EP0614047B1 - Elektronische Steuer-und Regeleinrichtung für Gasbrenner von Heizungsanlagen - Google Patents
Elektronische Steuer-und Regeleinrichtung für Gasbrenner von Heizungsanlagen Download PDFInfo
- Publication number
- EP0614047B1 EP0614047B1 EP93114750A EP93114750A EP0614047B1 EP 0614047 B1 EP0614047 B1 EP 0614047B1 EP 93114750 A EP93114750 A EP 93114750A EP 93114750 A EP93114750 A EP 93114750A EP 0614047 B1 EP0614047 B1 EP 0614047B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- microcomputer
- temperature
- air pressure
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
- F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
- F23N1/10—Regulating fuel supply conjointly with another medium, e.g. boiler water and with air supply or draught
- F23N1/102—Regulating fuel supply conjointly with another medium, e.g. boiler water and with air supply or draught using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/08—Regulating air supply or draught by power-assisted systems
- F23N3/082—Regulating air supply or draught by power-assisted systems using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/08—Microprocessor; Microcomputer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/12—Measuring temperature room temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/13—Measuring temperature outdoor temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/16—Measuring temperature burner temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/20—Measuring temperature entrant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/04—Prepurge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
Definitions
- the invention relates to an electronic control device for heating systems in the preamble of the claim 1 genus mentioned.
- Such control devices are known as automatic firing devices known (Sarkowski, oil fire control technology, 1964).
- the supply of air to the burner is controlled since the heating chamber must first be flushed with air.
- the blower for the air is used in the known control device driven by a constant speed motor and the amount of air delivered per unit of time is determined by a Throttle valve controlled, which uses a microcomputer can.
- An additional one is used for the actual heating operation Regulator used, which in turn a microcomputer can have.
- valves for the Air on the one hand and for the fuel on the other To control motors each with an interface to one have associated logic circuits of two, which are connected to a microprocessor.
- a gas-operated instantaneous water heater is also known (EP-A-73 717), in which a pilot flame must burn continuously.
- a burner control system which includes a central microprocessor Input signals from temperature sensors, gas and water flow meters and receives a tachometer of the blower.
- the invention has for its object such a device to simplify without the safety regulations be disregarded.
- the microcomputer the burner control takes on additional tasks; its control signals serve both to control the burner start-up program of the burner control as well as for regulation in the heating phase of the temperature controller.
- temperature monitor tasks can be fulfilled by the same institution:
- the microcomputer or the one equipped with the microcomputer Device is provided with a signal generator that especially pulse width modulated, i.e. digital control signals generates which both a DC motor of the blower during the preparation phase in which the burner control has to fulfill its main task, as well as during the actual regular operation, i.e. in the heating phase, and thereby control the air supply to the burner.
- the microcomputer or the one equipped with it To provide a facility with a comparator, which the Actual speed values of the DC motor or fan with in stored in memory, i.e. predetermined by a program Speed limit or setpoint values are compared. Dependent on The control signals depend on the type and / or size of the difference values triggered or influenced.
- the Microcomputer or the device equipped with it also the Controller that affects the signal generator so that during the operating time of the burner depending on the burner output regulating parameters also control signals to the DC motor of the blower are delivered, which in turn are preferably pulse width modulated.
- the speed of the fan is not regulated directly, which is why a separate control loop is unnecessary for the drive motor. Still finds one Correction of the speed etc.
- blower motor is equipped with a specific power requirement Control signal applied to achieve a certain speed. If this was not achieved, then inevitably that would also be the case performance requirement in question not reached, so because of the remaining temperature control difference the power requirement is automatically increased.
- the speed of the blower is in particular a Hall sensor as a speed sensor in the drive motor of the fan. If the fan speed exceeds a minimum speed and is also a minimum air pressure as a limit or setpoint on the burner, which is achieved by a pressure sensor can be determined, then the pre-rinse time can begin, in which the Microprocessor ensures that the blower runs at high speed runs to the boiler room and the fireplace well within a short time flush with air.
- the invention also makes the use of direct speed control in the form of a separate control circuit unnecessary, as has already been stated.
- a further simplification of the invention is made possible by the fact that the function of a temperature monitor is also integrated, which makes an external thermostat unnecessary.
