EP0718551A2 - Brûleur radiant avec une plaque de brûleur perméable au gaz - Google Patents

Brûleur radiant avec une plaque de brûleur perméable au gaz Download PDF

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Publication number
EP0718551A2
EP0718551A2 EP95118350A EP95118350A EP0718551A2 EP 0718551 A2 EP0718551 A2 EP 0718551A2 EP 95118350 A EP95118350 A EP 95118350A EP 95118350 A EP95118350 A EP 95118350A EP 0718551 A2 EP0718551 A2 EP 0718551A2
Authority
EP
European Patent Office
Prior art keywords
burner
areas
gas permeability
different
radiant
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Withdrawn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
EP95118350A
Other languages
German (de)
English (en)
Other versions
EP0718551A3 (fr
Inventor
Michael Kahlke
Kenneth M. Kratsch
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.)
Schott AG
Carl Zeiss AG
Original Assignee
Carl Zeiss AG
Schott Glaswerke AG
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 Carl Zeiss AG, Schott Glaswerke AG filed Critical Carl Zeiss AG
Publication of EP0718551A2 publication Critical patent/EP0718551A2/fr
Publication of EP0718551A3 publication Critical patent/EP0718551A3/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Withdrawn legal-status Critical Current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
    • F23D14/12—Radiant burners
    • F23D14/16—Radiant burners using permeable blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/005—Radiant burner heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/105—Porous plates
    • 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
    • F23D2212/103—Fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications
    • F23D2212/20—Burner material specifications metallic
    • F23D2212/201—Fibres

