DE7531722U - FLAME SENSOR WITH SELECTIVE SPECTRAL SENSITIVITY - Google Patents
FLAME SENSOR WITH SELECTIVE SPECTRAL SENSITIVITYInfo
- 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
Links
- 230000035945 sensitivity Effects 0.000 title 1
- 230000003595 spectral effect Effects 0.000 title 1
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0014—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation from gases, flames
- G01J5/0018—Flames, plasma or welding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0801—Means for wavelength selection or discrimination
- G01J5/0802—Optical filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0806—Focusing or collimating elements, e.g. lenses or concave mirrors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
- G01J5/046—Materials; 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)
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)
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 |
-
1974
- 1974-10-17 CH CH1391274A patent/CH577145A5/en not_active IP Right Cessation
-
1975
- 1975-10-06 DE DE7531722U patent/DE7531722U/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH577145A5 (en) | 1976-06-30 |
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