EP1850071A2 - Four avec une amenée d'air primaire et procédé de fonctionnement d'un tel four - Google Patents

Four avec une amenée d'air primaire et procédé de fonctionnement d'un tel four Download PDF

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Publication number
EP1850071A2
EP1850071A2 EP07003261A EP07003261A EP1850071A2 EP 1850071 A2 EP1850071 A2 EP 1850071A2 EP 07003261 A EP07003261 A EP 07003261A EP 07003261 A EP07003261 A EP 07003261A EP 1850071 A2 EP1850071 A2 EP 1850071A2
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EP
European Patent Office
Prior art keywords
combustion chamber
furnace
feed
oven
fuel
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
EP07003261A
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German (de)
English (en)
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EP1850071B1 (fr
EP1850071A3 (fr
Inventor
Johann Rainer
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Individual
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Individual
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Publication of EP1850071A2 publication Critical patent/EP1850071A2/fr
Publication of EP1850071A3 publication Critical patent/EP1850071A3/fr
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Publication of EP1850071B1 publication Critical patent/EP1850071B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • 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
    • F24B5/021—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves combustion-air circulation
    • F24B5/023—Supply of primary air for combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • F23B50/12—Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone the fuel being fed to the combustion zone by free fall or by sliding along inclined surfaces, e.g. from a conveyor terminating above the fuel bed
    • 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
    • F23K3/22—Controlling thickness of fuel bed
    • 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
    • F24B13/00—Details solely applicable to stoves or ranges burning solid fuels 
    • F24B13/04—Arrangements for feeding solid fuel, e.g. hoppers 

