EP0209703A2 - Cartouche incandescente pour fours, en particulier pour chaudières ainsi que four avec une telle cartouche - Google Patents

Cartouche incandescente pour fours, en particulier pour chaudières ainsi que four avec une telle cartouche Download PDF

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Publication number
EP0209703A2
EP0209703A2 EP86107889A EP86107889A EP0209703A2 EP 0209703 A2 EP0209703 A2 EP 0209703A2 EP 86107889 A EP86107889 A EP 86107889A EP 86107889 A EP86107889 A EP 86107889A EP 0209703 A2 EP0209703 A2 EP 0209703A2
Authority
EP
European Patent Office
Prior art keywords
pipe section
section
insert
tube piece
annealing
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
EP86107889A
Other languages
German (de)
English (en)
Other versions
EP0209703B1 (fr
EP0209703A3 (en
Inventor
Eduard Wandzel
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.)
WANDZEL, BIRGIT
WANDZEL, CHRISTIAN
WANDZEL, ILSE
Original Assignee
Wandzel Birgit
Wandzel Christian
Wandzel Ilse
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
Priority claimed from DE19853521044 external-priority patent/DE3521044A1/de
Priority claimed from DE19853521043 external-priority patent/DE3521043A1/de
Application filed by Wandzel Birgit, Wandzel Christian, Wandzel Ilse filed Critical Wandzel Birgit
Priority to AT86107889T priority Critical patent/ATE71203T1/de
Publication of EP0209703A2 publication Critical patent/EP0209703A2/fr
Publication of EP0209703A3 publication Critical patent/EP0209703A3/de
Application granted granted Critical
Publication of EP0209703B1 publication Critical patent/EP0209703B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/06—Baffles or deflectors for air or combustion products; Flame shields in fire-boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/09062—Tube-shaped baffles confining the flame

