EP3339735A1 - Procédé de commande d'un rapport air-combustible dans un système de chauffage, unité de commande et système de chauffage - Google Patents

Procédé de commande d'un rapport air-combustible dans un système de chauffage, unité de commande et système de chauffage Download PDF

Info

Publication number
EP3339735A1
EP3339735A1 EP17198205.1A EP17198205A EP3339735A1 EP 3339735 A1 EP3339735 A1 EP 3339735A1 EP 17198205 A EP17198205 A EP 17198205A EP 3339735 A1 EP3339735 A1 EP 3339735A1
Authority
EP
European Patent Office
Prior art keywords
heating system
signal
fuel
error
value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17198205.1A
Other languages
German (de)
English (en)
Other versions
EP3339735B1 (fr
Inventor
Remko Voordendag
Sipco Max Hijenga
Jan Koudijs
Jan Westra
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3339735A1 publication Critical patent/EP3339735A1/fr
Application granted granted Critical
Publication of EP3339735B1 publication Critical patent/EP3339735B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—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
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/26—Measuring humidity
    • F23N2225/30—Measuring humidity measuring lambda
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/18—Applying test signals, e.g. periodic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/06—Space-heating and heating water

Definitions

  • the invention relates to a method for controlling a fuel-air ratio in a heating system.
  • the invention also relates to a control unit adapted to carry out the method according to the present invention and to a heating system with the control unit according to the present invention.
  • DE 10 2010 055 567 shows and describes a method in which a gas supply is briefly increased and a resulting short-term increase of an ionization current is measured at a burner flame.
  • the ionization current is correlated with the fuel-air ratio.
  • the gas burner is controlled as a function of the strength of the short-term increase in the ionization current in order to ensure better combustion.
  • Such methods have the disadvantage that in certain situations the ionization current can be influenced by further external and / or internal influences, for example a gust of wind. In such cases, there is no clear correlation between a modulation of the gas supply and a modulation of the ionization current, which is the regulation of the gas burner, depending on the fuel-air ratio temporarily impossible.
  • heating system is to be understood as at least one device for generating heat energy, in particular a heating device or heating burner, in particular for use in a building heating system and / or for hot water generation, preferably by the combustion of a gaseous or liquid fuel.
  • a heating system can also consist of several such devices for generating heat energy and other, the heating operation supporting devices, such as hot water and fuel storage exist.
  • combustion parameter is to be understood in particular to be a scalar parameter which is correlated in particular with a combustion, in particular of a mixture, in particular of a combustion air and a fuel.
  • An example of a combustion characteristic is an ionization current which is measured at a flame of the heating system.
  • the combustion parameter corresponds to at least one or precisely one measured value representing the combustion and / or characterizing the combustion parameter or can be unambiguously assigned to such a measured value. Examples of a measured value representing the combustion and / or characterizing a combustion signal, in particular a light intensity, a pollutant emission, a temperature and / or advantageously an ionization signal.
  • An "average normal value” is understood to mean an average value of the combustion parameter which is averaged over a period of time that does not exhibit excessive fluctuations.
  • a fluctuation is to be understood as a temporal change of an absolute value of the combustion parameter. Too large a fluctuation can be understood to mean the occurrence of an excessively high absolute value of the combustion parameter and / or an excessive change rate of the absolute value of the combustion parameter.
  • the absolute value of the combustion parameter is detected or stored as a function of time.
  • the average normal value may be from the stored absolute value of the combustion characteristic as a function of time.
  • the average normal value is determined over a period of time and that too large fluctuations in the combustion parameter are not taken into account.
  • a relative signal maximum is to be understood as the maximum amplitude of the combustion parameter minus the largely constant amplitude of the combustion parameter before this period or the amplitude of the combustion parameter at the beginning of this period.
  • a relative signal maximum deviates sufficiently from the average normal value. The emergence of a relative signal maximum may be caused by a change in the boundary condition affecting the combustion. For example, a change in the pressure and / or the flow rate and / or the composition of the combustion air and / or the fuel and / or the mixture of combustion air and fuel can lead to a relative signal maximum.
  • a "first signal lower limit” is to be understood as a value determined in advance or during the execution of the method.
  • the first signal lower limit is provided for comparison with the combustion parameter.
  • the first signal lower limit may depend on one or more parameters, for example operating parameters of the heating system. In particular, the first signal lower limit may depend on a burner output of the heating system.
  • a "set point" is to be understood as a value determined in advance or during the execution of the method.
  • the set point is provided for comparison with the combustion characteristic.
  • the desired value is a control value to which the combustion parameter is regulated in a planned operation of the heating system.
  • the first lower signal limit can be from depend on one or more parameters, such as operating parameters of the heating system.
  • the setpoint may depend on a burner output of the heating system.
  • first normal state or “second normal state” is meant a state of the heating system in which the operation of the heating system takes place within the intended framework.
  • first fault state or “second fault state” is meant a state of the heating system in which the operation is not possible within the intended framework.
  • faults and defects include a non-fully functioning blower or suddenly occurring or slowly progressing blockages in the flow path of a fuel-air mixture. Causes of such blockages are, for example, wind, dirt, deposits or corrosion.
  • Examples of a non-optimal operation are over or under load of the heating system or a non-optimal combustion in a combustion chamber of the heating system, for example by incorrectly set operating parameters and / or incorrectly set sensors for determining the fuel-air ratio.
