EP1002993A2 - Boiler for liquid fuels - Google Patents

Boiler for liquid fuels Download PDF

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Publication number
EP1002993A2
EP1002993A2 EP99890351A EP99890351A EP1002993A2 EP 1002993 A2 EP1002993 A2 EP 1002993A2 EP 99890351 A EP99890351 A EP 99890351A EP 99890351 A EP99890351 A EP 99890351A EP 1002993 A2 EP1002993 A2 EP 1002993A2
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EP
European Patent Office
Prior art keywords
heating surface
boiler
heating
boiler according
return
Prior art date
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Granted
Application number
EP99890351A
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German (de)
French (fr)
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EP1002993B1 (en
EP1002993A3 (en
Inventor
Josef Goiginger
Anton Kreuleder
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WINDHAGER ZENTRALHEIZUNG AG
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WINDHAGER ZENTRALHEIZUNG AG
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Priority to AT99890351T priority Critical patent/ATE232948T1/en
Priority to SI9930265T priority patent/SI1002993T1/en
Publication of EP1002993A2 publication Critical patent/EP1002993A2/en
Publication of EP1002993A3 publication Critical patent/EP1002993A3/en
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Publication of EP1002993B1 publication Critical patent/EP1002993B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/02—Structural details of mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/04—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying action being obtained by centrifugal action
    • F23D11/08—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying action being obtained by centrifugal action using a vertical shaft
    • 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
    • F24H1/24—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
    • F24H1/282—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 with flue gas passages built-up by coaxial water mantles
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/50—Water heaters for central heating incorporating heaters for domestic water incorporating domestic water tanks

