EP3372898A3 - Flame monitoring arrangement for a fuel-fired heater - Google Patents

Flame monitoring arrangement for a fuel-fired heater Download PDF

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Publication number
EP3372898A3
EP3372898A3 EP18152420.8A EP18152420A EP3372898A3 EP 3372898 A3 EP3372898 A3 EP 3372898A3 EP 18152420 A EP18152420 A EP 18152420A EP 3372898 A3 EP3372898 A3 EP 3372898A3
Authority
EP
European Patent Office
Prior art keywords
flame
combustion chamber
photoelectric sensor
passage opening
light passage
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Withdrawn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
EP18152420.8A
Other languages
German (de)
French (fr)
Other versions
EP3372898A2 (en
Inventor
Stefan Koch
Nico Soppa
Hans-Michael Wardenga
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.)
Valeo Thermal Commercial Vehicles Germany GmbH
Original Assignee
Valeo Thermal Commercial Vehicles Germany GmbH
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
Priority claimed from DE202017101404.5U external-priority patent/DE202017101404U1/en
Application filed by Valeo Thermal Commercial Vehicles Germany GmbH filed Critical Valeo Thermal Commercial Vehicles Germany GmbH
Publication of EP3372898A2 publication Critical patent/EP3372898A2/en
Publication of EP3372898A3 publication Critical patent/EP3372898A3/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Withdrawn legal-status Critical Current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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/18—Flame sensor cooling means

Abstract

Eine Flammen-Überwachungsanordnung für eine in der Brennkammer eines mit Brennstoff arbeitenden Heizgerätes (1') brennende Flamme (12) umfasst einen außerhalb der Brennkammer im Abstand von dieser angeordneten fotoelektrischen Sensor (20), auf den von der brennenden Flamme (12) abgegebenes, durch eine in einer Wand (31) der Brennkammer vorgesehene Lichtdurchtrittsöffnung (33) hindurchtretendes Licht fällt und der ein elektrisches Steuersignal abgibt, das es ermöglicht, das Vorhandensein oder Nichtvorhandensein einer Flamme zu erkennen. Zur Verbesserung der Erkennbarkeit der Flamme und zur Verminderung der Verschmutzungsgefahr ist vorgesehen, dass der Abstand zwischen dem fotoelektrischen Sensor (20) und der Lichtdurchtrittsöffnung durch einen Hohlkörper (36) überbrückt ist, der eine staubgeschützte Verbindung zwischen dem fotoelektrischen Sensor (20) und der Lichtdurchtrittsöffnung (33) in der Wand (31) der Brennkammer derart bildet, dass durch seinen Innenraum das aus der Lichtdurchtrittsöffnung (33) austretende Licht zu dem fotoelektrischen Sensor (20) gelangen kann.

Figure imgaf001
A flame monitoring arrangement for a flame (12) burning in the combustion chamber of a fuel-fired heater (1 ') comprises a photoelectric sensor (20) located outside the combustion chamber at a distance therefrom, onto which is emitted from the burning flame (12); light passing through a light passage opening (33) provided in a wall (31) of the combustion chamber and emitting an electrical control signal enabling the presence or absence of a flame to be detected. To improve the visibility of the flame and to reduce the risk of contamination is provided that the distance between the photoelectric sensor (20) and the light passage opening by a hollow body (36) is bridged, the dust-protected connection between the photoelectric sensor (20) and the light passage opening (33) in the wall (31) of the combustion chamber forms such that through its interior, the light emerging from the light passage opening (33) can reach the photoelectric sensor (20).
Figure imgaf001
EP18152420.8A 2017-03-10 2018-01-18 Flame monitoring arrangement for a fuel-fired heater Withdrawn EP3372898A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017101404.5U DE202017101404U1 (en) 2017-03-10 2017-03-10 Flame monitoring arrangement for a fuel heater
DE102017107592.5A DE102017107592A1 (en) 2017-03-10 2017-04-07 Flame monitoring arrangement for a fuel heater

Publications (2)

Publication Number Publication Date
EP3372898A2 EP3372898A2 (en) 2018-09-12
EP3372898A3 true EP3372898A3 (en) 2018-11-21

Family

ID=61017803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18152420.8A Withdrawn EP3372898A3 (en) 2017-03-10 2018-01-18 Flame monitoring arrangement for a fuel-fired heater

Country Status (1)

Country Link
EP (1) EP3372898A3 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615596A1 (en) * 1987-05-18 1988-11-25 Alsace Gaz Ind Sa Monitoring device for a flame localised in an enclosure
US5120975A (en) * 1990-03-23 1992-06-09 General Electric Company Gas turbine flame detection system with reflected flame radiation attenuator
DE102010063524A1 (en) * 2010-12-20 2012-06-21 Bodo Wyrwa Adjustable burner for combustion of heating oil at oil heating system for building, has injector openings manually or electronically controllable, continuously releasable or closable by annular control element with slot like openings
US20130318994A1 (en) * 2012-06-05 2013-12-05 General Electric Company Ultra-violet flame detector with high temperature remote sensing element
DE202017101404U1 (en) * 2017-03-10 2017-05-04 Spheros Gmbh Flame monitoring arrangement for a fuel heater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2615596A1 (en) * 1987-05-18 1988-11-25 Alsace Gaz Ind Sa Monitoring device for a flame localised in an enclosure
US5120975A (en) * 1990-03-23 1992-06-09 General Electric Company Gas turbine flame detection system with reflected flame radiation attenuator
DE102010063524A1 (en) * 2010-12-20 2012-06-21 Bodo Wyrwa Adjustable burner for combustion of heating oil at oil heating system for building, has injector openings manually or electronically controllable, continuously releasable or closable by annular control element with slot like openings
US20130318994A1 (en) * 2012-06-05 2013-12-05 General Electric Company Ultra-violet flame detector with high temperature remote sensing element
DE202017101404U1 (en) * 2017-03-10 2017-05-04 Spheros Gmbh Flame monitoring arrangement for a fuel heater

Also Published As

Publication number Publication date
EP3372898A2 (en) 2018-09-12

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