  • the combustion parameter is measured continuously or regularly and stored. From the stored values of the combustion parameter, the average normal value and the relative signal maximum are determined after predetermined time intervals or during the execution of the method. For example, it is conceivable that a time interval is set as soon as the combustion parameter deviates sufficiently from the nominal value.
  • the method according to the invention has the advantage that the fuel-air ratio can be determined largely correctly even with external influences on the combustion characteristic, in particular by a wind and air pressure fluctuations. This allows a largely optimal and low-emission operation of the heating system.
  • the heating system is regulated depending on whether a fault condition is detected.
  • a cause of a first fault condition can be remedied if a first fault condition is detected or too often detected in the method according to the present invention.
  • further diagnostic methods for determining the cause of a detected first fault condition can be carried out.
  • the heating system is controlled so that the cause of the first fault condition is at least partially resolved and / or that the cause of the first fault condition at least largely no longer affects the intended operation of the heater. In this way, the heating system can be brought as far as possible in a first normal state.
  • test mode is an operating mode of the heating system in which the heating system is operated in such a way that the functionality of the heating system is checked.
  • a sensor system and / or analysis of the heating system can be checked. For example, it can be determined in a test mode, whether the fuel-air ratio is largely determined correctly.
  • a functionality of the heater may at least partially differ from a planned normal operation of the heater, in particular be limited.
  • at least some other methods may be performed by the heater than in the intended normal operation. For example, in the test mode, a burner power range of the heater can be largely completely passed through. It is conceivable that a test operation is performed in parallel to a scheduled normal operation.
  • the intended normal operation is largely not disturbed and / or influenced by the test operation. It is conceivable that the intended normal operation is temporarily interrupted by the test operation.
  • a "test time" is a time at which a test operation is performed. The test time may be predetermined, in particular periodically, or during the execution of the Method are determined, for example, when a first fault condition is detected.
  • a "fluid supply parameter" is to be understood in particular to be a scalar parameter which is correlated in particular with at least one fluid, in particular a combustion unit of the heating system, in particular a combustion air flow, a fuel flow and / or a mixture flow, in particular from a combustion air and the fuel ,
  • a control and / or regulating unit of the heating system at least on the basis of the fluid supply characteristic to a volume flow and / or a mass flow of the at least one fluid are closed and / or the flow rate and / or the mass flow of the at least one fluid can be determined.
  • An example of a fluid supply parameter is the indication of an opening width of a fuel valve.
  • a “temporary, temporal fluid supply change” should be understood to mean a time-limited variation of the fluid supply parameter, so that it deviates from a largely constant value of the fluid supply parameter before the start of the fluid supply change.
  • the fluid supply parameter is initially increased or decreased over the period of the fluid supply change and subsequently regulated as far as possible to the value of the fluid supply parameter before the beginning of the fluid supply change.
  • the duration of the fluid supply change is preferably pulse-like and short compared with the intended time variations of the fluid supply characteristic variable that occur during normal operation of the heating system.
  • relative correlated signal maximum is the maximum amplitude of the combustion parameter in a correlated with the temporal Fluidzubow short period minus the largely constant amplitude of the combustion characteristic before this period or less the amplitude of the Combustion parameter at the beginning of that period or less the average normal value during that period.
  • the relative correlated signal maximum is, in particular, a measure of the change in the combustion characteristic due to the fluid supply change.
  • a "second signal lower limit” is to be understood as a value determined in advance or during the execution of the method.
  • the second signal lower limit is provided for comparison with the combustion characteristic, in particular during the test operation.
  • the second signal lower limit may depend on one or more parameters, for example operating parameters of the heating system.
  • the second lower signal limit may depend on a burner output of the heating system.
  • the fluid supply parameter corresponds to a control signal for metering a fuel and / or a combustion air and / or a mixture of a fuel and combustion air, in this way no measurement of the fuel and / or the combustion air and / or a mixture of a fuel and combustion air or a flow of these fluids needed. This simplifies the procedure and makes it robust against malfunctions.
  • test time interval is the time interval between a last test time and a subsequent, future test time to understand.
  • Maximum test interval means a predetermined or definable variable during operation of the heater. For example, it is conceivable that the maximum test time interval is selected depending on a location of the heating system so that local emissions regulations are met.
  • a burner output of the heating system is increased, if a first false state is detected and / or if a first Starbucks Governmentvariable exceeds a first lower error limit, the operation of the heater is particularly safe and robust against external influences.
  • a first fault condition is caused by a strong wind or rapid pressure fluctuations outside the heater.
  • An increase in the burner output of the heating system for example, by increasing a volume flow of a fuel-air mixture, makes the heating system less sensitive to wind or air pressure fluctuations.
  • a "first error count variable” is to be understood as a variable, preferably an integer variable, which is longer than an iteration of the method according to the present invention and is stored and incremented if a first error state is detected. It is possible that the first error count variable is reduced if a first normal state or a second normal state is detected. In particular, it is conceivable that the first error count variable is reset to a start value, for example the value 0, when a first normal state or a second normal state is detected.
