EP4522915A1 - Verfahren zum betrieb einer brennereinrichtung - Google Patents
Verfahren zum betrieb einer brennereinrichtungInfo
- Publication number
- EP4522915A1 EP4522915A1 EP23731514.8A EP23731514A EP4522915A1 EP 4522915 A1 EP4522915 A1 EP 4522915A1 EP 23731514 A EP23731514 A EP 23731514A EP 4522915 A1 EP4522915 A1 EP 4522915A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ignition
- voltage
- flame
- ignition transformer
- monitoring
- 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.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- 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
- F23N5/123—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 using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
- F23Q3/008—Structurally associated with fluid-fuel burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/02—Starting or ignition cycles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/28—Ignition circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/34—Continuously applied ignition cycles
-
- 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
- F23N2229/00—Flame sensors
- F23N2229/12—Flame sensors with flame rectification current detecting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/12—Fail safe for ignition failures
Definitions
- the invention relates to a method for operating a burner device according to the preamble f of patent claim 1.
- a device for carrying out a method of the type mentioned at the beginning is known from the patent document DE 10 2020 107 735 A1 (also registered by the applicant). 10
- an ignition voltage is generated using an ignition transformer. This is measured at the ignition transformer and transferred to an ignition electrode to ignite a flame.
- this solution uses a so-called ionization electrode, which is not explicitly described in the document but is known to the applicant. H .
- This solution has an ignition electrode on the one hand and an ionization electrode on the other.
- the invention is based on the object of improving a method of the type mentioned at the beginning.
- a method should be created in which the existing ignition transformer and the existing ignition electrode are used even better.
- a monitoring voltage which is below the ignition voltage is generated and this is sent to the as Monitoring electrode working ignition electrode is transferred and measured for flame monitoring on the ignition transformer.
- the method according to the invention is characterized in that the ignition electrode is used not only to ignite the burner device, but also to monitor the ignited flame.
- Figure 1 is a circuit diagram showing the method according to the invention. 20
- FIG. 1 illustrates a possible implementation of the method according to the invention.
- an ignition voltage is first generated in a manner known per se using an ignition transformer 1. This is then also measured at the ignition transformer 1 (arrow 15) and transmitted to an ignition electrode 2 to ignite a flame (see arrow 11).
- the ignition electrode 2 is optionally operated with a voltage between 0.8 and 25 kV and/or is formed from two electrode wires (known per se, not shown separately).
- the ignition of the Flame is carried out at a constant air volume flow to the burner device.
- the ignition transformer 1 is equipped with a pulse width modulation generator
- the pulse width modulation generator 3 itself is preferably operated with alternating voltage (arrow 18). Furthermore, it is preferably provided that the pulse width modulation generator 3 is controlled with a control device 4 (see arrows 13 and 14). 20
- Control device 4 is directed.
- control device 4 generates a flame monitoring signal (see arrow 17) from the pulse width modulation generator 3 based on measurement signals from the ignition transformer 1 and 5. This is preferably provided by the control device 4 in the form of an electrical voltage between 0 and 10 V.
- a gas containing at least a portion of hydrogen is burned with the burner device.
- the burner device produces a gas with at least 20 vol. -% hydrogen f is burned.
- the burner is started by simply initially supplying a constant air volume flow to the combustion system.
- the ignition is then switched on, causing high-voltage discharges above the minimum ignition energy of the fuel gas-air mixture to form between the electrodes (wires).
- the resulting plasma of ionized air reaches the maximum breakdown voltage, which is coupled out on the primary side of the ignition transformer 1 in the form of a voltage signal. If "safe" ignition is guaranteed, the gas valve is opened and the gas control valve is moved according to the characteristic curve (so-called gas ramp).
- thermochemical, predominantly exothermic reactions immediately begin, which lead to self-sustaining flame propagation within the ignition limits of the respective fuel gas-air mixture after the ignition delay time has elapsed.
- the conductivity of the flame leads to a drop in the breakdown voltage, 5 which in turn is used by the voltage signal coupled out on the primary side for flame detection with a corresponding stop of the gas ramp of the gas control valve.
- the voltage from the ignition transformer is regulated below the breakdown voltage, in particular by pulse width modulation, so that in the event of a flame loss or flame displacement, no ignition spark occurs between the electrodes (the minimum ignition energy is not reached).
- the electrical conductivity of the flame can be measured by applying the alternating voltage.
- the proportion of hydrocarbons in the fuel gas-air mixture is directly correlated with the rectification effect of the alternating electrical voltage, so that flame monitoring via ionization current is also possible.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022111803 | 2022-05-11 | ||
| PCT/DE2023/150010 WO2023217328A1 (de) | 2022-05-11 | 2023-05-05 | Verfahren zum betrieb einer brennereinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4522915A1 true EP4522915A1 (de) | 2025-03-19 |
Family
ID=86851642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23731514.8A Pending EP4522915A1 (de) | 2022-05-11 | 2023-05-05 | Verfahren zum betrieb einer brennereinrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4522915A1 (de) |
| DE (1) | DE102023112183A1 (de) |
| WO (1) | WO2023217328A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007018122B4 (de) * | 2007-04-16 | 2013-10-17 | Viessmann Werke Gmbh & Co Kg | Flammenüberwachungsvorrichtung mit einer Spannungserzeugungs- und Messanordnung und Verfahren zum Überwachen eines Brenners mittels der Flammenüberwachungsvorrichtung |
| DE102010001307B4 (de) * | 2010-01-28 | 2013-12-24 | Viessmann Werke Gmbh & Co Kg | Verfahren und Vorrichtung zur auf Ionisationsstrommessung basierenden Flammenerkennung sowie Flammenüberwachungssystem |
| WO2015017018A1 (en) * | 2013-08-01 | 2015-02-05 | Carrier Commercial Refrigeration, Inc | Flame sense assembly with ground screen |
| DE102020107735A1 (de) | 2020-03-20 | 2021-09-23 | Viessmann Werke Gmbh & Co Kg | Verfahren zum Betrieb einer Brennereinrichtung |
-
2023
- 2023-05-05 EP EP23731514.8A patent/EP4522915A1/de active Pending
- 2023-05-05 WO PCT/DE2023/150010 patent/WO2023217328A1/de not_active Ceased
- 2023-05-09 DE DE102023112183.9A patent/DE102023112183A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023217328A1 (de) | 2023-11-16 |
| DE102023112183A1 (de) | 2023-11-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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| 17P | Request for examination filed |
Effective date: 20241129 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VIESSMANN HOLDING INTERNATIONAL GMBH |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17Q | First examination report despatched |
Effective date: 20251110 |