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EP0604388A1 - Dispositif de réglage de l'alimentation d'air comburant pour un foyer - Google Patents

Dispositif de réglage de l'alimentation d'air comburant pour un foyer Download PDF

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Publication number
EP0604388A1
EP0604388A1 EP93890245A EP93890245A EP0604388A1 EP 0604388 A1 EP0604388 A1 EP 0604388A1 EP 93890245 A EP93890245 A EP 93890245A EP 93890245 A EP93890245 A EP 93890245A EP 0604388 A1 EP0604388 A1 EP 0604388A1
Authority
EP
European Patent Office
Prior art keywords
combustion
combustion chamber
closure member
stove
lambda probe
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
EP93890245A
Other languages
German (de)
English (en)
Other versions
EP0604388B1 (fr
Inventor
Kurt Pfisterer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0604388A1 publication Critical patent/EP0604388A1/fr
Application granted granted Critical
Publication of EP0604388B1 publication Critical patent/EP0604388B1/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
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/02—Closed stoves
    • F24B1/028—Closed stoves with means for regulating combustion
    • 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
    • F23N2225/16—Measuring temperature burner temperature
    • 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
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/10—Air or combustion gas valves or dampers power assisted, e.g. using electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2239/00—Fuels
    • F23N2239/02—Solid fuels
    • 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
    • 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

