EP0616172A1 - Dispositif de signalisation des conditions d'opération et de défaillance dans un brûleur - Google Patents

Dispositif de signalisation des conditions d'opération et de défaillance dans un brûleur Download PDF

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Publication number
EP0616172A1
EP0616172A1 EP94103178A EP94103178A EP0616172A1 EP 0616172 A1 EP0616172 A1 EP 0616172A1 EP 94103178 A EP94103178 A EP 94103178A EP 94103178 A EP94103178 A EP 94103178A EP 0616172 A1 EP0616172 A1 EP 0616172A1
Authority
EP
European Patent Office
Prior art keywords
burner
failure
time
stage
control
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.)
Withdrawn
Application number
EP94103178A
Other languages
German (de)
English (en)
Inventor
Luciano Bianchini
Paolo Bolognin
Alberto Fantoni
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.)
RBL Riello Bruciatori Legnago SpA
Original Assignee
RBL Riello Bruciatori Legnago SpA
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 RBL Riello Bruciatori Legnago SpA filed Critical RBL Riello Bruciatori Legnago SpA
Publication of EP0616172A1 publication Critical patent/EP0616172A1/fr
Withdrawn legal-status Critical Current

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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
    • F23N5/24—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
    • 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
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/22—Timing network
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/20—Warning devices

Definitions

  • the invention concerns a device for showing the operation conditions and the failures in a burner burning fuel of any kind.
  • each burner is equipped with devices for controlling and monitoring its operation which, besides controlling the sequence of the various operation phases of the burner, interrupt the operation in the presence of anomalous conditions.
  • control box In which the control and monitoring circuits usually signal only the eventual failure of the burner with a proper luminous device.
  • the monitoring and safety devices foreseen by such rules are provided only with the luminous signal in case of a performance failure, but they present an important limit in that most of them do not make evident the instant or the cycle phase in which the failure has occurred. This fact is not of minor importance since the operation sequences, typical of each control and monitoring device of the burner, would permit to diagnose exactly the cause of the failure if it were possible to know the instant or the period in which said failure has occurred and, therefore, it would be possible to make some target interventions which would save time, as a consequence.
  • the purpose of the present invention is to overcome the limits now mentioned.
  • the main purpose is that of obtaining a device for showing the operation conditions and the failures in a burner, which combines the signaling of the failure with the signaling of the time when said failure has occurred.
  • Another purpose of the present invention is that of obtaining the device according to the invention insertable in any burner, so that said device works in addition to the already existing device and is compatible with the same.
  • Another purpose is that of obtaining the device according to the invention at low costs and make it easy to connect with the control and monitoring devices already present in the burners, without the external circuits having to undergo any modifications.
  • the device for showing the operation conditions and the failures in a burner which, in accordance with the invention, is characterized in that it comprises, in combination:
  • the electrical signals are drawn from significant spots of the control and monitoring instrumentation belonging to the burner and are processed by an electronic circuit with the help of a microprocessor, so that said signals, previously made compatible with the microprocessor logic itself, after being elaborated by the same, cause the leds of a signal board to switch on, switch off or flash, while the microprocessor has also a clock function and activates a display for the time count.
  • the microprocessor beside counting the time which elapses from the start until the occurrence of the failure, also counts the total number of hours during which of the valve belonging to the first and/or second stage of the burner remains open, so that the information for the failure diagnosis takes also into consideration the actual hours of operation of the burner.
  • the signaling device essentially consists of an electronic circuit and a visualization board, as indicated in Fig. 2, which comprises a display 10 with four digits and six leds indicated with the letters from 1 to 6.
  • the first led indicated with 1 when lit, shows the presence of the mains voltage in the control device of the burner.
  • the led indicated with 2 is activated by the electric signal coming from the circuit which shows an interruption in the burner operation, which has occurred because of a failure of the fan motor of the burner.
  • the led indicated with 3 when lit, shows the failure of the burner.
  • the led indicated with 4 when lit, shows the operation of the second stage, while the led will flash if the failure of the burner occurs during the passage to the second stage or during the operation in the second stage.
  • the led indicated with 5 remains lit during the operation of the first stage and it will flash instead, if the burner fails during the passage from the second to the first stage or during the operation in the first stage.
  • Fig. 3 illustrates some situations with the purpose of pointing out how by associating the indication of the time when a certain event has occurred with the information of the event occurrence, one is led to different conclusions regarding the diagnostic of the failure.
  • Fig. 3 represents the event, indicated with A, in which a failure of the burner occurs causing the light of the led 3 to switch on and the led 6 to flash.
  • the time indicated which in this case is visualized with "0"
  • the failure has occurred at the very start, before counting procedure has even started. Since the control and monitoring board of the burner has not given the consent to start the count, this means that a definite cause has prevented the electric circuit from beginning the starting phase, and this happens for instance, when the flame monitor of the burner has detected the flame presence in the combustion chamber before the starting.
  • the E event with the switching on of the failure light 3 and of light 6, associated with a time count T being shorter than the total amount of time of the burner starting, indicates that the failure has occurred during the preventilation phase.
  • the indication in C1 of the T time which is shorter than the starting time, as compared with the indication in C2 of the display showing with the digits "1111' the end of the starting time, shows that the occurrence of the event is different, since in the C1 case, the burner has failed during the starting phase in the passage to the second stage.
  • Fig. 4 shows a block diagram of the electronic circuit realizing the integration among the input signals 15, 25, 35, 45, 55 and 65 taken from the "control box" 11 or control and monitoring circuit of the burner and which indicate the presence of the mains voltage for 15, the failure of the fan motor for 25, the failure of the burner for 35, the operation of the second stage for 45, the operation of the first stage for 55 and the reached load for 65.
  • Such signals are processed in an input circuit 20 so that each kind of signal can be adjusted with the logic of the electronic circuit 23 and with the microprocessor 24 contained in it.
  • the signals coming from the "control box", properly processed in the input circuit are put into the logic circuit 23 together with other signals, such as the reset signal, and are processed by the microprocessor 24.
  • a feeding circuit 21 supplies the input circuits block 20, the logic block 24, the leds from 1 to 6, the decoding block 25 and the display 10.
  • the microprocessor 24 processes the input signals and supplies also the display 10 with a clock signal. In this way the clock signal exits from the logic block 23, is properly decoded by the block 25 and is visualized in the display 10.
  • the microprocessor 24 not only provides the output clock signal activating the display 10, but it also counts separately the operation times of the burner during the first and second stage, so that, from this information, it is possible to draw further conclusions.
  • Fig. 2 above the display 10 there is the push button 30 for the visualization of the operation time of the burner during the first stage. Instead, the operation hours of the burner during the second stage are visualized by activating the push button 31.
  • the push button 33 is the reset button that, when pushed simultaneously with the push buttons 30 and 31, resets to zero the counts of the operation hours previously mentioned.
  • the device according to the invention can be easily associated with any control and monitoring panel of any burner, said device being able to work in parallel with the same without interfering in any way with the instrumentation already existing, said device having in fact the specific task of taking from the control and monitoring instrumentation of the burner only electrical signals without causing any modification of the same and of subsequently properly processing them.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
EP94103178A 1993-03-18 1994-03-03 Dispositif de signalisation des conditions d'opération et de défaillance dans un brûleur Withdrawn EP0616172A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI930042 1993-03-18
ITVI930042A IT1270909B (it) 1993-03-18 1993-03-18 Dispositivo di segnalazione dello stato di funzionamento e dei guasti in un bruciatore