Definitions

  • the present invention relates to a boiler for liquid fuels with a burner, Heating surfaces and a flue gas outlet according to the preamble of claim 1.
  • Boilers are known in which vertically arranged cylindrical heating surfaces are provided are. Such boilers are operated with evaporator burners, which are below the heating surfaces are arranged in a separate combustion chamber. The combustion air is replaced by one provided blower introduced. Between the combustion chamber and that through the heating surfaces enclosed space, an annular guide member is arranged. With such a The boiler transfers heat from the flames or flue gas to the heating surfaces primarily by gas radiation and is therefore of moderate efficiency. Furthermore, you can with such boilers, at least in certain operating points, form areas in which there is no flow, so that the heat transfer on the heating surfaces deteriorates further becomes.
  • boilers are known in which fuels prior to ignition and before the actual one Start of combustion within a hollow body, a so-called flame generator, in gaseous state can be mixed with combustion air and through openings in it Exit the flame generator to be ignited and burned.
  • DE 42 25 749 A relates to an evaporation burner.
  • This burner uses fuel evaporated in a porous body and introduced into a cylindrical mixing tube.
  • This mixing tube is mixed with the combustion air.
  • Concentric outside a cylindrical body for deflecting the flames is arranged in the mixing tube.
  • the object of the present invention is to develop the boiler described above in such a way that that an efficient heat transfer on the heating surfaces and thus a high efficiency is achieved. Furthermore, the exhaust emissions, especially the nitrogen oxide emissions, be reduced. By achieving a high level of performance, a small installation space is required be made possible with great performance. At the same time, maintenance and repair work should be carried out be easy and unproblematic.
  • the particularly advantageous solution of the invention is mainly achieved in that the main part of the burner, namely the flame generator within the Heating area enclosed space is located.
  • the heat transfer can not only by convection and gas radiation but also by solid-state radiation, which leads to leads to significantly higher efficiency.
  • the premix burner is arranged below the flame generator is, and is releasably connected to a part of the boiler containing the heating surfaces.
  • the boiler according to the invention is easily disassembled for inspection and To be able to carry out maintenance work, so that the maintenance effort is reduced can.
  • the performance of the boiler according to the invention can be improved in that A guide body is provided above the flame generator, which is essentially concentric is formed with the flame generator. Due to the narrowing of the cross-section of the guide body an acceleration of the flue gas flow is achieved, so that an improved Heat transfer can be achieved on the heating surfaces.
  • a particular improvement in the flue gas flow can be achieved in that above the first heating surface is provided a deflecting body, and that radially outside the another heating surface is arranged in the first heating surface. In this way it is caused that the flue gases first flow upwards on the inside of the first heating surface, over which the upper edge of the first heating surface and continue on the outside of this Flow heating surface.
  • the speed can be reduced by suitably designed flow baffles the flow can be set so that an optimal heat transfer is possible.
  • a Heating return flows preferably tangentially in the upper area of the first heating surface. It is particularly preferred if the heating return has a main inflow opening in the first heating surface and a side inflow opening in a further heating surface, which is arranged outside the first heating surface.
  • the Heating return is usually introduced in the lower area of the boiler. With a boiler of the construction according to the invention, however, would do this in certain operating conditions Condensation can form. When initiating the return to the top of the Condensation can be safely avoided in all operating states. In particular The generation of a tangential speed component of the recycled boiler water to avoid local hypothermia. By the Most of the return flow is introduced into the inner heating surface, there is a risk of Hypothermia additionally minimized by the fact that the heating surface is particularly affected is great.
  • heating circuits are served by one boiler, for example one heating circuit for underfloor heating and another heating circuit for radiators.
  • Such heating circuits must be independent at a significantly different temperature level be controllable from each other. This can largely influence one another be excluded that preferably the heating return a first return and has a further return, which before entering the heating surface in the first return is introduced like a nozzle.
  • the first heating surface is designed as a cylindrical body, which is washed on the outside by boiler water is, and that post-heating surfaces are arranged tubularly above the first heating surface.
  • Such a structure is particularly suitable for compact, wall-hung central heating boilers with or without integrated water heater. With such a solution, the vertical Installation position can be exploited in an advantageous manner. Since such wall kettles primarily in Installed in the living area, come the special advantages of pre-evaporating Premix burner particularly important in terms of low noise emissions.
  • the boiler according to the invention consists of a frame 1 on which a premix burner is arranged is that of an evaporator unit 2 and a cylindrical one arranged above it Flame generator 4 exists.
  • the evaporator unit 2 is connected via an air supply line 3 Combustion air and via a fuel line, not shown, with a liquid Fuel supplied.
  • a flange plate 6 is arranged in the upper section of the frame 1.
  • a seal is designated 9.
  • FIGS. 2 and 3 is a preferred embodiment of the releasable connection between the Frame 1 and the upper part 5 of the boiler shown.
  • a seal that is not visible in FIGS. 2 and 3 is in one Groove inserted in the lower section of part 5.
  • a locking screw 10 serves the generate the necessary contact pressure, and to prevent the burner from being released accidentally.
  • a first heating surface 11 is provided, which is essentially is cylindrical and is arranged concentrically to the flame generator 4.
  • a guide body 12 is arranged on the first heating surface 11 is also cylindrical and concentric with the flame generator 4 and the first Heating surface 11 is arranged.
  • the guide body 12 is made of a heat-resistant and insulating Material made.
  • Radially outside and concentric to the first heating surface 11 is one arranged further heating surface 13, which is closed at the top by a deflecting body 14 is.
  • Flow baffles are in the gap 15 between the heating surfaces 11 and 13 16 arranged.
  • On the outer circumference of the further heating surface 13 there is a flue gas vent 17 attached.
  • the structure described above achieves the following function. That from the evaporator unit 2 outflowing fuel-air mixture is in the flame generator 4th completely evaporated and released to the outside and burned.
  • the smoke gases flow along the arrow 18 first along the inner surface of the first heating surface 11 upwards.
  • the guide body 12 causes a narrowing of the flow cross section and an acceleration the flow reached.
  • the deflection body 14 directs the flow outwards back so that it fits into the gap 15 between the first heating surface 11 and the further heating surface 13 flows down.
  • the Upper deflecting body 14 removably arranged on the upper edge of the further heating surface 13.
  • the baffles 16 force the flue gases to flow up and down along the circumference of the heating surfaces 11, 13.
  • the boiler according to the present invention can both can be operated as a condensation boiler as well as a conventional low-temperature boiler.
  • the heating surfaces in the flue gas path are so generously dimensioned and out corrosion-resistant material, so that condensation of the flue gas is brought about can, which also uses the heat of condensation of the water contained in the exhaust gases becomes.
  • the energy contained in the fuel is almost to the Calorific value used.
  • the resulting condensate is at the lowest point of the flue gas path 18 derived.
  • the heating return is initiated on one low point of the heating surface. This ensures that the flue gases in the last part of their Flow path are brought to the lowest possible temperature level, so that a high efficiency is achieved.
  • the heating return has a first return connection 20 and a further return connection 21.
  • These return connections 20, 21 are, for example, an underfloor heating circuit and assigned to a radiator heating circuit.
  • the first return is designed as a nozzle 22 in order to which is arranged around an annular space 23 concentrically.
  • the further return 21 opens into this annulus 23. In this way it is possible to use the circulation pumps for both heating circuits to be arranged in the return, with a mutual influence of the two heating circuits is largely avoided.
  • the combined return flows in via a manifold 24 a flow tube 25.
  • the flow tube 25 opens into the first heating surface 11. From the 5 that the opening 26 of the flow tube 25 is bevelled, so that the backflowing heating medium has a tangential speed component granted along arrow 27.
  • a boiler connector 29 envelops the flow tube 25. This configuration ensures that the majority of the recycled heating medium is introduced into the first heating surface 11.
  • a welded one Steel plate 33 in the region of the confluence of the flow tube 25 increases the Thermal resistance and also prevents the occurrence of cold areas on the boiler wall, which could lead to condensation.
  • Concentric a heating surface 11 is arranged for the flame generator 4.
  • the heating surface 11 is on her Top finished with a plate 31.
  • Starting from this plate 31 are reheating surfaces 32 led vertically upwards.
  • Inside the reheating surfaces are made of sheet metal curved flow obstacles used in a conventional manner, the flow paths Extend the flue gases to improve heat transfer.
  • These missions are also referred to as turbolators 33.
  • a domestic water tank 34 arranged. All of these components are arranged in a common trough 35, the intermediate space 36 is filled with heating medium. Isolation 37 prevents excessive heat loss.
  • the evaporator unit 2 of the burner is below the tub 35 is arranged, and, as in the embodiment described above, can be easily expanded downwards.
  • the combustion air is either from the at 38 Environment or supplied from an appropriate pipeline.
  • the flue gas connection is designated with 39.
  • the particular advantages of the invention come Solution especially for carrying.
  • a premix burner is shown partially schematically.
  • a flame holder 4 is placed, which has a plurality of openings 40 in one has a network or grid-like structure.
  • the interior 41 of the evaporator unit 2 stands via openings 42 with the flame holder 4 in connection.
  • An atomizer cup is located on a shaft 43 which projects into the interior 41 through an opening 44 45 attached, which is covered at the top by an atomizer plate 46.
  • Atomizer blades 47 which also rotate with the shaft 43, cause further swirling the fuel which is introduced into the atomizer cup 45 via a line 48, and emerges from this upwards.
  • the combustion air is over a not shown Fan, which can also be driven by the shaft 43, through the opening 44 in the Blown interior 41. In this way it is ensured that a through the openings 42 finely distributed fuel-air mixture is guided.
  • the burner according to the invention enables a very uniform temperature distribution can be achieved so that a high performance can be achieved and at the same time the nitrogen oxide emission can be reduced.

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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)
  • Combustion Of Fluid Fuel (AREA)

Abstract

The burner of the boiler is designed as a pre-mixing burner, whereby fuel is vaporized in the evaporator(2) and mixed with air into a mixture conducive to combustion and which is then introduced into the flame producer(4). The flame producer is installed concentrically inside a cylindrical first ebullator(11). The pre-mixing burner is connected preferably detachably to a part(5) of the boiler accommodating the ebullators(11,13). A deflector(14) is provided preferably above the first ebullator and an additional ebullator(13) is installed preferably radially outside the first ebullator.

Description

Die vorliegende Erfindung betrifft einen Kessel für flüssige Brennstoffe mit einem Brenner, Heizflächen und einem Rauchgasabzug gemäß dem Oberbegriff von Patentanspruch 1.The present invention relates to a boiler for liquid fuels with a burner, Heating surfaces and a flue gas outlet according to the preamble of claim 1.

