FR2512526A2 - Solid fuel boiler - has reciprocating piston to supply fresh fuel and remove ash - Google Patents
Solid fuel boiler - has reciprocating piston to supply fresh fuel and remove ash Download PDFInfo
- Publication number
- FR2512526A2 FR2512526A2 FR8116971A FR8116971A FR2512526A2 FR 2512526 A2 FR2512526 A2 FR 2512526A2 FR 8116971 A FR8116971 A FR 8116971A FR 8116971 A FR8116971 A FR 8116971A FR 2512526 A2 FR2512526 A2 FR 2512526A2
- Authority
- FR
- France
- Prior art keywords
- burner
- fuel
- combustion
- boiler
- movement
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/10—Under-feed arrangements
- F23K3/12—Under-feed arrangements feeding by piston
-
- 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
- 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
- F24H1/34—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side
- F24H1/36—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side the water chamber including one or more 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
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1845—Arrangement or mounting of combustion heating means, e.g. grates or burners using solid fuel
Landscapes
- 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)
- Solid-Fuel Combustion (AREA)
Abstract
Description
La présente invention, selon le brevet principal, concerne une chaudière à eau cnaude utilisant un combustible solide sous forme de granulats : granulés de houille, houchons, plaquettes ou briquettes diverses de charbon, de bois, de paille, de sciure etc... The present invention, according to the main patent, relates to a hot water boiler using a solid fuel in the form of aggregates: coal granules, houchons, various chips or briquettes of coal, wood, straw, sawdust, etc.
Les chaudières connues de l'art antérieur pouvantfonctionner avec ce genre de combustible posent des problèmes d'évacuation des cendres et du mâchefer ce qui entraîne un rendement calorifique médiocre et à des interventions manuelles fréquentes. The boilers known in the prior art that can operate with this type of fuel pose problems of evacuation of ash and clinker, which results in poor calorific efficiency and frequent manual interventions.
De plus leur alimentation par un système à vis d'archiméde estcouteux en réalisation, en fonctionnement et en force matrice.In addition their feeding by an archimedean screw system is expensive in production, in operation and in matrix force.
Le brevet principal a eu pour but de proposer une chau dière affranchie de ces inconvénients avec une série d'avantages alliant une conception simple et un rendement calorifique nettement supérieur notamment en faisant appel à une alimentation automatique, une combustion suractivée et une évacuation mécanique des résidus de combustion hors du brûleur. The main patent was intended to provide a boiler free from these drawbacks with a series of advantages combining a simple design and a significantly higher calorific efficiency in particular by using automatic feed, over-activated combustion and mechanical evacuation of residues combustion outside the burner.
La présente addition a pour but notamment de perfectionner l'alimentation automatique en combustible en ajoutant un piston de préalimentation actionné par le piston d'introduction du combustible dans le foyer, de rendre plus efficace l'activation de la combustion par un supplément d'entrée d'air au dessus du brûleur, et une modification du déflecteur au-dessus du foyer lequel est composé d'une grille à lamelles démontables en matériaux à forte inertie calorifique en vue d'une meilleure combustion des gaz et réduire les fumées et l'encrassage. The purpose of the present addition is in particular to improve the automatic fuel supply by adding a pre-supply piston actuated by the piston for introducing the fuel into the furnace, to make combustion activation more efficient by an additional input. of air above the burner, and a modification of the deflector above the hearth which is composed of a grate with removable lamellae made of materials with high calorific inertia for a better combustion of the gases and reducing the fumes and fouling.
Les caractéristiques et avantages de l'additif à l'invention apparaîtront à la lecture de la description d'un exemple de réalisation, et à l'examen des dessins annexés correspondants. The characteristics and advantages of the additive to the invention will appear on reading the description of an exemplary embodiment, and on examining the corresponding attached drawings.
- la figure 1 est une vue en coupe de la trémie de combustible et du dispositif d'alimentation à double piston. - Figure 1 is a sectional view of the fuel hopper and the double piston supply device.
- la figure 2 est une vue en coupe de la chaudière, montrant notamment le brûleur et la grille supérieure du foyer. - Figure 2 is a sectional view of the boiler, showing in particular the burner and the upper grate of the hearth.
