CN118687166A - Control of combustion apparatus - Google Patents

Control of combustion apparatus Download PDF

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Publication number
CN118687166A
CN118687166A CN202410334157.1A CN202410334157A CN118687166A CN 118687166 A CN118687166 A CN 118687166A CN 202410334157 A CN202410334157 A CN 202410334157A CN 118687166 A CN118687166 A CN 118687166A
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CN
China
Prior art keywords
fuel
signal
combustion
function
sensor
Prior art date
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Pending
Application number
CN202410334157.1A
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Chinese (zh)
Inventor
R·洛克施米德
B·施米德勒
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Siemens AG
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Siemens 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 Siemens AG filed Critical Siemens AG
Publication of CN118687166A publication Critical patent/CN118687166A/en
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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
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/10—Analysing fuel properties, e.g. density, calorific
    • 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
    • F23N2223/08—Microprocessor; Microcomputer
    • 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

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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)

Abstract

A method for controlling a combustion apparatus (1), the combustion apparatus (1) comprising a first combustion sensor (9) and a second sensor (10, 11), the method comprising the steps of: specifying a setpoint value for the air-fuel ratio lambda and a first setpoint value for the signal of the first fuel (7) from the first combustion sensor (9); -controlling the combustion device (1) to a first setpoint value by means of a first combustion sensor (9); recording a first signal from a first combustion sensor (9); recording a second signal from a second sensor (10, 11); determining a difference between the first and second signals; -assigning the difference to the second fuel (7); if the second fuel (7) is different from the first fuel (7): determining a second setpoint value of the signal from the first combustion sensor (9) as a function of the second fuel (7); and controlling the combustion device (1) to a second setpoint value by means of the first combustion sensor (9).

Description

Control of combustion apparatus
Technical Field
The present disclosure relates to the evaluation of fuel in a combustion apparatus. In particular, the present disclosure relates to the evaluation of fuels in the form of combustible gases or gas mixtures containing hydrogen.
Background
For example, common gas types in combustion plants are those from group E gases (according to EN 437:2009-09) and gases from group B/P (according to EN 437:2009-09). As with almost all gases in the second gas group (according to EN437:2009-09 standard), the gases from group E contain methane as their main component. As with all gases from the third gas group (according to EN437: 2009-09), the gases from the B/P group are based on propane gas. The mixture based on methane gas or propane gas is eventually a mixture from different gas sources to which the combustion device can be supplied. There is an increasing interest in mixing and burning natural gas and hydrogen.
When a gas mixture of methane and hydrogen is burned with excess air maintained, the measured ionization current changes as the hydrogen content increases. For a constant volume of air, the air-fuel ratio λ varies with the hydrogen content if the air supply or blower speed or power is controlled to a constant set point ionization current value. This is also associated with a change in the efficiency of the combustion device. At best, an elevated value of undesirable combustion products (such as, for example, carbon monoxide) may also occur.
Furthermore, the altered hydrogen content may cause tempering. The air-fuel ratio lambda also has an influence on this. The narrower the air-fuel ratio lambda is kept in range during operation, the easier/simpler it is to prevent flashback.
In a conventional ionization current controller, a set point ionization current value for methane gas is maintained for each air supply or blower speed or power. The hydrogen dopant causes a different ionization current than, for example, pure methane gas. However, since the amount of hydrogen admixture known so far is small, only a slight difference in the air-fuel ratio λ and thus the efficiency has been observed.
Siemens Building TechnologiesAG from zurich, switzerland (siemens construction technology company) filed patent application DE10030630A1 on 28 th month 6 in 2000. This application was published on 1 month and 10 days 2002. DE10030630A1 proposes and claims a method for monitoring the speed of a blower. The speed of the blower of the combustion device is established during the process. The established speed is compared to a reference value. This comparison reveals whether the blower is in a sufficiently stable state. If the velocity deviates too far from the reference value, the velocity measurement may be forwarded directly. The purpose of the method from DE10030630A1 is to achieve an actual balance between the maximum possible accuracy in the steady state of the blower on the one hand and the error as a result of dynamic changes on the other hand.
European patent EP1154202B2"Control device for a burner (control device for burner)" was issued to SIEMENS SCHWEIZ AG (siemens swiss company) in switzerland on 12/9 2009. The corresponding patent application EP1154202A2 was filed by siemens building technology company, swiss, at 27, 4, 2001. Application EP1154202A2 was published in 14, 11, 2001 and claims priority from 12, 5, 2000. EP1154202B2 discloses and claims a control facility for a combustion apparatus using an ionising electrode. The ionizing electrode is arranged in a flame zone of the combustion device. The combustion apparatus controller weights the first and second control signals using the ionization signal from the ionization electrode. The controller generates actuation signals for actuating the elements from the control signals weighted in this way.
Additional european patent EP1396681B1"Burner controller and method of setting aburner controller (burner controller and method of setting the burner controller)" was issued to siemens swiss, switzerland, 12, 2005. The corresponding patent application EP1396681A1 was filed by siemens building technologies, inc. On 9/4 of 2002. Application EP1396681A1 was published on 10/3/2004. EP1396681B1 claims a burner controller for evaluating signals from a combustion sensor. The combustion sensor may be an ionizing electrode in the flame region. The burner controller determines an actuation signal for a fuel supply or an air supply based on the combustion sensor signal.
An additional european patent EP3299718B1"Gas type detection (gas type detection)" was issued to siemens in germany at 10 and 30 of 2019. The corresponding patent application EP3299718A1 was filed by Siemens Germany on day 2016, 9 and 21. Application EP3299718A1 was published on 28, 3, 2018. EP3299718B1 claims a method of combusting fuel from a specified fuel group and a computer readable storage medium having a set of instructions for performing the method. The method includes determining a fuel supply and a requested power of the combustion device. If the fuel supply and the requested power are outside the range of reliable availability of fuel, a fault signal is generated.
Patent application DE102018118288A1 was filed on 7.27.2018, no. 84030 ebm-papst Landshut GmbH (Evian Tokida Shu Teyou Co., ltd.). The application was published on 30 days 1 month in 2020. DE102018118288A1 proposes a method for monitoring and controlling the burner flame of a heating appliance burner. The method claimed in DE102018118288A1 comprises applying two alternating voltages to the ionizing electrode. The ionization current associated with the ac voltage is then measured and the difference calculated.
German patent DE19839160B4"Method and circuit for controlling a gas burner (method and circuit for controlling a gas burner)" was issued to Stiebel Eltron GmbH & Co KG (sburgia, inc.) of holtz mount 37603, germany, 12/23. The corresponding patent application DE19839160A1 was filed by Stonegaku Ind two-party corporation of Holtzmine 37603, germany on 8 th month of 1998. Application DE19839160A1 is disclosed in month 3 and 2 of 2000. The method claimed in DE19839160B4 involves a first and a second ionization signal with opposite curves. If the first ionization signal deviates excessively from the control value or the second ionization signal deviates excessively from the check value, the combustion may be interrupted.
The object of the present disclosure is to control a combustion apparatus, in particular with respect to a gas or gas mixture comprising hydrogen. Furthermore, the present disclosure additionally relates to optimized operation of a combustion apparatus without flashback.
Disclosure of Invention
The present disclosure shows how the set point current of the combustion sensor can be corrected by means of data available in the system or by means of additional sensor values. The combustion sensor may in particular be a combustion efficiency sensor and/or an ionization electrode. As a result of the correction of the setpoint current, the combustion device keeps the value of the air-fuel ratio λ within a narrow tolerance range. The additional sensor values may likewise originate from flow sensors arranged in the air supply line and/or the fuel supply line of the combustion device. Furthermore, the additional sensor value may originate from a further combustion sensor, in particular from a further ionization electrode. The additional sensor value can likewise be derived from the valve position in comparison to the burner power.
Maintaining the air-fuel ratio lambda within a narrow tolerance range is particularly relevant for combustion devices in which hydrogen is combusted. The hydrogen is preferably combusted as part of the fuel mixture and/or the gas mixture. The present disclosure shows in particular how the air-fuel ratio lambda can be kept within a narrow tolerance range when hydrogen is a substantial proportion of the fuel mixture. When the proportion of hydrogen under standard conditions reaches more than five percent by volume of the fuel mixture, the hydrogen constitutes a substantial proportion of the fuel mixture. In particular, when the proportion of hydrogen under standard conditions reaches more than ten percent by volume of the fuel mixture, hydrogen may constitute a substantial proportion of the fuel mixture. Furthermore, when the proportion of hydrogen under standard conditions reaches more than 20% by volume of the fuel mixture, the hydrogen may constitute a substantial proportion of the fuel mixture. The standard condition is when the temperature is 273.15 kelvin and the pressure is 101325 pascals.
The present disclosure further teaches evaluating two sensor signals. For this purpose, an index based on the two sensor signals is advantageously determined. For example, two ionization currents from two ionization electrodes may be evaluated by calculating their quotient.
The present disclosure further teaches evaluating the difference between the two sensor signals. For example, two ionization currents from two ionization electrodes can be evaluated by calculating their differences. In addition to the amount of difference, the sign of the difference allows conclusions to be drawn about the fuel and/or the fuel mixture in the combustion device.
The present disclosure further teaches the adjustment of an actuator such as, for example, a blower or a fuel valve. Adjustment of the actuator is performed quickly and is used to change the composition of the fuel mixture. At the same time, the ionization current is recorded by a second sensor (e.g., a second ionization electrode). In many cases, the ionization current recorded while varying the composition of the fuel mixture enables the fuel and/or fuel mixture to be dispensed explicitly.
Drawings
Various features will be apparent to those skilled in the art from the following detailed description of the disclosed non-limiting embodiment. The drawings that accompany the detailed description can be briefly described as follows:
Fig. 1 shows a combustion apparatus with an optional additional sensor system such as, for example, a flow sensor or a plurality of combustion sensors in the form of ionization electrodes.
FIG. 2 illustrates a plurality of ionization current graphs plotted against air supply or blower speed or power of a combustion apparatus when different fuel components are combusted.
Fig. 3 shows a plurality of ionization current graphs plotted against air-fuel ratio λ for various fuel components and various positions of the ionization electrode at a certain air supply or blower speed or power.
Detailed Description
Fig. 1 shows a combustion device 1, such as, for example, a wall-mounted gas burner and/or a fuel-oil burner. When the combustion apparatus 1 is in operation, the flame of the heat generator burns in the combustion chamber 2. The heat generator transfers thermal energy of the hot fuel and/or fuel gas to another fluid, such as, for example, water. Hot water is used, for example, to operate a hot water heating system and/or to heat drinking water. According to another embodiment, the thermal energy of the hot fuel gas may be used to heat an article, for example in an industrial process. According to a further embodiment, the heat generator is part of a system using combined heat and power cycles, for example an engine of such a system. According to another embodiment, the heat generator is a gas turbine. The heat generator can also be used to heat water in a system for recovering lithium and/or lithium carbonate. Exhaust gases 3 are discharged from the combustion chamber 2, for example through a flue.
The air supply 5 for the combustion process is supplied via a (motor) driven blower 4. Via signal line 12, closed-loop and/or open-loop control and/or monitoring facility 18 designates to blower 4 the air supply V L that it needs to deliver. The blower speed is thus a measure of the air supply 5.
