1387123B1 (en) 2007-05-16
    US6923644B2 (en) 2005-08-02
    DE60313834T2 (en) 2008-01-24
    US20040191716A1 (en) 2004-09-30

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