  • a “first lower error limit” is understand a predetermined or a definable during operation of the heater variable. It is possible that the first lower error limit is continuously updated depending on internal and external conditions. If, for example, a particularly windy weather situation is determined, the first lower error limit can be lowered temporarily.
  • first error count variable is increased, if a first error state is detected and / or a second error count variable is increased, if a second error state is detected, it is possible in this way, different causes for the first fault condition and for the second fault condition consider. This allows a particularly safe and efficient operation of the method of the method according to the present invention.
  • a "second error counting variable” is to be understood as a variable, preferably an integer variable, which is stored or stored for longer than an iteration of the method according to the present invention. It is possible that the second error count variable is reduced if a first normal state or a second normal state is detected. In particular, it is conceivable that the second error count variable is reset to a start value, for example the value 0, when a first normal state or a second normal state is detected.
  • first upper fault limit or a “second fault limit” is to be understood as meaning a predetermined variable or a variable which can be defined during operation of the heater.
  • the first upper error limit is greater than the first lower error limit. In this way, a first fault condition can initially be increased by increasing the Burner performance are counteracted before a fault reaction is performed.
  • An "error reaction” is understood to mean an operating state of the heating system which is a reaction to an occurring fault, defect, malfunction or non-optimal operation.
  • An error response may be a method of remedying the error, defect, disturbance, or non-optimal operation.
  • the heating system can be shut down or switched off, for example.
  • more extensive diagnostic methods for determining the cause of a detected first false state and / or second false state can be performed.
  • the heating system is regulated so that the cause of the first fault condition and / or the second fault condition is at least partially resolved and / or that the cause or causes of the first fault condition and / or the second fault condition at least largely no longer affects the intended operation of the heater or affect. In this way, the heating system can be brought as far as possible in a first normal state.
  • combustion parameter is determined by an ionization current measurement on a flame of the heating system, this is particularly advantageous since there is a functional relationship between the ionization current at a flame and the fuel-air ratio, which can be evaluated particularly favorably.
  • the method is further improved if the desired value and / or the first signal lower limit and / or optionally the fluid supply change and / or optionally the second lower signal limit of a
  • a control unit for a heating system which control unit is adapted to carry out a method for controlling a fuel-air ratio in a heating system according to the present invention, offers the additional advantage that by largely preventing a wrong adjustment of the fuel-air ratio the durability of the heating system is increased, malfunctions are avoided and thus safety is increased. In addition, by avoiding unnecessary test operations, the wear of the heating system is lowered and its availability increased.
  • a heating system with a control unit according to the present invention with a lonisation probe on a flame and with a blower with variable fan speed has the advantage that in the operation of the heating system, an incorrect adjustment of the fuel-air ratio is largely prevented. In this way, unforeseen, heavy loads on the heating system are avoided by, for example, excessive burner temperatures and / or blower speeds that are too high and / or excessively high soot emissions and / or excessive vibrations, even in unfavorable weather conditions. This allows a cost-effective production of the heating system. In addition, fuel consumption is reduced and the life of the heating system is increased or the time interval between the required inspection intervals is reduced.
  • FIG. 1 a heater 10 is shown schematically, which is arranged in the embodiment on a memory 12.
  • the heater 10 has a housing 14 which accommodates different components depending on the degree of equipment.
  • the essential components are a heat cell 16, a control unit 18, one or more pumps 20 and piping 22, cable or bus lines 24 and holding means 26 in the heater 10.
  • the number and complexity of the individual components depends on the equipment level of the heater 10.
  • the heat cell 16 includes a burner 28, a heat exchanger 30, a blower 32, a meter 34 and an air supply system 36, an exhaust system 38 and, when the heat cell 16 is in operation, a flame 40.
  • An ionization probe 42 protrudes into the flame 40.
  • the metering device 34 is designed as a fuel valve 44.
  • a fan speed 74 of the blower 32 is variably adjustable.
  • the heater 10 and the memory 12 together form a heating system 46.
  • the control unit 18 has a data memory 48, a computing unit 50 and a communication interface 52. Via the communication interface 52, the components of the heating system 46 can be controlled.
  • the communication interface 52 allows data exchange with external devices. External devices are, for example, control devices, thermostats and / or devices with computer functionality, for example smartphones.
  • FIG. 1 shows a heating system 46 with a control unit 18.
  • the control unit 18 is located outside the housing 14 of the heater 10.
  • the external control unit 18 is designed in particular variants as a room controller for the heating system 46.
  • the control unit 18 is mobile.
  • the external control unit 18 has a communication connection to the heater 10 and / or other components of the heating system 46.
  • the communication connection can be wired and / or wireless, preferably a radio connection, particularly preferably via WLAN, Z-Wave, Bluetooth and / or ZigBee.
  • the control unit 18 may consist of several components in other variants, in particular not physically connected components.
  • At least one or more components of the control unit 18 may be partially or wholly in the form of software which is executed on internal or external devices, in particular on mobile computing units, for example smartphones and tablets, or servers, in particular a cloud.
  • the communication connections are then corresponding software interfaces.
  • FIG. 2 shows the method 54 according to the invention for controlling a fuel-air ratio in a heating system 46.
