EP3825623A1 - Appareil chauffant à réglage de mode d'urgence - Google Patents

Appareil chauffant à réglage de mode d'urgence Download PDF

Info

Publication number
EP3825623A1
EP3825623A1 EP20206829.2A EP20206829A EP3825623A1 EP 3825623 A1 EP3825623 A1 EP 3825623A1 EP 20206829 A EP20206829 A EP 20206829A EP 3825623 A1 EP3825623 A1 EP 3825623A1
Authority
EP
European Patent Office
Prior art keywords
heater
combustion control
flame
primary combustion
sensor
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.)
Pending
Application number
EP20206829.2A
Other languages
German (de)
English (en)
Inventor
Christian Fischer
Heinz-Jörg Tomczak
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.)
Vaillant GmbH
Original Assignee
Vaillant 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 Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP3825623A1 publication Critical patent/EP3825623A1/fr
Pending legal-status Critical Current

Links

Images

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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/176—Improving or maintaining comfort of users
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • 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
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods 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
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel 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
    • 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
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • 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
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/104—Inspection; Diagnosis; Trial operation
    • 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
    • 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
    • F24H15/238—Flow rate
    • 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
    • F24H15/25—Temperature of the heat-generating means in the heater
    • 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
    • F24H9/20—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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/21—Measuring temperature outlet temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/14—Flame sensors using two or more different types of flame sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • 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
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • 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
    • F24H15/345—Control of fans, e.g. on-off control
    • F24H15/35—Control of the speed of fans