Definitions

  • the invention relates to an annealing insert for furnaces, in particular a heating boiler according to the preamble of claim 1 or to a furnace according to the preamble of claim 10.
  • the object of the present invention is to demonstrate an annealing insert for ovens or heating boilers or an oven with such an annealing insert, which, with simple and inexpensive structural training in comparison with known annealing inserts or ovens, leads to a significantly more favorable heat recovery with regard to the afterburning processes within the Combustion chamber leads.
  • an incandescent heater for furnaces in particular heating boilers or a furnace is designed according to the characterizing part of patent claims 1 and 10.
  • the annealing insert according to the invention or its tube pieces can be produced relatively easily and therefore, above all, also inexpensively from ceramic.
  • an optimal combustion of a liquid, but also gaseous fuel and, above all an optimal afterburning of the not yet burned or only insufficiently burned part of this fuel is achieved, whereby in particular through the inwardly drawn sections of the peripheral wall of the individual pipe pieces, the are formed at the ends of these small-diameter pipes, on the one hand, openings or channels with a large cross-section for the recirculation of air or gases within the combustion or flame area are formed between the pipe sections at their overlap points, and projecting inwards inside the pipe sections Noses or bridges are formed that cause the flame to split, at least around its circumference. cause the flame to build up again at these lugs or in the direction of the flame behind them, so that an intensive "swirling" also occurs within the flame, through which (swirling) the post-combustion processes are significantly improved.
  • the exhaust gases from a furnace or heating boiler equipped with the glow insert contain practically no unburned residues, so that it is possible to design the furnace as a heating boiler so that the combustion chamber is immediate is enclosed by the inner walls of the boiler that receives the heating or process water, with this configuration of the heating boiler the combustion gas (flue gas) is then discharged via a flue gas duct to further increase the efficiency, which is between a thermally insulated outer wall of the heating boiler and the outer walls of the boiler is formed.
  • the annealing insert is preferably used in connection with a forced-air burner for liquid or gaseous fuel, whereby "gaseous fuel” in the broadest sense also means an air-coal dust mixture.
  • gaseous fuel in the broadest sense also means an air-coal dust mixture.
  • the glow insert can also be an integral part of a burner.
  • the number “1” generally designates a heating boiler with a combustion chamber or a combustion chamber 2.
  • the combustion chamber 2 is on the side, ie on its two vertical sides, above and preferably also below and on the back through the boiler 3 which receives the heating or process water or through its inner walls 4, 5 and 6 immediately limited, but the outer surface of the wall 6 is covered with an attachment made of foamed ceramic material.
  • the efficiency is considerably improved simply because the heat generated by the flame 7 of the forced draft burner 8 in the combustion chamber 2 is transferred directly to the boiler 3 or its inner walls 4 and 5.
  • the above-mentioned partition wall can be omitted in the heating boiler 1 because in the combustion chamber 2 there is an annealing insert 9 penetrated by the flame 7 of the forced draft burner 8, which is explained in more detail below and which is used for an almost complete combustion of the fuel supplied to the forced draft burner 8 (preferably oil), so that there is no risk of deposits of unburned components or residues on the walls 4, 5 and 6.
  • the heating boiler 1 has outer walls 10, 11 and 12, which delimit the interior of the heating boiler on the two vertical sides, on the underside, on the top and on the back, these walls also being provided with thermal insulation are arranged so that between the inner surfaces and the outer walls 13, 14 and 15 of the boiler 3 a flue gas or. Exhaust duct 16 is formed, which completely surrounds the boiler 3 and leads to a chimney connection 17 provided in the wall 12.
  • the interior of the heating boiler which houses the combustion chamber 2, the boiler 3 and the flue gas duct 16, is closed off by a front wall 19.
  • the fan burner 8 is also fastened to this front wall, which with a part 8 ′ having the burner nozzle through the front wall 19 into the burner into chamber 2.
  • the arrangement is also such that the inner surface of the front wall 19 is at a distance from the wall sections 20 delimiting the interior of the boiler 3 on the front side, so that the flue gas duct 16 continues or flows between these wall sections 20 and the inner surface of the front wall 19 into the combustion chamber 2 is connected to the combustion chamber 2 in the area between the wall sections 20 and the inner surface of the front wall 19.
  • the direction of flow of the hot combustion gases flowing around the boiler 3 on the inside and outside is indicated by the arrows A in FIG. 1.
  • the glow insert 9 made of ceramic or ceramic material is shown in detail in FIGS. 2-5.
  • this annealing insert consists of three rings or tube pieces 21a, 21b and 21c made of ceramic, both of which are open at both ends and which are frustoconical on their peripheral wall 22, i.e. are designed such that each pipe section has an essentially circular cross section with the larger diameter D at one end and a maximum cross section with the smaller diameter d at the other end.
  • the information “D” and “d” each relate to the inner cross section, which differs from the associated outer cross section in each case by the double wall thickness of the peripheral wall 22.
  • the glow insert 9 consisting of the three pipe sections 21a, 21b and 21c is arranged in the combustion chamber 2 such that all pipe sections lie in the same axis and in the same axis as the flame 7 and are also arranged in such a way that for each pipe section the end with the larger diameter D is closer to the forced draft burner 8 or its nozzle than the end with the smaller diameter d.
