EP0118539B1 - Hot water tank heated by fuel - Google Patents

Hot water tank heated by fuel Download PDF

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Publication number
EP0118539B1
EP0118539B1 EP83902986A EP83902986A EP0118539B1 EP 0118539 B1 EP0118539 B1 EP 0118539B1 EP 83902986 A EP83902986 A EP 83902986A EP 83902986 A EP83902986 A EP 83902986A EP 0118539 B1 EP0118539 B1 EP 0118539B1
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EP
European Patent Office
Prior art keywords
annular space
water storage
storage apparatus
fuel
heated water
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Expired
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EP83902986A
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German (de)
French (fr)
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EP0118539A1 (en
Inventor
Franz Wilhelm
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Individual
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Individual
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Priority to AT83902986T priority Critical patent/ATE23628T1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • 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
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/223—Temperature of the water in the water storage tank
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners

Definitions

  • the present invention relates to a fuel-heated water reservoir according to the preamble of the main claim.
  • Such fuel-heated water storage tanks are generally used to heat warm service water. They have a hollow cylindrical water reservoir, the center of which is formed by a flame tube which is swept by exhaust gases from a burner that heats the water reservoir.
  • a fuel-heated water storage device for feeding a central heating system, it has already been proposed to insert a pipe coil into the water storage device which is connected to the central heating system.
  • the disadvantage here is that the total hot water content must be heated before hot water can be delivered to the central heating system.
  • Such a water reservoir has become known from CH-A-382 203. It has a central firebox below, into which a lintel burner protrudes. A flame tube is arranged above the combustion chamber, through which the exhaust gases can withdraw. The flame chamber is surrounded by an annular space containing heating water, which is divided into two partial annular spaces by a vertical baffle, which are freely connected at the top and bottom. The return connection of the heater opens at the bottom, approximately at the level of the end of the lintel burner, and the flow connection of the heater opens at the uppermost point of the annulus mentioned. The annulus is in turn surrounded by another annulus, which represents a domestic hot water tank.
  • This annular space is flushed on its front underside and on the inside of its jacket by the heating water and is heated by it.
  • the temperature of the heating water inevitably corresponds approximately to the domestic water temperature.
  • a thermal separation of the two temperatures is hardly possible, since the heating water must be circulated in the annular spaces to transfer heat from the burner gases to the process water.
  • a hot water boiler is known from NL-A-6 516 660, which is designed as a horizontal cylinder.
  • the central interior is formed by a flame tube, which is surrounded by an annular space that heats the water in a central heating system.
  • the jacket of this annulus is provided with fins, which in turn serve to transfer the heat originally given off by the burner to the heating water to the service water.
  • the temperatures of the heating water and process water are linked to each other, since the former is used as a heat transfer medium.
  • FR-A-2442408 shows an upright cylindrical water reservoir with a central flame tube which is traversed by exhaust gases from a burner arranged below. Annular spaces are arranged directly around the flame tube, which serve to heat water in a central heating system. Here, too, it is necessary to first heat the water in the central heating system before the heat can be transferred to the domestic water. This also results in a thermal coupling between the attainable temperatures of the process water and the heating water.
  • the present invention is therefore based on the object of preventing this thermal coupling between the temperatures of the process water and the heating water during heating operation.
  • the invention proposes the features evident from the characterizing part of the main claim.
  • the figure shows a schematic longitudinal sectional view of a gas-heated storage.
  • the gas-heated storage tank has a housing 1 provided with an insulating layer, which consists of a cylinder jacket 2, a base plate 3 and a cover plate 4 provided with recesses, which are tightly connected to one another on all sides.
  • the central interior of the housing 1 is formed by a flame tube 5, to which a gas burner 7 is assigned at its end 6 which widens below and is fed via a gas line 9 provided with a fuel solenoid valve 8.
  • gas instead of gas as an energy source, oil or a solid fuel could also be used.
  • the wall of the flame tube forms a heat exchanger to form a double annular space 10 which extends around the cylinder jacket of the flame tube and which forms two legs 11 and 12 which are separated from one another by a separating plate 13 and have the shape of a U with a deflection 14 located at the bottom in the burner area .
  • a flow line 15 is connected in the area of the cover 4, in which a circulation pump 17 driven by a motor 16 and a three-way switching valve 18 are arranged, which can be adjusted by a servomotor 19.
  • the motor 16 or the servomotor 19 are connected via a control line 20 to a regulating and control device 21, which controls the solenoid valve to the burner 7 via a line 22 and to which a temperature sensor 24 is connected via a measuring line 23, which in the interior 25 of the Water storage is arranged.