Definitions

  • the invention relates to a method for operating a heater for heating a building, a heater for heating a building and the use of an ionization electrode.
  • heaters for heating a building that use fossil fuels to provide hot water (heating and / or service water).
  • a wide variety of environmental conditions or malfunctions can lead to the combustion control strategy of the heater reaching system limits. In such cases, the heater may fail to provide hot water.
  • the object of the invention to enlarge the working range of a heater.
  • the user should, in particular, be provided with an increased level of comfort.
  • the method can be used in particular to adjust the fuel gas / air for a fuel gas operated burner of a heating device.
  • the method advantageously makes it possible to provide an emergency operation control if the primary combustion control fails.
  • the secondary combustion control contributes in particular to maintaining minimal heater functionality and thus to safeguarding comfort.
  • the secondary combustion control can in particular also be described as a comfort safety mode.
  • the hot water convenience can be increased by using another, secondary (redundant) combustion control, preferably with the aid of a preferably combined ignition and Monitoring electrode can be ensured.
  • This can be done in particular by approaching the flame lift-off point, which is physically linked to a defined gas-air mixture ratio (defined lambda).
  • a defined gas-air mixture ratio defined lambda
  • this sequence is called up cyclically at, in particular, sufficiently short time intervals, so that a safe control status can be assumed.
  • the heater is usually a gas and / or oil heater.
  • this relates in particular to a heating device which is set up to burn one or more fossil fuels such as liquid gas, natural gas and / or crude oil, possibly with the supply of ambient air from a building, in order to use energy to heat water, for example to produce in an apartment of the building.
  • the heater can be a so-called gas condensing boiler.
  • the heater generally has at least one burner and a delivery device, such as a fan, which delivers a mixture of fuel (gas) and combustion air (through a mixture duct of the heater) to the burner.
  • the exhaust gas resulting from the combustion can then be routed through an (internal) exhaust pipe of the heater to an exhaust system (of a house).
  • Several heaters are usually connected to this exhaust system.
  • the building can in principle be a residential building and / or a commercially used building.
  • the heater can in particular be used to heat only part of the building, such as an individual apartment or an individual room. Alternatively or cumulatively, the heater can also be used to heat a water system (heating and / or service water) in the building or a water system in an apartment.
  • the secondary combustion control is preferably constructed in a simpler manner than the primary combustion control. This can be implemented, for example, in that the secondary combustion control uses fewer sensors than the primary combustion control. This means that the secondary combustion control can work with fewer input variables. This allows the secondary combustion control to be more robust than the primary combustion control. In addition, redundancy for the combustion control can thus be created in a comparatively cost-effective manner. The robustness of the secondary combustion control can be at the expense of accuracy, but this can be accepted with the aim of maintaining the working range of the device as much as possible.
  • the secondary combustion control preferably uses (only) one sensor. This sensor can particularly preferably be a flame monitoring electrode, in particular an ionization electrode.
  • the secondary combustion control can preferably also access performance data from a conveyor device (e.g. fan) and / or a gas valve of the heater.
  • a conveyor device e.g. fan
  • the primary combustion control can use a large number of sensors (at least two sensors that detect different input variables).
  • the primary combustion control is carried out as a function of a (sensor or measurement) signal from at least one sensor of the heater.
  • this can be a Gas flow sensor (volume or mass flow sensor), an air flow sensor (volume or mass flow sensor), a mixture flow sensor (volume or mass flow sensor), an exhaust gas sensor (e.g. CO sensor, O 2 sensor), a temperature sensor (e.g. B. for measuring the temperature of the flame and / or burner) and / or a radiation sensor (e.g. infrared sensor, in particular for measuring the temperature of the flame and / or burner) can be used, each of which usually sends a measurement signal to the Transmit control device.
  • the primary combustion control can also use measurement signals from the flame monitoring electrode. Depending on one or more of these measurement signals, a controlled variable can be determined and regulated as a function of a reference variable.
  • an implausibility and / or disruption of the primary combustion control is detected via at least one sensor of the heater and / or a flame monitoring electrode of the heater.
  • an implausibility can be inferred if two or more of the sensors deliver contradicting measurement results.
  • a malfunction can be inferred if one or more of the sensors deliver measurement results that indicate a flame lift (flame has gone out).
  • an implausibility and / or disruption of the primary combustion control is recognized from information about external disruptive influences, such as environmental influences, weather influences, etc.
  • data from the sensors can be evaluated or external data (e.g. from a weather database) can be accessed.
  • the secondary combustion control is carried out as a function of a signal from a flame monitoring electrode of the heater.
  • the flame monitoring electrode can in particular be an ignition and monitoring electrode, such as, for example act an ionization electrode.
  • the secondary combustion control can take place in particular as a function of a voltage or current signal from a flame monitoring electrode system.
  • the flame monitoring electrode be provided in addition to at least one (further) sensor of the heater.
