EP1902254A1 - Methode de controle d'un dispositif de combustion et dispositif de combustion - Google Patents

Methode de controle d'un dispositif de combustion et dispositif de combustion

Info

Publication number
EP1902254A1
EP1902254A1 EP05752994A EP05752994A EP1902254A1 EP 1902254 A1 EP1902254 A1 EP 1902254A1 EP 05752994 A EP05752994 A EP 05752994A EP 05752994 A EP05752994 A EP 05752994A EP 1902254 A1 EP1902254 A1 EP 1902254A1
Authority
EP
European Patent Office
Prior art keywords
firing device
air
value
temperature
burner
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
EP05752994A
Other languages
German (de)
English (en)
Other versions
EP1902254B1 (fr
Inventor
Martin Geiger
Ulrich Geiger
Rudolf Tungl
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.)
Ebm Papst Landshut GmbH
Original Assignee
Ebm Papst Landshut GmbH
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
Priority claimed from DE202004017851U external-priority patent/DE202004017851U1/de
Priority claimed from DE102004030299A external-priority patent/DE102004030299A1/de
Application filed by Ebm Papst Landshut GmbH filed Critical Ebm Papst Landshut GmbH
Priority to EP13152525.5A priority Critical patent/EP2594848B1/fr
Publication of EP1902254A1 publication Critical patent/EP1902254A1/fr
Application granted granted Critical
Publication of EP1902254B1 publication Critical patent/EP1902254B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply 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
    • 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
    • F23N5/022—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium 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
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electronic means
    • 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
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/10—Air or combustion gas valves or dampers power assisted, e.g. using electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/02—Space-heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/16—Systems for controlling combustion using noise-sensitive detectors

