EP1333227B1 - Procédé d'ajustement d'un appareil de chauffage incorporant un brûleur à son système d'échappement et/ou de tirage en air - Google Patents

Procédé d'ajustement d'un appareil de chauffage incorporant un brûleur à son système d'échappement et/ou de tirage en air Download PDF

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Publication number
EP1333227B1
EP1333227B1 EP02026220A EP02026220A EP1333227B1 EP 1333227 B1 EP1333227 B1 EP 1333227B1 EP 02026220 A EP02026220 A EP 02026220A EP 02026220 A EP02026220 A EP 02026220A EP 1333227 B1 EP1333227 B1 EP 1333227B1
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EP
European Patent Office
Prior art keywords
air
blower
speed
gas
control device
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.)
Expired - Lifetime
Application number
EP02026220A
Other languages
German (de)
English (en)
Other versions
EP1333227A2 (fr
EP1333227A3 (fr
Inventor
Heinz-Juergen Deibler
Berni Reisser
Marc Rosenland
Frank Hermann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1333227A2 publication Critical patent/EP1333227A2/fr
Publication of EP1333227A3 publication Critical patent/EP1333227A3/fr
Application granted granted Critical
Publication of EP1333227B1 publication Critical patent/EP1333227B1/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
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/002—Regulating air supply or draught using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/08—Regulating air supply or draught by power-assisted systems
    • F23N3/082—Regulating air supply or draught by power-assisted systems 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
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F23N2225/06—Measuring pressure for determining flow
    • 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
    • F23N2225/12—Measuring temperature room temperature
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/22—Fuel valves cooperating with magnets

