DE7531722U - FLAME SENSOR WITH SELECTIVE SPECTRAL SENSITIVITY - Google Patents

FLAME SENSOR WITH SELECTIVE SPECTRAL SENSITIVITY

Info

Publication number
DE7531722U
DE7531722U DE7531722U DE7531722U DE7531722U DE 7531722 U DE7531722 U DE 7531722U DE 7531722 U DE7531722 U DE 7531722U DE 7531722 U DE7531722 U DE 7531722U DE 7531722 U DE7531722 U DE 7531722U
Authority
DE
Germany
Prior art keywords
flame
flame sensor
lens
light
long
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.)
Expired
Application number
DE7531722U
Other languages
German (de)
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.)
Siemens Building Technologies AG
Original Assignee
LGZ Landis and Gyr Zug AG
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 LGZ Landis and Gyr Zug AG filed Critical LGZ Landis and Gyr Zug AG
Publication of DE7531722U publication Critical patent/DE7531722U/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0014Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0014Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
    • G01J5/0018Flames, plasma or welding
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • G01J5/08Optical arrangements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • G01J5/08Optical arrangements
    • G01J5/0801Means for wavelength selection or discrimination
    • G01J5/0802Optical filters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • G01J5/08Optical arrangements
    • G01J5/0806Focusing or collimating elements, e.g. lenses or concave mirrors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02Constructional details
    • G01J5/04Casings
    • G01J5/046Materials; Selection of thermal materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Description

Flammenfühler mit selektiver Spelctralerapf indliolikeitFlame sensor with selective Spelctralerapf indliolikeit

Die Feuerung "bezieht sich auf einen sur Überwachung einer Flamme "bei Gas- und Gibrennern dienenden Flammenfühler mit einem Gehäuse, in dem ein zum lichtverstärken und Fernhalten unerwünschter Strahlungsanteile dienendes optisches System und ein lichtempfindliches Element in Richtung des Lichteinfalles von der Flamme hintereinander angeordnet sind.The firing "refers to a sur surveillance a flame "with gas and gib burners serving flame sensors with a housing in which a light amplification and keeping away unwanted radiation components serving optical system and a photosensitive Element are arranged one behind the other in the direction of incidence of light from the flame.

Für die Überwachung von Öl- und Gasflammen sin^ Flaiamenfühler erwünscht, welche nur auf die direkt vcti der Fl&nme ausgehende Strahlung ansprechen, das heißt, auf deren blauen oder nahe gegen ultraviolett liegenden Strahlenanteil, während im Rot und Infrarot liegende Strahlung, die vor allem von glühenden Schamottewänden herrührt, nicht erfaßt v/erden soll.For the monitoring of oil and gas flames, there are fluff sensors desirable, which respond only to the radiation emanating directly from the flames, that is to say to their blue or near-ultraviolet rays, while those in the red and infrared Radiation, which originates mainly from glowing firebrick walls, should not be detected.

I.'ach der CH-PS 40n· 211 ist iur Verwendung bei einem FlaajEenfühler sin optisches oystets in VerbindungAccording to CH-PS 40 n 211, optical sensors are used in conjunction with a flaaj sensor

7531722 15.04.767531722 04/15/76

mit einer justierbaren A'ierschichtdiode bekannt, welches mit einem Absorptionsfilter und/oder einer Lochblende den langwelligen, unerwünschten Strahlungsanteil von der Vierschichtdiode unter gleichzeitiger Verstärkung des gewünschten Lichtanteiles fernhält.known with an adjustable layer diode, which with an absorption filter and / or a perforated diaphragm removes the long-wave, undesired radiation component from the four-layer diode while at the same time Keeps away the amplification of the desired amount of light.

Der !Teuerung liegt die Aufgabe zugrunde, den Elammenfühler mit einfacheren Mitteln zu verbessern*The price increase is based on the task of the Elam sensor to improve with simpler means *

Die Neuerung besteht darin, daß das optische System eine Eresnel-Linse aufweiste.The innovation is that the optical system has an Eresnel lens.

Zur Erzielung einer PiIterwirlaing besteht die Fresnel-Linse aus einem Kunststoff, der unerwünschte langwellige Strahlungsanteile absorbiert bzw. in den optische Filterstoffe eingebettet sind. Außerdem ist es vorteilhaft, die S1Tesne!-Linse - zweckmäßig zusätzlich - mit einer Oberflächenschicht zu versehen, welche die langwelligen Strahlungsanteile reflektiert.In order to achieve a piIterwirlaing, the Fresnel lens consists of a plastic that absorbs unwanted long-wave radiation components or in which optical filter materials are embedded. In addition, it is advantageous to provide the S 1 Tesne! Lens - expediently in addition - with a surface layer which reflects the long-wave radiation components.

Durch Verwendung einer Fresnel-Linse, welche durch Presse■: oder Spritzen aus einem lichtdurchlässigen Kunststoff, insb. Polyester, ohne großen Aufwand hergestellt werden ks^r, err""t sich ein sehr wirtschaftliches optisches "ystem für einen Flamise η fühler-,By using a Fresnel lens, which by pressing ■: or spraying from a translucent Plastic, especially polyester, can be produced without great effort optical "system for a Flamise η sensor,

~~.±\~. 3eispiel v;ird anhand der Zeichnung nachfolgend erläutert. ~~. ± \ ~. Example 3 is explained below with reference to the drawing.