- the existing boiler sensor which determines the boiler water temperature T K , is used as an actual value transmitter for the monitor function. As a result, synergistic effects are achieved.
- the Burner controls such as obtaining test results from Function tests and the output of ignition signals to the ignition electrodes the burner to use another microcomputer because of the smaller number or the smaller size of the tasks are chosen in a cheaper modification can.
- This additional microcomputer then becomes the main microcomputer connected by data exchange lines.
- the other The microcomputer can be provided with an automatic timer or work together to deliver control signals for a to interrupt or release a certain period of time.
- the control device which is equipped with electronic components and is distributed, for example, on two printed circuit boards, is provided with a microcomputer MC, which both fulfills the functions of the burner control unit for burner B and also controls the temperature of the heating boiler HK as a function of the heat requirement.
- a further smaller microcomputer MC1 can have a data exchange relationship with the microcomputer MC, which has an automatic time switch which enables the delivery of control signals, for example an ignition signal Z, for a specific period of time.
- the flame sensor F F emits output signals both to the microcomputer MC and to the other microcomputer MC1 used for monitoring purposes.
- a setting device "Settings” enables the programming of the microcomputer MC by entering data into the memory SP (EEPROM).
- the microcomputer MC initiates, in particular, pulse-width-modulated control signals S ST in the signal generator SG, while the comparator V e compares the actual speed value n with the programmed speed setpoint values n TARGET in order to initiate corresponding functions in the event of deviations or undershoots, Carry out lockouts or prevent certain processes from starting.
- a single signal generator SG is sufficient to generate and deliver the pulse-width-modulated control signals S ST , which are used both for controlling the start-up program, ie the preparation phase (in the function as an automatic burner control unit) and for regulating during burner operation (in the function as a temperature controller), ie in the heating phase.
- the control signals S ST are supplied in both phases to the direct current motor M G of the fan G, which is located in the connecting line VL to the burner B and builds up the pressure P A of the supplied air A at the burner B.
- The, sensed by the speed sensor F n, in particular a Hall sensor on the DC motor M G actual rotational speed values N are evaluated both in its function as a burner control as well as in the function as a controller.
- the burner B (FIG. 2) is switched off due to the temperature monitor function as soon as the boiler water temperature T K reaches a maximum limit value TK max , as is shown schematically in FIG. 5 by the switch-off point of the monitor curve d.
- the temperature monitor releases operation again as soon as the release point of the monitor curve c is reached.
- the target temperature (setting value) for the boiler water temperature TK SOLL which can be set on the setpoint potentiometer , is plotted on the abscissa, while the switching point according to the actual value of the boiler water temperature T KIST is plotted on the ordinate.
- the heating circuit pump When the temperature monitor responds in accordance with the monitor curve d, the heating circuit pump is switched on (burner B had already been switched off when the temperature rose before the control curve b was exceeded). The heating circuit pump now remains in operation until the guard curve c is undershot. After falling below the guard curve c, the controller R can take over the burner control again. The burner start is triggered immediately after the switch-on curve a. Commissioning by a two-point controller R takes place according to curve a and the decommissioning by two-point controller R according to curve b. When commissioned by the two-point controller R in accordance with the controller curve a, the burner B starts with full power, for example, because at that moment the control deviation between the setpoint and actual value reaches its maximum size.
- the burner output can advantageously be reduced to 33 to 10% of the nominal output according to a selected degree of modulation 1: 3 to 1:10. It is thereby advantageously achieved that the burner B burns only at a low power at the moment of switching off given by the control curve b, so that an overshoot of the temperature turns out to be very small even if the heat requirement suddenly decreases. This reliably prevents the response of a safety temperature limiter present in such systems.
- the flow water pump runs for the set time. If the temperature monitor switches off, the pump runs until the release temperature (c) is reached.
- the watchdog function is also at switched off burner B active and also activates the pump due to "residual heat".
- combustible fluid F flows via a feed line ZL to the burner B of a heating boiler HK.
- the pressure of the fluid F is regulated by a valve V, in particular a pneumatic pressure regulator as a function of the air pressure P A on the burner, maW: the gas pressure P F is tracked to the air pressure P A , which is determined by the fan speed, ie the speed n of the DC motor M G is controlled, which in this example can be driven with 39 volts DC and can be set at speeds of up to 22 VA at speeds between approximately 200 and 6000 rpm.
