EP3680553B1 - Procédé de régulation du rapport d'air de combustion sur le brûleur d'un appareil de chauffage - Google Patents
Procédé de régulation du rapport d'air de combustion sur le brûleur d'un appareil de chauffage Download PDFInfo
- Publication number
- EP3680553B1 EP3680553B1 EP19215519.0A EP19215519A EP3680553B1 EP 3680553 B1 EP3680553 B1 EP 3680553B1 EP 19215519 A EP19215519 A EP 19215519A EP 3680553 B1 EP3680553 B1 EP 3680553B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow rate
- mass flow
- rate parameter
- air mass
- ionisation
- 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.)
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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
- F23N5/02—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
- 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
- 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
Definitions
- the invention relates to a method for regulating the combustion air ratio at the burner of a heating device.
- a generic method is from the patent EP1002997B1 known.
- an ionization signal is measured in the flame area with the aid of an ionization electrode.
- the fan speed is also recorded.
- a signal representative of the current air ratio is then derived from the ionization signal and the fan speed and this is compared with a predetermined value.
- a control signal for the gas control valve is determined as a function of this comparison.
- the gas-air ratio of the Gas burner checked.
- a signal representative of the current air ratio and the current power is derived from the ionization signal and this is compared with a predetermined value. Information about the operating status of the gas burner can be derived from this comparison.
- this object is achieved by a method according to the features of claim 1.
- FIG. 1 shows an apparatus for carrying out the method according to the invention.
- the components of a heater (not shown here) that are essential for the combustion process are shown.
- Air is supplied to a blower 2 via an air supply 5.
- a fuel gas is supplied to the air via a gas supply 6 and a gas valve 1 and mixed and conveyed by the fan 2.
- the air-gas mixture is then fed to the burner 7 and burned on its surface.
- a primary heat exchanger (not shown) surrounding the burner 7 enables the transfer of the heat generated by the combustion resulting heat on a heat transfer medium, which can then feed the heat to a heat sink.
- An ionization electrode 3 provided in the area of the flames enables a current flow through the flames between the burner 7 and the ionization current 3 caused by a voltage source (not shown) which applies a voltage between the burner 7 and the ionization electrode 3.
- An ionization sensor measures the current flowing through the ionization electrode 3 and supplies an ionization signal which represents the current.
- a control unit 4 detects the ionization signal and controls the drive of the fan 2. To simplify the illustration, the control device 4 is connected directly to the ionization electrode 3. The voltage source, the circuit and the ionization sensor are not shown. The ionization sensor can be part of the voltage source. The ionization signal is an indicator of the combustion quality.
- the degree of opening of the gas valve 1 is determined via a connection to the control device 4. This can be done, for example, by a stepping motor that is controlled by the controller 4.
- the fan 2 moves to a target speed and the degree of opening of the gas valve 1 with the aid of a stored control characteristic to an opening that matches this speed.
- the speed of the fan 2 is now reduced with the opening wheel of the gas valve kept constant until the ionization signal reaches the maximum and falls again.
- An air mass flow parameter preferably the fan speed, which occurs when the maximum ionization flow is reached, is stored, as is the one for this Speed, the required electrical fan power and the target speed for the operating point of the system is calculated using a designed factor. This speed is then approached by the fan 2.
- the degree of opening of the gas valve 1 remains unchanged.
- the blower output which is set at the point of the maximum ionization signal, is used via further designed factors in order to calculate a minimum and a maximum value of the blower output at the operating point of the system.
- a correction factor that is not equal to 1 is calculated.
- the next calibration of the system takes place by adjusting the amount of gas over the degree of opening of the gas valve 1 using the correction factor, and the fan is shut down to this current amount of gas, again keeping the degree of opening constant, until the ionization signal of the electrode 3 a maximum is reached, the speed and blower power are saved and the target speed for the new operating point is approached via the designed factor.
- the predetermined period of time can range from several minutes to several hours or days. However, it can also be linked to the number of ignition processes and can be between one and up to 20 ignition processes.
- the comfort safety mode takes over the safe operation and also ensures a basic supply for heating and hot water operation. Until the fault has been rectified on the main system, the user receives limited hot water comfort.