  • the flame tube 5 and the double annulus 10 form cylinder or annular cylinder spaces lying concentrically to a common axis of symmetry.
  • a further annular space 26 extends around the double annular space 10 and is separated from the double annular space 10 by a third annular space 27.
  • the individual annular spaces 26, 27, 11 and 12 are separated from one another by annular plates 28. While the third annular space is connected to the atmosphere via an annular recess 29 in the area of the cover, the further annular space 26 is connected to a connection of the three-way valve 18 via a return line connection 30 - likewise provided in the area of the cover 4.
  • a flow line 31 leads to a consumer, not shown, which can consist of a series and / or parallel connection of a plurality of radiators and which is connected on the return side to a return line 32, the connecting piece of which in the area of the cover in the outer leg 12 of the double annulus 10 opens.
  • the interior 25 of the water reservoir 33 extends around the further annular space 26 and is delimited inwards by the separating plate 28 of the further annular space 16 and from the outside by the jacket 2 of the housing 1.
  • a connecting line 35 is provided, which extends approximately from the lowest point of the further annular space 26 to the deflection point 14 between the two legs 11 and 12 of the double annular space 10. Both the legs 11 and 12 and the annular spaces 26 and 27 expand in the lower region 34, as does the interior of the flame tube 5. This expansion is at the expense of the interior 25 of the water reservoir 33, which does not extend down to the region of the base 3, but instead ends at a distance from it.
  • a cold water supply pipe 36 opens into the lower area of the interior 25, from which a service water tap pipe 37 branches off in the uppermost area.
  • the inside of the further annular space 26 facing the third annular space 27 can be provided with an insulating layer 38.
  • the temperature sensor 24 is arranged in the lower region 34 of the interior 25 of the water reservoir 33.
  • the fuel-heated water storage tank has the following function: If this storage tank is only used to prepare warm service water. and the temperature sensor 24 requests heat, so result from the control and regulating device 21 control signals for opening the solenoid valve 8, for starting the motor 16 of the circulating pump 17, for adjusting the three-way valve 18 in such a direction that the flow 31 is shut off.
  • the burner starts up and draws in fresh air through the air opening 29 and the third annular space 27.
  • the exhaust gas generated by the burner 7 rises in the flame tube 5 and leaves the water reservoir via an exhaust pipe, not shown, in a continuation of the flame tube 5.
  • the exhaust gases from the burner hereby heat the flame tube 5, from which the heat is transferred to the inner leg 11 of the double annulus 10.
  • water circulates here, which reaches the further annular space 26 from the three-way valve via line 30. From here, the water flows via the connecting line 35 to the deflection point 14 of the double annular space 10, which it leaves at the upper end of the inner leg 11, specifically through the supply line 15. It is pointed out that the pump 17 can also be arranged in the return line 30 .
  • the circulating water thus contributes, on the one hand, to absorb heat from the hot exhaust gases of the burner passing through the flame tube and, on the other hand, to dissipate it via the plate 28, which separates the interior 25 of the storage container 33 from the hollow cylinder space of the further annular space.
  • the three-way valve 18 is switched accordingly by the servomotor 19.
  • the pump then conveys heated flow water from line 15 into the flow line 31 to the radiators (not shown), from which the water is returned via the return line 32 to the outer leg 12 of the double annulus 10, namely at its upper end on the cover side.
  • This cool return water flows through both legs of the double annulus and leaves the water reservoir through the feed line 15.
  • This circuit does not heat the process water.
  • the insulation 38 largely protects the water stored in the interior 25 of the water storage container 33 against the cool fresh air which passes through the third annular space 27. It would be possible to carry out the insulation over the entire height of the housing 1 on the sheet metal 28, which shields the third annular space 27 from the outside from the further annular space 26, so that the medium flowing into the further annular space 26 from the fresh supply air supplied does not flow during process water heating is cooled. The same insulation could also be carried out on the outside of the plate 28. that limits the outer leg 12 of the double annulus 10.
  • ring plates which can be made of steel or aluminum
  • ceramic tubes can also be used. It is also possible to let the water reservoir work tilted by 90 ° so that the axis of symmetry is not arranged vertically but horizontally and a gas or oil blower burner is provided as the burner.
  • the opening 29 can be closed and a new supply air opening can be arranged in the area of the base cover 3.
  • the air-guiding annular space 27 enables thermal separation of the process water from the water supplying the heating. This has the advantage of keeping the process water at a temperature which differs from the water supplying the heating, in particular a higher temperature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

In a hot water tank heated by fuel and provided with an annular compartment filled with water and arranged in a housing, the center of the compartment being traversed by a flue tube (5) heated by burned gas from a burner (7), an annular heating chamber (10) for the water of a heating installation is arranged between the flue tube (5) and the inner wall (28) of the water tank (33). The heating water may heat either the radiators of a heating installation or the inner wall of the water tank if a three-way valve (18) is switched. The temperature of the water which has been used is thereby independent from the heating temperature.

