EP1462724A1 - Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage - Google Patents
Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage Download PDFInfo
- Publication number
- EP1462724A1 EP1462724A1 EP03006570A EP03006570A EP1462724A1 EP 1462724 A1 EP1462724 A1 EP 1462724A1 EP 03006570 A EP03006570 A EP 03006570A EP 03006570 A EP03006570 A EP 03006570A EP 1462724 A1 EP1462724 A1 EP 1462724A1
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- EP
- European Patent Office
- Prior art keywords
- sensor
- temperature
- burner
- burner control
- controller
- 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
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/02—Multiplex transmission
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- 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
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- 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
Definitions
- the safety requirements regarding temperature control and -limiting devices are, for example, in the German standard DIN 3440 established.
- a Safety temperature monitor STW
- STB safety temperature limiter
- the STB or STW mentioned at the outset are preferably used to monitor the Boiler temperature used in a boiler.
- the boiler temperature is from at least one temperature sensor, which e.g. on the boiler control panel of the Boiler can be arranged together with the temperature controller.
- the temperature controller compares the recorded temperature of the boiler with one predetermined setpoint and influences the actual value of the temperature in the sense of a Alignment to your setpoint. For example, if the Temperature limiters or monitors monitored temperature limit is reached or an error, e.g. Sensor breakage, sensor short circuit, failure of a component or If the power fails, the system should be switched off.
- the shutdown of the system triggered by the STB or STW generally causes a Interruption of energy supply.
- the control circuit or load circuit of an automatic burner control is used for this interrupted, which then shuts off the fuel supply.
- the controls Automatic burner control the starting process of the burner with preliminary ventilation, ignition and Flame monitoring.
- the burner control locks, i.e. it cuts off the fuel supply.
- the burner control must comply with special safety regulations. Representative of this, reference is made, for example, to the DIN EN 298 standard.
- German utility model DE 297 24 551 U1 for example Control arrangement known for a burner, in which the for detecting the Water temperature used in the boiler for both the temperature sensor Temperature control as well as for the safety temperature limiter is used. This allows a separate temperature sensor for the Safety temperature limiter, as is the case with the conventional control arrangements the case is to be waived.
- the use of the standardized interface also has the disadvantage that if, for example, one from the burner control to the boiler control panel transmitted 230 volt signal, which is to be further processed by the controller, can also be converted into a corresponding protective extra-low voltage signal must, since the controller is generally operated with protective extra-low voltage.
- the invention is therefore based on the object, in particular a device for Propose use in a heating system while avoiding the above Disadvantages of the prior art with little equipment enables reliable and accurate temperature control / limitation without safety-related aspects are neglected.
- the object of the invention is to propose a method which a reliable and accurate check of the function, especially one Temperature control / limitation function, especially for a heating system.
- the device according to the invention or the method according to the invention can be used for all functions relevant to safety in connection with the monitoring of thermal processes, which ensure that the system is put into an operationally safe state when a malfunction or a fault occurs.
- the device according to the invention is characterized in that the safety temperature limiter or temperature monitor (STB, STW) is distributed in terms of functionality to the automatic burner control unit and controller.
- the components of the STB or STW, which are subject to the requirements of enhanced security, are preferably provided in the automatic firing unit.
- the components that are not subject to the special requirements of enhanced safety are preferably provided in the controller. For example, the temperature comparison of the perceived actual temperature of the boiler with the maximum permissible safety temperature T STB at which the STB or STW trips is assigned to the automatic firing device.
- the sensor for recording the actual boiler temperature is preferably assigned to the controller.
- the recorded actual temperature is transferred from the controller to the automatic firing unit via a communication interface.
- the communication interface can be implemented, for example, as a data bus (electrical / optical fiber) or as a radio link.
- the burner control monitors the boiler temperature and switches off the fuel valves of the burner, for example, when the set safety temperature T STB is exceeded, as a result of which the fuel supply is interrupted.
- the inventive distribution of the functionality of the STB or STW to the controller and automatic burner control means that the previously conventional mechanical STB / STW as an independent device which detects, evaluates and monitors the boiler temperature and, if necessary, cuts off the fuel supply, can be dispensed with.
- the components required for the safety shutdown and preferably also the components for the locking need only be provided once, which means that the outlay on equipment can be significantly reduced.