According to one embodiment, blower speed is reported back from blower 4 to closed and/or open loop control and/or monitoring facility 18. For example, the closed-loop and/or open-loop control and/or monitoring facility 18 establishes the rotational speed of the blower 4 via the signal line 13.
The closed-loop and/or open-loop control and/or monitoring facility 18 preferably includes a microcontroller. The closed-loop and/or open-loop control and/or monitoring facility 18 desirably includes a microprocessor. The closed-loop and/or open-loop control and/or monitoring facility 18 may be a control facility. The control means preferably comprises a microcontroller. The control means desirably comprises a microprocessor. The control facility may comprise a proportional-integral controller. The control facility may further comprise a proportional-integral-derivative controller.
The closed-loop and/or open-loop control and/or monitoring facility 18 may further comprise field programmable (logic) gate devices. The closed-loop and/or open-loop control and/or monitoring facility 18 may additionally comprise an application specific integrated circuit.
In one embodiment, signal line 12 includes an optical waveguide. The signal line 13 for establishing the blower speed may likewise comprise an optical waveguide. In one embodiment, signal lines 12 and 13 take the form of optical waveguides. Optical waveguides offer advantages in terms of electrical insulation and explosion protection.
If an air supply is provided via an air damper and/or valve, the damper and/or valve position may be used as a measure of the air supply. Measurements derived from signals from mass flow sensors and/or volume flow sensors may also be used. The sensor is advantageously arranged in a duct for the air supply 5. The sensor advantageously provides a signal which is converted into a measured flow value with the aid of a suitable signal processing unit. The signal processing facility desirably comprises at least one analog-to-digital converter. According to one embodiment, the signal processing facility, in particular the analog-to-digital converter(s), is integrated into the closed-loop and/or open-loop control and/or monitoring facility 18. In another embodiment, the analog-to-digital converter(s) are integrated into the flow and/or pressure sensor 10.
Measurements from pressure sensors and/or mass flow sensors in the side ducts may also be used as a measure of the air supply V L. A combustion apparatus with supply and side ducts is disclosed, for example, in european patent EP3301364B 1. European patent EP3301364B1 was filed on 7.6.7 and was authorized on 7.8.7 of 2019. A combustion device having a supply line and a side line is claimed, wherein a mass flow sensor protrudes into the supply line.
The pressure sensor and/or mass flow sensor in the side duct establish a signal corresponding to a pressure value dependent on the air supply V L and/or the air flow (particle and/or mass flow rate) in the side duct. The sensor advantageously provides a signal which is converted into a measured value with the aid of suitable signal processing means. According to a further advantageous embodiment, signals from a plurality of sensors are converted into a common measurement value. Suitable signal processing means desirably comprise at least one analog to digital converter. According to one embodiment, the signal processing means, in particular the analog-to-digital converter(s), are integrated into the closed-loop and/or open-loop control and/or monitoring facility 18. In another embodiment, the analog-to-digital converter(s) are integrated into the flow and/or pressure sensor 10.
According to one embodiment, the air supply V L is the value of the current air flow rate. The air flow rate may be measured and/or expressed in cubic meters of air per hour. The air supply V L may be measured and/or expressed in cubic meters of air per hour.
Mass flow sensors allow measurements to be made at elevated flow rates, particularly in connection with operating combustion equipment. Typical values of such flow rates are in the range of 0.1 meter per second to 5 meters per second, 10 meters per second, 15 meters per second, 20 meters per second or even 100 meters per second. Mass flow sensors suitable for use in the present disclosure are, for exampleD6F-W or SENSORWBA type sensor. The usable range of these sensors typically starts at a speed of 0.01 meter per second to 0.1 meter per second and ends at a speed such as, for example, 5 meters per second, 10 meters per second, 15 meters per second, 20 meters per second or even 100 meters per second. In other words, a lower limit such as 0.1 meter per second may be combined with an upper limit such as 5 meters per second, 10 meters per second, 15 meters per second, 20 meters per second, or even 100 meters per second.
The fuel supply V B is set and/or regulated by the closed-loop and/or open-loop control and/or monitoring facility 18 with the aid of a fuel actuator and/or a (motor) settable valve. In the embodiment of fig. 1, the fuel 7 is a fuel gas. The combustion apparatus 1 may then be connected to various fuel gas sources, for example sources with a high methane content and/or sources with a high propane content. It is also assumed that the combustion device 1 is connected to a source of a gas or gas mixture, wherein the gas or gas mixture comprises hydrogen. In fig. 1, the volume of fuel gas is set by a closed and/or open loop control and/or monitoring facility 18 using (motor) settable fuel valves 6. The actuation value of the gas valve (e.g., a pulse width modulated signal) is a measure of the fuel gas volume. It is also the value of the fuel supply V B.
If a gas damper is used as the fuel actuator 6, the position of the damper can be used as a measure of the volume of the fuel gas. According to a specific embodiment, the fuel actuator 6 and/or the fuel valve are set by means of a stepper motor. In this case, the stepping position of the stepping motor is a measure of the volume of the fuel gas. The fuel valve may also be integrated in one unit with at least one or more safety shut-off valves. The signal line 14 connects the fuel actuator 6 to a closed and/or open loop control and/or monitoring facility 18. In one particular embodiment, signal line 14 includes an optical waveguide. Optical waveguides offer advantages in terms of electrical insulation and explosion protection.
The fuel valve 6 may furthermore be a valve which is controlled internally via a flow and/or pressure sensor 10 and which receives a setpoint value via a signal line 14. The actual value of the flow and/or pressure sensor 10 is then controlled to the set point value. The flow and/or pressure sensor 10 may be implemented as a volumetric flow sensor, such as a turbine meter or bellows meter (bellows meter) or a differential pressure sensor. The flow and/or pressure sensor 10 may also be implemented as a mass flow sensor, such as a thermal mass flow sensor. Signal and/or feedback lines 16 connect the internal control valves to closed and/or open loop control and/or monitoring facilities 18. In one particular embodiment, the signal and/or feedback lines 16 include optical waveguides. Optical waveguides offer advantages in terms of electrical insulation and explosion protection.
In a further embodiment, the flow and/or pressure sensor 10 is arranged separately from the fuel valve 6 in the fuel supply line 8. The flow sensor 10 may be implemented as a volumetric flow sensor, such as a turbine meter or a bellows meter or a differential pressure sensor. The flow and/or pressure sensor 10 may also be implemented as a mass flow sensor, such as a thermal mass flow sensor. Signal and/or feedback lines 16 connect the flow and/or pressure sensor 10 to closed and/or open loop control and/or monitoring facilities 18. In one particular embodiment, the signal and/or feedback lines 16 include optical waveguides. Optical waveguides offer advantages in terms of electrical insulation and explosion protection.
Each flow and/or pressure sensor 10 generates a signal which is converted with the aid of suitable signal processing means into a measured flow value (measurement of the particle and/or mass flow and/or volumetric flow rate). Suitable signal processing means desirably comprise at least one analog to digital converter. According to one embodiment, the signal processing means, in particular the analog-to-digital converter(s), are integrated into the closed-loop and/or open-loop control and/or monitoring facility 18. In another embodiment, the analog-to-digital converter(s) are integrated into the flow and/or pressure sensor 10.
In a combustion device 1 that burns hydrogen or hydrogen as part of a gas mixture, it is important to cool the supplies 5, 8 into the combustion chamber 2. The supplied cooling is of particular interest in the premix combustion apparatus 1. Adequate cooling of the supplies 5, 8 into the combustion chamber 2 reduces the risk of flashback.
In particular in the premix combustion device 1, the coating may be used for cooling the supply 5, 8 into the combustion chamber 2. The coating is applied on or near the mouths of the supplies 5, 8 entering the combustion chamber 2. The coating advantageously emits in the infrared range, i.e. wavelengths above 800 nm. In addition to emitting in the infrared wavelength range, the coating is also intended to be stable over long periods of time and to withstand typical temperatures. Thus, the coating may comprise a boron phosphide film. The coating may further comprise a diamond-like carbon film. The coating may in particular comprise an amorphous carbon film.
The supply 5, 8 may further comprise a tube made of a material with good thermal conductivity. The supplies 5, 8 may for example comprise copper or copper alloy tubes. In the premix combustion apparatus 1, the supplies 5, 8 may in particular comprise copper or copper alloy tubes at their mouths to the combustion chamber 2. Due to the good thermal conductivity, heat is dissipated from the mouths of the supplies 5, 8. The dissipation of heat ensures a better cooling of the mouth of the supply 5, 8 to the combustion chamber. Thus reducing the risk of tempering.
Fig. 1 likewise shows a combustion device 1 having a first combustion sensor 9 for detecting an air-fuel ratio λ. The first combustion sensor 9 may for example comprise a first ionization electrode. The first combustion sensor 9 may also be a first ionization electrode.For exampleOr (b)Are often used as the material for the ionization electrode. Those skilled in the art are also contemplated byAnd (5) a manufactured electrode. The first combustion sensor 9 is preferably arranged in the combustion chamber 2.
The signal line 15 connects the first combustion sensor 9 to a closed-loop and/or open-loop control and/or monitoring facility 18. In one particular embodiment, signal line 15 includes an optical waveguide. Optical waveguides offer advantages in terms of electrical insulation and explosion protection.
Fig. 1 furthermore shows a combustion device 1 having a second sensor 11 (for example a second combustion sensor 11) for detecting an air-fuel ratio λ. The second sensor 11 may for example comprise a second ionization electrode. The second sensor 11 may also be a second ionization electrode.For exampleOr (b)Are often used as the material for the ionization electrode. Those skilled in the art are also contemplated byAnd (5) a manufactured electrode. The second sensor 11 is preferably arranged in the combustion chamber 2.
A signal line and/or feedback line 17 connects the second sensor 11 to a closed-loop and/or open-loop control and/or monitoring facility 18. In a specific embodiment, the signal and/or feedback lines 17 comprise optical waveguides. Optical waveguides offer advantages in terms of electrical insulation and explosion protection.
The first combustion sensor 9 and the second sensor 11 are preferably arranged in the same combustion chamber 2. Provision is made for the first combustion sensor 9 to be different from the second sensor 11. For example, the first combustion sensor 9 and the second sensor 11 may be arranged in the same combustion chamber 2 and at least 100 mm apart from each other. In a further embodiment, the first combustion sensor 9 and the second sensor 11 may be arranged in the same combustion chamber 2 and at least 200 mm from each other. The first combustion sensor 9 and the second sensor 11 may also be arranged in the same combustion chamber 2 and at least 500 mm from each other. The greatest possible distance between the first combustion sensor 9 and the second combustion sensor 11 yields advantages with regard to decoupling of the signals from the two combustion sensors 9 and 11.
It is also conceivable to check the combustion sensor 9, 11 periodically for changes by means of testing. For example, the ionization electrode should be checked for aging. The examination may be performed as disclosed in patents EP2466204B1 and EP 3045816. European patent EP2466204B1"Regulating device for a burner assembly (burner assembly adjustment device)" was granted on 11/13 2013. The corresponding application EP2466204A1 was published on month 6 and 20 of 2012. European patent EP3045816B1"Device for the control ofaburner assembly (apparatus for control of burner assemblies)" was granted 12 months 12 days 2018. The corresponding application EP3045816A1 was published in 2016, 7 and 20.