Definitions

  • the invention relates to a radiant burner with a burner chamber and a gas-permeable burner plate made of ceramic or metal for gas-fired devices, in particular for hobs or individual cooking zones, the heating surface of which consists of glass ceramic.
  • German patent DE 24 40 701 C3 describes a gas stove with a plurality of burner burners which are designed as gas-fired jet burners with perforated ceramic plates, on the surface of which the gas burns flamelessly. These are arranged at a distance below a glass ceramic plate common to all burners. The space surrounding the burner is closed on all sides except for openings outside the glass ceramic plate and from the gas stove operating side for discharging the combustion gases, and each burner has an ignition device which can be actuated from the outside and an ignition protection device to protect against the outflow of unburned gas.
  • This invention is characterized in that a small distance of approximately 10 mm to 15 mm is selected between the glass ceramic plate and the jet surface of each burner ceramic plate, that each burner is divided into at least two chambers and that each of these chambers has a gas injector which sucks in the combustion air Is provided.
  • DE 24 40 701 C3 is based on the task of creating a gas stove which has a high degree of efficiency and which, while maintaining this high degree of efficiency, nevertheless permits good regulation options with regard to different heat requirements.
  • US Pat. No. 4,673,349 is used to derive gas radiation burners with burner plates made of porous ceramic, which have a pore volume of more than 30% by volume and an average pore diameter of 25-500 ⁇ m. Furthermore, these burner plates have a large number of continuous channels, spaced 2 to 30 mm apart, with hydraulic diameters of 0.05 to 5.0 mm, which run perpendicular to the combustion surface.
  • the porous ceramic consists in particular of a composite material which can contain 2-50% by weight of heat-resistant inorganic, in particular ceramic fibers.
  • a heating device with a gas burner which has two combustion chambers which can be acted upon independently of one another and which, for. B. can limit concentric zones in the cooking zone area is described in US Pat. No. 4,083,355.
  • the German patent DE 40 22 846 C2 has a device for power control and limitation in a heating surface made of glass ceramic, in particular in a hob, with at least one heating zone with a heating device consisting of at least two concentrically arranged, independently switchable and controllable Heating elements which delimit mutually concentric areas assigned in the heating zone, with at least one annular, concentric glass ceramic temperature measuring resistor delimited in the glass ceramic heating surface by parallel conductor tracks in each area of the heating zone assigned to a heating element, and with a control which is in operative connection with the respective glass ceramic temperature measuring resistors assigned to a heating area - And regulating devices for controlling and limiting the power supply to the respectively assigned heating element.
  • the object of this DE 40 22 846 C2 is to enable, in addition to reliable temperature monitoring that is as extensive as possible, to adapt the power supply to the locally different heat extraction.
  • porous, perforated ceramic plates or fiber meshes made of ceramic or metal are used as burner plates. These burner plates close off the mixing or burner chamber in which the gas / air mixture is mixed. Small flames burn in the top layer of the burner plate, causing the burner plates to glow and act as radiant heaters. The temperature of the radiant burner plates is between about 900 and 950 ° C. Similar gas radiation burners are also used in room heating, in hot water conditioners and in drying systems. Generally, the entire surface of the burner plate is illuminated; only with dual-circuit burners, an inner circular disc and an outer ring burner are operated separately.
  • a disadvantage of the current designs is that the power is either distributed evenly over the entire burner plate, or if the burner is designed as a dual-circuit burner with separate burners and / or several combustion chambers, that the construction is complex and expensive and, moreover, also only very rough, can be regulated in large areas.
  • a lowering of the specific power in the middle of the burner is favorable, since otherwise there is a sharp increase in temperature in the middle of the burner during operation.
  • the cookware used in practical use sits on the edge of the floor and is curved upwards in the middle of the floor, creating a thin air cushion. This air cushion means that the heat dissipation in the middle is less than at the edge and the temperature peaks when the burner's power distribution is even. For this reason, the burner output in the middle of heating elements for electrically operated cooking zones is reduced compared to the mean specific output.
  • the gas-permeable burner plate has areas with different gas permeability, with areas of the burner plate no longer having gas permeability in a preferred embodiment.
  • the areas without gas permeability should be 40% to 70%, in particular 50% to 60% of the total area of the burner plate make up, whereby the overall performance of the burner remains in these areas at the same performance level with the areas of different, reduced or without gas permeability and thus reduced power.
  • the areas of the burner plate with different gas permeability can be designed as circular or ring-shaped zones arranged concentrically to one another, as circular sections or sectors and / or segments or also spirally.
  • the burner plate can consist monolithically of one piece or of a one-piece fiber mat, the areas of different gas permeability being assigned a material but with different properties, such as in particular different density and porosity.
  • the burner plates made of fiber materials can be compressed in some areas so that gas no longer flows through them and this area becomes inactive.
  • the burner plate is composed of several parts from individual discrete areas and / or zones and / or sectors.
  • the burner plates are then z. B. composed of segments that are mounted in a mask.
  • the burner plate material can then be used here particularly inexpensively.
  • Round burner plates made of metal or ceramic fibers have so far been cut or punched from large rectangular plates of this material. This naturally creates waste, which is particularly undesirable with this expensive material. However, if the burner plates are assembled from segments, this waste can be reduced or even avoided entirely.
  • the areas of the burner plate with different gas permeability can be assigned areas with different materials.
  • the gas permeable areas of the burner plate z. B. in the form of sectors made of fiber materials, in particular SiC fibers, and the areas that have no gas permeability consist of dense Al2O3 or cordierite segments. The segments of different materials are then assembled and z. B. mounted in a mask.
  • the areas of different gas permeability result from chemical and / or physical differences in the material properties of the monolithic burner plate itself or a multi-part burner plate.
  • the areas of different gas permeability can be covered by a second material arranged on and / or below and / or in the completely or partially gas-permeable burner plate Burner plate of different gas permeability are formed.
  • the second material can be a different material, especially Al2O3, or the same material, especially SiC with different density or porosity properties than the burner plate itself.
  • the areas of different gas permeability can also be realized by coatings with a temperature-resistant, gas-impermeable material, in particular with fine-particle Al2O3 on the top and / or bottom of the burner plate, or by masks, covers or masking with reduced or no gas permeability, in particular made of stainless steel sheet be positioned on the top and / or bottom and / or sandwiched in the burner plate.
  • the masks in particular are exchangeable and exchangeable from the outside of the device during operation of the burner plate. According to the present invention, it is possible to separate the areas of different gas permeability of the burner plate discretely and sharply from one another or to let them run continuously into one another and thus achieve a softer course of the temperature distribution.
  • the gas radiation burners according to the invention fulfill their task particularly efficiently when the gas-permeable burner plate consists of porous ceramic, of ceramic, temperature-resistant fibers, in particular of SiC fibers and / or of metallic fibers.
  • the invention is explained in more detail below with reference to the figures and the exemplary embodiments:
  • FIG. 1b and d show burners with radial circular sectors with a radially substantially constant temperature profile, the central region being lowered in FIG. 1d.
  • the burner is divided into circular rings, so that the radial temperature profile can be determined by choosing the area ratio of the covered to the open areas.
  • the burner plate according to FIG. 1a only the middle area is lowered, as is usual with electric radiators.
  • a burner plate as z. B. sells the company Global Environmental Solutions, Can Clemente, California, made of SiC fibers (Nicalon, Nippon Carbide) with a thickness of 15 ⁇ m, which were bonded together in a CVD process with SiC to form a mold, is made to 60% of the area Figure 1b coated.
  • the burner plate has a thickness of 4 mm, a diameter of 180 mm and a porosity of 90%. It is coated on the top, which glows during operation, on the areas to be covered with aluminum oxide paste (901 Alumina Ceramic, Cotronics Corp., Brooklyn New York). Burner plates according to FIGS. 1a, c and d are produced in the same way.
  • the segments are mounted in rings made of stainless steel sheet (type 104301) with a thickness of 2 mm so that a burner of the shape shown in FIG. 1a is created. Adequate tightness in the edge area is achieved by the pressing, so that no visually conspicuous additional flame areas arise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP95118350A 1994-12-20 1995-11-22 Brûleur radiant avec une plaque de brûleur perméable au gaz Withdrawn EP0718551A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445426A DE4445426A1 (de) 1994-12-20 1994-12-20 Strahlungsbrenner mit einer gasdurchlässigen Brennerplatte
DE4445426 1994-12-20