Description

Die vorliegende Erfindung bezieht sich auf einen brennstoffbeheizten Wasserspeicher gemäß dem Oberbegriff des Hauptanspruchs.The present invention relates to a fuel-heated water reservoir according to the preamble of the main claim.

Solche brennstoffbeheizten Wasserspeicher werden in der Regel zur Beheizung warmen Gebrauchswassers eingesetzt. Sie weisen einen hohlzylindrischen Wasserspeicher auf, dessen Zentrum von einem Flammrohr gebildet ist, das von Abgasen eines den Wasserspeicher erhitzenden Brenners durchstrichen ist. Um einen solchen brennstoffbeheizten Wasserspeicher zur Speisung einer Zentralheizungsanlage verwenden zu können, ist es bereits vorgeschlagen worden, in den Wasserspeicher eine Rohrschlange einzubringen, die an die Zentralheizungsanlage angeschlossen wird. Der Nachteil hierbei ist, daß der gesamte Brauchwasserinhalt aufgeheizt werden muß, bevor an die Zentralheizungsanlage warmes Wasser abgegeben werden kann.Such fuel-heated water storage tanks are generally used to heat warm service water. They have a hollow cylindrical water reservoir, the center of which is formed by a flame tube which is swept by exhaust gases from a burner that heats the water reservoir. In order to be able to use such a fuel-heated water storage device for feeding a central heating system, it has already been proposed to insert a pipe coil into the water storage device which is connected to the central heating system. The disadvantage here is that the total hot water content must be heated before hot water can be delivered to the central heating system.

Ein solcher Wasserspeicher ist aus der CH-A-382 203 bekanntgeworden. Er weist einen unten liegenden zentralen Feuerraum auf, in den ein Sturzbrenner hineinragt. Oberhalb des Brennraums ist ein Flammrohr angeordnet, durch das die Abgase abziehen können. Der Flammraum ist umgeben von einem ringförmigen heizungswasserenthaltenden Raum, der durch ein senkrechtstehendes Ablenkblech in zwei Teilringräume unterteilt ist, die oben und unten frei miteinander verbunden sind. An der Unterseite etwa in der Höhe des Endes des Sturzbrenners mündet der Rücklaufanschluß der Heizung, der Vorlaufanschluß der Heizung mündet an der obersten Stelle des erwähnten Ringraumes ab. Der Ringraum ist seinerseits von einem weiteren Ringraum umgeben, der einen Brauchwasserspeicher darstellt. Dieser Ringraum ist an seiner stirnseitigen Unterseite und an seinem Mantel auf der Innenseite vom Heizungswasser umspült und wird durch dieses erwärmt. Bei einer Erwärmung des Brauchwassers ist es mithin notwendig, das gesamte Heizungswasser zu erwärmen, außerdem stimmt die Temperatur des Heizungswassers zwangsläufig mit der Brauchwassertemperatur etwa überein. Eine thermische Trennung beider Temperaturen ist kaum möglich, da zur Wärmeübertragung von den Brennergasen auf das Brauchwasser eine Zirkulation des Heizungswassers in den Ringräumen zwingend notwendig ist.Such a water reservoir has become known from CH-A-382 203. It has a central firebox below, into which a lintel burner protrudes. A flame tube is arranged above the combustion chamber, through which the exhaust gases can withdraw. The flame chamber is surrounded by an annular space containing heating water, which is divided into two partial annular spaces by a vertical baffle, which are freely connected at the top and bottom. The return connection of the heater opens at the bottom, approximately at the level of the end of the lintel burner, and the flow connection of the heater opens at the uppermost point of the annulus mentioned. The annulus is in turn surrounded by another annulus, which represents a domestic hot water tank. This annular space is flushed on its front underside and on the inside of its jacket by the heating water and is heated by it. When the domestic hot water is heated, it is therefore necessary to heat the entire heating water; moreover, the temperature of the heating water inevitably corresponds approximately to the domestic water temperature. A thermal separation of the two temperatures is hardly possible, since the heating water must be circulated in the annular spaces to transfer heat from the burner gases to the process water.

Aus der NL-A-6 516 660 ist ein Warmwasserkessel bekanntgeworden, der als liegender Zylinder gestaltet ist. Den zentralen Innenraum bildet ein Flammrohr, das von einem Ringraum umgeben ist, das das Wasser einer Zentralheizungsanlage erwärmt. Der Mantel dieses Ringraums ist mit Lamellen versehen, die ihrerseits zu einer Übertragung des ursprünglich vom Brenner auf das Heizungswasser abgegebenen Wärme seinerseits auf das Brauchwasser dienen. Auch hier sind die Temperaturen des Heizungswassers und Brauchwassers miteinander gekoppelt, da ersteres als Wärmeübertragungsmedium benutzt wird.A hot water boiler is known from NL-A-6 516 660, which is designed as a horizontal cylinder. The central interior is formed by a flame tube, which is surrounded by an annular space that heats the water in a central heating system. The jacket of this annulus is provided with fins, which in turn serve to transfer the heat originally given off by the burner to the heating water to the service water. Here, too, the temperatures of the heating water and process water are linked to each other, since the former is used as a heat transfer medium.

