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FR2605386A2 - Improvements made to an air-circulating device in a wood-fired boiler - Google Patents

Improvements made to an air-circulating device in a wood-fired boiler Download PDF

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Publication number
FR2605386A2
FR2605386A2 FR8614762A FR8614762A FR2605386A2 FR 2605386 A2 FR2605386 A2 FR 2605386A2 FR 8614762 A FR8614762 A FR 8614762A FR 8614762 A FR8614762 A FR 8614762A FR 2605386 A2 FR2605386 A2 FR 2605386A2
Authority
FR
France
Prior art keywords
solid fuel
boiler
boiler according
fuel boiler
air inlet
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
FR8614762A
Other languages
French (fr)
Other versions
FR2605386B2 (en
Inventor
Roger Sonderegger
Alfred Engel
Paul Hintermayr
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.)
De Dietrich et Cie SA
Original Assignee
De Dietrich et Cie 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
Priority claimed from FR8604823A external-priority patent/FR2596851B1/en
Application filed by De Dietrich et Cie SA filed Critical De Dietrich et Cie SA
Priority to FR8614762A priority Critical patent/FR2605386B2/en
Priority to DE8787440018T priority patent/DE3766998D1/en
Priority to EP19870440018 priority patent/EP0240445B1/en
Publication of FR2605386A2 publication Critical patent/FR2605386A2/en
Application granted granted Critical
Publication of FR2605386B2 publication Critical patent/FR2605386B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F24B5/04—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves the air or gas passing downwards through the bottom of the stove of fire grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B5/00—Combustion apparatus with arrangements for burning uncombusted material from primary combustion
    • F23B5/04—Combustion apparatus with arrangements for burning uncombusted material from primary combustion in separate combustion chamber; on separate grate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2230/00—Solid fuel fired boiler

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Ventilation (AREA)

Abstract

The present invention relates to improvements intended to equip a solid-fuel-fired boiler and, more particulary, the air-circulating device of this boiler. The first improvement consists in equipping the smoke outlet 5 with a diluting means. In order to do this, a boiler-room air inlet 7 is made between the boiler outlet and the inlet of the fan 6. The second improvement consists in equipping the primary air inlet with a draught moderator, for example a weighted damper. Applications: solid-fuel-fired boilers.

Description

La présente addition à la demande de brevet français N 86 04 823 concerne des perfectionnements apportés aux dispositifs de circulation d'air dans une chaudière à bois. The present addition to French patent application N 86 04 823 relates to improvements made to the air circulation devices in a wood-fired boiler.

Les dispositifs de circulation d'air de ces types de chaudières comportent : une entrée d'air primaire, une entrée d'air secondaire, un ventilateur d'extraction. The air circulation devices of these types of boilers include: a primary air inlet, a secondary air inlet, an exhaust fan.

Afin d'améliorer encore le rendement de la chaudière,la demanderesse a eu l'idée d'étudier en laboratoire la stabilité de la combustion. Ces essais lui ont permis de découvrir qu'en agissant sur la stabilité de la combustion, on pouvait gagner en rendement. In order to further improve the efficiency of the boiler, the applicant had the idea of studying the stability of combustion in the laboratory. These tests enabled him to discover that by acting on the combustion stability, one could gain in efficiency.

La présente invention porte sur deux perfectionnements du dispositif de circulation d'air, les dits perfectionnements étant appliqués séparément ou simultanément. On comprendra mieux l'invention à l'aide de la description ciprès et des figures annexées
La figure 1 est une vue en coupe de la chaudière, objet de la demande de brevet principale, cette vue montrant le parcours de circulation d'air.The present invention relates to two improvements of the air circulation device, the said improvements being applied separately or simultaneously. The invention will be better understood using the description below and the appended figures
Figure 1 is a sectional view of the boiler, subject of the main patent application, this view showing the air circulation path.

La figure 2 est un croquis d'un premier mode de réalisation du premier perfectionnement. Figure 2 is a sketch of a first embodiment of the first improvement.

La figure 3 est un croquis d'un deuxième mode de réalisation du premier perfectionnement. Figure 3 is a sketch of a second embodiment of the first improvement.

La figure 4 est un croquis du mode de réalisation préféré du deuxième perfectionnement. Figure 4 is a sketch of the preferred embodiment of the second improvement.

Le premier perfectionnement consiste à équiper la sortie des fumées (5) d'un moyen de dilution. Pour cela on pratique entre la sortie chaudière et l'entrée du ventilateur (6), une entrée d'air extérieur ou d'air de chaufferie (7). The first improvement consists in equipping the smoke outlet (5) with a dilution means. For this, an outside air or boiler air inlet (7) is used between the boiler outlet and the fan inlet (6).

