EP0079594A1 - Chaudière du chauffage central - Google Patents

Chaudière du chauffage central Download PDF

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Publication number
EP0079594A1
EP0079594A1 EP82110445A EP82110445A EP0079594A1 EP 0079594 A1 EP0079594 A1 EP 0079594A1 EP 82110445 A EP82110445 A EP 82110445A EP 82110445 A EP82110445 A EP 82110445A EP 0079594 A1 EP0079594 A1 EP 0079594A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
boiler
molded part
wall
ribs
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
EP82110445A
Other languages
German (de)
English (en)
Other versions
EP0079594B1 (fr
Inventor
Herbert Spindeler
Hans-Willi Maassen
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.)
Calderys France SAS
Original Assignee
Lafarge Refractaires SA
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 Lafarge Refractaires SA filed Critical Lafarge Refractaires SA
Priority to AT82110445T priority Critical patent/ATE17781T1/de
Publication of EP0079594A1 publication Critical patent/EP0079594A1/fr
Application granted granted Critical
Publication of EP0079594B1 publication Critical patent/EP0079594B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • F27D1/0009—Comprising ceramic fibre elements
    • 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
    • F23M5/00—Casings; Linings; Walls

Definitions

  • the invention relates to a boiler, with a burner and with a hot combustion chamber arranged inside the boiler, which is supported to form an annular space between the boiler wall and the combustion chamber on the inside of the boiler wall and is provided for this purpose with outwardly projecting spacer elements.
  • the combustion chamber of such a boiler is essentially uncooled from the outside due to its distance from the boiler wall, so that it can assume and maintain correspondingly high temperatures. Burning regularly leaves unburned residues of the energy source burned. If these residues can sublimate on a wall that has a much lower temperature than the temperature in the actual combustion chamber,
  • the corresponding wall would be covered relatively quickly with a layer of unburned residues, which is disadvantageous.
  • the hot combustion chamber prevents such sublimation of the residues due to its relatively high intrinsic temperature, which residues can thus burn in the course of the further combustion process.
  • combustion chamber has roughened surfaces and if the combustion chamber is a self-supporting molded part consisting of ceramic material with at least 50% fiber content.
  • the roughened surfaces have the effect that the flue gases flowing past are swirled more intensely and the heat transfer towards the boiler wall is improved accordingly.
  • the swirling is much more intense than that which occurs when the flue gases flow past a smooth metallic wall.
  • the surface is given a much rougher structure than the wall of a metallic combustion chamber simply by producing the combustion chamber from the fiber material.
  • the rougher structure caused by the fiber material has the advantageous effect that the heat radiation emanating from the flame is reflected in a much more intense distribution and the afterburning can thus be promoted accordingly.
  • the next advantage is the fact that the fiber material, due to its over metal much lower thermal conductivity on the inside of the combustion chamber can reach a higher temperature than that which would occur with a metallic combustion chamber wall.
  • the combustion chamber is also easier and faster to heat up.
  • the molded part forming the combustion chamber has a not quite as roughened surface on its side facing the mold core as on the other side.
  • the molded part is additionally provided with a coating of this fiber material. Since the molded part is self-supporting, it is sufficient to apply a relatively thin coating.
  • the molded part forming the combustion chamber is provided with grooves or at least has an undulating configuration on the inside. This will keep the inside of the focal chamber an even more structured shape, so that the reflection of the heat radiation is intensified over an even larger area.
  • the surface on the outside of the combustion chamber does not necessarily have to have this wave or groove shape; in general, however, this shape will also be transferred to the outside at least to a small extent during manufacture, especially when efforts are made to keep the wall thickness of the combustion chamber largely the same. Appropriate structuring of the outside in turn improves the swirling of the flue gas flow desired there.
  • grooves or shafts mentioned it is conceivable for the grooves or shafts mentioned to run in the circumferential direction or also in a helical shape. It is generally more advantageous for production if the grooves or shafts extend in the longitudinal direction of the molded part.