Die FR-A-2442408 zeigt einen aufrechtstehenden zylindrischen Wasserspeicher mit einem zentralen Flammrohr, das von Abgasen eines unten angeordneten Brenners durchsetzt wird. Unmittelbar um das Flammrohr sind Ringräume angeordnet, die zur Aufheizung von Wasser einer Zentralheizung dienen. Auch hier ist es also notwendig, zunächst das Wasser der Zentralheizungsanlage zu erwärmen, bevor die Wärme an das Brauchwasser übertragen werden kann. Auch hieraus resultiert eine thermische Kopplung zwischen der erzielbaren Temperaturen des Brauchwassers und des Heizungswassers.FR-A-2442408 shows an upright cylindrical water reservoir with a central flame tube which is traversed by exhaust gases from a burner arranged below. Annular spaces are arranged directly around the flame tube, which serve to heat water in a central heating system. Here, too, it is necessary to first heat the water in the central heating system before the heat can be transferred to the domestic water. This also results in a thermal coupling between the attainable temperatures of the process water and the heating water.

Schließlich ist aus der DE-A-1 814 902 ein senkrechtstehender zylindrischer Wasserspeicher mit zentralem Flammrohr und unten angeordnetem Brenner bekanntgeworden, bei dem ein Zentralheizungssystem an einen das Flammrohr unmittelbar umgebenden Ringraum angeschlossen ist, wobei dieser Ringraum an seiner Außenseite wiederum mit dem Wasserspeicher in Verbindung steht. Auch hier ist die thermische Kopplung zwischen Zentralheizungswasser und Brauchwasser zwingend.Finally, from DE-A-1 814 902 a vertical cylindrical water reservoir with a central flame tube and burner arranged at the bottom has become known, in which a central heating system is connected to an annulus immediately surrounding the flame tube, this annulus in turn being connected to the water reservoir on its outside stands. Here, too, the thermal coupling between central heating water and process water is imperative.

Somit liegt der vorliegenden Erfindung die Aufgabe zu Grunde, diese thermische Kopplung zwischen den Temperaturen des Brauchwassers und des Heizungswassers bei Heizbetrieb zu verhindern.The present invention is therefore based on the object of preventing this thermal coupling between the temperatures of the process water and the heating water during heating operation.

Zur Lösung der Aufgabe schlägt die Erfindung die aus dem kennzeichnenden Teil des Hauptanspruchs ersichtlichen Merkmale vor.To achieve the object, the invention proposes the features evident from the characterizing part of the main claim.

Weitere Ausgestaltungen und besonders vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche beziehungsweise gehen aus der nachfolgenden Beschreibung hervor, die ein Ausführungsbeispiel der Erfindung anhand der Figur der Zeichnung näher erläutert.Further refinements and particularly advantageous developments of the invention are the subject of the subclaims or emerge from the following description, which explains an exemplary embodiment of the invention with reference to the figure of the drawing.

Die Figur zeigt eine schematische Längsschnittdarstellung eines gasbeheizten Speichers.The figure shows a schematic longitudinal sectional view of a gas-heated storage.

Der gasbeheizte Speicher weist ein mit einer Isolierschicht versehenes Gehäuse 1 auf, das aus einem Zylindermantel 2, einer Bodenplatte 3 und einer mit Ausnehmungen versehenen Deckplatte 4 besteht, die allseitig dicht miteinander verbunden sind.The gas-heated storage tank has a housing 1 provided with an insulating layer, which consists of a cylinder jacket 2, a base plate 3 and a cover plate 4 provided with recesses, which are tightly connected to one another on all sides.