Definitions

  • the invention relates to a furnace having a combustion chamber designed for burning solid fuels and a combustion chamber opening into the combustion chamber and serving for supplying a combustion gas into the combustion chamber, and a method for operating such a furnace.
  • pellets Such ovens are known. They are used today as stoves, but also as radiators for heating whole apartments and houses. As solid fuels, the known wood logs are now increasingly being replaced by compacts of granular combustible material, so-called pellets. These pellets have the advantage that they can be produced in a uniform shape, for example in the form of spheres or cylinders with a diameter of about 6 mm, which ensures uniform combustion with uniform heat development.
  • ambient air of the furnace is usually used, but it can also be used with additional oxygen enriched air as combustion gas, or other oxygen-containing gas mixtures.
  • the solid fuels are introduced into the furnace, ignited, and burned while supplying the combustion gas.
  • combustion gas is distinguished in such ovens between a so-called primary air and a so-called secondary air.
  • Primary combustion gas combustion promotes the immediate combustion of imported solid fuels, but usually does not complete, but leaves residues such as ash or partially unburned particles in the furnace.
  • the partially unburned particles are post-combusted in a so-called secondary combustion while supplying the so-called secondary air. While the secondary air is usually introduced into an exhaust air portion of the furnace, the primary air supply is usually supplied near a bottom portion of the furnace.
  • the invention has for its object to provide a furnace which allows improved primary combustion, especially during continuous operation.
  • the supply of the combustion gas is a primary air supply in the above sense, and in the following, the term primary air is used as a synonym for combustion gas is used, although out of the air actually the above-mentioned alternatives for the combustion gas can be used.
  • the primary air supply according to the invention with a known primary air supply, e.g. can be combined from bottom to top by a grate, but it can also be the entire primary air introduced with the oriented in gravity direction velocity component in the firebox.
  • 70% or more, preferably 80% or more, in particular 90% or more of the supplied primary air flows into the furnace with a velocity component oriented in the direction of gravity.
  • a portion of the primary air supplied may be diverted from the supply line into a feeder for charging the solid fuel furnace to its burn back guard.
  • the combustion gas can be actively injected as compressed gas into the combustion chamber, but it can also be "passive” sucked by the suction generated by the exhaust air suction (negative pressure) through the supply line into the furnace. For the latter variant, it is not necessary to provide injection nozzles with upstream funding.
  • the feed line expediently has a feed section whose feed direction has a vertically downwardly directed component when set up in the operating position, wherein the feed section has an opening region of the feed line includes.
  • the primary air automatically receives its velocity component in the direction of gravity by the flow generated in the feed section.
  • the feed section comprises a portion immediately upstream of the mouth region (with).
  • the primary air flowing into the combustion chamber receives a further improved flow profile.
  • the supply line to a feed pipe which extends with an angle of inclination to the horizontal of greater than zero in the furnace.
  • a structurally simple primary air supply is guaranteed.
  • the pipe layer can be suitably arranged between the mouth region of the feed line and an edge region of the furnace.
  • the mouth region of the feed line is formed at one end of a vertical pipe section formed in particular by an angled part of the feed pipe.
  • the primary air can first be directed inwardly from the edge region of the furnace, and finally introduced into the combustion chamber at a velocity substantially entirely in the direction of gravity.
  • the combustion chamber can also be fed with the solid fuels through the feed tube from a feed device.
  • the supply of the furnace with primary air and the fuels can be carried out by the same component.
  • the charging with fuel via an at least partially within the feed tube, in particular coaxially formed inner tube. Since the pellets have a comparatively high density, a spatially separate supply of primary air and fuels ensures a sufficiently high flow rate of the primary air.
  • the supply line at least partially by a between the outer boundary surface of the inner tube and the inner boundary surface of the feed tube is formed in particular as an annular gap formed gap. This results in an already spatially distributed mouth area for the primary air supply in the immediate vicinity of the mouth of the fuel supply.
  • the feed tube protrudes further into the interior than the inner tube.
  • the inner tube has at least one opening at a section of the feed line upstream of the mouth region, which also permits a supply of a portion of the combustion gas within the inner tube. This provides a burn back protection for the feeder. It prevents the flames from hitting far into the inner tube and igniting the fuel therein.
  • the invention advantageously provides that the mouth region of the supply line is arranged above a bottom region of the combustion chamber, that between the bottom region and the mouth region, a combustion chamber for receiving the solid fuels is defined, wherein the furnace for burning one into the combustion chamber absorbed fuel quantity from the mouth region of the supply line in the direction of the bottom region of the furnace is operable.
  • the mouth region of the supply line should therefore not be arranged directly above the bottom region of the combustion chamber, but further above, in order to define a combustion chamber between itself and the bottom region.
  • the combustion chamber is an area of the combustion chamber in which the pellets are actually burned. Since the pellets are usually not introduced by hand, but by a feeder in the furnace, the shape of the combustion chamber takes on substantially the shape of a pile of fuel heaped up in the furnace.
  • Another aspect of the invention relates to a particularly manually operable device for power control of the furnace, which is operable to vary the volume of a combustion chamber provided to the solid fuel.
