EP1650502A2 - Procédé et dispositif pour le calibrage d'un appareil de chauffage - Google Patents

Procédé et dispositif pour le calibrage d'un appareil de chauffage Download PDF

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Publication number
EP1650502A2
EP1650502A2 EP05020863A EP05020863A EP1650502A2 EP 1650502 A2 EP1650502 A2 EP 1650502A2 EP 05020863 A EP05020863 A EP 05020863A EP 05020863 A EP05020863 A EP 05020863A EP 1650502 A2 EP1650502 A2 EP 1650502A2
Authority
EP
European Patent Office
Prior art keywords
drive signal
gas
control unit
operating point
burner flame
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.)
Withdrawn
Application number
EP05020863A
Other languages
German (de)
English (en)
Other versions
EP1650502A3 (fr
Inventor
Uwe Dipl.-Ing. Deptolla
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 EP1650502A2 publication Critical patent/EP1650502A2/fr
Publication of EP1650502A3 publication Critical patent/EP1650502A3/fr
Withdrawn legal-status Critical Current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
    • F23N1/002—Regulating fuel supply using electronic means
    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/04—Memory
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/06—Sampling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/48—Learning / Adaptive control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/20—Calibrating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/20—Warning devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves

Definitions

  • the invention relates to a method and a device for calibrating a modulating GasMapwertös using a gas supply controllably modulating and shut-off gas valve.
  • gas fittings are often used, which allow not only a shut-off and release function but also a modulation of the gas outlet pressure. This modulation is regulated as a function of the heat requirement via a control unit controlling the gas fitting.
  • a control signal predetermined by the control unit is associated with a position of the gas fitting and a gas outlet pressure according to a control characteristic.
  • the object of the invention is therefore to enable a calibration of a calorific value device in a reliable, simple and cost-effective manner.
  • the inventive method of the type mentioned above is characterized in that, starting from an operating point of GasMapwertologis a drive signal of the gas valve is changed so far that an associated burner flame goes out, the extinction of the burner flame is monitored. When the burner flame goes out, the drive signal is detected, and at least one limit value (A 1 ) of the drive signal for the modulation range of the gas fired heating appliance is determined from the detected drive signal.
  • the method according to the invention uses a reproducibly determinable reference point, which is determined individually during the execution of the method on the respective system is detected.
  • This reference point is reached in such a control of the gas valve by the control unit, in which a burner flame of the calorific value device goes out.
  • the valve assumes a position in which a defined gas outlet pressure can be assumed, since the gas outlet pressure P out at which the burner flame extinguishes is known.
  • the control signal A present at this point from the control unit is also known, a reference point of the control characteristic characteristic of the gas heating appliance can be determined. From this defined reference point, the allowed modulation range of the calorific value device between the points of minimum and maximum heating power is determined for the first time or repeatedly.
  • a known relationship between the position of the specific reference point or point of the control characteristic and a default setting of the valve is utilized. It is only necessary that such a relationship for a calorifier series or a calorific value unit is individually determined and retrievable.
  • a simple functional (eg linear) relationship between the drive signal and a change in position of the valve or the gas outlet pressure is individually determined and retrievable.
  • a drive signal can be calculated which corresponds to the position of the valve at a limit value of the modulation range.
  • the functional relationship often consists in a simple addition of a drive signal change ⁇ A 1 ', but more complex functional relationships can also be taken into account in order to determine a limit value.
  • the calibration of the valve or the coordination of the control unit with the valve can be done automatically and without manual intervention.
  • the maximum and minimum output pressures are not adjusted by mechanical adjustment, for example by adjusting screws, but by starting a device-specific reference point and its connection to a known gas outlet pressure of the valve and control signals of the control unit.
  • the calibration thus takes place in the control unit and its associated Means and is no longer made on the insulated fitting.
  • This also has the advantage over the mechanical specification of the limit values that the corresponding calibration method can be repeated and executed without intervention, for example to periodically check the proper calibration of the device.
  • a limit value (A min ) for minimum heating power in the modulation mode which is used in replacement of the preset minimum heating power limit, is determined as the limit value.
  • the corresponding limit value of minimum heating power is important in operation of the gas heater, since it must be ensured that there is no condensation of the exhaust gas due to a too low burner temperature, which in turn is caused by a set too low gas outlet pressure. On the other hand, it must also be ensured during the calibration that the gas outlet pressure at A min does not lead to an unnecessarily high heat output and thus to a restriction of the modulation range.