Es sind Kessel bekannt, bei denen senkrecht angeordnete zylindrische Heizflächen vorgesehen sind. Solche Heizkessel werden mit Verdampferbrennern betrieben, die unterhalb der Heizflächen in einem eigenen Brennraum angeordnet sind. Die Verbrennungsluft wird durch ein dafür vorgesehenes Gebläse eingebracht. Zwischen dem Brennraum und dem durch die Heizflächen eingeschlossenen Raum ist dabei ein ringförmiges Leitglied angeordnet. Bei einem solchen Kessel erfolgt der Wärmeübergang von den Flammen bzw. dem Rauchgas auf die Heizflächen primär durch Gasstrahlung und ist daher von mäßiger Effizienz. Weiters können sich bei solchen Kesseln zumindest in bestimmten Betriebspunkten Bereiche ausbilden, in denen keine Strömung vorliegt, so daß der Wärmeübergang an den Heizflächen weiter verschlechtert wird.Boilers are known in which vertically arranged cylindrical heating surfaces are provided are. Such boilers are operated with evaporator burners, which are below the heating surfaces are arranged in a separate combustion chamber. The combustion air is replaced by one provided blower introduced. Between the combustion chamber and that through the heating surfaces enclosed space, an annular guide member is arranged. With such a The boiler transfers heat from the flames or flue gas to the heating surfaces primarily by gas radiation and is therefore of moderate efficiency. Furthermore, you can with such boilers, at least in certain operating points, form areas in which there is no flow, so that the heat transfer on the heating surfaces deteriorates further becomes.

Andere Heizkessel werden mit Druckzerstäuberbrennern betrieben, welche vorne am Kessel angebracht sind, wobei mit Hilfe der hohen Ölzerstäubungs- und Gebläsedynamik eine zwangsweise horizontale Flammenentwicklung entsteht. Weiters ist es bekannt, Druckzerstäuberbrenner so anzuordnen, daß eine vertikale Flammenausbildung von oben nach unten erreicht wird.Other boilers are operated with pressure atomizing burners, which are on the front of the boiler are attached, with the help of high oil atomization and blower dynamics forced horizontal flame development occurs. It is also known to use pressure atomizing burners to be arranged so that vertical flame formation from top to bottom is achieved.

Ferner sind Kessel bekannt, bei denen Brennstoffe vor der Zündung und vor dem eigentlichen Verbrennungsbeginn innerhalb eines Hohlkörpers, einem sogenannten Flammenerzeuger, in gasförmigem Zustand mit Verbrennungsluft vermischt werden und über Öffnungen in diesem Flammenerzeuger austreten, um gezündet und verbrannt zu werden.Furthermore, boilers are known in which fuels prior to ignition and before the actual one Start of combustion within a hollow body, a so-called flame generator, in gaseous state can be mixed with combustion air and through openings in it Exit the flame generator to be ignited and burned.

Die DE 42 25 749 A betrifft einen Verdampfungsbrenner. Bei diesem Brenner wird Brennstoff in einem porösen Körper verdampft und in ein zylindrisches Mischrohr eingeführt. In diesem Mischrohr erfolgt die Mischung mit der Verbrennungsluft. Konzentrisch außerhalb des Mischrohrs ist ein zylindrischer Körper zur Umlenkung der Flammen angeordnet. Ein Kessel mit Heizflächen od. dgl. ist in diesem Dokument nicht beschrieben.DE 42 25 749 A relates to an evaporation burner. This burner uses fuel evaporated in a porous body and introduced into a cylindrical mixing tube. In This mixing tube is mixed with the combustion air. Concentric outside a cylindrical body for deflecting the flames is arranged in the mixing tube. On Boilers with heating surfaces or the like are not described in this document.

Aufgabe der vorliegenden Erfindung ist es, den oben beschriebenen Kessel so weiterzubilden, daß ein effizienter Wärmeübergang an den Heizflächen und damit ein hoher Wirkungsgrad erreicht wird. Weiters sollen die Abgasemissionen, insbesonders die Stickoxidemissionen, verringert werden. Durch Erreichung einer hohen Leistungsfähigkeit soll ein kleiner Bauraum bei großer Leistung ermöglicht werden. Gleichzeitig sollen Wartungs- und Instandhaltungsarbeiten leicht und unproblematisch möglich sein.The object of the present invention is to develop the boiler described above in such a way that that an efficient heat transfer on the heating surfaces and thus a high efficiency is achieved. Furthermore, the exhaust emissions, especially the nitrogen oxide emissions, be reduced. By achieving a high level of performance, a small installation space is required be made possible with great performance. At the same time, maintenance and repair work should be carried out be easy and unproblematic.

Dies wird durch die im kennzeichnenden Teil des Anspruches 1 angegebenen Maßnahmen gelöst.This is by the measures specified in the characterizing part of claim 1 solved.

Wichtig bei der vorliegenden Erfindung ist, daß Brennstoff und Luft nicht erst in einem zylindrischen Mischrohr sondern schon in der Verdampfereinheit vermischt werden, und bereits in vermischtem Zustand in den Flammenerzeuger eingeführt werden. Dieser ist somit nicht mit dem Mischrohr des vorveröffentlichten Brenners vergleichbar. Bei einem Vormischbrenner im Sinne der Erfindung wird der Brennstoff, der mit der Luft vermischt ist, über Öffnungen in den Brennraum abgegeben. Wesentlich dabei ist, daß im Inneren des Flammenerzeugers Temperaturen unterhalb der Zündtemperatur des brennfähigen Gemisches vorliegen. Außerdem muß die Strömungsgeschwindigkeit des Gemischs beim Durchtritt durch die Öffnungen des Flammenerzeugers größer sein als die Brenngeschwindigkeit, um einen Rückbrand zu vermeiden.It is important in the present invention that fuel and air are not first in a cylindrical Mixing tube but can already be mixed in the evaporator unit, and already in mixed state are introduced into the flame generator. This is therefore not included comparable to the mixing tube of the previously published burner. With a premix burner in the sense of the invention, the fuel, which is mixed with the air, through openings in delivered the combustion chamber. It is essential that inside the flame generator Temperatures are below the ignition temperature of the combustible mixture. Moreover the flow rate of the mixture as it passes through the openings of the flame generator must be greater than the burning rate in order to burn back avoid.

In weiterer Folge ist es für die Erfindung wesentlich, in welcher Relation der Flammenerzeuger zu den Heizflächen angeordnet ist. Eine kompakte Bauweise kann dabei nur durch die erfindungsgemäße Anordnung erreicht werden. Es ist auch eine sehr gleichmäßige Ausströmung des brennfähigen Gemischs aus dem Flammenerzeuger erforderlich, was in der Praxis nur durch einen Vormischbrenner erreichbar ist.It is also important for the invention in which relation the flame generator is arranged to the heating surfaces. A compact design can only be achieved through the arrangement according to the invention can be achieved. It is also a very even flow of the flammable mixture from the flame generator is required, which in practice can only be reached with a premix burner.

