EP1108956A2 - Dispositif pour le controle de la combustion - Google Patents

Dispositif pour le controle de la combustion Download PDF

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Publication number
EP1108956A2
EP1108956A2 EP00123642A EP00123642A EP1108956A2 EP 1108956 A2 EP1108956 A2 EP 1108956A2 EP 00123642 A EP00123642 A EP 00123642A EP 00123642 A EP00123642 A EP 00123642A EP 1108956 A2 EP1108956 A2 EP 1108956A2
Authority
EP
European Patent Office
Prior art keywords
boiler
optical sensor
photodetectors
combustion
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Withdrawn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
EP00123642A
Other languages
German (de)
English (en)
Other versions
EP1108956A3 (fr
Inventor
Mario Zucco
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.)
IMIT SpA
Original Assignee
IMIT 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 IMIT SpA filed Critical IMIT SpA
Publication of EP1108956A2 publication Critical patent/EP1108956A2/fr
Publication of EP1108956A3 publication Critical patent/EP1108956A3/fr
Withdrawn legal-status Critical Current

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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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements 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
    • F23N1/002—Regulating fuel supply 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
    • F23N2223/52—Fuzzy logic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/10—Measuring temperature stack 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
    • 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
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples

Definitions

  • the present invention relates to a device for the control of combustion.
  • the present invention relates to an optical device for the control of the combustion of burners, especially those making part of gas-fed heating boilers.
  • combustion yields are low, because of the repeated on-off steps.
  • control devices have been proposed made up by chemical sensors suitable to detect the content in noxious gases comprised in the fumes determined by combustion.
  • these devices have severe drawbacks, as they require a rather long reaction time and provide information on combustion yield only indirectly.
  • Object of the invention is to provide a solution for the aforementioned drawbacks of the control devices of the known art.
  • object of the invention is to realize a device allowing to adjust in an optimal manner burner combustion, especially for burners applied to gas-fed heating boilers, obtaining complete indications on combustion quality.
  • a further object of the present invention is to realize a device for combustion control suitable to keep constantly monitored in real time the excess values of air and the yielding losses of combustion.
  • a further object of the present invention is to realize a device as defined above, suitable to adjust combustion continuously, depending on the value obtained, interacting with the electronic card of the boiler.
  • a not least object of the present invention is to provide users with a device for combustion control that can ensure a high level of resistance and reliability in the time, and also such as to be easily and economically realized.
  • the present invention allows to achieve these and other objects that will be clear thanks to the following description by continuously monitoring the flame characteristics and correlating the flame optical characteristics with combustion quality in terms of air excess, obtaining in this way instantaneous complete information on combustion state through specific systems of data elaboration.
  • object of this invention is a device for combustion control, especially utilizable for gas-fed boiler burners, comprising at least an optical sensor constituted of one or more photodetectors, oriented in the direction of one or more zones defined by the flame of a boiler, wherein the electric signal provided at the outlet are acquired by a card for a system of data elaboration based on neural networks and fuzzy logic, said system interacting with the electronic card that controls said boiler.
  • the device for the combustion control of the burners of the present invention comprise at least an optical sensor (10) suitable to detect the aspect of flame (12) of a boiler (14) in terms of color, form and size, preferably also of temperature.
  • Said optical sensor (10) interacts with a system of data elaboration (16) based on neural networks and fuzzy logic.
  • Said elaboration system (16) is connected to the conventional card (18) for the control of the boiler.
  • the optical sensor (10) is constituted of one or more photodetectors, preferably large-band photodiodes sensitive to the whole visible light spectrum (400-700 nm), associated to colored filters, red, green or blue, to select the part of spectrum one wishes to detect.
  • photodetectors may be used that are sensitive to well-defined zones of the spectrum, i.e. for instance 400-500 nm for blue, 500-600 nm for green, 600-700 nm for red; in this case the filter is directly applied to photodetectors or photosensors.
  • the latter are semiconductor light radiation detectors, that transform the radiation incident on the sensitive part of the sensor into an outgoing electric signal proportional to the light intensity detected.
  • the optical sensor (10) of the device of the present invention comprises a triplet of photodetectors: R (20) (red), G (22) (green), and B (24) (blue), with separate outlets, so aligned as to be oriented and aimed at well-defined and prefixed zones of flame (12).
  • the photodetector or photodetectors are coupled to form one only sensor, advantageously incorporated in a supporting envelope (28), obtained from any suitable material and located in boiler (14), in the direction of the flame (12).
  • the electric signals obtained at the outlet of the photodetectors, proportional to the light intensity incident on the same, are transferred to a data acquisition card, which data constitute the inlet values for the elaboration system (16).
  • Said elaboration system (16) is based on neural networks and luzzy logic, and can perform all the mathematical operations necessary to obtain the parameter related to air excess and acts directly on the electronic card (18) for the control of boiler (14), to adjust combustion quality. Such adjustment may for instance he due to a variation in the supply of combustion air or the opening of the gas valve.
  • control device of the invention comprises, besides the sensor constituted by the aforementioned photodiodes, one or more temperature sensors (26) of the infrared or thermocouple type; in fact, the combustion yield depends on both the oxygen percentage and the difference between the temperature of outgoing fumes and air temperature.
  • the optical analysis as defined above, together with a measure of these temperature parameters, allows therefore to further evaluate exactly the yield values of the combustion.
  • the temperature sensor or sensors (26) interact with the neural network of the fuzzy logic elaboration system (16), determining its action on the card (18) according to the same procedure as the signal coming from the photodetectors of photodiodes.