Definitions

  • a mixing ratio can be determined in which the combustion efficiency is maximized, i. where the fuel burns as completely and clean as possible.
  • the regulation of the mixing ratio is done today by default, especially for gas burners used in the household, by pneumatic control of a gas valve in dependence on the volume flow of the supplied air quantity (principle of pneumatic composite).
  • pneumatic control pressures or pressure differences at orifices, in constrictions or in Venturi nozzles are used as control variables for a pneumatic gas control valve, by means of which the gas supply to the air flow is set.
  • a disadvantage of the pneumatic control is that mechanical components must be used which are subject to hysteresis effects due to the friction.
  • the invention is based on the finding that a characteristic curve for regulating the value dependent on a temperature generated by the firing device does not depend on a type of gas used.
  • the inventive method of control is thus gasartunpli.
  • the temperature generated by the firing device is generally measured by a sensor arranged in the flame core or at the burner itself, for example at the burner surface. However, it can also be measured at the base of the flame, at the tip of the flame, or at some distance within the working range of the flame.
  • the measured temperatures depending on where the temperature sensor is mounted, and depending on the load and the air-fuel ratio, for example, values between 100 0 C and 1000 0 C.
  • the first parameter corresponds in particular to one of the firing devices per unit of time to be supplied air quantity.
  • a constant second parameter means that with the change in the amount of air, the amount of fuel supplied is changed accordingly to maintain the optimal stoichiometric ratio between air and fuel gas for combustion.
  • the first parameter preferably corresponds to a mass flow or volume flow of the air to be supplied to the firing device.
  • the mass flow of the air can be determined, for example, by a mass flow sensor in the feed channel for the air supplied to the burner.
  • the constant second parameter " changes likewise in the mass flow or volumetric flow of the fuel, which can likewise be measured by a mass flow sensor arranged at a suitable point.
  • the value corresponds to a temperature difference between a temperature generated in the region of the burner flame and a reference temperature, the reference temperature in particular corresponding to the temperature of the air or of the mixture of air and combustion medium before it enters the region of the burner flame.
  • the device for measuring a temperature value preferably comprises a part which is arranged at least partially in the region of the reaction zone of the burner flame.
  • part of the device for measuring the temperature value outside the reaction zone of the flame in particular in the region of an entry zone for the air supplied to the firing device and / or for the air / mixture mixture supplied to the firing device, can be used ⁇ be orders.
  • the device for measuring a temperature value preferably comprises a thermoelement.
  • a contact point of the different limbs of the thermocouple element is arranged in the region of the reaction zone of the burner flame, the reference point outside this reaction zone in order to detect a temperature difference between the flame and a region thermally decoupled therefrom, for example an environmental region of the gas burner ,
  • the value measured by the device for measuring a temperature value is preferably a thermoelectric voltage.
  • the firing device comprises a valve which can be actuated to increase or reduce the amount of gas supplied per unit of time.
  • the fuel supply to the firing device is adjusted by changing the opening of a gas valve from a first to a second opening value and by presetting a set value that depends on the first parameter, the second opening value being between an upper and lower limit value, and wherein the transition of the opening of the gas valve from the first to the second opening value, no control of the fuel supply performed and only after reaching the target value of the first parameter corresponding to the burner load, a control of operating parameters of the firing device is performed.
  • control elements for example the fan or a gas control valve
  • the control elements can be readjusted after a certain period of time, which depends on the inertia of the sensors. It thus takes place in the execution of the method according to the invention, a transition from a pure control to a control.
  • the characteristic curve which results from the setpoint values for the opening of the gas valve as a function of the parameter which corresponds to the burner load can be recalibrated on the basis of the operating parameters of the firing device set by the control. If, after regulation, the value of the opening of the gas valve falls outside the range bounded by the upper and lower limit values, a recalibration of the characteristic curve can be carried out. For example, during this recalibration, the setpoints may be shifted so that the new setpoint line passes through the adjusted value for the opening of the gas valve. In the same way, the upper and lower limit values can be shifted, so that the new setpoint curve is surrounded by a tolerance corridor, as in the previously valid characteristic curve.
  • a further firing device in particular a gas burner, comprises: a gas valve for adjusting the fuel supply to the firing device; a memory for storing set values that depend on a parameter corresponding to the burner load and upper and lower limits; a device for controlling the opening of the gas valve, which adjusts the opening of the gas valve from a first to a second opening value un ⁇ ter specification of a stored desired value in a change of the parameter corresponding to the burner load, from a starting value to a Ziel ⁇ the second opening value lies between a stored upper and a lower limit value, and wherein no control of the fuel supply is carried out during the transition of the opening of the gas valve from the first to the second opening value; and means for controlling which, after reaching the target value of the parameter which corresponds to the burner load, regulate operating parameters of the firing device.
  • the control after the control step for example, as in a method according to the. Proverbs 1 to 24 take place.
  • the gas valve may comprise an actuator, in particular a stepper motor, a pulse width modulated or an electrical size controlled coil.
  • the firing device preferably has at least one mass flow sensor and / or volume flow sensor for measuring the amount of air supplied to the firing device per unit time and / or the amount of fuel medium fed per unit time and / or the amount of mixture of air and fuel medium supplied.
  • the firing device can have a device in the region of the burner flame for measuring a temperature generated by the firing device.
  • the temperature sensor may be arranged, for example, in the region of the flame, but also on the burner in the vicinity of the flame.
  • a thermocouple can be used as a temperature sensor.
  • FIG. 1 shows a firing device according to the present invention
  • FIG. 2 shows a characteristic curve which is used in carrying out the first method
  • the gas burner has an air supply section 1, is sucked through the combustion air L.
  • a mass flow sensor 2 measures the mass flow of the air L drawn in by a fan 9.
  • the mass flow sensor 2 is arranged in such a way that a flow which is as laminar as possible is generated in its surroundings in order to avoid measurement errors.
  • the mass flow sensor could be arranged in a bypass (not shown) and using a laminar element.
  • control device has a memory for storing characteristic curves or nominal values as well as a corresponding data processing unit which is set up to carry out the corresponding methods.
  • a change starting from an operating state 1 to an operating state 2 is assumed.
  • the change in the operating state requires a load change, for example a changed heat requirement.
  • the operating state 1 corresponds to an air mass flow m L i
  • the operating state 2 an air mass flow m L2 .
  • the burner load is at a constant air ratio ⁇ substantially proportional to the mass flow of both the air and the fuel.
  • the corresponding opening of the gas valve is adjusted by means of the desired characteristic Gasventilöff ⁇ tion via mass flow
  • thermocouple 12 instead of absolute actual and desired temperatures and temperature differences DT is t, DT S0
  • the target temperature T n instead of the target temperature T n as in accordance with a thermal voltage U n as a function of the air mass flow m L are applied.
  • the reference temperature of the thermocouple 12 may, for example, in the air supply section 1, in a burner area outside the range of action of the burner flame 13 in the Umgege- Be measured by the burner.
  • the adjusting opening of the gas valve is in any case between an upper limit curve K1 and a lower limit curve K2, which indicate a tolerance range for the opening of the gas valve.
  • the upper limit curve K1 corresponds to a maximum permissible opening of the gas valve
  • the lower limit curve K2 to a minimum permissible opening of the gas valve 6.