Die besonders vorteilhafte Lösung der Erfindung wird hauptsächlich dadurch erreicht, daß sich der wesentliche Teil des Brenners, nämlich der Flammenerzeuger innerhalb des von der Heizfläche umschlossenen Raumes befindet. Dadurch kann der Wärmeübergang nicht nur durch Konvektion und Gasstrahlung sondern auch durch Festkörperstrahlung erfolgen, was zu einer deutlich höheren Effizienz führt.The particularly advantageous solution of the invention is mainly achieved in that the main part of the burner, namely the flame generator within the Heating area enclosed space is located. As a result, the heat transfer can not only by convection and gas radiation but also by solid-state radiation, which leads to leads to significantly higher efficiency.

Besonders günstig ist es, wenn der Vormischbrenner unterhalb des Flammenerzeugers angeordnet ist, und lösbar mit einem die Heizflächen enthaltenden Teil des Kessels verbunden ist. Auf diese Weise ist der erfindungsgemäße Kessel leicht demontierbar, um Inspektions- und Wartungsarbeiten durchführen zu können, so daß der Wartungsaufwand verringert werden kann.It is particularly favorable if the premix burner is arranged below the flame generator is, and is releasably connected to a part of the boiler containing the heating surfaces. In this way, the boiler according to the invention is easily disassembled for inspection and To be able to carry out maintenance work, so that the maintenance effort is reduced can.

Die Leistungsfähigkeit des erfindungsgemäßen Kessels kann dadurch verbessert werden, daß oberhalb des Flammenerzeugers ein Leitkörper vorgesehen ist, der im wesentlichen konzentrisch mit dem Flammenerzeuger ausgebildet ist. Durch die Querschnittsverengung zufolge des Leitkörpers wird eine Beschleunigung der Rauchgasströmung erreicht, so daß ein verbesserter Wärmeübergang an den Heizflächen erreicht werden kann.The performance of the boiler according to the invention can be improved in that A guide body is provided above the flame generator, which is essentially concentric is formed with the flame generator. Due to the narrowing of the cross-section of the guide body an acceleration of the flue gas flow is achieved, so that an improved Heat transfer can be achieved on the heating surfaces.

Eine besondere Verbesserung der Rauchgasführung kann dadurch erreicht werden, daß oberhalb der ersten Heizfläche ein Umlenkkörper vorgesehen ist, und daß radial außerhalb der ersten Heizfläche eine weitere Heizfläche angeordnet ist. Auf diese Weise wird bewirkt, daß die Rauchgase zunächst an der Innenseite der ersten Heizfläche nach oben strömen, über den oberen Rand der ersten Heizfläche umgelenkt werden und weiter an der Außenseite dieser Heizfläche strömen. Durch geeignet ausgebildete Strömungsleitbleche kann die Geschwindigkeit der Strömung so eingestellt werden, daß ein optimaler Wärmeübergang möglich ist.A particular improvement in the flue gas flow can be achieved in that above the first heating surface is provided a deflecting body, and that radially outside the another heating surface is arranged in the first heating surface. In this way it is caused that the flue gases first flow upwards on the inside of the first heating surface, over which the upper edge of the first heating surface and continue on the outside of this Flow heating surface. The speed can be reduced by suitably designed flow baffles the flow can be set so that an optimal heat transfer is possible.

In einer besonders bevorzugten Ausführungsvariante der Erfindung ist vorgesehen, daß ein Heizungsrücklauf im oberen Bereich der ersten Heizfläche vorzugsweise tangential einmündet. Besonders bevorzugt ist es dabei, wenn der Heizungsrücklauf eine Haupteinströmöffnung in die erste Heizfläche und eine Nebeneinströmöffnung in eine weiter Heizfläche aufweist, die außerhalb der ersten Heizfläche angeordnet ist. Bei herkömmlichen Kesselaufbauten wird der Heizungsrücklauf üblicherweise im unteren Bereich des Kessels eingeführt. Bei einem Kessel des erfindungsgemäßen Aufbaus würde dies jedoch in bestimmten Betriebsbedingungen zur Bildung von Kondensaten führen. Bei der Einleitung des Rücklaufs in den oberen Bereich des Kessels kann eine Kondensation in allen Betriebszuständen sicher vermieden werden. Insbesonders günstig ist dabei die Erzeugung einer tangentialen Geschwindigkeitskomponente des rückgeführten Kesselwassers, um eine örtliche Unterkühlung zu vermeiden. Indem die Hauptmenge des Rücklaufs in die innere Heizfläche eingebracht wird, wird die Gefahr einer Unterkühlung dadurch zusätzlich minimiert, daß hier die Heizflächenbeaufschlagung besonders groß ist.In a particularly preferred embodiment of the invention it is provided that a Heating return flows preferably tangentially in the upper area of the first heating surface. It is particularly preferred if the heating return has a main inflow opening in the first heating surface and a side inflow opening in a further heating surface, which is arranged outside the first heating surface. In conventional boiler structures, the Heating return is usually introduced in the lower area of the boiler. With a boiler of the construction according to the invention, however, would do this in certain operating conditions Condensation can form. When initiating the return to the top of the Condensation can be safely avoided in all operating states. In particular The generation of a tangential speed component of the recycled boiler water to avoid local hypothermia. By the Most of the return flow is introduced into the inner heating surface, there is a risk of Hypothermia additionally minimized by the fact that the heating surface is particularly affected is great.

In vielen Fällen werden durch einen Kessel zwei unterschiedliche Heizkreise bedient, beispielsweise ein Heizkreis für eine Fußbodenheizung und ein weiterer Heizkreis für Radiatoren. Solche Heizkreise müssen auf einem deutlich unterschiedlichen Temperaturniveau unabhängig voneinander regelbar sein. Eine gegenseitige Beeinflussung kann dadurch weitgehend ausgeschlossen werden, daß vorzugsweise der Heizungsrücklauf einen ersten Rücklauf und einen weiteren Rücklauf aufweist, der vor dem Eintritt in die Heizfläche in den ersten Rücklauf düsenartig eingeführt ist.In many cases, two different heating circuits are served by one boiler, for example one heating circuit for underfloor heating and another heating circuit for radiators. Such heating circuits must be independent at a significantly different temperature level be controllable from each other. This can largely influence one another be excluded that preferably the heating return a first return and has a further return, which before entering the heating surface in the first return is introduced like a nozzle.

