EP0909922A1 - Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz - Google Patents

Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz Download PDF

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Publication number
EP0909922A1
EP0909922A1 EP97830520A EP97830520A EP0909922A1 EP 0909922 A1 EP0909922 A1 EP 0909922A1 EP 97830520 A EP97830520 A EP 97830520A EP 97830520 A EP97830520 A EP 97830520A EP 0909922 A1 EP0909922 A1 EP 0909922A1
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EP
European Patent Office
Prior art keywords
gas
control system
microcontroller
modulating valve
controlling means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97830520A
Other languages
German (de)
English (en)
Other versions
EP0909922B1 (fr
Inventor
Marco Tagliaferri
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.)
Riello SpA
Original Assignee
Iaber 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8230812&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0909922(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Iaber SpA filed Critical Iaber SpA
Priority to DE69709928T priority Critical patent/DE69709928T2/de
Priority to EP97830520A priority patent/EP0909922B1/fr
Priority to ES97830520T priority patent/ES2170360T3/es
Priority to AT97830520T priority patent/ATE211809T1/de
Publication of EP0909922A1 publication Critical patent/EP0909922A1/fr
Application granted granted Critical
Publication of EP0909922B1 publication Critical patent/EP0909922B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • 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
    • F23N2223/36—PID signal processing
    • 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
    • F23N2225/18—Measuring temperature feedwater 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
    • F23N2225/19—Measuring temperature outlet temperature water heat-exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/02—Ventilators in stacks
    • F23N2233/04—Ventilators in stacks with variable speed
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/06—Space-heating and heating water

Definitions

  • the present invention relates to automatic control systems for controlling the gas and/or air flow rates in gas fired boilers using an ionisation electrode as a sensing element for determining the combustion condition of the burner.
  • the most common method of monitoring the combustion process is to utilize an ionisation electrode arranged in the flame area of the burner. It is known that the current flowing through this electrode, i.e. the ionisation current, depends upon the combustion conditions. Thus, information on the actual combustion condition is obtained by directly measuring the ionisation current or by measuring the voltage across the electrode which is a function of said ionisation current.
  • the control system measures the ionisation current and derives therefrom a signal to be used as a control variable for controlling the flow rate of at least one of the combustion components, namely air and gas, supplied to the gas fired boiler.
  • the combined gas-air control system for gas fired boilers comprises:
  • the function of the combined gas-air control system of the invention is to control the gas and air flow rates in the gas fired boiler B in order to hold either the heating water temperature or the sanitary water temperature to a desired value which will be referred to in the following as set point temperature.
  • Another function of the combined gas-air control system of the invention is to improve combustion and reduce emission of harmful combustion products in gas fired boilers.
  • the gas flow rate Q g and the air flow rate Q a are controlled so as to change combustion process conditions in the gas fired boiler B and to bring the heating or sanitary water temperature back to the set point predetermined by the user.
  • Q g and Q a will be referred to in the following as manipulated variables.
  • the set point temperatures of the heating and sanitary water are set typically by means of potentiometers R h and R s , respectively and the corresponding set point input signals T hr and T sr are supplied to the microcontroller ⁇ C.
  • Feedback informations relating to the heating water and sanitary water temperatures, the air pressure in the combustion chamber 1 and the combustion process conditions in the burner 2 are sensed by appropriate sensors and transmitted to the microcontroller ⁇ C.
  • the control element 22 in response to the error signal E(T) sequentially performs a proportional+integral+derivative (PID) control mode and a proportional (P) control mode.
  • PID proportional+integral+derivative
  • the output signal P ac from the control element 22 is also applied to processing elements 24 and 25 which calculate the theoretical values of the voltage across the ionisation electrode and of the modulating valve current dependent on the corrected air pressure value.
  • each processing element 24 and 25 embodies a memory in which the optimal relationships between the voltage across the ionisation electrode and the modulating valve current, respectively and the air pressure in the combustion chamber are stored.
  • the output signals from the processing elements 24 and 25 are indicated with V ion(th) and I mod(th) , respectively.
  • Operation of the burner is also monitored by a thermostat 27 arranged in the burner area and connected to the ⁇ C.
  • the thermostat 27 signals the malfunctioning to the ⁇ C which then shuts down the burner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
EP97830520A 1997-10-17 1997-10-17 Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz Expired - Lifetime EP0909922B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69709928T DE69709928T2 (de) 1997-10-17 1997-10-17 Kombiniertes Regelsystem für Gas und Luft zur Verbrennungsregelung eines Gasheizkessels
EP97830520A EP0909922B1 (fr) 1997-10-17 1997-10-17 Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz
ES97830520T ES2170360T3 (es) 1997-10-17 1997-10-17 Sistema de regulacion combinada de gas y de aire para regular la combustion en calderas caldeadas por gas.
AT97830520T ATE211809T1 (de) 1997-10-17 1997-10-17 Kombiniertes regelsystem für gas und luft zur verbrennungsregelung eines gasheizkessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97830520A EP0909922B1 (fr) 1997-10-17 1997-10-17 Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz

Publications (2)

Publication Number Publication Date
EP0909922A1 true EP0909922A1 (fr) 1999-04-21
EP0909922B1 EP0909922B1 (fr) 2002-01-09

Family

ID=8230812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830520A Expired - Lifetime EP0909922B1 (fr) 1997-10-17 1997-10-17 Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz

Country Status (4)

Country Link
EP (1) EP0909922B1 (fr)
AT (1) ATE211809T1 (fr)
DE (1) DE69709928T2 (fr)
ES (1) ES2170360T3 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026446A1 (fr) * 1999-02-03 2000-08-09 IABER S.p.A. Dispositif de commande de air-gaz
EP1130320A1 (fr) * 2000-03-03 2001-09-05 IABER S.p.A. Système de commande pour chaudières
EP1130319A1 (fr) * 2000-03-03 2001-09-05 IABER S.p.A. Tuyau de venturi
EP1154202A2 (fr) 2000-05-12 2001-11-14 Siemens Building Technologies AG Dispositif de commmande pour un brûleur
NL1015797C2 (nl) 2000-07-25 2002-01-28 Nefit Buderus B V Verbrandingsinrichting en werkwijze voor het besturen van een verbrandingsinrichting.
EP1351019A2 (fr) 2002-04-02 2003-10-08 Siemens Building Technologies AG Procédé pour le contrôle du fonctionnement d'un système de régulation de brûleur pour appareil de chauffage
WO2004015333A2 (fr) * 2002-08-05 2004-02-19 Merloni Termosanitari S.P.A. Systeme de regulation de combustion a capteur $g(l) virtuel
EP1434017A1 (fr) * 2002-12-23 2004-06-30 MERLONI TERMOSANITARI S.p.A. Chaudiére murale à air soufflé
EP1434016A1 (fr) * 2002-12-23 2004-06-30 MERLONI TERMOSANITARI S.p.A. Interrupteur à pression pour chaudière étanche à air soufflé
EP1712841A1 (fr) * 2005-04-14 2006-10-18 Immergas S.p.A. Dispositif électronique et procédé pour contrôler l'évacuation des gaz brûlés, en particulier dans une chaudière
CN1332152C (zh) * 2003-04-11 2007-08-15 株式会社庆东纳碧安 使用空气压力传感器的空气比例式锅炉
EP1846696A1 (fr) * 2005-01-28 2007-10-24 Kyungdong Network Co., Ltd. Systeme et procede de controle de rapport de combustion approprie de bruleur a mazout mettant en oeuvre un capteur de pression
WO2008017177A1 (fr) * 2006-08-10 2008-02-14 Toby Ag Procédé de réglage d'un brûleur
CN112161292A (zh) * 2020-09-14 2021-01-01 华帝股份有限公司 一种燃烧系统燃烧状态控制方法及应用其的热水器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102640978B (zh) * 2012-05-11 2017-10-17 云南省烟草农业科学研究院 双压引风加热装置
CN102777886B (zh) * 2012-08-13 2014-07-16 中国中元国际工程公司 燃气锅炉烟气余热回收装置和方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01277113A (ja) * 1988-04-27 1989-11-07 Rinnai Corp 強制送風式燃焼装置
JPH02161208A (ja) * 1988-12-14 1990-06-21 Harman Co Ltd 燃焼装置
EP0429034A2 (fr) * 1989-11-24 1991-05-29 Joh. Vaillant GmbH u. Co. Procédé de commande d'une chaudière
JPH0771748A (ja) * 1993-09-02 1995-03-17 Gastar Corp 燃焼装置及び燃焼制御方法
DE19618573C1 (de) * 1996-05-09 1997-06-26 Stiebel Eltron Gmbh & Co Kg Verfahren und Einrichtung zum Betrieb eines Gasbrenners
DE19601517A1 (de) * 1996-01-17 1997-07-24 Stiebel Eltron Gmbh & Co Kg Regelung eines Gasheizgeräts