- the system uses the physical effect that the measured ionization current reaches a maximum at an air ratio of approx. 1.
- this physical information is not used to regulate the combustion quality, but rather to control the system starting at this point (air ratio approx. 1) in a range in which the heat load is kept constant and the device with an acceptable level of efficiency continues to run if the main system has failed.
- Exceeding or falling below the limits of the blower output for the respective operating point indicate unsafe operation. If one of these limits is exceeded because the fan output increases or decreases too much, a new calibration is initiated. If the fan power limits are violated again at the set operating point, the device goes into a locking state.
- the combustion quality is not regulated via the ionization flow, in which the gas valve position or fan speed is tracked to the signal, but the system runs in control mode.
- the ionization signal measured at the operating point serves only in the event of a violation of minimum or maximum absolute values as an indicator of an error, in order to bring the device into a locking state in this case.
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)
Claims (5)
- Procédé de commande du rapport d'air de combustion sur un brûleur (7) pour un appareil de chauffage destiné à générer de la chaleur, avec un capteur d'ionisation, lequel fournit un signal d'ionisation représentant le courant circulant entre le brûleur (7) et une électrode d'ionisation (3) prévue au niveau des flammes du brûleur (7) sur la base d'une tension appliquée, avec un ventilateur pour le transport du mélange air/gaz combustible, avec une vanne de gaz (1) pour l'alimentation de gaz combustible et avec une commande (4) pour l'exécution du procédé, avec les étapes de procédé cycliques consistant àa) déterminer le besoin en chaleur actuel à couvrir par l'appareil de chauffage,b) déterminer et délivrer une caractéristique de débit massique d'air associée au besoin en chaleur déterminé,c) déterminer un signal d'ionisation de consigne associé à la caractéristique de débit massique d'air déterminée et au rapport d'air de combustion de consigne souhaité à l'aide de paramètres conçus et enregistrés précédemment,d) commander de manière continue ou quasi continue la vanne de gaz (1) de sorte que le signal d'ionisation réel corresponde au signal d'ionisation de consigne, ainsi qu'avec les étapes de procédé réalisées à intervalles de temps périodiquese) répéter les étapes a) à d) pendant une durée fixe et, après l'écoulement de la durée, réduire le rapport d'air de combustion tout en détectant le signal d'ionisation jusqu'à ce que le signal d'ionisation atteigne un maximum,f) déterminer, contrôler la plausibilité et corriger les paramètres enregistrés et poursuivre le procédé avec l'étape a) au redémarrage simultané de la durée, dans lequel, dans le cas où des paramètres non plausibles ont été déterminés à l'étape f), au lieu des étapes de procédé a) à f), les étapes de procédé suivantes consistant àg) faire fonctionner le ventilateur (2) dans une caractéristique de débit massique d'air de consigne définie précédemment et commander la vanne de gaz (1) avec une position de vanne définie précédemment qui, conjointement avec la caractéristique de débit massique d'air de consigne, aboutit à un rapport d'air de combustion de consigne défini supérieur à 1 dans des conditions cadres définies précédemmenth) réduire la caractéristique de débit massique d'air avec une mesure simultanée du signal d'ionisation jusqu'à ce qu'un maximum du signal d'ionisation soit détecté,i) déterminer et enregistrer la caractéristique de débit massique d'air à laquelle le maximum du signal d'ionisation a été détecté,k) multiplier la caractéristique de débit massique d'air par un facteur conçu précédemment de sorte qu'un rapport d'air de combustion souhaité soit obtenul) régler la caractéristique de débit massique d'air calculée à l'étape k).
- Procédé selon la revendication 1, caractérisé en ce que la caractéristique de débit massique d'air est la vitesse de ventilateur du ventilateur.
