EP3561386A1 - Method for detecting a storm and for avoiding storm-induced deactivations in networked heating systems - Google Patents

Method for detecting a storm and for avoiding storm-induced deactivations in networked heating systems Download PDF

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Publication number
EP3561386A1
EP3561386A1 EP19169727.5A EP19169727A EP3561386A1 EP 3561386 A1 EP3561386 A1 EP 3561386A1 EP 19169727 A EP19169727 A EP 19169727A EP 3561386 A1 EP3561386 A1 EP 3561386A1
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EP
European Patent Office
Prior art keywords
heating systems
information
network
fuel
storm
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Granted
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EP19169727.5A
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German (de)
French (fr)
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EP3561386B1 (en
Inventor
Jochen Wriske
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Vaillant GmbH
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Vaillant GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • 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
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/04—Controlling at two or more different localities

Definitions

  • the invention relates to a method for detecting storm and averting storm-related device shutdowns in networked heating systems.
  • Gas condensing boilers are usually equipped with a high modulation capability. This means that the fuel gas-air quantity conveyed into the combustion chamber can be adapted to the current heat requirement over a wide range by means of the blower and a gas fitting connected thereto, without causing cycles of the heat generator.
  • the pressure difference in the air-exhaust system generated by the fan is usually comparable to pressure fluctuations that act due to gusts in the fresh air intake or the exhaust outlet. The result of this is that sudden gusts of wind cause the flame to be torn off the burner or to allow it to blow back through the burner under unfavorable conditions, thereby adversely affecting the thermal comfort, operational safety and noise of the heaters.
  • the invention has for its object, even in storm trouble-free operation of fuel-fired heating systems, which have a large modulation range to allow.
  • This object is achieved according to the invention with a method for operating modulating, fuel-operated heating systems with a network connection in a network.
  • Central data collection in the network collects relevant information. On the one hand, this can be a storm warning from a weather service.
  • individual heating systems may send initial information to the central data acquisition system upon extinction without prior shutdown of the fuel supply.
  • the central data collection in the network registers these. If these fault messages accumulate within a certain period of time or if weather information is available, a second information is sent from the network to a large number of heating systems in the network. This second information causes heaters in the network to restrict the modulation range by increasing the minimum load.
  • the optional first information is sent only if the load of the corresponding heating systems falls below a certain partial load value when extinguished.
  • the first information includes the time of extinction and the operating location of the heating system.
  • the second information includes a region indication.
  • the central data collection in the network outputs a third information, which leads to the cancellation of the modulation limit in the heating systems.
  • a variety of modulating, fuel-powered heating systems are connected via the Internet in a network.
  • the fuel may be solid, liquid or gaseous.
  • Combustion air from the environment is needed for combustion.
  • the combustion air is obtained by a fresh air line from the environment.
  • a first individual heating system has a modulation range of 5 to 25 kW. At a load of 7 kW ruptures due to wind into the fresh air line, the flame, so that at an ionization, which monitors the presence of a flame, the ionisation tears off. Since the load is less than an individual, predetermined limit load of 10 kW, sends the control of this individual heating system coded information "flame separation at low load" in conjunction with the time and place of installation of the individual heating system via the Internet to a central server. On the server, it is detected whether in a limited spatial environment within a certain time unit, a predetermined number of flame drops occurred at low load. If this is the case, a variable for the indication of wind / storm load is set to logical "1".
  • the wind / storm load indication variable changes to logic "1"
  • a control signal is sent to all the heating devices connected to the server environment. All heating systems positioned in the respective surrounding area raise their minimum fan speeds to such an extent that the combustion of these units is stable even under gusts of wind.
  • the spatial environment can comprise defined districts or also individually define a district according to the locations of the present disturbances. In a second individual heating system, the modulation range is limited from 10 to 40 kW to 20 to 40 kW. If it still comes to flames, a corresponding information from the server is sent, which again raises the minimum load. This adaptation can take place several times, until finally the plants are operated only with maximum load. After a defined time, the indication of wind / storm load is reset to logical "0".
  • weather information can be integrated into the network.
  • the modulation ranges of the heating systems present in the relevant area can be adapted even before the occurrence of the first concrete fault. It is also possible to adjust the modulation range depending on the intensity of the expected storm. The same applies to the cancellation. On the one hand, this can take place successively and, on the other hand, according to forecasted or real times.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