Definitions

  • the invention relates to a device for regulating the combustion air supply in a furnace, in particular a tiled stove, with a closure element arranged in the combustion chamber door or in an air supply duct opening into the combustion chamber, with a thermocouple arranged in the combustion gas path of the furnace, and preferably with an actuatable by the combustion chamber door safety device formed by an electrical door contact, the temperature sensor and the safety device being operatively connected to a control device which is coupled to an adjusting device, for example a thermostatic motor, for the closure member.
  • a device has become known, for example, from AT-PS 395 475.
  • the control device is influenced by the temperature sensor in such a way that the closure member, which regulates the supply of the combustion air, remains fully open until the fuels have completely burned off and the temperature of the combustion gases thus falls below a predetermined value. Then the closure member is completely closed and the supply of combustion air is completely prevented, so that there is no air flow in the combustion chamber through which the stored heat is dissipated in an undesirable manner via the fireplace.
  • the fact that the control device is influenced not only by the temperature sensor, but also by the safety device which can be actuated by the combustion chamber door, prevents the closure element from remaining closed when fuel is being refilled into the combustion chamber, and therefore no combustion air supply for the refilled fuel.
  • This known device thus ensures maximum security against flue gas explosions and prevents undesired dissipation of the stored heat, but optimal control of the combustion air supply during the burnup until the end thereof is not possible with this known device, since in this known device the closure member during the burnup is always fully open.
  • the CO content in the combustion gas which is discharged through the chimney is dependent on the one hand on the temperature in the furnace, on the other hand on the quantity of combustion air supplied to the furnace and thus on the position of the closure member.
  • the higher the temperature in the combustion chamber the lower the air required for combustion. If an equal amount of combustion air is now always fed into the combustion chamber, the amount of residual oxygen in the combustion gas and thus the CO content increase with a lower requirement for combustion air.
  • increased CO levels cause environmental pollution.
  • an excess of air in the combustion chamber cools it and the efficiency of the furnace deteriorates as a result.
  • the object of the present invention is therefore to avoid the disadvantage of the known device and to provide a device which makes it possible to keep the CO content in the combustion gas at an optimal value.
  • the invention proposes that the control device is additionally operatively connected to a lambda probe arranged in the combustion gas path of the furnace.
  • the output signal of the lambda probe corresponds to the residual oxygen content in the combustion gas according to a characteristic curve assigned to this lambda probe, so that by means of this lambda probe via the control device the adjusting device for the closure member is influenced in such a way and thus the amount of combustion air supplied is controlled during the combustion in such a way that the combustion gas only uses the least possible Contains residual oxygen and thus the CO emissions are reduced to a minimum.
  • the combustion air supply is thus regulated both as a function of the temperature in the combustion chamber and as a function of the residual oxygen in the combustion gas, i.e. as a function of those values which are decisive for cheap combustion with optimum efficiency and the lowest environmental impact.
  • the closure member is thus not only adjusted between an open position and a closed position, but rather intermediate positions of the closure member are also effected by the control device and thus the amount of combustion air supplied is regulated.
  • the adjusting device is coupled to a position transmitter, for example formed by a rotary potentiometer, which is operatively connected to the control device.
  • a heated lambda probe is preferably provided, whereby the operating temperature required for the proper functioning of the lambda probe is guaranteed even at the start of the combustion process.
  • the lambda probe is arranged according to the invention in the connection piece to the chimney connection.
  • the temperature sensor should measure the temperature in the combustion chamber, since the combustion temperature is a controlled variable for the supply of the combustion air and thus for the position of the shutter forms. For this reason, the temperature sensor is expediently provided in the combustion gas path in the region of the outlet opening of the combustion gases from the combustion chamber.
  • the control device which is coupled to the adjustment device for the closure member, effects a linear adjustment of this adjustment device, so that, in order to achieve optimal regulation, the air inlet openings of the closure member also have to be linearly enlarged or reduced.
  • the closure member consists of a door or the like which can be pivoted about an axis, a linear change in the supply of combustion air is not guaranteed.
  • the closure member is provided with air inlet openings which can be opened or closed linearly by the adjusting device, so that when the adjusting device is adjusted linearly by changing the controlled variables, the size of the air inlet openings also takes place linearly in the desired manner.
  • the closure member consists of two plates which can be displaced relative to one another and have the air inlet openings. When one of these plates is displaced relative to the other, the air access openings in the two plates overlap either completely, partially or not at all, so that the desired linear change in the air supply is ensured.
  • FIG. 1 shows a furnace with the principle of the device according to the invention.
  • Fig.2 shows the closure member together with the adjusting device on a larger scale.
  • the furnace shown in the drawing has a combustion chamber door 1 for refilling the solid fuel and an ash door 2 closing the ash compartment, in which an opening for the supply of combustion air is arranged, which can be closed by a closure member 3 shown in more detail in FIG.
  • the combustion chamber located in the interior of the furnace and accessible through the combustion chamber door 1 has an outlet opening 4 for the combustion gases, which is connected via a connecting piece 5 to a chimney located in the building, through which the combustion gases formed during the combustion are discharged.
  • the closable by the closure member 3 opening for the supply of combustion air does not of course have to be provided in the ash door 2, but can also be arranged at another location, for example in the combustion chamber door 1 or in a separate air supply duct opening into the combustion chamber.
  • a heated lambda probe 6 is provided, which generates an output signal corresponding to the 0 2 content of the combustion gases, which is connected via an electrical line 7 to an electronic control device 8, which can be attached anywhere outside the furnace.
  • thermocouple 9 which generates an electrical voltage proportional to the burn-up temperature.
  • the thermocouple is connected to the electronic control device 8 via an electrical line 13.
  • an electrical door contact 11 is provided which is actuated when the combustion chamber door 1 is opened and closed and which is connected to the control device 8 via an electrical line 12.
  • the closure member 3 consists of two plates, of which the upper plate 14 is visible, which is displaceable in the direction of the double arrow 15 relative to the plate underneath.
  • the displacement takes place by means of an adjusting device 16, for example formed by a thermal actuator, via a linkage 17.
  • the adjusting device is connected to the control device 8 via an electrical line 10 (see FIG. 1).
  • Such a thermostatic motor 16 is provided with a reset device which opens the closure member 3 in the event of a power failure in order to prevent this closure member 3 from being opened when it is burned off and therefore no combustion air being supplied.
  • a thermal actuator contains an expansion material which expands when the current is heated and closes the closure member 3, but in the event of an interruption in the power supply, that is to say in the event of a power failure, its volume is reduced and the closure member 3 is thereby opened.
  • Both the upper plate 14 and the plate located below have air access openings 18 which, depending on the position of the two plates relative to one another, more or less overlap one another, as a result of which the cross section of these air access openings which determines the air access with a linear displacement of the plate 14 relative to the one below it Plate is changed linearly by means of the adjusting device 16.
  • the linkage 17 is also coupled to a position transmitter formed by a rotary potentiometer 19, which, likewise via the electrical line 10 (see FIG. 1), provides feedback on the position of the closure member 3 to the control device 8.
  • the signals emitted by the temperature sensor 9 and by the lambda probe 6 are used in the control device 8 in such a way that an optimal supply of combustion air takes place via the closure member 3, by means of which the residual oxygen content in the combustion gas is kept as low as possible and no deterioration in the CO emission due to lack of oxygen.
  • the safety device formed by the door contact 11 prevents the closure member 3 from being closed after opening the combustion chamber door 1 for adding fuel, and therefore no combustion air is supplied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)
EP93890245A 1992-12-22 1993-12-16 Dispositif de réglage de l'alimentation d'air comburant pour un foyer Expired - Lifetime EP0604388B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2544/92 1992-12-22
AT0254492A AT398483B (de) 1992-12-22 1992-12-22 Vorrichtung zur regelung der verbrennungsluftzufuhr bei einem ofen

Publications (2)

Publication Number Publication Date
EP0604388A1 true EP0604388A1 (fr) 1994-06-29
EP0604388B1 EP0604388B1 (fr) 1998-03-25

Family

ID=3536171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93890245A Expired - Lifetime EP0604388B1 (fr) 1992-12-22 1993-12-16 Dispositif de réglage de l'alimentation d'air comburant pour un foyer

Country Status (3)