Le ventilateur (6) envoie donc dans la cheminée un mélange (8) de fumée et d'air de chaufferie. Ceci a pour but d'abaisser le point de rosée des fumées et d'éviter ainsi la condensation sur les parois internes de la cheminée. The fan (6) therefore sends a mixture (8) of smoke and boiler air into the chimney. This is to lower the dew point of the smoke and thus avoid condensation on the internal walls of the chimney.

Selon le premier mode de réalisation de la figure 2 l'entrée d'air de chaufferie (7) est équipée d'un clapet lesté (9) pouvant être réglé manuellement, ou piloté automatiquement, par exemple en fonction de la température de la cheminée, des séquences de la chaudière, etc. According to the first embodiment of Figure 2 the boiler air inlet (7) is equipped with a weighted valve (9) which can be adjusted manually, or controlled automatically, for example depending on the temperature of the chimney , boiler sequences, etc.

Selon le deuxième mode de réalisation de la figure 3 l'entrée d'air de chaufferie (7) est équipée d'un obturateur circulaire (10) réglé manuellement.  According to the second embodiment of Figure 3 the boiler air inlet (7) is equipped with a circular shutter (10) manually adjusted.

En outre le dispositif de circulation d'air peut être équipé d'un deuxième perfectionnement représenté en figure 4 qui consiste à équiper l'entrée d'air primaire (1) d'un modérateur de tirage, par exemple d'un clapet lesté (2). Pour empêcher la sortie éventuelle de flammes par l'ouverture du clapet (2), on prévoit de monter une boîte anti-retour de flammes (3) sur la face interne de l'entrée d'air primaire (1). Cette boite comporte de préférence sur sa partie supérieure une grille (4) òu des ouvertures appropriées. In addition, the air circulation device can be equipped with a second improvement represented in FIG. 4 which consists in equipping the primary air inlet (1) with a draft moderator, for example with a weighted valve ( 2). To prevent the possible escape of flames through the opening of the valve (2), provision is made to mount a non-return flame box (3) on the internal face of the primary air inlet (1). This box preferably has on its upper part a grid (4) or suitable openings.

Les essais effectués en laboratoire sur des chaudières à bois équipées de ces deux perfectionnements montrent une amélioration très nette de la stabilité de la combustion, qui de ce fait, a un meilleur rendement.  Tests carried out in the laboratory on wood boilers equipped with these two improvements show a very marked improvement in the stability of combustion, which therefore has a better efficiency.

Claims (9)

