EP0735331B1 - Chaudière et méthode pour régler une chaudière - Google Patents

Chaudière et méthode pour régler une chaudière Download PDF

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Publication number
EP0735331B1
EP0735331B1 EP96100862A EP96100862A EP0735331B1 EP 0735331 B1 EP0735331 B1 EP 0735331B1 EP 96100862 A EP96100862 A EP 96100862A EP 96100862 A EP96100862 A EP 96100862A EP 0735331 B1 EP0735331 B1 EP 0735331B1
Authority
EP
European Patent Office
Prior art keywords
burner
control unit
waste
exhaust gas
gas
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
EP96100862A
Other languages
German (de)
English (en)
Other versions
EP0735331A3 (fr
EP0735331A2 (fr
Inventor
Ulrich Ing. Besser
Christian Dipl.-Ing. Welte
Franz Dipl.-Ing. Schmuker
Sandra Dipl.-Ing. Cordes
Arno Dipl.-Ing. Boettcher
Manfred Dipl.-Ing. Hosch
Matthias Ing. Schmidl
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0735331A2 publication Critical patent/EP0735331A2/fr
Publication of EP0735331A3 publication Critical patent/EP0735331A3/fr
Application granted granted Critical
Publication of EP0735331B1 publication Critical patent/EP0735331B1/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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • 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
    • F24H15/219—Temperature of the water after 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
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/235—Temperature of exhaust gases
    • 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
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/0036—Dispositions against condensation of combustion products