- the integration of the safety-relevant functions of the STB or STW in the burner control also has the advantage that the existing safety structures of the burner control can be used synergistically in an optimal manner. Of course, a complete integration of STB or STW in the burner control is also possible.
- Another advantage of the invention is that the measurement value acquisition by the sensor and the further processing of the measured values in the controller and the Transmission of the measured values from the controller to the burner controls via a Communication interface tested by the burner control according to the invention or can be checked. It is preferred to check the temperature control / limitation function a corresponding one from the burner control Transmit the test request signal to a sensor / test value switchover module, whereby between the sensor resistance and a corresponding one Reference resistance can be switched.
- the sensor / test values are preferably transmitted at different times to each other.
- the requirements for interference immunity of the Communication are preferably used, the enables a CRC check to determine data transmission errors.
- a data bus is preferably used, the enables a CRC check to determine data transmission errors.
- the unlocking safety function which e.g. Max. 5 unlocks within a certain time allowed by locking an unlocking command transmitted via the data bus is canceled become.
- the unlock command can be from a non-security relevant designed device, e.g. generated by the operator using a portable device become.
- the Automatic burner controls additionally provide filtering for the received data become. This can e.g. prevent the burner, for example is inadvertently switched on / off.
- the controller according to the invention in accordance with the above The standard does not have to be designed to be safety-relevant, it is not a special one Safety measures for the controller are necessary.
- a galvanic isolation is recommended meets the requirements for safety extra-low voltage because the controller differs to the burner control is usually operated with protective extra-low voltage.
- the invention also has the advantage that further process signals between Automatic burner control and controller, for example the type of fuel, etc. via the Communication interface can be exchanged.
- Other advantages of Invention result from the following description.
- Figure 1 shows schematically the inventive arrangement with electronic Safety temperature limiter in connection with controller and automatic burner control.
- FIG. 2 shows the preferred implementation of the in a functional block diagram Invention for example based on the temperature control / limitation function.
- FIG. 1 shows the interaction of the automatic burner control unit (FA) and controller with a safety temperature limiter (STB) distributed over the controller and FA.
- a safety temperature monitor STW
- the sensor Tk is used, for example, to record the temperature of a boiler (not shown here) and is connected to the controller.
- the controller's analog / digital converter converts the analog measured value into a digital value, for example into a temperature value T. This is transferred from the controller to the burner control.
- the burner control includes a safety module.
- the safety module or STB module monitors, for example, the sensed boiler temperature T and switches off the burner (not shown here) if the reference value (safety temperature T STB ) stored in the STB module is exceeded.
- the safety temperature or tripping temperature T STB can be set, for example, by an installer using an operating device (not shown) when the system is started up.
- the safety temperature T STB is transmitted to the automatic firing system and stored, for example, in a safety-relevant manner in the STB module.
- the safety temperature T STB is preferably transmitted to the automatic firing system in the same format as the actual boiler temperature T.
- the STB module carries out a corresponding test to check the correct functioning of the measured value acquisition, the controller and the communication interface.
- the sensor and the path from the sensor connection terminal including further processing in the controller, for example analog / digital conversion, and also the transmission of the converted measured value are checked by the burner control.
- FIG. 2 shows a preferred exemplary embodiment of the implementation of the method for checking a temperature control / limiter function, the safety-relevant functions being carried out by the automatic firing device.
- the controller 20 and the automatic burner control 40 are connected to one another via a communication interface (30) as shown here.
- a communication interface for example, a data bus (electrical / optical) or a wireless radio connection can be used as the communication interface between the controller and the burner control.
- a sensor value / test value switchover module 10 is preferably controlled by the automatic firing device by means of a test request signal.
- the temperature sensor resistors 11 and 12 serve e.g. for recording the actual temperature of a boiler, not shown here.
- the reference resistors 13 and 14 are connected in parallel to these via switches 15 and 16. This is a switch between the sensor resistors 11 and 12 and the Reference resistors 13 and 14 possible, whereby the sensor values or reference / test values be preserved.
- the sensor value / test value switching module 10 assigned elements 11 to 16 corresponding to the Functionality can be partially or completely present in the controller 20.
