DE4206377A1 - Control of air flow to blowpipes in forced-air oil or gas burner - using pressure sensors in exhaust and sondes for gas content coupled to computer controlling variable speed fan - Google Patents

Control of air flow to blowpipes in forced-air oil or gas burner - using pressure sensors in exhaust and sondes for gas content coupled to computer controlling variable speed fan

Info

Publication number
DE4206377A1
DE4206377A1 DE4206377A DE4206377A DE4206377A1 DE 4206377 A1 DE4206377 A1 DE 4206377A1 DE 4206377 A DE4206377 A DE 4206377A DE 4206377 A DE4206377 A DE 4206377A DE 4206377 A1 DE4206377 A1 DE 4206377A1
Authority
DE
Germany
Prior art keywords
air
variable speed
exhaust
blowpipes
sondes
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.)
Withdrawn
Application number
DE4206377A
Other languages
German (de)
Inventor
Des Erfinders Auf Nennung Verzicht
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.)
NEUMANN, SIEGMAR, 78355 HOHENFELS, DE
Original Assignee
NEUMANN SIEGMAR 91795 DOLLNSTEIN DE
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 NEUMANN SIEGMAR 91795 DOLLNSTEIN DE filed Critical NEUMANN SIEGMAR 91795 DOLLNSTEIN DE
Priority to DE4206377A priority Critical patent/DE4206377A1/en
Publication of DE4206377A1 publication Critical patent/DE4206377A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • 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
    • 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
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties

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)

Abstract

The air flow to blow pipes is controlled. In the exhaust gas path, there is a pressure and/or flow sensor to establish the pressure ratios and also a sonde for oxygen, carbon monoxide and carbon dioxide content. The measured properties are compared to theoretical values in a computer and the variable speed drive of the air intake fan is adjusted accordingly. ADVANTAGE - Flexible burner with optimal combustion maintained.

Description

Stand der TechnikState of the art

Gebläsebrenner für Öl oder Gas arbeiten mit einem Luftansaug­ ventilator ohne Drehzahlregelung. Die einzige Möglichkeit zur Regulierung der angesaugten Luftmenge besteht in der Möglich­ keit die Ansaugöffnung mehr oder weniger zu öffnen.Fan burners for oil or gas work with an air intake fan without speed control. The only way to It is possible to regulate the amount of air sucked in ability to open the intake opening more or less.

Kritik am Stand der TechnikCriticism of the state of the art

Diese o.a. Technik ist weder unter dem Gesichtspunkt "rationel­ le Energieausbeute" noch unter dem Gesichtspunkt "Reduzierung von Schadstoffausstoß" zeitgemäß, ja sogar äußerst schädlich.This o.a. Technology is neither rational from the point of view of " le energy yield "still from the point of view" reduction of pollutant emissions "contemporary, even extremely harmful.

Es ist Naturgesetz, daß sich sowohl die Zusammensetzung der Verbrennungsluft wie auch die atmosphärischen Luftverhältnisse ständig ändern. Herkömmliche Brenner können, bedingt durch ihre Konstruktion und statische Einstellung diesen Änderungen in keiner Weise Rechnung tragen.It is natural law that both the composition of the Combustion air as well as the atmospheric air conditions constantly changing. Conventional burners can, due to their Construction and static adjustment of these changes in take no account of it.

Das bedeutet, daß sie so grob eingestellt werden müssen, daß sie alle Luftveränderungen gleichermaßen (schlecht) bewältigen können und nicht "umkippen".This means that they have to be set so roughly that they deal with all air changes equally (badly) can and not "tip over".

Dies geschieht dadurch, daß die angesaugte Luftmenge wesentlich größer gewählt wird als für den Verbrennungsvorgang chemisch erforderlich.This happens because the amount of air sucked in significantly is chosen larger than for the combustion process chemically required.

Dieser Luftüberschuß, es treten in der Praxis Überschußmengen bis 100% auf, führt zu Energieverschwendung und erhöhter Umweltbelastung in gleicher Größenordnung.This excess air, excess quantities occur in practice up to 100%, leads to wasted energy and increased Environmental pollution of the same order of magnitude.