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01277113A (ja) * 1988-04-27 1989-11-07 Rinnai Corp 強制送風式燃焼装置
JPH02161208A (ja) * 1988-12-14 1990-06-21 Harman Co Ltd 燃焼装置
EP0429034A2 (fr) * 1989-11-24 1991-05-29 Joh. Vaillant GmbH u. Co. Procédé de commande d'une chaudière
JPH0771748A (ja) * 1993-09-02 1995-03-17 Gastar Corp 燃焼装置及び燃焼制御方法
DE19601517A1 (de) * 1996-01-17 1997-07-24 Stiebel Eltron Gmbh & Co Kg Regelung eines Gasheizgeräts
DE19618573C1 (de) * 1996-05-09 1997-06-26 Stiebel Eltron Gmbh & Co Kg Verfahren und Einrichtung zum Betrieb eines Gasbrenners

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 049 (M - 0927) 29 January 1990 (1990-01-29) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 416 (M - 1021) 7 September 1990 (1990-09-07) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 006 31 July 1995 (1995-07-31) *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026446A1 (fr) * 1999-02-03 2000-08-09 IABER S.p.A. Dispositif de commande de air-gaz
EP1130320A1 (fr) * 2000-03-03 2001-09-05 IABER S.p.A. Système de commande pour chaudières
EP1130319A1 (fr) * 2000-03-03 2001-09-05 IABER S.p.A. Tuyau de venturi
EP1154202A2 (fr) 2000-05-12 2001-11-14 Siemens Building Technologies AG Dispositif de commmande pour un brûleur
US6537059B2 (en) 2000-05-12 2003-03-25 Siemens Building Technologies Ag Regulating device for a burner
EP1154202A3 (fr) * 2000-05-12 2003-05-14 Siemens Building Technologies AG Dispositif de commmande pour un brûleur
NL1015797C2 (nl) 2000-07-25 2002-01-28 Nefit Buderus B V Verbrandingsinrichting en werkwijze voor het besturen van een verbrandingsinrichting.
EP1351019A2 (fr) 2002-04-02 2003-10-08 Siemens Building Technologies AG Procédé pour le contrôle du fonctionnement d'un système de régulation de brûleur pour appareil de chauffage
WO2004015333A2 (fr) * 2002-08-05 2004-02-19 Merloni Termosanitari S.P.A. Systeme de regulation de combustion a capteur $g(l) virtuel
WO2004015333A3 (fr) * 2002-08-05 2004-06-03 Merloni Termosanitari Spa Systeme de regulation de combustion a capteur $g(l) virtuel
EP1434017A1 (fr) * 2002-12-23 2004-06-30 MERLONI TERMOSANITARI S.p.A. Chaudiére murale à air soufflé
EP1434016A1 (fr) * 2002-12-23 2004-06-30 MERLONI TERMOSANITARI S.p.A. Interrupteur à pression pour chaudière étanche à air soufflé
CN1332152C (zh) * 2003-04-11 2007-08-15 株式会社庆东纳碧安 使用空气压力传感器的空气比例式锅炉
EP1846696A1 (fr) * 2005-01-28 2007-10-24 Kyungdong Network Co., Ltd. Systeme et procede de controle de rapport de combustion approprie de bruleur a mazout mettant en oeuvre un capteur de pression
EP1846696A4 (fr) * 2005-01-28 2012-01-04 Kyungdong Network Co Ltd Systeme et procede de controle de rapport de combustion approprie de bruleur a mazout mettant en oeuvre un capteur de pression
EP1712841A1 (fr) * 2005-04-14 2006-10-18 Immergas S.p.A. Dispositif électronique et procédé pour contrôler l'évacuation des gaz brûlés, en particulier dans une chaudière
WO2008017177A1 (fr) * 2006-08-10 2008-02-14 Toby Ag Procédé de réglage d'un brûleur
CN112161292A (zh) * 2020-09-14 2021-01-01 华帝股份有限公司 一种燃烧系统燃烧状态控制方法及应用其的热水器

Also Published As

Publication number Publication date
ATE211809T1 (de) 2002-01-15
ES2170360T3 (es) 2002-08-01
DE69709928T2 (de) 2002-08-29
EP0909922B1 (fr) 2002-01-09
DE69709928D1 (de) 2002-02-28

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