- the temperature sensors Due to the double execution of the temperature sensors, e.g. NTC sensor, can for example the correct attachment of the temperature sensors or a short circuit or a sensor break by comparing the temperature sensor resistances or the Sensor values are recognized.
- This redundant version is the temperature sensor therefore a sensible security measure. Age-related drifting can also occur the sensor values by comparing them with the corresponding ones Reference resistances or reference values are determined.
- a separate single sensor can of course also be a double sensor or just one Temperature sensors are provided. In this case you only need one Reference resistance can be provided. It must be ensured that a reliable and safe sensor placement and function of the sensor is guaranteed. Of course, this also applies to the reference sensor or reference resistor.
- the sensor / test values T1 'and T2' or T Test 1 ' and T Test 2' are fed, for example, from a multiplexer 21 to an analog-digital converter 22.
- the test values can also be used to detect errors in multiplexing or in analog-to-digital conversion.
- the converted temperature values T1 'and T2' as well as the converted test values T Test 1 ' and T Test 2' are, for example, in hexadecimal form and are supplied to a shift register 23.
- the sensor and test values temporarily stored in register 23 are then preferably fed to a linearization module 24, which has software for linearizing the characteristic curve, for example.
- the probe / test values for example in hexadecimal form in register 23, can be converted into a form suitable for evaluation, for example, integer values.
- the sensor / test values T1, T2, T Test1 and T Test2 obtained by the linearization are e.g. B. fed to a shift register 25.
- the shift registers preferably have a ring structure.
- a test request signal for example a test control sequence, is preferably transmitted asynchronously from a test request unit (42) of the automatic firing unit to the sensor value / test value switchover module (10), for example every 10 seconds.
- the test request unit 42 can of course also be contained in the security module 41.
- the sensor resistors are then switched to the reference resistors.
- the firing automat then evaluates the response signal received within a defined time interval in order to check the function with regard to errors or faults that have occurred in the system.
- the asynchrony between sensor / test values can also be evaluated by the burner control.
- the answer to the test request can also be identified by a special attribute. This can make it easier for the burner control to evaluate the answer.
- a current time specification can be used as an attribute for identifying the response to the test request.
- a random value generated by the controller and checked by the burner control could also be used.
- the sensor / test values are preferably transmitted, for example, in accordance with a protocol, for example in the form of a data telegram.
- a protocol for example in the form of a data telegram.
- a corresponding send buffer 26 can be provided.
- one of the four data telegrams P 1 to P 4 is provided in the transmit buffer for transmission to the automatic firing system.
- the telegrams P 1 and P 2 are preferably transmitted periodically, for example every 5 seconds, automatically to the automatic firing device by the controller.
- the telegram P1 includes, for example, the sensor values T1, T2 and the test value T Test1.
- the telegram P 2 includes, for example, the test value T Test2 and the sensor values T1 and the sensor value T2.
- the telegrams P 3 , P 4 can each be transmitted, for example in response to the test request, preferably asynchronously to the telegrams P 1 or P 2 .
- the telegram P 3 includes, for example, the two test values T Test1, T Test2 and the sensor value T1.
- the telegram P 4 includes, for example, the sensor value T2 and the two test values T Test1, T Test2
- the burner control (40) or the safety module (41) can then carry out the checking of the temperature control / limitation function on the basis of the received data telegrams P 1 , P 2 , P 3 or P 4 .
- the various test functions are described below.
- the burner control first tests the correct sequence of telegrams P 1 to P 4. For example, a restart of the burner is prevented if the correct test sequence is not found.
- the test functions shown in the function block diagram are described below. Of course, a different order than the one shown here can also be used for the test functions.
- the first test function includes checking the two temperature values T1 and T2, which are compared for this purpose with the tripping temperature of the safety temperature limiter T STB . When T STB is reached or exceeded, a fault message is generated and the burner is switched off by the burner control. It is also locked if there is a switch-on command from the controller to the burner controls.
- the sensor values T1 and T2 are each compared with a maximum permissible temperature difference T diff . If this temperature difference is exceeded permanently, for example, the burner control locks the burner and generates a corresponding error message. If the temperature difference is exceeded briefly or once, only a safety shutdown can take place. However, if the permissible temperature difference is exceeded again or several times within a certain time, the burner control locks the burner.