Das zentrale Innere des Gehäuses 1 ist von einem Flammrohr 5 gebildet, dem an seinem sich unten erweiternden Ende 6 ein Gasbrenner 7 zugeordnet ist, der über eine mit einem Brennstoffmagnetventil 8 versehene gasleitung 9 gespeist ist. Statt Gas als Energieträger könnte auch Öl oder ein fester Brennstoff in Frage kommen. Die Wand des Flammrohres bildet einen Wärmetauscher zu einem sich um den Zylindermantel des Flammrohres erstreckenden doppelten Ringraum 10, der zwei Schenkel 11 und 12 bildet, die durch ein Trennblech 13 voneinander getrennt sind und die Form eines U's mit einer unten im Brennerbereich liegenden Umlenkung 14 aufweisen. An den inneren Schenkel 11 des doppelten Ringraums ist im Bereich des Deckels 4 eine Vorlaufleitung 15 angeschlossen, in der eine von einem Motor 16 angetriebene Umwälzpumpe 17 und ein Dreiwegeumschaltventil 18 angeordnet sind, welches von einem Stellmotor 19 verstellt werden kann. Der Motor 16 beziehungsweise der Stellmotor 19 sind über eine Stelleitung 20 an eine Regel- und Steuereinrichtung 21 angeschlossen, die über eine Leitung 22 das Magnetventil zum Brenner 7 beherrscht und an die über eine Meßleitung 23 ein Temperaturfühler 24 angeschlossen ist, der im Innenraum 25 des Wasserspeichers angeordnet ist. Das Flammrohr 5 und der Doppelringraum 10 bilden konzentrisch zu einer gemeinsamen Symmetrieachse liegende Zylinder- beziehungsweise Ringzylinderräume. Um den Doppelringraum 10 erstreckt sich ein weiterer Ringraum 26, der von dem Doppelringraum 10 durch einen dritten Ringraum 27 getrennt ist. Die einzelnen Ringräume 26, 27, 11 und 12 sind durch Ringbleche 28 voneinander getrennt. Während der dritte Ringraum über eine ringförmige Ausnehmung 29 im Bereich des Deckels mit der Atmosphäre in Verbindung steht, ist der weitere Ringraum 26 über einen Rücklaufleitungsanschluß 30 - gleichfalls im Bereich des Deckels 4 vorgesehen - mit einem Anschluß des Dreiwegeventils 18 verbunden. Vom Dreiwegeventil 18 führt eine Vorlaufleitung 31 zu einem nicht weiter dargestellten Verbraucher, der aus einer Serien- und/oder Parallelschaltung einer Vielzahl von Heizkörpern bestehen kann und der rücklaufseitig an eine Rücklaufleitung 32 angeschlossen ist, deren Anschlußstutzen im Bereich des Deckels in den äußeren Schenkel 12 des Doppelringraums 10 mündet.The central interior of the housing 1 is formed by a flame tube 5, to which a gas burner 7 is assigned at its end 6 which widens below and is fed via a gas line 9 provided with a fuel solenoid valve 8. Instead of gas as an energy source, oil or a solid fuel could also be used. The wall of the flame tube forms a heat exchanger to form a double annular space 10 which extends around the cylinder jacket of the flame tube and which forms two legs 11 and 12 which are separated from one another by a separating plate 13 and have the shape of a U with a deflection 14 located at the bottom in the burner area . On the inner thigh 11 of the double annular space, a flow line 15 is connected in the area of the cover 4, in which a circulation pump 17 driven by a motor 16 and a three-way switching valve 18 are arranged, which can be adjusted by a servomotor 19. The motor 16 or the servomotor 19 are connected via a control line 20 to a regulating and control device 21, which controls the solenoid valve to the burner 7 via a line 22 and to which a temperature sensor 24 is connected via a measuring line 23, which in the interior 25 of the Water storage is arranged. The flame tube 5 and the double annulus 10 form cylinder or annular cylinder spaces lying concentrically to a common axis of symmetry. A further annular space 26 extends around the double annular space 10 and is separated from the double annular space 10 by a third annular space 27. The individual annular spaces 26, 27, 11 and 12 are separated from one another by annular plates 28. While the third annular space is connected to the atmosphere via an annular recess 29 in the area of the cover, the further annular space 26 is connected to a connection of the three-way valve 18 via a return line connection 30 - likewise provided in the area of the cover 4. From the three-way valve 18, a flow line 31 leads to a consumer, not shown, which can consist of a series and / or parallel connection of a plurality of radiators and which is connected on the return side to a return line 32, the connecting piece of which in the area of the cover in the outer leg 12 of the double annulus 10 opens.

Um den weiteren Ringraum 26 erstreckt sich der Innenraum 25 des Wasserspeichers 33, der nach innen von dem Trennblech 28 des weiteren Ringraums 16, von außen durch den Mantel 2 des Gehäuses 1 begrenzt ist.The interior 25 of the water reservoir 33 extends around the further annular space 26 and is delimited inwards by the separating plate 28 of the further annular space 16 and from the outside by the jacket 2 of the housing 1.

