EP0548655B1 - Dispositif de chauffage - Google Patents

Dispositif de chauffage Download PDF

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Publication number
EP0548655B1
EP0548655B1 EP92120876A EP92120876A EP0548655B1 EP 0548655 B1 EP0548655 B1 EP 0548655B1 EP 92120876 A EP92120876 A EP 92120876A EP 92120876 A EP92120876 A EP 92120876A EP 0548655 B1 EP0548655 B1 EP 0548655B1
Authority
EP
European Patent Office
Prior art keywords
temperature
burner
flue gas
exceeded
threshold value
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
EP92120876A
Other languages
German (de)
English (en)
Other versions
EP0548655A1 (fr
Inventor
Joachim Berg
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.)
Nv Vaillant Sa
VAILLANT B.V.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Vaillant NV
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant BV
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, Vaillant NV, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant BV filed Critical Vaillant Austria GmbH
Publication of EP0548655A1 publication Critical patent/EP0548655A1/fr
Application granted granted Critical
Publication of EP0548655B1 publication Critical patent/EP0548655B1/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
    • F23N5/02—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
    • F23N5/24—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • 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
    • F23N2225/21—Measuring temperature outlet temperature
    • 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
    • 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
    • F23N2235/14—Fuel valves electromagnetically operated
    • 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
    • F23N2237/00—Controlling
    • F23N2237/10—High or low fire

Definitions

  • the invention relates to a heating device according to the preamble of the claim.
  • Exhaust systems or exhaust pipes for heating devices with low exhaust gas temperatures can be made entirely or partially of a flammable or only temperature-resistant material. It is only necessary to provide a safety temperature limiter that prevents the maximum permissible temperature of the exhaust pipe from being exceeded.
  • the safety temperature limiter is formed by a thermal work contact which switches off the burner when a certain exhaust gas limit temperature is reached.
  • the aim of the invention is to avoid these disadvantages and to propose a heating device of the type mentioned at the outset, which prevents the exhaust gas temperature from exceeding the maximum limit value.
  • the threshold value for the power reduction can be adjusted very simply by means of an encoder to the permissible temperatures for the exhaust pipe, whereby the same components can always be used, regardless of the materials used for the exhaust pipe.
  • Linking the actual values of the flow temperature and the exhaust gas temperature and their target value or threshold value by means of a microcomputer results in a very simple construction of an evaluation circuit, it being possible to use the evaluation circuit not only to protect the exhaust gas line against overheating care, but also to control the burner depending on the heat demand according to a heating curve.
  • the heating device has a burner 2 which is arranged in a combustion chamber 1 and is supplied with a fuel gas / air mixture via a blower 3 and a gas line 5 controlled via a solenoid valve 4.
  • a heat exchanger 6 is arranged above the burner 2 and is connected to a radiator device (not shown) via a feed line 7 and a return line 8 in which a pump 9 is arranged.
  • the air required for the blower 3 passes through an annular gap 11 surrounding an exhaust pipe 10 into the interior of the housing 12 and from there to the suction side of the blower 3.
  • a temperature sensor 13 is arranged, which is connected to an evaluation circuit 14 via a connecting line 20. This is also connected to a sensor 16 which detects the temperature of the feed water via a line 17.
  • the evaluation circuit 14 has an exhaust gas target temperature value transmitter 15 for selecting a threshold value for the emission of a signal that prevents the fuel supply.
  • the evaluation circuit controls the blower 3 via the line 18 in order to influence the load on the burner 3 and, via a line 19, the solenoid valve 4, which controls the gas supply to the burner 2.
  • the evaluation circuit 14 has a microprocessor 21 which also serves as a threshold circuit and which, when the temperature value of the exhaust gas approaches the set threshold value, for example up to 10 ° C., has an output of the burner 2 reducing signal.
  • the evaluation circuit 14 has a microprocessor 21 which is connected to the sensor 13 which detects the temperature of the exhaust gas via an analog-digital converter 22. Furthermore, an exhaust gas setpoint value transmitter 15, a sensor 16 that detects the temperature of the flow of a heating system (not shown in more detail) and a flow setpoint transmitter 25 are each connected on the input side to the microprocessor 21 via analog / digital converter 22. On the output side, the microprocessor 21 is connected via digital-analog converter 23 to the blower 3 of the burner 2 and the solenoid valve 4, which controls the gas supply to the burner. A display 26 and a voltage supply 24 are also connected to the microprocessor 21.
  • the functional sequence of the evaluation circuit 14 is shown in FIG. 3.
  • the actual exhaust gas temperature T Aist which is detected by the sensor 13, the set maximum value of the exhaust gas temperature T Amax and the target value for the flow temperature T Vsoll are processed as input variables .
  • the instantaneous exhaust gas temperature T Aist is continuously compared with the set maximum exhaust gas temperature T Amax . If the difference between T Amax - T Aist is zero or negative, the maximum permissible exhaust gas temperature has been reached or exceeded. In this case, the burner 2 is locked.
  • the target specification for the flow temperature T Vsoll is reduced according to a predetermined algorithm until the safety margin to the switch-off value is restored.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (1)