Landscapes

  • 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)
EP00123642A 1999-12-13 2000-10-30 Dispositif pour le controle de la combustion Withdrawn EP1108956A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI992580 1999-12-13
IT1999MI002580A IT1314125B1 (it) 1999-12-13 1999-12-13 Dispositivo per il controllo della combustione.

Publications (2)

Publication Number Publication Date
EP1108956A2 true EP1108956A2 (fr) 2001-06-20
EP1108956A3 EP1108956A3 (fr) 2003-11-19

Family

ID=11384099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00123642A Withdrawn EP1108956A3 (fr) 1999-12-13 2000-10-30 Dispositif pour le controle de la combustion

Country Status (2)

Country Link
EP (1) EP1108956A3 (fr)
IT (1) IT1314125B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010151386A1 (fr) 2009-06-24 2010-12-29 Polaris Sensor Technologies, Inc. Appareil de discrimination de flamme par utilisation de filtres laissant passer les grandes longueurs d'onde, et procédé correspondant
US20110008737A1 (en) * 2009-06-15 2011-01-13 General Electric Company Optical sensors for combustion control
US8456634B2 (en) 2009-06-15 2013-06-04 General Electric Company Optical interrogation sensors for combustion control
CN110057820A (zh) * 2019-04-15 2019-07-26 中南大学 在线检测氯化氢合成炉氯氢配比的方法、系统及存储介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035324A1 (de) * 1989-11-10 1991-05-16 Smiths Industries Plc Verfahren und schaltungsanordnung zum erfassen einer flamme
US5249954A (en) * 1992-07-07 1993-10-05 Electric Power Research Institute, Inc. Integrated imaging sensor/neural network controller for combustion systems
EP0576955A2 (fr) * 1992-06-19 1994-01-05 L. & C. Steinmüller GmbH Procédé et dispositif pour régler la combustion des comburants sur une grille d'un foyer
EP0616200A1 (fr) * 1993-03-17 1994-09-21 Hitachi, Ltd. Caméra, système pour analyser un spectre, et appareil pour évaluer la combustion les utilisant
WO1997045677A1 (fr) * 1996-05-29 1997-12-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et appareil de regulation optique de la flamme dans des bruleurs de combustion
US5797736A (en) * 1996-12-03 1998-08-25 University Of Kentucky Research Foundation Radiation modulator system
DE19710206A1 (de) * 1997-03-12 1998-09-17 Siemens Ag Verfahren und Vorrichtung zur Verbrennungsanalyse sowie Flammenüberwachung in einem Verbrennungsraum

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035324A1 (de) * 1989-11-10 1991-05-16 Smiths Industries Plc Verfahren und schaltungsanordnung zum erfassen einer flamme
EP0576955A2 (fr) * 1992-06-19 1994-01-05 L. & C. Steinmüller GmbH Procédé et dispositif pour régler la combustion des comburants sur une grille d'un foyer
US5249954A (en) * 1992-07-07 1993-10-05 Electric Power Research Institute, Inc. Integrated imaging sensor/neural network controller for combustion systems
EP0616200A1 (fr) * 1993-03-17 1994-09-21 Hitachi, Ltd. Caméra, système pour analyser un spectre, et appareil pour évaluer la combustion les utilisant
WO1997045677A1 (fr) * 1996-05-29 1997-12-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et appareil de regulation optique de la flamme dans des bruleurs de combustion
US5797736A (en) * 1996-12-03 1998-08-25 University Of Kentucky Research Foundation Radiation modulator system
DE19710206A1 (de) * 1997-03-12 1998-09-17 Siemens Ag Verfahren und Vorrichtung zur Verbrennungsanalyse sowie Flammenüberwachung in einem Verbrennungsraum

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110008737A1 (en) * 2009-06-15 2011-01-13 General Electric Company Optical sensors for combustion control
US8456634B2 (en) 2009-06-15 2013-06-04 General Electric Company Optical interrogation sensors for combustion control
WO2010151386A1 (fr) 2009-06-24 2010-12-29 Polaris Sensor Technologies, Inc. Appareil de discrimination de flamme par utilisation de filtres laissant passer les grandes longueurs d'onde, et procédé correspondant
EP2446236A4 (fr) * 2009-06-24 2017-11-08 Polaris Sensor Technologies, Inc. Appareil de discrimination de flamme par utilisation de filtres laissant passer les grandes longueurs d'onde, et procédé correspondant
CN110057820A (zh) * 2019-04-15 2019-07-26 中南大学 在线检测氯化氢合成炉氯氢配比的方法、系统及存储介质
CN110057820B (zh) * 2019-04-15 2021-04-30 中南大学 在线检测氯化氢合成炉氯氢配比的方法、系统及存储介质

Also Published As

Publication number Publication date
ITMI992580A0 (it) 1999-12-13
EP1108956A3 (fr) 2003-11-19
IT1314125B1 (it) 2002-12-04
ITMI992580A1 (it) 2001-06-13

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