- the valve V could also be formed by a ratio regulator.
- air A is conducted to burner B via the connecting line VL.
- the air pressure P A in the connecting line VL is determined by the air pressure sensor F A. This does not necessarily output analog (corresponding to the actual air pressure P A ) output signals to the comparator Ve, but an air pressure present signal LP is sufficient when a specific air pressure setpoint or limit value P AG is reached in the connecting line VL. If this limit value P has not yet been reached, then no air pressure present signal LP occurs.
- the air pressure P A can be adjusted by the speed of the fan G, which is driven, for example, by a 39 V DC motor M. The speed of which can be sensed as the actual speed value n ACT using a speed sensor F n , in particular the Hall sensor.
- the temperature control and the preparation phase are controlled by the controller R.
- this controls, for example, the air supply as a function of actual temperature values, for example the room temperature T R , the boiler temperature T K , the outside temperature T A and / or the flow temperature T V , which are fed to controller R via an analog-to-analog / digital converter A / D, where they are set in relation to setpoint values T RSOLL .
- the controller R generates an output signal which corresponds to the speed setpoint n SET and is compared in the comparator V e with the actual speed value n ACT .
- control unit St G is influenced, which in turn generates corresponding control signals S ST .
- control signals S ST are, in particular, pulse width modulated digital signals and control the speeds of the direct current motor M G.
- the pressure P F for the combustible fluid F is regulated here as a function of the air pressure P A by controlling the regulator drive V.
- the controller part of the control device issues a start command to the burner control part thereof by the message "heat request" WA when the temperature T K in the process water circuit or in the heating circuit has dropped below a minimum value.
- the direct current motor M G of the blower G is acted upon with, in particular, pulse-width-modulated control signals S, so that its speed n ACT increases to a maximum value as soon as an (adjustable) setpoint (speed setpoint n SET ) is reached and the air pressure detector F A closes its contact and emits an air pressure present signal LP.
- the pre-rinse time tv begins. At this time, a certain air pressure P A is reached in the connecting line VL.
- the automatic burner control can continue its function program when the required minimum values are reached. If the speed and / or the air pressure have not reached the predetermined limit value at the start of the pre-purge time tv (no LP available), a lockout occurs.
- the speed n IST of the fan G should exceed a minimum value of, for example, 2400 rpm during the pre-purge time tv.
- the speed of the fan G is reduced in accordance with lower pulse-width-modulated control signals S ST .
- An ignition signal Z is then applied to an ignition unit of the burner B during the ignition time tz, for example to ignition electrodes thereof, while the fan G continues to run at a speed of, for example, 40% of the maximum speed, but does not exceed the maximum value of 2900 rpm in this example.
- the valve in the supply line ZL opens, ie the adjusting unit V for the combustible fluid F, whereby the safety time ts begins, within which a flame signal must be detected by a flame sensor F F , otherwise the lockout occurs.
- This safety time ts is, for example, up to 10 s, while the pre-rinsing time tv can be, for example, up to 50 s and the maximum braking time tbre is also of this order of magnitude.
- the transition to the operating position takes place and the burner operating time tb begins, during which the fan speed n ACT in dependence on the pulse-width-modulated control signals S ST and this in turn in dependence on the output signals specified by controller R in one
- the speed range can be regulated, which is between approximately 600 and 6000 rpm, as the maximum value specification and plausibility limit, while the maximum speed is typically 4000 rpm.
- the burner operating time tb it is generally not necessary to monitor the air pressure, since the speed sensor Fn with its output signals regularly offers sufficient security.
- the burner operation is set by the controller R at the time C by switching off the supply of combustible fluid F to the burner B by the setting element V.
- the fan G can remain in operation in order to blow off combustion residues.
- the fan speed n ACT is ramped up to full load (programmable), whereupon the home run follows as a regular transition to the standby phase.
- FIG. 4 A particularly preferred variant of the invention, which also has its own inventive meaning is shown in FIG. 4 explains:
- the microcomputer MC is connected via the resistor R to the flame sensor F F. If the signal emitted (or not emitted) by the flame sensor F F to the microcomputer MC does not match the value stored in the microcomputer MC, which expresses a malfunction, the microcomputer MC outputs an output signal to the control units SA and SA1, which in turn switch S and S1 in that process circuit P and, in the absence of a flame sensor signal that is necessary per se, the process in question, such as the introduction of gas into burner B, is interrupted.