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)

Abstract

L'invention concerne un procédé pour réguler un dispositif de combustion avec prise en compte de la température et/ou de la charge du brûleur, en particulier dans un brûleur à gaz. Ce procédé consiste à réguler la température (T<SUB>ist</SUB>) générée par le dispositif de combustion, au moyen d'une courbe caractéristique qui représente une plage de valeurs correspondant à une température théorique (T<SUB>soll</SUB>), en fonction d'un premier paramètre (m<SB>L</SB>, V<SB>L</SB>) qui correspond à la charge (Q) du brûleur. Selon l'invention, lors de la représentation de la courbe caractéristique, un deuxième paramètre, de préférence le coefficient de surplus d'air (?), qui est défini comme étant le rapport entre la quantité d'air réellement fournie et la quantité d'air théoriquement nécessaire à une combustion stoechiométrique optimale, est constant.
EP05752994.3A 2004-06-23 2005-06-20 Methode de controle d'un dispositif de combustion et dispositif de combustion Not-in-force EP1902254B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13152525.5A EP2594848B1 (fr) 2004-06-23 2005-06-20 Procédé de commande d'un appareil à combustion et appareil à combustion

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202004017851U DE202004017851U1 (de) 2004-06-23 2004-06-23 Feuerungseinrichtung
DE102004030299A DE102004030299A1 (de) 2004-06-23 2004-06-23 Verfahren zur Regelung und Steuerung einer Feuerungseinrichtung und Feuerungseinrichtung
DE102004055716A DE102004055716C5 (de) 2004-06-23 2004-11-18 Verfahren zur Regelung einer Feuerungseinrichtung und Feuerungseinrichtung (Elektronischer Verbund I)
PCT/EP2005/006627 WO2006000366A1 (fr) 2004-06-23 2005-06-20 Procede pour reguler et commander un dispositif de combustion, et dispositif de combustion

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP13152525.5A Division EP2594848B1 (fr) 2004-06-23 2005-06-20 Procédé de commande d'un appareil à combustion et appareil à combustion
EP13152525.5A Division-Into EP2594848B1 (fr) 2004-06-23 2005-06-20 Procédé de commande d'un appareil à combustion et appareil à combustion

Publications (2)

Publication Number Publication Date
EP1902254A1 true EP1902254A1 (fr) 2008-03-26
EP1902254B1 EP1902254B1 (fr) 2016-03-30

Family

ID=34970763

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05752994.3A Not-in-force EP1902254B1 (fr) 2004-06-23 2005-06-20 Methode de controle d'un dispositif de combustion et dispositif de combustion
EP13152525.5A Not-in-force EP2594848B1 (fr) 2004-06-23 2005-06-20 Procédé de commande d'un appareil à combustion et appareil à combustion

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13152525.5A Not-in-force EP2594848B1 (fr) 2004-06-23 2005-06-20 Procédé de commande d'un appareil à combustion et appareil à combustion

Country Status (6)

Country Link
US (2) US8500441B2 (fr)
EP (2) EP1902254B1 (fr)
KR (2) KR20110129884A (fr)
CA (2) CA2773654A1 (fr)
DE (1) DE102004055716C5 (fr)
WO (1) WO2006000366A1 (fr)

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CA2571520C (fr) 2013-11-19
US20110033808A1 (en) 2011-02-10
US8500441B2 (en) 2013-08-06
CA2571520A1 (fr) 2006-01-05
DE102004055716B4 (de) 2007-09-13
WO2006000366A1 (fr) 2006-01-05
US8636501B2 (en) 2014-01-28
EP2594848A1 (fr) 2013-05-22
US20080318172A1 (en) 2008-12-25
KR20070043712A (ko) 2007-04-25
EP2594848B1 (fr) 2015-09-23
DE102004055716C5 (de) 2010-02-11
EP1902254B1 (fr) 2016-03-30
DE102004055716A1 (de) 2006-01-12
KR20110129884A (ko) 2011-12-02

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