EP0949452A2 - Brûleur radiant - Google Patents

Brûleur radiant Download PDF

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Publication number
EP0949452A2
EP0949452A2 EP99106733A EP99106733A EP0949452A2 EP 0949452 A2 EP0949452 A2 EP 0949452A2 EP 99106733 A EP99106733 A EP 99106733A EP 99106733 A EP99106733 A EP 99106733A EP 0949452 A2 EP0949452 A2 EP 0949452A2
Authority
EP
European Patent Office
Prior art keywords
frame
radiation
plate
burner
housing
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.)
Withdrawn
Application number
EP99106733A
Other languages
German (de)
English (en)
Other versions
EP0949452A3 (fr
Inventor
Rainer Otminghaus
Franz Widera
Konrad Weber
Peter Derksen
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.)
Schwank GmbH
Original Assignee
Schwank GmbH
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 Schwank GmbH filed Critical Schwank GmbH
Publication of EP0949452A2 publication Critical patent/EP0949452A2/fr
Publication of EP0949452A3 publication Critical patent/EP0949452A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • F23D14/825—Preventing flashback or blowback using valves
    • 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
    • F23D14/147—Radiant burners using screens or perforated plates with perforated plates as radiation intensifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—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
    • F23D2212/00—Burner material specifications
    • F23D2212/10—Burner material specifications ceramic
    • 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 burner for the combustion of gas or vaporous fuel-air mixtures consisting of one with one Fuel-air supply line connected, a mixture space at least on one side final housing one, arranged on the underside of the housing preferably ceramic burner plate and one at a distance from the burner plate arranged pre-blasting element.
  • EP 0 230 797 B1 discloses a radiant burner incorporating a Pre-radiation element and at least one radiation plate, which by a peripheral band is wrapped, which is connected to a body that a premixing chamber of the burner limited. Furthermore, this radiant burner has a ceramic frame that has an inner edge structure that it allows to take the edge of the screen. The screen forms together with the radiation plate a combustion chamber surrounded by all metallic parts is insulated. The ceramic frame is in this radiant burner supported against an upper flange of the belt, which is connected to the body by an elastic system. Accordingly, at this radiant burner provided that on the housing forming Body the radiation plate is fixed. A holder that can be moved relative to the body carries the ceramic frame in which the pre-blasting element is relative to Body is movably supported.
  • a burner plate used in the radiation burner according to EP 0 230 797 B1 is known for example from EP 0 106 761 B1.
  • This burner plate consists of a ceramic material with openings for the Oxygen carrier fuel mixture.
  • the passage openings are in the plate evenly formed and in absolutely homogeneous form in parallel rows staggered, the distance between two openings always is the same and forms a system of regular hexagonal cells.
  • DE 31 40 700 A1 describes a gas radiation burner with a built-in one known electrical heating elements.
  • This gas radiant burner consists of a gas heater and an electrical resistance heater, which are combined to form a heat radiation emitter element and an anti-convection agent on the front of the burner.
  • the heat radiation emitter element consists of a porous or perforated plate made of heat-resistant material, especially a metal.
  • the object of the invention is to further develop a generic radiation burner in such a way that the pre-radiation element has a longer service life and its shape can be adapted.
  • the pre-blasting element is made of essentially ceramic material.
  • the pre-blasting element made of ceramic Material is formed.
  • the use of ceramic material for the pre-radiation element has the particular advantage that the pre-radiation element has a significantly longer lifespan. Since the pre-radiation element in such Radiation burners are to be regarded as a wear element Design longer maintenance intervals achieved. Extending the lifespan is due to the fact that the ceramic radiation element a higher mechanical strength, a lower thermal expansion as well a shorter cooling characteristic compared to pre-blasting elements made of metallic Materials. In addition, ceramic materials are opposed metallic materials easier to process, so that in particular a flexible design with regard to the design of the pre-blasting element is made possible.
  • the pre-radiation element in a holder at a certain distance from the burner plate is arranged, the holder preferably thermally from the housing and / or a frame for the burner plate is decoupled. Through this An additional heat is coupled into the pre-radiation element via the bracket, which is usually made of metallic material, prevented. In addition, the specific distance between the The burner plate and the pre-radiation element achieve optimal heat emission.
  • the ceramic material of the pre-radiation element preferably has one Long-term temperature resistance of more than 1100 ° C.
  • the pre-radiation element made of codierite.
  • Codierite consists in particular of the natural raw materials diatomaceous earth, kaolin, clay and talc with the mineralogical Main components aluminum silicate and magnesium silicate.