  • the flame monitoring electrode is preferably provided in addition to one or more of the following sensors: gas flow sensor (volume or mass flow sensor), air flow sensor (volume or mass flow sensor), mixture flow sensor (volume or mass flow sensor), exhaust gas sensor (e.g. CO Sensor, O 2 sensor), temperature sensor (e.g. for measuring the temperature of flame and / or burner) and / or radiation sensor (e.g. infrared sensor, in particular for measuring the temperature of flame and / or burner).
  • step c) to provide the secondary combustion control
  • a flame monitoring electrode e.g. ionization electrode
  • the signal from the flame monitoring electrode being direct or indirectly is measured and during the operation of the burner (in step c)) the fuel gas-air mixture is leaned and the signal from the flame monitoring electrode is continuously measured, the gradient of the signal from the flame monitoring electrode being formed when a certain value is exceeded Gradients or, if the gradient rises disproportionately, the leaning of the fuel gas-air mixture is ended and the fuel gas-air mixture is enriched in a defined manner.
  • the air can be conveyed via a fan with a fan motor and the gradient of the signal from the flame monitoring electrode can be determined by dividing the differential signal from the flame monitoring electrode with the differential speed of the fan motor.
  • the fuel gas can be passed through a gas valve with an actuator and the gradient of the signal from the flame monitoring electrode can be determined by dividing the difference signal from the flame monitoring electrode with the differential setting position of the actuator.
  • the gradient of the signal from the flame monitoring electrode can be determined by dividing the difference signal from the ionization electrode by the difference time.
  • a constant voltage source or constant current source can be connected in series with the flame of the burner and a resistor and the voltage drop across the resistor can be measured as a signal from the flame monitoring electrode.
  • the intermediate steps i) to iii) are repeated cyclically at defined time intervals. This advantageously allows the secondary combustion control to offer continuous combustion control or a redundancy to the primary combustion control that can also be used over a longer period of time.
  • a computer program for carrying out a method presented here can be specified.
  • this relates in particular to a computer program (product), comprising instructions which, when the program is executed by a computer, cause the computer to carry out a method described here.
  • a machine-readable storage medium can also be specified on which the computer program proposed here is deposited or stored.
  • the machine-readable storage medium is usually a computer-readable data carrier.
  • a heating device for heating a building comprising a burner, at least one sensor and a control device which is provided and set up to carry out a primary combustion control as a function of a signal from the at least one sensor, the heating device also having a Flame monitoring electrode which protrudes from the flame area of the burner and provides the control device with a signal for carrying out a secondary combustion control which differs from the primary combustion control.
  • the heater is set up to carry out a method presented here.
  • the control device of the heating device can be set up to carry out the method.
  • the control device can, for example, have or access a memory on which a program for carrying out the method is stored.
  • the program can be carried out, for example, by a processor of the control device.
  • the program can be, for example, the computer program described above.
  • the memory can be formed, for example, by means of the machine-readable storage medium described above. It is also conceivable that the method described above is carried out with the heater presented here.
  • an ionization electrode for maintaining an emergency control of a heating device for heating a building is also proposed.
  • Figure 1 shows schematically an exemplary sequence of the method in the form of a flow chart.
  • the method is used to operate a heater 100 for heating a building (not shown here).
  • the sequence of steps a), b) and c) shown with blocks 110, 120 and 130 is exemplary and can thus be run through, for example, in a regular operating sequence.
  • steps a), b) and c) are carried out at least partially in parallel.
  • heater 100 is operated with primary combustion control.
  • an implausibility and / or disruption of the primary combustion control is detected.
  • the heater 100 is operated with a secondary combustion control that differs from the primary combustion control if an implausibility and / or malfunction of the primary combustion control has been detected.
  • FIG 2 shows schematically an exemplary structure of the heater 100 for heating a building.
  • the heater 100 comprises a burner 1, at least one sensor 20, 21, 22, 23, 24, 25 and a control device 7 which is used to carry out a primary combustion control as a function of a signal from the at least one sensor 20, 21, 22, 23, 24 , 25 is provided and set up.
  • the heater 100 comprises a flame monitoring electrode 3 protruding into the flame area 2 of the burner 1, which provides the control device 7 with a signal for performing a secondary combustion control that differs from the primary combustion control.
  • the heater 100, in particular the control device 7, is used to carry out a method described here (cf. Figure 1 ) set up.
  • the primary combustion control is carried out as a function of a signal from at least one sensor 20, 21, 22, 23, 24, 25 of the heater 100.
  • a gas flow sensor 20 for measuring a gas flow 30 an air flow sensor 21 for measuring an air flow 31, a mixture flow sensor 22, an exhaust gas sensor 23 for measuring an exhaust gas flow 32, a temperature sensor 24 and a radiation sensor 25 are provided, each of which transmits a measurement signal to the control device 7.
  • the primary combustion control can also access measurement signals from the flame monitoring electrode 3. Depending on one or more of these measurement signals, a controlled variable can be determined and regulated as a function of a reference variable.
