EP0315579A1 - Heater for circulating water - Google Patents

Heater for circulating water Download PDF

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Publication number
EP0315579A1
EP0315579A1 EP88730237A EP88730237A EP0315579A1 EP 0315579 A1 EP0315579 A1 EP 0315579A1 EP 88730237 A EP88730237 A EP 88730237A EP 88730237 A EP88730237 A EP 88730237A EP 0315579 A1 EP0315579 A1 EP 0315579A1
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EP
European Patent Office
Prior art keywords
burner
water heater
circulating water
heater according
cooling
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
EP88730237A
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German (de)
French (fr)
Other versions
EP0315579B1 (en
Inventor
Hans-Albrecht Kohlmann
Thomas Pieper
Roland Rathert
Jürgen Schilling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
N.V. VAILLANT S.A.
VAILLANT-SCHONEWELLE B.V.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
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Filing date
Publication date
Priority claimed from AT290087A external-priority patent/AT391937B/en
Priority claimed from AT289087A external-priority patent/AT393020B/en
Priority claimed from AT0006688A external-priority patent/ATA6688A/en
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0315579A1 publication Critical patent/EP0315579A1/en
Application granted granted Critical
Publication of EP0315579B1 publication Critical patent/EP0315579B1/en
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    • 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
    • F23M9/10—Baffles or deflectors formed as tubes, e.g. in water-tube boilers
    • 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
    • F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel

Definitions

  • the invention relates to a circulating water heater with a burner and a heat exchanger heated by this burner and connected to a flow and a return of the heating water.
  • the object of the invention is to cool the burner of such a water heater.
  • Such cooling in particular of the area of the fuel outlet openings and of the flame area, proves to be necessary in order to prevent the formation of pollutants, such as NO x , which can form in this area due to excessively high temperatures.
  • the invention is based on the knowledge that water from the return of the circulating water heater can be used for such cooling.
  • At least part of the return water is used to cool the burner.
  • the heating water can be returned via the burner.
  • a throttle for regulating the portion fed to the burner for cooling it can then be arranged upstream of the burner.
  • a safety device can also advantageously be provided which, if necessary, e.g. If a temperature limit is exceeded or a flow limit is undershot, the burner and the fuel supply are switched off to prevent damage due to overheating.
  • a valve forming the entrance of the branch line and controlling its throughput is expediently arranged downstream of a circulation pump of the heating water circulation line.
  • this branch line opens before the heat exchanger in its return line, so that the heat contained therein is fully utilized for heating the flow line.
  • Such a cooling tube can then be arranged in an upward direction with respect to the horizontal at an angle in the flow direction.
  • this cooling tube can be arranged at an acute angle to the horizontal in an inclined position in the longitudinal direction of the axis of the burner chamber, the burner chamber itself can be arranged horizontally or also obliquely, provided that efforts are made to keep the distance of the cooling tube from the fuel outlet openings constant hold.
  • the axes of the cooling tubes and the burner chambers should then run in planes that enclose the same angle with the horizontal.
  • a group of several parallel cooling tubes can also run in a plane inclined obliquely to the horizontal at an acute angle transversely to the longitudinal direction of at least one burner chamber, which has the advantage that these tubes are arranged between groups of groups arranged at a distance from one another arranged fuel outlet openings of the burner chamber can be arranged where they can be brought closer to the area to be cooled, namely the core of the burner flames.
  • Such cooling tubes then advantageously run over a plurality of burner chambers arranged in parallel next to one another.
  • Various variants are also conceivable with regard to the arrangement of cooling tubes which run transversely to the axis of the burner chamber:
  • these cooling tubes can run from a long side of the burner chamber or a set of burner chambers with a uniform slope to the opposite long side be arranged, whereby a distributor for a coulter of parallel cooling pipes must lie lower than a collector arranged on the opposite long side.
  • the cooling tubes can also run obliquely upwards from both longitudinal sides of a burner chamber or a set of burner chambers, the collector then being located in the center of the width of the burner higher than the two flanking distributors.
  • the course of the cooling pipes comprises at least one slope heated by the burner, which accelerates the cooling water circulation due to the thermosiphon effect.
  • cooling pipe forms an incline above at least one of the end sections of the burner chamber, in which the cooling water flowing through is naturally heated more intensively and its flow is thereby accelerated.
  • Such a slope can advantageously extend as a loop around the axis of the combustion chamber.
  • a loop can also be made in a plane that is approximately perpendicular to the axis of the burner chamber.
  • this slope can also be designed as at least one loop in an approximately perpendicular plane perpendicular to the axis of the burner, as a result of which it can then be conveniently accommodated in the region of the rear wall of the water heater.
  • the cooling tube which is to be heated to a greater extent in an end section of the flame region, to be laid helically within the combustion chamber about its axis, the pressure loss of a possibly parallel line routing being equal or smaller.
  • the cooling tube can transition into an incline located above the end section of the burner. With such a bend, the cooling tube can be accommodated particularly cheaply in a housing of the water heater and included in its line system.
  • Such an inclusion can be carried out in a particularly space-saving manner if the upwardly angled cooling tube strand runs approximately perpendicularly above the end section of the burner chambers in this incline within the combustion chamber.
  • the burner to be cooled consists of several burner chambers arranged side by side and parallel to each other, e.g. Burner tubes, then the cooling tubes emanating from a common distributor can advantageously run approximately horizontally over the flame areas of these burner chambers and then lead upwards at an angle with their gradients to a collector arranged above these bends.
  • cooling tube strands arranged according to the invention can be included particularly advantageously in that the cooling tube strands extending over the flame area of the burner are designed as sections of a branch line branching off from the return of the heating water circulation in front of the heat exchanger and opening into its flow.
  • the circulation heater shown in the diagram in FIG. 1 comprises a burner 1 and a heat exchanger 2 heated by this burner and arranged in its exhaust gas duct, to which the flow 3 and the return 4 of a circulation heater connect.
  • the return line 4 there is the circulation pump 5 and a valve 6, which forms the outlet of a branch line 7, which is passed over or through the burner 1 and whose water throughput is used to cool this burner 1.
  • the flow controller e.g. an adjustable throttle 8 is upstream of the burner 1 in this branch line 7 and regulates the throughput of the cooling water.
  • a safety device 9 is used to switch off the burner 1, e.g. if a certain temperature limit value measured on the burner 1 is exceeded or if the water flow falls below a certain minimum. In the exemplary embodiment shown, this safety device 9 is located in the flow direction in front of the burner 1, but it could also be arranged behind it in order to monitor the temperature of the cooling water leaving the burner 1.
  • the valve 6 controlling the throughput via the branch line 7 can either release this throughput only in phases, ie only when necessary, for cooling the burner 1 or also — to a limited extent — continuously.
  • the regulation of the cooling water throughput can be carried out as a function of the temperature or the output of the burner 1 or also as a function of the water or fuel throughput by means of the throttle 8.
  • a single burner chamber 10 of a burner is embodied by a burner rod with a horizontally extending longitudinal axis 11.
  • This burner chamber 10 is fed via a mixing tube 12 and a gas nozzle 13 arranged at a distance from the inlet of this mixing tube 12, a fuel-air mixture which emerges from fuel outlet openings 14 of the top wall of the burner chamber 10 and forms the burner flames there when the burner is ignited.
  • a cooling pipe 15 which runs in the longitudinal direction of the burner chamber 10 and carries cooling water, is arranged with its longitudinal axis 16 in a plane S which runs obliquely to the horizontal W.
  • such cooling tubes 15 run obliquely upwards from the two longitudinal sides of a burner 1 comprising two burner chambers 10 towards the width center thereof, namely they open into a higher-level collector 17 running parallel to the burner chambers 1.
  • a family of such cooling pipes 15 runs from a distributor 18 arranged on one long side of the burner 1 comprising two burner chambers 10 to a collector 17 arranged on the opposite long side.
  • the longitudinal axes 11 of the burner chambers 10 are located in a horizontal plane W.
  • FIG. 5 shows that the cooling tubes 15 are expediently located between the groups 19 of the distillation which are arranged at a distance from one another Substance outlet openings 14 should run so as not on the one hand to hinder the formation of the burner flames, but on the other hand to be as close as possible to the hot core area of these flames.
  • FIG. 6 teaches that the longitudinal axes 11 of the burner chambers 10 can likewise be arranged in an inclined plane S, specifically in a plane S which preferably runs at the same acute angle ⁇ to the horizontal W as the cooling pipes 15.
  • FIG. 7 shows a burner chamber 10, which, in contrast to the embodiment according to FIG. 1, is also arranged with a longitudinal axis 11 that runs obliquely at an acute angle ⁇ , so that the cooling pipe 15, which runs at the same inclination, extends over the entire length of the burner chamber 10 in the for the cooling effect, the optimal uniform target distance from the fuel outlet openings 14 of this burner chamber 10 can run.
  • the cooling chamber 15 which is fed from a gas nozzle 13 via an injector 20 with a subsequent mixing chamber with a fuel-air mixture, is assigned a cooling pipe 15 which runs through the flame region 22 of the burner 1 with a pipe string 21.
  • the cooling pipe 15 forms some slopes 24 in the form of loops 25 on the way to the heat exchanger 2, in which the cooling water is additionally heated by increased heat absorption. This significantly accelerates the upward flow of the cooling water due to the thermosiphon effect and supports it without the aid of a pump.
  • the loops 25 forming the slopes 24 can run in a vertical plane approximately parallel to the burner chamber 10 above the end section 23 of the burner chamber 10; however, such loops could also be formed by a tubing string coiled within the combustion chamber 26 about its axis.
  • the slopes 24 designed as loops 25 run in the case of a tubular burner chamber 10 in a plane perpendicular to its longitudinal axis 11, e.g. on the back wall of a water heater.
  • a desirably increased heating of the cooling water in the end section 23 of the flame region 22 of a burner chamber 10 can also be achieved according to FIG. 10 by means of an angled portion 27 of the cooling tube 15 formed above the end section 23 within a combustion chamber 26, which changes into a vertical slope 24.
  • This embodiment shown is particularly suitable for the burner of a water heater, in whose heating water circulation - according to FIG. 11 - a circulation pump 5 is to be included.
  • the flow 3 starts from its heat exchanger 2 and the return 4 opens into the heat exchanger 2, from which a branch line 7 comprises the cooling pipe line 21 guided through the flame region 22, which in turn leads upwards via the bend 27 in the vertical slope 24 flows into the lead 3.
  • the circulation pump 5 also ensures the throughflow in the branch line 7; the circulation pump 5 could of course also be arranged elsewhere, for example in the return 4.
  • these burner chambers 10 should be removable.