  • the pipe sections 21a, 21b and 21c are further arranged relative to one another in such a way that the pipe section closest to the forced draft burner 8 21a with its end with the diameter d extends into the end with the larger diameter D of the pipe section 21b, which follows the pipe section 21a with increasing distance from the fan burner 8. Furthermore, the pipe section 21b extends with its end with a smaller diameter d into the end with a larger diameter D of the pipe section 21c, which follows the pipe section 21b at a greater distance from the fan burner 8.
  • the diameters D and d of the pipe sections 21a, 21b and 21c are matched to one another in such a way that where the pipe section 21a extends into the pipe section 21b and the pipe section 21b into the pipe section 21c, annular gaps 23 are formed between the intermeshing pipe sections are.
  • annular gaps 23 are formed between the intermeshing pipe sections are.
  • at least the pipe sections 21a and 21b are provided with an inwardly extending flange 24 at least in the region of the annular gaps 23 (Fig.
  • the peripheral wall 22 of at least the tube pieces 21a and 21b is shaped or pulled inwards in some areas in such a way that on its outer surface they are three uniformly offset about the longitudinal axis L of the glow insert 9, in the direction of Forming longitudinal axis L and approximately V-shaped channels in cross section, which are open to the outer surface of the peripheral wall 22 and to the end with the smaller diameter d.
  • the maximum height of the lugs formed by the channels 25 is approximately in the range from 1/4 d to 1/6 d.
  • the lugs generated by the bridges 22 and reaching into the interior of the pipe sections result in a division of the flame 7 at least in its edge region, with a corresponding displacement of the lugs formed by the bridges 22 'about the longitudinal axis L from pipe section to pipe section multiple deflection of the flame 7 on its outer areas and thus a certain turbulence in the flame are forced, which also increases a significant improvement in the combustion process, in particular also the components of the liquid fuel which hit the surfaces of the hot pipe sections 21a, 21b and 21c and are vaporized there and were not yet or insufficiently burned.
  • the pipe section 21c also preferably has the lugs formed by the bridges 22 ', the flanges or flange sections 24 then also being provided on this pipe section, at least in the region between the three bridges 22'.
  • the diameters D and d of the pipe sections are selected such that the annular gaps 23 have a width of approximately 9 mm in the direction radial to the longitudinal axis L.
  • the pipe sections 21a, 21b and 21c are designed with respect to their diameter D and d in accordance with the table below, so that the average cross section of the glow insert remains the same from the end facing the blower burner 8 to the end facing away from the blower burner 8.
  • the individual tube pieces 21a, 21b and 21c can be attached to one another in a different manner or sequence than shown in FIG. 2, or that more than three or less than three pieces of pipe can be connected to each other for the glow insert, depending on the performance, the size and design of the combustion chamber, the pump pressure for the liquid fuel and the spray angle of the nozzle of the forced draft burner 8.
  • the annular gap can also be dependent on the above-mentioned influencing variables may be larger or smaller than specified, the diameter D also increasing in the case of a larger annular gap, so that as the distance from the fan burner increases, the cross-section for the annealing insert becomes larger and larger.
  • the number (N) of bridges 22 ' can also be different for the individual pipe sections, as indicated in row N in the table above.
  • the individual pipe sections 21a, 21b and 21c are connected to one another or held together in that angular elements made of corrosion-resistant and heat-resistant material (for example stainless steel) are fastened to the outer surface of the peripheral wall 22 of these pipe sections with a leg, the other leg of which has a bore. Threaded rods, which carry nuts 28, are passed through these bores of the angle elements 26, each angle element 26 or its leg protruding from the peripheral surface of the pipe piece in question being firmly clamped between two nuts 28.
  • This is not only a particularly simple and effective Attachment of the pipe pieces 21a, 21b and 21c reached, but also given the possibility of an accurate position adjustment of the individual pipe pieces relative to each other.
  • FIG. 6 shows a type of fastening for the pipe sections 21a, 21b and 21c to one another which differs from FIG.
  • the tube pieces are provided at their ends, each having the larger diameter D, with a flange 29 projecting radially outward beyond the outer peripheral surface.
  • a roughly Z-shaped strip 30 made of corrosion-resistant material (stainless steel) is used for fastening.
  • One leg (30 ') lies against the inner surface of the pipe section in question.
  • the flange 29 is surrounded on the outside by a U-shaped bracket 31 made of corrosion-resistant flat material (stainless steel), one leg of which is connected with the aid of a screw 32 to the central section 30 "of the strip 30, so that the tube piece in the region of the flange 29 between the leg 30 'and the bracket 31.
  • the other leg of the strip 30 is held by means of a screw 33 on a perforated plate 34 to which several similar fastening devices of the type described above are fastened for all three pipe sections 21a, 21b and 21c It goes without saying that several fastening devices (each consisting of perforated plate 34, strip 30 and bracket 31) are provided offset about the longitudinal axis L.
  • the individual perforated plates 34 are separated by several Cross webs, not shown, which run transversely or perpendicular to this axis are connected to one another to form a frame or cage n.
  • the perforated plates 34 each of which has a plurality of holes for the screws 33 in the longitudinal extension, it is possible to choose the arrangement of the individual tube pieces 21a, 21b and 21c to suit the respective requirements.
  • the ring 35 of the embodiment of FIGS. 7 to 10 differs from the rings 21a, 21b and 21c essentially only in that the frustoconical peripheral wall 36 in the region of the open side with the larger diameter D in a circular cylindrical peripheral wall section 37 with the inner diameter D. passes, which then has at the open end of the ring 35 a radially outwardly extending annular flange 38 '.