Definitions

  • the invention is based on a control method a heater according to the type of the main claim, and from a heater to perform the procedure.
  • Heat exchangers are known from EP 0 184 612 B2 provided with a special protective layer and thus against the acid generator contained in the condensate of the exhaust gases are stable.
  • chimneys as exhaust gas routing offers the possibility of glazing fireclay inner tubes, flexible or rigid stainless steel tubes or too Insert plastic pipes so the chimneys are insensitive to exhaust gas condensate.
  • the control method according to the invention with the features of The main claim has the advantage that by avoiding Condensate in the exhaust gas routing largely on the measures can be dispensed with. Is that according to the Burner output set below the determined burner output setpoint to reach the minimum necessary exhaust gas temperature at a certain Flow temperature of the heating water, the Burner output to the previously determined burner output setpoint raised.
  • the dependence of the burner output setpoints on the Flow temperatures of the heating water and from the flue gas routing is advantageously by a in the control unit stored characteristic curve determined. This ensures that during operation of the heater at any flow temperature of the heating water according to the avoidance of Condensate required burner output setpoint as lower Limit of the burner output control range can be assigned.
  • the characteristic curve is represented by a pre-selectable potentiometer connected to the control unit is.
  • the burner output is the same as that of the preselected Characteristic curve determined burner output setpoints corrected. Because these burner output setpoints are larger than that the originally set burner output becomes the corrected burner output in an advantageous manner a shorter duty cycle and / or longer duty cycle balanced the burner. This ensures that Heater does not deliver more heating energy than corresponding the heat requirement was requested.
  • a particularly suitable heater is characterized by that in a control unit at least one Burner output setpoints in connection with the associated Flow temperature comprehensive characteristic curve is stored.
  • FIG. 1 shows the schematically shown Heater according to the invention for performing the control method according to the invention and FIG. 2 Characteristic field in a burner output / flow temperature diagram.
  • the heater according to the invention shown schematically in FIG. 1 has a burner 10.
  • a heat exchanger 16 arranged in a heating water circuit with a flow 12 and a return 14 is subjected to hot combustion gases from the burner 10.
  • Consumers can be connected to the heating water circuit, for example in the form of a heating system with room radiators, which emit the heating energy to the environment in the form of radiant heat, or systems for the supply of process water, which can be combined with the heating system, for example.
  • an exhaust gas guide 18 is arranged, which leads the exhaust gases generated during combustion to the outside environment.
  • Combustion air can be supplied to the burner 10 via a line 20 arranged coaxially to the exhaust gas duct 18 in the case of the heater operating independently of the ambient air.
  • the flow temperature of the Heating water as the central variable for the regulation of the heating objects. This is done with a control unit 22 connected temperature sensor 24 in the lead 12 of the Heating water circuit arranged.
  • the flow temperature will in this case directly depending on the Outside temperature regulated. According to the current Outside temperature is a setpoint for the control unit 22 Flow temperature to which the heating water is determined With the help of the temperature sensor 24 arranged on the flow 12 is heated. At outside temperatures of 10 ° C, for example the heater works with a low flow temperature (e.g. 35 ° C). Depending on the amount of Heat demand becomes the performance of the burner 10 preferably continuously regulated between 60% and 100%.
  • Control procedure is the minimum necessary exhaust gas temperature determined to the exhaust gas temperature in the course of the exhaust system 18 to hold above the dew point. This was done in Laboratory tests the minimum necessary exhaust gas temperature immediately at the entry of the exhaust gases into the exhaust gas guide 18 determines that no condensate in the entire exhaust system 18th originated.
  • the minimum necessary exhaust gas temperature depends on this essentially of the length and diameter of the Exhaust duct 18 and the heat transfer between Exhaust gas duct 18 and the line 20 arranged coaxially thereto for the supply of combustion air. A long Exhaust duct 18 requires a higher minimum necessary Exhaust gas temperature as a short exhaust gas duct 18.
  • Control procedure are burner output setpoints for the Reaching the minimum necessary exhaust gas temperature at different flow temperatures determined. It is known that proportional to the flow temperature of the Heating water the exhaust gas temperature rises. Because in the first Step determines the minimum necessary exhaust gas temperature it is now possible with the various Flow temperatures of the heating water burner output setpoints as the lower limit for the burner output control range define. For example, with a Flow temperature of 35 ° C a larger burner output setpoint necessary to ensure that there is no condensate in the exhaust gas duct 18 than at a flow temperature of 70 ° C.
  • a third step the set according to the heat requirement Burner output actual values with the burner output setpoints compared. Is the actual burner output value below the burner output setpoint, this is indicated by the burner output setpoint at the corresponding one Flow temperature of the heating water replaced.
  • the assignment of the burner output setpoints in connection with the associated flow temperatures of the heating water is stored as a characteristic curve in the control unit 22.
  • the Characteristic curve as shown in Fig. 2, with increasing Flow temperatures falling, i.e. there are increasing Flow temperature smaller burner output setpoints than lower limit of the burner output control range possible.
  • the heater is switched on and there is a Heat request on the control unit 22, so it will control method according to the invention activated. According to that by the control unit 22 in cooperation with the Outside temperature sensor determined setpoint for the The heater starts the flow temperature of the heating water Heat the heating water up to the setpoint.
  • the Heat demand is also the heating output or the Burner output set between 60% and 100%. Is the set burner output actual value below the Burner output setpoint, the burner output is determined by corrected or raised the characteristic in the control unit.
  • these parameters are dependent different burner output setpoints as lower Limit for the burner output control range for one condensate-free exhaust gas routing 18 necessary. That is why for different minimum necessary exhaust gas temperatures different characteristics stored in the control unit 22, the are shown in dashed lines in Fig. 2.
  • Exhaust gas guide 18 can be a function of exhaust gas guide 18 selected between the characteristics shown in FIG. 2 become.
  • Characteristic 1 is the lower adjustable characteristic in heating systems with a short exhaust system 18 and one low value for the heat transfer between the Exhaust duct 18 and line 20 for the supply of Combustion air selected, while curve 5 as the upper adjustable characteristic with a long exhaust system 18 and a high value for the heat transfer between the Exhaust duct 18 and line 20 for the supply of Combustion air is selected. Between these two Characteristic curves are corresponding fine-tuning with regard to Length of the exhaust duct 18 and the heat transfer through the Characteristic curves 2,3 and 4 possible.
  • the setting of those necessary for exhaust gas routing Characteristic curve is made by a potentiometer 26. This is connected to the control unit potentiometer 26 so Heater attached that the operator or the Installer of the heating system without any disassembly of the Heater can make the appropriate setting.
  • the heating energy supply may be greater than that originally required according to the heat requirement.
  • the higher burner output delivered correct that the heating energy supply actually corresponds to the required amount of heat will be shorter Switch-on phases and / or longer switch-off phases of the Burner 10 set by the control unit 22.
  • the Switching hysteresis in a two-point control can be how already in an earlier application with the file number P 39 07 955.4-34.
  • the application of the standard procedure is not restricted on a heater according to the embodiment, but can be used wherever with one conventional control method to an exhaust gas duct connected heater is operated.