Abstract

In a heater for circulating water, with a burner (1) and a heat exchanger (2), which is heated by this burner (1) and connected to a forward run (3) and a return run (4) of the heating water, at least part of the return water serves for cooling the burner (1). Either the return run (4) of the heating water can be guided via this burner (1) for cooling or there can be connected to the return run (4) a branch line (7), via which a controllable portion, which serves for cooling the burner (1), of the return run water can be removed from the return run (4). <IMAGE>

Description

Die Erfindung betrifft einen Umlaufwasserheizer mit einem Brenner sowie einem von diesem Brenner beheizten und an einen Vorlauf und einen Rücklauf des Heizwassers angeschlossenen Wärmetauscher.The invention relates to a circulating water heater with a burner and a heat exchanger heated by this burner and connected to a flow and a return of the heating water.

Aufgabe der Erfindung ist es, den Brenner eines solchen Wasser­heizers zu kühlen. Eine solche Kühlung insbesondere des Bereiches der Brennstoffaustrittsöffnungen und des Flammen­bereiches erweist sich als erforderlich, um der Entstehung von Schadstoffen, wie NOx vorzubeugen, die sich durch allzu hohe Temperaturen in diesem Bereich ausbilden können.The object of the invention is to cool the burner of such a water heater. Such cooling, in particular of the area of the fuel outlet openings and of the flame area, proves to be necessary in order to prevent the formation of pollutants, such as NO x , which can form in this area due to excessively high temperatures.

Weiters ist es eine Aufgabe der Erfindung, die Kühlwirkung mit einfachen Mitteln und geringem Kostenaufwand, insbesondere ohne Verwendung einer eigenen Kühlmittelumlaufpumpe zu erzielen und dennoch einen raschen Kühlmittelumlauf zu gewährleisten.Furthermore, it is an object of the invention to achieve the cooling effect with simple means and at low cost, in particular without using a separate coolant circulation pump, and still to ensure rapid coolant circulation.

Die Erfindung beruht auf der Erkenntnis, daß für eine solche Kühlung Wasser aus dem Rücklauf des Umlaufwasserheizers heran­gezogen werden kann.The invention is based on the knowledge that water from the return of the circulating water heater can be used for such cooling.

Erfindungsgemäß dient zumindest ein Teil des Rücklaufwassers zur Kühlung des Brenners.According to the invention, at least part of the return water is used to cool the burner.

Gemäß einer besonders einfachen Ausführungsform kann der Rücklauf des Heizwassers über den Brenner geführt sein.According to a particularly simple embodiment, the heating water can be returned via the burner.

Um jedoch das Ausmaß der Kühlung besser regeln zu können, ist es vorteilhafter, an den Rücklauf eine Zweigleitung anzuschließen, über die dem Rücklauf bloß ein der Kühlung des Brenners dienender Anteil des Rücklaufwassers entnehmbar ist.However, in order to be able to better regulate the extent of the cooling, it is more advantageous to connect a branch line to the return, via which the return is merely a portion of the return water serving to cool the burner.

In einer solchen Zweigleitung kann dann dem Brenner eine Drossel zur Regelung des dem Brenner zu dessen Kühlung zugeführten An­teiles vorgeordnet werden.In such a branch line, a throttle for regulating the portion fed to the burner for cooling it can then be arranged upstream of the burner.

In einer solchen Zweigleitung kann überdies vorteilhafterweise eine Sicherheitseinrichtung vorgesehen werden, die im Bedarfs­fall, z.B. bei Überschreiten eines Temperaturgrenzwertes oder Unterschreiten eines Strömungsgrenzwertes den Brenner und die Brennstoffzufuhr abschaltet, um Überhitzungsschäden vorzubeugen.In such a branch line, a safety device can also advantageously be provided which, if necessary, e.g. If a temperature limit is exceeded or a flow limit is undershot, the burner and the fuel supply are switched off to prevent damage due to overheating.

Zweckmäßigerweise ist ein den Eingang der Zweigleitung bilden­des, deren Durchsatz steuerndes Ventil einer dem Umlauf dienen­den Pumpe der Heizwasserumlaufleitung nachgeordnet.A valve forming the entrance of the branch line and controlling its throughput is expediently arranged downstream of a circulation pump of the heating water circulation line.

Zur Rückführung des in der Zweigleitung strömenden Kühlwasser­anteiles mündet diese Zweigleitung vor dem Wärmetauscher in dessen Rücklauf, so daß die darin enthaltene Wärme voll zur Aufheizung des Vorlaufes verwertet wird.To return the cooling water component flowing in the branch line, this branch line opens before the heat exchanger in its return line, so that the heat contained therein is fully utilized for heating the flow line.