  • the formation of the rings 35 allows a particularly simple way of attaching these rings.
  • retaining brackets 39 are fastened, which are U-shaped and each have two legs 39 'and a yoke section 39''connecting these two legs, the both legs 39 'of each retaining bracket 39 projecting above the top of the base 38 are at a greater distance from one another at their upper free ends than in the region of the base 38 or of the yoke section 39 ′′ resting on the base 38 and fastened there.
  • a U-shaped or bow-shaped holding clip 40 is also made of flat material, each of which has two legs 40' and one of these legs together connecting yoke section 40 ".
  • the two holding clips 40 of each holding element 39 are fastened to the legs 39 'in such a way that each yoke section 40" lies flat against one of the facing surface sides of the legs 39' and is held there in a suitable manner while the legs 40 'of the two holding clips 40 protrude beyond the mutually facing surface sides of the legs 39 '.
  • each holding clip 40 are in turn shaped such that the two legs 40' are at a greater distance from one another at their free end than in the area of the yoke piece 40 ". At the free ends, the legs 40 'have each holding clip 40 towards one another This end open recess 41, wherein each recess 41, the flange 38 'of a ring 35 engages, so each ring 35 in the region of its flange 38' by a total of four legs 40 'of the two retaining clip 40 is gripped and held with it
  • the arrangement is also such that the free end of the respective upper leg 40 'of each retaining clip 40 lies above a horizontal plane including the longitudinal axis L of the ring 35 and the free end of the respective lower leg 40' of each retaining clip 40 lies below this level that each ring by the two retaining clips 40 in the longitudinal direction and in a direction perpendicular thereto, in particular also in the vertical direction is held positively by the holding element 39 with the two holding clips 40.
  • an angular holding element 42 is provided, one of which angled leg 42 'rests on the yoke section 39 "and is fastened there, and the other angled leg 42''' of which protrudes vertically above the yoke section 39 'of each holding element 39 and has one at its upper, free end has a recess corresponding to the recess 41 and also receiving the flange 38.
  • an additional holding clamp 40 can also be provided in each case.
  • a tab 43 is provided on each leg 39' of each retaining element 39, each tab 43 projecting vertically beyond the surface side of the leg 39 'facing away from the adjacent retaining clip 40 and a bore 44 has.
  • the tabs 43 with the holes 44 correspond in their function to the angle members 26 of Fig. 2, ie over the tabs 43 may be a plurality of rings 35 and 39 in their retaining elements' longitudinal direction L of Glühstedes by the in the threaded rods 27 engaging the bores 44 are connected to one another using the nuts 28.
  • this longitudinal connection of the rings 35 or their holding elements 39 is also possible in a different way, for example in that instead of the tabs 43 and the threaded rods 27 longitudinal connecting elements, for example in the form of the perforated plates 34 and 34 'are used, which in each case are attached to the legs 39 'of the holding elements 39.
  • the ring 45 consists of three parts or ring segments 45 ′′, 45 ′′ and 45 ′′ ′′, each of the ring segments shown in FIG. 11 having an inwardly drawn nose-like partial area 22 ′.
  • the ring 45 is similar to that Ring 35 is designed in such a way that at its end with the larger diameter it has at least on its outer surface a partial area 46 on which the outer surface of ring 45 is designed in the shape of a circular cylinder.
  • ring 45 at its end with the larger diameter has a radially outward direction projecting flange 47, which corresponds to the flange 38 'of the ring 35, so that the holding elements 39 can also be used for the rings 45.
  • the Sub-area 46 a two-part strap 48 passed around, which is of course also made of heat-resistant material.
  • the ends of the two-part tensioning strap 48 are connected to one another by suitable tensioning means, for example screws 49, in such a way that the tensioning strap 48 is pressed against the partial area 46 and thereby holds the segments 45 ', 45 "and 45"”together to form the ring 45
  • suitable tensioning means for example screws 49
  • a plurality of securing pins 50 are also provided on the flange 47, which protrude beyond the surface side of the flange 47 facing the partial area 46, so that in the area of each safety device approximately pin 50 the strap 48 is located between this pin and the portion 46, as in the F ig. 12 is shown.
  • elements 51 can also be fastened to the tightening strap 48 of each ring 45, which elements extend in the longitudinal direction of the glow insert formed by a plurality of rings 45 and thereby a longitudinal connection between them Make rings. These elements 51 therefore correspond in their function to the threaded rods 27 or the perforated plates 34.
  • the element 31 not as a U-shaped bracket but as a Z-shaped element, in which case the leg resting on the section 30 ′′ points upward, such as This is indicated by broken lines in FIG. 6 at 31 ', thereby simplifying the fastening with the aid of the screw 32, since then no threaded hole which is difficult to produce is required in the element 31 made of corrosion-resistant material, but only a simple hole In this case, the screw 32 is held by a threaded nut.
  • the inner surfaces of the tube pieces 21a, 21b and 21c enclose an angle of about 6 ° with the longitudinal axis L, this angle depending on the diameter d and the length or height of the rings and smaller Diameter d can be larger and d can be smaller in the case of a larger diameter, and the tube pieces are frustoconical over their entire length on the inner surface.
  • This configuration has the advantage that there is a greater thickness for the peripheral wall 22 and thus a greater strength in the region of the ends with a larger diameter, which can be of particular importance in the type of fastening shown in FIG. 6. Furthermore, there is the advantage of the cylindrical or annular sections 22 that in the lower part of the glow insert there is a horizontal collecting surface for such unburned fuel on the entry side of each tube piece that could not yet evaporate on the glow insert. This collecting surface effectively prevents fuel from dripping down from the glow insert.