Ein Verfahren zum Betreiben von modulierenden, brennstoffbetriebenen Heizungsanlagen mit einer Netzwerkverbindung sieht vor, bei Bedarf die Maximalleistung eines Modulationsbereichs anzuheben Einzelne Heizungsanlagen senden bei einem Erlöschen ohne vorheriger Abschaltung der Brennstoffzufuhr eine erste Information an eine zentrale Datenerfassung im Netzwerk. Liegen mehrere Störungen in einem bestimmten Gebiet binnen eines bestimmten Zeitraums vor, so wird die Minimallast der Heizungsanigen in diesem Gebiet erhöht. Eine entsprechende Information kann auch von einem Wetterdienst stammen.A method of operating modulating, fuel-powered heating systems with a network connection provides for increasing the maximum power of a modulation range when needed. Individual extinguishing systems, when extinguished without prior shut-off of the fuel supply, send first information to a centralized data collector in the network. If there are several faults in a certain area within a certain period of time, the minimum load of the heaters in this area will be increased. Such information can also come from a weather service.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Erkennung von Sturm und zur Abwendung sturmbedingter Geräteabschaltungen bei vernetzten Heizungsanlagen.The invention relates to a method for detecting storm and averting storm-related device shutdowns in networked heating systems.

Gas-Brennwertgeräte werden üblicherweise mit einer hohen Modulationsfähigkeit ausgestattet. Dies bedeutet, dass die in den Brennraum geförderte Brenngas-Luft Menge mittels des Gebläses und eine damit verbundene Gasarmatur über einen weiten Bereich dem aktuellen Wärmebedarf angepasst werden kann, ohne dass es zu Takten des Wärmeerzeugers käme. Je geringer die Drehzahl des Gebläses dabei wird, desto empfindlicher reagiert das strömende Brenngas-Luft-Gemisch insbesondere an der Flammfront auf Störungen im Massenstrom oder Brenngas-Luft-Verhältnis. Bei Betrieb des Heizsystems in Kleinstlast ist die durch das Gebläse erzeugte Druckdifferenz im Luft-Abgassystem in der Regel vergleichbar mit Druckschwankungen, die aufgrund von Windböen in die Frischluftansaugung oder den Abgasauslass einwirken. Dies hat zur Folge, dass plötzlich auftretende Windböen die Flamme am Brenner abreißen lassen oder sie bei ungünstigen Bedingungen durch den Brenner hindurch zurückschlagen lassen, wodurch der Wärmekomfort, die Betriebssicherheit und die Geräuschentwicklung der Heizgeräte negativ beeinflusst werden.Gas condensing boilers are usually equipped with a high modulation capability. This means that the fuel gas-air quantity conveyed into the combustion chamber can be adapted to the current heat requirement over a wide range by means of the blower and a gas fitting connected thereto, without causing cycles of the heat generator. The lower the speed of the fan is, the more sensitive the flowing fuel gas-air mixture, in particular at the flame front to disturbances in the mass flow or fuel gas to air ratio. When operating the heating system in micro-load, the pressure difference in the air-exhaust system generated by the fan is usually comparable to pressure fluctuations that act due to gusts in the fresh air intake or the exhaust outlet. The result of this is that sudden gusts of wind cause the flame to be torn off the burner or to allow it to blow back through the burner under unfavorable conditions, thereby adversely affecting the thermal comfort, operational safety and noise of the heaters.

Der Erfindung liegt die Aufgabe zugrunde, auch bei Sturm einen störungsfreien Betrieb von brennstoffbetriebenen Heizungslagen, welche über einen großen Modulationsbereich verfügen, zu ermöglichen.The invention has for its object, even in storm trouble-free operation of fuel-fired heating systems, which have a large modulation range to allow.