  • a relative signal maximum 58 of a combustion parameter 60 is determined.
  • the combustion parameter 60 is an ionization current 62 (see FIG FIG. 3 ).
  • the ionization current 62 is recorded by the control unit 18 and stored as a time course.
  • the time profile of the ionization current 62 is continuously evaluated by the control unit 18. If the time course has too great a fluctuation, step 56 is carried out.
  • a maximum amplitude of the fluctuation is stored as an absolute signal maximum.
  • a variation is classified as too large in the exemplary embodiment if the value of the ionization current 62 changes by more than one tolerance range over a test period.
  • the test period and the tolerance range are dependent on a burner output and an absolute value of the ionization current 62 in the exemplary embodiment.
  • the test period can take values between 1 ms and 1000 ms, preferably between 10 ms and 100 ms.
  • the tolerance range can assume values between 10% and 70%, preferably between 20% and 50%, particularly preferably between 30% and 40%.
  • the control unit 18 takes into account a current operating mode of the heating system 46.
  • the absolute signal maximum is detected in such an operating state of the heating system 46, in which a constant heating power is requested.
  • the relative signal maximum 58 is determined as the difference between the absolute signal maximum and a value of the ionization current 62, which was detected immediately before the fluctuation was detected.
  • an average normal value 66 of the combustion parameter 60 is determined.
  • a time average of the time profile of the ionization current 62 stored by the control unit 18 is formed for this purpose.
  • the time average of the ionization current 62 is formed between a time immediately before a beginning of the fluctuation detected in step 56 and a time immediately after the end of a last preceding fluctuation.
  • the average normal value 66 is determined over a period of a predetermined duration, with fluctuations taken out of the averaging. This has the advantage that a predeterminable minimum period or a predefinable minimum amount of data points is used or used for the averaging.
  • the average normal value 66 is determined over a period in which the heating system 46 is in such an operating state in which a constant heating power is requested.
  • step 64 may be performed prior to step 56. It is also possible that the steps 56 and 64 are executed as far as possible in parallel. In particular, it is conceivable that, in alternative embodiments, the average normal value 66 is used for determining the relative signal maximum 58, for example from the absolute signal maximum.
  • the time profile of the ionization current 62 recorded by the control unit 18 is subdivided into intervals, in particular regular intervals, in each of which average normal value 66 is determined via an averaging process, in which overly different data points are not taken into account.
  • the absolute signal maximum in each case is determined from the most strongly deviating data point in the respective interval, if such exists.
  • a first false state is determined in the exemplary embodiment, if the relative signal maximum 58 is smaller than a first signal lower limit 70 or if the average normal value 66 deviates too much from a desired value 72. If the relative signal maximum 58 is greater than or equal to the first signal lower limit 70 and if the average normal value 66 does not differ too much from the desired value 72, a first normal state is determined.
  • the first signal lower limit 70 is a predetermined and stored in the control unit 18 constant.
  • the first signal lower limit 70 in the exemplary embodiment is 10 ⁇ A. In alternative embodiments, the first signal lower limit 70 between 2 ⁇ A and 25 ⁇ A, preferably between 6 ⁇ A and 14 ⁇ A.
  • the setpoint value 72 depends on a burner output parameter 73 in the exemplary embodiment.
  • the set point 72 is a control value to which the ionization current 62 is regulated in a designated operation of the heating system 46.
  • the burner output parameter 73 is the fan speed 74.
  • a fan speed setpoint characteristic is stored in the control unit 18 which determines the functional relationship between the fan speed 74 and the setpoint value 72 then required describes.
  • setpoint value 72 assumes values between 10 ⁇ A and 100 ⁇ A, in particular between 30 ⁇ A and 60 ⁇ A.
  • the control unit 18 compares the relative signal maximum 58 determined in step 56 with the first signal lower limit 70, in which it is checked which of the two values is greater.
  • the control unit 18 checks the average normal value 66 determined in step 64, in which it is determined whether the average normal value 66 does not deviate too much from the desired value 72.
  • a deviation of the average normal value 66 by more than 10% from the target value 72 is classified as too strong.
  • a maximum allowable deviation of the average normal value 66 from the desired value 72 is between 1% and 25%, preferably between 5% and 15%.
  • the maximum permissible deviation of the average normal value 66 from the desired value 72 depends on one or more parameters, for example on a burner performance parameter 73 and / or on information about a weather situation. If it is determined in step 68 that a first false state exists, a first error count variable 76 stored in the control unit 18 is increased by one. It is determined that a first Normal state is present, the first Friedrichmorvariable 76 is set to the value 0.
  • FIG. 3 illustrates the relationship between the ionization current 62 and the fuel-air ratio at a constant fan speed 74.
  • the ionization current 62 is plotted on a first ordinate axis 78. On a first axis of abscissa 80, the fuel-air ratio is shown.
  • the course of the ionization stream 62 has an ionization current maximum 82 at a fuel / air ratio of 1.
  • the heating system 46 with a fuel-air ratio of 1.3 point 84 in FIG. 3 ) operated, so with an excess of air.
  • the method 54 checks whether the heating system 46 is operated with excess air.
  • a first normal state is determined only if the value of the relative signal maximum 58 has a sufficiently high value.
  • the variation of the ionization current 62 detected in step 56 is caused by a variation of the fuel-air ratio due to changing external conditions. If the fuel-air ratio prior to the variation is less than or equal to 1 and close to the ionization current maximum 82, in particular sufficiently smaller than 1.3, then the ionization current 62 can only increase slightly due to the variation. Since the increase in the ionization current 62, starting from the ionization current maximum 82, increases continuously in absolute value, the ionization current 62 can only increase strongly enough due to the variation of the fuel-air ratio if the fuel-air ratio is far enough away from 1 before the variation.
