EP0981026A2 - Ionisationselektrode zur Überwachung des Verbrennungsprozesses eines Brenners, insbesondere eines Gasbrenners - Google Patents
Ionisationselektrode zur Überwachung des Verbrennungsprozesses eines Brenners, insbesondere eines Gasbrenners Download PDFInfo
- Publication number
- EP0981026A2 EP0981026A2 EP99115647A EP99115647A EP0981026A2 EP 0981026 A2 EP0981026 A2 EP 0981026A2 EP 99115647 A EP99115647 A EP 99115647A EP 99115647 A EP99115647 A EP 99115647A EP 0981026 A2 EP0981026 A2 EP 0981026A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ionization electrode
- burner
- distance
- ionization
- section
- 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- Withdrawn
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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
- F23N5/12—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
Definitions
- the present invention relates to an ionization electrode for monitoring and control the combustion process of a burner, in particular a gas burner, inside the combustion chamber.
- burners are understood as mixing and feeding devices for fuels and / or air for the controlled combustion of fuels, such as Oil, gas or coal dust.
- Ionization electrodes are used, which are arranged in the burner area of the burner and are exposed to the flames during the combustion process.
- free electrical charge carriers, ions and electrons arise, of which predominantly the electrons, due to their greater mobility, a directed charge transport, i.e. an electrical current, from the ionization electrode to one cause electrical mass.
- Electrical current and / or voltage is also a measure of the flame temperature and for the quality of the combustion.
- DE 44 33 425 A1 discloses how an ionization electrode can be used for regulation.
- an ionization electrode for reducing has different lengths depending on the burner load, which are alternately closer or further away from the burner surface, so that some Long sections exposed to high flames and some to low flames depending on the burner load.
- the ionization electrode is wavy, comb-shaped or helical.
- a disadvantage of this ionization electrode is that there is no constant uniform flame exposure.
- this electrode is complex to manufacture.
- the adjustment difficult without ensuring the desired load independence. In order to there is a load dependency of the ionization signal.
- the invention is based on the object of designing an ionization electrode for monitoring the combustion process of a burner in such a way that it delivers a load-independent and reliable ionization signal.
- the object is achieved in that at least a portion of the Ionization electrode protrudes into the burner area of the combustion chamber and the distance of the Section of the burner nozzles is adjustable.
- the ionization electrode Due to the adjustability of the distance of the protruding into the burner area and thus it is ensured that the section of the ionization electrode exposed to flame is that the ionization electrode is a load-independent and reliable ionization signal delivers, because the ionization electrode always the optimal distance to the burner surface can take. This optimal distance is during assembly, commissioning or set during maintenance and then remains during the operation of the Brenners fixed.
- the invention points into the burner area protruding portion of the ionization electrode on a reduced surface. So that is an optimal heat flow between the flame in the burner area protruding portion of the ionization electrode and another, not from the flames applied section of the ionization electrode and heat build-up inside the ionization electrode are avoided. This is an even higher reliability given the ionization signal.
- the surface ratio is advantageous of the portion of the ionization electrode protruding into the burner area a section of the ionization electrode lying outside the burner area 1: 2.
- the ionization electrode is rotatably mounted in a holder and the distance by turning the ionization electrode changeable. This creates an extremely simple way the distance of the section of the ionization electrode projecting into the burner area from the burner surface.
- the ionization electrode runs into the burner area protruding portion of the ionization electrode by a distance from the axis of rotation the ionization electrode. This allows the distance of the burner area protruding section of the ionization electrode from the burner surface particularly set effectively and precisely by turning the ionization electrode slightly.
- the distance to the center line is advantageously a result of an angling of the Ionization electrode formed.
- FIG. 1 shows a schematic side view of a burner with an ionization electrode according to the invention.
- the burner 1 shown in the figure has a plurality in the burner area 2 Burner nozzles 3, from which the flames emanate.
- an ionization electrode 4 is fastened, which for this purpose is rotatable in a holder 5 a wall 6 adjoining the burner 1 is mounted.
- the ionization electrode 4 has a rod-shaped section 7 and projecting into the burner area 2 a rod-shaped section 9 lying outside the burner area 2.
- the Sections 7, 9 are arranged in an extension and coaxially with each other. The one in the Burner region 2 projecting section 7 is during the combustion process of the flames 8 acted upon.
- Section 7 extends by a distance a from that shown in dash-dot lines in the figure Center line M of the ionization electrode 4 offset.
- the distance a results by an angling 4a of the ionization electrode 4 in the area outside the Section 9 of the burner area 2.
- the section 7 projecting into the burner area 2 is, as shown in the figure, to the Firing nozzles 3 spaced apart by a distance b.
- the distance b can be read through targeted rotation of the ionization electrode in the holder 5 continuously change, such as on the basis of the further positions of section 7 of the ionization electrode shown in broken lines 4 and the corresponding distances b 'and b' 'can be seen.
- the ionization electrode 4 By simply rotating the ionization electrode 4 in its holder 5 simple way always set the distance b so that the ionization electrode 4 ionization signal delivered when flame is applied regardless of load and is reliable.