  • Conventional manual power control devices consist essentially in that the supplied in a conventional manner primary air flow is increased or decreased by moving the grate.
  • the power control device according to the invention aims to make the aforementioned "fuel pile" smaller or larger.
  • the power control device has at least one control part which at least partially delimits the combustion chamber and can be moved to change the combustion chamber volume.
  • the movable control part can be changed in a simple manner by shifting a combustion chamber boundary, the volume of the combustion chamber.
  • a mouth opening of the charging device by means of which the combustion chamber can be charged with the solid fuels, forms an upper boundary of the combustion chamber.
  • the weight of the advancing fuels is used to limit the "fuel pile" in the combustion chamber upwards.
  • control part is substantially plate-shaped and is arranged in a basic position near the bottom region of the furnace, in particular substantially aligned parallel thereto.
  • the plate-shaped control part thus represents a base on which the "fuel pile" can form.
  • the upper boundary of the combustion chamber formed by the mouth opening of the charging device can be left fixed in space.
  • the power control device expediently has an actuating device for moving the control part, which can bring about the movement in particular steplessly and in particular parallel to the direction of gravity.
  • the power control device can be functionally easily operated. In particular, any desired performance of the furnace can be adjusted.
  • the actuating device has a rod-shaped part connected to the control part, which causes the movement of the control part by a movement along its longitudinal direction, and a second, operable from outside the furnace sliding part, wherein a sliding movement of the sliding part via a coupling mechanism in the movement of the rod-shaped part is implemented.
  • the power control device can be particularly easily operated from outside the furnace.
  • the coupling mechanism may be based on an inclined plane along which the rod-shaped part is pushed upwards.
  • the area of the plate-shaped part and the distance between the plate-shaped part in the basic position and the mouth opening of the charging device are so on the dimensions of the furnace tuned that a burning, the combustion chamber filling amount of fuel sufficient to provide a maximum furnace capacity. That is, the plate-shaped part is in the basic position substantially near the bottom of the furnace. In this position, the power control device is then set to maximum power. By moving the plate-shaped part upwards, the combustion chamber becomes smaller and the furnace output decreases, while at the same time the primary air supply remains optimal.
  • the amount of fuel filling the combustion chamber results automatically by charging the combustion chamber via the charging device. So no longer nachkorrigiert by hand, but the "right pile of fuel” results automatically depending on the set combustion chamber.
  • Another aspect of the invention relates to a particularly designed as a ball valve switching device for the furnace, the switch-off is based on an interruption of the fuel feed.
  • a switch-off mechanism is provided which automatically triggers the switch-off effect when the temperature of a reference region of the switch-off mechanism reaches a predetermined maximum temperature.
  • an additional fuse is provided which, in the event of a malfunction, e.g. overheating the feed tube of the feeder (the inner tube) inhibits further fuel supply.
  • the switch-off mechanism has a prestressed spring and a holding part forming the reference region for the spring, the holding effect of which decreases on reaching the maximum temperature and / or is canceled out.
  • the switch-off mechanism is already in a standby position and can be triggered at short notice in the application.
  • the holding part is a liquid-filled temperature-sensitive container.
  • the holding effect can be easily maintained as long as the container is intact. As soon as the liquid can leak, the holding effect is reduced and the prestressed spring can relax and cause the breaking action.
  • Another aspect of the invention relates to a separate ignition opening to the furnace, which only serves the particular manual ignition of the furnace, and is designed accordingly with only a small cross-section. So must not be opened to ignite the furnace every time a main access opening.
  • the separate ignition opening is expediently provided with a releasable cover, and an ignition cylinder of the ignition mechanism can be fitted in a receiving region of the separate opening in such a way that its firing tip extends into an ignition region of the combustion chamber, in particular near an opening region of the supply line.
  • an ignition cylinder of the ignition mechanism can be fitted in a receiving region of the separate opening in such a way that its firing tip extends into an ignition region of the combustion chamber, in particular near an opening region of the supply line.
  • the cover is formed by a zündferne side of the ignition cylinder itself.
  • the ignition cylinder can be removed with a hand movement, ignited, and introduced into the ignition opening.
  • Such an ignition device can also be advantageously used in a non-manual manner.
  • the invention also relates to a method for operating a furnace, in particular a furnace according to one of the preceding claims, in which at least a part of the combustion gas filled as primary combustion gas into a furnace furnace has a velocity component in the direction of gravity.
  • the furnace can be advantageously operated so that the combustion chamber of the furnace along a at least partially parallel to the Verbrennungsgaszu 1500weg located Beschickungsweg is fed with solid fuel.
  • the furnace is further advantageously operated so as to manually reduce the volume of a burning area of the solid fuel adjacent to the feed path, if the power of the furnace is to be lowered, and increased if the power of the furnace is to be increased.
  • the furnace is operated so that a fuel feed of the combustion chamber is automatically interrupted when the temperature of a reference region arranged along the feed path reaches a predetermined maximum temperature.
  • the furnace may be suitably ignited by igniting an amount of fuel accumulated in the furnace furnace from a separate ignition path provided in a region located near the end of the combustion gas supply path.
  • Fig. 1 shows a longitudinal section of a furnace according to the invention in an overall view.