  • Another condition for determining the first normal state is that the average normal value 66 does not deviate too much from a target value 72. In this way, it is ensured that the desired value 72 is achieved as far as possible and that regulation of the heating system 46 with the ionization current 62 as a controlled variable functions as far as possible. From the condition that the average normal value 66 does not deviate too much from a target value 72, it can be concluded that the fuel-air ratio is with high probability not significantly less than 1. It is possible to ensure with further methods and / or devices that the fuel-air ratio is not significantly less than 1, for example by an embodiment of the method 54 in which a test operation is performed (see FIG. 4 ).
  • FIG. 4 shows a method 54 in which a test operation is performed as soon as a test time 86 is reached.
  • the test operation comprises the steps 88, 104 and 108.
  • the test operation is carried out as far as possible regularly, the intended test time interval is one minute.
  • the test time interval may be in the range of one second to hours.
  • the test time interval is selected depending on an operating state of the heating system 46.
  • the test time interval is selected depending on how often a first false state and / or how often a first normal state is detected in a predetermined time interval.
  • a temporal fluid supply change 90 of a fluid supply characteristic 92 is generated.
  • the fluid supply characteristic 92 has an intended opening width 94 of the metering device 34.
  • the opening width 94 is a percentage, with an opening width 94 of 0% corresponding to a completely closed fuel valve 44 and an opening width 94 of 100% describing a fully opened fuel valve 44.
  • the intended opening width 94 is realized by a selection of the control signal and transmission of this control signal to the fuel valve 44 by the control unit 18.
  • the opening 94 describes a request that is communicated to the fuel valve 44.
  • the fluid supply change 90 is in FIG. 5 displayed.
  • a second abscissa axis 96 represents a time.
  • the fluid supply change 90 runs in a substantially rectangular pulse.
  • the fluid supply characteristic 92 or the opening 94 has a normal supply value.
  • the normal supply value is selected by the control unit 18 so that, under the currently existing conditions, the ionization current 62 largely assumes the desired value 72.
  • the opening 94 is increased as fast as possible to a maximum supply value.
  • An in FIG. 5 Imaged pulse height 100 is 15%.
  • An in FIG. 5 Imaged pulse height 100 is 15%.
  • 5 Imaged pulse width 102 is 120 ms.
  • the pulse height 100 and the pulse width 102 are constants stored in the memory unit 18.
  • the pulse height 100 assumes values in an interval between 10% and 20%.
  • the pulse width 102 may take values in an interval between 50 ms and 200 ms. It is conceivable that the fluid supply change in particular Embodiments 90 of at least one operating parameter of the heating system 46 depends. In particular, it is conceivable for the pulse height 100 and / or the pulse width 102 to be dependent on a burner output parameter 73, for example the fan speed 74.
  • a relative correlated signal maximum 106 of the combustion parameter 60 or the ionization current 62 is determined.
  • the correlated signal maximum 106 is correlated with the temporal fluid supply change 90.
  • the ionization current 62 is determined by the ionization probe 42 at the flame 40 and transmitted to the control unit 18.
  • the time profile of the ionization current 62 has the relative correlated signal maximum 106.
  • the relative correlated signal maximum 106 is determined from the difference between an absolute correlated signal maximum and a value of the ionization current 62, which was determined shortly before the increase of the ionization current 62 correlated with the fluid supply change 90 (see FIG. 5 ).
  • a second false state is determined if the relative correlated signal maximum 106 is smaller than a second signal lower limit 110. If the relative correlated signal maximum 106 is greater than or equal to the second lower signal limit 110, a second normal state is determined.
  • the second signal lower limit 110 is a predetermined constant stored in the control unit 18.
  • the second signal lower limit 110 in the exemplary embodiment is 5 ⁇ A.
  • the second lower signal limit 110 is between 1 ⁇ A and 2 ⁇ A, preferably between 3 ⁇ A and 7 ⁇ A.
  • the signal lower limit 110 is half the first lower signal limit 70.
  • the control unit 18 compares the relative correlated signal maximum 106 determined in step 104 with the second signal lower limit 110, in which it is checked which of the two values is greater. If it is determined in step 108 that there is a second false state, a second error count variable 112 stored in the control unit 18 is increased by one. If it is determined that there is a second normal state, the second error count variable 112 is set to the value 0. In alternative embodiments, the first error count variable 76 is set to the value 0 if a second normal state exists. In further embodiments, the second error count variable 112 is set to the value 0 if a first normal state is detected.
  • the first error count variable 76 and / or the second error count variable 112 is lowered, in particular by 1, if a first normal state and / or a second normal state is detected. It is also conceivable that in alternative embodiments, the first error count variable 76 and the second error count variable 112 are increased by a value greater than 1 when a first fault condition or a second fault condition is detected. In this way, it can be set, for example, that more first normal states and / or second normal states than first false states and / or second false states are necessary in order to lower the first error counting variable 76 and / or the second error counting variable 112.
  • the fluid supply change 90 generated in step 88 temporarily lowers the fuel-air ratio.
  • a positive relative correlated signal maximum 106 is only possible if the fuel-air ratio previously had a value greater than 1. If the fuel-air ratio previously had a value less than or equal to 1, then the ionization current 62 is lowered by the fluid supply change 90 (see FIG. 3 ).
  • the fluid supply parameter 92 corresponds to a control signal to the fuel valve 44 or to a value which can be derived, in particular scalar, from the control signal.
  • the fluid supply parameter 92 corresponds to a control signal for dosing a combustion air and / or a mixture of a fuel and a combustion air.
  • the control signal sent by the control unit 18 is composed of at least one control command to at least one metering device 34.
  • the at least one doser 34 is at least one fuel valve 44 and / or at least one blower 32.
  • a dosage value of the doser 34 is measured and used as the fluid supply characteristic 92.