- the signal from the flame sensor F F is also passed in parallel to the branch leading via the resistor R to the microcomputer MC, namely via the further resistor R1 to the further microcomputer MC 1, which can, but does not have to, have a data exchange connection with the first microcomputer MC. If this additional microcomputer MC1 also detects a malfunction due to the absence (or occurrence) of output signals from the flame sensor F F , then it outputs an output signal to the control units SA and SA1, which in turn control further switches S and S1, which are connected in series Process circuit P, here a relay for the gas valve V, are. Normally, switch S1 also responds when switch S responds. If, however, an error occurs in one of the two shutdown circuits, the process circuit P is nevertheless shut down, specifically via the second shutdown circuit by means of the further switch S1. This parallel connection of two monitoring circuits therefore ensures increased security.
- This security is based on a further embodiment of the invention then enlarged when the further microcomputer MC1 constructed differently, for example with other electronic ones Components is assembled and especially if it is different is programmed as the first microcomputer MC.
- the further microcomputer MC1 constructed differently, for example with other electronic ones Components is assembled and especially if it is different is programmed as the first microcomputer MC.
- An advantage of this integration of the electronic control device is that it is unnecessary to use a separate control device with the associated components on the one hand for the burner control and on the other hand for the temperature controller.
- a single signal generator SG is sufficient to generate and deliver the pulse-width-modulated control signals S ST , which perform their task both for controlling the start-up program (in the function as an automatic burner control unit) and for regulating the temperature during burner operation (in the function as a controller).
- the n sensed actual rpm values n IS the Hall speed sensor F are not only evaluated during the start-up program (function as automatic firing), but also during the regular burner operation to control and regulate.
- the air pressure switch or sensor F A ensures that when the burner controls are operated, ie in the "start-up phase", sufficient air pressure is always built up for purging the burner chamber and chimney. If there is a great demand for heat during normal operation, e.g. by switching on additional radiators and tap water, which requires a high speed of the fan G and - depending on this - the gas pressure P F , then it is advisable to check the air pressure sensor F A if a certain one is exceeded Speed setpoint n SET .
- Speed setpoint n SET During the operation of the temperature controller R, uz in modulating operation, the speed of the fan G can decrease so much with a low heat requirement that the air pressure sensor F A no longer responds. In this case, the use of an additional air pressure sensor could be recommended, which responds to lower air pressure corresponding to a lower fan speed.
- One or the other air pressure sensor can then be used depending on the speed range.
- the air pressure sensor F A also responds to the safety test, according to which there is a brief switch-off and restart at least once every 24 hours using the automatic burner control.
- the temperature sensor for the boiler temperature T K which is integrated in the temperature monitor function, is connected to the analog / digital converter A / D via a circuit F consisting of a filter and a series resistor and via an input circuit E. which is at the entrance of the microcomputer MC or in this itself.
- the connection point between the circuit F of filter and series resistor and the input circuit E of the analog / digital converter A / D is connected to ground on the one hand via a switch S4 and to voltage U with, for example, 5 V via another switch S3.
- the microcomputer MC now carries out a rough test of the A / D conversion in that it closes the switch S3 one after the other, for example first, in order to close the voltage U of 5V and then, when the switch S3 is open again, the switch S4 to connect ground via the input circuit E to the analog / digital converter A / D.
- the A / D conversion with regard to the correct choice of the A / D channel and with regard to the correct result must result in the A / D conversion result matching the known expected value (FF or 0).
- the invention surprisingly achieves also a simplification of the function. So there is no need mutual interlocking separate construction units, because of Microcomputer does not follow commands from the controller as long as the Automatic burner control after a starting process (start-up phase) Program is running.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
- Regulation And Control Of Combustion (AREA)
Description
- Figur 1
- eine schematische Darstellung der elektronischen Steuereinrichtung, mit der die drei Aufgaben sowohl eines Feuerungsautomaten als auch eines Temperaturreglers sowie eines Temperaturwächters in integrierter Bauweise nach der Erfindung lösbar sind;
- Figur 2
- ein schematisches Schaubild einer erfindungsgemäßen Steuereinrichtung,
- Figur 3
- ein zeitabhängiges Ablaufdiagramm von Funktionen von Aggregaten der Steuereinrichtung nämlich in der Vorbereitungsphase als Feuerungsautomat und in der Heizungsphase als Temperaturregler und Feuerungsautomat;
- Figur 4
- eine schematische Darstellung einer bevorzugten die Sicherheit erhöhenden Ausbildung der Erfindung;
- Figur 5
- die Lage der Schaltdifferenz in Bezug auf den Einstellwert der Kesselwassersolltemperatur sowie die Begrenzung durch den Temperaturwächter und
- Figur 6
- eine schematische Darstellung einer Testschaltung für die Funktion des Temperaturwächters.
