EP0429034A2 - Procédé de commande d'une chaudière - Google Patents

Procédé de commande d'une chaudière Download PDF

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Publication number
EP0429034A2
EP0429034A2 EP90122065A EP90122065A EP0429034A2 EP 0429034 A2 EP0429034 A2 EP 0429034A2 EP 90122065 A EP90122065 A EP 90122065A EP 90122065 A EP90122065 A EP 90122065A EP 0429034 A2 EP0429034 A2 EP 0429034A2
Authority
EP
European Patent Office
Prior art keywords
housing
burner
interior
heater
chamber
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
EP90122065A
Other languages
German (de)
English (en)
Other versions
EP0429034B1 (fr
EP0429034A3 (en
Inventor
Paul Heimbach
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.)
N.V. VAILLANT S.A.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
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 Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd filed Critical Vaillant Austria GmbH
Publication of EP0429034A2 publication Critical patent/EP0429034A2/fr
Publication of EP0429034A3 publication Critical patent/EP0429034A3/de
Application granted granted Critical
Publication of EP0429034B1 publication Critical patent/EP0429034B1/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
    • F23N1/02—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
    • 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
    • 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
    • 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
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/13—Measuring temperature outdoor 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
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • 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
    • F23N2235/12—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
    • 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
    • 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

Definitions

  • the invention relates to a method for controlling a heating device with a premix gas burner, which chamber, together with a heat exchanger, is arranged in a housing of the heating device which is sealed off from the environment and sealed with the exception of an air supply line, and which chamber is sealed relative to the latter is connected to an exhaust gas line, the burner being acted upon by a controllable gas throughput actuator and the speed of a fan supplying the burner from the interior of the housing can be controlled in terms of its speed depending on the gas throughput and the air supply line opens into an air chamber arranged in the interior of the housing, which is connected to the interior of the housing via an actuator.
  • the control of such heaters takes place in such a way that the application of gas and air to the burner is adapted to the respective heat requirement.
  • the mixing ratio of the two mixture components which is described by the air ratio, should be only slightly above the stoichiometric value and should be approximately constant or correspond to a value adapted to the respective thermal load.
  • the aim of the invention is to avoid these disadvantages.
  • this is achieved in that, when the burner output is reduced, the flow resistance of the air flowing into the interior of the housing is increased in a predetermined manner by adjusting the actuator between the air chamber and the interior of the housing and is also reduced when the burner output is increased.
  • the return to the target value is then identical to the return of the detuning to zero. It is achieved in that when the burner output is reduced in comparison to the out of tune state, an additional resistance is generated in the air supply to the interior of the fan, and vice versa when the burner output increases.
  • the prerequisite is a clear link between burner output, fan speed and pressure curve. Exceeding the setting range on the actuator can be used to switch off the burner.
  • Another object of the invention is to propose a heater for carrying out the method according to the invention.
  • a heater for carrying out the method according to the invention with a premix gas burner which, together with a heat exchanger, is arranged in a housing of the heater which is arranged in the interior of the heater and is sealed with respect to the environment, with the exception of an air supply line, and which chamber is sealed with respect to this, which chamber with an exhaust gas line is connected, wherein the burner is acted upon by a controllable gas flow actuator and the speed of a fan supplying the burner from the interior of the housing can be controlled depending on the gas flow and the air supply line opens into an air chamber arranged in the interior of the housing, which via a Actuator is connected to the interior of the housing, it is therefore proposed that the gas flow actuator and the blower motor respond to electrical signals from a control device that controls the coupling of gas and air flow according to predetermined target values.