  1. Installation de chauffage avec un brûleur (2) chauffant un échangeur de chaleur (6), et avec un conduit d'évacuation des fumées (10) dans un matériau combustible ou peu résistant à la chaleur, dans la zone de raccordement duquel avec une chambre de combustion (1) abritant le brûleur (2), il est prévu un organe limiteur de température qui émet, en cas de dépassement d'une température limite, un signal agissant sur l'alimentation en combustible du brûleur (2), ledit organe étant formé par une sonde thermométrique (13) disposée dans le conduit (10), et par un circuit de traitement (14) de ses signaux, circuit qui comprend une fonction de seuil provoquant l'arrêt du brûleur (2) au moment où un premier seuil (TAmax) de température des fumées est dépassé, installation caractérisée par le fait que le circuit de traitement (14) comprend un microprocesseur (21) à l'entrée duquel sont connectés la sonde thermométrique (13) logée dans le conduit (10), un générateur de signaux de consigne (15) définissant le premier seuil (TAmax) de température des fumées et un deuxième seuil de température des fumées plus bas, et une sonde thermométrique (16) contrôlant la température de sortie, ainsi qu'un générateur de signaux de consigne (25) pour la température de sortie, microprocesseur dont la sortie est reliée à une électrovalve (4) réglant l'alimentation en combustible du brûleur (2) et, le cas échéant, à un ventilateur (3) coopérant avec le brûleur (2), et par le fait que le circuit de traitement (14) réduit de plus, suivant un algorithme prédéterminé, la consigne de température de sortie (TVcons) en cas de dépassement du seuil plus bas de sorte que la puissance du brûleur (2) est réduite en conséquence.
EP92120876A 1991-12-12 1992-12-08 Dispositif de chauffage Expired - Lifetime EP0548655B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0246991A AT401569B (de) 1991-12-12 1991-12-12 Heizeinrichtung
AT2469/91 1991-12-12

Publications (2)

Publication Number Publication Date
EP0548655A1 EP0548655A1 (fr) 1993-06-30
EP0548655B1 true EP0548655B1 (fr) 1997-05-14

Family

ID=3534921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120876A Expired - Lifetime EP0548655B1 (fr) 1991-12-12 1992-12-08 Dispositif de chauffage

Country Status (4)

Country Link
EP (1) EP0548655B1 (fr)
AT (2) AT401569B (fr)
DE (2) DE4242382A1 (fr)
DK (1) DK0548655T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024188595A1 (fr) * 2023-03-10 2024-09-19 Safi Brannsikring As Système de détection, d'avertissement et de prévention précoces de feux de cheminée

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325414C2 (de) * 1993-07-29 2000-02-17 Daimler Chrysler Ag Deformationssensor für eine Sicherheitseinrichtung zum Schutz von Fahrzeuginsassen bei einem Seitenaufprall
US5379794A (en) * 1994-01-25 1995-01-10 Emerson Electric Co. Gas control valve having polymeric material body combined with thermally responsive gas shutoff valve having metallic body
EP0892215B1 (fr) * 1997-07-18 2002-11-20 WEBASTO THERMOSYSTEME GmbH Procédé de commande de la protection de surchauffe pour un appareil de chauffage
PL200089B1 (pl) * 2000-02-02 2008-12-31 Vaillant Joh Gmbh & Co Grzejnik z ogranicznikiem ochronnym temperatury
GB0002263D0 (en) * 2000-02-02 2000-03-22 Smiths Industries Plc Gas appliances and control systems
DE102021006085A1 (de) 2021-12-09 2023-06-15 Truma Gerätetechnik GmbH & Co. KG Vorrichtung zum Erwärmen von Luft

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027863B (de) * 1955-12-07 1958-04-10 Vaillant Joh Kg Selbsttaetige Regelvorrichtung fuer Gas-Wasserheizer mit Waermetauscher
DE2500529C3 (de) * 1974-01-10 1982-04-15 Saunier Duval, S.A., Rueil-Malmaison Sicherheitsvorrichtung für Gas-Durchlauferhitzer
US4296727A (en) * 1980-04-02 1981-10-27 Micro-Burner Systems Corporation Furnace monitoring system
FR2549204B1 (fr) * 1983-07-13 1988-04-29 Maillet Marcel Generateur d'air souffle a temperature constante
FR2596501B1 (fr) * 1986-03-28 1990-04-27 Sdecc Dispositif de securite pour chaudiere a gaz du type a ventilation mecanique controlee
JPS63254315A (ja) * 1987-04-09 1988-10-21 Matsushita Electric Ind Co Ltd 温風暖房器の安全装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024188595A1 (fr) * 2023-03-10 2024-09-19 Safi Brannsikring As Système de détection, d'avertissement et de prévention précoces de feux de cheminée

Also Published As

Publication number Publication date
DK0548655T3 (da) 1997-12-01
DE4242382A1 (fr) 1993-06-17
DE59208493D1 (de) 1997-06-19
ATE153122T1 (de) 1997-05-15
AT401569B (de) 1996-10-25
ATA246991A (de) 1996-02-15
EP0548655A1 (fr) 1993-06-30

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