- the third test function includes a comparison of the reference values T Ref1 and T Ref2 derived, for example, from the reference resistors with the test values T Test1 and T Test2 If the comparison result does not correspond to an expected value, for example, the burner control switches off the burner and an error message is generated. If there is no response to the test request, there may be, for example, a failure of the reference resistor or the controller or a communication fault. In this case, the burner can be locked by the burner control, for example after a time delay.
- the fourth function includes, for example, an overtemperature counter for determining whether the safety temperature T STB is subsequently exceeded when the burner is switched off due to a reheating effect. If this is the case, a corresponding counter is incremented. If, for example, the counter reading Z Aus has reached a predetermined value Z STB , then a locking takes place.
- an overtemperature counter for determining whether the safety temperature T STB is subsequently exceeded when the burner is switched off due to a reheating effect. If this is the case, a corresponding counter is incremented. If, for example, the counter reading Z Aus has reached a predetermined value Z STB , then a locking takes place.
- the Unlocking command can also be from a non-safety-related one designed operator panel are generated.
- the error-free Data transmission of the unlocking command via the data bus must be ensured. A CRC error check can be carried out for this purpose, for example. Beyond that no further special security measures regarding data transmission of the unlocking command can be provided.
- the unlocking function is described below. If there is a fault in the automatic burner control with interlock, which was sent as a fault message from the automatic burner control to the data bus and is displayed on the control unit, the operator can select a menu on the control unit for unlocking, for example. The unlocking command is then given by the operator to the data bus via the operating device. The unlocking is then carried out. In order to avoid incorrect operation, the unlocking function is preferably carried out using the handshake method. For example, the operating device which triggered the unlocking command can wait a certain time to determine whether the unlocking has been carried out successfully. If there is no information that the unlock was successful, a new attempt to unlock can only be allowed after a time delay, for example.
- the first class concerns e.g. internal faults of the burner control, which only can be reset after unlocking the lock. in the If the unlocking is blocked, e.g. only via a power on / off switch or via a special release button e.g. with a release button on the Boiler control panel unlocked by means of a separate data line become.
- the locking and unlocking can be done by a corresponding Display to be made clear to the operator.
- the second class concerns e.g. Fault in the heating system where the STB function has triggered.
- the locking can be done by the operator by means of a Unlocking command sent via data bus e.g. reset only once.
- the third class relates to other application errors, for example a HMI device can be reset.
- This is preferably a Security function used, e.g. a maximum of 5 releases within one allowed defined time.
- the safety function is only when unlocked effective via the data bus.
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Temperature (AREA)
Abstract
Description
Die Integration des Feuerungsautomaten, Temperaturreglers und Temperaturwächters stellt hierbei eine kostengünstige Lösung dar, da der apparative Aufwand aufgrund der Integration reduziert werden kann.
die sicherstellen, dass bei Auftreten einer Störung bzw.eines Fehlers die Anlage in einen betriebssicheren Zustand versetzt wird. Die erfindungsgemässe Vorrichtung zeichnet sich dadurch aus, dass der Sicherheitstemperaturbegrenzer bzw.- temperaturwächter (STB, STW) hinsichtlich der Funktionalität auf Feuerungsautomat und Regler verteilt wird. Die Komponenten des STB bzw. STW, die den Anforderungen einer erweiterten Sicherheit unterliegen, sind dabei vorzugsweise im Feuerungsautomaten vorgesehen. Die Komponenten die nicht den besonderen Anforderungen einer erweiterten Sicherheit unterliegen, sind vorzugsweise im Regler vorgesehen. Beispielsweise wird der Temperaturvergleich der gefühlten Ist-Temperatur des Kessels mit der maximal zulässigen Sicherheitstemperatur TSTB bei der der STB bzw. STW auslöst dem Feuerungsautomaten zugeordnet. Der Messfühler zur Erfassung der Ist- Kesseltemperatur wird vorzugsweise dem Regler zugeordnet. Die erfasste Ist-Temperatur wird in diesem Fall vom Regler über eine Kommunikationsschnittstelle an den Feuerungsautomaten übertragen. Die Kommunikationsschnittstelle kann beispielsweise als Datenbus (elektrisch-/ optische Lichtwellenleiter) oder als Funkverbindung ausgeführt werden. Der Feuerungsautomat überwacht dabei die Kesseltemperatur und schaltet bei Überschreiten der eingestellten Sicherheitstemperatur TSTB beispielsweise die Brennstoffventile des Brenners spannungslos, wodurch die Brennstoffzufuhr unterbrochen wird.