Definitions

  • the invention relates to a method for adapting a burner-heated heater to an associated air / exhaust system according to the preamble of claim 1.
  • the length of the connected air / exhaust system has a significant influence on the quality of combustion, since different lengths of pipe both the air supply system and the exhaust system oppose different flow resistance of the air supply or exhaust gas discharge. Therefore, the heater must be adapted accordingly during installation to the air / exhaust system, so that the dependent on the prevailing flow resistances air flow or air mass flow, which is necessary for a corresponding lambda value> 1, can be met.
  • Another method for adjusting the speed of a fan of a heater is from the DE patent 198 46 207 C2 known in which in an electronic memory a map of characteristics for fan speeds is stored. Based on the existing pipe length of the air / exhaust system, a desired characteristic is selected and then the control of the fan speed based on the current gas flow performed, based on the desired characteristic for the current gas flow existing fan speed is compared with the desired fan speed and by means of electronic control An adjustment of the actual fan speed to the desired fan speed is done.
  • the method requires prior to installation of the heater, a measurement of the tube length of the air / exhaust system and a selected by the installer characteristic. This method is therefore dependent on the accuracy of the measurement of the tube lengths of the air / exhaust system and thus of subjective influences.
  • Object of the present invention is to make a reliable automatic adjustment of the fan speed of the heater to the found in the installation of the heater pipe length of the air / exhaust system.
  • the object of the present invention is achieved with the characterizing features of claim 1.
  • the invention has the advantage that a simple and quick installation of the heater is made possible, wherein the control of the heater is automatically adapted to the found air / exhaust system. By eliminating a panel or the measurement of the tube length incorrect positioning is avoided by the installer.
  • the characteristic curves of the map cover a range of starting speeds, there is a certain degree of inaccuracy in the regulation of the air / exhaust gas composition, so that it is appropriate to set the characteristics during installation to excess air, so that the exhaust emissions even in the worst case a correspondingly high Observe lambda value.
  • FIG. 1 shows a schematic representation of a heater
  • Figure 2 is a diagram for setting switching speeds
  • Figure 3 is a map with fan characteristics
  • Figure 4 is a characteristic for the fuel gas supply in conjunction with the course of the lambda value.
  • the heater in Figure 1 has a burner 10 which is arranged in a combustion chamber 12. To the combustion chamber 12 performs an air supply 14, is supplied via the combustion air to the burner 10.
  • the air feed 14 coaxially surrounds an exhaust gas outlet 16 which communicates with an exhaust pipe, not shown, in order to guide the exhaust gas into the atmosphere.
  • the air supply 14 with air tube and the exhaust discharge 16 with the exhaust pipe form an air / exhaust system.
  • a heat exchanger 20 is acted upon, which is connected via a feed line 21 and a return line 22 with a radiator assembly, not shown in connection.
  • an exhaust gas collecting hood 24 is arranged, which merges with the exhaust gas discharge 16.
  • a fan 26 is arranged above the exhaust gas collecting hood 24, which sucks the exhaust gas out of the combustion chamber 12 and supplies a corresponding volume flow or air mass flow combustion air via the air supply 14 to the burner 10 by the suction.
  • the blower 26 may also be arranged in the air supply 14.
  • the burner 10 is further connected via a gas line 31 and a gas control device 30 with a gas supply 32.
  • the gas control device 30 is provided with a modulation magnet 33, which ensures the corresponding adjustment of the gas control device 30.
  • the modulation magnet 33 is controlled by a control unit 35, which is connected via a control line 37 to the modulation magnet 33.
  • the modulation magnet 33 and the gas control device 30 form a gas metering device.
  • the control unit 35 contains the so-called automatic gas burner, with which the Control and monitoring of the burner with fully automatic ignition takes place.
  • the rotational speed of the blower 26 is detected by a rotational speed sensor 41, for example a Hall sensor.
  • the speed sensor 41 is connected via a signal line 42 with a fan electronics 43 in connection, which in turn is connected via a control line 44 to the controller 35 and a power supply line 45 to the blower 26.
  • a differential pressure measuring point 50 is arranged with a differential pressure switch 51, which emits a switching signal upon reaching a certain pressure.
  • the differential pressure measuring point 50 can be formed by a pitot tube, via which the back pressure in the air supply 14 is detected. Via a signal line 53, the differential pressure switch 51 is connected to the control unit 35.
  • the differential pressure measuring point 50 with the differential pressure switch 51 can also be used in the exhaust duct 16.
  • a temperature sensor 60 is further arranged, the signal is supplied via a further control line 61 to the control unit 35. Based on the flow temperature, the burner power via the modulation current i for controlling the modulating magnet 33 in response to a set setpoint, which is also set to the control unit 35, regulated.
  • This setpoint value can be weather-compensated via an outside temperature sensor and / or fixed via a setpoint value according to a required room temperature.
  • FIG. 2 shows a diagram of blower speeds n over the air volume flow V for different flow resistances in the air / exhaust system.
  • a desired value for a required air volume flow V S is stored, which is necessary, for example, to reach the necessary for releasing the fuel gas supply differential pressure value for switching the differential pressure switch 51.
  • a corresponding delivery volume of the blower is necessary as a function of the corresponding tube resistances or tube lengths of the air / exhaust system, ie, different blower speeds n for reaching the switching point for the required air volume flow V S for different tube lengths of the air / exhaust system necessary.
  • the switching point (pressure value) for the necessary air flow V S for example, 250 l / min at a lower speed n 1 achieved than in an air / exhaust system with a large pipe length, in which the required Air volume flow V S is reached only at a higher speed n 4 .
  • the determined in the switching point of the differential pressure switch 51 switching speed n X according to Figure 2 is detected by the speed sensor 41 and supplied to the control unit 35.
  • a characteristic map of characteristic curves 71, 72, 73, 74 for the fan speed n over the burner power Q and a characteristic curve 80 of the fuel gas supply are stored as the modulation current i over the burner power Q.
  • the blower characteristics 71 to 74 have, for example, speed levels for corresponding power ranges. But it is also possible to use a continuously controllable fan.
  • FIG. 4 the fuel-gas characteristic curve shown in FIG. 3 with the modulation current i above the burner output Q is again shown in connection with the air-ratio lambda. It can be seen that with increasing modulation current i, the burner power increases continuously and thereby via the modulating magnet 33 and the Gasregeleinrichung 30, the fuel gas supply is increased. The air supply necessary for the combustion is controlled via the selected blower characteristic K X.
  • the air ratio lambda Due to the stepped blower characteristic and the decoupling of the control of the fuel gas supply from the fan speed varies over the entire modulation range, the air ratio lambda.
  • the speed levels of the fan are switched depending on the power via a previously defined load field.
  • the switching point of the differential pressure switch at the first startup of the device 51 is not reached, continuously increased until the differential pressure switch 51 switches. This is the point at which the blower 26 delivers the required air flow V s of, for example, 250 l / min.
  • the switching speed reached at the switching point of the differential pressure switch 51 n X, n, for example, the switching speed 2 is achieved, for example, n 1350 min -1, is detected by the speed sensor 41 and transmitted to the control device 35th In the control unit 35 from a microcomputer, not shown, from the stored map of fan characteristics 71 to 74 selected the switching speed of 1350 min 1 associated fan characteristic K X.
  • the selected fan characteristic K X is in the present example according to Figure 3, the fan characteristic 73, which then serves as an operating characteristic for controlling the air supply based on the heat requirements.
  • the necessary burner power Q is retrieved from the control unit 35 according to the heat demand. Based on the required burner power Q, the control unit 35 controls the modulation current i for driving the modulating magnet 33, which in turn adjusts the gas control device 30. Regardless of the regulation of the fuel gas supply, the fan speed n is set via the speed controller 43 on the basis of the selected fan characteristic K X (operating characteristic). The speed levels in the selected fan characteristic K X are triggered by the present modulation.
  • the selected blower characteristic curve K X conveyed air volume flow V and the supplied via the combustion gas characteristic curve 80 amount of fuel gas, a fuel gas is generated / air mixture which is finally fed to the burner 10, and realizes the corresponding one of the heat demand burner output Q.
  • a temperature sensor 48 is arranged in the exhaust duct 16 and / or in the air supply 14, the signal is fed via a signal line 49 to the control unit 35.
  • the selected fan characteristic K X is compensated and stored as a compensated operating characteristic in the control unit, after which then the heater operates.
  • a further measured variable can be used with the temperature sensor 60 measured flow temperature, which can also provide a compensation value.