  • the furnace has a round cross-section, and the longitudinal section is taken along the longitudinal direction by a diameter of the round furnace.
  • the central area of the furnace is determined by a combustion chamber 10 designed to burn solid fuels and whose inner walls are clad with refractory materials.
  • the outer walls of the furnace are formed in a known manner from heat-storing materials.
  • the stove is on feet 5.
  • an exhaust duct 8 is provided, which is formed helically in this embodiment. So the combustion air can cool down, and their heat can be used in addition by the helical exhaust air limiting limiting helical surfaces are designed from heat exchanger.
  • a feeder 70 is provided over which the firebox 10 is provided with solid fuels, e.g. Pellets, can be charged. This is better seen in Fig. 2, where the solid fuels 2, 3 are shown with.
  • solid fuels e.g. Pellets
  • the charging device 70 comprises a container 76 which can be filled from outside the furnace and can be pivoted by means of a piston-cylinder device 74 between a horizontal position 76A and an upright position 76B, from the can be fed from the furnace 10 via a feed pipe 60 with the solid fuels 3.
  • a switch-off device 72 is provided immediately behind the outlet of the container 76, which is designed in this embodiment as a ball valve and by means of which the fuel feed can be interrupted.
  • the primary air from an outer portion of the furnace along the edge of the furnace in a conduit 31 is guided upwards, and in terms of height to a mouth region 40 of the feed line 30 addition.
  • the duct 31 opens into a chamfered end of a feed pipe 50 which extends at an angle ⁇ to the horizontal in the combustion chamber 10, which in this embodiment about 60 ° is.
  • the feed tube 50 is penetrated by the feed tube 60 coaxially, whereby the latter opposite the feed tube 50 forms an inner tube 60.
  • the primary air is thus introduced into the combustion chamber 10 via an annular gap 58 in a feed direction s in the direction of the mouth region 40 of the feed line 30.
  • the primary air supplied through the annular gap 58 has a speed component oriented in the direction of gravity g, which corresponds to the component s g of the feed direction s.
  • both pipes, the feed tube 50 and the inner tube 60 buckle in such a way that their end pieces are parallel to the direction of gravity g. This is shown enlarged in FIG.
  • the feed line 30 is designed so that the supplied primary air has a velocity component v g aligned in the direction of gravity g when it is fed into the furnace.
  • FIG. 1 shows by way of example such a velocity component arrow v g .
  • the feed direction s of the feed line 30 has a vertically downward component s g at least in a feed section 32, which not only comprises the mouth region 40 of the feed line 30 in this embodiment, but also an upstream directly in the mouth region 40 Section 36.
  • the primary air thus flows in an orifice region 40 of the supply line 30 into the combustion chamber 10 with a velocity profile which is marked by a main direction which runs in the direction of gravity g.
  • a combustion chamber 20 is defined (see Fig. 2).
  • a fuel cluster 2 accumulated in the combustion chamber 20 exhibits a different combustion behavior than conventional primary air supply systems.
  • the primary air supply conventionally takes place through the bottom region 12 of the combustion chamber or directly at the level of the bottom region 12 from the side.
  • a fuel cluster 2 shown in FIG. 2 therefore burns from bottom to top in conventional ovens.
  • the fuel cluster 2 shown in Fig. 2 in the primary air supply pipe 30 according to the present invention burns from the orifice 40 of the supply pipe 30 toward the bottom portion 12, that is, at the same time. from top to bottom. An improved combustion is achieved.
  • the embodiment shown is designed so that the largest possible proportion of the primary air (as already explained above) is introduced through the feed line 30 according to the invention in the combustion chamber 10. Only a minor proportion of 40% or less, preferably 20% or less, in particular 10% or less of the supplied primary air should not be supplied to the mouth region 40 of the feed line 30 via the annular gap 58, but previously by at least one shown in Fig. 3 Opening 66 in the inner tube 60 into the interior of the feed pipe 60 and be introduced via the feed pipe 60 into the combustion chamber 10 to prevent in the manner explained above, that flames can beat into the feed pipe 60.
  • This diverted smaller primary air fraction does not act as an effective combustion gas due to the high flow resistance through the solid fuels 3, but essentially serves the Flammenschmannverhi the.
  • a horizontal ring pipe-shaped portion 6 for supplying secondary air is provided in a central area.
  • the annular portion appears as a straight tube, but in fact the portion 6 is formed as a ring.
  • exit holes 7 are provided, from which the secondary air can flow.
  • the secondary air supply effects afterburning of microparticles contained in the oven air.
  • reference numeral 16 is still a separate ignition opening indicated, which will be described below with reference to FIG.
  • the feed line 30 according to the invention is shown in Fig. 3 again in more detail.
  • the annular gap 58 between an outer surface 62 of the feed tube 60 and an inner circumferential surface 52 of the feed tube 50 is formed.
  • the Feed pipe 60 already ends just behind the bent portion to form an orifice portion 80 of the feeder 70, while the feed tube 50 extends in the form of vertically bent pipe section 54 beyond the mouth portion 80 of the feeder 70 also down to further down the end 56th the feed tube 50 to form the mouth region 40 of the supply line 30.
  • the mouth portion 40 coincides therewith with an upper portion of a fuel furnace 2 formed in the combustion chamber 20, and the primary air can promote the primary combustion of the fuel cluster 2, and not previously escaping too quickly due to that of the Exhaust air generated suction in the direction of the exhaust duct 8.
  • FIG. 3 shows, by way of example, the velocity vector v of a fuel particle located in the mouth region 40 of the feed line 30, as well as its velocity component v g aligned in the direction of gravity g .
  • the velocity component v g promotes combustion of the fuel cluster 2 in the gravity direction g.
  • the power control device 22 is composed of a serving as a control part circular plate 24 and an actuator 26, to which it is coupled.