  • pre-blasting element with a honeycomb shape Form structure so that the pre-radiation element in essential parts is designed as a cell grid.
  • shape for the structure of the pre-blasting element for example the Shape of a perforated plate, the shape of lamellas, rods or pressed molded parts.
  • the cell grid of the pre-radiation element consequently has channels whose Widths according to another feature of the invention between 1 and 10 mm be. Webs are arranged between the channels, which are preferably are between 0.2 and 2 mm wide.
  • the holder for the pre-radiation element is on the frame for the burner plate arranged, which is at a constant distance from the burner plate is supported.
  • the bracket is releasably attached to the frame, so that the pre-blasting element, which is designed as a wearing part, in simple Way can be exchanged.
  • the bracket with just a few support points and fasteners to fix on the frame for the burner plate.
  • the advantages of this design are that the frame of the burner is essentially of the holder for the pre-radiation element is thermally decoupled, so that there is a reduced temperature input from the frame for the burner comes into the holder of the pre-radiation element.
  • the housing and the frame energy store are between the housing and the frame energy store provided that a movement of the frame relative to the housing, with the burner plate on the frame Housing is clamped.
  • the burner plate on the housing and pressing the burner plate by means of the energy accumulator becomes one permanent sealing connection between the burner plate and the housing provided so that the mixture space from the bell-shaped Housing on the one hand and the burner plate on the other hand is formed.
  • Yourself Expansion of different materials with different coefficients of thermal expansion can by such an inventive design be balanced. This also applies in the event of thermal shock.
  • the easily accessible energy store and the simple one constructive structure of the radiation burner according to the invention provides in addition for easy assembly or disassembly, provided that maintenance work is carried out are necessary within the mixture space.
  • the Mixing room is thermally decoupled from the other components.
  • the elastic connecting elements are designed as compression springs that are biased between the Frame and the housing are arranged.
  • This sealing element can, for example, the Expansion of the different materials of the components due to their different Compensate for thermal expansion coefficients.
  • a holder for a pre-radiation element is arranged on the frame is held at a constant distance from the burner plate.
  • the Bracket releasably attached to the frame so that the pre-radiation element, which is designed as a wearing part, can be replaced in a simple manner can.
  • the advantages of this configuration are that the scope of the Essentially thermally from the holder for the pre-radiation element is decoupled so that there is a reduced temperature input from the frame for the burner into the holder of the pre-radiation element is coming.
  • Burner to be dismantled or to be mounted on this is a separate component created, which is easy to replace when servicing enables both the holder and the pre-blasting element.
  • a shut-off device provided, between a closure element and a trigger element there is no direct connection to trigger the shut-off device must dissolve.
  • the trigger element as an actuating element, namely as one in the event of a temperature increase, which in usually accompanied by a flashback, increasing their volume Mass is formed. If a certain temperature is therefore in the radiant burner, that is, exceeded in the area of the triggering element the trigger element tends to increase its volume, creating a force is transmitted to the connecting element, the closure element in such a way actuates that the inlet opening, in particular the nozzle with the closure element is closed.
  • the trigger element is arranged in a receptacle, the directional volume increase the trigger element ensures.
  • This recording can, for example be cup-shaped and a correspondingly designed trigger element, which is, for example, cylindrical, so that a volume increase of the trigger element only in the direction of the only one open side of the recording is possible.
  • closure element is plate-shaped and round. It is also provided that the connecting element is rod-shaped with a round cross section is. This configuration has the advantage of a structurally simple training the shut-off device.
  • the rod-shaped connecting element is preferably in a frame arranged and movable relative to the frame, the frame in one Mixing tube of the radiant burner is supported. It can be provided that the frame is detachably arranged in the mixing tube. But there is also Possibility to connect the frame firmly to the mixing tube, as it is in the Shut-off device according to the invention is not necessary, the frame after the triggering of the trigger element in the course of maintenance of the radiant burner exchange. Rather, it can be seen that after dismantling the Mixing tube from the housing of the radiation burner in the trigger element Be replaced with a new trigger element during maintenance can without the frame or the connecting element with the closure element to be dismantled. This will make it a significant simplification maintenance of the radiant burner in this area.