Publications (2)

Publication Number Publication Date
EP0718551A2 true EP0718551A2 (fr) 1996-06-26
EP0718551A3 EP0718551A3 (fr) 1996-12-18

Family

ID=6536360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118350A Withdrawn EP0718551A3 (fr) 1994-12-20 1995-11-22 Brûleur radiant avec une plaque de brûleur perméable au gaz

Country Status (8)

Country Link
US (1) US5800156A (fr)
EP (1) EP0718551A3 (fr)
JP (1) JPH08219422A (fr)
KR (1) KR960024005A (fr)
AU (1) AU4047795A (fr)
BR (1) BR9505936A (fr)
DE (1) DE4445426A1 (fr)
MX (1) MX9505287A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418382A3 (fr) * 2002-11-05 2004-05-26 CRAMER SR s.r.o. Brûleur radiant
DE102005023438A1 (de) * 2005-05-20 2006-11-23 Schott Ag Kochfeld
EP1962016A2 (fr) 2007-02-23 2008-08-27 BSH Bosch und Siemens Hausgeräte GmbH Plaque de brûleur
WO2016026714A1 (fr) * 2014-08-19 2016-02-25 Schunk Kohlenstofftechnik Gmbh Corps poreux et brûleur poreux comprenant une zone de combustion formée par un corps poreux

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6629837B2 (en) * 2000-02-10 2003-10-07 Philip C. Carbone Integrated premixed indirect radiant burner
EP1274960B1 (fr) * 2000-04-17 2006-02-22 N.V. Bekaert S.A. Membrane de brûleur à gaz
WO2003092458A1 (fr) 2002-05-06 2003-11-13 Cimbali, S.P.A. Dispositif de chauffage et de preparation pour du lait
AU2003289559B2 (en) * 2003-12-29 2008-07-03 Lg Electronics Inc. Burner assembly for gas burners of radiant heating type
US7857616B2 (en) * 2004-04-06 2010-12-28 Tiax Llc Burner apparatus
US20060141412A1 (en) * 2004-12-27 2006-06-29 Masten James H Burner plate and burner assembly
USD525483S1 (en) * 2004-12-27 2006-07-25 3M Innovative Properties Company Burner plate
US20060141413A1 (en) * 2004-12-27 2006-06-29 Masten James H Burner plate and burner assembly
ITTO20050685A1 (it) * 2005-09-30 2007-04-01 Indesit Co Spa Piano di cottura con bruciatore a gas comprendente un elemento semipermeabile
JP4873549B2 (ja) * 2006-07-28 2012-02-08 株式会社パロマ ガスコンロ
EP2014980A1 (fr) 2007-07-13 2009-01-14 Schwank GmbH Plaque de brûleur céramique
WO2011147654A1 (fr) * 2010-05-25 2011-12-01 Solaronics S.A. Élément de brûleur présentant des différences locales de propriétés physiques
US20180372329A1 (en) * 2017-06-22 2018-12-27 Bikram Shrestha Stovetop Burner Protection System

