EP1013998B1 - Procédé de commande pour chauffe-eau à gaz - Google Patents

Procédé de commande pour chauffe-eau à gaz Download PDF

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Publication number
EP1013998B1
EP1013998B1 EP99115367A EP99115367A EP1013998B1 EP 1013998 B1 EP1013998 B1 EP 1013998B1 EP 99115367 A EP99115367 A EP 99115367A EP 99115367 A EP99115367 A EP 99115367A EP 1013998 B1 EP1013998 B1 EP 1013998B1
Authority
EP
European Patent Office
Prior art keywords
temperature sensor
flame
water temperature
water
control method
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
EP99115367A
Other languages
German (de)
English (en)
Other versions
EP1013998A2 (fr
EP1013998A3 (fr
Inventor
Marcus Bienzle
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 EP1013998A2 publication Critical patent/EP1013998A2/fr
Publication of EP1013998A3 publication Critical patent/EP1013998A3/fr
Application granted granted Critical
Publication of EP1013998B1 publication Critical patent/EP1013998B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/18—Measuring temperature feedwater temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/14—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermo-sensitive resistors
    • 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

Definitions

  • the invention is based on a control method for gas-heated water heater according to the genus of Main claim.
  • a temperature sensor e.g. a thermocouple or a sensor that detects the flame base temperature or position is exposed to and exposed to temperatures of up to 800 ° C hence natural aging. His drifts external electrical signal, which makes the Control behavior can be influenced after a long period of operation can.
  • the control method according to the invention with the features of Claim 1 excludes these adverse consequences of natural aging of the thermally highly stressed Flame temperature sensor largely out.
  • the goes Invention based on the knowledge that the electrical Signal of a water temperature sensor because of its low thermal stress remains stable and therefore as Reference can serve.
  • the between the set Intervals, e.g. Days or weeks, are dimensioned so that the aging drift occurring in them of the flame temperature sensor can be neglected.
  • the times of adjustment or calibration and the electronic corrective actions can easily be done in the Software of the control device can be stored so that additional measures for this are unnecessary.
  • An NTC sensor can preferably be used as the water temperature sensor serve in a flow line of the water heater, the electrical signal is particularly resistant to aging.
  • the Measures according to the invention are in particular at Control devices with a thermocouple in the Flame range advantageous, the signal of one Aging drift is subject.
  • FIG. 1 shows the course a of the Voltage signal v of a new thermocouple and Course b of the voltage signal v of an aged Thermocouple, depending on the thermal load T.
  • Figure 2 the drift of the Voltage signal v at a certain constant Temperature plotted against time t.
  • Figure 1 shows that an aged thermocouple in a certain temperature a higher voltage signal than a dispenses new thermocouple and that the Temperature difference c between the two voltage signals a and b with increasing thermal load increased.
  • the individual time intervals t i are plotted in FIG. 2, after which the voltage signal v of the thermocouple is compared with the voltage signal v of the water temperature sensor, which is preferably designed as an NTC resistor.
  • the time intervals t i are dimensioned such that the deviations dv of the voltage signal occurring therein can be neglected in the respective control concept.
  • the gas burner is temporarily stopped and, after the temperature has been equalized in the device, the voltage signal of the flame temperature sensor or thermocouple is adjusted to the voltage signal of the water temperature sensor serving as a reference or the difference between the two voltage signals according to a relationship stored in the software.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)

Claims (3)

  1. Procédé de régulation d'un chauffe-eau à gaz comportant des capteurs de température générant des signaux électriques, dont un capteur de température de flammes est monté dans la zone de la flamme d'un brûleur à gaz et un capteur de température d'eau chaude détecte la température de l'eau,
    caractérisé en ce qu'
    à des instants fixes après l'arrêt du brûleur à gaz, on effectue un calibrage du capteur de température de flammes en équilibrant le signal électrique qu'il génère avec le signal électrique du capteur de température d'eau chaude.
  2. Procédé de régulation selon la revendication 1,
    caractérisé en ce que
    les signaux électriques du capteur de température de flammes et du capteur de température d'eau chaude sont des signaux de tension.
  3. Procédé de régulation selon la revendication 1,
    caractérisé en ce que
    le capteur de température d'eau est une résistance NTC installée dans une conduite de départ du chauffe-eau.
EP99115367A 1998-12-21 1999-08-04 Procédé de commande pour chauffe-eau à gaz Expired - Lifetime EP1013998B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19858994A DE19858994A1 (de) 1998-12-21 1998-12-21 Regelverfahren für gasbeheizte Wassererhitzer
DE19858994 1998-12-21

Publications (3)

Publication Number Publication Date
EP1013998A2 EP1013998A2 (fr) 2000-06-28
EP1013998A3 EP1013998A3 (fr) 2001-04-25
EP1013998B1 true EP1013998B1 (fr) 2003-06-25

Family

ID=7891936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99115367A Expired - Lifetime EP1013998B1 (fr) 1998-12-21 1999-08-04 Procédé de commande pour chauffe-eau à gaz

Country Status (2)

Country Link
EP (1) EP1013998B1 (fr)
DE (2) DE19858994A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022112173A1 (de) * 2022-05-16 2023-11-16 Vaillant Gmbh Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät, Heizgerät und Verwendung eines ermittelten elektrischen Widerstandes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470371B1 (fr) * 1979-11-23 1985-09-13 Neotronics Ltd Appareil de mesure de l'efficacite d'installation de combustion
JPS62252826A (ja) * 1986-04-23 1987-11-04 Rinnai Corp 燃焼装置

Also Published As

Publication number Publication date
DE59906085D1 (de) 2003-07-31
EP1013998A2 (fr) 2000-06-28
EP1013998A3 (fr) 2001-04-25
DE19858994A1 (de) 2000-06-29

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