Das Problem/Die AufgabenstellungThe problem / the task

Liegt darin diese Doppelbelastung auf das absolute Minimum zu reduzieren, im Idealfall den Luftbedarf genau so auszusteuern, daß einerseits eine optimale Verbrennung gewährleistet ist, andererseits der Brenner nicht wegen veränderter Luftdruckwerte umkippt. If this is the case, this double burden is to the absolute minimum reduce, ideally to control the air requirement in exactly the same way, that on the one hand optimal combustion is guaranteed, on the other hand the burner is not due to changes in air pressure values knock over.  

Lösung des Problems/Beschreibung der ErfindungSolution to the problem / description of the invention

Die Erfindung löst diese Probleme, indem sie zwei variable Parameter, Luftdruck und Luftzusammensetzung, so kombiniert, daß für den chemischen Verbrennungsvorgang annähernd konstan­ te optimale Betriebsbedingungen herrschen.The invention solves these problems by making two variables Parameters, air pressure and air composition, so combined, that almost constant for the chemical combustion process optimal operating conditions.

  • a) Beim Heizungsbetrieb gibt es zwei relevante Gasdrucksysteme die an einem Punkt aufeinandertreffen, sich ergänzen oder eben gegeneinander arbeiten. Dieser Treffpunkt liegt im Regelfall an der Eintrittsstelle der Rauchgase in den Schornstein.a) There are two relevant gas pressure systems in heating mode that meet at one point, complement each other or just work against each other. This meeting point is in Usually at the point of entry of the flue gases into the Chimney.

Die Lösung für dieses Teilproblem liegt darin, daß über einen Strömungswächter im Rauchgasweg dafür Sorge getragen wird, daß die Rauchgase einwandfrei durch den Schornstein in′s Freie befördert werden und über den Schornstein kein Gegendruck in den Verbrennungsraum hinein entsteht. Dieser Strömungswächter oder auch Druckwächter steuert einen Dreh­ zahlregler für den Luftansaugventilator des Brenners mit dem die Luftmenge variabel gestaltet wird. Somit arbeitet der Brenner unter annähernd konstanten Druckverhältnissen.The solution to this sub-problem is that about a flow switch in the flue gas path is that the flue gases pass through the chimney properly to be transported into the open and no over the chimney Back pressure arises into the combustion chamber. This Flow monitors or pressure monitors control a rotation number controller for the air intake fan of the burner where the amount of air is made variable. So it works the burner under approximately constant pressure conditions.

  • b) Das zweite Teilproblem, die schwankende Luftzusammenset­ zung, bedarf einer anderen Regulierung.b) The second sub-problem, the fluctuating air composition different regulation.

Dafür gibt es als Meßfaktoren im RauchgasThere are measuring factors for this in the flue gas

  • - den O2-Gehalt und/oder- The O 2 content and / or
  • - den CO-Gehalt und/oder- the CO content and / or
  • - den CO2-Gehalt.- The CO 2 content.

Je nach Brennstoff und dessen Zusammensetzung läßt sich der Sauerstoffbedarf für eine maximale zumindest optimale Verbrennung errechnen.Depending on the fuel and its composition, the oxygen requirement for a maximum at least optimal Calculate combustion.

An einem der o.a. Meßfaktoren läßt sich ablesen wie gut die Verbrennungsqualität tatsächlich ist. On one of the above Measuring factors can be read as well the quality of combustion is actually.  

Ein Meßfühler im Rauchgas registriert einen oder mehrere der o.a. Rauchgaskomponenten.A sensor in the flue gas registers one or more the above Flue gas components.

  • c) Da beide Teilprobleme u. U. verschiedene Luftmengen erfor­ dern, ist eine Recheneinheit notwendig die Kollisionen ver­ hindert.c) Since both sub-problems u. U. different amounts of air needed a computing unit is necessary to avoid the collisions prevents.

Beide Meßsysteme melden ihre Werte an diese Recheneinheit. Hier werden diese Werte mit vorgegebenen Sollwerten abge­ glichen und die Drehzahl des Luftansaugventilators, und damit die Luftmenge, entsprechend reguliert.Both measuring systems report their values to this computing unit. Here these values are given with specified target values equalized and the speed of the air intake fan, and thus regulating the air volume accordingly.