- WA:
- die Wärmeanforderung durch den Regler
- FS:
- Flammensignal
- LP:
- Luftdruck-Präsent-Signal des externen Luftdruckprüfers (Kontakt) FA
- STB:
- Sicherheitstemperaturbegrenzer
- V:
- Gasventil in der Zuleitung ZL
- Z:
- Zündsignal zum Zündaggregat
- SST:
- Steuersignal zum Gleichstrommotor des Gebläses
- nIST :
- Drehzahl-Istwert abgeleitet vom Halldrehzahlfühler Fn
- thl:
- Zeit zum Hochlaufen des Gebläses G
- tv:
- Vorspülzeit
- tbre:
- Bremszeit für das Gebläse G
- tz:
- Zündzeit
- ts:
- Sicherheitszeit
- tb:
- Betriebszeit der Temperaturregelung
- tn:
- Nachspülzeit
- t:
- Zeit
- A:
- Startbefehl (Reglereinschaltung)
- B:
- Beginn des Brennerbetriebs
- C:
- Beginn der Außerbetriebsetzung
- D:
- Ende der Außerbetriebsetzung und Übergang in die Heimlaufzeit
Claims (14)
- Elektronische Steuer- und Regeleinrichtung für Heizungsanlagenmit einem Brenner (B),mit einem Antriebsmotor (MG) für ein Luftzufuhr-Gebläse (G) zum Brenner (B),mit einer Zündeinrichtung für den Brenner (B),mit einer Zeitschaltautomatik einschließlich eines Feuerungsautomaten, in dem mindestens eine vorbestimmte Sicherheitszeit (ts) für das Brenneranlaufprogramm programmierbar ist, innerhalb welcher bestimmte z.B. durch einen Flammen fühler ermittelbare Brennerbedingungen zu erfüllen sind,mit einer Signalerzeugungseinrichtung zum Erzeugen von Antriebsmotor-Steuersignalen (SST) und von Zünd-Steuersignalen (Z) in Abhängigkeit von in einer Speichereinrichtung gespeicherten Grenzwert- bzw. Sollwertdaten und in Abhängigkeit von durch Fühler ermittelten Istwertdaten und mit einem Temperaturregler (R) zum Regeln der Kesselwassertemperatur (TK) und/oder der Vorlauftemperatur (TV) der Heizungsanlage in der Heizphase in Abhängigkeit von Parametern, wie der Raumtemperatur (TR) und der Außentemperatur (TA),die Integration des Feuerungsautomaten und des Temperaturreglers (R) zu einer einheitlichen elektronischen Einrichtung mit der Maßgabe,daß bei Anwendung eines Gasbrenners als Brenner (B) ein Signalgenerator (SG) eines mit der Speichereinrichtung verknüpften Microcomputers (MC) Steuersignale (SST) sowohl zur Steuerung des Brenneranlaufprogramms des Feuerungsautomaten als auch zur Regelung in der Heizphase mittels des Temperaturreglers (R) erzeugt, die über ein und dieselbe Schnittstelle (SS) an den Antriebsmotor (MG) des Luftzufuhrgebläses (G) gelangen.
- Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Antriebsmotor (MG) hinsichtlich seiner Leistung steuerbar ist. - Einrichtung nach Anspruch 1 oder 2, mit einem Temperaturwächter zum Überwachen der Kesselwassertemperatur,
dadurch gekennzeichnet,
daß auch der Temperaturwächter mit dem Feuerungsautomaten und dem Temperaturregler (R) zu der einheitlichen elektronischen Einrichtung integriert ist. - Einrichtung nach Anspruch 3,
dadurch gekeennzeichnet,
daß das Ausgangssignal des integrierten Temperaturwächters vom Temperaturfühler der Kesselwassertemperatur (TK) abgeleitet ist. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Mikrocomputer (MC) digitale pulsweitenmodulierte Steuersignale (SST) an den als Gleichstrommotor ausgebildeten Antriebsmotor (MG) abgibt. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Mikrocomputer (MC) mit einem weiteren Mikrocomputer (MC1) Daten austauscht, der zusätzliche Überwachungsaufgaben eines Feuerungsautomaten erfüllt. - Einrichtung nach Anspruch 6,
dadurch gekennzeichnet,
daß der weitere Mikrocomputer (MC1) ebenfalls mit einer Zeitschaltautomatik versehen ist, welche die Abgabe von Steuersignalen für eine bestimmte Zeitdauer unterbricht bzw. freigibt. - Einrichtung nach Ansprüche 6 oder 7,
dadurch gekennzeichnet,
daß beide Mikrocomputer (MC und MC1) hinsichtlich der von diesen bedienten Überwachungskreisen parallel geschaltet sind, so daß wenigstens einer der Mikrocomputer (MC, MC1) bei Ausfall des anderen Überwachungskreises bzw. Mikrocomputers die Heizungsanlage in einen sicheren Zustand steuert. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet
daß ein Druckregler (V) den Druck (PF) eines brennbaren Fluidums (F), das über eine Zuleitung (ZL) zum Brenner (B) eines Heizkessels (HK) strömt, in Abhängigkeit vom Luftdruck (PA) regelt. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Mikrocomputer (MC) einen Vergleicher (Ve) und einen Regler (R) aufweist und daß der Vergleicher (Ve) von einem Drehzahlfühler (Fn) erzeugte Drehzahl-Istwerte (nIST) des Gebläses (G) mit im Speicher (SP) gespeicherten Drehzahl-Grenz- bzw. Sollwerten (nSOLL) vergleicht und in Abhängigkeit von Art und/oder Größe der Differenzwerte Steuersignale (SST) auslöst oder beeinflußt. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß ein Hallsensor als Drehzahlfühler (Fn) dient. - Einrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß der Mikrocomputer (MC) von einem Luftdruckfühler (FA) abgefühlte Luftdruck-Werte (PAG, LP) in der Verbindungsleitung (VL) zwischen dem Gebläse (G) und dem Brenner (B) mit einem gespeicherten Luftdruck-Grenzwert (P'AG) vergleicht und in Abhängigkeit von Art und/oder Größe des Differenzwerts Störabschaltung oder Startverhinderung auslöst. - Steuereinrichtung nach Anspruch 12,
dadurch gekennzeichnet,
daß dann eine Abfragung des als Luftdruckwächter wirksamen Luftdruckfühlers (FA) erfolgt, wenn der aktuelle Drehzahl-Sollwert (nSOLL) für eine bestimmte Zeit größer ist als ein bestimmter vorgegebener Drehzahl-Sollwert (nSOLL) als Indikation für hohe Wärmeanforderung (WA). - Einrichtung nach einem der Ansprüche 6 bis 13,
dadurch gekennzeichnet,
daß der weitere Mikrocomputer (MC1) ungleich dem ersten Mikrocomputer (MC) aufgebaut und programmiert ist und mit dem ersten Mikrocomputer (MC) Überwachungsaufgaben erfüllt sowie in Serie in den betreffenden Prozeßschaltkreis (P) geschaltete Schalter (S, S1) steuert.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH662/93 | 1993-03-05 | ||
CH66293 | 1993-03-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0614047A1 EP0614047A1 (de) | 1994-09-07 |
EP0614047B1 true EP0614047B1 (de) | 1999-01-13 |
Family