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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)
  • Resistance Heating (AREA)
  • Discharge Heating (AREA)
EP86107889A 1985-06-12 1986-06-10 Cartouche incandescente pour fours, en particulier pour chaudières ainsi que four avec une telle cartouche Expired - Lifetime EP0209703B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86107889T ATE71203T1 (de) 1985-06-12 1986-06-10 Glueheinsatz fuer oefen, insbesondere heizungskessel, sowie ofen mit einem derartigen glueheinsatz.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19853521044 DE3521044A1 (de) 1985-06-12 1985-06-12 Glueheinsatz fuer oefen, insbesondere heizungskessel
DE3521043 1985-06-12
DE19853521043 DE3521043A1 (de) 1985-06-12 1985-06-12 Ofen, insbesondere heizungskessel
DE3521044 1985-06-12

Publications (3)

Publication Number Publication Date
EP0209703A2 true EP0209703A2 (fr) 1987-01-28
EP0209703A3 EP0209703A3 (en) 1988-08-03
EP0209703B1 EP0209703B1 (fr) 1992-01-02

Family

ID=25833056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107889A Expired - Lifetime EP0209703B1 (fr) 1985-06-12 1986-06-10 Cartouche incandescente pour fours, en particulier pour chaudières ainsi que four avec une telle cartouche

Country Status (3)

Country Link
EP (1) EP0209703B1 (fr)
AT (1) ATE71203T1 (fr)
DE (1) DE3683203D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35952E (en) * 1989-05-31 1998-11-10 Beery; Jack Television receiver having memory control for tune-by-label feature
EP1748264A1 (fr) * 2005-07-29 2007-01-31 Frisquet SA Chaudière comportant un assemblage d'éléments directeurs de fumée
US8277214B2 (en) 2009-05-04 2012-10-02 Burn Booster Oy Device for intensifying a flame

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2612051A1 (de) * 1976-03-22 1977-10-06 Walter Boehmer Oelflamm-nachbrenner fuer oelheizungsanlagen
FR2505983A1 (fr) * 1981-05-13 1982-11-19 Jean Lamy Appareil deflecteur pour ameliorer la qualite de la combustion fournie par un bruleur, notamment pour une chaudiere ou analogue
DE3232971A1 (de) * 1982-09-04 1984-03-08 Stettner & Co, 8560 Lauf Einsatz fuer oefen oder heizkessel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2612051A1 (de) * 1976-03-22 1977-10-06 Walter Boehmer Oelflamm-nachbrenner fuer oelheizungsanlagen
FR2505983A1 (fr) * 1981-05-13 1982-11-19 Jean Lamy Appareil deflecteur pour ameliorer la qualite de la combustion fournie par un bruleur, notamment pour une chaudiere ou analogue
DE3232971A1 (de) * 1982-09-04 1984-03-08 Stettner & Co, 8560 Lauf Einsatz fuer oefen oder heizkessel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35952E (en) * 1989-05-31 1998-11-10 Beery; Jack Television receiver having memory control for tune-by-label feature
EP1748264A1 (fr) * 2005-07-29 2007-01-31 Frisquet SA Chaudière comportant un assemblage d'éléments directeurs de fumée
FR2889295A1 (fr) * 2005-07-29 2007-02-02 Frisquet Sa Sa Chaudiere comportant un assemblage d'elements directeurs de fumee
US8277214B2 (en) 2009-05-04 2012-10-02 Burn Booster Oy Device for intensifying a flame

Also Published As

Publication number Publication date
EP0209703B1 (fr) 1992-01-02
DE3683203D1 (de) 1992-02-13
ATE71203T1 (de) 1992-01-15
EP0209703A3 (en) 1988-08-03

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