Zur Beschleunigung des Kühlwasserumlaufes ist es von Vorteil, wenn bei Verwendung eines Brenners, insbesondere Gasbrenners, dessen Brennerkammer an ihrer Oberseite von Brennstoffaustritts­öffnungen durchsetzt ist, diesen Brennstoffaustrittsöffnungen zumindest ein der Heizwasserumlaufleitung angeschlossenes oder zugehöriges Kühlrohr zugeordnet wird.To accelerate the cooling water circulation, it is advantageous if, when using a burner, in particular a gas burner, the burner chamber of which is penetrated by fuel outlet openings on its upper side, at least one cooling pipe connected or associated with the heating water circulation line is assigned to these fuel outlet openings.

Ein solches Kühlrohr kann dann in bezug zur Waagrechten unter einem Winkel in Strömungsrichtung aufwärtsverlaufend angeordnet sein.Such a cooling tube can then be arranged in an upward direction with respect to the horizontal at an angle in the flow direction.

Ein solcher Verlauf des Kühlrohres ergibt zwangsläufig bedingt ohne weiteres Zutun, allein durch die Erwärmung des Kühlwassers im Flammenbereich des Brenners und die daraus resultierenden Dichte-Unterschiede ein Aufwärtsströmen des sich erwärmenden und sich dadurch ausdehnenden und spezifisch leichter werdenden Kühlwassers und damit den erwünschten Umlauf im Kühlsystem. Die Schrägneigung der Kühlrohre soll mindestens 12° betragen, um den angestrebten Effekt sicherzustellen.Such a course of the cooling pipe inevitably results in no further action, simply due to the heating of the cooling water in the flame area of the burner and the resulting density differences, an upward flow of the heating and thus expanding and specifically lighter cooling water and thus the desired circulation in the cooling system . The inclination of the cooling pipes should be at least 12 ° to ensure the desired effect.

Die praktische Verwirklichung des Erfindungsgedankens ist in mannigfachen konstruktiven Varianten denkbar.The practical implementation of the inventive concept is conceivable in a variety of constructive variants.

So kann dieses Kühlrohr unter einem spitzen Winkel zur Waagrech­ten in einer Schräglage in Längsrichtung der Achse der Brenner­kammer verlaufend angeordnet sein , wobei die Brennerkammer selbst waagrecht oder gleichfalls schräg verlaufend angeordnet sein kann, sofern man bestrebt ist, den Abstand des Kühlrohres von den Brennstoffaustrittsöffnungen konstant zu halten. Im letztgenannten Fall sollten dann die Achsen der Kühlrohre und der Brennerkammern in Ebenen verlaufen, die denselben Winkel mit der Waagrechten einschließen.So this cooling tube can be arranged at an acute angle to the horizontal in an inclined position in the longitudinal direction of the axis of the burner chamber, the burner chamber itself can be arranged horizontally or also obliquely, provided that efforts are made to keep the distance of the cooling tube from the fuel outlet openings constant hold. In the latter case, the axes of the cooling tubes and the burner chambers should then run in planes that enclose the same angle with the horizontal.

Man kann im Rahmen der Erfindung aber auch eine Schar mehrerer zueinander paralleler Kühlrohre in einer schräg zur Waagrech­ten unter einem spitzen Winkel geneigten Ebene quer zur Längs­richtung zumindest einer Brennerkammer verlaufen lassen, was den Vorteil bringt, daß diese Rohre zwischen mit Abstand voneinander angeordneten Gruppen von gruppenweise angeordneten Brennstoffaustrittsöffnungen der Brennerkammer angeordnet werden können, wo man sie dem zu kühlenden Bereich, nämlich dem Kern der Brennerflammen näherbringen kann.In the context of the invention, however, a group of several parallel cooling tubes can also run in a plane inclined obliquely to the horizontal at an acute angle transversely to the longitudinal direction of at least one burner chamber, which has the advantage that these tubes are arranged between groups of groups arranged at a distance from one another arranged fuel outlet openings of the burner chamber can be arranged where they can be brought closer to the area to be cooled, namely the core of the burner flames.

Solche Kühlrohre verlaufen dann vorteilhafterweise über mehrere parallel nebeneinander angeordnete Brennerkammern. Auch hinsichtlich der Anordnung von Kühlrohren, die quer zur Achse der Brennerkammer verlaufen, sind verschiedenerlei Vari­anten denkbar:Such cooling tubes then advantageously run over a plurality of burner chambers arranged in parallel next to one another. Various variants are also conceivable with regard to the arrangement of cooling tubes which run transversely to the axis of the burner chamber:

So können diese Kühlrohre etwa von einer Längsseite der Brenner­kammer bzw. einer Schar von Brennerkammern mit einer einheitli­chen Schräge zur gegenüberliegenden Längsseite verlaufend an­ geordnet sein, wobei ein Verteiler für eine Schar parallel ver­laufender Kühlrohre tiefer liegen muß als ein an der gegenüber­liegenden Längsseite angeordneter Sammler.For example, these cooling tubes can run from a long side of the burner chamber or a set of burner chambers with a uniform slope to the opposite long side be arranged, whereby a distributor for a coulter of parallel cooling pipes must lie lower than a collector arranged on the opposite long side.

In einer symmetrischen Querschnittsausbildung können die Kühl­rohre aber auch von beiden Längsseiten einer Brennerkammer bzw. einer Schar von Brennerkammern zur Mitte hin schräg aufwärts verlaufen, wobei dann der Sammler in der Breitenmitte des Brenners höher liegt als die beiden flankierenden Verteiler.In a symmetrical cross-sectional configuration, however, the cooling tubes can also run obliquely upwards from both longitudinal sides of a burner chamber or a set of burner chambers, the collector then being located in the center of the width of the burner higher than the two flanking distributors.

Auch bei querverlaufend angeordneten Kühlrohren stehen die beiden Möglichkeiten offen,die Brennerkammern in einer waag­rechten Ebene anzuordnen oder in einer der Schräglage der Kühlrohre angepaßten schräg verlaufenden Ebene.Even with cooling tubes arranged transversely, the two possibilities are open to arrange the burner chambers in a horizontal plane or in an inclined plane which is adapted to the inclined position of the cooling tubes.

Wesentlich ist in allen Fällen, daß der Verlauf der Kühlrohre zumindest eine vom Brenner beheizte Steigung umfaßt, die auf Grund der Thermosiphonwirkung den Kühlwasserumlauf beschleunigt.It is essential in all cases that the course of the cooling pipes comprises at least one slope heated by the burner, which accelerates the cooling water circulation due to the thermosiphon effect.

Diese Wirkung läßt sich mit gutem Erfolg auch dadurch erzielen, daß das Kühlrohr oberhalb zumindest eines der Endabschnitte der Brennerkammer eine Steigung bildet, in der das durchströmende Kühlwasser naturgemäß intensiver erwärmt und dadurch in seiner Strömung beschleunigt wird.This effect can also be achieved with good success in that the cooling pipe forms an incline above at least one of the end sections of the burner chamber, in which the cooling water flowing through is naturally heated more intensively and its flow is thereby accelerated.

Eine solche Steigung kann sich vorteilhafterweise als eine Schleife rings um die Achse der Brennkammer erstrecken. Man kann eine solche Schleife aber auch in einer zur Achse der Brennerkammer parallelen, etwa lotrechten Ebene führen. Schließlich kann diese Steigung als zumindest eine Schleife auch in einer zur Achse des Brenners senkrechten, etwa lot­rechten Ebene ausgebildet sein, wodurch sie sich dann günstig etwa im Bereich der Rückwand des Wasserheizers unterbringen läßt.Such a slope can advantageously extend as a loop around the axis of the combustion chamber. However, such a loop can also be made in a plane that is approximately perpendicular to the axis of the burner chamber. Finally, this slope can also be designed as at least one loop in an approximately perpendicular plane perpendicular to the axis of the burner, as a result of which it can then be conveniently accommodated in the region of the rear wall of the water heater.