  • a limit value (A max ) for maximum heating powers in the modulation mode is determined as the second limit value.
  • the determination of A min and A max specifies a control interval in which the control unit can modulate the gas outlet pressure during operation of the gas fired heating appliance. By automatically limiting the maximum gas outlet pressure and the associated control signal overheating of the gas heater can be avoided. On the other hand, it should also be ensured via the calibration that the regularly permitted operating range of the gas fired heating appliance is completely exhausted at the operating point of maximum heat output.
  • the drive signal of the gas fitting is changed according to a ramp function. Starting from an operating point of the gas fired boiler, the drive signal is changed at a constant rate of change in accordance with a ramp function until the burner flame extinction is detected.
  • the steepness of the ramp may be selected depending on the fitting used. A steeper ramp allows faster calibration, but at the expense of accuracy.
  • a new calibration cycle is triggered in each case as a function of predetermined time sequences and / or monitored states of the gas fired heating appliance.
  • a time control associated with the gas fired boiler ensures that the gas heater is calibrated regularly and therefore is always in an optimally calibrated condition.
  • the method may be triggered in response to other monitored conditions of the gas fired boiler, for example, when a temperature monitor detects overheating of the gas heater, or when the gas heater has lost power.
  • At least one desired value (S min ) of the drive signal is predetermined and compared with an actual value of the drive signal and that at least one further calibration cycle is initiated when a predetermined drive signal deviation is exceeded.
  • a desired value of the drive signal which is stored, for example, in a memory device associated with the control unit of the gas fired heating appliance, predefines the value of the drive signal which is to be applied when the burner flame goes out. If, during a calibration, the control signal value deviates significantly, that is to say by more than one permitted control deviation, from the stored value of the control signal, there may be a fault in the gas heating appliance. It is possible, for example, that the valve reacts differently to a drive with a given drive signal than intended. In this case, it is advantageous that a new calibration cycle is first initiated in order to rule out a one-time disturbance in the course of the calibration process.
  • a fault message or fault display is generated. If a deviation of the control signal from a desired value is determined even after the calibration procedure has been carried out repeatedly, a fault is likely to be present of the gas heater. In this case, provision is made for the gas heating appliance to be switched off or to operate in a mode with reduced heating power, or for the gas heating appliance to continue to operate unaltered and for a fault indication to be displayed, for example, by display means on the appliance or by communication means on a remote display.
  • FIG. 1 shows schematically and partly as a block diagram a modulating gas heating appliance which can be calibrated by means of the method according to the invention.
  • the GasMapuß has a gas supply line 1 and a gas supply controllably modulating and shut-off gas fitting 2.
  • a gas supply controllably modulating and shut-off gas fitting 2 In the block of the gas valve 2, two valves are shown, one of which is a controllable shut-off valve 21 and the other is a modulation valve 22. From the valves 21 and 22, the gas supply to a heat generating system 3 associated burner 30 is controlled.
  • a control unit 4 controls in normal modulating operation by control signal via the control line 5, the gas valve 2 and the modulation valve 22 in response to a known means certain heat demand, which is symbolized here simply by a control line 6.
  • the heat generating system is supplied in a known manner cold service water, which is heated in the heat generating system of the embodiment.
  • the burner flame 31 is monitored by a suitable sensor arrangement 7.
  • the sensor arrangement may for example consist of capacitive sensors which respond to ions generated by the burner flame 31.
  • the sensor assembly 7 is connected to the control unit 4 via a signal line 8 and provides a signal change upon extinction of the burner flame 31.
  • the sensors provided in the heat generating system 3, for example for detecting the various service water temperatures and the actuators, e.g. of the mixer, are not shown in Figure 1, since they may be conventional in nature and arrangement.
  • the output signals of the sensor arrangement of the heat generating system 3 and the control responses of the control unit 4 are transmitted via a line system 9.
  • the previously described components of the modulating gas heater may be of known design.
  • the invention describes a new method and a device for calibrating the above-described modulating gas calorific value device.
  • the assembly shown in Figure 1 as a block 10 is provided, which cooperates with the control unit 4, the gas fitting 2 and the sensor arrangement 7 for carrying out the calibration process.
  • the assembly 10 is disposed in the housing of the control unit 4 and / or combined in terms of circuit with the other functional elements of the control unit 4.
  • the assembly 10 has a calibration request module 11, a memory module 12 and a program sequence module 13, which are respectively coupled via connections 14, 15 and 16 with associated functional components of the control unit 4. In the described embodiment, there are further connections between the calibration request module 11 and the program flow module 13 and between the latter and the memory 12.