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2440701A1 (de) 1974-08-24 1976-03-11 Schwank Gmbh Gasherd mit einem oder mehreren kochstellen-brennern
US4673349A (en) 1984-12-20 1987-06-16 Ngk Insulators, Ltd. High temperature surface combustion burner
DE4022846A1 (de) 1990-07-18 1992-01-23 Schott Glaswerke Verfahren und vorrichtung zur leistungssteuerung und -begrenzung bei einer heizflaeche aus glaskeramik oder einem vergleichbaren material

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2194208A (en) * 1937-01-12 1940-03-19 Clarence E Moran Fluid fuel burner
US2987118A (en) * 1958-03-06 1961-06-06 Whirlpool Co Gas burner
FR2222329A2 (en) * 1969-06-27 1974-10-18 Shell Int Research Porous ceramic heat-radiating elements - having a region of reduced flow resistance to prevent gas blow-back
US3843313A (en) * 1973-07-23 1974-10-22 Raytheon Co Multi-cavity radiant burner
JPS59501993A (ja) * 1982-11-11 1984-11-29 モ−ガン・サ−ミツク・リミテツド 自己通風型熱放射ガス・バーナ組立体
GB8620228D0 (en) * 1986-08-20 1986-10-01 Valor Heating Ltd Gas burner
JP2523815B2 (ja) * 1988-09-19 1996-08-14 松下電器産業株式会社 焼成調理器
BE1003054A3 (nl) * 1989-03-29 1991-11-05 Bekaert Sa Nv Brandermembraan.
GB9107427D0 (en) * 1991-04-09 1991-05-22 Pompe Dev Ltd Improvements in or relating to gas hobs and components therefor
EP0549476B1 (fr) * 1991-12-24 1998-09-23 Tokyo Gas Co., Ltd. Brûleur à combustion en surface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2440701A1 (de) 1974-08-24 1976-03-11 Schwank Gmbh Gasherd mit einem oder mehreren kochstellen-brennern
US4083355A (en) 1974-08-24 1978-04-11 Schwank Gmbh Gas range
US4673349A (en) 1984-12-20 1987-06-16 Ngk Insulators, Ltd. High temperature surface combustion burner
DE4022846A1 (de) 1990-07-18 1992-01-23 Schott Glaswerke Verfahren und vorrichtung zur leistungssteuerung und -begrenzung bei einer heizflaeche aus glaskeramik oder einem vergleichbaren material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418382A3 (fr) * 2002-11-05 2004-05-26 CRAMER SR s.r.o. Brûleur radiant
DE102005023438A1 (de) * 2005-05-20 2006-11-23 Schott Ag Kochfeld
EP1962016A2 (fr) 2007-02-23 2008-08-27 BSH Bosch und Siemens Hausgeräte GmbH Plaque de brûleur
DE102007008895A1 (de) 2007-02-23 2008-08-28 BSH Bosch und Siemens Hausgeräte GmbH Brennerplatte
EP1962016A3 (fr) * 2007-02-23 2015-05-27 BSH Hausgeräte GmbH Plaque de brûleur
WO2016026714A1 (fr) * 2014-08-19 2016-02-25 Schunk Kohlenstofftechnik Gmbh Corps poreux et brûleur poreux comprenant une zone de combustion formée par un corps poreux

Also Published As

Publication number Publication date
EP0718551A3 (fr) 1996-12-18
US5800156A (en) 1998-09-01
AU4047795A (en) 1996-06-27
JPH08219422A (ja) 1996-08-30
MX9505287A (es) 1997-01-31
DE4445426A1 (de) 1996-06-27
BR9505936A (pt) 1997-12-23
KR960024005A (ko) 1996-07-20

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