  • an implausibility and / or disruption of the primary combustion control can be detected via at least one of the sensors 20, 21, 22, 23, 24, 25 of the heater 100 and / or the flame monitoring electrode 3 of the heater 100.
  • an implausibility can be inferred if two or more of the sensors 20, 21, 22, 23, 24, 25 deliver contradicting measurement results.
  • a malfunction can be inferred if one or more of the sensors 20, 21, 22, 23, 24, 25 deliver measurement results that indicate a flame lift (flame has gone out).
  • the secondary combustion control can be carried out as a function of a signal from the flame monitoring electrode 3 of the heater 100.
  • An ionization electrode is used here as an example of the flame monitoring electrode 3, the mode of operation of which is explained in more detail below.
  • the flame monitoring electrode 3 is provided in addition to at least one further sensor 20, 21, 22, 23, 24, 25 of the heater 100.
  • step c) several intermediate steps can be carried out, which are shown in block 130 by way of example with blocks 210, 220 and 230.
  • block 210 according to intermediate step i), at least one operating parameter of the heater 100 is varied in order to approach a flame lift-off point.
  • block 220 in accordance with intermediate step ii), the approach to the flame lifting point is monitored by means of the flame monitoring electrode 3.
  • block 230 in accordance with intermediate step iii), the at least one operating parameter of the heater 100 is set to a value that is determined as a function of the value, which the operating parameter had immediately before or when the flame lift-off point was reached.
  • the burner 1 has, for example, a fan 8 with a fan motor 9 in an air inlet 12.
  • the fan motor 9 and the actuator 11 are connected to the control device 7.
  • the ionization electrode 3 is connected to a voltage source 4. This is connected to its second electrode with a resistor 5, which in turn is connected to the burner 1.
  • a voltmeter 6, which is connected to the controller 7, is connected in parallel with the resistor 5.
  • the fan 8 When the burner 1 is in operation, the fan 8 sucks in combustion air via the air inlet 12. The speed n of the fan 8 can be adjusted continuously. Via the gas valve 10, the amount of fuel gas supplied, which via the gas line 13 flows in, are continuously changed; here the number of steps ns of the actuator 11 is recorded.
  • fuel gas and air are mixed with one another and ignited at the outlet of the burner 1, so that a flame 2 is formed. Since the ions of the flame 2 are electrically conductive, a current can flow between the ionization electrode 3 and the burner 1. It follows from this that an electrical voltage U flame is present. The ion flow through the flame 2 ensures that the electrical circuit (burner 1, ionization electrode 3, voltage source 4, resistor 5) is closed.
  • FIG 3 shows in this context the course of the voltage U measured at the resistor 5 over the air ratio ⁇ and the fan speed n.
  • the burner 1 initially runs with a previously unknown excess of air.
  • the speed n of the fan 8 is increased. This increases the air ratio ⁇ .
  • at least one operating parameter (here, for example, the air ratio ⁇ ) of the heater 100 can be varied in order to approach a flame lift-off point.
  • the voltage drop U across the resistor 5 is measured continuously over the time t and passed on to the control device 7.
  • the gradient .DELTA.U / .DELTA.n is calculated in the control device 7, where n is the speed of the fan 8.
  • the gradient increases ⁇ U / ⁇ n increases excessively from a certain point onwards, this is an indication that the flame will soon take off and thus tear off.
  • the air ratio ⁇ is then about 1.6. This represents an example of the fact that and as in intermediate step ii), preferred monitoring of the approach to the flame lift-off point by means of the flame monitoring electrode 3 can take place.
  • a gradient can also be formed from the differential voltage ⁇ U to the differential setting position of the actuator ⁇ n s if the fuel gas quantity is reduced instead of increasing the fan speed.
  • a gradient can also be formed from time ( ⁇ U / ⁇ t) in the case of constant leaning.
  • the operating state in which take-off is imminent can be determined by comparing the current gradient with at least one previous gradient and, in the event that the current gradient exceeds the comparison value or values by a certain percentage, the expected state is present.
  • the lowest measured gradient can be used as a comparison value.
  • an absolute value can be specified. This represents an example of the fact that and as in intermediate step ii), preferred monitoring of the approach to the flame lift-off point by means of the flame monitoring electrode 3 can take place.
  • the time difference or speed difference should not be too small.
  • the voltage drop U across the resistor 5 the voltage of the flame U flame can also be measured directly. In this case, however, the ionization voltage is at a maximum in the case of stoichiometric combustion and the ionization voltage signal drops when the air ratio increases.
  • a constant voltage Uo a constant current source with a constant current I 0 can also be connected to the series circuit of the resistor 5 with the flame 2. A certain voltage is set depending on the flame resistance.
  • the intermediate steps i) to iii) can be repeated cyclically at defined time intervals in order to enable continuous combustion control.
  • the heater 100 described also represents an example of the use of an ionization electrode 3 to maintain emergency control of a heater 100 for heating a building.
  • the working range of the heater can be enlarged by the method described and the heater described.
  • the user can in particular be provided with an increased level of comfort, since the heater fails less often.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Fluid Mechanics (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Control Of Combustion (AREA)
EP20206829.2A 2019-11-20 2020-11-11 Appareil chauffant à réglage de mode d'urgence Pending EP3825623A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019131310.4A DE102019131310A1 (de) 2019-11-20 2019-11-20 Heizgerät mit Notbetriebsregelung