Country Link
EP (1) EP0604388B1 (fr)
AT (1) AT398483B (fr)
DE (1) DE59308306D1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999064789A1 (fr) * 1998-05-29 1999-12-16 Morsø Jernstøberi A/S Fourneau a combustible solide
EP1118816A3 (fr) * 2000-01-21 2003-12-03 Spiess Ofentechnik AG Poêle et dispositif pour ameliorer des caractéristiques de combustion d'une telle poêle
WO2004072553A1 (fr) * 2003-02-14 2004-08-26 Fpi Fireplace Products International Ltd. Systeme et procede de regulation de tirage pour systemes de chauffage
DE102008057697A1 (de) 2008-11-17 2010-05-20 Uwe Kannengiesser Vorrichtung und Verfahren zum Umrüsten von Holzöfen auf elektronisch geregelten Abbrand
EP2085694A3 (fr) * 2008-01-30 2013-05-15 Hwam A/S Poêle à bois commandé électroniquement
EP2208938A3 (fr) * 2009-01-15 2015-03-04 Spartherm Feuerungstechnik GmbH Dispositif de combustion de combustibles solides
US9803870B2 (en) 2011-11-07 2017-10-31 Ihs Innovation Aps Method for burning a fuel in a wood stove, a wood stove with a controller; and an air regulator for a wood stove
US9945563B2 (en) 2011-12-20 2018-04-17 Rudy Cyris Very shallow heating apparatus with very high yield and a wide view

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016221446A1 (de) * 2016-11-02 2018-05-03 BSH Hausgeräte GmbH Kalibrieren eines Sauerstoffsensors eines Haushaltsgeräts

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH180008A (de) * 1934-10-26 1935-10-15 Wagner Rudolf Zugsverteilungs- und Regelungsvorrichtung in Feuerungsanlagen.
DE1554730A1 (de) * 1964-08-28 1970-07-09 Gaggenau Eisenwerk Einrichtung zur Absperrung bzw. Freigabe von Abgas- oder Rauchgaskanaelen
US4150939A (en) * 1977-08-22 1979-04-24 Reliance Instrument Manufacturing Corp. Differential controller for positioning combustion system
JPH02195244A (ja) * 1989-01-25 1990-08-01 Fujikura Ltd 燃焼制御用電子素子の長寿命化方法
EP0409790A1 (fr) * 1989-07-19 1991-01-23 Willi Hager Installation de combustion
AT395475B (de) * 1987-09-23 1993-01-25 Pfisterer Kurt Vorrichtung zur regelung der verbrennungsluftzufuhr bei einem ofen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH180008A (de) * 1934-10-26 1935-10-15 Wagner Rudolf Zugsverteilungs- und Regelungsvorrichtung in Feuerungsanlagen.
DE1554730A1 (de) * 1964-08-28 1970-07-09 Gaggenau Eisenwerk Einrichtung zur Absperrung bzw. Freigabe von Abgas- oder Rauchgaskanaelen
US4150939A (en) * 1977-08-22 1979-04-24 Reliance Instrument Manufacturing Corp. Differential controller for positioning combustion system
AT395475B (de) * 1987-09-23 1993-01-25 Pfisterer Kurt Vorrichtung zur regelung der verbrennungsluftzufuhr bei einem ofen
JPH02195244A (ja) * 1989-01-25 1990-08-01 Fujikura Ltd 燃焼制御用電子素子の長寿命化方法
EP0409790A1 (fr) * 1989-07-19 1991-01-23 Willi Hager Installation de combustion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 14, no. 482 (P - 1119) 19 October 1990 (1990-10-19) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999064789A1 (fr) * 1998-05-29 1999-12-16 Morsø Jernstøberi A/S Fourneau a combustible solide
US6595199B1 (en) 1998-05-29 2003-07-22 Morsø Jernstøberi A/S Stove for solid fuel
EP1118816A3 (fr) * 2000-01-21 2003-12-03 Spiess Ofentechnik AG Poêle et dispositif pour ameliorer des caractéristiques de combustion d'une telle poêle
WO2004072553A1 (fr) * 2003-02-14 2004-08-26 Fpi Fireplace Products International Ltd. Systeme et procede de regulation de tirage pour systemes de chauffage
US7373937B2 (en) 2003-02-14 2008-05-20 Fpi Fireplace Products International Ltd. Draft control system and method for heating systems
EP2085694A3 (fr) * 2008-01-30 2013-05-15 Hwam A/S Poêle à bois commandé électroniquement
DE102008057697A1 (de) 2008-11-17 2010-05-20 Uwe Kannengiesser Vorrichtung und Verfahren zum Umrüsten von Holzöfen auf elektronisch geregelten Abbrand
EP2208938A3 (fr) * 2009-01-15 2015-03-04 Spartherm Feuerungstechnik GmbH Dispositif de combustion de combustibles solides
US9803870B2 (en) 2011-11-07 2017-10-31 Ihs Innovation Aps Method for burning a fuel in a wood stove, a wood stove with a controller; and an air regulator for a wood stove
US9945563B2 (en) 2011-12-20 2018-04-17 Rudy Cyris Very shallow heating apparatus with very high yield and a wide view

Also Published As

Publication number Publication date
AT398483B (de) 1994-12-27
EP0604388B1 (fr) 1998-03-25
DE59308306D1 (de) 1998-04-30
ATA254492A (de) 1994-04-15

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