Bei Wandgeräten ist es denkbar, das Kühlrohr, das in einem Endabschnitt des Flammenbereiches stärker erwärmt werden soll, wendelnd innerhalb der Brennkammer um deren Achse zu verlegen, wobei der Druckverlust einer eventuell parallelen Leitungs­führung gleich oder kleiner sein darf.In the case of wall-mounted units, it is conceivable for the cooling tube, which is to be heated to a greater extent in an end section of the flame region, to be laid helically within the combustion chamber about its axis, the pressure loss of a possibly parallel line routing being equal or smaller.

Gemäß einer anderen Ausführungsform der Kühlung kann Kühl­rohr mit einer Abwinkelung in eine oberhalb des Endabschnittes des Brenners gelegene Steigung übergehen. Mit einer solchen Ab­winkelung läßt sich das Kühlrohr besonders günstig in einem Gehäuse des Wasserheizers unterbringen und in dessen Leitungs­system einbezeihen.According to another embodiment of the cooling, the cooling tube can transition into an incline located above the end section of the burner. With such a bend, the cooling tube can be accommodated particularly cheaply in a housing of the water heater and included in its line system.

Besonders raumsparend ist eine solche Einbeziehung durchführbar, wenn der aufwärts abgewinkelte Kühlrohrstrang in dieser Stei­gung innerhalb der Brennkammer etwa lotrecht oberhalb des Endabschnittes der Brennerkammern verläuft.Such an inclusion can be carried out in a particularly space-saving manner if the upwardly angled cooling tube strand runs approximately perpendicularly above the end section of the burner chambers in this incline within the combustion chamber.

Besteht der zu kühlende Brenner aus mehreren nebeneinander und parallel zueinander angeordneten Brennerkammern, z.B. Brenner­rohren, dann können vorteilhafterweise die von einem gemein­samen Verteiler ausgehenden Kühlrohre etwa waagrecht über die Flammenbereiche dieser Brennerkammern verlaufen und sodann aufwärts abgewinkelt mit ihren Steigungen in einen oberhalb dieser Abwinkelungen angeordneten Sammler münden.If the burner to be cooled consists of several burner chambers arranged side by side and parallel to each other, e.g. Burner tubes, then the cooling tubes emanating from a common distributor can advantageously run approximately horizontally over the flame areas of these burner chambers and then lead upwards at an angle with their gradients to a collector arranged above these bends.

In den Heizwasserumlauf eines Umlaufwasserheizers lassen sich erfindungsgemäß angeordnete Kühlrohrstränge besonders günstig dadurch einbeziehen, daß die sich über den Flammenbereich des Brenners erstreckenden Kühlrohrstränge als Abschnitte einer vom Rücklauf des Heizwasserumlaufes vor dem Wärmetauscher ab­zweigenden und in dessen Vorlauf einmündenden Zweigleitung aus­gebildet sind.In the heating water circulation of a circulation water heater, cooling tube strands arranged according to the invention can be included particularly advantageously in that the cooling tube strands extending over the flame area of the burner are designed as sections of a branch line branching off from the return of the heating water circulation in front of the heat exchanger and opening into its flow.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen veranschaulicht und anschließend an Hand dieser Zeichnungen erläutert. Im einzelnen zeigen

  • Figur 1 das Schaltbild eines Umlaufwasserheizers mit einer über eine Zweigleitung gespeisten Kühlung des Brenners,
  • Figur 2 einen schematischen Längsschnitt durch eine Brennerkammer und ein ihr zugeordnetes Kühlrohr,
  • Figur 3 einen Querschnitt durch einen Brenner mit zwei Brennerkammern und ihnen zugeordneten Kühlrohren,
  • Figur 4 ist gleichfalls ein Querschnitt durch einen gekühlten Brenner anderer Ausführungsform und
  • Figur 5 zeigt dessen Draufsicht nach Pfeil V der Fig.4.
  • Figur 6 stellt einen schematischen Querschnitt durch eine weitere Ausführungsform dar.
  • Figur 7 betrifft einen schematischen Längsschnitt durch eine abgewandelte Ausführungsform.
  • Figur 8 betrifft das Schema eines gekühlten Brenners in einem Vertikalschnitt,
  • Figur 9 stellt einen schematischen Schnitt durch einen Brenner mit drei Brennerrohren dar,
  • Figur 10 das Schema einer abgewandelten Kühlung eines Brenners,
  • Figur 11 zeigt das Schaltschema eines Umlaufwasserheizers,
  • Figur 12 eine weitere Ausführungsform der Kühlung des Brenners.
Exemplary embodiments of the subject matter of the invention are illustrated in the drawings and subsequently explained on the basis of these drawings. Show in detail
  • FIG. 1 shows the circuit diagram of a circulation water heater with cooling of the burner fed via a branch line,
  • FIG. 2 shows a schematic longitudinal section through a burner chamber and a cooling tube assigned to it,
  • FIG. 3 shows a cross section through a burner with two burner chambers and cooling tubes assigned to them,
  • Figure 4 is also a cross section through a cooled burner of another embodiment and
  • Figure 5 shows its top view according to arrow V of Figure 4.
  • FIG. 6 shows a schematic cross section through a further embodiment.
  • Figure 7 relates to a schematic longitudinal section through a modified embodiment.
  • FIG. 8 relates to the schematic of a cooled burner in a vertical section,
  • FIG. 9 shows a schematic section through a burner with three burner tubes,
  • FIG. 10 shows the diagram of a modified cooling of a burner,
  • FIG. 11 shows the circuit diagram of a circulating water heater,
  • Figure 12 shows another embodiment of the cooling of the burner.

Die in Figur 1 im Schema dargestellte Umlaufheizung umfaßt einen Brenner 1 und einen von diesem Brenner beheizten, in dessen Abgasführung angeordneten Wärmetauscher 2, an den der Vorlauf 3 und der Rücklauf 4 einer Umlaufheizung anschließen. Im Rück­lauf 4 befindet sich die dem Umlauf dienende Pumpe 5 und ein Ventil 6, das den Ausgang einer Zweigleitung 7 bildet, die über oder durch den Brenner 1 geführt ist und deren Wasser­durchsatz der Kühlung dieses Brenners 1 dient.The circulation heater shown in the diagram in FIG. 1 comprises a burner 1 and a heat exchanger 2 heated by this burner and arranged in its exhaust gas duct, to which the flow 3 and the return 4 of a circulation heater connect. In the return line 4 there is the circulation pump 5 and a valve 6, which forms the outlet of a branch line 7, which is passed over or through the burner 1 and whose water throughput is used to cool this burner 1.

Der Durchsatzregler, z.B. eine einstellbare Drossel 8, ist dem Brenner 1 in dieser Zweigleitung 7 vorgeordnet und regelt den Durchsatz des Kühlwassers. Eine Sicherheitseinrichtung 9 dient der Abschaltung des Brenners 1, z.B. bei Überschreitung eines bestimmten, am Brenner 1 gemessenenen Temperaturgrenzwertes oder bei Unterschreitung eines gewissen Mindestdurchsatzes an Wasser. Diese Sicherheitseinrichtung 9 befindet sich bei dem dargestellten Ausführungsbeispiel in Strömungsrichtung vor dem Brenner 1, sie könnte aber auch hinter ihm angeordnet sein, um die Temperatur des den Brenner 1 verlassenden Kühlwassers zu überwachen.The flow controller, e.g. an adjustable throttle 8, is upstream of the burner 1 in this branch line 7 and regulates the throughput of the cooling water. A safety device 9 is used to switch off the burner 1, e.g. if a certain temperature limit value measured on the burner 1 is exceeded or if the water flow falls below a certain minimum. In the exemplary embodiment shown, this safety device 9 is located in the flow direction in front of the burner 1, but it could also be arranged behind it in order to monitor the temperature of the cooling water leaving the burner 1.

