EP1387123A1 - Strahlungsbrenner - Google Patents

Strahlungsbrenner 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
English (en)
French (fr)
Other versions
EP1387123B1 (de
Inventor
Daniel Lavigne
Koen Van Overbeke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
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 EP1387123A1 publication Critical patent/EP1387123A1/de
Application granted granted Critical
Publication of EP1387123B1 publication Critical patent/EP1387123B1/de
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.

Landscapes

  • 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)
  • Gas Burners (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
EP03077435A 2002-08-02 2003-08-04 Strahlungsbrenner Expired - Lifetime EP1387123B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
EP1387123A1 true EP1387123A1 (de) 2004-02-04
EP1387123B1 EP1387123B1 (de) 2007-05-16

Family

ID=30005468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03077435A Expired - Lifetime EP1387123B1 (de) 2002-08-02 2003-08-04 Strahlungsbrenner

Country Status (5)

Country Link
US (1) US6923644B2 (de)
EP (1) EP1387123B1 (de)
AT (1) ATE362599T1 (de)
BE (1) BE1015058A3 (de)
DE (1) DE60313834T2 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274006A (de) *
US5820361A (en) * 1997-07-14 1998-10-13 Innovative Drying Systems Heat emitter
US6007329A (en) * 1998-11-16 1999-12-28 Infratech, L.L.C. Emitter apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829158A (en) * 1988-01-06 1989-05-09 Sunbeam Corporation Portable electric oven utilizing recirculating high speed air for cooking
US6101768A (en) * 1995-09-11 2000-08-15 Springstead; Gary Center supported ventilated raised floor with grated core
US6012380A (en) * 1997-06-16 2000-01-11 Hermansson; A.E. Cooking grill
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
US6201181B1 (en) * 1998-12-08 2001-03-13 Ase Americas, Inc. Portable solar module cart
US6190162B1 (en) * 1999-02-11 2001-02-20 Marsden, Inc. Infrared heater and components thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL274006A (de) *
US5820361A (en) * 1997-07-14 1998-10-13 Innovative Drying Systems Heat emitter
US6007329A (en) * 1998-11-16 1999-12-28 Infratech, L.L.C. Emitter apparatus

Also Published As

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

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