- the turning takes place e.g. of an electric drive that can also be process-controlled.
- the optimal distance b is dependent on the Construction of the burner and its specific burning behavior during assembly, the Commissioning or set during maintenance. The distance changes during operation of the burner.
- the Combustion chamber 10 a boiler with service and / or heating water, which means the burner 1 is to be heated.
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)
- Control Of Combustion (AREA)
Abstract
Description
Claims (7)
- Ionisationselektrode zur Überwachung und Regelung des Verbrennungsprozesses eines Brenners insbesondere eines Gasbrenners, innerhalb der Brennkammer (10),
dadurch gekennzeichnet, daß wenigstens ein Abschnitt (7) der Ionisationselektrode (4) in den Brennerbereich (2) der Brennkammer (10) ragt und der Abstand (b, b', b'') des Abschnitts (7) von den Brennerdüsen (3) einstellbar ist. - Ionisationselektrode nach Anspruch 1,
dadurch gekennzeichnet, daß der in den Brennerbereich (2) ragende Abschnitt (7) der Ionisationselektrode (4) eine verringerte Oberfläche im Vergleich zu mindestens einem weiteren Abschnitt (9) der Ionisationselektrode (4) aufweist. - Ionisationselektrode nach Anspruch 2,
dadurch gekennzeichnet, daß das Oberflächenverhältnis des in den Brennerbereich (2) ragenden Abschnitts (7) der Ionisationselektrode (4) zu dem außerhalb des Brennerbereichs (2) liegenden Abschnitt (9) der Ionisationselektrode (4) 1 : 2 ist. - Ionisationselektrode nach Anspruch 2 oder Anspruch 3,
dadurch gekennzeichnet, daß die unterschiedlichen Oberflächen auf unterschiedlichen Querschnitten der beiden Abschnitte (7, 9) beruhen. - Ionisationselektrode nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, daß die Ionisationselektrode (4) drehbar in einer Halterung (5) gelagert ist und der Abstand (b, b', b'') durch Drehen der Ionisationselektrode (4) veränderbar ist. - Ionisationseiektrode nach einem oder mehreren der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß der in den Brennerbereich (2) ragende Abschnitt (7) der Ionisationselektrode (4) um einen Abstand (a) zu einer Mittellinie (M) der Ionisationselektrode (4) versetzt verläuft, die durch die Drehachse der Halterung (5) definiert ist. - Ionisationselektrode nach Anspruch 6,
dadurch gekennzeichnet, daß der Abstand (a) zu der Mittellinie durch eine Abwinkelung 4a) der Ionisationselektrode (4) ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19837328 | 1998-08-18 | ||
DE1998137328 DE19837328A1 (de) | 1998-08-18 | 1998-08-18 | Ionisationselektrode zur Überwachung des Verbrennungsprozesses eines Brenners, insbesondere eines Gasbrenners |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0981026A2 true EP0981026A2 (de) | 2000-02-23 |
EP0981026A3 EP0981026A3 (de) | 2003-01-02 |
Family
ID=7877838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99115647A Withdrawn EP0981026A3 (de) | 1998-08-18 | 1999-08-07 | Ionisationselektrode zur Überwachung des Verbrennungsprozesses eines Brenners, insbesondere eines Gasbrenners |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0981026A3 (de) |
DE (1) | DE19837328A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20100793A1 (it) * | 2010-05-05 | 2011-11-06 | Worgas Bruciatori Srl | Bruciatore premiscelato |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1218261A1 (ru) * | 1983-04-01 | 1986-03-15 | Институт газа АН УССР | Горелочное устройство |
DE4433425A1 (de) * | 1994-09-20 | 1996-03-21 | Stiebel Eltron Gmbh & Co Kg | Regeleinrichtung zum Einstellen eines Gas-Verbrennungsluft-Gemisches bei einem Gasbrenner |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19502900C2 (de) * | 1995-01-31 | 1997-12-18 | Stiebel Eltron Gmbh & Co Kg | Ionisationselektrode |
-
1998
- 1998-08-18 DE DE1998137328 patent/DE19837328A1/de not_active Ceased
-
1999
- 1999-08-07 EP EP99115647A patent/EP0981026A3/de not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1218261A1 (ru) * | 1983-04-01 | 1986-03-15 | Институт газа АН УССР | Горелочное устройство |
DE4433425A1 (de) * | 1994-09-20 | 1996-03-21 | Stiebel Eltron Gmbh & Co Kg | Regeleinrichtung zum Einstellen eines Gas-Verbrennungsluft-Gemisches bei einem Gasbrenner |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20100793A1 (it) * | 2010-05-05 | 2011-11-06 | Worgas Bruciatori Srl | Bruciatore premiscelato |
EP2385300A1 (de) * | 2010-05-05 | 2011-11-09 | WORGAS BRUCIATORI S.r.l. | Vormischbrenner |
Also Published As
Publication number | Publication date |
---|---|
DE19837328A1 (de) | 2000-02-24 |
EP0981026A3 (de) | 2003-01-02 |
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