EP2888530B1 - Procédé de régulation d'un système de chauffage et système de chauffage - Google Patents

Procédé de régulation d'un système de chauffage et système de chauffage Download PDF

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Publication number
EP2888530B1
EP2888530B1 EP13753841.9A EP13753841A EP2888530B1 EP 2888530 B1 EP2888530 B1 EP 2888530B1 EP 13753841 A EP13753841 A EP 13753841A EP 2888530 B1 EP2888530 B1 EP 2888530B1
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EP
European Patent Office
Prior art keywords
blower
coefficient
volume flow
pressure
heating device
Prior art date
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EP13753841.9A
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German (de)
English (en)
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EP2888530A1 (fr
Inventor
Gerardo Rocha
Ricardo Jorge de Sousa Vieira
Mauro Simoes
Marco Marques
Luis Monteiro
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Robert Bosch GmbH
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Robert Bosch GmbH
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Classifications

    • 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
    • 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
    • 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
    • F23N2241/00—Applications
    • F23N2241/04—Heating water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05181—Controlling air to fuel ratio by using a single differential pressure detector

Definitions

  • the invention relates to a method for controlling a heating device according to the preamble of claim 1. Furthermore, the invention relates to a heating device, according to claim 6, for carrying out the method.
  • Such heaters are used to heat a heating medium, heating water is usually used.
  • the heating device in this case has a combustion chamber in which a fuel, such as a gas, is burned. In this case, combustion air is supplied via a blower. The heat released is transferred to the heating medium in a heat exchanger.
  • a correct ratio of the volume of combustion air supplied and the amount of fuel supplied is essential. If too little air is supplied, the fuel can not burn completely. This results in high pollutant emissions, in particular of carbon monoxide and hydrocarbon. If too much air is supplied, the combustion is cooled, which also leads to increased pollutant emissions.
  • the blower generally has an impeller whose speed influences a volume flow of the combustion air, ie the volume per unit time. The volume flow can be monitored.
  • This method requires a special air duct and several measuring points. It is therefore relatively expensive and therefore expensive. The measurement results can be falsified, for example due to contamination or parameter changes. In addition, there is the problem of drift and other aging phenomena.
  • DE 19 945 562 A1 a method for monitoring and / or control of a vehicle heater is described, wherein a rotational speed of a blower for controlling a volume flow of combustion air is regulated.
  • combustion in the combustion chamber is monitored by a pressure or sound pressure sensor.
  • the invention has for its object to overcome the disadvantages of the prior art and in particular to allow control of the heater with little effort.
  • a static pressure and / or a power consumption of the blower are determined, wherein a volumetric flow coefficient is determined on the basis of the rotational speed in conjunction with the static pressure and / or the power consumption.
  • a speed detection is usually provided anyway with variable controllable blowers.
  • only one sensor for detecting the static pressure and / or the power consumption of the fan must be provided. This can be realized with very little effort. In this case, such sensors are available as a mass-produced very cost.
  • reference values for a pressure coefficient and / or a power coefficient as a function of a volumetric flow coefficient at a Reference fan determined are taken into account in the determination of the flow rate.
  • the pressure coefficient can be determined after measuring the static pressure and the rotational speed.
  • the density of the combustion air can be considered approximately constant. To increase the accuracy of the density can also be detected in addition.
  • the diameter of the impeller is constant. By recording speed and power consumption, the power coefficient can be easily calculated.
  • the pressure coefficients or coefficients of performance calculated in each case on the basis of the measured rotational speed and the measured power consumption or of the determined static pressure can be determined on the basis of reference values, which were obtained with a geometrically similar fan and deposited, for example, in the form of characteristic curves. From this, the volumetric flow can be determined relatively simply using formula (3) above. The volume flow can therefore be determined with relatively little effort. To increase the reliability of the volume flow may optionally also in two ways in parallel In order to determine the volume flow with sufficient accuracy, the Reynolds number should be sufficiently high and influences of the viscosity should be low. This is usually the case.
  • the power consumption of the fan is determined from the recorded by an electric fan motor electric power, wherein an efficiency is taken into account. It is less expensive to detect the electrical power consumption than to determine a mechanical power of the impeller.
  • the mechanical power depends on the electrical power and the efficiency, which depends on a load and a motor speed. This efficiency can be determined for example by experiments and then deposited in a controller.
  • the static pressure in the flow direction behind the fan is determined.
  • the current air pressure can then be determined while the static pressure of the combustion air can be determined relatively accurately during operation.
  • the object is also achieved by the heating device for carrying out the method with the features of claim 6.
  • This heating device is used for heating a heating medium, in particular heating water, and has a combustion chamber into which combustion air can be supplied via a blower and fuel via a feed line.
  • the heating device has a rotational speed sensor and a pressure sensor and / or a power sensor.
  • a heating device which has a fan 1, a burner, a heat exchanger 3, a discharge channel 4 and a discharge pipe 5.
  • Combustion air is conveyed into a combustion chamber of the heating device via the blower 1.
  • the burner 2 is fuel, such as a gas, promoted. This is not shown.
  • this has a supply interface 1.2.
  • the heat released in the burner is transferred to a heating medium, such as heating water.
  • a volume flow is significantly influenced by a speed of the blower 1.
  • the speed of an impeller is therefore detected by means of a speed sensor 1.1, which is formed for example as a Hall sensor.
  • a pressure sensor 1.3 a static pressure of the combustion air between the fan 1 and burner 2 is determined.
  • the pressure sensor 1.3 and the speed sensor 1.1 are connected to a controller 6, which calculates a volume flow on the basis of the determined values for a speed of the impeller and the static pressure.
  • the controller 6 has a memory in which reference values for a pressure coefficient, a power coefficient and a volumetric flow coefficient are stored in the form of characteristic curves. These reference values have been determined on a reference fan and are applicable to fans with similar geometrical dimensions. The determination of the volume flow can therefore be relatively easy by detecting the speed and the static pressure.
  • Fig. 2 is one opposite Fig. 1 slightly modified embodiment shown.
  • the same and corresponding elements are provided with the same reference numerals.
  • a power consumption is measured by a power sensor and the controller 6 is provided.
  • a measurement of the electrical power which is supplied to a motor of the blower 1 takes place. Based on this power and the speed then the controller calculates the guided through the fan 1 to the burner 2 and in the combustion chamber volume flow.
  • Fig. 3 is a diagram in which in a first characteristic curve a pressure coefficient H and in a second characteristic curve a power coefficient P is plotted in each case over a volume flow coefficient F. These are characteristic curves that have been determined from reference values.
  • the method according to the invention and the heating device according to the invention thus make it possible to determine the volume flow with little effort. Only two sensors are required, namely a speed sensor and a pressure sensor or a speed sensor and a power sensor. Incidentally, the calculation is based on fixed values and dependencies. Thus, the determination of the volume flow is subject only to a low error rate. A clean, low-emission combustion can be ensured with it.