Selbstverständlich ist auch eine vollständige Integration von STB bzw. STW im Feuerungsautomaten möglich.
Der Regler 20 und der Feuerungsautomat 40 sind wie hier dargestellt über eine Kommunikationsschnittstelle (30) miteinander verbunden.
Als Komunikationsschnittstelle zwischen Regler und Feuerungsautomat kann z.B. ein Datenbus (elektrisch/optisch) oder auch eine drahtlose Funkverbindung eingesetzt werden. Ein Fühlerwert-/Testwert-Umschaltungsmodul 10 wird vorzugsweise vom Feuerungsautomaten durch ein Testanforderungssignal angesteuert.
Die Antwort auf die Testanforderung kann zusätzlich durch ein spezielles Attribut gekennzeichnet werden. Dadurch kann die Auswertung der Antwort durch den Feuerungsautomat erleichtert werden. Als Attribut zur Kennzeichnung der Antwort auf die Testanforderung kann beispielsweise eine aktuelle Zeitangabe verwendet werden. Alternativ könnte auch ein vom Regler generierter Zufallswert, der vom Feuerungsautomaten nachgeprüft wird, verwendet werden.
Die erste Testfunktion beinhaltet die Überprüfung der beiden Temperaturwerte T1 und T2, die zu diesem Zweck mit der Auslösetemperatur des Sicherheitstemperaturbegrenzers TSTB verglichen werden. Bei Erreichen bzw. Überschreiten von TSTB wird eine Störmeldung generiert und es erfolgt eine Abschaltung des Brenners durch den Feuerungsautomaten. Dabei erfolgt auch eine Verriegelung, falls gleichzeitig ein Einschaltbefehl vom Regler an den Feuerungsautomaten vorliegt.
mit den Testwerten TTest1 und TTest2
Entspricht hierbei das Vergleichsergebnis z.B. nicht einem Erwartungswert, so schaltet der Feuerungsautomat den Brenner ab und es wird eine Fehlermeldung generiert. Bei Ausbleiben einer Antwort auf die Testanforderung kann z.B. ein Ausfall des Referenzwiderstandes oder des Reglers oder eine Kommunikationsstörung vorliegen. In diesem Fall kann z.B. nach einer Zeitverzögerung die Verriegelung des Brenners durch den Feuerungsautomaten erfolgen.
Bleibt die Information, dass die Entriegelung erfolgreich war aus, so kann z.B. erst nach einer Zeitverzögerung ein erneuter Versuch zur Entriegelung zugelassen werden.
Claims (16)
- Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage, welche wenigstens einen Messfühler (Tk) aufweist, der mit einem Regler (20) verbunden ist, der über eine Kommunikationsschnittstelle (30) mit einem Feuerungsautomaten (40) in Verbindung steht, dadurch gekennzeichnet, dass der Feuerungsautomat (40) ein Sicherheits-Modul (41) aufweist, welches die vom Messfühler erfasste Temperatur, die an den Regler weitergeleitet und von diesem über die Kommunikationsschnittstelle an den Feuerungsautomaten übertragen wird mit einer im Sicherheits-Modul (41) gespeicherten maximal zulässigen Sicherheitstemperatur (TSTB) vergleicht und dass das Sicherheits-Modul (41) bei Erreichen bzw. Überschreiten der Sicherheitstemperatur ein Abschaltsignal generiert, welches eine Abschaltung der Anlage durch den Feuerungsautomaten bewirkt.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein weiterer Messfühler (Tk) vorgesehen ist, der mit dem Regler (20) verbunden ist.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Fühlerwert-/Testwert-Umschaltungsmodul (10) vorgesehen ist, welches wenigstens einen Schalter (15, 16) aufweist, der einen Referenzwiderstand (13, 14) parallel zu dem Messfühlerwiderstand (11, 12) schaltet und dass die Umschaltung zwischen Temperaturfühlerwiderstand (11, 12) und Referenzwiderstand (13, 14) vom Feuerungsautomaten (40) gesteuert wird.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass durch eine Testanforderungseinheit (42) des Feuerungsautomaten ein Testanforderungssignal an das Fühlerwert-/Testwert-Umschaltungsmodul (10) übertragen wird, wodurch wenigstens ein von dem Referenzwiderstand abgeleiteter Testwert (TTest1, TTest2) über die Kommunikationsschnittstelle an den Feuerungsautomaten (40) übertragen wird.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der vom Messfühler-/Referenzwiderstand (11,12,13,14) abgeleitete Fühler-/Testwert vom Regler (20) weiterverarbeitet wird, bevor dieser über die Kommunikationsschnittstelle (30) an den Feuerungsautomaten (40) übertragen wird.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass zur Weiterverarbeitung des Fühler-/Testwertes ein Multiplexer (21), ein Analog-Digital-Wandler (22), wenigstens ein Schieberegister (23, 25) und ein Linearisierungsmodul (24) vorgesehen sind.
- Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Kommunikationsschnittstelle (30) zur Verbindung des Reglers (20) mit dem Feuerungsautomaten (40) als Datenbus oder als Funkverbindung ausgeführt ist.
- Verfahren zur Überprüfung der Funktion insbesondere der Temperaturregel-/begrenzungsfunktion für eine Wärmeerzeugungsanlage, die wenigstens einen Messfühler (Tk) einen Regler (20), eine Kommunikationsschnittstelle (30) sowie einen Feuerungsautomaten (40) umfasst, wobei die von wenigstens einem Messfühler abgeleiteten Messwerte (T1 ,T2) an den Regler zur Weiterverarbeitung weitergeleitet und über die Kommunikationsschnittstelle an den Feuerungsautomaten übertragen werden, dadurch gekennzeichnet, dass der Feuerungsautomat die empfangen Messwerte (T1,T2) mit einer maximal zulässigen Sicherheitstemperatur (TSTB) vergleicht und dass bei Erreichen bzw. Überschreiten der Sicherheitstemperatur (TSTB) ein Abschaltsignal generiert wird.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass zur Funktionsüberprüfung der Messwerterfassung und/oder der Weiterverarbeitung der Messwerte und/oder der Übertragung der Messwerte vom Feuerungsautomaten ein Testanforderungssignal generiert wird und das innerhalb einer definierten Zeitdauer die Antwort auf die Testanforderung vom Feuerungsautomaten empfangen wird, die dann vom Feuerungsautomaten ausgewertet wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass die Antwort auf die Testanforderung mit einem speziellen Attribut versehen wird.
- Verfahren nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, dass die Antwort auf das Testanforderungssignal Testwerte (TTest1, TTest2) umfasst, die mit Referenzwerten (TRef1, TRef2) verglichen werden.
- Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass wenn der Vergleich zwischen Referenz- und Testwerten nicht einem Erwartungswert entspricht eine Fehlermeldung generiert wird oder dass ein Ausbleiben der Antwort auf die Testanforderung einen Ausfall des Messfühlerwiderstandes/Referenzwiderstandes oder des Reglers oder eine Kommunikationsstörung anzeigt und in diesem Fall nach einer Zeitverzögerung die Verriegelung des Brenners durch den Feuerungsautomaten erfolgt.
- Verfahren nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, dass die Messwerte (T1 ,T2) mit einer maximal zulässigen Temperaturdifferenz Tdiff verglichen werden und dass wenn diese Temperaturdifferenz einmal überschritten wird eine Sicherheitsabschaltung durch den Feuerungsautomaten erfolgt und dass wenn die zulässige Temperaturdifferenz innerhalb einer bestimmten Zeit erneut überschritten wird der Feuerungsautomat den Brenner verriegelt.
- Verfahren nach einem der Ansprüche 8 bis 13, dadurch gekennzeichnet, dass überprüft wird, ob nach Abschaltung des Brenners aufgrund eines Nachwärmeffektes die Sicherheitstemperatur (TSTB) überschritten wird und dass wenn dies der Fall ist, der Zählerstand (ZAus) eines Zählers inkrementiert wird und dass wenn der aktuelle Zählerstand (ZAus) einen vorgegebenen zulässigen Grenzwert (ZSTB) erreicht eine Verriegelung des Brenners durch den Feuerungsautomaten erfolgt.