  • the connecting element on its facing away from the closure element and the trigger element facing end has a plate and that between the Plate and the frame an energy accumulator, preferably in the form of a compression spring is arranged, the connecting element relative to the frame on the Release element presses.
  • the arrangement of the plate which is preferred has a diameter that corresponds, for example, to the diameter of one corresponds to a trigger element of circular cross section, ensures that an immediate displacement of the connecting element also occurs when the volume increase is due to the material begins in a certain area of the trigger element and only gradually spreads over the entire trigger element.
  • the stroke that can be achieved by increasing the volume of the trigger element Connecting element is preferably larger than the distance between the Closure element and the nozzle to be closed. This ensures that the closing process is also triggered and completed, if the volume increase of the trigger element is not fully executed becomes.
  • the trigger element is preferably in the mixture space of the Radiation burner in the immediate vicinity of a connection opening for the Mixing tube arranged. This configuration has the advantage that the maintenance the shut-off device after disassembly of the mixing tube in a simple manner due to the good accessibility of the components to be serviced.
  • the receptacle and / or the triggering element is / are preferably detachable arranged in the mixing room. This allows both the recording alone and also the trigger element can be replaced independently. It but there is also the possibility of recording together with the trigger element disassemble from the mixture chamber to counter these components exchange new components. This advantage is particularly evident if after actuation of the trigger element this increases its volume in this way has that it is stuck in the holder and without special tools cannot be solved without residues, so that the installation of a new one Tripping element could take place improperly, so that security the shut-off device due to an incorrectly installed release element is impaired.
  • the mixing tube is releasably attached to the housing of the radiant burner, so that the shut-off device is easily accessible.
  • a radiation burner 1 shown in FIG. 1 for the combustion of gaseous gases consists of a housing 2, which is funnel-shaped is formed with a trapezoidal cross section.
  • the housing 2 has a side wall 3, which widens starting from a head region 4 extends into a web area 5.
  • the housing has an opening 6, to which an intermediate layer is provided a seal 7 a fuel-air supply line 8 detachably connected is.
  • the housing 2 defines a mixture chamber 9 in which a baffle plate 10 is inserted which is located between opposite side walls 3 of the housing 2 extends.
  • the mixture chamber 9 is in the area of the webs 5 of the Housing 2 limited by a burner plate 11, the interposition of a Seal 12 is supported on the webs 5 of the housing 2.
  • the burner plate 11 is held in a frame 13 which the housing 2 in essentially encloses without lying directly on the housing 2, so that the frame 13 is decoupled thermally from the housing 2 in a simple manner is.
  • the frame 13 is U-shaped in cross section and has in its, its web 16 connecting the two legs 14, 15 has an opening 17, which serves as a passage for the heat-emitting side of the burner plate 11.
  • the burner plate 11 thus rests on short sections of the web 16, which is formed all around in the frame 13.
  • the frame 13 has in its end region facing away from the burner plate 11 a plurality of openings 18, which are designed as sheet metal squeezes.
  • openings 18 L-shaped profile elements 19 are inserted such that a Leg of the profile pieces parallel to the legs 14 and 15 and a Leg of each profile piece 19 is perpendicular to the legs 14 and 15 respectively.
  • a hole for receiving a bolt 20 In each of these second legs there is a hole for receiving a bolt 20 arranged.
  • the profile pieces 19 are inserted into the openings 18 such that they are parallel to the legs 14 and 15 of the frame 13 are slidably disposed and at the same time support themselves against the frame 13 with their first bar.
  • the bolts 20 extend substantially from the second leg of the Profile pieces 19 up to the web area 5 of the housing 2, being provided can that between the web areas 5 and the bolt head 21, an insulating element is arranged, the Bolzano 20 thermally from the housing 2nd separates.
  • Prestressed compression spring 22 is arranged which the frame in the direction of the burner plate 11 moves so that the burner plate 11 over the frame 13 permanently sealing on the seal 12 between the burner plate 11 and the housing 2 is pressed. It is particularly important here that the Housing 2 is thermally decoupled from the frame 13.
  • a bracket 23 is releasably attached on the outside of the frame 13.
  • the Bracket 23 is used to arrange a pre-radiation element 24 at a distance from Burner plate 11. Accordingly, which has substantially the same Contour of the frame 13 trained bracket a receptacle 25 for the Vorstrahlelement on, which will be described below.