  • d) Eine zweite Variante zur Regulierung des Luft-Brennstoff- Gemischs ist denkbar bei der statt der Regulierung der Luftmenge eine Anpassung der Brennstoffmenge stattfindet. Diese Lösung hätte allerdings die Nachteile, daß die Brennerleistung variiert und daß diese Variante als Nach­ rüstung vorhandener Brenner nicht in Frage kommt, da alle Brenner dann ihre Zulassung verlören.d) A second variant for regulating the air-fuel Mixing is conceivable instead of regulating the Air quantity an adjustment of the fuel quantity takes place. However, this solution would have the disadvantages that the Burner output varies and that this variant as a night Armor existing burners is out of the question since all Brenner then lose their approval.
Erzielbare Vorteile der ErfindungAchievable advantages of the invention

  • 1. Der Brenner wird flexibel, er erhält konstante Betriebs­ bedingungen.1. The burner becomes flexible, it maintains constant operation conditions.
  • 2. Die Luftüberschußmenge wird auf ein unabdingbares Minimum reduziert, es wird keine überflüssige Luft erwärmt.2. The excess air quantity is kept to an absolute minimum reduced, no unnecessary air is heated.
  • 3. Die Energieeinsparung ist erheblich, sie liegt in der Größenordnung der eingesparten Luftüberschußmengen bei optimaler Energieausbeute, kann also 50% betragen.3. The energy saving is considerable, it lies in the Order of magnitude of the excess air saved optimal energy yield, can be 50%.
  • 4. Die Abgas- und Schadstoffmengen werden in gleicher Größen­ ordnung reduziert.4. The exhaust and pollutant quantities are of the same sizes order reduced.
  • 5. Das Abgas wird sauberer, indem Komponenten wie CO nahe Null liegen.5. The exhaust gas becomes cleaner by keeping components like CO close Zero.
  • 6. Vorhandene Brenner können nachgerüstet werden.6. Existing burners can be retrofitted.

Claims (7)

1. Vorrichtung zur Steuerung der Luftzufuhr bei Gebläsebrennern.1. Device for controlling the air supply in fan burners. 2. Vorrichtung nach Anspruch 1 gekennzeichnet dadurch, daß im Rauchgasweg ein Druck- und/ oder Strömungsfühler zur Messung der Druckverhältnisse ein­ gebaut wird.2. Device according to claim 1 characterized in that in the flue gas path a pressure and / or flow sensor for measuring the pressure conditions is built. 3. Vorrichtung nach Anspruch 1 gekennzeichnet dadurch, daß ferner im Rauchgasweg eine Meß­ sonde für O2 und/oder CO und/oder CO2 eingebaut wird.3. Apparatus according to claim 1, characterized in that a measuring probe for O 2 and / or CO and / or CO 2 is also installed in the flue gas path. 4. Vorrichtung nach Anspruch 1 gekennzeichnet dadurch, daß die Sonden/Fühler bei Brenner­ stillstand auf Betriebstemperatur gehalten werden.4. The device according to claim 1 characterized in that the probes / sensors at Brenner standstill at operating temperature. 5. Vorrichtung nach Anspruch 1 gekennzeichnet dadurch, daß die Meßwerte der Fühler/Sonden an eine elektronische Recheneinheit weitergeleitet werden, die diese mit vorprogrammierten Sollwerten abgleicht.5. The device according to claim 1 characterized in that the measured values of the sensors / probes be forwarded to an electronic computing unit, which compares these with pre-programmed setpoints. 6. Vorrichtung nach Anspruch 1 gekennzeichnet dadurch, daß der Luftansaugventilator des Brenners eine stufenlose Drehzahlregelung erhält.6. The device according to claim 1 characterized in that the air intake fan of the Brenners receives a stepless speed control. 7. Vorrichtung nach Anspruch 1 gekennzeichnet dadurch, daß die Recheneinheit auf Grund der Sollwerte die Drehzahlregelung steuert und damit die Luft­ menge optimal dimensioniert wird.7. The device according to claim 1 characterized in that the computing unit due to the Setpoints controls the speed control and thus the air quantity is optimally dimensioned.
DE4206377A 1992-02-29 1992-02-29 Control of air flow to blowpipes in forced-air oil or gas burner - using pressure sensors in exhaust and sondes for gas content coupled to computer controlling variable speed fan Withdrawn DE4206377A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4206377A DE4206377A1 (en) 1992-02-29 1992-02-29 Control of air flow to blowpipes in forced-air oil or gas burner - using pressure sensors in exhaust and sondes for gas content coupled to computer controlling variable speed fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4206377A DE4206377A1 (en) 1992-02-29 1992-02-29 Control of air flow to blowpipes in forced-air oil or gas burner - using pressure sensors in exhaust and sondes for gas content coupled to computer controlling variable speed fan