  • the air chamber is connected to the interior of the housing by an actuator which is controlled directly or indirectly by the pressure difference between the two spaces, the actuator being preferably formed by a diaphragm valve.
  • the actuator being preferably formed by a diaphragm valve.
  • the actuator is equipped with limit switches for switching off the burner, thereby simply switching off the burner It can also be ensured if the actuating range of the actuator is no longer sufficient to return to the intended target value.
  • the heater according to the invention has a sealed housing 20, in the interior 19 of which a sealed chamber 7 is arranged, in which the burner 6 and a heat exchanger 8 are arranged.
  • This chamber 7 is connected via the exhaust line 12 to an exhaust duct or an outlet opening.
  • This exhaust line 12 is surrounded by an air supply line 9, which opens into the interior of the sealed housing 20 and is arranged coaxially with the exhaust line 12.
  • a monitoring electrode 14 for monitoring the burner function and an ignition electrode 13 also protrude into the chamber 7, into which the outlet of a blower 1 also opens, which sucks in air from the interior of the housing and conveys it into the chamber 7, in which an overpressure builds up, which is due to the resistance that the heat exchanger 8 opposes to the outflow of the exhaust gases.
  • a gas nozzle 5 opens into the suction opening 21 of the blower 1 and is acted upon by a gas actuator 4 which is adjustable via electrical signals and which is arranged in a gas line 3.
  • a flow temperature sensor 15 is arranged, which is connected to the control unit 18, which is also arranged in the housing 20, to which the gas flow rate control element 4 and the blower 1 are also connected, and to which control signals are applied.
  • an air chamber 10 is provided, into which the air supply pipe 9 opens directly and which is connected to the interior 19 of the housing 20, for example via a diaphragm control valve.
  • control unit 18 processes the signals coming alternatively from a room thermostat (not shown) and an outside temperature sensor or the signals coming from a heating water temperature sensor and a hot water temperature sensor for controlling the burner.
  • the gas control valve 4 and the blower 1 are activated, the activation of these two elements taking place in accordance with the operating characteristic of the heater, which is shown in FIG. 4 for example and will be explained in more detail later.
  • a housing pressure sensor (not shown) can be provided in the interior 19 of the housing 20, which is connected to a comparator arranged in the control device 19, which correspondingly varies an air control valve which, like the diaphragm control valve 11 shown in FIG. 1, varies the inflow resistance of the air controls.
  • Figure 3 shows the pressure curve in the heater, from which it can be seen that there is an overpressure on the exhaust side and a negative pressure on the air side.
  • the performance of the burner 6 is essentially dependent on the delivery head of the blower 1, it being assumed that an amount of gas substantially corresponding to the stoichiometric ratio is added to the air supplied to the burner 6.
  • the nominal load point A of the blower 1 corresponds to the intersection of the resistance characteristic AC of the heater with the blower characteristic U 1, n 1 defined by the supply voltage U 1 and the speed n 1 of the blower.
  • the resistance characteristic of the heater can be shifted towards larger delivery heights of the blower, with the exception of the nominal output point A. This shift results from the requirement that at a
  • the correction element x is to be determined as a function of the desired negative pressure in the housing in such a way that the fan characteristic curve (U x , n x ) passing through point D is achieved.
  • the blower operating point must be shifted from point E to point D on the blower characteristic curve U x , n x which is controlled for the new load state. This is accomplished by increasing the resistance of the air actuator 11 that controls the passage between the air chamber 10 and the interior 19 of the housing 20.