  • This recording 25 consists of web elements protruding into the interior of the holder 23 26 together with a web 27 between two legs 28 and 29 of the holder 23 are arranged and the fixation of the pre-radiation element 24 serve.
  • bracket 23 At their free ends, the legs 28 and 29 each point in the direction on the interior of the bracket 23 bent clip 30.
  • This Clip devices 30 act to attach the bracket 23 to the frame 13 together with webs 31 projecting into the interior of the holder 23, so that the bracket 23 can be easily mounted on the frame 13.
  • the bracket 23 is thus thermally from the elements to be heated of the radiation burner 1 decoupled.
  • the pre-radiation element 24 leaves by simply attaching the bracket 23 to the frame 13 as a separate When servicing, replace the component in a simple manner.
  • the pre-blasting element 24 as a wearing part is trained.
  • the pre-blasting element 24 is designed as a ceramic plate element. Of the Distance between the inside of the pre-radiation element 24 and the radiating Side of the burner plate 11 is between 2 and 20 mm. The long-term temperature resistance of the ceramic pre-blasting element 24 lies clearly higher than 1100 ° C.
  • the pre-radiation element 24 can have a honeycomb structure. It is but also possible that the structure of the pre-radiation element 24 as a perforated plate, is designed as lamellae, as rods or in the form of pressed molded parts.
  • the clear channel width of the individual cell grids is in Figure 2 with the dimension A-A specified and is between 1 and 10 mm.
  • Codierite for example, can be used as the ceramic material for the pre-radiation element 24 with a plate thickness, which is shown in Figure 3 with the dimension C-C, of 1 up to 10 mm can be used.
  • the pre-radiation element 24 can be formed in one or more parts and has in addition to its high temperature resistance, the advantages of a longer service life compared to steel blasting elements, a higher mechanical Strength, minimal thermal expansion, flexible shaping as well shorter cooling characteristics.
  • the mixing tube 8 instructs its end opposite the housing 2 is a nozzle 31 Inlet opening for the gas on.
  • the nozzle 31 is with its inflow opening aligned in the longitudinal direction of the mixing tube 8 and centrally in the mixing tube 8 arranged.
  • a second access opening 33 for air is arranged, so that the Nozzle 31 flowing gas in the area of the nozzle 31 with the via the access opening 33 inflowing air mixed into a combustible gas-air mixture.
  • This gas-air mixture flows through the mixing tube 8 into a mixture space 9.
  • the mixing tube 8 In the mixing tube 8 is a frame 18 made of a U-shaped wire used, the frame 18 two legs and one connecting the legs Web, which legs frictionally on the inner wall of the mixing tube 8.
  • the web is provided in the area of the mixing space 9.
  • the frame 18 can be firmly connected to the mixing tube 8, since it is too Maintenance purposes does not have to be removed from the mixing tube 8.
  • the web of the frame 18 arranged in the mixing chamber 9 has in its Middle of a hole through which a rod-shaped connecting element 19 is guided such that it is relative to the frame 18 in the longitudinal direction is movable.
  • the connecting element 18 is also in a crosspiece 20 guided, which crossbar 20 on both sides of one leg of the frame 18 is connected.
  • the connecting element 19 has at its end facing the nozzle 31 a plate-shaped closure element 21.
  • the closure element 21 is as Round plate formed and in the operating state of the radiant burner 1 in held a certain distance from the opening of the nozzle 31.
  • the connecting element 19 has one another round plate 22 on.
  • the connecting element extends in this area 19 over the web of the frame 18 into the mixture chamber 9, wherein between the plate 22 and the web of the frame 18 a preloaded spring 34 is arranged, which presses the connecting element 19 into a receptacle 35.
  • the receptacle 35 is cup-shaped and can be detached with its base region attached to the baffle 10.
  • a trigger element 36 is in this receptacle 35 used, which is designed according to the inner contour of the receptacle 35.
  • This trigger element 36 consists of a volume when the temperature rises magnifying mass.
  • the trigger element 36 is between the Bottom region of the receptacle 35 and the plate 22 on the connecting element 19 arranged, the plate 22 via the spring 34 on the trigger element 36th is pressed.
  • the distance between the plate-shaped closure element 21 and the exit opening the nozzle 31 is dimensioned smaller than the stroke of the trigger element 36 which increases as the temperature rises.
  • the mixing tube 8 is made ready for use together with the frame 18 disassembled from the housing 2, so that the receptacle 35 with the then a larger one Volume-taking trigger element 36 is accessible.
  • the recording 35 is after disassembly of the mixing tube 8 together with the trigger element 36 removed from the mixture chamber 9 and by a new recording 35 replaced with a new trigger element 36.
  • the plate 22 in the receptacle 35 is inserted and comes to rest on the trigger element 36.
  • the spring 34 is biased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP99106733A 1998-04-08 1999-04-03 Brûleur radiant Withdrawn EP0949452A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19815785A DE19815785A1 (de) 1998-04-08 1998-04-08 Strahlungsbrenner
DE19815785 1998-04-08