Das den Durchsatz über die Zweigleitung 7 steuernde Ventil 6 kann diesen Durchsatz entweder nur phasenweise, also nur im Bedarfsfall, zur Kühlung des Brenners 1 freigeben oder auch-­in einem begrenzten Ausmaß - ständig.The valve 6 controlling the throughput via the branch line 7 can either release this throughput only in phases, ie only when necessary, for cooling the burner 1 or also — to a limited extent — continuously.

Die Regelung des Kühlwasserdurchsatzes kann in Abhängigkeit von der Temperatur oder der Leistung des Brenners 1 oder auch in Abhängigkeit vom Wasser- oder Brennstoffdurchsatz mittels der Drossel 8 durchgeführt werden.The regulation of the cooling water throughput can be carried out as a function of the temperature or the output of the burner 1 or also as a function of the water or fuel throughput by means of the throttle 8.

Gemäß der Ausführungsform nach Figur 2 ist eine einzelne Brennerkammer 10 eines Brenners von einem Brennerstab mit waagrecht verlaufender Längsachse 11 verkörpert. Dieser Brenner­kammer 10 wird über ein Mischrohr 12 und eine im Abstand vom Einlaß dieses Mischrohres 12 angeordneten Gasdüse 13 ein Brenn­stoff-Luft-Gemisch zugeführt, das aus Brennstoffaustrittsöffnun­gen 14 der oberseitigen Wandung der Brennerkammer 10 austritt und dort bei Zündung des Brenners die Brennerflammen bildet. Im Bereich dieser Brennstoffaustrittsöffnungen 14 ist ein in Längsrichtung der Brennerkammer 10 verlaufendes, Kühlwasser führendes Kühlrohr 15 mit seiner Längsachse 16 in einer schräg zur Waagrechten W verlaufenden Ebene S angeordnet. Dieses in ein nicht dargestelltes Umlaufsystem einbezogene Kühlrohr 15 verläuft demnach in Strömungsrichtung des Kühlwassers aufwärts unter einem spitzen Winkel α zur Waagrechten W.According to the embodiment according to FIG. 2, a single burner chamber 10 of a burner is embodied by a burner rod with a horizontally extending longitudinal axis 11. This burner chamber 10 is fed via a mixing tube 12 and a gas nozzle 13 arranged at a distance from the inlet of this mixing tube 12, a fuel-air mixture which emerges from fuel outlet openings 14 of the top wall of the burner chamber 10 and forms the burner flames there when the burner is ignited. In the area of these fuel outlet openings 14, a cooling pipe 15, which runs in the longitudinal direction of the burner chamber 10 and carries cooling water, is arranged with its longitudinal axis 16 in a plane S which runs obliquely to the horizontal W. This cooling pipe 15, which is included in a circulation system (not shown), therefore runs upward in the direction of flow of the cooling water at an acute angle α to the horizontal W.

Gemäß der Ausführungsform nach Figur 3 verlaufen solche Kühl­rohre 15 von den beiden Längsseiten eines zwei Brennerkammern 10 umfassenden Brenners 1 schräg aufwärts zu dessen Breitenmitte hin, und zwar münden sie in einen zu den Brennerkammern 1 paralllel verlaufenden höherliegenden Sammler 17.According to the embodiment according to FIG. 3, such cooling tubes 15 run obliquely upwards from the two longitudinal sides of a burner 1 comprising two burner chambers 10 towards the width center thereof, namely they open into a higher-level collector 17 running parallel to the burner chambers 1.

Bei der Ausführungsform nach Figur 4 hingegen verläuft eine Schar solcher Kühlrohre 15 von einem an einer Längsseite des zwei Brennerkammern 10 umfassenden Brenners 1 angeordneten Ver­teiler 18 zu einem an der gegenüberliegenden Längsseite ange­ordneten Sammler 17. Die Längsachsen 11 der Brennerkammern 10 befinden sich bei dieser Ausführungsform in einer waagrechten Ebene W.In the embodiment according to FIG. 4, on the other hand, a family of such cooling pipes 15 runs from a distributor 18 arranged on one long side of the burner 1 comprising two burner chambers 10 to a collector 17 arranged on the opposite long side. In this embodiment, the longitudinal axes 11 of the burner chambers 10 are located in a horizontal plane W.

Figur 5 zeigt, daß die Kühlrohre 15 zweckdienlicherweise zwischen den mit Abstand voneinander angeordneten Gruppen 19 der Brenn­ stoffaustrittsöffnungen 14 verlaufen sollten, um einerseits die Ausbildung der Brennerflammen nicht zu behindern, anderseits aber den heißen Kernbereich dieser Flammen möglichst nahe zu sein.FIG. 5 shows that the cooling tubes 15 are expediently located between the groups 19 of the distillation which are arranged at a distance from one another Substance outlet openings 14 should run so as not on the one hand to hinder the formation of the burner flames, but on the other hand to be as close as possible to the hot core area of these flames.

Figur 6 lehrt, daß die Längsachsen 11 der Brennerkammern 10 gleichfalls in einer schrägverlaufenden Ebene S angeordnet sein können, und zwar in einer Ebene S, die vorzugsweise unter dem gleichen spitzen Winkel α zur Waagrechten W verläuft wie die Kühlrohre 15.FIG. 6 teaches that the longitudinal axes 11 of the burner chambers 10 can likewise be arranged in an inclined plane S, specifically in a plane S which preferably runs at the same acute angle α to the horizontal W as the cooling pipes 15.

Schließlich zeigt noch Figur 7 eine Brennerkammer 10, die zum Unterschied gegenüber der Ausführungsform nach Figur 1 eben­falls mit einer unter einem spitzen Winkel α schrägverlaufen­den Längsachse 11 angeordnet ist, so daß das mit gleicher Schrägneigung verlaufende Kühlrohr 15 über die gesamte Länge der Brennerkammer 10 in dem für die Kühlwirkung optimalen ein­heitlichen Soll-Abstand von den Brennstoffaustrittsöffnungen 14 dieser Brennerkammer 10 verlaufen kann.Finally, FIG. 7 shows a burner chamber 10, which, in contrast to the embodiment according to FIG. 1, is also arranged with a longitudinal axis 11 that runs obliquely at an acute angle α, so that the cooling pipe 15, which runs at the same inclination, extends over the entire length of the burner chamber 10 in the for the cooling effect, the optimal uniform target distance from the fuel outlet openings 14 of this burner chamber 10 can run.

Gemäß der Ausführungsform nach Figur 8 ist der von einer Gasdüse 13 über einen Injektor 20 mit anschließender Mischkammer mit einem Brennstoff-Luft-Gemisch gespeisten Brennerkammer 10 zur Kühlung ein Kühlrohr 15 zugeordnet, das mit einem Rohr­strang 21 den Flammenbereich 22 des Brenners 1 durchläuft. Seitlich und oberhalb des Endabschnittes 23 dieses Flammen­bereiches 22 bildet das Kühlrohr 15 auf dem Weg zum Wärmetau­scher 2 einige Steigungen 24 in Form von Schleifen 25, in denen das Kühlwasser durch verstärkte Wärmeaufnahme zusätzlich erhitzt wird. Dadurch wird das Aufwärtsströmen des Kühlwassers auf Grund der Thermosiphonwirkung erheblich beschleunigt und ohne Zuhilfenahme einer Pumpe unterstützt.According to the embodiment according to FIG. 8, the cooling chamber 15, which is fed from a gas nozzle 13 via an injector 20 with a subsequent mixing chamber with a fuel-air mixture, is assigned a cooling pipe 15 which runs through the flame region 22 of the burner 1 with a pipe string 21. To the side and above the end section 23 of this flame region 22, the cooling pipe 15 forms some slopes 24 in the form of loops 25 on the way to the heat exchanger 2, in which the cooling water is additionally heated by increased heat absorption. This significantly accelerates the upward flow of the cooling water due to the thermosiphon effect and supports it without the aid of a pump.