ID=4192216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93114750A Expired - Lifetime EP0614047B1 (de) | 1993-03-05 | 1993-09-14 | Elektronische Steuer-und Regeleinrichtung für Gasbrenner von Heizungsanlagen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0614047B1 (de) |
DE (2) | DE9310458U1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19518445A1 (de) * | 1995-05-19 | 1996-11-21 | Meissner & Wurst | Reinraumanlage |
KR100295087B1 (ko) * | 1995-09-27 | 2001-09-17 | 전주범 | 가스보일러의역풍감지방법 |
DE19633317A1 (de) * | 1996-08-19 | 1998-02-26 | Kromschroeder Ag G | Regelanordnung für einen Brenner |
DE19860399A1 (de) * | 1998-12-28 | 2000-07-06 | Bosch Gmbh Robert | Steuereinrichtung für einen Brenner |
DE10159033B4 (de) * | 2000-12-01 | 2012-08-16 | Vaillant Gmbh | Regelungsverfahren für Heizungsgeräte |
US6536678B2 (en) | 2000-12-15 | 2003-03-25 | Honeywell International Inc. | Boiler control system and method |
DE10148642B4 (de) * | 2001-10-02 | 2006-04-27 | Robert Seuffer Gmbh & Co. Kg | Kochherd mit einer Bedieneinheit zum Bedienen wenigstens einer von einem Gasbrenner beheizten Kochstelle |
EP1462724B1 (de) * | 2003-03-24 | 2007-10-17 | Siemens Schweiz AG | Vorrichtung zur Temperaturregelung/-begrenzung für eine Wärmeerzeugungsanlage |
DE102004013971B4 (de) * | 2004-03-19 | 2008-07-17 | Rational Ag | Brennereinrichtung für ein Gargerät und Gargerät mit solch einer Brennereinrichtung |
US7819334B2 (en) | 2004-03-25 | 2010-10-26 | Honeywell International Inc. | Multi-stage boiler staging and modulation control methods and controllers |
US8251297B2 (en) | 2004-04-16 | 2012-08-28 | Honeywell International Inc. | Multi-stage boiler system control methods and devices |
WO2017140906A1 (en) | 2016-02-19 | 2017-08-24 | Haldor Topsøe A/S | Over firing protection of combustion unit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0315053A1 (de) * | 1987-11-06 | 1989-05-10 | Joh. Vaillant GmbH u. Co. | Feuerungsautomat |
EP0480312A1 (de) * | 1990-10-10 | 1992-04-15 | Honeywell B.V. | Luftstromüberwachungseinrichtung für Brenneranlagen |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4348169A (en) | 1978-05-24 | 1982-09-07 | Land Combustion Limited | Control of burners |
FR2512179A1 (fr) * | 1981-08-27 | 1983-03-04 | Sdecc | Chaudiere a gaz etanche a tirage force avec regulation par microprocesseur |
JPS63169421A (ja) * | 1986-12-27 | 1988-07-13 | Isuzu Motors Ltd | 暖房器の燃焼制御装置 |
JPS63318417A (ja) * | 1987-06-19 | 1988-12-27 | Matsushita Electric Ind Co Ltd | 強制給排気式暖房機の制御装置 |
JPS6484020A (en) * | 1987-09-26 | 1989-03-29 | Noritz Corp | Combustion control device |
JPH01252819A (ja) * | 1988-03-30 | 1989-10-09 | Harman Co Ltd | 燃焼装置 |
JPH01302027A (ja) * | 1988-05-31 | 1989-12-06 | Rinnai Corp | 燃焼制御装置 |
JPH0221123A (ja) * | 1988-07-11 | 1990-01-24 | Matsushita Electric Ind Co Ltd | 給湯器の制御装置 |
JP2688071B2 (ja) * | 1988-08-26 | 1997-12-08 | 松下電器産業株式会社 | 送風機の制御装置 |
DE4007699A1 (de) * | 1990-03-10 | 1991-09-12 | Hella Kg Hueck & Co | Mit brennstoff gespeiste zusatz-heizeinrichtung fuer kraftfahrzeuge |
-
1993
- 1993-07-13 DE DE9310458U patent/DE9310458U1/de not_active Expired - Lifetime
- 1993-09-14 DE DE59309307T patent/DE59309307D1/de not_active Expired - Lifetime
- 1993-09-14 EP EP93114750A patent/EP0614047B1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0315053A1 (de) * | 1987-11-06 | 1989-05-10 | Joh. Vaillant GmbH u. Co. | Feuerungsautomat |
EP0480312A1 (de) * | 1990-10-10 | 1992-04-15 | Honeywell B.V. | Luftstromüberwachungseinrichtung für Brenneranlagen |
Also Published As
Publication number | Publication date |
---|---|
EP0614047A1 (de) | 1994-09-07 |
DE9310458U1 (de) | 1994-06-30 |
DE59309307D1 (de) | 1999-02-25 |
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