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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)

Claims (6)

  1. Procédé pour adapter un appareil de chauffage chauffé par brûleur à un système d'air/de gaz brûlé attribué à cet appareil, qui comprend une soufflerie pour l'air de combustion, un appareil de commande et un dispositif de dosage de gaz pour le gaz de combustion ainsi qu'un point de mesure de pression différentielle en liaison avec l'appareil de commande, la soufflerie pouvant être commandée en fonction de l'exigence de chaleur par l'appareil de commande, le régime de la soufflerie étant augmenté au moins en cas de mise en service de l'appareil de chauffage jusqu'à ce qu'un régime de commutation nx soit déterminé à un point de commutation par le point de mesure de pression différentielle, régime auquel un flux de volume d'air respectivement flux de masse d'air nécessaire pour une combustion optimale est présent et/ou auquel la valeur de pression prévue pour la libération de l'arrivée de gaz est atteinte, sachant que dans l'appareil de commande (35) est déposé un champ caractéristique de courbes caractéristiques de soufflerie (71, 72, 73, 74), qui peuvent être attribuées chacune à un régime de commutation nx défini, les courbes caractéristiques de soufflerie (71, 72, 73, 74) étant mises en place pour différentes résistances d'écoulement respectivement longueurs de tuyau du système d'air/de gaz brûlé dans l'appareil de chauffage livré, et une courbe caractéristique de soufflerie caractéristique Kx étant choisie comme courbe caractéristique de service à l'aide du régime de commutation nx déterminé à partir du champ caractérisé de lignes caractéristiques de soufflerie (71, 72, 73, 74), caractérisé en ce qu'une plage de régimes de commutation nx est attribuée à chacune des courbes caractéristiques de soufflerie (71, 72, 73, 74).
  2. Procédé selon la revendication 1, caractérisé en ce que les courbes caractéristiques de soufflerie (71, 72, 73, 74) sont réglées sur excédent d'air.
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce que l'arrivée de gaz de combustion et le régime de soufflerie sont réglés indépendamment les uns des autres par la demande de chaleur par la courbe caractéristique de soufflerie Kx choisie et la courbe caractéristique de gaz de combustion (80).
  4. Procédé selon la revendication 1, caractérisé en ce que la courbe caractéristique de soufflerie Kx choisie est compensée à l'aide d'une variation, due à la température, du flux de masse d'air.
  5. Procédé selon la revendication 4, caractérisé en ce que le régime de soufflerie n est réglé en fonction de la température du gaz brûlé et/ou de l'air de combustion, de telle sorte que le flux de masse d'air de l'air de combustion est maintenu sur la valeur correspondant à la demande de chaleur.
  6. Procédé selon la revendication 4, caractérisé en ce qu'au moins une sonde de mesure (48) enregistre la température du gaz brûlé et/ou de l'air de combustion, en ce que la sonde de mesure (48) envoie un signal correspondant à la température à l'appareil de commande (35) et en ce que l'appareil de commande (35) effectue la compensation des courbes caractéristiques de soufflerie Kx en fonction du signal.
EP02026220A 2002-01-31 2002-11-26 Procédé d'ajustement d'un appareil de chauffage incorporant un brûleur à son système d'échappement et/ou de tirage en air Expired - Lifetime EP1333227B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10203798 2002-01-31
DE10203798A DE10203798B4 (de) 2002-01-31 2002-01-31 Verfahren zur Anpassung eines brennerbeheizten Heizgerätes an ein diesem zugeordneten Luft-/Abgassystem