  • dosage value is to be understood as a characteristic value which describes the state of the dosing device 34 and allows conclusions to be drawn about the amount of substance supplied and / or allowed to pass through the dosing device 34.
  • An example of a dosage value is a measured opening size of the fuel valve 44 and / or a measured fuel flow.
  • a future test time is postponed if a first normal state is determined before reaching the future test time.
  • a future test time is deferred if, prior to reaching the future test time, a first normal state is detected often enough, for example, three times.
  • an immediately following test time on the after the following test time is shifted or the current test time interval is doubled, if a first normal state is detected or is found often enough.
  • an immediately following test time is extended by an absolute time length, for example 15 seconds, or a relative time length, for example 10% of the current test time interval, if a first normal state is detected or is detected often enough.
  • a test operation is performed if a time since a last test operation exceeds a maximum test time interval.
  • the maximum test time interval is in particular an upper limit for the test time interval. In this way, it is ensured that variants with a variably extendable test time interval or with a displaceable future test time this future test time is not shifted too far into the future.
  • the control unit 18 the elapsed since a last test operation passed time is detected.
  • the maximum test time interval it is possible for the maximum test time interval to be set during operation of the heating system 46. For example, it is conceivable that during an installation and / or an inspection of the heating system 46, the control unit 18 receives information about a geographic location or the location of the heating system 46.
  • the maximum test time interval can be selected depending on the geographic location so that the local emissions regulations are always met. Furthermore, it is possible in this way, location-specific special environmental conditions that make a more frequent implementation of a test operation necessary, for example, a particularly strong air pollution, too consider.
  • the maximum test time interval is 10 minutes. In variants, the maximum test time interval can range from one minute to hours.
  • FIG. 6 shows an embodiment of the method 54 in which first steps 56, 64 and 68 are performed. Subsequently, in a step 114, the control unit 18 checks the value of the first error counting variable 76 and the value of the second error counting variable 112. If the first error count variable 76 exceeds a first upper error limit 116 or if the second error count variable 112 exceeds a second error limit 118, the method 54 continues on the path A and an error reaction 120 is performed. In the present embodiment, the first upper error limit 116 has the value 4 and the second error limit 118 the value 3. As an error reaction 120, the heating system 46 is shut down.
  • the first error count variable 76 is checked by the control unit 18 in step 114. If the first error count variable 76 exceeds a first lower error limit 122, the method 54 is continued on the path B and the burner output is increased in a step 124.
  • the first lower error limit 122 has the value 1.
  • the burner output is realized by increasing the fan speed 74. In the present embodiment, the burner power is increased by 50% of the burner power present at an execution time of the step 114.
  • the method 54 is terminated after step 114 (path C) in FIG. 6 ).
  • the burner output is increased as fault reaction 120 in a subsequent step 124 and / or a test operation comprising steps 88, 101 and 108 is performed.
  • the fluid supply change 90 is increased as a fault reaction 120 in a following step 88, for example, in which the pulse height 100 and / or the pulse width 102 is increased.
  • the first upper error limit 116 and / or the first lower error limit 122 and / or the second error limit 118 may assume any other integer values.
  • the first lower error limit 122 may assume the value 0, so that a step 124 is always executed if a first false state is detected.
  • first upper error limit 116 and / or the first lower error limit 122 and / or the second error limit 118 each depend on further information, in particular these variables can be set and / or updated during the operation of the heater. It is conceivable that the first upper error limit 116 and / or the first lower error limit 122 and / or the second error limit 118 are respectively selected depending on the geographical position so that the local emission regulations are always met.
  • the increase in the burner output in step 124 depends on the operating state of the heating system and / or depending on selected at an execution time of step 114 burner power.
  • the burner power is increased by a variable percentage of the burner power present at an execution time of step 114. The percentage is preferably in a range between 10% and 200%, in particular between 25% and 100%.
  • the combustion parameter 60 is an ionization stream 62.
  • the ionization stream 62 is determined by an ionization current measurement on a flame 40 of the heating system 46.
  • the ionization current 62 is determined by the ionization probe 42 and transmitted to the control unit 18.
  • the combustion parameter 60 is a light intensity, a lambda value, a pollutant emission and / or a temperature.
  • the light intensity at the flame 40 is determined by a photodiode.
  • the lambda value is measured with a lambda probe in an exhaust gas.
  • the exhaust system 38 has the lambda probe.
  • the pollutant emission is determined by a sensor device, which is located on the flame 40 and / or in the exhaust system 38.
  • the temperature is determined by a contact thermometer and / or a non-contact thermometer, in particular a pyrometer. The thermometer may be located in the exhaust system 38 and / or may measure the flame 40.
  • the desired value 72 and / or the first signal lower limit 70 and / or, if appropriate, the fluid supply change 90 and / or optionally the second lower signal limit 110 depend on a burner output parameter 73, for example on a fan speed 74.
  • the form of the respective dependence depends on the technical characteristics of the heating system 46.
  • the first signal lower limit 70 and / or optionally the second lower signal limit 110 have a high value for low fan speed 74 and this value decreases in each case with an increasing fan speed 74.
  • the method 54 is less sensitive to fluctuations in the ionization current 62, which are typically greater at low burner powers.
  • the fluid supply change 90 to be small at low fan speed 74 is and increases with an increasing fan speed 74. In this way it is ensured that the control of the heating system 46 is not disturbed by an excessive change in the fluid supply 90.