Wie zunächst diese Figur 8 zeigt, können die die Steigungen 24 bildenden Schleifen 25 in einer zur Brennerkammer 10 etwa parallelen, lotrechten Ebene oberhalb des Endabschnittes 23 der Brennerkammer 10 verlaufen; solche Schleifen könnten aber auch von einem innerhalb der Brennkammer 26 um deren Achse gewendelten Rohrstrang gebildet sein.As FIG. 8 first shows, the loops 25 forming the slopes 24 can run in a vertical plane approximately parallel to the burner chamber 10 above the end section 23 of the burner chamber 10; however, such loops could also be formed by a tubing string coiled within the combustion chamber 26 about its axis.

Gemäß der Ausführungsform nach Figur 9 verlaufen die als Schlei­fen 25 ausgebildeten Steigungen 24 bei einer rohrförmigen Brennerkammer 10 in einer zu deren Längsachse 11 senkrechten Ebene, Z.B. an der Hinterwand eines Wasserheizers.According to the embodiment according to FIG. 9, the slopes 24 designed as loops 25 run in the case of a tubular burner chamber 10 in a plane perpendicular to its longitudinal axis 11, e.g. on the back wall of a water heater.

Eine wünschenswert verstärkte Erhitzung des Kühlwassers im Endabschnitt 23 des Flammenbereiches 22 einer Brennerkammer 10 kann ferner gemäß Figur 10 durch eine oberhalb des Endab­schnittes 23 innerhalb einer Brennkammer 26 gebildete Abwinke­lung 27 des Kühlrohres 15 erzielt werden, die in eine lotrechte Steigung 24 übergeht. Diese dargestellte Ausführungsform eignet sich besonders für den Brenner eines Wasserheizers, in dessen Heizwasserumlauf - gemäß Figur 11 - eine Umlaufpumpe 5 einbe­zogen werden soll.A desirably increased heating of the cooling water in the end section 23 of the flame region 22 of a burner chamber 10 can also be achieved according to FIG. 10 by means of an angled portion 27 of the cooling tube 15 formed above the end section 23 within a combustion chamber 26, which changes into a vertical slope 24. This embodiment shown is particularly suitable for the burner of a water heater, in whose heating water circulation - according to FIG. 11 - a circulation pump 5 is to be included.

Bei einem solchen Wasserheizer geht von dessen Wärmetauscher 2 der Vorlauf 3 aus und in den Wärmetauscher 2 mündet der Rück­lauf 4, von dem eine Zweigleitung 7 den durch den Flammen­bereich 22 geführten Kühlrohrstrang 21 umfaßt, der seiner­seits über die Abwinkelung 27 in der lotrechten Steigung 24 aufwärts in den Vorlauf 3 mündet.In such a water heater, the flow 3 starts from its heat exchanger 2 and the return 4 opens into the heat exchanger 2, from which a branch line 7 comprises the cooling pipe line 21 guided through the flame region 22, which in turn leads upwards via the bend 27 in the vertical slope 24 flows into the lead 3.

In diesem Fall sorgt die Umlaufpumpe 5 auch für den Durchstrom in der Zweigleitung 7; die Umlaufpumpe 5 könnte aber selbst­verständlich auch an anderer Stelle, z.B. im Rücklauf 4, ange­ordnet sein.In this case, the circulation pump 5 also ensures the throughflow in the branch line 7; the circulation pump 5 could of course also be arranged elsewhere, for example in the return 4.

Bei einem Brenner mit mehreren zueinander parallel angeordneten Brennerkammern 10 können - wie Figur 12 zeigt - die diesen Brennerkammern 10 zugeordneten, durch deren Flammenbereich geführten Kühlrohre 15 innerhalb der Brennkammer 26 mittels Stützen 28 solide gehalten werdenIn the case of a burner with a plurality of burner chambers 10 arranged parallel to one another, as shown in FIG. 12, the cooling tubes 15 assigned to these burner chambers 10 and guided through their flame area can be held solidly within the combustion chamber 26 by means of supports 28

Um die Reinigung der Brennerkammern und des Kühlsystems zu er­leichtern, sollten diese Brennerkammern 10 ausbaubar sein.In order to facilitate the cleaning of the burner chambers and the cooling system, these burner chambers 10 should be removable.

Claims (24)

