EP1013998B1 - Regelverfahren für gasbeheizte Wassererhitzer - Google Patents
Regelverfahren für gasbeheizte Wassererhitzer Download PDFInfo
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 6
- 230000032683 aging Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Description
Claims (3)
- Regelverfahren für gasbeheizte Wassererhitzer mit elektrische Signale erzeugenden Temperatursensoren, von denen ein Flammentemperatursensor im Flammenbereich eines Gasbrenners angeordnet ist und ein Warmwassertemperatursensor eine Wassertemperatur erfasst, dadurch gekennzeichnet, dass zu festgelegten Zeitpunkten nach Stillsetzen des Gasbrenners eine Kalibrierung des Flammentemperatursensors durch Abgleichen seines erzeugten elektrischen Signals mit dem elektrischen Signal des Warmwassertemperatursensors erfolgt.
- Regelverfahren nach Anspruch 1, dadurch gekennzeichnet, dass als elektrische Signale für den Flammentemperatursensor und den Warmwassertemperatursensor jeweils Spannungssignale herangezogen werden.
- Regelverfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Wassertemperatursensor ein NTC-Widerstand in einer Vorlaufleitung des Wassererhitzers dient.
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 (de) | 2000-06-28 |
EP1013998A3 EP1013998A3 (de) | 2001-04-25 |
EP1013998B1 true EP1013998B1 (de) | 2003-06-25 |
Family
ID=7891936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99115367A Expired - Lifetime EP1013998B1 (de) | 1998-12-21 | 1999-08-04 | Regelverfahren für gasbeheizte Wassererhitzer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1013998B1 (de) |
DE (2) | DE19858994A1 (de) |
Families Citing this family (1)
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)
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 |
-
1998
- 1998-12-21 DE DE19858994A patent/DE19858994A1/de not_active Withdrawn
-
1999
- 1999-08-04 DE DE59906085T patent/DE59906085D1/de not_active Expired - Fee Related
- 1999-08-04 EP EP99115367A patent/EP1013998B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59906085D1 (de) | 2003-07-31 |
EP1013998A2 (de) | 2000-06-28 |
EP1013998A3 (de) | 2001-04-25 |
DE19858994A1 (de) | 2000-06-29 |
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