  • the circular plate 24 can be oriented from the basic position shown in FIG. 4, in which it is aligned parallel to the bottom region 12 of the combustion chamber 10 and close to the bottom region 12, in the direction opposite to the direction of gravity g on the orifices 40 of the supply line 30 or 80 of the feed tube 60 to be moved.
  • a horizontal slide 27 which has a wedge 28 on one end, on which a flange 25.1 of a vertically arranged rod 25 is provided so that upon insertion of the slider 27 in the direction of the furnace, the rod 25 of the inclined plane of the wedge 28 is pushed upward following.
  • the rod 25 penetrates the round disc 24 and is fixed thereto, so that upon insertion of the slider 27, the circular disc 24 is moved upward.
  • the power control device shown in this embodiment is a manual type and is actuated by a user grasping a handle 29 disposed on the other side of the slider 27, sliding the slider 27 inwardly, thereby pushing the circular plate 20 upwardly. Conversely, to lower the circular plate 20, the user simply pulls the slider 27 out of the oven again. To an excessive To prevent withdrawal, a flange 25.1 is provided at the pointed end of the wedge 28, which engages in the flange 26.1 of the rod 25 and prevents further withdrawal of the slider 27 as to reach the initial position.
  • the power controller 22 operates. It can be seen from Fig. 4 that the circular plate 24 forms the base surface A24 of the combustion chamber 20. As can be seen, the fuel cluster 2 accumulated in the combustion chamber 10 by loading the charging device 70 is located substantially entirely on the circular plate 24 of the power control device 22, ie in the combustion chamber 20. The orifice 80 of the inner tube 60 or the charging device 70 forms while an upper boundary of the combustion chamber 20th
  • the distance between the upper boundary formed by the mouth region 80 and the circular plate 24 is designated by h, and the fuel cluster 2 formed on the circular plate 24 has essentially the shape of a cone with a flattened tip.
  • the volume V of the combustion chamber 20 in the basic position can thus be specified as approximately 1/3 ⁇ A24 ⁇ h. However, it is not fixed, but can be reduced from the basic position by the round plate 24 is pushed by actuation of the actuator 26 upwards, and thus changes the distance h. If the furnace output is to be reduced, the round plate 24 is pushed upwards, the volume of the combustion chamber 20 is reduced and the furnace output drops.
  • the primary air is introduced through the supply line 30 and the mouth region 40, regardless of the size of the fuel cluster 2 in its upper region, so that a reliable primary combustion is ensured.
  • a locking mechanism is provided, which in the present embodiment of a high frictional resistance between the flange 25.1 of the rod 25 and the wedge 28 consists.
  • Another advantage of the power control device 22 according to the invention consists in its additional effect for the compression of unburned residues (ash). Because when Wiederenksenken the round plate 24 (power increase) ash that has accumulated on the bottom portion 12 below the circular plate 24, automatically compressed, and thus takes up less space in the firebox 10. To enhance the compression effect can also lateral arms (not shown) on the round Plate 24 may be mounted, by means of which the ash is also compressed in a region which lies laterally outside the circular plate 24.
  • FIG. 5 also shows schematically the functional principle of a switch-off mechanism 74 according to the invention for the switch-off device 72, which can close the feed tube 60.
  • the switch-off mechanism 74 provides an additional safeguard if, due to a power failure, flames nevertheless enter the inner tube 60, ignite the fuel 3 located there and cause a spread of fire outside the combustion chamber 10. In such a case, the switch-off device 72 is to be actuated by triggering the switch-off mechanism.
  • the switch-off mechanism 74 according to the invention is provided, whose standby position is shown in Fig. 5a, and the tripped state is shown in Fig. 5b.
  • the switch-off effect is to be triggered if, for example, by the formation of fire in the inner tube, the temperature within the switch-off device reaches a predetermined maximum temperature T c .
  • a prestressed in the standby position (Fig. 5a) spring 78 is provided, which would trigger the Ausschaltrial by relaxation, they would not be held by a holding part 76.
  • the holding part 76 is formed in the schematic representation of Fig. 5 as a ring cylinder container 76 which is filled with a liquid, such as water.
  • the container 76 itself is sensitive to temperature, for example, when it becomes deformable on reaching the predetermined maximum temperature T c or becomes permeable to the liquid therein. For T ⁇ T c , as shown in Fig.
  • the container 76 is compressible or its contents can flow out, so that the holding effect of the container is released and the prestressed spring 78 can relax in the state 78 ' because the container 76 is deformed to form 76 'and the spring force is no longer counteracts.
  • the automatic triggering of the switch-off effect is symbolized in FIGS. 5a and 5b by a displacement of a cylinder upward.
  • FIG. 6 also illustrates an ignition mechanism according to the invention, which is characterized in that an ignition cylinder 17 is introduced into the outer wall of the combustion chamber 10 through a separate ignition opening 16. The ignition takes place via a firing tip 19 at the inside end of the ignition cylinder 17.
  • the ignition opening 16 and the length of the ignition cylinder 17 is provided so that the ignition is close the mouth area 14 of the Supply line 30 for the primary air, ie near the tube end 56 of the feed tube 50 is made possible.
  • the ignition mechanism is purely manual, but it could also be designed electrically and / or be operable in both modes.
  • the primary air is introduced from above into the firebox, i. with a velocity component of the combustion gas in the direction of gravity. At least in sections parallel, but substantially spatially separated, the furnace is subjected to solid fuel.
  • the primary air and the solid fuels pass through adjacent mouth areas in the furnace chamber of the furnace and the primary air we supplied so where new unburned fuel to be burned.
  • the performance of the furnace is controlled manually by changing the volume of the combustion region (the piled fuel pile).
  • the ignition takes place near the mouth region of the supplied primary air through a separately provided ignition path.
  • the oven is automatically shut off when a predetermined maximum temperature is reached, so that when a feared spread of the flame out of the oven automatically the fuel supply is interrupted.