1. Umlaufwasserheizer mit einem Brenner sowie einem von diesem Brenner beheizten und an einen Vorlauf und einen Rücklauf des Heizwassers angeschlossenen Wärmetauscher, dadurch gekennzeichnet, daß zumindest ein Teil des Rücklaufwassers zur Kühlung des Brenners (1) dient.1. Circulating water heater with a burner and a heat exchanger heated by this burner and connected to a flow and a return of the heating water, characterized in that at least part of the return water serves to cool the burner (1). 2.Umlaufwasserheizer nach Patentanspruch 1, dadurch gekennzeich­net, daß der Rücklauf (4) des Heizwasscrs über den Brenner (1) geführt ist.2. Umlaufwasserheizer according to claim 1, characterized in that the return (4) of the Heizwasscrs over the burner (1) is guided. 3. Umlaufwasserheizer nach Patentanspruch 1, dadurch gekennzeich­net, daß an den Rücklauf (4) eine Zweigleitung (7) angeschlossen ist, über die dem Rücklauf (4) ein der Kühlung des Brenners (1) dienender Anteil des Rücklaufwassers entnehmbar ist (Fig.1).3. Circulating water heater according to claim 1, characterized in that a branch line (7) is connected to the return (4), via which the return (4) a cooling of the burner (1) serving portion of the return water can be removed (Fig.1 ). 4. Umlaufwasserheizer nach Patentanspruch 3, dadurch gekennzeich­net, daß in dieser Zweigleitung (7) dem Brenner (1) eine Drossel (8) zur Regelung des dem Brenner (1) zu dessen Kühlung zugeführten Anteiles vorgeordnet ist (Fig.1).4. Circulating water heater according to claim 3, characterized in that in this branch line (7) the burner (1) a throttle (8) for controlling the burner (1) for cooling its portion is arranged upstream (Fig.1). 5. Umlaufwasserheizer nach Patentanspruch 3 oder 4, gekennzeich­net durch eine in der Zweigleitung (7) angeordnete, im Be­darfsfall, z.B. bei Überschreitung eines Temperaturgrenz­wertes oder eines Durchsatzgrenzwertes, die Brennstoffzufuhr zum Brenner drosselnde oder sperrende Sicherheitseinrichtung (9) (Fig.1).5. Circulating water heater according to claim 3 or 4, characterized by a in the branch line (7) arranged, if necessary, for example when exceeding a temperature limit or a throughput limit, the fuel supply to the burner throttling or blocking safety device (9) (Fig.1). 6. Umlaufwasserheizer nach einem der Patentansprüche 3 bis 5, dadurch gekennzeichnet, daß ein den Eingang der Zweiglei­tung (7) bildendes, deren Durchsatz steuerndes Ventil (6) einer dem Umlauf dienenden Pumpe (5) der Heizwasserumlauf­leitung (3,4) nachgeordnet ist (Fig.1).6. circulating water heater according to one of the claims 3 to 5, characterized in that a the input of the branch line (7) forming, the flow controlling valve (6) of a circulation pump (5) of the heating water circulation line (3,4) is arranged ( Fig.1). 7. Umlaufwasserheizer nach einem der Patentansprüche 1 bis 7, mit einem Brenner, insbesondere Gasbrenner, dessen Brenner­kammer an ihrer Oberseite von Brennstoffaustrittsöffnungen durchsetzt ist, dadurch gekennzeichnet, daß diesen Brennstoff­austrittsöffnungen (14) zumindest ein der Heizwasserumlauf­leitung (3,4) angeschlossenes oder zugehöriges Kühlrohr (15) zugeordnet ist (Fig. 2 bis 12).7. circulating water heater according to one of claims 1 to 7, with a burner, in particular gas burner, the burner chamber is penetrated by fuel outlet openings on its top, characterized in that these fuel outlet openings (14) at least one of the heating water circulation line (3,4) connected or associated cooling tube (15) is assigned (Fig. 2 to 12). 8. Umlaufwasserheizer nach Patentanspruch 7, dadurch gekennzeich­net, daß dieses Kühlrohr (15) in bezug zur Waagrechten (W) unter einem Winkel ( α ) in Strömungsrichtung aufwärtsverlaufend angeordnet ist (Fig. 2 bis 12).8. circulating water heater according to claim 7, characterized in that this cooling tube (15) with respect to the horizontal (W) is arranged at an angle (α) in the flow direction upward (Fig. 2 to 12). 9. Umlaufwasserheizer nach Patentanspruch 8, dadurch gekennzeich­net, daß dieses Kühlrohr (15) unter einem spitzen Winkel ( α ) zur Waagrechten (W) in Längsrichtung der Achse (11) der Bren­nerkammer (10) verlaufend angeordnet ist (Fig. 2,7).9. Circulating water heater according to claim 8, characterized in that this cooling tube (15) is arranged at an acute angle (α) to the horizontal (W) in the longitudinal direction of the axis (11) of the burner chamber (10) (Fig. 2.7) . 10. Umlaufwasserheizer nach Patentanspruch 9, dadurch gekennzeich­net, daß die Achse (11) der Brennerkammer (10) in einer waag­rechten Ebene (W) verläuft (Fig. 2).10. Circulating water heater according to claim 9, characterized in that the axis (11) of the burner chamber (10) extends in a horizontal plane (W) (Fig. 2). 11. Umlaufwasserheizer nach Patentanspruch 9, dadurch gekennzeich­ net, daß die Achse (11) der Brennerkammer (10) in einer schräg zur Waagrechten (W) unter einem Winkel ( α ) geneigten Ebene (S) verläuft (Fig.7).11. Circulating water heater according to claim 9, characterized net that the axis (11) of the burner chamber (10) in an oblique to the horizontal (W) at an angle (α) inclined plane (S) (Fig.7). 12. Umlaufwasserheizer nach Patentanspruch 10, dadurch gekenn­zeichnet, daß die Achse (16) des Kühlrohres (15) und die Achse (11) der Brennerkammer (10) in Ebenen (S) verlaufen, die den gleichen Winkel ( α) mit der Waagrechten (W) ein­schließen (Fig.7).12. Circulating water heater according to claim 10, characterized in that the axis (16) of the cooling tube (15) and the axis (11) of the burner chamber (10) extend in planes (S) which have the same angle (α) with the horizontal ( W) (Fig.7). 13. Umlaufwasserheizer nach Patentanspruch 7 oder 8, dadurch gekennzeichnet, daß das Kühlrohr (15), vorzugsweise eine Schar zueinander paralleler Kühlrohre (15), in einer schräg zur Waagrechten (W) unter einem spitzen Winkel ( α ) geneig­ten Ebene (S) quer zur Längsrichtung zumindest einer Brenner­kammer (10) verläuft (Fig. 3 bis 6).13. Circulating water heater according to claim 7 or 8, characterized in that the cooling tube (15), preferably a set of parallel cooling tubes (15), transversely in an oblique to the horizontal (W) at an acute angle (α) inclined plane (S) to the longitudinal direction of at least one burner chamber (10) (Fig. 3 to 6). 14. Umlaufwasserheizer nach Patentanspruch 13, dadurch gekenn­zeichnet, daß das Kühlrohr (15) bzw. die Kühlrohrschar (15) zwischen mit Abstand voneinander angeordneten Gruppen (19) on Brennstoffaustrittsöffnungen (14) der Brennerkammer (10) verläuft (Fig.5).14. Circulating water heater according to claim 13, characterized in that the cooling pipe (15) or the cooling pipe family (15) between spaced groups (19) on fuel outlet openings (14) of the burner chamber (10) (Fig.5). 15. Umlaufwasserheizer nach Patentanspruch 13 oder 14 , dadurch gekennzeichnet, daß die Kühlrohre (15) von einer Längsseite der Brennerkammer (10) bzw. einer Schar solcher Brennerkammern (10) mit einheitlicher Schrägneigung ( α) zur gegenüber­liegenden Längsseite verlaufen (Fig. 4 bis 6).15. Circulating water heater according to claim 13 or 14, characterized in that the cooling tubes (15) from a longitudinal side of the burner chamber (10) or a group of such burner chambers (10) with a uniform inclination (α) to the opposite longitudinal side (Fig. 4 to 6). 16. Umlaufwasserheizer nach Patentanspruch 13 oder 14, dadurch gekennzeichnet, daß Kühlrohre (15) von beiden Längsseiten einer Brennerkammer (10) bzw. einer Schar solcher Brenner­kammern (10) zu dessen bzw. deren Mitte hin schräg aufwärts verlaufen (Fig.3).16. Circulating water heater according to claim 13 or 14, characterized in that cooling tubes (15) from both longitudinal sides of a burner chamber (10) or a group of such burner chambers (10) to its or its center obliquely upward (Fig.3). 17. Umlaufwasserheizer nach einem der Patentansprüche 13 bis 16, dadurch gekennzeichnet, daß die Achsen (16) der Kühlrohre (15) und die Achsen (11) der Brennerkammern (10) in schräg zur Waagrechten (W), vorzugsweise zueinander parallel ver­laufenden Ebenen (S) angeordnet sind (Fig.6).17. Circulating water heater according to one of the claims 13 to 16, characterized in that the axes (16) of the cooling tubes (15) and the axes (11) of the burner chambers (10) in planes which run obliquely to the horizontal (W), preferably parallel to one another ( S) are arranged (Fig. 6). 18. Umlaufwasserheizer nach Patentanspruch 7 oder 8, gekennzeich­net durch zumindest eine vom Kühlrohr (15) oberhalb zumindest eines der Endabschnitte (23) der Brennerkammer (10) gebildete Steigung (24) (Fig. 8 bis 12).18. Circulating water heater according to claim 7 or 8, characterized by at least one of the cooling tube (15) above at least one of the end sections (23) of the burner chamber (10) formed slope (24) (Fig. 8 to 12). 19. Umlaufwasserheizer nach Patentanspruch 18, dadurch gekenn­zeichnet, daß die Steigung (24) als eine Schleife (25) in einer zur Achse der Brennerkammer (10) parallelen, etwa lotrechten Ebene ausgebildet ist (Fig.8).19. Circulating water heater according to claim 18, characterized in that the slope (24) is designed as a loop (25) in an approximately perpendicular plane parallel to the axis of the burner chamber (10) (Fig. 8). 20. Umlaufwasserheizer nach Patentanspruch 18, dadurch gekenn­zeichnet, daß die Steigung (24) als eine Schleife (25) in einer zur Achse der Brennerkammer (10) senkrechten, etwa lotrechten Ebene ausgebildet ist (Fig.9).20. Circulating water heater according to claim 18, characterized in that the slope (24) is designed as a loop (25) in an approximately perpendicular plane to the axis of the burner chamber (10) (Fig. 9). 21. Umlaufwasserheizer nach Patentanspruch 18, gekennzeichnet durch eine in eine oberhalb des Endabschnittes (23) der Brennerkammer (10) in eine Steigung (24) übergehende Abwin­kelung (27) des Kühlrohres (15) (Fig. 10 bis 12).21. Circulating water heater according to claim 18, characterized by a in one above the end portion (23) Burner chamber (10) into an incline (24) which bends (27) the cooling tube (15) (FIGS. 10 to 12). 22. Umlaufwasserheizer nach Patentanspruch 21, dadurch gekenn­zeichnet, daß der abgewinkelte Kühlrohrstrang (15) in dieser Steigung (24) etwa lotrecht oberhalb des Endabschnittes (23) und innerhalb der Brennkammer (26) des Wasserheizers ver­läuft (Fig.10).22. Circulating water heater according to claim 21, characterized in that the angled cooling tube strand (15) runs approximately perpendicularly above the end section (23) and within the combustion chamber (26) of the water heater in this slope (24) (Fig. 10). 23. Umlaufwasserheizer nach Anspruch 21 oder 22 mit mehreren zu­einander parallel angeordneten Brennerkammern, dadurch ge­kennzeichnet, daß daß die von einem gemeinsamen Verteiler (18) ausgehenden Kühlrohre (15) etwa waagrecht über die Flammenbereiche (22) dieser Brennerkammern (10) verlaufen und aufwärts abgewinkelt mit ihren etwa lotrecht verlaufenden Steigungen (24) in einen oberhalb ihrer Abwinkelungen (27) angeordneten Sammler (17) münden (Fig.12).23. Circulating water heater according to claim 21 or 22 with a plurality of burner chambers arranged parallel to one another, characterized in that the cooling tubes (15) extending from a common distributor (18) run approximately horizontally over the flame regions (22) of these burner chambers (10) and are angled upwards with their approximately perpendicular slopes (24) lead into a collector (17) arranged above their bends (27) (Fig. 12). 24. Umlaufwasserheizer nach einem der Patentansprüche 3 bis 23, dadurch gekennzeichnet, daß die sich über den Flammenbereich (22) des Brenners (1) erstreckenden Kühlrohrstränge (15) von Abschnitten einer vom Rücklauf (4) des Heizwasser­umlaufes (3,4) vor dem Wärmetauscher (2) abzweigenden und nach dem Wärmetauscher (2) in dessen Vorlauf (3) einmündenden Zweigleitung (7) ausgebildet sind (Fig.11).24. Circulating water heater according to one of claims 3 to 23, characterized in that the over the flame region (22) of the burner (1) extending cooling tube strands (15) of sections of one of the return (4) of the heating water circulation (3, 4) before Heat exchanger (2) branching and after the heat exchanger (2) in the flow (3) opening branch line (7) are formed (Fig.11).
EP88730237A 1987-11-03 1988-10-26 Heater for circulating water Expired - Lifetime EP0315579B1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AT290087A AT391937B (en) 1987-11-03 1987-11-03 Closed-circuit water heating system
AT289087A AT393020B (en) 1987-11-03 1987-11-03 Burner, in particular gas burner
AT2890/87 1987-11-03
AT2900/87 1987-11-03
AT66/88 1988-01-14
AT0006688A ATA6688A (en) 1988-01-14 1988-01-14 DEVICE FOR COOLING A BURNER