Eine weitere bevorzugte Ausführungsvariante der Erfindung sieht vor, daß die erste Heizfläche als zylindrischer Körper ausgeführt ist, der an seiner Außenseite von Kesselwasser umspült ist, und daß Nachheizflächen rohrförmig oberhalb der ersten Heizfläche angeordnet sind. Ein solcher Aufbau eignet sich besonders für kompakte, wandhängende Zentralheizungskessel mit oder ohne integriertem Brauchwasserbereiter. Bei einer solchen Lösung kann die vertikale Einbaulage in vorteilhafter Weise ausgenützt werden. Da solche Wandkessel primär im Wohnbereich installiert werden, kommen die besonderen Vorteile des vorverdampfenden Vormischbrenners in Bezug auf die geringe Geräuschemission besonders zum Tragen.Another preferred embodiment of the invention provides that the first heating surface is designed as a cylindrical body, which is washed on the outside by boiler water is, and that post-heating surfaces are arranged tubularly above the first heating surface. Such a structure is particularly suitable for compact, wall-hung central heating boilers with or without integrated water heater. With such a solution, the vertical Installation position can be exploited in an advantageous manner. Since such wall kettles primarily in Installed in the living area, come the special advantages of pre-evaporating Premix burner particularly important in terms of low noise emissions.

In der Folge wird die Erfindung anhand des in den Figuren dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
einen schematischen Schnitt durch einen erfindungsgemäßen Kessel,
Fig. 2
eine teilweise axonometrische Darstellung, die die Befestigung des Brenners zeigt, wobei Kessel und Brenner getrennt sind,
Fig. 3
eine Darstellung entsprechend der Fig. 2 in zusammengebautem Zustand,
Fig. 4
einen teilweisen Schnitt im Bereich der Einmündung des Rücklaufs nach Linie IV-IV in Fig. 5,
Fig. 5
einen Schnitt nach Linie V-V in Fig. 4,
Fig. 6
einen Schnitt durch eine weitere Ausführungsvariante der Erfindung und
Fig. 7
schematisch ein Detail eines Vormischbrenners im Schnitt.
The invention is explained in more detail below on the basis of the exemplary embodiment illustrated in the figures. Show it:
Fig. 1
2 shows a schematic section through a boiler according to the invention,
Fig. 2
a partial axonometric view showing the attachment of the burner, the boiler and burner being separated,
Fig. 3
a representation corresponding to FIG. 2 in the assembled state,
Fig. 4
5 shows a partial section in the region of the junction of the return line IV-IV in FIG. 5,
Fig. 5
4 shows a section along line VV in FIG. 4,
Fig. 6
a section through a further embodiment of the invention and
Fig. 7
schematically a detail of a premix burner in section.

Der erfindungsgemäße Kessel besteht aus einem Gestell 1, an dem ein Vormischbrenner angeordnet ist, der aus einer Verdampfereinheit 2 und einem darüber angeordneten zylindrischen Flammenerzeuger 4 besteht. Die Verdampfereinheit 2 wird über eine Luftzufuhrleitung 3 mit Verbrennungsluft und über eine nicht dargestellte Brennstoffleitung mit einem flüssigen Brennstoff versorgt. Im oberen Abschnitt des Gestells 1 ist eine Flanschplatte 6 angeordnet. Eine Dichtung ist mit 9 bezeichnet.The boiler according to the invention consists of a frame 1 on which a premix burner is arranged is that of an evaporator unit 2 and a cylindrical one arranged above it Flame generator 4 exists. The evaporator unit 2 is connected via an air supply line 3 Combustion air and via a fuel line, not shown, with a liquid Fuel supplied. A flange plate 6 is arranged in the upper section of the frame 1. A seal is designated 9.

In den Fig. 2 und 3 ist eine bevorzugte Ausführung der lösbaren Verbindung zwischen dem Gestell 1 und dem oberen Teil 5 des Kessels dargestellt. An der Flanschplatte 6 sind Anpresshaken 7 befestigt, die mit Auflaufstücken 8 in Eingriff bringbar sind, die am Kessel 5 befestigt sind. Dadurch kann die Flanschplatte 6 in der Art eines Bajonettverschlusses am Teil 5 des Kessels befestigt werden. Eine in den Fig. 2 und 3 nicht sichtbare Dichtung ist in einer Nut im unteren Abschnitt des Teils 5 eingelegt. Eine Sicherungsschraube 10 dient dazu, den nötigen Anpressdruck zu erzeugen, und ein unbeabsichtigtes Lösen des Brenners zu verhindern.2 and 3 is a preferred embodiment of the releasable connection between the Frame 1 and the upper part 5 of the boiler shown. There are pressure hooks on the flange plate 6 7 attached, which can be brought into engagement with casseroles 8, which is attached to the boiler 5 are. This allows the flange plate 6 in the manner of a bayonet lock on part 5 of the boiler. A seal that is not visible in FIGS. 2 and 3 is in one Groove inserted in the lower section of part 5. A locking screw 10 serves the generate the necessary contact pressure, and to prevent the burner from being released accidentally.

Im oberen Teil 5 des Kessels ist eine erste Heizfläche 11 vorgesehen, die im wesentlichen zylindrisch ausgebildet ist und konzentrisch zum Flammenerzeuger 4 angeordnet ist. Oberhalb des Flammenerzeugers 4 ist an der ersten Heizfläche 11 ein Leitkörper 12 angeordnet, der ebenfalls zylindrisch ausgebildet ist und konzentrisch zum Flammenerzeuger 4 und zur ersten Heizfläche 11 angeordnet ist. Der Leitkörper 12 ist aus einem hitzebeständigen und isolierenden Material hergestellt. Radial außerhalb und konzentrisch zur ersten Heizfläche 11 ist eine weitere Heizfläche 13 angeordnet, die nach oben hin durch einen Umlenkkörper 14 abgeschlossen ist. In dem Spalt 15 zwischen den Heizflächen 11 und 13 sind Strömungsleitbleche 16 angeordnet. Am äußeren Umfang der weiteren Heizfläche 13 ist ein Rauchgasabzug 17 befestigt.In the upper part 5 of the boiler, a first heating surface 11 is provided, which is essentially is cylindrical and is arranged concentrically to the flame generator 4. Above of the flame generator 4, a guide body 12 is arranged on the first heating surface 11 is also cylindrical and concentric with the flame generator 4 and the first Heating surface 11 is arranged. The guide body 12 is made of a heat-resistant and insulating Material made. Radially outside and concentric to the first heating surface 11 is one arranged further heating surface 13, which is closed at the top by a deflecting body 14 is. Flow baffles are in the gap 15 between the heating surfaces 11 and 13 16 arranged. On the outer circumference of the further heating surface 13 there is a flue gas vent 17 attached.