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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)
  • Air-Conditioning For Vehicles (AREA)

Claims (6)

  1. Procédé de régulation d'un système de chauffage qui présente une chambre de combustion dans laquelle est introduit de l'air comburant par le biais d'une soufflante commandable avec une roue de soufflante, une vitesse de rotation de la roue de soufflante étant détectée, caractérisé en ce qu'une pression statique et/ou une consommation de puissance de la soufflante sont mesurées, un coefficient de débit volumique étant déterminé à l'aide de la vitesse de rotation mesurée en association avec la pression statique mesurée et/ou en association avec la consommation de puissance mesurée, et un débit volumique d'air comburant étant déterminé à l'aide du coefficient de débit volumique.
  2. Procédé selon la revendication 1, caractérisé en ce que des valeurs de référence pour un coefficient de pression et/ou un coefficient de puissance sont déterminées en fonction d'un coefficient de débit volumique, les valeurs de référence étant prises en compte lors de la détermination du débit volumique.
  3. Procédé selon la revendication 2, caractérisé en ce que les valeurs de référence sont consignées sous la forme d'une courbe caractéristique de coefficients de pression et/ou d'une courbe caractéristique de coefficients de puissance.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la consommation de puissance de la soufflante est déterminée à partir de la puissance électrique consommée par un moteur de soufflante électrique, un rendement étant pris en compte.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la pression statique est déterminée dans la direction d'écoulement derrière la soufflante.
  6. Système de chauffage pour chauffer un fluide de chauffage, en particulier de l'eau chaude, comprenant une chambre de combustion dans laquelle de l'air comburant peut être acheminé par le biais d'une soufflante (1) et du combustible peut être acheminé par le biais d'une conduite d'alimentation, le système de chauffage présentant un capteur de vitesse de rotation (1.1) et caractérisé en ce que ledit système de chauffage présente un capteur de pression (1.3) pour déterminer une pression statique et/ou un capteur de puissance (1.4) pour déterminer une consommation de puissance de la soufflante et une commande (6) pour déterminer un débit volumique à l'aide d'un coefficient de débit volumique qui est déterminé à partir de la vitesse de rotation mesurée en association avec la pression mesurée et/ou en association avec la consommation de puissance mesurée, le réglage du système de chauffage s'effectuant avec un procédé selon l'une quelconque des revendications 1 à 5.
EP13753841.9A 2012-08-23 2013-08-19 Procédé de régulation d'un système de chauffage et système de chauffage Active EP2888530B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012016606.0A DE102012016606A1 (de) 2012-08-23 2012-08-23 Verfahren zur Regelung einer Heizeinrichtung und Heizeinrichtung
PCT/EP2013/067215 WO2014029721A1 (fr) 2012-08-23 2013-08-19 Procédé de régulation d'un système de chauffage et système de chauffage