Diese Aufgabe wird erfindungsgemäß mit einem Verfahren zum Betreiben von modulierenden, brennstoffbetriebenen Heizungsanlagen mit einer Netzwerkverbindung in einem Netzwerk gelöst. Eine zentrale Datenerfassung im Netzwerk sammelt hierbei entsprechende Informationen. Dies kann einerseits eine Sturmwarnung eines Wetterdiensts sein. Alternativ können einzelne Heizungsanlagen bei einem Erlöschen ohne vorheriger Abschaltung der Brennstoffzufuhr eine erste Information an die zentrale Datenerfassung senden. Die zentrale Datenerfassung im Netzwerk registriert diese. Häufen sich in einem gewissen Zeitraum diese Störmeldungen oder liegt eine entsprechende Wetterinformation vor, so wird aus dem Netzwerk eine zweite Information an eine Vielzahl von Heizungsanlagen im Netzwerk verschickt. Diese zweite Information veranlasst Heizungsanlagen im Netzwerk den Modulationsbereich einzuschränken, indem die minimale Belastung angehoben wird.This object is achieved according to the invention with a method for operating modulating, fuel-operated heating systems with a network connection in a network. Central data collection in the network collects relevant information. On the one hand, this can be a storm warning from a weather service. Alternatively, individual heating systems may send initial information to the central data acquisition system upon extinction without prior shutdown of the fuel supply. The central data collection in the network registers these. If these fault messages accumulate within a certain period of time or if weather information is available, a second information is sent from the network to a large number of heating systems in the network. This second information causes heaters in the network to restrict the modulation range by increasing the minimum load.

Vorteilhafte Ausgestaltungen ergeben sich aus den Merkmalen der abhängigen Ansprüche.Advantageous embodiments result from the features of the dependent claims.

So wird die optional erste Information nur dann versendet, wenn die Belastung der entsprechenden Heizungsanlagen beim Erlöschen einen bestimmten Teillastwert unterschreitet So enthält die erste Information den Zeitpunkt des Erlöschens und den Betriebsort der Heizungsanlage. Die zweite Information beinhaltet eine Gebietsangabe. Beim Vorliegen einer Wetterinformation zum Ende einer Sturmphase oder nach einer vorgegebenen Zeit gibt die zentrale Datenerfassung im Netzwerk eine dritte Information aus, was bei den Heizungsanlagen zum Aufheben der Modulationsbegrenzung führt.Thus, the optional first information is sent only if the load of the corresponding heating systems falls below a certain partial load value when extinguished. Thus, the first information includes the time of extinction and the operating location of the heating system. The second information includes a region indication. In the presence of weather information at the end of a storm or after a predetermined time, the central data collection in the network outputs a third information, which leads to the cancellation of the modulation limit in the heating systems.

Die Erfindung wird anhand zweier Beispiele näher erläutert.The invention will be explained in more detail with reference to two examples.

Eine Vielzahl modulierenden, brennstoffbetriebenen Heizungsanlagen sind über das Internet in einem Netzwerk verbunden. Der Brennstoff kann hierbei fest, flüssig oder gasförmig sein. Für die Verbrennung wird Verbrennungsluft aus der Umgebung benötigt. Die Verbrennungsluft wird durch eine Frischluftleitung aus der Umgebung bezogen.A variety of modulating, fuel-powered heating systems are connected via the Internet in a network. The fuel may be solid, liquid or gaseous. Combustion air from the environment is needed for combustion. The combustion air is obtained by a fresh air line from the environment.