Durch den oben beschriebenen Aufbau wird folgende Funktion erreicht. Das aus dem Verdampfereinheit 2 ausströmende Brennstoff-Luftgemisch wird in dem Flammenerzeuger 4 vollständig verdampft und nach außen hin abgegeben und verbrannt. Die Rauchgase strömen entlang des Pfeiles 18 zunächst entlang der Innenfläche der ersten Heizfläche 11 nach oben. Durch den Leitkörper 12 wird eine Verengung des Strömungsquerschnittes und eine Beschleunigung der Strömung erreicht. Der Umlenkkörper 14 lenkt die Strömung nach außen hin um, so daß diese in den Spalt 15 zwischen der ersten Heizfläche 11 und der weiteren Heizfläche 13 nach unten strömt. Zur Erleichterung von Service- und Wartungsarbeiten ist der obere Umlenkkörper 14 abnehmbar am oberen Rand der weiteren Heizfläche 13 angeordnet. Die Leitbleche 16 zwingen die Rauchgase zu einer auf- und abgehenden Strömungsbewegung entlang des Umfangs der Heizflächen 11, 13. Letztlich strömen die Rauchgase durch den Rauchgasabzug 17 aus. Der Heizkessel gemäß der vorliegenden Erfindung kann dabei sowohl als Kondensationskessel als auch als herkömmlicher Niedertemperaturkessel betrieben werden. Im ersten Fall sind die Heizflächen im Rauchgasweg so großzügig dimensioniert und aus korrosionsfestem Material, so daß eine Kondensation des Rauchgases herbeigeführt werden kann, wodurch auch die Kondensationswärme des in den Abgasen enthaltenen Wassers ausgenutzt wird. Dadurch wird die in dem Brennstoff enthaltene Energie bis nahezu an den Brennwert genutzt. Das entstehende Kondensat wird am untersten Punkt des Rauchgasweges 18 abgeleitet. In einem solchen Fall erfolgt die Einleitung des Heizungsrücklaufes an einem tiefen Punkt der Heizfläche. Dadurch wird erreicht, daß die Rauchgase im letzten Teil ihres Strömungsweges auf ein möglichst niederes Temperaturniveau gebracht werden, so daß ein hoher Wirkungsgrad erzielt wird.The structure described above achieves the following function. That from the evaporator unit 2 outflowing fuel-air mixture is in the flame generator 4th completely evaporated and released to the outside and burned. The smoke gases flow along the arrow 18 first along the inner surface of the first heating surface 11 upwards. The guide body 12 causes a narrowing of the flow cross section and an acceleration the flow reached. The deflection body 14 directs the flow outwards back so that it fits into the gap 15 between the first heating surface 11 and the further heating surface 13 flows down. To facilitate service and maintenance work is the Upper deflecting body 14 removably arranged on the upper edge of the further heating surface 13. The baffles 16 force the flue gases to flow up and down along the circumference of the heating surfaces 11, 13. Ultimately, the flue gases flow through the Smoke vent 17 off. The boiler according to the present invention can both can be operated as a condensation boiler as well as a conventional low-temperature boiler. In the first case, the heating surfaces in the flue gas path are so generously dimensioned and out corrosion-resistant material, so that condensation of the flue gas is brought about can, which also uses the heat of condensation of the water contained in the exhaust gases becomes. As a result, the energy contained in the fuel is almost to the Calorific value used. The resulting condensate is at the lowest point of the flue gas path 18 derived. In such a case, the heating return is initiated on one low point of the heating surface. This ensures that the flue gases in the last part of their Flow path are brought to the lowest possible temperature level, so that a high efficiency is achieved.

Die Fig. 4 und 5 zeigen den detaillierten Aufbau der Einmündung des Rücklaufs in dem Fall eines Kessels, bei dem eine Kondensation vermieden wird. Ein solcher Kessel ist einfacher und kostengünstiger herzustellen als ein Kondensationskessel..4 and 5 show the detailed structure of the mouth of the return in the case a boiler that prevents condensation. Such a boiler is simpler and cheaper to manufacture than a condensation boiler ..

Der Heizungsrücklauf besitzt einen ersten Rücklaufanschluß 20 und einen weiteren Rücklaufanschluß 21. Diese Rücklaufanschlüsse 20, 21 sind beispielsweise einem Fußbodenheizkreis und einem Radiatorheizkreis zugeordnet. Der erste Rücklauf ist als Düse 22 ausgebildet, um die herum ein Ringraum 23 konzentrisch angeordnet ist. Der weitere Rücklauf 21 mündet in diesen Ringraum 23. Auf diese Weise ist es möglich, die Umwälzpumpen für beide Heizkreise im Rücklauf anzuordnen, wobei eine gegenseitige Beeinflussung der beiden Heizkreise weitestgehend vermieden wird. Über einen Krümmer 24 gelangt der vereinigte Rücklauf in ein Strömungsrohr 25. Das Strömungsrohr 25 öffnet sich in die erste Heizfläche 11. Aus der Fig. 5 ist ersichtlich, daß die Öffnung 26 des Strömungsrohres 25 abgeschrägt ausgebildet ist, so daß dem rückströmenden Heizungsmedium eine tangentiale Geschwindigkeitskomponente entlang des Pfeils 27 erteilt wird. Über eine kleinere Öffnung 28 wird ein kleinerer Teil des Rücklaufsmediums in die weiteren Heizflächen 13 eingeführt. Ein Kesselverbinder 29 umhüllt das Strömungsrohr 25. Durch diese Ausbildung wird sichergestellt, daß die Hauptmenge des rückgeführten Heizungsmediums in die erste Heizfläche 11 eingebracht wird. Eine aufgeschweißte Stahlplatte 33 im Bereich der Einmündung des Strömungsrohrs 25 erhöht den Wärmedurchgangswiderstand und verhindert zusätzlich das Auftreten von kalten Bereichen an der Kesselwandung, die zu einer Kondensation führen könnten.The heating return has a first return connection 20 and a further return connection 21. These return connections 20, 21 are, for example, an underfloor heating circuit and assigned to a radiator heating circuit. The first return is designed as a nozzle 22 in order to which is arranged around an annular space 23 concentrically. The further return 21 opens into this annulus 23. In this way it is possible to use the circulation pumps for both heating circuits to be arranged in the return, with a mutual influence of the two heating circuits is largely avoided. The combined return flows in via a manifold 24 a flow tube 25. The flow tube 25 opens into the first heating surface 11. From the 5 that the opening 26 of the flow tube 25 is bevelled, so that the backflowing heating medium has a tangential speed component granted along arrow 27. A smaller portion of the Return medium introduced into the further heating surfaces 13. A boiler connector 29 envelops the flow tube 25. This configuration ensures that the majority of the recycled heating medium is introduced into the first heating surface 11. A welded one Steel plate 33 in the region of the confluence of the flow tube 25 increases the Thermal resistance and also prevents the occurrence of cold areas on the boiler wall, which could lead to condensation.