  • the molded part can furthermore have ribs which are integrally formed during manufacture and which are designed as spacer elements. These ribs will also expediently extend in the longitudinal direction of the molded part. If the wall thickness of the molded part in the area of the ribs is at least approximately equal to the wall thickness of the other molded part, there is at the same time a wave-shaped course of the combustion chamber wall on the inside, as can also be provided in other areas of the combustion chamber wall regardless of this configuration of the spacer elements.
  • FIGS. 1 to 4 each relate to a heating boiler with a passage combustion chamber, while the embodiment according to FIGS. 5 and 6 relates to a reverse combustion chamber.
  • the wall of the boiler which is only indicated schematically here, is designated by the reference number 10.
  • the combustion chambers 11, 12 and 13 shown in the three exemplary embodiments each consist of a ceramic material which contains at least 50% of ceramic fibers.
  • binders and, where appropriate, suitable additives.
  • the combustion chambers 11, 12 and 13 are each molded parts that are self-supporting and have a corresponding strength.
  • the cross section is at least approximately circular, while the diameter is selected such that an annular space 14 remains between the outside of the combustion chambers 11 to 13 on the one hand and the boiler wall 10 on the other.
  • the combustion chamber 11 has three ribs 15 which are each arranged at an angular distance of 120 ° and which, viewed in cross section, have an approximately undulating shape.
  • the material thickness remains at least approximately the same as the material thickness of the remaining part of the combustion chamber 11.
  • the ribs 15 extend in the longitudinal direction over the entire length of the combustion chamber 11.
  • the same also applies to the combustion chamber 12 of the embodiment according to FIGS. 3 and 4.
  • four ribs 15 are formed here at an angular distance of 90 ° to one another.
  • the inside of the combustion chamber 12 can be provided with grooves 16 extending in the longitudinal direction.
  • the grooves 16 or the recesses 17, which can be distributed over the entire circumference of the combustion chamber wall, both have the purpose of creating reflecting surfaces pointing in different directions in order to reflect the heat radiation emanating from the flame in the central cross-sectional area as far as possible and this will improve afterburning.
  • the combustion chamber 12 can optionally also be provided with a coating 18 made of fiber material. It is in fact conceivable that a smoother surface structure is created on that side of the combustion chamber which bears against the mold core used in the production than on the other side of the combustion chamber. Should the surface behave through that If the contact with the mold core is not sufficiently rough, then a rougher surface structure can be produced by the coating 18.
  • the combustion chamber 13 likewise has four ribs 15. Two of these are diametrically opposed to one side, while the other two ribs 15 are formed in the lower region. It is namely conceivable that the wall 10 of a boiler has at the lowest point of a rail 19 or the like protruding somewhat inwards, so that there is no possibility of supporting a rib 15 in this area.
  • the combustion chamber 13 designed as a reversal combustion chamber is closed at one end. Its shell-shaped end face has a bulge 20 projecting forward in the axial direction. This serves as a spacer, by means of which the combustion chamber 13 can be axially supported against an adjacent structural part within the heating boiler without fully contacting its entire end face.
  • the flue gas flow is indicated by corresponding arrows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Ceramic Engineering (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gas Burners (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
EP82110445A 1981-11-11 1982-11-11 Chaudière du chauffage central Expired EP0079594B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82110445T ATE17781T1 (de) 1981-11-11 1982-11-11 Heizungskessel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3144744 1981-11-11
DE3144744A DE3144744C2 (de) 1981-11-11 1981-11-11 Heizungskessel

Publications (2)

Publication Number Publication Date
EP0079594A1 true EP0079594A1 (fr) 1983-05-25
EP0079594B1 EP0079594B1 (fr) 1986-01-29

Family

ID=6146104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110445A Expired EP0079594B1 (fr) 1981-11-11 1982-11-11 Chaudière du chauffage central

Country Status (3)

Country Link
EP (1) EP0079594B1 (fr)
AT (1) ATE17781T1 (fr)
DE (2) DE3144744C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321611A1 (fr) * 1987-12-22 1989-06-28 Franco Andreoli Tube foyer pour tube chauffant à radiation pour four industriel
EP0735320A2 (fr) * 1995-03-30 1996-10-02 DAS-DÜNNSCHICHT ANLAGEN SYSTEME GmbH DRESDEN Procédé et dispositif pour la purification des effluents gazeux nocifs par conversion chimique
EP0913641A3 (fr) * 1997-10-31 2000-05-03 Robert Bosch Gmbh Chambre de combustion pour un chauffe-eau, notamment appareils chauffés au gaz
EP2314948A3 (fr) * 2009-10-14 2011-11-02 Viessmann Werke GmbH & Co. KG Chaudière