Eine erste individuelle Heizungsanlage verfügt über einen Modulationsbereich von 5 bis 25 kW. Bei einer Belastung von 7 kW reißt aufgrund von Windeinfall in die Frischluftleitung die Flamme ab, so dass an einer lonisationselektrode, welche das Vorhandensein eine Flamme überwacht, die lonisationsspannung abreißt. Da die Belastung geringer als eine individuelle, vorgegebene Grenzbelastung von 10 kW ist, sendet die Regelung dieser individuellen Heizungsanlage eine kodierte Information "Flammabriss bei Kleinstlast" in Verbindung mit der Uhrzeit und dem Aufstellort der individuellen Heizungsanlage über das Internet an einen zentralen Server. Auf dem Server wird erfasst, ob in einem begrenzten räumlichen Umfeld innerhalb einer bestimmten Zeiteinheit eine vorgegebene Anzahl von Flammenabrissen bei Kleinlast aufgetreten ist. Ist dies der Fall, so wird eine Variable zur Indikation von Wind-/ Sturmbelastung auf logisch "1" gesetzt. Sofern die Variable zur Indikation von Wind-/ Sturmbelastung auf logisch "1" umschaltet, wird ein Steuersignal an alle an die Serverumgebung angeschlossenen Heizungsgeräte geschickt. Alle im entsprechenden räumlichen Umfeld positionierten Heizungsanlagen heben ihre minimalen Gebläsedrehzahlen soweit an, dass die Verbrennung dieser Geräte auch unter Windböen stabil läuft. Das räumliche Umfeld kann definierte Bezirke umfassen oder auch individuell einen Bezirk gemäß den Orten der vorliegenden Störungen definieren. Bei einer zweiten individuellen Heizungsanlage wird der Modulationsbereich von 10 bis 40 kW auf 20 bis 40 kW eingeschränkt. Kommt es nun immer noch zu Flammenabrissen, wird eine entsprechende Information vom Server versandt, welcher abermals die Minimallast anhebt. Diese Anpassung kann mehrmals stattfinden, bis letztendlich die Anlagen nur noch mit Maximallast betrieben werden. Nach einer definierten Zeit wird Indikation von Wind-/ Sturmbelastung auf logisch "0" zurückgesetzt.A first individual heating system has a modulation range of 5 to 25 kW. At a load of 7 kW ruptures due to wind into the fresh air line, the flame, so that at an ionization, which monitors the presence of a flame, the ionisation tears off. Since the load is less than an individual, predetermined limit load of 10 kW, sends the control of this individual heating system coded information "flame separation at low load" in conjunction with the time and place of installation of the individual heating system via the Internet to a central server. On the server, it is detected whether in a limited spatial environment within a certain time unit, a predetermined number of flame drops occurred at low load. If this is the case, a variable for the indication of wind / storm load is set to logical "1". If the wind / storm load indication variable changes to logic "1", a control signal is sent to all the heating devices connected to the server environment. All heating systems positioned in the respective surrounding area raise their minimum fan speeds to such an extent that the combustion of these units is stable even under gusts of wind. The spatial environment can comprise defined districts or also individually define a district according to the locations of the present disturbances. In a second individual heating system, the modulation range is limited from 10 to 40 kW to 20 to 40 kW. If it still comes to flames, a corresponding information from the server is sent, which again raises the minimum load. This adaptation can take place several times, until finally the plants are operated only with maximum load. After a defined time, the indication of wind / storm load is reset to logical "0".

Alternativ oder ergänzend können in das Netzwerk Wetterinformationen eingebunden werden. Anhand derer können schon vor dem Auftreten der ersten konkreten Störung die Modulationsbereiche der im betreffenden Gebiet vorhandenen Heizungsanlagen angepasst werden. Hierbei ist es auch möglich, je nach Intensität des zu erwartenden Sturms den Modulationsbereich anzupassen. Gleiches gilt für die Aufhebung. Diese kann einerseits sukzessive erfolgen und andererseits nach prognostizierten oder real ermittelten Zeiten.Alternatively or additionally, weather information can be integrated into the network. On the basis of these, the modulation ranges of the heating systems present in the relevant area can be adapted even before the occurrence of the first concrete fault. It is also possible to adjust the modulation range depending on the intensity of the expected storm. The same applies to the cancellation. On the one hand, this can take place successively and, on the other hand, according to forecasted or real times.

Claims (5)