This check is applied to control the combustion sensors 9, 11. The control combustion sensor 9, 11 may for example comprise a first ionization electrode. To identify a change of the second sensor 11, 9, the system is briefly controlled to a newly calculated setpoint value after the test. The second sensor 11, 9 may for example comprise a second ionization electrode. As soon as the controller enters a steady state, the actual value at the second combustion sensor 11, 9 is taken as a new check value.
The first combustion sensor 9 is preferably connected to a voltage source via a first impedance and the second sensor 11 is connected to the same voltage source via a second impedance. The first impedance is separated from the second impedance. In another embodiment, the first combustion sensor 9 is connected to a first voltage source and the second sensor 11 is connected to a second voltage source. The first voltage source is separated from the second voltage source. The first voltage source is desirably different from the second voltage source.
In one embodiment, the first combustion sensor 9 comprises a first ionization electrode and the second sensor 11 comprises a second ionization electrode. The first ionizing electrode is defined to be different from the second ionizing electrode. The first and second ionizing electrodes are preferably arranged in the same combustion chamber 2. For example, the first and second ionizing electrodes may be arranged in the same combustion chamber 2 and at least 100 mm from each other. In further embodiments, the first and second ionizing electrodes may be arranged in the same combustion chamber 2 and at least 200 mm from each other. The first and second ionizing electrodes may also be arranged in the same combustion chamber 2 and at least 500 mm from each other. The greatest possible spacing between the first and second ionizing electrodes yields advantages with respect to decoupling of the signals from the two ionizing electrodes.
The first ionizing electrode is preferably connected to a voltage source via a first impedance and the second ionizing electrode is connected to the same voltage source via a second impedance. The first impedance is separated from the second impedance. In another embodiment, the first ionization electrode is connected to a first voltage source and the second ionization source is connected to a second voltage source. The first voltage source is separated from the second voltage source. The first voltage source is desirably different from the second voltage source.
In one embodiment, the first combustion sensor 9 is a first ionization electrode and the second sensor 11 is a second ionization electrode. The first ionizing electrode is defined to be different from the second ionizing electrode. The first and second ionizing electrodes are preferably arranged in the same combustion chamber 2. For example, the first and second ionizing electrodes may be arranged in the same combustion chamber 2 and at least 100 mm from each other. In further embodiments, the first and second ionizing electrodes may be arranged in the same combustion chamber 2 and at least 200 mm from each other. The first and second ionizing electrodes may also be arranged in the same combustion chamber 2 and at least 500 mm from each other. The greatest possible spacing between the first and second ionizing electrodes yields advantages with respect to decoupling of the signals from the two ionizing electrodes.
The first ionizing electrode is preferably connected to a voltage source via a first impedance and the second ionizing electrode is connected to the same voltage source via a second impedance. The first impedance is separated from the second impedance. In another embodiment, the first ionization electrode is connected to a first voltage source and the second ionization source is connected to a second voltage source. The first voltage source is separated from the second voltage source. The first voltage source is desirably different from the second voltage source.
Fig. 2 shows by way of example the setpoint ionization current values 20 of the first gas 21 and the second gas 22 plotted against the air supply or blower speed or power 19. For example, the curve 21 consists of the setpoint ionization current value 20 of the first combustion sensor 9 of the first fuel and/or the first fuel gas at λ=λ setpoint. Curve 22 consists of the setpoint ionization current value 20 of the first combustion sensor 9 of the second fuel and/or the second fuel gas at λ=λ setpoint. The first fuel and/or the first fuel gas may have a lambda setpoint different from a lambda setpoint of the second fuel and/or the second fuel gas. Furthermore, lambda setpoint plotted against air supply or blower speed or power may be varied in a predefined manner. For any second combustion sensor 11 that may be present, two other curves of set point ionization current values 20 are plotted for the first and second gases relative to the air supply or blower speed or power 19. The two curves 21 and 22 define a bundle of curves. The fuel mixture may be estimated based on signals from the flow and/or pressure sensor 10 and/or based on feedback from the fuel actuator 6 and/or by signals from the sensors 9, 11. The fuel mixture may be a gaseous mixture. According to one embodiment, a fuel mixture, such as, for example, a gas mixture, may be identified based on signals from the flow and/or pressure sensor 10. Based on feedback from the fuel actuator 6 and/or based on signals from the sensors 9, 11, 10, a fuel mixture, such as for example a gas mixture, may be further identified. The fuel mixture, for example a gas mixture, comprises a mixture of a first gas 21 and a second gas 22. The fuel mixture, for example a gas mixture, desirably consists of a mixture of a first gas 21 and a second gas 22. The proportion of the second gas 22 is preferably slightly higher. For example, the proportion of the second gas 22 may be less than five percent by mass higher than the proportion of the first gas 21. The proportion of the second gas 22 may likewise be less than ten percent by mass higher than the proportion of the first gas 21. The proportion of the second gas 22 may also be less than twenty mass percent higher than the proportion of the first gas 21. Finally, the proportion of the second gas 22 may also be greater than 90 mass% higher than the proportion of the first gas 21. Furthermore, the proportion of the second gas 22 may be less than five percent by volume higher than the proportion of the first gas 21. The proportion of the second gas 22 may likewise be less than ten percent by volume higher than the proportion of the first gas 21. The proportion of the second gas 22 may also be less than twenty percent by volume higher than the proportion of the first gas 21. Finally, the proportion of the second gas 22 may also be greater than 90 percent by volume higher than the proportion of the first gas 21.
The two associated curves 21 and 22 of the gas are weighted with this evaluation and the third curve 23 in fig. 2 is obtained. These ionization currents are preferably used as setpoint values as a basis for control until another evaluation is available. This means that if a rapid modulation occurs after the evaluation, the control is effected with the aid of the setpoint control value corresponding to the curve 23. When a steady or quasi-steady state is reached, a new evaluation is made. From the result of the evaluation, a new curve 23 with setpoint control values is determined. This determination may be made, for example, by closed-loop and/or open-loop control and/or monitoring of facility 18. Based on the result of the evaluation, a new curve 23 with setpoint control values is preferably calculated. The calculation may be performed, for example, by closed-loop and/or open-loop control and/or monitoring facilities 18.
Fig. 3 shows ionization current curves 25 plotted against the air-fuel ratio λ24 for two different positions of the combustion sensor 9, 11 and two different fuels 7. The two different fuels 7 may be two different gases and are not required to be exhaustive. The two different fuels 7 may be two different gas mixtures and are not required to be exhaustive. The representation in fig. 3 relates to a specified air supply or blower speed or power 19. The representation in fig. 3 preferably relates to a constant air supply or blower speed or power 19. In one embodiment, at least one of the combustion sensors 9, 11 comprises an ionization electrode. In a specific embodiment, each of the combustion sensors 9, 11 comprises an ionization electrode. However, the embodiment in fig. 3 does not mean that the first and second gases must be controlled to the same air-fuel ratio λ. The setpoint value of the air-fuel ratio lambda nominal of the first gas may deviate from the setpoint value of the air-fuel ratio lambda setpoint of the second gas. The embodiment in fig. 3 further does not mean that the first and second fuel needs have to be controlled to the same air-fuel ratio lambda. The setpoint value of the air-fuel ratio lambda nominal of the first fuel may deviate from the setpoint value of the air-fuel ratio lambda setpoint of the second fuel.
Two lines 30a and 30b intersect curves 26 to 29. This indicates the set point value of the ionization current of the first and second gases at the sensors 9, 11. The two lines 30a and 30b preferably indicate set point values of ionization current at the combustion sensors 9 and 11. The two lines 30a and 30b desirably indicate set point values of the ionization current at the ionization electrodes 9 and 11. At the intersection with lines 26 and 28, line 30b indicates the set point value of the ionization current of the first gas at sensors 9 and 11. The intersection of line 30b with line 26 is a point on curve 21 in fig. 2. The intersection of line 30b with line 27 is a point on line 22 in fig. 2. At the intersection with lines 27 and 29, line 30a indicates the set point value of the ionization current of the second gas at sensors 9 and 11.
Meanwhile, vertical lines 30a and 30b illustrate the spacing between ionization currents at the sensors 9, 11 relative to the air-fuel ratio λ setpoint to be controlled. The sensors 9, 11, in particular the ionization electrodes 9, 11, generate different ionization currents due to their different positions in the combustion chamber 2.
It is initially assumed that control is exercised over the sensors 9, 11 corresponding to the curves 26 and 27. The sensor 9, 11 is in position one. The sensors 11, 9 corresponding to the curves 28 and 29 are therefore used to check whether the correct fuel 7 has been evaluated. In particular, the sensors 11, 9 corresponding to the curves 28 and 29 can be used to check whether the correct fuel 7 has been identified. The sensors 11, 9 for inspection purposes are located in the combustion chamber 2 in position two. The second position in the combustion chamber 2 is different from the first position in the combustion chamber 2.
In one embodiment, it is assumed that control is exercised over the ionizing electrodes 9, 11 corresponding to curves 26 and 27. The ionization electrode 9, 11 is located at a first position in the combustion chamber 2. The ionization electrodes 11, 9 corresponding to the curves 28 and 29 are therefore used to check whether the correct fuel 7 has been evaluated. In particular, the ionization electrodes 11, 9 corresponding to the curves 28 and 29 can be used to check whether the correct fuel 7 has been identified. The ionization electrode 11, 9 for inspection purposes is located in the combustion chamber 2 at position two. The second position in the combustion chamber 2 is different from the first position in the combustion chamber 2.
Assuming the presence of the first fuel 7, control is exercised over the curve 21 from fig. 2. The current air supply or blower speed or power may correspond to the air supply or blower speed or power in fig. 3. In this case, the setpoint control value corresponds to the intersection of line 30b with curve 26. A signal according to the curve 28 intersecting the line 30b should appear at the second sensor 11, 9. In particular, an ionization current according to the curve 28 intersecting the line 30b should occur at the second sensor 11, 9. Ideally, an ionization current according to curve 28 at the intersection with line 30b should appear at the second ionization electrode 11, 9.
If the second fuel 7 is actually to be supplied to the combustion device 1, control is initially still exercised over the same setpoint value I setpoint of the ionization current. At the same time, the air-fuel ratio λ shifts along curve 27 toward higher values of air-fuel ratio λ. This continues until the actual value I ACTUAL of the ionization current is equal to the set point value I setpoint of the ionization current. Only at the air-fuel ratio λ as indicated by the vertical line 31 will the same ionization current according to the curve 27 occur at the first combustion sensor 9, 11. At the same time, the difference in ionization current between the sensors 9, 11 at positions 1 and 2 changes. Preferably, the difference in ionization current between the ionization electrodes 9, 11 at positions 1 and 2 is changed. In this case, the difference even changes its sign. A difference is now obtained corresponding to the intersection of the vertical line 31 with the curves 29 and 27. In contrast, a difference corresponding to the intersection of curve 30b with curves 28 and 26 is contemplated for fuel 1.
A change in the difference in ionization current between the sensors 9, 11 results in a change in the set point value I setpoint of the ionization current towards the second gas at λ setpoint. The change is preferably effected by a controller. In particular, the difference in the change in ionization current may cause the controller to change the set point control value at λ setpoint to the value of curve 27 for the second gas. Once the changed setpoint control value is adjusted, the ionization current corresponding to curve 29 at λ setpoint will appear at sensors 11, 9 at position 2. The closed-loop and/or open-loop control and/or monitoring facility 18 preferably changes the set point value I setpoint of the ionization current.