Ia .'-/Dstasc -on einer JPlaniae 1 befindet sich der rlaminerifüiiler mit den: Gehäuse 6? das teilweise aufgebrochen ist und ein lichtempfindliches Element 2Ia .'- / Dstasc -on a JPlaniae 1 is the rlaminerifüiiler with the: Housing 6 ? which is partially broken and a photosensitive element 2

7531722 1SLK7I7531722 1SLK7I

sowie eitie zwischen diesem und der Flamme 1 eine im Schnitt dargestellte Fresnellinse 3 als optisches System aufweist.as well as between this and the flame 1 an im Fresnel lens 3 shown in section as an optical one System.

Fresnel-Linsen als solche sind bekannt. Sie bestehen aus zentrisch angeordneten, lichtbrechenden Strukturen, die als schmale Kreisringe 4 ausgebildet sind. Es sind damit optische Systeme mit sehr kleiner Brennweite bei großem Öffnungsverhältnis herstellbar, v/eil ^e(LeT Kreis-ring 4 entsprechend seinem Abstand vom konvexen Zentrum 5 individuell optisch korrigiert werden kann. Dadurch ergibt sich eine hohe lichtverstärkung bei kleiner Baulänge der !"ühleranOrdnung.Fresnel lenses as such are known. They consist of centrally arranged, refractive structures that are designed as narrow circular rings 4. Optical systems with a very small focal length and a large aperture ratio can thus be produced, v / eil ^ e (LeT circular ring 4 can be optically corrected individually according to its distance from the convex center 5. This results in a high light amplification with a small overall length! " sensor arrangement.

Das lichtempfindliche Element 2 ist z.B. an der Rückwand des Gehäuses 6 befestigt, durch die elektrische Leitungen 7 nach außen führen. Die Stesnel-Linse 5 ist hinter der lichtdurchlässigen Abdeckung 8 im Strahlengang im Gehäuse6 befestigt.The photosensitive element 2 is attached to, for example, the rear wall of the housing 6 by the electrical Lead lines 7 to the outside. The Stesnel lens 5 is attached behind the transparent cover 8 in the beam path in the housing 6.

- Schutzansprüche - - Protection claims -

7S31722 15.M.7I7S31722 15.M.7I

Claims (4)

HJM/StHJM / St SchutzansprücheProtection claims 1 *) Zur Überwachung einer Flamme bei Gas- oder Ölbrennern dienender Flammenfühler mit einem Ge1 *) For monitoring a flame in gas or oil burners serving flame sensor with a Ge häuse, in dem ein zum Lichtverstärken und Fernhalten unerwünschter Strahlungsanteile dienendes optisches System und ein lichtempfindlichea Element in Richtung des Lichteinfalles von der Flamme hintereinander angeordnet sind, dadurch gekenn^ichnet, daß das optische System eine Prestel-Linse (3) aufweist.housing in which a light amplifying and keeping away unwanted radiation components is used optical system and a light-sensitive element in the direction of incidence of light from the Flame are arranged one behind the other, thereby known that the optical system is a Has Prestel lens (3). 2.) Flammeηfühler nach Anspruch 1, dadurch gekenn-53eich.net, daß die Fresnel-Linse (3) aus ginem Kunststoff besteht, der langwellige Strahlung absorbiert«2.) Flammeηsensor according to claim 1, characterized gekenn-53eich.net, that the Fresnel lens (3) consists of ginem plastic, the long-wave radiation absorbed " 3.) Flammenfühler nach. Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Fresnel-Linse (3) aus Kunststoff mit eingebetteten optischen Filterstoffen besteht.3.) Flame sensor after. Claim 1 or 2, characterized in that the Fresnel lens (3) from Plastic with embedded optical filter materials is made. 4.) Flammenfühler nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Presne!-Linse (3) eir.e die langwelligen Jtrahlungsanteile reflektierende OberfIacΙιθώschicht aufweist.4.) Flame sensor according to one of the preceding claims, characterized in that the Presne! Lens (3) eir.e the long-wave radiation components reflective surface layer having.
DE7531722U 1974-10-17 1975-10-06 FLAME SENSOR WITH SELECTIVE SPECTRAL SENSITIVITY Expired DE7531722U (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1391274A CH577145A5 (en) 1974-10-17 1974-10-17 Flame sensor for gas and oil burners - has fresnel lens filter or reflector for eliminating glow interference

Publications (1)

Publication Number Publication Date
DE7531722U true DE7531722U (en) 1976-04-15

Family

ID=4396412

Family Applications (1)

Application Number Title Priority Date Filing Date
DE7531722U Expired DE7531722U (en) 1974-10-17 1975-10-06 FLAME SENSOR WITH SELECTIVE SPECTRAL SENSITIVITY

Country Status (2)

Country Link
CH (1) CH577145A5 (en)
DE (1) DE7531722U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH680390A5 (en) * 1990-05-18 1992-08-14 Landis & Gyr Betriebs Ag
CN110836864B (en) * 2019-10-29 2021-01-01 中国人民解放军战略支援部队航天工程大学 An optical measuring device for measuring gas parameters in combustion field

Also Published As

Publication number Publication date
CH577145A5 (en) 1976-06-30

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