Landscapes

  • 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)
EP17198205.1A 2016-12-21 2017-10-25 Procédé de commande d'un rapport air-combustible dans un système de chauffage, unité de commande et système de chauffage Active EP3339735B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016225752.8A DE102016225752A1 (de) 2016-12-21 2016-12-21 Verfahren zur Kontrolle eines Brennstoff-Luft-Verhältnisses in einem Heizsystem sowie eine Steuereinheit und ein Heizsystem

Publications (2)

Publication Number Publication Date
EP3339735A1 true EP3339735A1 (fr) 2018-06-27
EP3339735B1 EP3339735B1 (fr) 2022-08-17

Family

ID=60186070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17198205.1A Active EP3339735B1 (fr) 2016-12-21 2017-10-25 Procédé de commande d'un rapport air-combustible dans un système de chauffage, unité de commande et système de chauffage

Country Status (2)

Country Link
EP (1) EP3339735B1 (fr)
DE (1) DE102016225752A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806610A2 (fr) * 1996-05-09 1997-11-12 STIEBEL ELTRON GmbH & Co. KG Procédé et dispositif pour le fonctionnement d'un brûleur à gaz
EP2017531A2 (fr) * 2007-06-11 2009-01-21 Vaillant GmbH Procédé de vérification d'un signal issu d'électrodes d'ionisation pour brûleurs
DE102010055567A1 (de) 2010-12-21 2012-06-21 Robert Bosch Gmbh Verfahren zur Stabilisierung eines Betriebsverhaltens eines Gasgebläsebrenners
EP2549187A2 (fr) * 2011-07-18 2013-01-23 Viessmann Werke GmbH & Co KG Procédé de régulation du facteur d'air d'un brûleur
EP2682679A2 (fr) * 2012-07-04 2014-01-08 Vaillant GmbH Procédé de surveillance d'un brûleur à gaz combustible

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429157A1 (de) * 1994-08-17 1996-02-22 Kromschroeder Ag G Verfahren zur Funktionsüberwachung eines Steuer- und Regelsystems
DE19539568C1 (de) * 1995-10-25 1997-06-19 Stiebel Eltron Gmbh & Co Kg Verfahren und Schaltung zur Regelung eines Gasbrenners
US5798946A (en) * 1995-12-27 1998-08-25 Forney Corporation Signal processing system for combustion diagnostics