Publications (1)

Publication Number Publication Date
EP0616172A1 true EP0616172A1 (fr) 1994-09-21

Family

ID=11425151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103178A Withdrawn EP0616172A1 (fr) 1993-03-18 1994-03-03 Dispositif de signalisation des conditions d'opération et de défaillance dans un brûleur

Country Status (2)

Country Link
EP (1) EP0616172A1 (fr)
IT (1) IT1270909B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0857917A1 (fr) * 1997-02-05 1998-08-12 Crouzet GmbH Procédé et dispositif pour la signalisation optique d'une perturbation d'une installation de chauffe
WO2015001487A1 (fr) * 2013-07-02 2015-01-08 Sit La Precisa S.P.A. Con Socio Unico Procédé et système de commande du fonctionnement d'un brûleur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211331A (en) * 1987-10-16 1989-06-28 Smith Corp A O Water heater diagnostic apparatus
JPH024128A (ja) * 1988-06-22 1990-01-09 Matsushita Electric Ind Co Ltd 器具の故障表示装置
JPH024125A (ja) * 1988-06-22 1990-01-09 Matsushita Electric Ind Co Ltd 燃焼器具の故障記憶装置
DE4140804C1 (de) * 1991-12-11 1993-03-18 Webasto Ag Fahrzeugtechnik Steuereinrichtung für Heizvorrichtungen
EP0566177A1 (fr) * 1992-03-27 1993-10-20 Encon B.V. Dispositif de commande automatique de brûleur pour un appareil à gaz, noamment pour une chaudière de chauffage central

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211331A (en) * 1987-10-16 1989-06-28 Smith Corp A O Water heater diagnostic apparatus
JPH024128A (ja) * 1988-06-22 1990-01-09 Matsushita Electric Ind Co Ltd 器具の故障表示装置
JPH024125A (ja) * 1988-06-22 1990-01-09 Matsushita Electric Ind Co Ltd 燃焼器具の故障記憶装置
DE4140804C1 (de) * 1991-12-11 1993-03-18 Webasto Ag Fahrzeugtechnik Steuereinrichtung für Heizvorrichtungen
EP0566177A1 (fr) * 1992-03-27 1993-10-20 Encon B.V. Dispositif de commande automatique de brûleur pour un appareil à gaz, noamment pour une chaudière de chauffage central

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 135 (M - 949) 14 March 1990 (1990-03-14) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0857917A1 (fr) * 1997-02-05 1998-08-12 Crouzet GmbH Procédé et dispositif pour la signalisation optique d'une perturbation d'une installation de chauffe
WO2015001487A1 (fr) * 2013-07-02 2015-01-08 Sit La Precisa S.P.A. Con Socio Unico Procédé et système de commande du fonctionnement d'un brûleur
US10139106B2 (en) 2013-07-02 2018-11-27 Sit S.P.A. Method and system for controlling the operation of a burner

Also Published As

Publication number Publication date
ITVI930042A1 (it) 1994-09-18
ITVI930042A0 (it) 1993-03-18
IT1270909B (it) 1997-05-13

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