In one embodiment, the difference in the change in ionization current between the ionization electrodes 9,11 causes the controller to change the setpoint control value at the lambda setpoint toward the second gas. In particular, the difference in the change in ionization current may cause the controller to change the set point control value at λ setpoint to the value of curve 27 for the second gas. Once the changed setpoint control value is adjusted, the ionization current corresponding to position two of fuel two at λ setpoint will appear at the ionization electrode 11, 9 at position two.
In this case, the closed-loop and/or open-loop control and/or monitoring facility 18 preferably increases the setpoint control value.
The opposite case-setpoint control value at fuel two but fuel one present-is also identified. In this case, in the case where control is exercised over the set point value I setpoint of the ionization current, at the set point value λ setpoint of the air-fuel ratio of the fuel two, the air-fuel ratio λ will change. The change occurs towards λ=1. I setpoint of lambda setpoint of fuel two corresponds to the intersection of curve 27 with line 30 a. This change continues until the air-fuel ratio λ indicated by the vertical line 32. This drift of the air-fuel ratio λ is accompanied by a change in the amount of difference between the two ionization currents. In an exemplary case, the drift of the air-fuel ratio λ to λ=1 is accompanied by an increase in the amount of difference between the two ionization currents. This amount corresponds to the spacing of the intersection of curve 32 with curves 26 and 28. This amount is significantly different from the expected amount of fuel two corresponding to the spacing of the intersection of curve 30a with curves 27 and 29. This now causes the controller to decrease the set point value I setpoint of the first ionization current toward the first fuel at the set point value λ setpoint of the air-to-fuel ratio. Thus, the air-fuel ratio set point value λ setpoint of fuel 1 is returned.
Obviously, in each case, the two fuels may have different graphs of the difference in the air-fuel ratio λ. The controller is preferably parametrizable so as to be able to control the ionization current curves associated with the two combustion sensors 9, 11 and the two fuels. The parameterization may specify when the provided response increases and when the set point value I setpoint of the ionization current decreases. In particular, the parameterization may specify when the provided response increases and when the set point value I setpoint of the ionization current decreases.
Instead of differences, other mathematical relationships between the signals from the combustion sensors 9, 11 may be used as a basis for control.
The behavior of the ionization currents with respect to each other may vary with the air supply or blower speed or power 19. For example, in the case where the first air supply or blower speed or power and control is fuel once fuel two is present, the difference in ionization current from the sensors 9, 11 increases. In the case of a second air supply or blower speed or power, the difference in ionization current decreases. Although the setpoint control value must in any case be truly adapted to the second fuel if the air is to be properly adjusted to the fuel, the adaptation occurs at the first air supply or blower speed or power 19 due to the difference in rise. In the case of the second air supply or blower speed or power 19, the adaptation takes place based on the reduced difference in ionization current from the sensors 9, 11.
In those cases, the set point ionization current value I setpoint (of the first sensor 9, 11) may change rapidly. The set point ionization current value I setpoint varies faster than the fastest and/or fastest variation of the fuel composition. The controller thus varies the set point value I setpoint by an amount. This means that the controller changes the set point value I setpoint by an amount until the second sensor 11, 9 reports back the matching actual value. In particular, the controller varies the set point value I setpoint by an amount until the second sensor 11, 9 reports back a matching actual value corresponding to one of the possible fuel mixtures.
In the fuel mixture covered by the I setpoint change, the values of the second sensors 11, 9 are expected at I setpoint of the first sensors 9, 11. The values of the second sensors 11, 9 are expected to be λ=λ setpoint. This is the actual value of the match.
If the second sensor 11, 9 and/or the second ionization electrode 11, 9 does not report back a matching actual value, the entire range of setpoint ionization current values I setpoint may be traversed. The entire range of the setpoint value I setpoint is the range of I setpoint that occurs when the desired fuel mixture is burned in the combustion device 1 with the set air supply. The corresponding considerations apply to the blower speed or power 19 rather than the air supply. In particular, the entire range of the set point value I setpoint is a range that occurs when the desired fuel mixture having the set point value λ setpoint of the air-fuel ratio is combusted.
The closed-loop and/or open-loop control and/or monitoring facility 18 preferably varies the setpoint value I setpoint. The closed-loop and/or open-loop control and/or monitoring facility 18 preferably traverses the entire range of set point values I setpoint of the ionization current. The closed and/or open loop control and/or monitoring facility 18 traverses the entire range of setpoint values I setpoint that may occur when burning the desired fuel mixture. In particular, at a set air supply or blower speed or power 19, the entire range of the set point value I setpoint of the ionization current at the set point value λ setpoint of the air-fuel ratio is traversed.
Alternatively, instead of the change occurring via the ionization current and the setpoint value I setpoint of the controller, it can be performed directly as a change of the fuel actuator 6. For this purpose, the fuel actuator position may change rapidly. The fuel actuator position is preferably rapidly changed by an amount. The controller accordingly establishes when the actual value of ionization current at the first and second combustion sensors 9, 11 is indicative of the same fuel mixture. After adjustment, both ionization currents are matched to the fuel mixture within the range of the intended mixture in the combustion device 1.
It may happen that no matching of ionization current from the first combustion sensor 9 to the second combustion sensor 11 is found when changing the fuel actuator 6. In particular, it may happen that at small changes of the fuel actuator 6 no matching of the ionization current from the first sensor 9 to the second sensor 11 is found. In this case, the amount of change may extend. For the highest heating value fuel, the amount of change extends up to the minimum fuel actuator position. For the lowest heating value fuel, the amount of change also extends up to the maximum fuel actuator position. The change in fuel actuator position is a function of the air supply or blower speed or power 19 set. The change in fuel actuator position is desirably a function of the current set air supply or blower speed or power 19.
Portions of the closed-loop and/or open-loop control and/or monitoring facility 18 and/or methods according to the present disclosure may be implemented as hardware and/or software modules. The software modules are herein executed by a computing unit optionally including container virtualization. Further options are performed with the aid of a cloud computer and/or with the aid of a combination of the above options. The software may include firmware and/or hardware drivers executing in an operating system and/or container virtualization and/or application programs. Accordingly, the present disclosure also relates to a computer program product comprising the features of the present disclosure or performing the necessary steps. In the case of a software implementation, the functions described may be stored on a computer readable medium as one or more commands. Some examples of computer readable media include Random Access Memory (RAM) and/or Magnetic Random Access Memory (MRAM) and/or Read Only Memory (ROM) and/or flash memory and/or Electrically Programmable ROM (EPROM). Some additional examples of computer readable media include Electrically Erasable Programmable ROM (EEPROM) and/or computing unit registers and/or hard disk and/or interchangeable memory units. Computer-readable media further includes optical storage and/or any suitable medium accessible by a computer or other IT device and application.
In other words, the present disclosure teaches a method for controlling a combustion apparatus (1), the combustion apparatus (1) comprising a first combustion sensor (9) and a second sensor (10, 11), wherein the second sensor (10, 11) is different from the first combustion sensor (9), the method comprising the steps of:
designating a first setpoint value for a signal from a first combustion sensor (9) for a first fuel (7);
Controlling the combustion device (1) by means of a first combustion sensor (9) to a first setpoint value of a signal from the first combustion sensor (9);
recording a first signal from a first combustion sensor (9);
recording a second signal from a second sensor (10, 11);
determining a second fuel (7) as a function of the first signal and as a function of the second signal;
comparing the first fuel (7) with the second fuel (7) in terms of composition of the fuels (7);
if the second fuel 7 has a different composition than the first fuel 7:
Determining a second setpoint value of the signal from the first combustion sensor (9) as a function of the second fuel (7); and
The combustion device (1) is controlled by means of the first combustion sensor (9) to a second setpoint value of the signal from the first combustion sensor (9).
The above-described method for controlling the combustion apparatus (1) may be a method for operating the combustion apparatus (1).
The present disclosure teaches a method for controlling a combustion apparatus (1), the combustion apparatus (1) comprising a first combustion sensor (9) and a second sensor (10, 11), wherein the second sensor (10, 11) is different from the first combustion sensor (9), the method comprising the steps of:
designating a first setpoint value for a signal from a first combustion sensor (9) for a first fuel (7);
Controlling the combustion device (1) by means of a first combustion sensor (9) to a first setpoint value of a signal from the first combustion sensor (9);
recording a first signal from a first combustion sensor (9);
recording a second signal from a second sensor (10, 11);
determining a second fuel (7) as a function of the first signal and as a function of the second signal;
comparing the first fuel (7) with the second fuel (7) in terms of composition of the fuels (7);
If the second fuel (7) has a different composition than the first fuel (7):
determining a second setpoint value of the signal from the first combustion sensor (9) on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7); and
The combustion device (1) is controlled by means of the first combustion sensor (9) to a second setpoint value of the signal from the first combustion sensor (9).
In one embodiment, the combustion apparatus (1) comprises a combustion chamber (2), and the first combustion sensor (9) is a first ionizing electrode in the combustion chamber (2). The first setpoint value of the signal from the first combustion sensor (9) is preferably a first setpoint value of the ionization current from the first ionization electrode. The first signal recorded from the first combustion sensor (9) is preferably a first ionization current. The method therefore includes the step of registering a first ionization current from the first ionization electrode.
In one embodiment, the combustion device (1) comprises a combustion chamber (2), and the second sensor (10, 11) is a second ionization electrode in the combustion chamber (2). The second signal recorded from the second sensor (10, 11) is preferably a second ionization current. The method therefore includes the step of registering a second ionization current from a second ionization electrode.
In another embodiment, the combustion device (1) comprises a fuel supply conduit (8), and the second sensor (10, 11) is a flow sensor for registering a flow of the first or second fuel (7) through the fuel supply conduit (8). In particular, a second sensor (10, 11) in the form of a flow sensor can extend into the fuel supply line (8). A second sensor (10, 11) in the form of a flow sensor may also be arranged in the fuel supply conduit (8). A second sensor (10, 11) in the form of a flow sensor may be further fixed to the fuel supply conduit (8). The second sensor (10, 11) in the form of a flow sensor can furthermore be mechanically fixed to the fuel supply line (8), for example by spot welding and/or paint and/or adhesive. The method therefore comprises the step of recording a second signal from the flow sensor in the form of a flow signal through the fuel supply conduit (8).
In another embodiment, the combustion apparatus (1) comprises a fuel supply conduit (8) and the second sensor (10, 11) is configured to detect a valve and/or damper position. The valve and/or damper position is a measure of the fuel flow (7) through the fuel supply conduit (8). The method thus comprises the step of recording a flow signal from the second sensor (10, 11) in the form of a valve and/or damper position through the fuel supply line (8).
In a first embodiment, the first fuel (7) is of a first fuel type and the second fuel is of a second fuel type (7). The first fuel (7) may also be of a first fuel type and the second fuel (7) may be of a second fuel type.
The present disclosure also teaches one of the above methods comprising the steps of:
a first setpoint value of the signal from the first combustion sensor (9) is specified.
Furthermore, the present disclosure teaches one of the above methods comprising the steps of:
a setpoint value specifying an air-fuel ratio lambda of the first fuel (7); and
A first setpoint value of the signal from the first combustion sensor (9) is determined on the basis of a setpoint value of the air-fuel ratio lambda of the first fuel (7).
The present disclosure also teaches one of the above methods comprising the steps of:
the second fuel (7) is determined as an exclusive function of the first signal and as a function of the second signal.