Publications (2)

Publication Number Publication Date
EP2888530A1 EP2888530A1 (fr) 2015-07-01
EP2888530B1 true EP2888530B1 (fr) 2017-04-12

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Country Status (9)

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US (1) US20150233578A1 (fr)
EP (1) EP2888530B1 (fr)
KR (1) KR102119376B1 (fr)
CN (1) CN104583679B (fr)
AU (1) AU2013305101B2 (fr)
DE (1) DE102012016606A1 (fr)
ES (1) ES2632942T3 (fr)
PT (1) PT2888530T (fr)
WO (1) WO2014029721A1 (fr)

Cited By (1)

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WO2020043887A1 (fr) * 2018-08-30 2020-03-05 Bosch Termotecnologia S.A. Procédé de régulation d'un dispositif de chauffage et dispositif de chauffage

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EP2413047B2 (fr) † 2010-07-30 2021-11-17 Grundfos Management A/S Unité de chauffage d'eau potable
CA2977630C (fr) * 2015-03-17 2023-07-25 Intergas Heating Assets B.V. Dispositif et procede pour le melange de gaz combustible et d'air de combustion, installation d'eau chaude equipee de celui-ci, capteur de debit massique thermique correspondant e t procede de mesure d'un debit massique d'un ecoulement de gaz
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
FR3039260B1 (fr) * 2015-07-23 2017-08-25 Bosch Gmbh Robert Procede de gestion d'une chaudiere a condensation et chadiere pour la mise en oeuvre du procede
CN106642711B (zh) * 2015-09-22 2022-09-16 艾欧史密斯(中国)热水器有限公司 双传感燃烧系统
US10962257B2 (en) * 2015-12-09 2021-03-30 Fulton Group N.A., Inc. Compact fluid heating system with high bulk heat flux using elevated heat exchanger pressure drop
ES2703449T3 (es) * 2016-09-14 2019-03-08 Valeo Thermal Commercial Vehicles Germany GmbH Procedimiento para mantener constante un flujo de masa de aire de combustión alimentado a la cámara de combustión de un aparato de calefacción móvil y aparato de calefacción que trabaja según este procedimiento
EP3321582A1 (fr) * 2016-11-14 2018-05-16 Hubert Ziegler Dispositif de régulation du tirage d'une cheminée et procédé de régulation constante du tirage d'une cheminée
DE102018104242A1 (de) * 2018-02-26 2019-08-29 Eberspächer Climate Control Systems GmbH & Co. KG Verfahren zum Betreiben eines brennstoffbetriebenen Fahrzeugheizgeräts

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EP0638771A1 (fr) 1993-08-11 1995-02-15 Schott Glaswerke Dispositif de cuisson au gaz avec brûleurs avec rayonnement à gas diposes sous une surface de cuisson continue faite en un matériel comme de la vitro-céramique laissant passer le rayonnement de chaleur
DE10159033A1 (de) 2000-12-01 2002-09-05 Vaillant Gmbh Regelungsverfahren für Heizungsgeräte
DE10109808A1 (de) 2001-03-01 2002-09-12 Bosch Gmbh Robert Verfahren und Vorrichtung zur Anpassung eines brennerbetriebenen Heizgerätes an ein Luft-Abgas-System
DE10109808C2 (de) 2001-03-01 2003-12-04 Bosch Gmbh Robert Verfahren und Vorrichtung zur Anpassung eines brennerbetriebenen Heizgerätes an ein Luft-Abgas-System
DE10144404A1 (de) 2001-09-10 2003-04-24 Webasto Thermosysteme Gmbh Mobiles Zusatzheizgerät mit Ermittlung der Luftdichte
EP1519113A2 (fr) 2003-09-23 2005-03-30 Vaillant GmbH Procédé pour adapter la puissance de chauffage d'un appareil de chauffage à ventilation forcée aux pertes de pression individuelles d'une conduite d'amenée d'air frais et d'évacuation de gaz d'échappement
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020043887A1 (fr) * 2018-08-30 2020-03-05 Bosch Termotecnologia S.A. Procédé de régulation d'un dispositif de chauffage et dispositif de chauffage

Also Published As

Publication number Publication date
EP2888530A1 (fr) 2015-07-01
CN104583679A (zh) 2015-04-29
KR102119376B1 (ko) 2020-06-09
WO2014029721A1 (fr) 2014-02-27
KR20150045440A (ko) 2015-04-28
ES2632942T3 (es) 2017-09-18
CN104583679B (zh) 2017-11-17
US20150233578A1 (en) 2015-08-20
AU2013305101B2 (en) 2017-08-24
AU2013305101A1 (en) 2015-04-09
DE102012016606A1 (de) 2014-02-27
PT2888530T (pt) 2017-05-08

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