EP0640800B1 - Méthode de fonctionnement d'un chauffage à eau chaude - Google Patents

Méthode de fonctionnement d'un chauffage à eau chaude Download PDF

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Publication number
EP0640800B1
EP0640800B1 EP94113213A EP94113213A EP0640800B1 EP 0640800 B1 EP0640800 B1 EP 0640800B1 EP 94113213 A EP94113213 A EP 94113213A EP 94113213 A EP94113213 A EP 94113213A EP 0640800 B1 EP0640800 B1 EP 0640800B1
Authority
EP
European Patent Office
Prior art keywords
burner
switching hysteresis
switching
minimum value
heating
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.)
Expired - Lifetime
Application number
EP94113213A
Other languages
German (de)
English (en)
Other versions
EP0640800A1 (fr
Inventor
Hermann Köller
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.)
Elster Kromschroeder GmbH
Original Assignee
G Kromschroeder AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by G Kromschroeder AG filed Critical G Kromschroeder AG
Publication of EP0640800A1 publication Critical patent/EP0640800A1/fr
Application granted granted Critical
Publication of EP0640800B1 publication Critical patent/EP0640800B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

  • a heating controller When a central hot water heater is in operation, a heating controller preferably sets the boiler water temperature depending on the weather and / or the room temperature and accordingly switches an oil or gas burner of the boiler on and off at intervals. Since each new burner start leads to increased pollutant emissions, the aim is to extend the burner runtime per switch-on process.
  • Control procedures are therefore known in which your burner has a fixed minimum runtime, for example a time of two minutes. Since the burner is not switched off during this minimum running time, irrespective of the boiler water temperature reached, the specified setpoint is often considerably exceeded, especially when the heating load is low. Burner operation with fixed minimum runtimes can therefore trigger the safety temperature limiter, especially for boilers with low water content or with high boiler temperature setpoints.
  • the controller specifies the burner running time after a temperature-dependent switching hysteresis.
  • the switching hysteresis is high, while when the boiler water temperature is high, the switching hysteresis is low.
  • This control method therefore only takes into account the boiler temperature setpoint, but not the load on the boiler.
  • the invention has for its object to show a control method for operating a heating system, in which a minimization of the burner starts can be achieved without loss of comfort under all load conditions.
  • the invention is advantageous in that a minimum number of burner starts is achieved in the different load cases of a heating system, but mainly with a high setpoint of the flow temperature and low heat consumption. There are no major temperature fluctuations in the heated rooms. Overall, a not inconsiderable reduction in pollutants is achieved over a longer period, for example a heating period, with comparable power output.
  • the burner running time t in minutes (min) is plotted on the abscissa in the nomogram, while the switching hysteresis or the associated temperature interval ⁇ K of the boiler is recorded in Kelvin (K) on the ordinate.
  • the interdependency between the switching hysteresis and the burner running time, which is represented as a kinked straight line, is entered in the axis cross.
  • the burner receives a switching hysteresis of 20 K at start-up, ie after switching on, which is continuously reduced to about 5 K within a running time of mostly 5 min in accordance with the inclined line entered.
  • This value of the switching hysteresis is maintained during the further burner runtime, as the parallel to the abscissa shows. This guarantees a sensible and low-pollution burner operation in the vast majority of load cases.
  • both the switching hysteresis and the associated burner runtime can be changed.
  • the switching hysteresis can be set from a value of 20 K down to 5 K for a heating controller that works according to the procedure.

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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)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Control Of Combustion (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Claims (4)

  1. Méthode de fonctionnement d'un chauffage à eau chaude avec une chaudière alimentée au gaz ou au fioul dont le brûleur est commandé par un régulateur à commande à hystérésis variable, plus particulièrement avec une sortie à deux positions, caractérisée par le fait qu'au démarrage du brûleur le régulateur reçoit, indépendamment de la température de l'eau de la chaudière, une grande hystérésis (Δϑκ) qui devient continuellement plus petite avec le temps progressant de fonctionnement (t) à l'intérieur d'un intervalle prédéterminé, jusqu'à ce qu'une valeur minimale de hystérésis (Δϑκ), appropriée pour un fonctionnement permanent, soit atteinte.
  2. Méthode selon la revendication 1, caractérisée par le fait que l'intervalle de temps à partir du démarrage du brûleur jusqu'à l'obtention de la valeur minimale de l'hystérésis (Δϑκ) peut être réglé de 1 à 10 min, mais s'élevant, de préférence, à environ 5 min.
  3. Méthode selon les revendications 1 et 2, caractérisée par le fait que la valeur maximale de l'hystérésis (Δϑκ) s'élève, de préférence, à environ 20 K et la valeur minimale à environ 5 K.
  4. Méthode selon l'une des revendications 1 à 3, caractérisée par le fait que la valeur maximale de l'hystérésis (Δϑκ) est réglable et qu'elle peut être réglée, de façon constante, jusqu'à la valeur minimale.
EP94113213A 1993-08-25 1994-08-24 Méthode de fonctionnement d'un chauffage à eau chaude Expired - Lifetime EP0640800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4328558 1993-08-25
DE4328558A DE4328558A1 (de) 1993-08-25 1993-08-25 Verfahren zum Betreiben einer Warmwasserheizung

Publications (2)

Publication Number Publication Date
EP0640800A1 EP0640800A1 (fr) 1995-03-01
EP0640800B1 true EP0640800B1 (fr) 1996-12-18

Family

ID=6495973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113213A Expired - Lifetime EP0640800B1 (fr) 1993-08-25 1994-08-24 Méthode de fonctionnement d'un chauffage à eau chaude

Country Status (2)

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EP (1) EP0640800B1 (fr)
DE (2) DE4328558A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7467639B2 (en) * 2003-03-28 2008-12-23 General Electric Company Systems and methods for controlling gas flow

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549561C3 (de) * 1975-11-05 1985-03-21 Buderus Ag, 6330 Wetzlar Verfahren und Einrichtung zur Regelung der Kesselwassertemperatur in einer Heizungsanlage
DE3426937C1 (de) * 1984-07-21 1986-01-09 Danfoss A/S, Nordborg Einrichtung zum Festlegen der Ein- und Ausschaltperioden eines Brenners einer Warmwasser-Heizungsanlage
US4850310A (en) * 1986-06-30 1989-07-25 Harry Wildgen Boiler control having reduced number of boiler sequences for a given load
ATE100562T1 (de) * 1989-08-08 1994-02-15 Landis & Gyr Business Support Verfahren und vorrichtung zum regeln der temperatur eines heizkessels.
DE4119460C2 (de) * 1991-06-13 1997-07-17 Koerting Ag Regelanordnung für Niedertemperatur-Heizkessel

Also Published As

Publication number Publication date
DE59401315D1 (de) 1997-01-30
DE4328558A1 (de) 1995-03-02
EP0640800A1 (fr) 1995-03-01

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