The exclusive function only accounts for the arguments of the function.
The present disclosure further teaches one of the above methods comprising the steps of:
A first setpoint value of the signal from the first combustion sensor (9) is determined as a function of the current air supply or blower speed or power and by means of a stored profile of the first fuel (7).
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises a non-volatile memory, the method comprising the steps of:
A first setpoint value of the signal from the first combustion sensor (9) is determined by means of the current air supply or blower speed or power and by means of a profile of the first fuel (7) stored in the non-volatile memory.
The present disclosure furthermore teaches one of the above methods, wherein the combustion apparatus (1) comprises a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, the method comprising the steps of:
the first setpoint value of the signal from the first combustion sensor (9) is determined by means of the current air supply of the first fuel (7) or the blower speed or power and by means of a profile of the first fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above methods comprising the steps of:
a first setpoint value of the signal from the first combustion sensor (9) is determined by means of a stored profile of the first fuel (7) on the basis of the setpoint value of the air-fuel ratio lambda of the first fuel (7).
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises a non-volatile memory, the method comprising the steps of:
A first setpoint value of the signal from the first combustion sensor (9) is determined on the basis of a setpoint value of the air-fuel ratio lambda of the first fuel (7) by means of a profile of the first fuel (7) stored in a non-volatile memory.
The present disclosure furthermore teaches one of the above methods, wherein the combustion apparatus (1) comprises a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, the method comprising the steps of:
The first setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the first fuel (7) by means of a profile of the first fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
For the above-described method steps of determining the first setpoint value of the signal from the first combustion sensor (9), a table or corresponding means for determining the first setpoint value, such as, for example, a mathematical relationship or a program sequence, can be considered in addition to the saved curve.
The method for operating a combustion device (1) preferably comprises the steps of:
the second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of one or more tables stored in the non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure further teaches one of the above methods comprising the steps of:
by means of the stored mathematical relationship, the second fuel (7) is determined as a function of the first signal and as a function of the second signal.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a mathematical relationship stored in the non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
the second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure further teaches one of the above methods comprising the steps of:
the second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a program sequence stored in the closed-loop and/or open-loop control and/or monitoring unit (18).
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure further teaches one of the above methods comprising the steps of:
determining a first difference between the first and second signals; and
The first difference is assigned to the second fuel (7).
The method for operating a combustion device (1) preferably comprises the steps of:
The first difference is assigned to the second fuel (7) by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
the first difference is assigned to the second fuel (7) by means of one or more tables stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The first difference is assigned to the second fuel (7) by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure further teaches one of the above methods comprising the steps of:
the first difference is assigned to the second fuel (7) by means of a stored mathematical relationship.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
the first difference is assigned to the second fuel (7) by means of a mathematical relationship stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
the first difference is assigned to the second fuel (7) by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure further teaches one of the above methods comprising the steps of:
the first difference is assigned to the second fuel (7) by means of a stored program sequence.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
The first difference is assigned to the second fuel (7) by means of a program sequence stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The first difference is assigned to the second fuel (7) by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above methods comprising the steps of:
Determining a first index as a function of the first signal and as a function of the second signal;
determining a first negative sign or a first positive sign of the first exponent; and
The second fuel (7) is determined as a function of the first index and as a function of the first negative sign or the first positive sign of the first index.
In one embodiment, the first index is a quotient of the first signal and the second signal. The first index may also be a function of the quotient of the first signal and the second signal. Further, it may be provided that the first index is the difference between the first signal and the second signal. It may also be provided that the first index is a function of the difference between the first signal and the second signal.
Furthermore, the present disclosure teaches one of the above methods comprising the steps of:
Determining a first difference between the first and second signals;
determining a first negative sign or a first positive sign of the first difference; and
The second fuel (7) is determined as a function of the first difference and as a function of a first negative sign or a first positive sign of the first difference.
Furthermore, the present disclosure teaches one of the above methods comprising the steps of:
determining a first spacing between the first and second signals; and
A second fuel (7) is determined as a function of the first spacing.
The present disclosure also teaches one of the above methods comprising the steps of:
a setpoint value for specifying an air-fuel ratio lambda of the second fuel (7); and
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7).
Furthermore, the present disclosure teaches one of the above methods comprising the steps of:
determining a setpoint value for the air-fuel ratio lambda of the second fuel (7); and
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7).
The present disclosure further teaches one of the above methods comprising the steps of:
By means of a stored profile of the second fuel (7), a second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the current air supply or blower speed or power.
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises a non-volatile memory, the method comprising the steps of:
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of a certain or current air supply or blower speed or power by means of a profile of a second fuel (7) stored in a non-volatile memory.
The present disclosure furthermore teaches one of the above methods, wherein the combustion apparatus (1) comprises a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, the method comprising the steps of:
the second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of a certain or current air supply of the first fuel (7) or blower speed or power by means of a profile of the second fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure further teaches one of the above methods comprising the steps of:
a second setpoint value of the signal from the first combustion sensor (9) is determined by means of a stored profile of the second fuel (7) on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7).
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises a non-volatile memory, the method comprising the steps of:
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of a setpoint value of the air-fuel ratio lambda of the second fuel (7) by means of a profile of the second fuel (7) stored in the non-volatile memory.
The present disclosure furthermore teaches one of the above methods, wherein the combustion apparatus (1) comprises a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, the method comprising the steps of:
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7) by means of a profile of the second fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
For the above-described method steps of determining the second setpoint value of the signal from the first combustion sensor (9), a table or equivalent means of action may be considered in addition to the stored curve. Equivalent means for determining the second setpoint value are, for example, mathematical relationships or program sequences.
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises an air supply duct and a fuel supply duct (8) and at least one actuator (4; 6), wherein the at least one actuator (4; 6) acts on at least one duct selected from the air supply duct and the fuel supply duct (8), the method comprising the steps of:
The combustion device (1) is controlled by means of at least one actuator (4; 6) and by means of a first combustion sensor (9) to a first setpoint value of a signal from the first combustion sensor (9).
Preferably each duct, the combustion device (1) comprises at least one actuator (4, 6).
In one embodiment, at least one actuator (4; 6) acts on the air supply duct and comprises a blower (4), in particular a motor-driven blower. In particular, the control can be performed by means of a pulse width modulated signal which is directed to the motor-driven blower (4). Furthermore, the control can be performed by means of signals from an inverter, wherein the signals from the inverter are led to a motor-driven blower (4). In a further embodiment, at least one actuator (4; 6) acts on the air supply conduit and comprises an air damper, in particular a motor-adjustable air damper. In particular, the control may be performed by means of a pulse width modulated signal which is directed to the motor-adjustable air damper. Furthermore, the control may be performed by means of a signal from an inverter, wherein the signal from the inverter is led to an air damper, which is adjustable by the motor. Control may also be provided by means of a signal of 0 to 20 milliamps or 0 to 10 volts without any exhaustive requirement. Control by a stepper motor is also possible.
The at least one actuator (4; 6) can further act on the fuel supply line (8) and comprises a valve, in particular a motor-adjustable valve. In particular, the control may be performed by means of a pulse width modulated signal, which is directed to the motor adjustable valve. Furthermore, the control may be performed by means of a signal from an inverter, wherein the signal from the inverter is led to the motor adjustable valve. The at least one actuator (4; 6) can furthermore act on a fuel supply line (8) and comprises a fuel damper, in particular a motor-adjustable fuel damper. In particular, the control may be performed by means of a pulse width modulated signal which is directed to the motor-adjustable fuel damper. Furthermore, the control may be performed by means of a signal from an inverter, wherein the signal from the inverter is led to a motor-adjustable fuel damper. Control may also be provided by means of a signal of 0 to 20 milliamps or 0 to 10 volts without any exhaustive requirement. Control by a stepper motor is also possible.
The present disclosure furthermore teaches one of the above methods, wherein the combustion apparatus (1) comprises an air supply duct and a fuel supply duct (8) and at least one actuator (4; 6), wherein the at least one actuator (4; 6) acts on at least one duct selected from the air supply duct and the fuel supply duct (8), the method comprising the steps of:
The combustion device (1) is controlled by means of at least one actuator (4; 6) and by means of a first combustion sensor (9) to a second setpoint value of the signal from the first combustion sensor (9).
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises an air supply duct and a fuel supply duct (8) and at least one actuator (4; 6), wherein the at least one actuator (4; 6) acts on at least one duct selected from the air supply duct and the fuel supply duct (8), the method comprising the steps of:
changing the position of at least one actuator (4; 6);
After changing the position of the at least one actuator (4; 6), a third signal from the first combustion sensor (9) is recorded;
-after changing the position of the at least one actuator (4; 6), recording a fourth signal from the second sensor (10, 11);
determining a third fuel (7) as a function of the third signal and as a function of the fourth signal;
comparing the first fuel (7) with the third fuel (7) in terms of composition of the fuels (7);
if the first fuel 7 has a different composition than the third fuel 7:
Determining a third setpoint value of the signal from the first combustion sensor (9) as a function of the third fuel (7); and
The combustion device (1) is controlled by means of the first combustion sensor (9) to a third setpoint value of the signal from the first combustion sensor (9).
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises an air supply duct and a fuel supply duct (8) and at least one actuator (4; 6), wherein the at least one actuator (4; 6) acts on at least one duct selected from the air supply duct and the fuel supply duct (8), the method comprising the steps of:
changing the position of at least one actuator (4; 6);
After changing the position of the at least one actuator (4; 6), a third signal from the first combustion sensor (9) is recorded;
-after changing the position of the at least one actuator (4; 6), recording a fourth signal from the second sensor (10, 11);
determining a third fuel (7) as a function of the third signal and as a function of the fourth signal;
comparing the first fuel (7) with the third fuel (7) in terms of composition of the fuels (7);
If the first fuel 7 and the third fuel 7 have different compositions:
determining a third setpoint value of the signal from the first combustion sensor (9) as a function of the setpoint value of the air-fuel ratio lambda of the second fuel (7); and
The combustion device (1) is controlled by means of the first combustion sensor (9) to a third setpoint value of the signal from the first combustion sensor (9).
The combustion device (1) preferably comprises an adjustable actuator (4; 6).
At one point in time, the third fuel (7) is the same as the second fuel (7). At another point in time, the third fuel (7) is different from the second fuel (7).
The method for operating a combustion device (1) preferably comprises the steps of:
the third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
the third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of one or more tables stored in the non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
the third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method for operating a combustion device (1) preferably comprises the steps of:
by means of the stored mathematical relationship, a third fuel (7) is determined as a function of the third signal and as a function of the fourth signal.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
the third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a mathematical relationship stored in the non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method for operating a combustion device (1) may further comprise the steps of:
A third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of the stored program sequence.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
The third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a program sequence stored in the non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above methods comprising the steps of:
determining a second difference between the third and fourth signals; and
A third fuel (7) is determined as a function of the second difference.