Publications (3)

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EP1333227A2 EP1333227A2 (fr) 2003-08-06
EP1333227A3 EP1333227A3 (fr) 2004-07-07
EP1333227B1 true EP1333227B1 (fr) 2008-01-23

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EP02026220A Expired - Lifetime EP1333227B1 (fr) 2002-01-31 2002-11-26 Procédé d'ajustement d'un appareil de chauffage incorporant un brûleur à son système d'échappement et/ou de tirage en air

Country Status (2)

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EP (1) EP1333227B1 (fr)
DE (2) DE10203798B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010057929A1 (fr) * 2008-11-18 2010-05-27 Bodart Et Gonay Foyer ferme et procede de regulation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307131A1 (de) * 2003-02-20 2004-09-02 Robert Bosch Gmbh Heizgerät und zugehöriges Betriebsverfahren
DE102005009017A1 (de) * 2005-02-28 2006-08-31 Kutzner + Weber Gmbh Feuerungsanlage, insbesondere System zur lufttechnischen bzw. abgastechnischen Regelung einer Feuerungsanlage
DE202010018511U1 (de) * 2010-03-10 2017-03-24 Ebm-Papst Landshut Gmbh Pneumatischer Verbund mit Massenausgleich
NL2006270C2 (nl) * 2011-02-21 2012-08-22 Dru Verwarming B V Gesloten haardsysteem met geforceerde luchtstroom.
PT108703B (pt) * 2015-07-17 2021-03-15 Bosch Termotecnologia, S.A. Dispositivo para aparelhos de aquecimento e processo para a operação de um dispositivo para aparelhos de aquecimento

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401196B (de) * 1992-02-07 1996-07-25 Vaillant Gmbh Heizgerät
AT406512B (de) * 1992-10-12 2000-06-26 Vaillant Gmbh Verfahren zum konstanthalten der maximal- und/oder minimalleistung eines einen gasbrenner aufweisenden wassererwärmers
TW294771B (fr) * 1995-01-30 1997-01-01 Gastar Co Ltd
DE19510425C2 (de) * 1995-03-24 1999-05-27 Bosch Gmbh Robert Verfahren und Vorrichtung zur Regelung eines Heizgerätes
AT408033B (de) * 1997-10-08 2001-08-27 Vaillant Gmbh Verfahren zur anpassung eines brennerbeheizten heizgerätes
DE19846207C2 (de) * 1998-08-19 2000-10-26 Wolf Gmbh Vorrichtung und Verfahren zur Einstellung der Drehzahl eines Gebläses einer Gasheizeinrichtung, wie insbesondere einer Gastherme
DE10109808C2 (de) * 2001-03-01 2003-12-04 Bosch Gmbh Robert Verfahren und Vorrichtung zur Anpassung eines brennerbetriebenen Heizgerätes an ein Luft-Abgas-System

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010057929A1 (fr) * 2008-11-18 2010-05-27 Bodart Et Gonay Foyer ferme et procede de regulation
BE1018339A3 (fr) * 2008-11-18 2010-09-07 Bodart Et Gonay Systeme d'amenee d'air et evacuation de gaz brules.

Also Published As

Publication number Publication date
EP1333227A2 (fr) 2003-08-06
DE10203798B4 (de) 2009-08-13
EP1333227A3 (fr) 2004-07-07
DE10203798A1 (de) 2003-08-21
DE50211601D1 (de) 2008-03-13

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