Im unteren Bereich 34 des Gehäuses 1 ist eine Verbindungsleitung 35 vorgesehen, die sich etwa von der tiefsten Stelle des weiteren Ringraums 26 zur Umlenkungsstelle 14 zwischen den beiden Schenkeln 11 und 12 des Doppelringraums 10 erstreckt. Sowohl die Schenkel 11 und 12 als auch die Ringräume 26 und 27 erweitern sich im unteren Bereich 34, desgleichen der Innenraum des Flammrohres 5. Diese Erweiterung geht zu Lasten des Innenraums 25 des Wasserspeichers 33, der nicht bis zum Bereich des Bodens 3 hinunterreicht, sondern im Abstand davor endet. In den Innenraum 25 mündet in dessen unteren Bereich ein Kaltwasserzulaufrohr 36, von ihm geht im obersten Bereich ein Brauchwasserzapfrohr 37 ab.In the lower region 34 of the housing 1, a connecting line 35 is provided, which extends approximately from the lowest point of the further annular space 26 to the deflection point 14 between the two legs 11 and 12 of the double annular space 10. Both the legs 11 and 12 and the annular spaces 26 and 27 expand in the lower region 34, as does the interior of the flame tube 5. This expansion is at the expense of the interior 25 of the water reservoir 33, which does not extend down to the region of the base 3, but instead ends at a distance from it. A cold water supply pipe 36 opens into the lower area of the interior 25, from which a service water tap pipe 37 branches off in the uppermost area.

Im unteren Bereich 34 kann die dem dritten Ringraum 27 zugewandte Innenseite des weiteren Ringraums 26 mit einer Isolierschicht 38 versehen sein. Der Temperaturfühler 24 ist im unteren Bereich 34 des Innenraums 25 des Wasserspeichers 33 angeordnet.In the lower region 34, the inside of the further annular space 26 facing the third annular space 27 can be provided with an insulating layer 38. The temperature sensor 24 is arranged in the lower region 34 of the interior 25 of the water reservoir 33.

Der brennstoffbeheizte Wasserspeicher hat folgende Funktion : Wenn dieser Speicher nur zur Bereitung warmen Gebrauchswassers eingesetzt wird. und der Temperaturfühler 24 fordert Wärme an, so resultieren von der Steuer- und Regeleinrichtung 21 Stellsignale zum Öffnen des Magnetventils 8, zum Anlaufen des Motors 16 der Umwälzpumpe 17, zum Verstellen des Dreiwegeventils 18 in eine solche Richtung, daß der Vorlauf 31 abgesperrt wird. Der Brenner geht in Betrieb und saugt Frischluft durch die Luftöffnung 29 und den dritten Ringraum 27 an. Das vom Brenner 7 erzeugte Abgas steigt im Flammrohr 5 auf und verlässt den Wasserspeicher über ein nicht weiter dargestelltes Abgasrohr in Fortsetzung des Flammrohres 5.The fuel-heated water storage tank has the following function: If this storage tank is only used to prepare warm service water. and the temperature sensor 24 requests heat, so result from the control and regulating device 21 control signals for opening the solenoid valve 8, for starting the motor 16 of the circulating pump 17, for adjusting the three-way valve 18 in such a direction that the flow 31 is shut off. The burner starts up and draws in fresh air through the air opening 29 and the third annular space 27. The exhaust gas generated by the burner 7 rises in the flame tube 5 and leaves the water reservoir via an exhaust pipe, not shown, in a continuation of the flame tube 5.

Die Abgase des Brenners beheizen hiermit das Flammrohr 5, von dem die Wärme auf den inneren Schenkel 11 des Doppelringraums 10 übertragen wird. Angetrieben durch die Umwälzpumpe zirkuliert hier Wasser, das von dem Dreiwegeventil über die Leitung 30 in den weiteren Ringraum 26 gelangt. Von hier strömt das Wasser über die Verbindungsleitung 35 zu Umlenkpunkt 14 des Doppelringraums 10, den es am oberen Ende des inneren Schenkels 11 verlässt und zwar durch die Vorlaufleitung 15. Es wird darauf hingewiesen, daß die Pumpe 17 auch in der Rücklaufleitung 30 angeordnet sein kann.The exhaust gases from the burner hereby heat the flame tube 5, from which the heat is transferred to the inner leg 11 of the double annulus 10. Driven by the circulation pump, water circulates here, which reaches the further annular space 26 from the three-way valve via line 30. From here, the water flows via the connecting line 35 to the deflection point 14 of the double annular space 10, which it leaves at the upper end of the inner leg 11, specifically through the supply line 15. It is pointed out that the pump 17 can also be arranged in the return line 30 .

Somit trägt das Umlaufwasser dazu bei, einerseits von den das Flammrohr durchstreichenden heißen Abgasen des Brenners Wärme aufzunehmen und zum anderen diese über das Blech 28, das den Innenraum 25 des Speicherbehälters 33 von dem Hohlzylinderraum des weiteren Ringraums trennt, abzugeben. Es findet somit eine indirekte Aufheizung des Gebrauchswassers statt, das durch Hineindrücken von frischem Kaltwasser durch den Zulaufstutzen 36 dem Warmwasserzapfstutzen 37 entnommen werden kann.The circulating water thus contributes, on the one hand, to absorb heat from the hot exhaust gases of the burner passing through the flame tube and, on the other hand, to dissipate it via the plate 28, which separates the interior 25 of the storage container 33 from the hollow cylinder space of the further annular space. There is thus an indirect heating of the service water, which can be removed from the hot water nozzle 37 by pushing in fresh cold water through the inlet connection 36.