The method of operating the combustion device (1) with the inclusion of the third fuel (7) preferably comprises the steps of:
A third fuel (7) is determined as a function of the second difference by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of a third fuel (7) comprises the steps of:
The third fuel (7) is determined as a function of the second difference by means of one or more tables stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of the third fuel (7) may comprise the steps of:
The third fuel (7) is determined as a function of the second difference by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method of operating the combustion device (1) with the inclusion of the third fuel (7) preferably comprises the steps of:
By means of the stored mathematical relationship, a third fuel (7) is determined as a function of the second difference.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of a third fuel (7) comprises the steps of:
the third fuel (7) is determined as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of the third fuel (7) may comprise the steps of:
The third fuel (7) is determined as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method for operating a combustion device (1) may further comprise the steps of:
the third fuel (7) is determined as a function of the second difference by means of the stored program sequence.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
the third fuel (7) is determined as a function of the second difference by means of a program sequence stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
The third fuel (7) is determined as a function of the second difference by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure furthermore teaches one of the above methods in the case of containing a third fuel (7), the method comprising the steps of:
Determining a first index as a function of the first signal and as a function of the second signal;
Determining a second index as a function of the third signal and as a function of the fourth signal; and
A third fuel (7) is determined as a function of the first index and as a function of the second index.
In one embodiment, the second exponent is a quotient of the third signal and the fourth signal. The second index may also be a function of the quotient of the third signal and the fourth signal. Further, it may be provided that the second index is a difference of the third signal and the fourth signal. It may also be provided that the second index is a function of the difference of the third signal and the fourth signal.
The method for operating the combustion device (1) with the inclusion of the third fuel (7) preferably comprises the steps of:
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of a third fuel (7) comprises the steps of:
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of one or more tables stored in the non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of the third fuel (7) may comprise the steps of:
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method for operating the combustion device (1) with the inclusion of the third fuel (7) preferably comprises the steps of:
by means of the stored mathematical relationship, a third fuel (7) is determined as a function of the first index and as a function of the second index.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of a third fuel (7) comprises the steps of:
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of a mathematical relationship stored in the non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of the third fuel (7) may comprise the steps of:
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method for operating a combustion device (1) may further comprise the steps of:
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of the stored program sequence.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
the third fuel (7) is determined as a function of the first index and as a function of the second index by means of a program sequence stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
the third fuel (7) is determined as a function of the first index and as a function of the second index by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above methods in the case of containing a third fuel (7), the method comprising the steps of:
Determining a first difference between the first and second signals;
determining a second difference between the third and fourth signals; and
A third fuel (7) is determined as a function of the first difference and as a function of the second difference.
The method for operating the combustion device (1) with the inclusion of the third fuel (7) preferably comprises the steps of:
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of a third fuel (7) comprises the steps of:
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of one or more tables stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of the third fuel (7) may comprise the steps of:
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method for operating the combustion device (1) with the inclusion of the third fuel (7) preferably comprises the steps of:
by means of the stored mathematical relationship, a third fuel (7) is determined as a function of the first difference and as a function of the second difference.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of a third fuel (7) comprises the steps of:
the third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the method for operating the combustion device (1) with the inclusion of the third fuel (7) may comprise the steps of:
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The method for operating a combustion device (1) preferably comprises the steps of:
A third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of the stored program sequence.
The combustion device (1) desirably comprises a non-volatile memory, and the method for operating the combustion device (1) comprises the steps of:
the third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a program sequence stored in a non-volatile memory.
In particular, the combustion device (1) may comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with non-volatile memory, and the method for operating the combustion device (1) may comprise the steps of:
the third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The disclosure furthermore teaches one of the above methods in the case of comprising a third fuel (7) and a second index, the method comprising the steps of:
determining a second negative sign or a second positive sign of the second exponent; and
The third fuel (7) is determined as a function of the second index and as a function of the second negative sign or the second positive sign of the second index.
The present disclosure furthermore teaches one of the above methods in the case of comprising a third fuel (7) and a second difference, the method comprising the steps of:
Determining a second negative sign or a second positive sign of the second difference; and
A third fuel (7) is determined as a function of the second difference and as a function of a second negative sign or a second positive sign of the second difference.
The present disclosure also teaches one of the above methods with the inclusion of a third fuel (7) and a second index and sign thereof, the method comprising the steps of:
the third fuel (7) is determined as a function of the first index and as a function of the second negative sign or the second positive sign of the second index.
The present disclosure furthermore teaches one of the above methods in the case of containing a third fuel (7), a second difference and a sign thereof, the method comprising the steps of:
The third fuel (7) is determined as a function of the first difference and as a function of the second negative sign or the second positive sign of the second difference.
The present disclosure also teaches one of the above methods in the case of containing a third fuel (7), the method comprising the steps of:
a setpoint value for the air-fuel ratio lambda of the third fuel (7) is specified; and
A third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7).
The present disclosure furthermore teaches one of the above methods in the case of containing a third fuel (7), the method comprising the steps of:
determining a setpoint value for the air-fuel ratio lambda of the third fuel (7); and
A third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7).
The present disclosure further teaches one of the above methods comprising the steps of:
By means of the stored profile of the third fuel (7), a third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7).
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises a non-volatile memory, the method comprising the steps of:
A third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7) by means of a profile of the third fuel (7) stored in the non-volatile memory.
The present disclosure also teaches one of the above methods, wherein the combustion apparatus (1) comprises a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, the method comprising the steps of:
The third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7) by means of a profile of the third fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
For the above-described method steps of determining the third setpoint value of the signal from the combustion sensor (9), a table or corresponding means for determining the third setpoint value, such as, for example, a mathematical relationship or a program sequence, can be considered in addition to the saved curve.
The present disclosure also teaches a computer program comprising commands causing a closed-loop and/or open-loop control and/or monitoring unit (18) of a combustion device (1) to perform method steps of one of the above methods, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is communicatively connected to a first combustion sensor (9) of the combustion device (1) and a second sensor (10, 11) of the combustion device (1).
In a specific embodiment, one of the above-mentioned computer programs comprises a microprocessor program and/or a microcontroller program in a closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches a computer program comprising commands causing a closed-loop and/or open-loop control and/or monitoring unit (18) of a combustion device (1) to perform method steps of one of the above methods, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is communicatively connected to a first combustion sensor (9) of the combustion device (1) and to a second sensor (10, 11) of the combustion device (1) and to at least one actuator (4; 6) of the combustion device (1).
The present disclosure furthermore teaches a computer program comprising commands causing a closed-loop and/or open-loop control and/or monitoring unit (18) of a combustion device (1) to perform method steps of one of the above methods, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is communicatively connected to a first combustion sensor (9) of the combustion device (1) and to a second sensor (10, 11) of the combustion device (1) and to at least one actuator of the combustion device (1), wherein the at least one actuator (4; 6) acts on at least one conduit of the combustion device (1) selected from an air supply conduit or a fuel supply conduit (8).
The present disclosure additionally teaches a computer readable medium having stored thereon a computer program according to one of the preceding claims.
The present disclosure further teaches a computer readable medium having one of the computer programs described above stored thereon.
In a specific embodiment, one of the above-mentioned computer programs comprises a microprocessor program and/or a microcontroller program. In other words, the microprocessor program and/or the microcontroller program are stored on a medium readable by the microprocessor and/or the microcontroller.
The disclosure furthermore teaches a combustion apparatus (1) comprising a combustion chamber (2), at least one conduit selected from an air supply conduit and a fuel supply conduit (8), at least one actuator (4; 6) acting on the at least one conduit, a first combustion sensor (9) in the combustion chamber (2), a second sensor (10, 11) different from the first combustion sensor (9), a closed-loop and/or open-loop control and/or monitoring unit (18) communicatively connected with the at least one actuator (4; 6), the first combustion sensor (9) and the second sensor (10, 11), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
receiving a first setpoint value for a signal from a first combustion sensor (9) for a first fuel (7);
Controlling the combustion device (1) by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a first setpoint value of a signal from the first combustion sensor (9);
recording a first signal from a first combustion sensor (9);
recording a second signal from a second sensor (10, 11);
determining a second fuel (7) as a function of the first signal and as a function of the second signal;
comparing the first fuel (7) with the second fuel (7) in terms of composition of the fuels (7);
If the second fuel (7) has a different composition than the first fuel (7):
Determining a second setpoint value of the signal from the first combustion sensor (9) as a function of the second fuel (7); and
The combustion device (1) is controlled by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a second setpoint value of the signal from the first combustion sensor (9).
The present disclosure also teaches a combustion apparatus (1) comprising a combustion chamber (2), at least one conduit selected from an air supply conduit and a fuel supply conduit (8), at least one actuator (4; 6) acting on the at least one conduit, a first combustion sensor (9) in the combustion chamber (2), a second sensor (10, 11) different from the first combustion sensor (9), a closed-loop and/or open-loop control and/or monitoring unit (18) communicatively connected with the at least one actuator (4; 6), the first combustion sensor (9) and the second sensor (10, 11), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
receiving a first setpoint value for a signal from a first combustion sensor (9) for a first fuel (7);
Controlling the combustion device (1) by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a first setpoint value of a signal from the first combustion sensor (9);
recording a first signal from a first combustion sensor (9);
recording a second signal from a second sensor (10, 11);
determining a second fuel (7) as a function of the first signal and as a function of the second signal;
Comparing the first fuel (7) with the second fuel (7) in terms of composition of the fuels (7);
If the second fuel (7) has a different composition than the first fuel (7):
determining a second setpoint value of the signal from the first combustion sensor (9) as a function of the setpoint value of the air-fuel ratio lambda of the second fuel (7); and
The combustion device (1) is controlled by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a second setpoint value of the signal from the first combustion sensor (9).
In one embodiment, the combustion apparatus (1) comprises a combustion chamber (2), and the first combustion sensor (9) is a first ionizing electrode in the combustion chamber (2). The first setpoint value of the signal from the first combustion sensor (9) is preferably a first setpoint value of the ionization current from the first ionization electrode. The first signal recorded from the first combustion sensor (9) is preferably a first ionization current. The closed-loop and/or open-loop control and/or monitoring unit (18) is thus configured to record the first ionization current from the first ionization electrode.
In one embodiment, the combustion device (1) comprises a combustion chamber (2), and the second sensor (10, 11) is a second ionization electrode in the combustion chamber (2). The second signal recorded from the second sensor (10, 11) is preferably a second ionization current. The closed-loop and/or open-loop control and/or monitoring unit (18) is thus configured to record a second ionization current from the second ionization electrode.
In another embodiment, the combustion device (1) comprises a fuel supply conduit (8), and the second sensor (10, 11) is a flow sensor for registering a flow of fuel (7) through the fuel supply conduit (8). In particular, a second sensor (10, 11) in the form of a flow sensor can extend into the fuel supply line (8). A second sensor (10, 11) in the form of a flow sensor may also be arranged in the fuel supply conduit (8). A second sensor (10, 11) in the form of a flow sensor may be further fixed to the fuel supply conduit (8). The second sensor (10, 11) in the form of a flow sensor may also be mechanically fixed to the fuel supply pipe (8), for example by spot welding and/or paint and/or adhesive. Thus, the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to record a second signal from the flow sensor in the form of a flow signal through the fuel supply conduit (8).
In another embodiment, the combustion apparatus (1) comprises a fuel supply conduit (8) and the second sensor (10, 11) is configured to detect a valve and/or damper position. The valve and/or damper position is a measure of the fuel flow (7) through the fuel supply conduit (8). The closed-loop and/or open-loop control and/or monitoring unit (18) is thus configured to record flow signals in the form of valve and/or damper positions through the fuel supply line (8) by means of the second sensor (10, 11).
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
receiving a setpoint value of an air-fuel ratio lambda of a first fuel (7); and
A first setpoint value of the signal from the first combustion sensor (9) is determined on the basis of a setpoint value of the air-fuel ratio lambda of the first fuel (7).