Publications (2)

Publication Number Publication Date
EP0949452A2 true EP0949452A2 (fr) 1999-10-13
EP0949452A3 EP0949452A3 (fr) 2000-09-20

Family

ID=7864021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99106733A Withdrawn EP0949452A3 (fr) 1998-04-08 1999-04-03 Brûleur radiant

Country Status (2)

Country Link
EP (1) EP0949452A3 (fr)
DE (1) DE19815785A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004010050A1 (fr) * 2002-07-19 2004-01-29 Shell Internationale Research Maatschappij B.V. Procede de combustion d'un hydrocarbure liquide
WO2014005751A3 (fr) * 2012-07-03 2014-02-27 Ulrich Dreizler Brûleur à système de combustion superficielle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10237529A1 (de) * 2002-08-16 2004-02-26 Voith Paper Patent Gmbh Infrarot-Strahler und mechanische Abschalteinrichtung hierfür

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140700A1 (de) 1980-10-15 1982-08-19 Solaronics Vaneecke, 59280 Armentieres Gasstrahlungsbrenner mit eingebauten elektrischen heizelementen
EP0106761A1 (fr) 1982-10-11 1984-04-25 Solaronics Vaneecke Plaquette à face rayonnante alvéolée pour brûleur radiant
EP0230797A1 (fr) 1985-09-26 1987-08-05 Solaronics Vaneecke Brûleur radiant à cadre céramique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1206660A (fr) * 1958-03-21 1960-02-11 Products And Licensing Corp Appareil émetteur de radiations infrarouges
US3228614A (en) * 1962-06-15 1966-01-11 Hupp Corp Gas fired infra-red heaters
DE1551790C3 (de) * 1967-07-18 1978-03-09 Irene 4600 Dortmund-Hoerde Goch Geb. Putsch Brennerplatte aus insbesondere keramischem Material für die flammenlose Verbrennung
DE3317655C2 (de) * 1983-05-14 1986-03-06 Stettner & Co, 8560 Lauf Keramische Lochplatte
JPS63207911A (ja) * 1987-02-23 1988-08-29 Asahi Glass Co Ltd 流体の加熱装置
FR2654804B1 (fr) * 1989-11-21 1994-06-03 Vaneecke Solaronics Procede d'arret automatique d'un bruleur radiant en cas de prise de feu arriere et dispositif d'obturation automatique pour la mise en óoeuvre de ce procede.
FR2683022B1 (fr) * 1991-10-25 1997-07-18 Gaz De France Bruleur radiant a ecran ceramique.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140700A1 (de) 1980-10-15 1982-08-19 Solaronics Vaneecke, 59280 Armentieres Gasstrahlungsbrenner mit eingebauten elektrischen heizelementen
EP0106761A1 (fr) 1982-10-11 1984-04-25 Solaronics Vaneecke Plaquette à face rayonnante alvéolée pour brûleur radiant
EP0230797A1 (fr) 1985-09-26 1987-08-05 Solaronics Vaneecke Brûleur radiant à cadre céramique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004010050A1 (fr) * 2002-07-19 2004-01-29 Shell Internationale Research Maatschappij B.V. Procede de combustion d'un hydrocarbure liquide
WO2014005751A3 (fr) * 2012-07-03 2014-02-27 Ulrich Dreizler Brûleur à système de combustion superficielle
US10605451B2 (en) 2012-07-03 2020-03-31 Ulrich Dreizler Surface combustion burner

Also Published As

Publication number Publication date
EP0949452A3 (fr) 2000-09-20
DE19815785A1 (de) 1999-10-14

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