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)
  • General Induction Heating (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Resistance Heating (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP90122065A 1989-11-24 1990-11-19 Procédé de commande d'une chaudière Expired - Lifetime EP0429034B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0268689A AT397851B (de) 1989-11-24 1989-11-24 Heizgerät
AT2686/89 1989-11-24

Publications (3)

Publication Number Publication Date
EP0429034A2 true EP0429034A2 (fr) 1991-05-29
EP0429034A3 EP0429034A3 (en) 1992-05-27
EP0429034B1 EP0429034B1 (fr) 1996-06-05

Family

ID=3538680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122065A Expired - Lifetime EP0429034B1 (fr) 1989-11-24 1990-11-19 Procédé de commande d'une chaudière

Country Status (3)

Country Link
EP (1) EP0429034B1 (fr)
AT (2) AT397851B (fr)
DE (2) DE59010357D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303700A1 (de) * 1993-02-09 1994-08-18 Buderus Heiztechnik Gmbh Vorrichtung zur Regelung des Gas-Luft-Verhältnisses bei einem Gasbrenner
EP0909922A1 (fr) * 1997-10-17 1999-04-21 IABER S.p.A. Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021112034A1 (de) * 2021-05-07 2022-11-10 Pilz Gmbh & Co. Kg Verfahren zur Überwachung eines Betriebs eines Gasbrennersystems und Gasbrennersystem
DE102022133634A1 (de) 2022-12-16 2024-06-27 Vaillant Gmbh Verfahren zum Betreiben eines Heizgerätes, Computerprogramm, Regel- und Steuergerät, Heizgerät und Verwendung einer Drosseleinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388073A (en) * 1941-04-29 1945-10-30 Gen Electric Fluid flow control
US3978883A (en) * 1974-05-06 1976-09-07 Danfoss A/S Device for regulating the combustion air of a furnace, especially with oil- or gasburner and blower for heating installations
JPS59153024A (ja) * 1983-02-22 1984-08-31 Matsushita Electric Ind Co Ltd 給湯装置
JPS6391428A (ja) * 1986-10-03 1988-04-22 Rinnai Corp 強制送風式燃焼装置
EP0303559A2 (fr) * 1987-08-13 1989-02-15 Joh. Vaillant GmbH u. Co. Conduite d'air de combustion au brûleur d'un appareil chauffé par un brûleur, par exemple d'un chauffeur d'eau
EP0424358A2 (fr) * 1989-10-20 1991-04-24 Joh. Vaillant GmbH u. Co. Appareil de chauffage avec un dispositif de commande de la quantité de l'air de combustion

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754423A1 (de) * 1977-12-07 1979-06-13 Vaillant Joh Gmbh & Co Feuerstaette
DE3147857A1 (de) * 1980-11-27 1983-06-16 Honeywell B.V., Amsterdam Regeleinrichtung
DE3342339A1 (de) * 1983-11-23 1985-05-30 Siemens AG, 1000 Berlin und 8000 München Regelvorrichtung fuer einen heizungsbrenner
DE3517471A1 (de) * 1984-05-19 1985-11-28 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Regelung fuer das brennstoff-luftverhaeltnis einer brennstoffbeheizten waermequelle
AT389933B (de) * 1987-06-05 1990-02-26 Vaillant Gmbh Einrichtung zur steuerung der brennstoffzufuhr zu einem brennstoffbeheizten geraet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388073A (en) * 1941-04-29 1945-10-30 Gen Electric Fluid flow control
US3978883A (en) * 1974-05-06 1976-09-07 Danfoss A/S Device for regulating the combustion air of a furnace, especially with oil- or gasburner and blower for heating installations
JPS59153024A (ja) * 1983-02-22 1984-08-31 Matsushita Electric Ind Co Ltd 給湯装置
JPS6391428A (ja) * 1986-10-03 1988-04-22 Rinnai Corp 強制送風式燃焼装置
EP0303559A2 (fr) * 1987-08-13 1989-02-15 Joh. Vaillant GmbH u. Co. Conduite d'air de combustion au brûleur d'un appareil chauffé par un brûleur, par exemple d'un chauffeur d'eau
EP0424358A2 (fr) * 1989-10-20 1991-04-24 Joh. Vaillant GmbH u. Co. Appareil de chauffage avec un dispositif de commande de la quantité de l'air de combustion

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 325 (M-737)(3172) 5. September 1988 & JP-A-63 091 428 ( RINNAI CORP ) 22. April 1988 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 284 (M-348)(1721) 26. Dezember 1984 & JP-A-59 153 024 ( MATSUSHITA DENKI ) 31. August 1984 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303700A1 (de) * 1993-02-09 1994-08-18 Buderus Heiztechnik Gmbh Vorrichtung zur Regelung des Gas-Luft-Verhältnisses bei einem Gasbrenner
DE4303700C2 (de) * 1993-02-09 1998-02-26 Buderus Heiztechnik Gmbh Vorrichtung zur Regelung des Gas-Luft-Verhältnisses bei einem Gasvormischbrenner
EP0909922A1 (fr) * 1997-10-17 1999-04-21 IABER S.p.A. Système de commande combinée à gaz et à air pour commander la combustion d'une chaudière à gaz

Also Published As

Publication number Publication date
DE59010357D1 (de) 1996-07-11
ATE139023T1 (de) 1996-06-15
EP0429034B1 (fr) 1996-06-05
EP0429034A3 (en) 1992-05-27
DE4037397A1 (de) 1991-05-29
AT397851B (de) 1994-07-25
ATA268689A (de) 1993-11-15

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