The present disclosure also teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
a first setpoint value of the signal from the first combustion sensor (9) is received or determined.
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
by means of the stored profile of the first fuel (7), a first setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the first fuel (7).
The present disclosure also teaches one of the combustion apparatus (1) above, wherein the combustion apparatus (1) comprises a non-volatile memory, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The first setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the first fuel (7) by means of a profile of the first fuel (7) stored in a non-volatile memory.
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the combustion apparatus (1) comprises a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The first setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the first fuel (7) by means of a profile of the first fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
For the above-described configuration of the closed-loop and/or open-loop control and/or monitoring unit (18) for determining the first setpoint value of the signal from the first combustion sensor (9), a table or corresponding means for determining the first setpoint value, such as, for example, a mathematical relationship or a program sequence, can be considered in addition to the saved curve.
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to:
the second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of one or more tables stored in the non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
by means of the stored mathematical relationship, the second fuel (7) is determined as a function of the first signal and as a function of the second signal.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a mathematical relationship stored in the non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of the stored program sequence.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a program sequence stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The second fuel (7) is determined as a function of the first signal and as a function of the second signal by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
determining a first difference between the first and second signals; and
The first difference is assigned to the second fuel (7).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to:
The first difference is assigned to the second fuel (7) by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the first difference is assigned to the second fuel (7) by means of one or more tables stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the first difference is assigned to the second fuel (7) by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the first difference is assigned to the second fuel (7) by means of a stored mathematical relationship.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the first difference is assigned to the second fuel (7) by means of a mathematical relationship stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) may be configured to:
the first difference is assigned to the second fuel (7) by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the first difference is assigned to the second fuel (7) by means of a stored program sequence.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The first difference is assigned to the second fuel (7) by means of a program sequence stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) may be configured to:
The first difference is assigned to the second fuel (7) by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Determining a first index as a function of the first signal and as a function of the second signal;
determining a first negative sign or a first positive sign of the first exponent; and
The second fuel (7) is determined as a function of the first index and as a function of the first negative sign or the first positive sign of the first index.
In one embodiment, the first index is a quotient of the first signal and the second signal. The first index may also be a function of the quotient of the first signal and the second signal. Further, it may be provided that the first index is the difference between the first signal and the second signal. It may also be provided that the first index is a function of the difference between the first signal and the second signal.
Furthermore, the present disclosure teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Determining a first difference between the first and second signals;
determining a first negative sign or a first positive sign of the first difference; and
The second fuel (7) is determined as a function of the first difference and as a function of the first negative sign or the first positive sign.
The present disclosure also teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
receiving a setpoint value of an air-fuel ratio lambda of the second fuel (7); and
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7).
Furthermore, the present disclosure teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
determining a setpoint value for the air-fuel ratio lambda of the second fuel (7); and
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7).
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
By means of the stored profile of the second fuel (7), a second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7).
The present disclosure also teaches one of the combustion apparatus (1) above, wherein the combustion apparatus (1) comprises a non-volatile memory, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
A second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of a setpoint value of the air-fuel ratio lambda of the second fuel (7) by means of a profile of the second fuel (7) stored in the non-volatile memory.
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the combustion apparatus (1) comprises a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
the second setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the second fuel (7) by means of a profile of the second fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
For the above-described configuration of the closed-loop and/or open-loop control and/or monitoring unit (18) for determining the second setpoint value of the signal from the first combustion sensor (9), tables or other means may be considered in addition to the saved curves. Further means for determining the second setpoint value include, in particular, mathematical relationships or program sequences.
In one embodiment, at least one actuator (4; 6) acts on the air supply duct and comprises a blower (4), in particular a motor-driven blower. In particular, the control may be performed using a pulse width modulated signal directed to a motor driven blower (4). Further, control may be performed using a signal from an inverter, wherein the signal from the inverter is directed to a motor-driven blower (4). In a further embodiment, at least one actuator (4; 6) acts on the air supply conduit and comprises an air damper, in particular a motor-adjustable air damper. In particular, the control may be performed using a pulse width modulated signal that is directed to a motor-adjustable air damper. Further, control may be performed using a signal from the inverter, wherein the signal from the inverter is directed to the motor-adjustable air damper. Control may also be provided by means of a signal between 0 and 20 milliamps or between 0 and 10 volts without any exhaustive requirement. Control by a stepper motor is also possible.
The at least one actuator (4; 6) can further act on the fuel supply line (8) and comprises a valve, in particular a motor-adjustable valve. In particular, the control may be performed using a pulse width modulated signal directed to the motor adjustable valve. Further, control may be performed using a signal from the inverter, wherein the signal from the inverter is directed to the motor adjustable valve. The at least one actuator (4; 6) can furthermore act on a fuel supply line (8) and comprises a fuel damper, in particular a motor-adjustable fuel damper. In particular, the control may be performed using a pulse width modulated signal that is directed to a motor-adjustable fuel damper. Further, control may be performed using a signal from the inverter, wherein the signal from the inverter is directed to the motor-adjustable fuel damper. Control may also be provided by means of a signal between 0 and 20 milliamps or between 0 and 10 volts without any exhaustive requirement. Control by a stepper motor is also possible.
The present disclosure additionally teaches one of the above combustion apparatus (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Adjusting at least one actuator (4; 6);
after adjusting the at least one actuator (4; 6), a third signal from the first combustion sensor (9) is recorded;
After adjusting the at least one actuator (4; 6), a fourth signal from the second sensor (10, 11) is recorded;
determining a third fuel (7) as a function of the third signal and as a function of the fourth signal;
comparing the first fuel (7) with the third fuel (7) in terms of composition of the fuels (7);
If the first fuel 7 and the third fuel 7 have different compositions:
Determining a third setpoint value of the signal from the first combustion sensor (9) as a function of the third fuel (7); and
The combustion device (1) is controlled by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a third setpoint value of the signal from the first combustion sensor (9).
The present disclosure also teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Adjusting at least one actuator (4; 6);
after adjusting the at least one actuator (4; 6), a third signal from the first combustion sensor (9) is recorded;
After adjusting the at least one actuator (4; 6), a fourth signal from the second sensor (10, 11) is recorded;
determining a third fuel (7) as a function of the third signal and as a function of the fourth signal;
comparing the first fuel (7) with the third fuel (7) in terms of composition of the fuels (7);
If the first fuel 7 and the third fuel 7 have different compositions:
determining a third setpoint value of the signal from the first combustion sensor (9) as a function of the setpoint value of the air-fuel ratio lambda of the third fuel (7); and
The combustion device (1) is controlled by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a third setpoint value of the signal from the first combustion sensor (9).
In one embodiment, the combustion apparatus (1) comprises an adjustable actuator (4; 6).
Furthermore, the present disclosure teaches one of the above combustion devices (1) comprising an adjustment of at least one actuator (4; 6), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
A setpoint value for the air-fuel ratio lambda of the third fuel (7) is determined at least from the third signal and the fourth signal.
The present disclosure furthermore teaches one of the above combustion devices (1) comprising an adjustment of at least one actuator (4; 6), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
a setpoint value for the air-fuel ratio lambda of the third fuel (7) is determined at least from the third and fourth signals and a profile of the third fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure additionally teaches one of the above combustion devices (1) comprising an adjustment of at least one actuator (4; 6), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
The setpoint value of the air-fuel ratio lambda of the third fuel (7) is determined at least from the third and fourth signals and a profile of the first fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18) and a profile of the third fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured, in the case of containing the third fuel (7), to:
the third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of one or more tables stored in the non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
by means of the stored mathematical relationship, a third fuel (7) is determined as a function of the third signal and as a function of the fourth signal.
In one embodiment, the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
A third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7) by means of a stored mathematical relationship and as a function of the third signal and as a function of the fourth signal. The mathematical relationship is desirably stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a mathematical relationship stored in the non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
By means of the stored program sequence, a third fuel (7) is determined as a function of the third signal and as a function of the fourth signal.
In one embodiment, the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
By means of the stored program sequence and as a function of the third signal and as a function of the fourth signal, a third setpoint value for the signal from the first combustion sensor (9) is determined on the basis of the setpoint value for the air-fuel ratio lambda of the third fuel (7).
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a program sequence stored in the non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the third signal and as a function of the fourth signal by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18). The stored program sequence is desirably stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure furthermore teaches one of the above combustion apparatuses (1), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
determining a second difference between the third and fourth signals; and
A third fuel (7) is determined as a function of the second difference.
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
the third fuel (7) is determined as a function of the second difference by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
a third fuel (7) is determined as a function of the second difference by means of one or more tables stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the second difference by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
A third fuel (7) is determined as a function of the second difference by means of the stored mathematical relationship.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
a third fuel (7) is determined as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
By means of the stored program sequence, a third fuel (7) is determined as a function of the second difference.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third fuel (7) is determined as a function of the second difference by means of a program sequence stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to include, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the second difference by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure furthermore teaches one of the above-mentioned combustion devices (1) comprising a third fuel (7), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Determining a first index as a function of the first signal and as a function of the second signal;
Determining a second index as a function of the third signal and as a function of the fourth signal; and
The third fuel (7) is determined as a function of the first index and as a function of the second index.
In one embodiment, the second exponent is a quotient of the third signal and the fourth signal. The second index may also be a function of the quotient of the third signal and the fourth signal. Further, it may be provided that the second index is a difference of the third signal and the fourth signal. It may also be provided that the second index is a function of the difference between the third signal and the fourth signal.
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third fuel (7) is determined as a function of the first index and as a function of the second index by means of one or more tables stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
By means of the stored mathematical relationship, a third fuel (7) is determined as a function of the first index and as a function of the second index.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of a mathematical relationship stored in the non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
by means of the stored program sequence, a third fuel (7) is determined as a function of the first index and as a function of the second index.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third fuel (7) is determined as a function of the first index and as a function of the second index by means of a program sequence stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first index and as a function of the second index by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure furthermore teaches one of the above combustion apparatuses (1) in the case of containing a third fuel (7), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Determining a first difference between the first and second signals;
determining a second difference between the third and fourth signals; and
A third fuel (7) is determined as a function of the first difference and as a function of the second difference.
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of one or more stored tables.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of one or more tables stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of one or more tables stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
by means of the saved mathematical relationship, a third fuel (7) is determined as a function of the first difference and as a function of the second difference.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a mathematical relationship stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
By means of the stored program sequence, a third fuel (7) is determined as a function of the first difference and as a function of the second difference.
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a program sequence stored in a non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
The third fuel (7) is determined as a function of the first difference and as a function of the second difference by means of a program sequence stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
The present disclosure also teaches one of the above combustion apparatuses (1) comprising a third fuel (7) and a second index, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
determining a second negative sign or a second positive sign of the second exponent; and
The third fuel (7) is determined as a function of the second index and as a function of a second negative sign or a second positive sign of the second index.
The present disclosure also teaches one of the above combustion apparatuses (1) comprising a third fuel (7) and a second difference, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Determining a second negative sign or a second positive sign of the second difference; and
A third fuel (7) is determined as a function of the second difference and a second negative sign or a second positive sign as the second difference.
The present disclosure also teaches one of the above combustion apparatuses (1) in the case of containing a third fuel (7), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
a setpoint value for the air-fuel ratio lambda of the third fuel (7) is specified; and
A third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7).