Publications (1)

Publication Number Publication Date
EP3825623A1 true EP3825623A1 (fr) 2021-05-26

Family

ID=73343845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20206829.2A Pending EP3825623A1 (fr) 2019-11-20 2020-11-11 Appareil chauffant à réglage de mode d'urgence

Country Status (2)

Country Link
EP (1) EP3825623A1 (fr)
DE (1) DE102019131310A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4047268A1 (fr) * 2021-02-18 2022-08-24 BDR Thermea Group B.V. Procédé de fonctionnement d'un chauffage au gaz
EP4141322A1 (fr) * 2021-08-12 2023-03-01 Vaillant GmbH Procédé et dispositif de fonctionnement et de commande sécurisés d'un processus de combustion dans un appareil de chauffage pour la combustion d'hydrogène
EP4174377A1 (fr) * 2021-11-02 2023-05-03 Vaillant GmbH Procédé de fonctionnement d'un appareil de chauffage, programme informatique, support d'enregistrement, appareil de régulation et de commande, appareil de chauffage et utilisation d'un signal
IT202100032360A1 (it) * 2021-12-23 2023-06-23 Sit Spa Metodo e apparato per il monitoraggio e controllo della combustione in apparecchi bruciatori a gas combustibile

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327785A1 (fr) * 1988-02-06 1989-08-16 Joh. Vaillant GmbH u. Co. Procédé de commande d'une source de chaleur
DE3904022A1 (de) * 1988-02-10 1989-08-24 T F Trading A S Vorrichtung fuer die zuendung und ueberwachung der verbrennung eines brennbaren gases und elektrodenvorrichtung fuer eine solche vorrichtung
DE19601517A1 (de) * 1996-01-17 1997-07-24 Stiebel Eltron Gmbh & Co Kg Regelung eines Gasheizgeräts
RU2256856C2 (ru) 2003-02-28 2005-07-20 Попов Александр Иванович Автономное устройство безопасности и регулирования для газового котла (варианты)
EP2014985A2 (fr) * 2007-07-13 2009-01-14 Vaillant GmbH Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz
US20110137467A1 (en) 2008-07-10 2011-06-09 Honeywell International Inc. Backup control for hvac system

Family Cites Families (5)

* 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
DE20011457U1 (de) * 2000-06-29 2000-12-07 Wartewig, Andrea, 37085 Göttingen Laborgasbrenner mit einem Brennerkopf und Einrichtungen zum Überwachen des Brennerkopfs
DE102011005511B4 (de) * 2011-03-14 2012-09-27 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Steuerung eines Gasventil-Systems für einen Gasbrenner und Gaskochgerät mit einem Gasbrenner mit einem solchen Gasventil-System
DE202012103507U1 (de) * 2011-09-23 2012-10-10 Viessmann Werke Gmbh & Co Kg Gerät
DE102017204030A1 (de) * 2016-09-02 2018-03-08 Robert Bosch Gmbh Verfahren zum Erfassen eines Alterungszustands eines Heizsystems sowie eine Steuereinheit und ein Heizsystem

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327785A1 (fr) * 1988-02-06 1989-08-16 Joh. Vaillant GmbH u. Co. Procédé de commande d'une source de chaleur
DE3904022A1 (de) * 1988-02-10 1989-08-24 T F Trading A S Vorrichtung fuer die zuendung und ueberwachung der verbrennung eines brennbaren gases und elektrodenvorrichtung fuer eine solche vorrichtung
DE19601517A1 (de) * 1996-01-17 1997-07-24 Stiebel Eltron Gmbh & Co Kg Regelung eines Gasheizgeräts
RU2256856C2 (ru) 2003-02-28 2005-07-20 Попов Александр Иванович Автономное устройство безопасности и регулирования для газового котла (варианты)
EP2014985A2 (fr) * 2007-07-13 2009-01-14 Vaillant GmbH Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz
US20110137467A1 (en) 2008-07-10 2011-06-09 Honeywell International Inc. Backup control for hvac system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4047268A1 (fr) * 2021-02-18 2022-08-24 BDR Thermea Group B.V. Procédé de fonctionnement d'un chauffage au gaz
WO2022175291A1 (fr) * 2021-02-18 2022-08-25 Bdr Thermea Group B.V. Procédé pour faire fonctionner un dispositif de chauffage au gaz
EP4141322A1 (fr) * 2021-08-12 2023-03-01 Vaillant GmbH Procédé et dispositif de fonctionnement et de commande sécurisés d'un processus de combustion dans un appareil de chauffage pour la combustion d'hydrogène
EP4174377A1 (fr) * 2021-11-02 2023-05-03 Vaillant GmbH Procédé de fonctionnement d'un appareil de chauffage, programme informatique, support d'enregistrement, appareil de régulation et de commande, appareil de chauffage et utilisation d'un signal
IT202100032360A1 (it) * 2021-12-23 2023-06-23 Sit Spa Metodo e apparato per il monitoraggio e controllo della combustione in apparecchi bruciatori a gas combustibile
WO2023119182A1 (fr) * 2021-12-23 2023-06-29 Sit S.P.A. Procédé et appareil de surveillance et de commande de combustion dans un appareil de brûleur à gaz combustible