Verfahren zum Betreiben von modulierenden, brennstoffbetriebenen Heizungsanlagen mit einer Netzwerkverbindung, dadurch gekennzeichnet, dass ein Wetterdienst oder einzelne Heizungsanlagen bei einem Erlöschen ohne vorheriger Abschaltung der Brennstoffzufuhr eine erste Information an eine zentrale Datenerfassung im Netzwerk senden,
die zentrale Datenerfassung im Netzwerk beim Vorliegen einer entsprechenden Wetterinformation oder mehrerer Informationen zum Erlöschen mehrerer Heizungsanlagen ohne vorheriger Abschaltung der Brennstoffzufuhr eine zweite Information an eine Vielzahl von Heizungsanlagen im Netzwerk verschickt und Heizungsanlagen im Netzwerk nach Erhalt dieser zweiten Information den Modulationsbereich einschränken, indem die minimale Belastung angehoben wird.Method for operating modulating, fuel-operated heating systems with a network connection, characterized in that a weather service or individual heating systems send a first information to a central data acquisition in the network when extinguished without prior shutdown of the fuel supply,
the central data collection in the network in the presence of appropriate weather information or more information to extinguish several heating systems without prior shutdown of the fuel supply sends a second information to a variety of heating systems in the network and restrict heating systems in the network after receiving this second information the modulation range by the minimum load is raised. Verfahren zum Betreiben von modulierenden, brennstoffbetriebenen Heizungsanlagen mit einer Netzwerkverbindung nach Anspruch 1, dadurch gekennzeichnet, dass die erste Information nur dann versendet wird, wenn die Belastung der entsprechenden Heizungsanlagen beim Erlöschen einen bestimmten Teillastwert unterschreitet.Method for operating modulating, fuel-operated heating systems with a network connection according to claim 1, characterized in that the first information is sent only if the load of the corresponding heating systems when extinguishing below a certain partial load. Verfahren zum Betreiben von modulierenden, brennstoffbetriebenen Heizungsanlagen mit einer Netzwerkverbindung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die erste Information den Zeitpunkt des Erlöschens und den Betriebsort der Heizungsanlage enthält.Method for operating modulating, fuel-operated heating systems with a network connection according to claim 1 or 2, characterized in that the first information contains the time of extinction and the place of operation of the heating system. Verfahren zum Betreiben von modulierenden, brennstoffbetriebenen Heizungsanlagen mit einer Netzwerkverbindung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die zweite Information eine Gebietsangabe enthält.Method for operating modulating, fuel-operated heating systems with a network connection according to one of claims 1 to 3, characterized in that the second information includes a region indication . Verfahren zum Betreiben von modulierenden, brennstoffbetriebenen Heizungsanlagen mit einer Netzwerkverbindung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die zentrale Datenerfassung im Netzwerk beim Vorliegen einer anderen entsprechenden Wetterinformation oder nach einer vorgegebenen Zeit eine dritte Information zum Aufhaben der Modulationsbegrenzung ausgibt.A method of operating modulating, fuel-powered heating systems with a network connection according to one of claims 1 to 4, characterized in that the central data acquisition outputs in the network in the presence of another corresponding weather information or after a predetermined time, a third information for aborting the modulation limit.
EP19169727.5A 2018-04-23 2019-04-17 Method for detecting a storm and for avoiding storm-induced deactivations in networked heating systems Active EP3561386B1 (en)

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DE102018109665.8A DE102018109665A1 (en) 2018-04-23 2018-04-23 Method for detecting storms and averting storm-related device shutdowns in networked heating systems

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EP3561386A1 true EP3561386A1 (en) 2019-10-30
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Citations (3)

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Publication number Priority date Publication date Assignee Title
DE102005032621A1 (en) * 2004-07-19 2006-02-09 Vaillant Gmbh Device e.g. heating device, controlling method, involves correcting received weather forecast data based on difference of comparison between determined data and past data for adjusting operation of device to weather that is expected
EP1777465A2 (en) * 2005-10-18 2007-04-25 DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. Method for the determination of the heating requirement of a building
DE102010031830A1 (en) * 2010-07-20 2012-01-26 Hans-Georg Fleischmann Adaptive disturbance variable sensor and adaptive control system for a weather-compensated domestic engineering control and method for operating this

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
US20150153056A1 (en) * 2012-06-07 2015-06-04 Intellinox Inc. Methods for operating heating, ventilation and air conditioning systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005032621A1 (en) * 2004-07-19 2006-02-09 Vaillant Gmbh Device e.g. heating device, controlling method, involves correcting received weather forecast data based on difference of comparison between determined data and past data for adjusting operation of device to weather that is expected
EP1777465A2 (en) * 2005-10-18 2007-04-25 DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. Method for the determination of the heating requirement of a building
DE102010031830A1 (en) * 2010-07-20 2012-01-26 Hans-Georg Fleischmann Adaptive disturbance variable sensor and adaptive control system for a weather-compensated domestic engineering control and method for operating this

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