The setpoint value specifying the air-fuel ratio lambda of the third fuel (7) is preferably such that the air-fuel ratio lambda is defined with a saved curve. The stored profile is desirably a profile stored for the third fuel (7). The same applies to the first and second fuels (7) with appropriate modifications.
The present disclosure furthermore teaches one of the above combustion apparatuses (1) in the case of containing a third fuel (7), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
determining a setpoint value for the air-fuel ratio lambda of the third fuel (7); and
A third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7).
The closed-loop and/or open-loop control and/or monitoring unit (18) is preferably configured to, in the case of the inclusion of the third fuel (7):
by means of the stored profile of the third fuel (7), a third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7).
The combustion device (1) desirably comprises a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
A third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7) by means of a profile of the third fuel (7) stored in the non-volatile memory.
The combustion device (1) may in particular comprise a closed-loop and/or open-loop control and/or monitoring unit (18) with a non-volatile memory, and the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to, in case of containing the third fuel (7):
the third setpoint value of the signal from the first combustion sensor (9) is determined on the basis of the setpoint value of the air-fuel ratio lambda of the third fuel (7) by means of a profile of the third fuel (7) stored in a non-volatile memory of the closed-loop and/or open-loop control and/or monitoring unit (18).
For the above-described configuration of the closed-loop and/or open-loop control and/or monitoring unit (18) for determining the third setpoint value of the signal from the first combustion sensor (9), a table or corresponding means for determining the third setpoint value, such as, for example, a mathematical relationship or a program sequence, can be considered in addition to the saved curve.
For the purposes of the above embodiments, the first fuel (7) has a composition. The second and third fuels (7) likewise each have a composition.
The foregoing relates to various embodiments of the present disclosure. The embodiments may be modified in various ways without departing from the basic concept and without exceeding the scope of the disclosure. The subject matter of the present disclosure is defined by the claims thereof. A very wide variety of modifications are possible without exceeding the scope of protection of the following claims.
Reference numerals
1. Combustion apparatus
2. Combustion chamber
3. Exhaust gas
4 (Motor driven) blower
5. Air supply
6. Fuel actuator (in particular gas volume actuator, motor-adjustable valve)
7. Fuel, in particular gas
8. Fuel supply pipeline
9. First combustion sensor
10. Optional flow and/or pressure sensors, internal components in the fuel supply line may be necessary
11. Second sensor
12. Signal line for specifying air supply (air throughput) of blower
13. Blower speed (Signal line for transmitting blower speed)
14. Signal line for specifying fuel supply (fuel throughput) of fuel actuator
15 Signal line of (first) ionization signal
16. Signal and/or feedback lines of optional flow and/or pressure sensors
17. Signal line for selecting second ionization signal
18. Closed-loop and/or open-loop control and/or monitoring unit (with non-volatile memory)
19. Air supply or blower speed or power
20. Ionization current
21. Curve of ionization current of fuel (mixture) and λ=λ setpoint,fuel1
22. Curve of ionization current of fuel (mixture) two and λ=λ setpoint,fuel2
23. Curve of ionization current for a mixture of fuel one and fuel two and λ=λ setpoint,mixture
24. Air-fuel ratio lambda
25. Ionization current
26-29 Ionization current plotted against λ for air supply or blower speed or power
26. First combustion sensor and first fuel
27. First combustion sensor and second fuel
28 Second combustion sensor and first fuel
29 A second combustion sensor and a second fuel
30a、30bλsetpoint
31 First lambda drift
32 Second lambda drift
Difference in ionization current of 33 first lambda drift
Difference in ionization current of 34 second lambda drift.

Claims (15)

1. A method for controlling a combustion apparatus (1), the combustion apparatus (1) comprising a first combustion sensor (9) and a second sensor (10, 11), wherein the second sensor (10, 11) is different from the first combustion sensor (9), the method comprising the steps of:
designating a first setpoint value for a signal from a first combustion sensor (9) for a first fuel (7);
Controlling the combustion device (1) by means of a first combustion sensor (9) to a first setpoint value of a signal from the first combustion sensor (9);
recording a first signal from a first combustion sensor (9);
recording a second signal from a second sensor (10, 11);
determining a second fuel (7) as a function of the first signal and as a function of the second signal;
comparing the first fuel (7) with the second fuel (7) in terms of composition of the fuels (7);
If the second fuel (7) has a different composition than the first fuel (7):
Determining a second setpoint value of the signal from the first combustion sensor (9) as a function of the second fuel (7); and
The combustion device (1) is controlled by means of the first combustion sensor (9) to a second setpoint value of the signal from the first combustion sensor (9).
2. Method according to claim 1, wherein the combustion device (1) comprises an air supply duct and a fuel supply duct (8) and at least one actuator (4; 6), wherein the at least one actuator (4; 6) acts on at least one duct selected from the air supply duct and the fuel supply duct (8), the method comprising the steps of:
The combustion device (1) is controlled by means of at least one actuator (4; 6) and by means of a first combustion sensor (9) to a first setpoint value of a signal from the first combustion sensor (9).
3. Method according to one of claims 1 to 2, wherein the combustion device (1) comprises an air supply duct and a fuel supply duct (8) and at least one actuator (4; 6), wherein the at least one actuator (4; 6) acts on at least one duct selected from the air supply duct and the fuel supply duct (8), the method comprising the steps of:
The combustion device (1) is controlled by means of at least one actuator (4; 6) and by means of a first combustion sensor (9) to a second setpoint value of the signal from the first combustion sensor (9).
4. A method according to one of claims 1 to 3, comprising the steps of:
Determining a first index as a function of the first signal and as a function of the second signal;
determining a first negative sign or a first positive sign of the first exponent; and
The second fuel (7) is determined as a function of the first index and as a function of the first negative sign or the first positive sign of the first index.
5. Method according to one of claims 1 to 4, wherein the combustion device (1) comprises an air supply duct and a fuel supply duct (8) and at least one actuator (4; 6), wherein the at least one actuator (4; 6) acts on at least one duct selected from the air supply duct and the fuel supply duct (8), the method comprising the steps of:
changing the position of at least one actuator (4; 6);
After changing the position of the at least one actuator (4; 6), a third signal from the first combustion sensor (9) is recorded;
-after changing the position of the at least one actuator (4; 6), recording a fourth signal from the second sensor (10, 11);
determining a third fuel (7) as a function of the third signal and as a function of the fourth signal;
comparing the first fuel (7) with the third fuel (7) in terms of composition of the fuels (7);
if the first fuel (7) and the third fuel (7) have different compositions:
Determining a third setpoint value of the signal from the first combustion sensor (9) as a function of the third fuel (7); and
The combustion device (1) is controlled by means of the first combustion sensor (9) to a third setpoint value of the signal from the first combustion sensor (9).
6. The method according to claim 5, comprising the steps of:
Determining a first index as a function of the first signal and as a function of the second signal;
Determining a second index as a function of the third signal and as a function of the fourth signal; and
A third fuel (7) is determined as a function of the first index and as a function of the second index.
7. The method according to claim 6, comprising the steps of:
determining a second negative sign or a second positive sign of the second exponent; and
The third fuel (7) is determined as a function of the second index and as a function of the second negative sign or the second positive sign of the second index.
8. A method according to claims 6 and 7, comprising the steps of:
the third fuel (7) is determined as a function of the first index and as a function of the second negative sign or the second positive sign of the second index.
9. A computer program comprising commands that cause a closed-loop and/or open-loop control and/or monitoring unit (18) of a combustion device (1) to perform method steps of one of the methods as claimed in claims 1 to 8, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is communicatively connected to a first combustion sensor (9) of the combustion device (1) and to a second sensor (10, 11) of the combustion device (1).
10. A computer readable medium on which is stored a computer program according to claim 9.
11. A combustion device (1) comprising a combustion chamber (2), at least one conduit selected from an air supply conduit and a fuel supply conduit (8), at least one actuator (4; 6) acting on the at least one conduit, a first combustion sensor (9) in the combustion chamber (2), a second sensor (10, 11) different from the first combustion sensor (9), a closed-loop and/or open-loop control and/or monitoring unit (18) communicatively connected with the at least one actuator (4; 6), the first combustion sensor (9) and the second sensor (10, 11), wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
receiving a first setpoint value for a signal from a first combustion sensor (9) for a first fuel (7);
Controlling the combustion device (1) by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a first setpoint value of a signal from the first combustion sensor (9);
recording a first signal from a first combustion sensor (9);
recording a second signal from a second sensor (10, 11);
determining a second fuel (7) as a function of the first signal and as a function of the second signal;
Comparing the first fuel (7) with the second fuel (7) in terms of composition of the fuels (7);
If the second fuel (7) has a different composition than the first fuel (7):
Determining a second setpoint value of the signal from the first combustion sensor (9) as a function of the second fuel (7); and
The combustion device (1) is controlled by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a second setpoint value of the signal from the first combustion sensor (9).
12. The combustion apparatus (1) according to claim 11, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Determining a first index as a function of the first signal and as a function of the second signal;
determining a first negative sign or a first positive sign of the first exponent; and
The second fuel (7) is determined as a function of the first index and as a function of the first negative sign or the first positive sign of the first index.
13. The combustion apparatus (1) according to one of claims 11 to 12, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Adjusting at least one actuator (4; 6);
after adjusting the at least one actuator (4; 6), a third signal from the first combustion sensor (9) is recorded;
After adjusting the at least one actuator (4; 6), a fourth signal from the second sensor (10, 11) is recorded;
determining a third fuel (7) as a function of the third signal and as a function of the fourth signal;
Comparing the first fuel (7) with the third fuel (7) in terms of composition of the fuels (7);
if the first fuel (7) and the third fuel (7) have different compositions:
Determining a third setpoint value of the signal from the first combustion sensor (9) as a function of the third fuel (7); and
The combustion device (1) is controlled by means of a first combustion sensor (9) and by means of at least one actuator (4; 6) to a third setpoint value of the signal from the first combustion sensor (9).
14. The combustion apparatus (1) according to claim 13, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
Determining a first index as a function of the first signal and as a function of the second signal;
Determining a second index as a function of the third signal and as a function of the fourth signal; and
The third fuel (7) is determined as a function of the first index and as a function of the second index.
15. The combustion apparatus (1) according to claim 14, wherein the closed-loop and/or open-loop control and/or monitoring unit (18) is configured to:
determining a second negative sign or a second positive sign of the second exponent; and
The third fuel (7) is determined as a function of the second index and as a function of a second negative sign or a second positive sign of the second index.
CN202410334157.1A 2023-03-24 2024-03-22 Control of combustion apparatus Pending CN118687166A (en)

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EP23164184.6A EP4435322A1 (en) 2023-03-24 2023-03-24 Control of a combustion apparatus

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DE10025769A1 (en) 2000-05-12 2001-11-15 Siemens Building Tech Ag Control device for a burner
DE10030630A1 (en) 2000-06-28 2002-01-10 Siemens Building Tech Ag Monitoring fan speed involves determining revolution rate measurement value and comparing with reference value to determine whether fan is in sufficiently stationary state
DE50205205D1 (en) 2002-09-04 2006-01-12 Siemens Schweiz Ag Zuerich Burner controller and setting method for a burner controller
EP2466204B1 (en) 2010-12-16 2013-11-13 Siemens Aktiengesellschaft Regulating device for a burner assembly
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