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DE4206377A1 true DE4206377A1 (en) 1993-09-02

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000050816A1 (en) * 1999-02-22 2000-08-31 Eta Exclusive Thermodynamic Application Ltd. Method for controlling the performance of an energy system
WO2003054446A2 (en) * 2001-12-19 2003-07-03 Conocophillips Company Method and apparatus for improving the efficiency of a combustion device
DE10310242A1 (en) * 2003-03-08 2004-09-23 Buderus Heiztechnik Gmbh Operating technique for oil or gas blowpipe, by regulating fan speed during a transition from the burner starting phase to the flame forming phase
DE102008047037B3 (en) * 2008-09-13 2009-11-26 Robert Bosch Gmbh Arrangement and method for monitoring a furnace
CN103032887A (en) * 2012-12-31 2013-04-10 河南省电力公司电力科学研究院 Method for realizing energy-saving running of coal burning boiler
US20150064632A1 (en) * 2012-03-29 2015-03-05 Pureteq A/S Fluid fuel burning device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3607386A1 (en) * 1986-01-28 1987-10-08 Landis & Gyr Ag METHOD AND DEVICE FOR GAS-AIR QUANTITY CONTROL FOR GAS BLOWING BURNERS
DE4117611A1 (en) * 1990-06-01 1991-12-05 Vaillant Joh Gmbh & Co Continuous monitoring equipment for variable air floor - controls electrical motor according to air demand signal and computed efficiency

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3607386A1 (en) * 1986-01-28 1987-10-08 Landis & Gyr Ag METHOD AND DEVICE FOR GAS-AIR QUANTITY CONTROL FOR GAS BLOWING BURNERS
DE4117611A1 (en) * 1990-06-01 1991-12-05 Vaillant Joh Gmbh & Co Continuous monitoring equipment for variable air floor - controls electrical motor according to air demand signal and computed efficiency

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000050816A1 (en) * 1999-02-22 2000-08-31 Eta Exclusive Thermodynamic Application Ltd. Method for controlling the performance of an energy system
WO2003054446A2 (en) * 2001-12-19 2003-07-03 Conocophillips Company Method and apparatus for improving the efficiency of a combustion device
US6745708B2 (en) * 2001-12-19 2004-06-08 Conocophillips Company Method and apparatus for improving the efficiency of a combustion device
WO2003054446A3 (en) * 2001-12-19 2009-06-11 Conocophillips Co Method and apparatus for improving the efficiency of a combustion device
DE10310242A1 (en) * 2003-03-08 2004-09-23 Buderus Heiztechnik Gmbh Operating technique for oil or gas blowpipe, by regulating fan speed during a transition from the burner starting phase to the flame forming phase
DE102008047037B3 (en) * 2008-09-13 2009-11-26 Robert Bosch Gmbh Arrangement and method for monitoring a furnace
US20150064632A1 (en) * 2012-03-29 2015-03-05 Pureteq A/S Fluid fuel burning device
CN103032887A (en) * 2012-12-31 2013-04-10 河南省电力公司电力科学研究院 Method for realizing energy-saving running of coal burning boiler
CN103032887B (en) * 2012-12-31 2015-02-04 河南省电力公司电力科学研究院 Method for realizing energy-saving running of coal burning boiler

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8122 Nonbinding interest in granting licences declared
8127 New person/name/address of the applicant

Owner name: NEUMANN, SIEGMAR, 78355 HOHENFELS, DE

8139 Disposal/non-payment of the annual fee