Landscapes

  • 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)
  • Regulation And Control Of Combustion (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Control Of Combustion (AREA)

Claims (8)

  1. Procédé de régulation d'un appareil de chauffage (chaudière) brûlant notamment du gaz ou du gasoil, comportant un brûleur, une conduite d'évacuation de fumées, une arrivée et un retour d'eau chaude ainsi qu'un appareil de commande selon lequel on règle la puissance de l'appareil de chauffage en fonction de la demande de chaleur,
    caractérisé par
    les étapes de procédés suivantes :
    on détermine la température minimale des fumées à un endroit définit du système de chauffage, température qui est nécessaire pour que la température des gaz d'échappement au cours de la sortie des gaz d'échappement (18) soit au-dessus du point de rosée,
    on détermine les valeurs de consigne de la puissance du brûleur pour atteindre la température minimale nécessaire des fumées pour des températures d'avance différentes,
    on utilise les valeurs de consigne de la puissance du brûleur ainsi obtenues comme limites inférieures de la plage de régulation de la puissance du brûleur.
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'
    on enregistre les valeurs de consigne de la puissance du brûleur en liaison avec les températures correspondantes de la colonne montante comme courbes caractéristiques d'un appareil de commande (22).
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    pour des températures de fumées, minimales nécessaires, différentes, on enregistre des courbes caractéristiques différentes dans l'appareil de commande (22).
  4. Procédé selon la revendication 3,
    caractérisé en ce qu'
    on règle la courbe caractéristique nécessaire pour la conduite de fumées (18) sur l'appareil de chauffage ou l'appareil de commande (22).
  5. Procédé selon la revendication 4,
    caractérisé en ce qu'
    on établit les différentes courbes caractéristiques à l'aide d'un potentiomètre (26) relié à l'appareil de commande (22).
  6. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'
    on compense la puissance corrigée du brûleur par une durée de mise en oeuvre plus courte et/ou une durée de coupure plus longue du brûleur (10).
  7. Appareil de chauffage équipé d'un brûleur brûlant du gaz ou du gasoil, comprenant une conduite de fumées, une conduite d'avance et une conduite de retour pour de l'eau chaude sanitaire ainsi qu'un appareil de commande qui régule la puissance de l'appareil de chauffage en fonction de la demande de chauffage, pour la mise en oeuvre du procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'appareil de commande (20) contient au moins une courbe caractéristique comprenant la valeur de consigne de la puissance du brûleur en liaison avec les températures de colonne montante correspondantes.
  8. Appareil de chauffage selon la revendication 7,
    caractérisé par
    un potentiomètre relié à l'appareil de commande (22) et permettant de sélectionner des courbes caractéristiques différentes.
EP96100862A 1995-03-27 1996-01-23 Chaudière et méthode pour régler une chaudière Expired - Lifetime EP0735331B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19510475 1995-03-27
DE19510475A DE19510475A1 (de) 1995-03-27 1995-03-27 Verfahren zur Regelung eines Heizgerätes

Publications (3)

Publication Number Publication Date
EP0735331A2 EP0735331A2 (fr) 1996-10-02
EP0735331A3 EP0735331A3 (fr) 1997-05-07
EP0735331B1 true EP0735331B1 (fr) 1999-12-15

Family

ID=7757415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96100862A Expired - Lifetime EP0735331B1 (fr) 1995-03-27 1996-01-23 Chaudière et méthode pour régler une chaudière

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Country Link
EP (1) EP0735331B1 (fr)
DE (2) DE19510475A1 (fr)
ES (1) ES2141399T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19905787B4 (de) * 1999-02-12 2005-06-23 Robert Bosch Gmbh Verfahren zum Betreiben eines Heizgeräts mit einer Abgasabführung
DE102022108767B3 (de) * 2022-04-11 2023-05-25 Viessmann Climate Solutions Se Verfahren zum Ermitteln einer Zulauftemperatur, Verfahren zum Steuern eines Wärmeerzeugers, Verfahren zum Starten eines Wärmeerzeugers, Wärmeerzeuger und Steuervorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510136C2 (de) * 1985-03-18 1994-09-01 Koerting Ag Regelanordnung für Niedertemperatur-Heizkessel
AT397714B (de) * 1988-07-25 1994-06-27 Vaillant Gmbh Brennerbeheiztes gerät
GB9301337D0 (en) * 1993-01-23 1993-03-17 Greenall Jonathan L Heating assemblies having a chimney
AT401113B (de) * 1994-01-26 1996-06-25 Vaillant Gmbh Verfahren zum kondensatfreien betreiben eines umlaufwasserheizers

Also Published As

Publication number Publication date
EP0735331A3 (fr) 1997-05-07
DE59603902D1 (de) 2000-01-20
DE19510475A1 (de) 1996-10-02
ES2141399T3 (es) 2000-03-16
EP0735331A2 (fr) 1996-10-02

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