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806610A2 (fr) * 1996-05-09 1997-11-12 STIEBEL ELTRON GmbH & Co. KG Procédé et dispositif pour le fonctionnement d'un brûleur à gaz
EP2017531A2 (fr) * 2007-06-11 2009-01-21 Vaillant GmbH Procédé de vérification d'un signal issu d'électrodes d'ionisation pour brûleurs
DE102010055567A1 (de) 2010-12-21 2012-06-21 Robert Bosch Gmbh Verfahren zur Stabilisierung eines Betriebsverhaltens eines Gasgebläsebrenners
EP2549187A2 (fr) * 2011-07-18 2013-01-23 Viessmann Werke GmbH & Co KG Procédé de régulation du facteur d'air d'un brûleur
EP2682679A2 (fr) * 2012-07-04 2014-01-08 Vaillant GmbH Procédé de surveillance d'un brûleur à gaz combustible

Also Published As

Publication number Publication date
EP3339735B1 (fr) 2022-08-17
DE102016225752A1 (de) 2018-06-21

Similar Documents

Publication Publication Date Title
DE102017204009A1 (de) Verfahren zur Kontrolle eines Brennstoff-Luft-Verhältnisses in einem Heizsystem sowie eine Steuereinheit und ein Heizsystem
DE102010055567B4 (de) Verfahren zur Stabilisierung eines Betriebsverhaltens eines Gasgebläsebrenners
EP3290797B1 (fr) Procédé de détection d'un état de vieillissement d'un système de chauffage ainsi qu'une unité de commande et système de chauffage
EP3825623B1 (fr) Appareil chauffant à réglage de mode d'urgence
DE102017204012A1 (de) Verfahren zur Kontrolle eines Brennstoff-Luft-Verhältnisses in einem Heizsystem sowie eine Steuereinheit und ein Heizsystem
EP2017531B1 (fr) Procédé de vérification d'un signal issu d'électrodes d'ionisation pour brûleurs
EP3290798B1 (fr) Procédé de réglage et de commande d'un rapport air-combustible dans un système de chauffage ainsi qu'unité de commande et système de chauffage
DE102011111453A1 (de) Verfahren zur Luftzahleinstellung bei einem Heizgerät
EP3290796B1 (fr) Procédé de commande d'un rapport air-combustible dans un système de chauffage et unité de commande et système de chauffage
DE102017204003A1 (de) Verfahren zur Einstellung und Regelung eines Brennstoff-Luft-Verhältnisses in einem Heizsystem sowie eine Steuereinheit und ein Heizsystem
EP3290801B1 (fr) Procédé de commande d'un rapport air-combustible dans un système de chauffage et unité de commande et système de chauffage
EP3339735B1 (fr) Procédé de commande d'un rapport air-combustible dans un système de chauffage, unité de commande et système de chauffage
EP4421386B1 (fr) Procédé de fonctionnement d'un appareil de chauffage, programme informatique, appareil de régulation et de commande et appareil de chauffage
EP3290800B1 (fr) Procédé d'actualisation d'une caractéristique dans un système de chauffage ainsi que unité de commande et système de chauffage
EP3715716B1 (fr) Procédé de réglage et de commande d'un rapport air-combustible dans un système de chauffage ainsi qu'unité de commande et système de chauffage
EP4083507B1 (fr) Procédé d'essai d'un clapet anti-retour dans une installation de chauffage
DE102022123906A1 (de) Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät, Heizgerät und Verwendung einer zweigeteilten Gaszuführung
EP4215815B1 (fr) Procédé de fonctionnement d'un appareil de chauffage à flamme d'une installation de chauffage, programme d'ordinateur, support de mémoire, appareil de réglage et de commande et appareil de chauffage
DE102017204014A1 (de) Verfahren zur Bestimmung einer Brennstofftypengröße in einem Heizsystem
EP4336102B1 (fr) Procédé d'évaluation d'une installation d'un connection gaz-air d'un appareil de chauffage, appareil de chauffage et programme informatique
EP4303489B1 (fr) Procédé de fonctionnement d'un appareil de chauffage, programme informatique et appareil de chauffage
EP3896340B1 (fr) Procédé de détection d'un blocage présent ou d'un risque de blocage d'au moins un chemin d'écoulement
DE102016216617A1 (de) Verfahren zur Einstellung eines neuen Kalibrierzeitpunktes in einem Heizsystem sowie eine Steuereinheit und ein Heizsystem
EP4372277A1 (fr) Procédé de mise en service d'un appareil de chauffage, appareil de chauffage et programme informatique
DE102022122811A1 (de) Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuer-gerät, Brennstoffdurchflussregler und Heizgerät

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

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

AX Request for extension of the european patent

Extension state: BA ME

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190102

RBV Designated contracting states (corrected)

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

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210429

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220310

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502017013622

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1512413

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220915

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220817

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221219

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221117

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221217

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502017013622

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

26N No opposition filed

Effective date: 20230519

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221117

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1512413

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20171025

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220817

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20251209

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20251022

Year of fee payment: 9

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502017013622

Country of ref document: DE