- Verfahren nach einem der Ansprüche 8 bis 14, dadurch gekennzeichnet, dass zur Entriegelung eine Sicherheitsfunktion verwendet wird, die eine maximale Anzahl von Entriegelungen innerhalb einer definierten Zeitdauer erlaubt, wobei diese Funktion nur bei einer Entriegelung über die Kommunikationsschnittstelle wirksam ist.
- Verfahren nach einem der Ansprüche 8 bis 15, dadurch gekennzeichnet, dass die Fühler- und Testwerte als Datentelegramm periodisch und selbständig vom Regler an den Feuerungsautomaten übertragen werden oder asynchron als Antwort auf eine Anforderung des Feuerungsautomaten an diesen übertragen werden, wobei in beiden Fällen diese dann vom Feuerungsautomaten überprüft werden.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50308404T DE50308404D1 (de) | 2003-03-24 | 2003-03-24 | Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage |
EP03006570A EP1462724B1 (de) | 2003-03-24 | 2003-03-24 | Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage |
AT03006570T ATE376150T1 (de) | 2003-03-24 | 2003-03-24 | Vorrichtung zur temperaturregelung/-begrenzung für eine wärmeerzeugungsanlage |
PCT/EP2004/002834 WO2004085924A1 (de) | 2003-03-24 | 2004-03-18 | Vorrichtung zur temperaturregelung/-begrenzung für eine wärmeerzeugungsanlage |
EP04721538A EP1606555A1 (de) | 2003-03-24 | 2004-03-18 | Vorrichtung zur temperaturregelung/-begrenzung für eine wärmeerzeugungsanlage |
US10/550,281 US20070175624A1 (en) | 2003-03-24 | 2004-03-18 | Device for temperature regulation/limitation in a heat generating installation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03006570A EP1462724B1 (de) | 2003-03-24 | 2003-03-24 | Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1462724A1 true EP1462724A1 (de) | 2004-09-29 |
EP1462724B1 EP1462724B1 (de) | 2007-10-17 |
Family
ID=32798881
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03006570A Expired - Lifetime EP1462724B1 (de) | 2003-03-24 | 2003-03-24 | Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage |
EP04721538A Withdrawn EP1606555A1 (de) | 2003-03-24 | 2004-03-18 | Vorrichtung zur temperaturregelung/-begrenzung für eine wärmeerzeugungsanlage |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04721538A Withdrawn EP1606555A1 (de) | 2003-03-24 | 2004-03-18 | Vorrichtung zur temperaturregelung/-begrenzung für eine wärmeerzeugungsanlage |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070175624A1 (de) |
EP (2) | EP1462724B1 (de) |
AT (1) | ATE376150T1 (de) |
DE (1) | DE50308404D1 (de) |
WO (1) | WO2004085924A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007037299A1 (de) * | 2007-08-07 | 2009-02-19 | Continental Automotive Gmbh | Verfahren zum Überprüfen einer Messvorrichtung und Messvorrichtung |
CN113111507A (zh) * | 2021-04-08 | 2021-07-13 | 西安热工研究院有限公司 | 一种锅炉严重超温后蒸汽***材质安全性评估的方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10215405A1 (de) * | 2002-04-08 | 2003-10-16 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Funktionsprüfung eines Analog-Digital-Wandlers sowie Analog-Digital-Wandler |
ITPD20130186A1 (it) * | 2013-07-02 | 2015-01-03 | Sit La Precisa S P A Con Socio Uni Co | Metodo di controllo del funzionamento di un bruciatore |
US11549684B2 (en) * | 2018-08-27 | 2023-01-10 | Honeywell International Inc. | Burner system control |
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DE3248034A1 (de) * | 1982-12-24 | 1984-07-05 | Hewlett-Packard GmbH, 7030 Böblingen | Schaltungsanordnung zur temperaturmessung |
EP0326245A2 (de) * | 1988-01-21 | 1989-08-02 | Honeywell Inc. | Brennstoffbrenner Kontrollverfahren |