- Procédé selon la revendication 1, caractérisé en ce que la caractéristique de débit massique d'air est la puissance électrique du ventilateur.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la tension appliquée entre le brûleur (7) et l'électrode d'ionisation (3) est une tension alternative.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que dans les étapes h) à l), le rapport d'air est modifié au lieu de réduire ou d'augmenter la caractéristique de débit massique d'air en augmentant ou en réduisant l'alimentation en gaz par la commande de la vanne de gaz (1), dans lequel la position de vanne de la vanne de gaz (1) est utilisée au lieu de la caractéristique de débit massique d'air.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL19215519T PL3680553T3 (pl) | 2019-01-10 | 2019-12-12 | Sposób regulowania stosunku powietrza do spalania w palniku urządzenia grzewczego |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019100467.5A DE102019100467A1 (de) | 2019-01-10 | 2019-01-10 | Verfahren zum Regeln des Verbrennungsluftverhältnisses am Brenner eines Heizgerätes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3680553A1 EP3680553A1 (fr) | 2020-07-15 |
EP3680553B1 true EP3680553B1 (fr) | 2021-08-25 |
Family
ID=68887255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19215519.0A Active EP3680553B1 (fr) | 2019-01-10 | 2019-12-12 | Procédé de régulation du rapport d'air de combustion sur le brûleur d'un appareil de chauffage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3680553B1 (fr) |
DE (1) | DE102019100467A1 (fr) |
ES (1) | ES2898383T3 (fr) |
PL (1) | PL3680553T3 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4411224A1 (fr) * | 2023-01-24 | 2024-08-07 | Vaillant GmbH | Procédé de fonctionnement d'un appareil de chauffage, programme informatique, appareil de régulation et de commande et appareil de chauffage |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113374912A (zh) * | 2021-06-09 | 2021-09-10 | 广州市东霸节能科技有限公司 | 一种商业炉具鼓风和燃气比例调节方法及其装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE189301T1 (de) * | 1995-10-25 | 2000-02-15 | Stiebel Eltron Gmbh & Co Kg | Verfahren und schaltung zur regelung eines gasbrenners |
DE19539568C1 (de) | 1995-10-25 | 1997-06-19 | Stiebel Eltron Gmbh & Co Kg | Verfahren und Schaltung zur Regelung eines Gasbrenners |
DE19853567A1 (de) | 1998-11-20 | 2000-05-25 | Kromschroeder Ag G | Verfahren zur Luftzahlregelung eines vollvormischenden Gasbrenners |
DE10003819C1 (de) * | 2000-01-28 | 2001-05-17 | Honeywell Bv | Verfahren zum Betreiben eines Gasbrenners |
ATE310925T1 (de) * | 2001-09-13 | 2005-12-15 | Siemens Schweiz Ag | Regeleinrichtung für einen brenner und einstellverfahren |
DE102010055567B4 (de) * | 2010-12-21 | 2012-08-02 | Robert Bosch Gmbh | Verfahren zur Stabilisierung eines Betriebsverhaltens eines Gasgebläsebrenners |
DE102015116458A1 (de) * | 2015-09-29 | 2017-03-30 | Viessmann Werke Gmbh & Co Kg | Verfahren zur Unterscheidung zweier für einen Verbrennungsprozess vorgesehener Brenngase mit unterschiedlich hohen Energiegehalten |
DE102017204012A1 (de) * | 2016-09-02 | 2018-03-08 | Robert Bosch Gmbh | Verfahren zur Kontrolle eines Brennstoff-Luft-Verhältnisses in einem Heizsystem sowie eine Steuereinheit und ein Heizsystem |
-
2019
- 2019-01-10 DE DE102019100467.5A patent/DE102019100467A1/de not_active Withdrawn
- 2019-12-12 EP EP19215519.0A patent/EP3680553B1/fr active Active
- 2019-12-12 PL PL19215519T patent/PL3680553T3/pl unknown
- 2019-12-12 ES ES19215519T patent/ES2898383T3/es active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4411224A1 (fr) * | 2023-01-24 | 2024-08-07 | Vaillant GmbH | Procédé de fonctionnement d'un appareil de chauffage, programme informatique, appareil de régulation et de commande et appareil de chauffage |
Also Published As
Publication number | Publication date |
---|---|
PL3680553T3 (pl) | 2022-01-17 |
DE102019100467A1 (de) | 2020-07-16 |
EP3680553A1 (fr) | 2020-07-15 |
ES2898383T3 (es) | 2022-03-07 |
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