In der Fig. 6 ist eine weitere Ausführungsvariante der Erfindung dargestellt. Konzentrisch zum Flammenerzeuger 4 ist eine Heizfläche 11 angeordnet. Die Heizfläche 11 ist an ihrer Oberseite mit einer Platte 31 abgeschlossen. Ausgehend von dieser Platte 31 sind Nachheizflächen 32 senkrecht nach oben geführt. In dem Inneren der Nachheizflächen sind aus Blech gebogene Strömungshindernisse in an sich bekannter Weise eingesetzt, die die Strömungswege der Rauchgase verlängern, um einen verbesserten Wärmeübergang zu bewirken. Diese Einsätze werden auch als Turbolatoren 33 bezeichnet. Neben diesen Bauteilen ist ein Brauchwasserbehälter 34 angeordnet. Alle diese Bauteile sind in einer gemeinsamen Wanne 35 angeordnet, wobei der zwischenliegende Freiraum 36 mit Heizungsmedium gefüllt ist. Eine Isolierung 37 verhindert übermäßige Wärmeverluste. Die Verdampfereinheit 2 des Brenners ist unterhalb der Wanne 35 angeordnet, und kann, wie bei der oben beschriebenen Ausführungsvariante, leicht nach unten hin ausgebaut werden. Die Verbrennungsluft wird bei 38 entweder aus der Umgebung oder aus einer entsprechenden Rohrleitung zugeführt. Der Rauchgasanschluß ist mit 39 bezeichnet. Bei dieser Ausführungsvariante kommen die besonderen Vorteile der erfindungsgemäßen Lösung besonders zum Tragen.6 shows a further embodiment variant of the invention. Concentric a heating surface 11 is arranged for the flame generator 4. The heating surface 11 is on her Top finished with a plate 31. Starting from this plate 31 are reheating surfaces 32 led vertically upwards. Inside the reheating surfaces are made of sheet metal curved flow obstacles used in a conventional manner, the flow paths Extend the flue gases to improve heat transfer. These missions are also referred to as turbolators 33. In addition to these components is a domestic water tank 34 arranged. All of these components are arranged in a common trough 35, the intermediate space 36 is filled with heating medium. Isolation 37 prevents excessive heat loss. The evaporator unit 2 of the burner is below the tub 35 is arranged, and, as in the embodiment described above, can be easily expanded downwards. The combustion air is either from the at 38 Environment or supplied from an appropriate pipeline. The flue gas connection is designated with 39. In this embodiment variant, the particular advantages of the invention come Solution especially for carrying.

In der Fig. 7 ist ein Vormischbrenner teilweise schematisch dargestellt. Auf einer Verdampfereinheit 2 ist ein Flammenhalter 4 aufgesetzt, der eine Vielzahl von Öffnungen 40 in einer netz- oder gitterartigen Struktur aufweist. Der Innenraum 41 der Verdampfereinheit 2 steht über Öffnungen 42 mit dem Flammenhalter 4 in Verbindung.7, a premix burner is shown partially schematically. On an evaporator unit 2, a flame holder 4 is placed, which has a plurality of openings 40 in one has a network or grid-like structure. The interior 41 of the evaporator unit 2 stands via openings 42 with the flame holder 4 in connection.

Auf einer Welle 43, die durch eine Öffnung 44 in den Innenraum 41 ragt, ist ein Zerstäuberbecher 45 befestigt, der nach oben hin durch eine Zerstäuberplatte 46 abgedeckt ist. Zerstäuberschaufeln 47, die sich ebenfalls mit der Welle 43 drehen, sorgen für eine weitere Verwirbelung des Brennstoffs, der über eine Leitung 48 in den Zerstäuberbecher 45 eingebracht wird, und aus diesem nach oben hin austritt. Die Verbrennungsluft wird über ein nicht dargestelltes Gebläse, das ebenfalls durch die Welle 43 angetrieben sein kann, über die Öffnung 44 in den Innenraum 41 eingeblasen. Auf diese Weise ist sichergestellt, daß durch die Öffnungen 42 ein feinst verteiltes Brennstoff-Luftgemisch geführt wird.An atomizer cup is located on a shaft 43 which projects into the interior 41 through an opening 44 45 attached, which is covered at the top by an atomizer plate 46. Atomizer blades 47, which also rotate with the shaft 43, cause further swirling the fuel which is introduced into the atomizer cup 45 via a line 48, and emerges from this upwards. The combustion air is over a not shown Fan, which can also be driven by the shaft 43, through the opening 44 in the Blown interior 41. In this way it is ensured that a through the openings 42 finely distributed fuel-air mixture is guided.

Durch den erfindungsgemäßen Brenner kann eine sehr gleichmäßige Temperaturverteilung erreicht werden, so daß eine hohe Leistung erreicht werden kann und gleichzeitig die Stickoxidemission verringert werden kann.The burner according to the invention enables a very uniform temperature distribution can be achieved so that a high performance can be achieved and at the same time the nitrogen oxide emission can be reduced.

Claims (12)