Soll hingegen mit dem brennstoffbeheizten Wasserspeicher die Heizungsanlage betrieben werden, so wird das Dreiwegeventil 18 durch den Stellmotor 19 entsprechend umgestellt. Die Pumpe fördert dann erhitztes Vorlaufwasser aus der Leitung 15 in die Vorlaufleitung 31 zu den nicht dargestellten Heizkörpern, die von denen das Wasser über die Rücklaufleitung 32 dem äußeren Schenkel 12 des Doppelringraums 10 und zwar an dessen oberen deckelseitigen Ende wieder zugeführt wird. Dieses kühle Rücklaufwasser durchströmt beide Schenkel des Doppelringraums und verlässt den Wasserspeicher durch die Vorlaufleitung 15.If, on the other hand, the heating system is to be operated with the fuel-heated water reservoir, the three-way valve 18 is switched accordingly by the servomotor 19. The pump then conveys heated flow water from line 15 into the flow line 31 to the radiators (not shown), from which the water is returned via the return line 32 to the outer leg 12 of the double annulus 10, namely at its upper end on the cover side. This cool return water flows through both legs of the double annulus and leaves the water reservoir through the feed line 15.

Bei dieser Schaltung findet keine Aufheizung des Gebrauchswassers statt. Gegen Auskühlung ist das im Innenraum 25 des Wasserspeicherbehälters 33 gespeicherte Wasser gegenüber der kühlen Frischluft, die durch den dritten Ringraum 27 streicht, durch die Isolierung 38 weitestgehend geschützt. Es wäre möglich, die Isolierung über die gesamte Höhe des Gehäuses 1 an dem Blech 28 vorzunehmen, das den dritten Ringraum 27 außen gegenüber dem weiteren Ringraum 26 abschirmt, damit nicht bei Brauchwasseraufheizung das in den weiteren Ringraum 26 strömende Medium von der zugeführten frischen Zuluft gekühlt wird. Eine gleiche Isolierung könnte man auch außenseitig desjenigen Blechs 28 vornehmen. das den äußeren Schenkel 12 des Doppelringraums 10 begrenzt.This circuit does not heat the process water. The insulation 38 largely protects the water stored in the interior 25 of the water storage container 33 against the cool fresh air which passes through the third annular space 27. It would be possible to carry out the insulation over the entire height of the housing 1 on the sheet metal 28, which shields the third annular space 27 from the outside from the further annular space 26, so that the medium flowing into the further annular space 26 from the fresh supply air supplied does not flow during process water heating is cooled. The same insulation could also be carried out on the outside of the plate 28. that limits the outer leg 12 of the double annulus 10.

Durch den konzentrischen Aufbau der einzelnen Ringräume ist es besonders gut möglich, das Gerät abgas- und zuluftseitig über konzentrische Rohre an Schornsteine beziehungsweise Lüftungsschächte anzuschließen, hierin ein Frischluft- oder Abgasgebläse anzuordnen und auch mit einer Abgasklappe zu arbeiten.Due to the concentric structure of the individual annular spaces, it is particularly well possible to connect the device on the exhaust and supply air side via concentric pipes to chimneys or ventilation shafts, to arrange a fresh air or exhaust gas blower therein and also to work with an exhaust flap.

Statt der Ringbleche, die aus Stahl oder Aluminium gefertigt sein können, können auch Keramikrohre verwendet werden. Es ist weiterhin möglich, den Wasserspeicher um 90° gekippt arbeiten zu lassen, sodaß also die Symmetrieachse nicht senkrecht, sondern waagerecht angeordnet ist und als Brenner einen Gas- oder Ölgebläsebrenner vorzusehen.Instead of the ring plates, which can be made of steel or aluminum, ceramic tubes can also be used. It is also possible to let the water reservoir work tilted by 90 ° so that the axis of symmetry is not arranged vertically but horizontally and a gas or oil blower burner is provided as the burner.

Falls die Auskühlung über die Luftführung im dritten Ringraum zu groß ist, kann die Öffnung 29 verschlossen werden und eine neue Zuluftöffnung im Bereich des Bodendeckels 3 angeordnet werden.If the cooling via the air duct in the third annular space is too great, the opening 29 can be closed and a new supply air opening can be arranged in the area of the base cover 3.

Durch den luftführenden Ringraum 27 wird eine thermische Trennung des Brauchwassers von dem die Heizung speisenden Wasser möglich. Daraus ergibt sich der Vorteil, das Brauchwasser auf einer vom die Heizung speisenden Wasser abweichenden, insbesondere höheren Temperatur zu halten.The air-guiding annular space 27 enables thermal separation of the process water from the water supplying the heating. This has the advantage of keeping the process water at a temperature which differs from the water supplying the heating, in particular a higher temperature.