A - Selon une particularité de l'additif à l'invention, le mécanisme d'alimentation comprend, selon figure 1 : un couloir supérieur de préalimentation 2, à la base de la trémie, à l'intérieur duquel circule un pousseur 3, lequel a une conformation qui prévoit un espace entre sa face supérieure et la voûte du couloir 2, lui permettant de traverser la colonne de combustible sortant de la trémie, sans coincement. Le mouvement du pousseur 3 est transmis par le piston d'introduction 6, la course du pousseur 2 étant limitée vers l'avant par des butées 4. Le mouvement avant du pousseur refoule le combustible vers une cavité 5 qui communique avec le couloir d'introduction 7. A - According to a feature of the additive to the invention, the feed mechanism comprises, according to FIG. 1: an upper pre-feed passage 2, at the base of the hopper, inside which a pusher 3 circulates, which has a conformation which provides a space between its upper face and the vault of the corridor 2, allowing it to pass through the column of fuel leaving the hopper, without jamming. The movement of the pusher 3 is transmitted by the introduction piston 6, the stroke of the pusher 2 being limited towards the front by stops 4. The front movement of the pusher delivers the fuel to a cavity 5 which communicates with the passage of introduction 7.
Lorsque le piston d'introduction 6 est en position repos, soit fin de course avant, sa tablette horizontale 10 sert de fond à la cavité 5 et reçoit la dose de combustible refoulée par le pousseur 3. When the introduction piston 6 is in the rest position, ie end of travel, its horizontal shelf 10 serves as the bottom of the cavity 5 and receives the dose of fuel delivered by the pusher 3.
La section du piston d'introduction 6 correspond, au jeu de fonctionnement près, à la section du couloir 7 dans lequel il se déplace. The section of the introduction piston 6 corresponds, apart from the operating clearance, to the section of the passage 7 in which it moves.
En fin de course avant, le piston 6 est positionne à l'entrée du brûleur 8 et obture totalement cet orifice. At the end of the front stroke, the piston 6 is positioned at the inlet of the burner 8 and completely closes this orifice.
Dans le mouvement arrière du piston 6, la tablette 10 ouvre totalement la base de la cavité 5. La dose de combustible contenu dans cette cavité se déverse dans le couloir 7, devant le piston, pendant que le pousseur 3 recule pour découvrir l'orifice de la trémie. In the rear movement of the piston 6, the tablet 10 fully opens the base of the cavity 5. The dose of fuel contained in this cavity pours into the passage 7, in front of the piston, while the pusher 3 moves back to discover the orifice hopper.
Dans le mouvement avant du piston 6, celui-ci refoule, vers l'entrée du brûleur, le combustible déversé dans le couloir 7. In the forward movement of the piston 6, the latter discharges, towards the inlet of the burner, the fuel discharged into the passage 7.
Le mouvement avant du pousseur 3 commence à s'effectuer, par l'intermédiaire de la butée avant 4, lorsque la tablette 10 a complètement obturé la base de la cavité 5. Le pousseur 3 refoule à nouveau une dose de combustible dans cette cavité.The forward movement of the pusher 3 begins to take place, by means of the front stop 4, when the tablet 10 has completely closed the base of the cavity 5. The pusher 3 again delivers a dose of fuel into this cavity.
L'ensemble des éléments constitutifs du mécanisme d'alimentation ainsi que le ventilateur d'activation 15 de la combustion sont montés sur un châssis se raccordant à l'orifice du brûleur 8, par boulons ou autre fixation. The assembly of the constituent elements of the feed mechanism as well as the combustion activation fan 15 are mounted on a frame connecting to the orifice of the burner 8, by bolts or other fixing.
La trémie est monte sur pieds réglables et son orifice vient s'ajuster dans l'ouverture supérieure du couloir 2. The hopper is mounted on adjustable feet and its orifice adjusts in the upper opening of corridor 2.
B - Une autre particularité de l'additif à l'invention concerne l'amélioration de la combustion dans-le foyer de la chaudière, selon figure 2. B - Another particular feature of the additive to the invention relates to the improvement of combustion in the hearth of the boiler, according to FIG. 2.