EP0614047A1 (de) * | 1993-03-05 | 1994-09-07 | Landis & Gyr Technology Innovation AG | Elektronische Steuer-und Regeleinrichtung für Gasbrenner von Heizungsanlagen |
DE19956426C1 (de) * | 1999-11-24 | 2001-05-03 | Honeywell Bv | Vorrichtung zur Überwachung der Wassertemperatur |
DE10114823A1 (de) * | 2001-03-26 | 2002-10-10 | Siemens Building Tech Ag | Verfahren und Vorrichtung zur Überwachung von Brennern |
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US2550507A (en) * | 1946-05-31 | 1951-04-24 | Gen Electric | Condition responsive, timing, and sequencing circuit control |
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US4280184A (en) * | 1979-06-26 | 1981-07-21 | Electronic Corporation Of America | Burner flame detection |
US4467178A (en) * | 1982-03-26 | 1984-08-21 | Swindle Elro M | Control system for regulating water heater operation in accordance with anticipated demand |
US4535931A (en) * | 1983-09-14 | 1985-08-20 | Kenneth W. Scott | Energy conserving water heater control system |
US4599992A (en) * | 1985-08-30 | 1986-07-15 | Harding John W | Anticipatory thermostat with reset for domestic hydronic boiler control |
US5619430A (en) * | 1995-10-10 | 1997-04-08 | Microchip Technology Inc. | Microcontroller with on-chip linear temperature sensor |
CA2371848A1 (en) * | 2002-02-14 | 2003-08-14 | Claude Lesage | Explosion proof gas water heater |
GB0408102D0 (en) * | 2004-04-08 | 2004-05-12 | Autoflame Eng Ltd | Total dissolved solids |
US7647895B2 (en) * | 2005-02-07 | 2010-01-19 | Emerson Electric Co. | Systems and methods for controlling a water heater |
-
2003
- 2003-03-24 EP EP03006570A patent/EP1462724B1/de not_active Expired - Lifetime
- 2003-03-24 DE DE50308404T patent/DE50308404D1/de not_active Expired - Lifetime
- 2003-03-24 AT AT03006570T patent/ATE376150T1/de not_active IP Right Cessation
-
2004
- 2004-03-18 EP EP04721538A patent/EP1606555A1/de not_active Withdrawn
- 2004-03-18 US US10/550,281 patent/US20070175624A1/en not_active Abandoned
- 2004-03-18 WO PCT/EP2004/002834 patent/WO2004085924A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3248034A1 (de) * | 1982-12-24 | 1984-07-05 | Hewlett-Packard GmbH, 7030 Böblingen | Schaltungsanordnung zur temperaturmessung |
EP0326245A2 (de) * | 1988-01-21 | 1989-08-02 | Honeywell Inc. | Brennstoffbrenner Kontrollverfahren |
EP0614047A1 (de) * | 1993-03-05 | 1994-09-07 | Landis & Gyr Technology Innovation AG | Elektronische Steuer-und Regeleinrichtung für Gasbrenner von Heizungsanlagen |
DE19956426C1 (de) * | 1999-11-24 | 2001-05-03 | Honeywell Bv | Vorrichtung zur Überwachung der Wassertemperatur |
DE10114823A1 (de) * | 2001-03-26 | 2002-10-10 | Siemens Building Tech Ag | Verfahren und Vorrichtung zur Überwachung von Brennern |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007037299A1 (de) * | 2007-08-07 | 2009-02-19 | Continental Automotive Gmbh | Verfahren zum Überprüfen einer Messvorrichtung und Messvorrichtung |
DE102007037299B4 (de) * | 2007-08-07 | 2013-10-24 | Continental Automotive Gmbh | Verfahren zum Überprüfen einer Messvorrichtung und Messvorrichtung eines Sicherheitssystems in einem Fahrzeug |
CN113111507A (zh) * | 2021-04-08 | 2021-07-13 | 西安热工研究院有限公司 | 一种锅炉严重超温后蒸汽***材质安全性评估的方法 |
CN113111507B (zh) * | 2021-04-08 | 2023-05-30 | 西安热工研究院有限公司 | 一种锅炉严重超温后蒸汽***材质安全性评估的方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1606555A1 (de) | 2005-12-21 |
ATE376150T1 (de) | 2007-11-15 |
DE50308404D1 (de) | 2007-11-29 |
WO2004085924A1 (de) | 2004-10-07 |
US20070175624A1 (en) | 2007-08-02 |
EP1462724B1 (de) | 2007-10-17 |
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