  • the calibration request module has a timer 17 for periodically activating the calibration request module 11, for example at 24-hourly intervals, and a trigger button 18 for manually activating a calibration request. With the aid of means not shown in the drawing, the timer can be set to different triggering intervals.
  • a suitable controller or processor may be provided, which is in correlation with the control unit 4 and the memory module 12.
  • the control unit 4 When a calibration request from the module 11 (either after the time clock determined by the timer 17 automatically or by manual input via the operation button 18), the control unit 4 is caused to interrupt the heat demand-dependent (line 6) control of the valve 2 via the control line 5.
  • the program sequence module 13 assumes the control function of the control unit 4.
  • the program sequence module 13 can cause the control unit 4 to interrupt the heat demand-dependent control of the gas valve 2 after receiving a calibration signal via a line 19;
  • the connecting line 14 between the module 11 and the control unit 4 can be omitted.
  • a minimum heating power drive signal A min is applied to the armature 2 (block 31).
  • a storage value corresponding to the drive signal A min is stored in the memory module 12.
  • Starting from the drive signal A min causes the program flow module 13, the control unit 4 for reducing or changing the drive signal on the line 5 with the aim by reducing the gas outlet pressure on the gas supply to the burner 30, the burner flame 31 to extinguish (block 32).
  • This change of the drive signal takes place in the described embodiment along a ramp function, ie linear for a given increase.
  • Other modification functions are possible as far as they are reproducible and stored in the memory 12.
  • the extinction of the burner flame 31 is monitored continuously via the measuring arrangement 7 (decision block 33). As long as the burner flame is not extinguished, the drive signal is further changed while reducing the gas outlet pressure until the burner flame goes out.
  • the pressure applied to valve 2 in extinction of the burner flame value of the drive signal A from is detected and stored in the storage module 12 (block 34).
  • the block 34 is followed by another decision block 35, in which the new value of the drive signal A out is compared with an allowable tolerance range. If the control signal or control deviation remains within permitted limits, then the value of the control signal A out is used as a (new) reference point for determining limit values A min and A max , respectively (block 36).
  • the program sequence module 13 calculates, based on the new reference value A , the minimum and maximum limit values of the drive signal A in the modulating burner mode. These new limits are entered in the memory module 12 in replacement of the previously stored values; in other words, the memory 12 and thus the modulation range of the modulation valve 22 are updated.
  • the drive signal A min is corrected for minimum heating power to the fitting 2 and the repeated calibration process at block 31. If the corrected output value of A min after comparison within the comparison module 35 does not lead to a permissible control deviation (decision block 37), then in a further step (block 37) an interference signal is triggered which either leads to a simple fault message or to the complete gas deactivation via the Shutdown valve 21 leads. Under certain circumstances, two or more decision cycles 35 could also be performed by changing the minimum drive signal A min for minimum heating power (31). be caused by the program flow module 13, before a disruption of the gas supply takes place.
  • the gas heating value device is pre-programmed by the manufacturer so that the modulation range of the drive signal A mod .DELTA.A on the line 5 ( Figure 1) is fixed.
  • the lower limit value Amin and the upper limit value A max of the drive signal A are assigned values P min and Pmax, respectively, of the gas outlet pressure at the gas fitting 2.
  • the lower limit A min is approached after initiation of the calibration process and from there with a ramp function, the drive signal changed or reduced in the present case.
  • the drive signal A accordingly P out is detected by monitoring the burner flame, wherein the burner flame is extinguished.
  • Starting from the drive signal A from the reference to the modified .DELTA.A 1 control signal is stored in memory as the calibrated value.
  • the upper limit value A max of the control signal is achieved by A of a change of A to .DELTA.A 2 and this value is stored in the memory module.
  • the change from A min to A max can be computationally determined according to a given ramp function, but purely empirical parameters can also be used for the calculation.
  • the characteristic curve, ie the relationship between P and A, is also not necessarily linear. This is taken into account in each case via the values stored in the memory module and the calculation instructions provided in the program sequence module.
  • the upper limit A max or any operating point may also be used as the starting point for the calibration procedure.
  • the step 31 can be omitted. It is also possible to obtain the values stored in the memory of each calibration cycle, with the newly determined values additionally being stored. In this way is a later control of the calorific value and an analysis of the calibration data after reading the storage values possible. It is essential that in each variant of the method, the point of extinction of the burner flame (40) is used as a reference point for the calibration of the modulating Gasutzwertêts.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
EP05020863A 2004-10-21 2005-09-24 Procédé et dispositif pour le calibrage d'un appareil de chauffage Withdrawn EP1650502A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004051270A DE102004051270A1 (de) 2004-10-21 2004-10-21 Verfahren und Einrichtung zur Kalibrierung eines Heizwertgerätes