D'abord, grâce à un apport d'air ventilé horizontalement, côté entrée brûleur, à sa partie supérieure, par une rampe de ventilation 26 en liaison avec la cavité d'admission d'air 14, située sous le brûleur, par des tubes verticaux 27 placés de part et d'autre de l'entrée du brûleur. First, by means of a horizontally ventilated air supply, on the burner inlet side, at its upper part, by a ventilation ramp 26 in connection with the air intake cavity 14, located under the burner, by tubes vertical 27 placed on either side of the burner inlet.
Ensuite, par adjonction, sous le déflecteur 24, placé au sommet du foyer, d'une grille à lamelles démontables 28, en acier, fonte ou tout autre matériau approprié, de forte inertie calorifique, à travers lesquelles les gaz de combustion circulent et continuent de brûler. Then, by adding, under the deflector 24, placed at the top of the hearth, a grid with removable strips 28, made of steel, cast iron or any other suitable material, of high calorific inertia, through which the combustion gases circulate and continue to burn.
Ces deux dispositifs permettent une post-combustion des gaz imbrûlés et des fumées, ils évitent les fumées polluantes, l'encrassage prématuré de la chaudière et améliorent son rendement. These two devices allow post-combustion of unburnt gases and fumes, they avoid polluting fumes, premature fouling of the boiler and improve its efficiency.
Claims (7)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8116971A FR2512526A2 (en) | 1981-09-04 | 1981-09-04 | Solid fuel boiler - has reciprocating piston to supply fresh fuel and remove ash |
US06/372,010 US4474117A (en) | 1981-04-28 | 1982-04-26 | Boiler using a solid granulated fuel |
EP82400754A EP0064456A1 (en) | 1981-04-28 | 1982-04-27 | Heater using combustible granulated solids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8116971A FR2512526A2 (en) | 1981-09-04 | 1981-09-04 | Solid fuel boiler - has reciprocating piston to supply fresh fuel and remove ash |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2512526A2 true FR2512526A2 (en) | 1983-03-11 |
Family
ID=9261953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8116971A Pending FR2512526A2 (en) | 1981-04-28 | 1981-09-04 | Solid fuel boiler - has reciprocating piston to supply fresh fuel and remove ash |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2512526A2 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE576133C (en) * | 1932-03-16 | 1933-05-08 | Gustav Hoennicke | Small incinerator for all kinds of waste |
FR1050848A (en) * | 1951-02-15 | 1954-01-11 | Central heating boiler | |
FR1104192A (en) * | 1954-05-04 | 1955-11-17 | Improvements made to continuous firing boilers, in particular those intended for central heating installations | |
FR1290037A (en) * | 1961-05-26 | 1962-04-06 | Automatic type boiler with permanent scrubbing for central heating and hot water production | |
GB1027442A (en) * | 1962-07-06 | 1966-04-27 | Seccacier | An automatic boiler for central heating and hot water production |
FR2385991A1 (en) * | 1977-03-29 | 1978-10-27 | Anvar | Solid fuel boiler for agricultural use - has inclined feed plate with pusher between fuel hopper and grate |
EP0019386A2 (en) * | 1979-05-02 | 1980-11-26 | Atlantic Richfield Company | Method and apparatus for flame modification to reduce NOx-emissions |
-
1981
- 1981-09-04 FR FR8116971A patent/FR2512526A2/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE576133C (en) * | 1932-03-16 | 1933-05-08 | Gustav Hoennicke | Small incinerator for all kinds of waste |
FR1050848A (en) * | 1951-02-15 | 1954-01-11 | Central heating boiler | |
FR1104192A (en) * | 1954-05-04 | 1955-11-17 | Improvements made to continuous firing boilers, in particular those intended for central heating installations | |
FR1290037A (en) * | 1961-05-26 | 1962-04-06 | Automatic type boiler with permanent scrubbing for central heating and hot water production | |
GB1027442A (en) * | 1962-07-06 | 1966-04-27 | Seccacier | An automatic boiler for central heating and hot water production |
FR2385991A1 (en) * | 1977-03-29 | 1978-10-27 | Anvar | Solid fuel boiler for agricultural use - has inclined feed plate with pusher between fuel hopper and grate |
EP0019386A2 (en) * | 1979-05-02 | 1980-11-26 | Atlantic Richfield Company | Method and apparatus for flame modification to reduce NOx-emissions |
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