Kessel für flüssige Brennstoffe, mit einem Brenner, der aus einer Verdampfereinheit (2) und einem zylindrischen Flammenerzeuger (4) aufgebaut ist, mit Heizflächen (11, 13) und mit einem Rauchgasabzug (17), dadurch gekennzeichnet, daß der Brenner als Vormischbrenner ausgeführt ist, bei dem in der Verdampfereinheit (2) der Brennstoff verdampft und mit Luft zu einem zündfähigen Gemisch vermischt wird und das Gemisch in den Flammenerzeuger (4) eingeführt wird, und daß der Flammenerzeuger (4) im wesentlichen konzentrisch innerhalb einer zylindrischen ersten Heizfläche (11) angeordnet ist, wobei der Vormischbrenner vorzugsweise lösbar mit einem die Heizflächen (11, 13) enthaltenden Teil (5) des Kessels verbunden ist, wobei vorzugsweise oberhalb der ersten Heizfläche (11) ein Umlenkkörper (14) vorgesehen ist, und bevorzugt radial außerhalb der ersten Heizfläche (11) eine weitere Heizfläche (13) angeordnet ist.Boiler for liquid fuels, with a burner made up of an evaporator unit (2) and a cylindrical flame generator (4), with heating surfaces (11, 13) and with a flue gas outlet (17), characterized in that the burner is designed as a premix burner is in which in the evaporator unit (2) the fuel is evaporated and mixed with air to form an ignitable mixture and the mixture is introduced into the flame generator (4), and that the flame generator (4) is essentially concentric within a cylindrical first heating surface ( 11) is arranged, the premix burner preferably being detachably connected to a part (5) of the boiler containing the heating surfaces (11, 13), a deflection body (14) preferably being provided above the first heating surface (11), and preferably radially outside a further heating surface (13) is arranged on the first heating surface (11). Kessel nach Anspruch 1, dadurch gekennzeichnet, daß oberhalb des Flammenerzeugers (4) ein Leitkörper (12) vorgesehen ist, der im wesentlichen konzentrisch mit dem Flammenerzeuger (4) ausgebildet ist.Boiler according to Claim 1, characterized in that a guide body (12) is provided above the flame generator (4) and is designed essentially concentrically with the flame generator (4). Kessel nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Umlenkkörper (14) abnehmbar ausgebildet ist.Boiler according to claim 1 or 2, characterized in that the deflecting body (14) is designed to be removable. Kessel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen der ersten Heizfläche (11) und der weiteren Heizfläche (13) Strömungsleitbleche (16) angeordnet sind.Boiler according to one of claims 1 to 3, characterized in that flow baffles (16) are arranged between the first heating surface (11) and the further heating surface (13). Kessel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Rauchgasabzug (17) am äußeren Umfang des Kessels angeordnet ist.Boiler according to one of claims 1 to 4, characterized in that the flue gas outlet (17) is arranged on the outer circumference of the boiler. Kessel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß sich der untere Rand des Flammenerzeugers (4) auf der Höhe des unteren Randes der ersten Heizfläche (11) befindet.Boiler according to one of claims 1 to 5, characterized in that the lower edge of the flame generator (4) is at the level of the lower edge of the first heating surface (11). Kessel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Achse des Flammenerzeugers (4) und erster Heizung (11) vertikal angeordnet ist.Boiler according to one of claims 1 to 6, characterized in that the axis of the flame generator (4) and first heater (11) is arranged vertically. Kessel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein Heizungsrücklauf im oberen Bereich der ersten Heizfläche (11) vorzugsweise tangential einmündet.Boiler according to one of claims 1 to 7, characterized in that a heating return in the upper area of the first heating surface (11) opens preferably tangentially. Kessel nach Anspruch 8, dadurch gekennzeichnet, daß der Heizungsrücklauf eine Haupteinströmöffnung in die erste Heizfläche (11) und eine Nebeneinströmöffnung in eine weitere Heizfläche (13) aufweist, die außerhalb der ersten Heizfläche (11) angeordnet ist.Boiler according to claim 8, characterized in that the heating return has a main inflow opening in the first heating surface (11) and a secondary inflow opening in a further heating surface (13) which is arranged outside the first heating surface (11). Kessel nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Heizungsrücklauf einen ersten Rücklauf (20) und einen weiteren Rücklauf (21) aufweist, der vor dem Eintritt in die Heizfläche (11) in den ersten Rücklauf (20) düsenartig eingeführt ist.Boiler according to one of claims 1 to 9, characterized in that the heating return has a first return (20) and a further return (21) which is introduced into the first return (20) like a nozzle before entering the heating surface (11) . Kessel nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die erste Heizfläche (11) als zylindrischer Körper ausgeführt ist, der an seiner Außenseite von Kesselwasser umspült ist, und daß Nachheizflächen (32) rohrförmig oberhalb der ersten Heizfläche (11) angeordnet sind.Boiler according to one of claims 1 to 10, characterized in that the first heating surface (11) is designed as a cylindrical body which is flushed with boiler water on its outside, and in that post-heating surfaces (32) are arranged in a tube above the first heating surface (11) . Kessel nach Anspruch 11, dadurch gekennzeichnet, daß die erste Heizfläche (11) gemeinsam mit einem Brauchwasserbehälter (34) in einer von Kesselwasser gefluteten Wanne (35) angeordnet ist.Boiler according to claim 11, characterized in that the first heating surface (11) is arranged together with a process water tank (34) in a tub (35) flooded with boiler water.
EP19990890351 1998-11-12 1999-11-03 Boiler for liquid fuels Expired - Lifetime EP1002993B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT99890351T ATE232948T1 (en) 1998-11-12 1999-11-03 LIQUID FUEL BOILER
SI9930265T SI1002993T1 (en) 1998-11-12 1999-11-03 Boiler for liquid fuels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT189298 1998-11-12
AT189298A AT410588B (en) 1998-11-12 1998-11-12 LIQUID FUEL BOILERS

Publications (3)

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EP1002993A2 true EP1002993A2 (en) 2000-05-24
EP1002993A3 EP1002993A3 (en) 2000-10-04
EP1002993B1 EP1002993B1 (en) 2003-02-19

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ID=3523276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990890351 Expired - Lifetime EP1002993B1 (en) 1998-11-12 1999-11-03 Boiler for liquid fuels

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EP (1) EP1002993B1 (en)
AT (1) AT410588B (en)
DE (1) DE59904319D1 (en)
DK (1) DK1002993T3 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225749A1 (en) 1991-08-06 1993-02-11 Mikuni Kogyo Kk EVAPORATION BURNER

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287857A (en) * 1979-09-11 1981-09-08 Leo Schnitzer Burner-boiler combination and an improved burner construction therefor
JPS6199010A (en) * 1984-10-19 1986-05-17 Matsushita Electric Ind Co Ltd Liquid fuel combustion device
DE3608698A1 (en) * 1986-01-18 1987-07-23 Deutsche Forsch Luft Raumfahrt BURNER BOILER UNIT
CH677139A5 (en) * 1988-06-24 1991-04-15 Ygnis Sa
US5531212A (en) * 1994-04-14 1996-07-02 Clean Burn, Inc. Multi oil furnace
DE19519963C2 (en) * 1995-05-31 1997-07-17 Pyropac Ag boiler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225749A1 (en) 1991-08-06 1993-02-11 Mikuni Kogyo Kk EVAPORATION BURNER

Also Published As

Publication number Publication date
DE59904319D1 (en) 2003-03-27
AT410588B (en) 2003-06-25
DK1002993T3 (en) 2003-06-16
ATA189298A (en) 2002-10-15
EP1002993B1 (en) 2003-02-19
EP1002993A3 (en) 2000-10-04

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