Publications (2)

Publication Number Publication Date
EP1650502A2 true EP1650502A2 (fr) 2006-04-26
EP1650502A3 EP1650502A3 (fr) 2006-12-27

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EP05020863A Withdrawn EP1650502A3 (fr) 2004-10-21 2005-09-24 Procédé et dispositif pour le calibrage d'un appareil de chauffage

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010066650A2 (fr) * 2008-12-08 2010-06-17 Siemens Building Technologies Hvac Products Gmbh Procédé de réglage et de commande d'un mécanisme de positionnement pour un brûleur
EP3029375A1 (fr) * 2014-12-04 2016-06-08 Robert Bosch Gmbh Dispositif d'appareil de chauffage et procédé de fonctionnement d'un dispositif d'appareil de chauffage
US11608983B2 (en) * 2020-12-02 2023-03-21 Brunswick Corporation Gas burner systems and methods for calibrating gas burner systems
US11608984B1 (en) 2017-11-30 2023-03-21 Brunswick Corporation Systems for avoiding harmonic modes of gas burners
US11940147B2 (en) 2022-06-09 2024-03-26 Brunswick Corporation Blown air heating system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006053992B4 (de) * 2006-11-16 2010-08-26 Robert Bosch Gmbh Verfahren zum Betreiben eines Gasvormischbrenners
EP3477201B1 (fr) 2017-10-26 2020-05-06 Honeywell Technologies Sarl Procédé de fonctionnement d'un appareil à brûleur à gaz
DE102022210234A1 (de) 2022-09-28 2024-03-28 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Betrieb einer modulationsfähigen Verbrennungsvorrichtung, Regelvorrichtung und Verbrennungsvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582118A1 (fr) * 1985-03-14 1986-11-21 Vaillant Sarl Procede pour le tarage d'un organe a caracteristique constante, reglant le debit de gaz d'un appareil marchant au gaz
DE29715591U1 (de) * 1996-08-29 1997-10-16 Joh. Vaillant Gmbh U. Co, 42859 Remscheid Vorrichtung zur Steuerung einer Gasabgabe
US5924857A (en) * 1995-09-01 1999-07-20 Whirlpool Corporation System for automatically seeking the minimum power deliverable by gas-fired atmospheric burners
EP1091174A1 (fr) * 1999-10-06 2001-04-11 Siemens Building Technologies AG Méthode de réglage des caractéristiques de brûleurs
EP1331444A2 (fr) * 2002-01-17 2003-07-30 Vaillant GmbH Méthode de régulation d'un brûleur à gaz

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19639487A1 (de) * 1996-09-26 1998-04-09 Honeywell Bv Verfahren und Vorrichtung zur Betriebsoptimierung eines Gasbrenners
DE10030063C2 (de) * 2000-06-19 2003-03-20 Honeywell Bv Regelungsverfahren für Gasbrenner
DE10300602B4 (de) * 2002-01-17 2012-01-05 Vaillant Gmbh Verfahren zur Regelung eines Gasbrenners

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582118A1 (fr) * 1985-03-14 1986-11-21 Vaillant Sarl Procede pour le tarage d'un organe a caracteristique constante, reglant le debit de gaz d'un appareil marchant au gaz
US5924857A (en) * 1995-09-01 1999-07-20 Whirlpool Corporation System for automatically seeking the minimum power deliverable by gas-fired atmospheric burners
DE29715591U1 (de) * 1996-08-29 1997-10-16 Joh. Vaillant Gmbh U. Co, 42859 Remscheid Vorrichtung zur Steuerung einer Gasabgabe
EP1091174A1 (fr) * 1999-10-06 2001-04-11 Siemens Building Technologies AG Méthode de réglage des caractéristiques de brûleurs
EP1331444A2 (fr) * 2002-01-17 2003-07-30 Vaillant GmbH Méthode de régulation d'un brûleur à gaz

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010066650A2 (fr) * 2008-12-08 2010-06-17 Siemens Building Technologies Hvac Products Gmbh Procédé de réglage et de commande d'un mécanisme de positionnement pour un brûleur
WO2010066650A3 (fr) * 2008-12-08 2011-07-28 Siemens Building Technologies Hvac Products Gmbh Procédé de réglage et de commande d'un mécanisme de positionnement pour un brûleur
CN102272526A (zh) * 2008-12-08 2011-12-07 西门子公司 用于对于燃烧器用的伺服驱动装置进行调节和控制的方法
EP3029375A1 (fr) * 2014-12-04 2016-06-08 Robert Bosch Gmbh Dispositif d'appareil de chauffage et procédé de fonctionnement d'un dispositif d'appareil de chauffage
US11608984B1 (en) 2017-11-30 2023-03-21 Brunswick Corporation Systems for avoiding harmonic modes of gas burners
US11608983B2 (en) * 2020-12-02 2023-03-21 Brunswick Corporation Gas burner systems and methods for calibrating gas burner systems
US11940147B2 (en) 2022-06-09 2024-03-26 Brunswick Corporation Blown air heating system

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Publication number Publication date
DE102004051270A1 (de) 2006-04-27
EP1650502A3 (fr) 2006-12-27

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