Claims (12)

1. A fuel-heated water storage apparatus comprising a water-filled annular space (33), which is disposed in a housing (1), and a fire tube (5), which extends through the centre of said annular space and is heated by exhaust gases from a burner, wherein an annular heating space (10) for water of a heating system is disposed between the fire tube (5) and the inside surface (28) of the water tank (33) and consists of a U-shaped double annular space (10), both legs (11, 12) of which are interconnected in the iower.portion (34) by a bend (14), characterized in that the double annular space (10) is separated from the water storage apparatus (33) by a third annular space (27), which serves to supply combustion air, and an additional annular space (26) constitutes an inside surface of the water storage apparatus (33).
2. A fuel-heated water storage apparatus according to claim 1, characterized in that all annular spaces are surrounded on all sides by a housing (1), which is closed and has only openings for a supply of air (29) and at the top (4) an outlet (5) for exhaust gas.
3. A fuel-heated water storage apparatus according to claim 1 or 2, characterized in that the annular spaces (11, 10, 27, 26) diverge toward the lower end (34) and insulation (38) for the water storage apparatus (33) is provided in the divergent portion.
4. A fuel-heated water storage apparatus according to any of claims 1 to 3, characterized in that a connecting line (35) leading to the bend (14) of the double annular space (10) is disposed at the lower end (34) of the additional annular space (26).
5. A fuel-heated water storage apparatus according to any of claims 1 to 4, characterized in that the walls (28) of the third annular space (27) are provided with insulation on both sides.
6. A fuel-heated water storage apparatus according to any of claims 1 to 5, characterized in that the walls (28) of the annular spaces consist of sheet steel elements or sheet aluminium elements.
7. A fuel-heated water storage apparatus according to any of claims 1 to 5, characterized in that the walls of the annular spaces consist of ceramic material.
8. A fuel-heated water storage apparatus according to any of claims 1 to 7, characterized in that an atmospheric burner is used and the axes of the annular spaces are vertical.
9. A fuel-heated water storage apparatus according to any of claims 1 to 7, characterized in that a burner supplied with air from a fan is provided and the axes of the annular spaces are horizontal.
10. A fuel-heated water storage apparatus according to any of claims 1 to 9, characterized in that the double annular space (10) at its inner annular space and its outer annular space, and also the additional annular space (26) are provided with fittings for pipes at the top of the housing (1) of the water storage apparatus.
11. The use of the fuel-heated water storage apparatus according to claim 10 in a heating system, characterized in that the pipe fitting (15) of the inner annular space of the double annular space (10) is connected via a circulating pump (17) to a three-way valve (18), which at outlet is connected by a connecting line (30) to the additional annular space (26) and at another outlet is connected via radiators of the heating system to the pipe fitting (32) for the outer annular space of the double annular space.
12. The use of the fuel-heated water storage apparatus according to any of claims 1 to 10 in an air supply and exhaust gas discharge system, characterized in that combustion air is supplied and exhaust gas is discharged through a concentric pipe line, which opens at the top (4) of the housing (1) and is connected to the interior of the fire tube (5) and to the additional annular chamber (27).
EP83902986A 1982-09-22 1983-09-17 Hot water tank heated by fuel Expired EP0118539B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83902986T ATE23628T1 (en) 1982-09-22 1983-09-17 FUEL HEATED WATER TANK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828226584U DE8226584U1 (en) 1982-09-22 1982-09-22 FUEL HEATED WATER TANK
DE8226584U 1982-09-22

Publications (2)

Publication Number Publication Date
EP0118539A1 EP0118539A1 (en) 1984-09-19
EP0118539B1 true EP0118539B1 (en) 1986-11-12

Family

ID=6743879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83902986A Expired EP0118539B1 (en) 1982-09-22 1983-09-17 Hot water tank heated by fuel

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EP (1) EP0118539B1 (en)
DE (2) DE8226584U1 (en)
WO (1) WO1984001206A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102048238B1 (en) * 2018-03-23 2019-11-25 김동호 Extreme condensing boiler

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH382203A (en) * 1961-03-08 1964-09-30 Von Roll Ag Heat exchanger
NL6516660A (en) * 1965-12-21 1967-06-22
DE1814902A1 (en) * 1968-12-16 1970-07-16 Franciscus Roffelsen Water heater
FR2442408A1 (en) * 1978-11-27 1980-06-20 Rech Produits Et Boiler for central heating system - has concentric heat exchangers between heat source and heating and hot water systems

Also Published As

Publication number Publication date
WO1984001206A1 (en) 1984-03-29
DE3367669D1 (en) 1987-01-02
EP0118539A1 (en) 1984-09-19
DE8226584U1 (en) 1982-12-23

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