Publications (2)

Publication Number Publication Date
EP0315579A1 true EP0315579A1 (en) 1989-05-10
EP0315579B1 EP0315579B1 (en) 1993-01-07

Family

ID=27145806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88730237A Expired - Lifetime EP0315579B1 (en) 1987-11-03 1988-10-26 Heater for circulating water

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EP (1) EP0315579B1 (en)
AT (1) ATE84361T1 (en)
DE (2) DE3877329D1 (en)
ES (1) ES2038336T3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015148A1 (en) * 1989-05-20 1990-11-22 Vaillant Joh Gmbh & Co Water heater with burner and two=part heat exchanger - has one part of heat exchanger in flame to extract hot flow and intensify flame
EP0833113A3 (en) * 1996-09-30 1998-07-15 Vogt Energie-Sparaggregate Boiler
NL1006891C2 (en) * 1997-08-29 1999-03-02 Stork J E Ventilatoren Bv Heating plant with burner
US7494337B2 (en) * 2004-04-22 2009-02-24 Thomas & Betts International, Inc. Apparatus and method for providing multiple stages of fuel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI557383B (en) * 2014-09-02 2016-11-11 Grand Mate Co Ltd Water heater and its secondary heat exchanger

Citations (7)

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Publication number Priority date Publication date Assignee Title
DE600108C (en) * 1932-08-11 1934-07-23 Rudolf Hieronymus Boehling boiler
US2143874A (en) * 1937-03-16 1939-01-17 Hagenson Peder Water heating coil
DE1778074A1 (en) * 1968-03-26 1972-02-17 Gaggenau Eisenwerk boiler
FR2296820A1 (en) * 1974-12-31 1976-07-30 Rocheteau Michel Boiler for domestic central heating - has heating coil within combustion chamber for rapid heating of part flow
EP0025769A2 (en) * 1979-09-11 1981-03-25 Ingbert Trunz Boiler for hot water heating
US4525141A (en) * 1983-07-11 1985-06-25 Gas Research Institute Regulation of blue flame combustion emissions
WO1987003068A1 (en) * 1985-11-15 1987-05-21 Joh. Vaillant Gmbh U. Co Gas burner with cooling pipes for the flames of the burner

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600108C (en) * 1932-08-11 1934-07-23 Rudolf Hieronymus Boehling boiler
US2143874A (en) * 1937-03-16 1939-01-17 Hagenson Peder Water heating coil
DE1778074A1 (en) * 1968-03-26 1972-02-17 Gaggenau Eisenwerk boiler
FR2296820A1 (en) * 1974-12-31 1976-07-30 Rocheteau Michel Boiler for domestic central heating - has heating coil within combustion chamber for rapid heating of part flow
EP0025769A2 (en) * 1979-09-11 1981-03-25 Ingbert Trunz Boiler for hot water heating
US4525141A (en) * 1983-07-11 1985-06-25 Gas Research Institute Regulation of blue flame combustion emissions
WO1987003068A1 (en) * 1985-11-15 1987-05-21 Joh. Vaillant Gmbh U. Co Gas burner with cooling pipes for the flames of the burner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015148A1 (en) * 1989-05-20 1990-11-22 Vaillant Joh Gmbh & Co Water heater with burner and two=part heat exchanger - has one part of heat exchanger in flame to extract hot flow and intensify flame
FR2647192A1 (en) * 1989-05-20 1990-11-23 Vaillant Sarl WATER HEATER
GB2233077A (en) * 1989-05-20 1991-01-02 Vaillant Joh Gmbh & Co Fluids heaters such as boilers
GB2233077B (en) * 1989-05-20 1993-05-19 Vaillant Joh Gmbh & Co Means for heating a fluid
AT399565B (en) * 1989-05-20 1995-06-26 Vaillant Gmbh METHOD AND DEVICE FOR HEATING A LIQUID
EP0833113A3 (en) * 1996-09-30 1998-07-15 Vogt Energie-Sparaggregate Boiler
NL1006891C2 (en) * 1997-08-29 1999-03-02 Stork J E Ventilatoren Bv Heating plant with burner
US7494337B2 (en) * 2004-04-22 2009-02-24 Thomas & Betts International, Inc. Apparatus and method for providing multiple stages of fuel

Also Published As

Publication number Publication date
EP0315579B1 (en) 1993-01-07
DE3877329D1 (en) 1993-02-18
ES2038336T3 (en) 1993-07-16
ATE84361T1 (en) 1993-01-15
DE3836845A1 (en) 1989-05-18

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