REVENDICATIONS 1. Chaudière à combustibles solides, selon l'une quelconque des revendications de la demande principale, caractérisée en ce qu'elle comporte en outre un moyen de dilution des fumées de sortie de la chaudière. 1. Solid fuel boiler according to any one of claims of the main application, characterized in that it further comprises a means for diluting the fumes leaving the boiler. 2. Chaudière à combustibles solides, selon la revendication précédente caractérisée en ce que le moyen de dilution des fumées consiste en une entrée d'air de chaufferie équipée d'un clapet lesté (9). 2. Solid fuel boiler according to the preceding claim, characterized in that the means for diluting the fumes consists of a boiler air inlet fitted with a ballasted valve (9). 3. Chaudière à combustibles solides, selon la revendication 1 caractérisée en ce que le moyen de dilution des fumées consiste en une entrée d'air de chaufferie équipée d'un obturateur circulaire (10). 3. Solid fuel boiler according to claim 1 characterized in that the smoke dilution means consists of a boiler air inlet equipped with a circular shutter (10). 4. Chaudière à combustibles solides selon l'une quelconque des revendications précédentes caractérisée en ce que le moyen de dilution des fumées est placé entre le ventilateur (6) et la sortie des fumées (5). 4. Solid fuel boiler according to any one of the preceding claims, characterized in that the smoke dilution means is placed between the fan (6) and the smoke outlet (5). 5. Chaudière à combustibles solides selon l'une quelconque des revendications précédentes caractérisée en ce que le moyen de dilution est réglé manuellement. 5. Solid fuel boiler according to any one of the preceding claims, characterized in that the dilution means is adjusted manually. 6. Chaudière à-combustibles solides selon l'une quelconque des revendications précédentes caractérisée en ce que le moyen de dilution des fumées est piloté automatiquement en fonction de l'une au moins des données (température des fumées - séquence de la chaudière). 6. Solid fuel boiler according to any one of the preceding claims, characterized in that the smoke dilution means is controlled automatically according to at least one of the data (smoke temperature - sequence of the boiler). 7. Chaudière à combustibles solides selon l'une quelconque des revendications précédentes caractérisée en ce qu'elle comporte en outre un modérateur de tirage sur l'entrée d'air primaire. 7. Solid fuel boiler according to any one of the preceding claims, characterized in that it also comprises a draft moderator on the primary air inlet. 8. Chaudière à combustibles solides selon la revendication précédente caractérisée en ce que le modérateur de tirage consiste en un clapet lesté (2). 8. Solid fuel boiler according to the preceding claim characterized in that the draft moderator consists of a weighted valve (2). 9. Chaudière à combustibles solides selon la revendication précédente caractérisée en ce que le modérateur de tirage est équipé d'une boite anti-retour de flammes (3) comportant une grille (4) sur sa partie supérieure.  9. Solid fuel boiler according to the preceding claim characterized in that the draft moderator is equipped with a flame-retardant box (3) comprising a grid (4) on its upper part.
FR8614762A 1986-04-02 1986-10-20 IMPROVEMENTS TO THE AIR CIRCULATION DEVICE IN A WOOD BOILER Expired - Lifetime FR2605386B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8614762A FR2605386B2 (en) 1986-04-02 1986-10-20 IMPROVEMENTS TO THE AIR CIRCULATION DEVICE IN A WOOD BOILER
DE8787440018T DE3766998D1 (en) 1986-04-02 1987-03-30 CAST-IRON BOILER FOR SOLID FUELS WITH A FIRE-RESISTANT COMBUSTION CHANNEL.
EP19870440018 EP0240445B1 (en) 1986-04-02 1987-03-30 Sectional-type cast iron boiler for solid fuels comprising a fireproof afterburning channel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604823A FR2596851B1 (en) 1986-04-02 1986-04-02 REVERSE COMBUSTION TYPE SOLID FUEL BOILER AND POST-COMBUSTION REFRACTORY CHANNEL
FR8614762A FR2605386B2 (en) 1986-04-02 1986-10-20 IMPROVEMENTS TO THE AIR CIRCULATION DEVICE IN A WOOD BOILER

Publications (2)

Publication Number Publication Date
FR2605386A2 true FR2605386A2 (en) 1988-04-22
FR2605386B2 FR2605386B2 (en) 1990-03-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8614762A Expired - Lifetime FR2605386B2 (en) 1986-04-02 1986-10-20 IMPROVEMENTS TO THE AIR CIRCULATION DEVICE IN A WOOD BOILER

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FR (1) FR2605386B2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE373780A (en) *
GB480006A (en) * 1936-09-08 1938-02-15 Recomatic S A Improvements in and relating to heating installations
FR1365402A (en) * 1963-05-20 1964-07-03 Flue ventilation device
FR2333201A1 (en) * 1975-11-28 1977-06-24 Hahn Stefan FILLING TANK COMBUSTION PLANT
FR2516209A1 (en) * 1981-11-10 1983-05-13 Hays Claude Inverted-combustion hot water generator - has grille of refractory bricks above secondary combustion chamber over which hot gases pass
DE3231760A1 (en) * 1982-08-26 1984-03-01 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Heating boiler arrangement
US4516534A (en) * 1984-03-16 1985-05-14 Unical S.P.A. Steel construction solid-fuel firing boiler for civil heating applications
DE8603364U1 (en) * 1986-02-08 1986-04-03 Buderus Ag, 6330 Wetzlar Component for controlling an air damper

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE373780A (en) *
GB480006A (en) * 1936-09-08 1938-02-15 Recomatic S A Improvements in and relating to heating installations
FR1365402A (en) * 1963-05-20 1964-07-03 Flue ventilation device
FR2333201A1 (en) * 1975-11-28 1977-06-24 Hahn Stefan FILLING TANK COMBUSTION PLANT
FR2516209A1 (en) * 1981-11-10 1983-05-13 Hays Claude Inverted-combustion hot water generator - has grille of refractory bricks above secondary combustion chamber over which hot gases pass
DE3231760A1 (en) * 1982-08-26 1984-03-01 Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden Heating boiler arrangement
US4516534A (en) * 1984-03-16 1985-05-14 Unical S.P.A. Steel construction solid-fuel firing boiler for civil heating applications
DE8603364U1 (en) * 1986-02-08 1986-04-03 Buderus Ag, 6330 Wetzlar Component for controlling an air damper

Also Published As

Publication number Publication date
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