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231211C2 (de) * 1982-08-21 1986-10-02 Didier-Werke Ag, 6200 Wiesbaden Einrichtung für eine Brennkammer mit einem Öl- oder Gasbrenner

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE557189A (fr) *
DE925418C (de) * 1951-11-04 1955-03-21 Gustav Dr-Ing Ficker Hochwarmfester temperaturwechselbestaendiger keramischer Bauteil
CA610978A (en) * 1960-12-20 A. Clark William Furnace construction
FR1369169A (fr) * 1963-09-12 1964-08-07 American Radiator & Standard Garnissage fibreux réfractaire pour chambres de combustion
US3213917A (en) * 1963-07-10 1965-10-26 Johns Manville Furnace combustion chambers
DE1949036A1 (de) * 1968-09-30 1970-04-09 Produits Refractaires Heizkessel
FR2253405A5 (en) * 1973-12-04 1975-06-27 Saunier Duval Combustion chamber for gas fired boiler - made from fibrous refractory material consists of U-shaped plate and flat closure plate
FR2345671A1 (fr) * 1976-03-27 1977-10-21 Viessmann Hans Chaudiere pour la combustion de combustibles liquides ou gazeux
US4169431A (en) * 1976-10-09 1979-10-02 Hans Viessmann Boiler

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE82812C (fr) *
DE3017050C2 (de) * 1980-05-03 1983-03-24 Stettner & Co, 8560 Lauf Einsatz für Öfen oder Heizkessel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE557189A (fr) *
CA610978A (en) * 1960-12-20 A. Clark William Furnace construction
DE925418C (de) * 1951-11-04 1955-03-21 Gustav Dr-Ing Ficker Hochwarmfester temperaturwechselbestaendiger keramischer Bauteil
US3213917A (en) * 1963-07-10 1965-10-26 Johns Manville Furnace combustion chambers
FR1369169A (fr) * 1963-09-12 1964-08-07 American Radiator & Standard Garnissage fibreux réfractaire pour chambres de combustion
DE1949036A1 (de) * 1968-09-30 1970-04-09 Produits Refractaires Heizkessel
FR2253405A5 (en) * 1973-12-04 1975-06-27 Saunier Duval Combustion chamber for gas fired boiler - made from fibrous refractory material consists of U-shaped plate and flat closure plate
FR2345671A1 (fr) * 1976-03-27 1977-10-21 Viessmann Hans Chaudiere pour la combustion de combustibles liquides ou gazeux
US4169431A (en) * 1976-10-09 1979-10-02 Hans Viessmann Boiler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321611A1 (fr) * 1987-12-22 1989-06-28 Franco Andreoli Tube foyer pour tube chauffant à radiation pour four industriel
EP0735320A2 (fr) * 1995-03-30 1996-10-02 DAS-DÜNNSCHICHT ANLAGEN SYSTEME GmbH DRESDEN Procédé et dispositif pour la purification des effluents gazeux nocifs par conversion chimique
EP0735320A3 (fr) * 1995-03-30 1997-03-26 Das Duennschicht Anlagen Sys Procédé et dispositif pour la purification des effluents gazeux nocifs par conversion chimique
EP0913641A3 (fr) * 1997-10-31 2000-05-03 Robert Bosch Gmbh Chambre de combustion pour un chauffe-eau, notamment appareils chauffés au gaz
EP2314948A3 (fr) * 2009-10-14 2011-11-02 Viessmann Werke GmbH & Co. KG Chaudière

Also Published As

Publication number Publication date
EP0079594B1 (fr) 1986-01-29
ATE17781T1 (de) 1986-02-15
DE3144744A1 (de) 1983-05-19
DE3144744C2 (de) 1984-04-12
DE3268891D1 (en) 1986-03-13

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