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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)
  • Solid-Fuel Combustion (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Details (AREA)
EP07003261.0A 2006-04-25 2007-02-15 Four avec une amenée d'air primaire et procédé de fonctionnement d'un tel four Active EP1850071B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006019057A DE102006019057A1 (de) 2006-04-25 2006-04-25 Ofen mit Primärzuluft und Verfahren zum Betreiben eines solchen Ofens

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EP1850071A2 true EP1850071A2 (fr) 2007-10-31
EP1850071A3 EP1850071A3 (fr) 2015-01-14
EP1850071B1 EP1850071B1 (fr) 2019-05-22

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Cited By (2)

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FR2993346A1 (fr) * 2012-07-10 2014-01-17 Ardante Chaudiere a granule ou a pellet a combustion cyclonique
WO2015121848A1 (fr) * 2014-02-17 2015-08-20 Gruppo Piazzetta S.P.A. Poêle pour chauffage à accumulation ou dégagement lent de chaleur

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DE102007047583B4 (de) * 2007-10-04 2010-05-06 Hans Rainer Wärmespeichersystem
DE102013004370A1 (de) * 2013-03-12 2014-09-18 Johann Rainer Wärmeübertragungsvorrichtung und damit ausgestatteter Ofen
DE102021113565A1 (de) 2021-05-26 2022-12-01 Schiedel Gmbh Befüllstutzen für eine Feststofffeuerstätte, Befüllstutzensystem, Feststofffeuerstätte und Feststofffeuerstättensystem

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US4517903A (en) * 1983-06-01 1985-05-21 Hunter Enterprises Orillia Limited Solid fuel furnace
DE8507501U1 (de) * 1985-03-14 1985-05-09 Schallenberg Feuerungstechnik GmbH Stahlheizkesselbau Kohle- und Ascheförderanlagen, 4530 Ibbenbüren Heizkessel für Festbrennstoffe
AU660164B2 (en) * 1990-12-17 1995-06-15 Dovetech, Inc. Balanced pressure solid fuel heating unit
AT412020B (de) * 2001-10-11 2004-08-26 Rainer Johann Ofen zum verbrennen von briketts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2993346A1 (fr) * 2012-07-10 2014-01-17 Ardante Chaudiere a granule ou a pellet a combustion cyclonique
EP2685158A3 (fr) * 2012-07-10 2015-04-22 Ardante Chaudière à granulé ou à pellet à combustion cyclonique
WO2015121848A1 (fr) * 2014-02-17 2015-08-20 Gruppo Piazzetta S.P.A. Poêle pour chauffage à accumulation ou dégagement lent de chaleur

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EP1850071B1 (fr) 2019-05-22
DE102006019057A1 (de) 2007-10-31
EP1850071A3 (fr) 2015-01-14

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