Also Published As

Publication number Publication date
DE102019131310A1 (de) 2021-05-20

Similar Documents

Publication Publication Date Title
EP3825623A1 (fr) Appareil chauffant à réglage de mode d'urgence
EP2014985B1 (fr) Procédé de réglage du rapport air/carburant d'un brûleur fonctionnant au gaz
EP2017531B1 (fr) Procédé de vérification d'un signal issu d'électrodes d'ionisation pour brûleurs
EP1002999A2 (fr) Commande de la puissance d'un brûleur d' un appareil de cuisson à gaz
WO2017054798A1 (fr) Procédé de différentiation de deux gaz combustibles, prévus pour un processus de combustion, présentant des teneurs énergétiques différentes
DE102019119186A1 (de) Verfahren und Vorrichtung zur Regelung eines Brenngas-Luft-Gemisches in einem Heizgerät
DE102019131346A1 (de) Verfahren zum Bestimmen der Brennstoffart mittels Luftstromsensor
DE4312801A1 (de) Verfahren zur Steuerung eines Gas-Gebläsebrenners
EP4060235A1 (fr) Procédé de fonctionnement d'un appareil de chauffage pourvu d'ensemble électronique gaz-air
EP4027058A1 (fr) Procédé et agencement de détection du liquide dans un ventilateur d'un appareil de chauffage
EP0614051B1 (fr) Automate à brûleur
EP4043792A1 (fr) Procédé et agencement destinés à l'utilisation des produits de combustion ou des propriétés de l'air dans la trajectoire d'air de combustion d'un appareil de chauffage au gaz permettant sa régulation et/ou son analyse de l'état
DE102011010074B4 (de) Verfahren zur Überprüfung der Funktionstüchtigkeit eines Sensors und zur Regelung einer Feuerungsanlage
DE102017204014A1 (de) Verfahren zur Bestimmung einer Brennstofftypengröße in einem Heizsystem
DE10214879A1 (de) Verfahren zur Überwachung eines Gasgeräts, insbesondere eines Wärmeerzeugers, mit überwiegend flammloser Oxidation und Überwachungsmodul zur Durchführung des Verfahrens
EP4145047A1 (fr) Procédé et dispositif de détection de l'allumage de flammes dans une chambre de combustion d'un appareil chauffant, produit programme informatique et utilisation
DE102007014032A1 (de) Vorrichtung zum Verbrennen fossiler Brennstoffe
EP4174377A1 (fr) Procédé de fonctionnement d'un appareil de chauffage, programme informatique, support d'enregistrement, appareil de régulation et de commande, appareil de chauffage et utilisation d'un signal
DE102022122811A1 (de) Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuer-gerät, Brennstoffdurchflussregler und Heizgerät
DE2752021A1 (de) Eigensichere reguliereinrichtung fuer die groesse des luftueberschusses in den verbrennungsgasen einer verbrennungsanlage
EP4215815A1 (fr) Procédé de fonctionnement d'un appareil de chauffage produisant de la flamme d'une installation de chauffage, programme de com-puter, support de stockage, appareil de commande et utilisation d'un débit d'une installation de chauffage et d'ionisation
DE102022126343A1 (de) Verfahren zum Bestimmen einer Durchflussmenge, Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät und Heizgerät
DE102023104431A1 (de) Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät und Heizgerät
DE102022123906A1 (de) Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät, Heizgerät und Verwendung einer zweigeteilten Gaszuführung
DE102022125151A1 (de) Verfahren zur Regelung eines Fluids, Regelung und Computerprogramm

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20211123

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

INTG Intention to grant announced

Effective date: 20240723

TPAA Information related to observations by third parties modified

Free format text: ORIGINAL CODE: EPIDOSCTIPA

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA