This is a Provisional Application for a Patent.

United States Provisional Application for a Patent

Flame Sensing System

Application Number 62,005,199

Filed 5/30/2014

Jed Margolin

 

 

ABSTRACT OF THE DISCLOSURE

This invention relates to the field of sensing flames in equipment such as gas furnaces by using the electrical properties of flames. In a first group of embodiments flame rectification is used to cause distortion of a signal having a selected waveform. A harmonic of the distorted waveform is detected thereby providing flame proof. In a second group of embodiments flame rectification is used as a mixer to cause two signals having selected waveforms to produce sum and difference signals. The sum and/or difference signals are detected thereby providing flame proof.

 

 

 

 

References


The listed links are the original links. In some cases they may be broken. The PDF version was made from the original link.

 

Ref. 1:    U.S. Patent 1,688,126 Method of and Apparatus for Control of Liquid Fuel Burners issued Oct 16, 1928 to R.F. Metcalfe, assigned to Socony Burner Corporation

(Metcalfe Figure 1 Contacts 7 and 8; Page 3, right column, lines 70 – 79)

 

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Ref. 2:    U.S. Patent 2,112,736 Flame Detector issued March 29, 1938 to William D. Cockrell, assigned to General Electric (Page 1, left column, line 41 – Page 2, right column, line 15)

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Ref. 3:   U.S. Patent 2,136,256 Furnace Control System issued Nov 8, 1938 to A.L Sweet, assigned to General Electric Company (age 1, left column, line 4 – Page 2, left column line 2)

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Ref. 4:   U.S. Patent 3,301,307 Device for detecting the configuration of a burning flame issued Jan 31, 1967 to Kazuo Kobayashi, et al, assigned to Ngk Insulators Ltd (Column 2, lines 3 -15)

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Ref. 5:   U.S. Patent 4,082,493 Gas Burner Control System issued April 4, 1978 to Dahlgren, assigned to Cam-Stat, Incorporated (Dahlgren Figure 2 and Column 3, lines 32 – 42; Table at Column 3, lines 20-30)

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Ref. 6:   U.S. Patent 8,310,801 Flame sensing voltage dependent on application issued November 13, 2012 to McDonald, et al., assigned to Honeywell (Column 2, lines 10 – 44)

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Ref. 7:   U.S. Patent 6,404,342 Flame detector using filtering of ultraviolet radiation flicker issued June 11, 2002 to Planer, et al. and assigned to Honeywell (Column 1, lines 21 – 32)

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Ref. 8:    Prediction and Measurement of Electron Density and Collision Frequency in a Weakly Ionised Pine Fire by Mphale, Mohan, and Heron; Int J Infrared Milli Waves (2007) 28:251–262; DOI 10.1007/s10762-007-9199-7;    http://eprints.jcu.edu.au/2655/1/17300_Mphale_et_al_2007.pdf

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Ref. 9:   Conduction of Electricity Through Gases by J. J. Thomson; Cambridge University Press; 1903,1906; Chapter IX Ionization in Gases from Flames; page 228, PDF page 8;

http://trove.nla.gov.au/goto?i=book&w=808233&d=http%3A%2F%2Fopenlibrary.org%2Fbooks%2FOL7102511M

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Ref. 10:    About Plasmas from the Coalition For Plasma Science; Plasma and Flames – The Burning Question;  http://www.plasmacoalition.org/plasma_writeups/flame.pdf

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Ref. 11:   Plasma Fundamentals and Applications; by Dr. I.J. Van der Walt, Senior Scientist, Necsa contains a chart

(PDF page 8)

http://www.nstf.org.za/ShowProperty?nodePath=/NSTF%20Repository/NSTF/files/ScienceCouncils/2012/PlasmaFundamentals.pdf

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Ref. 12:   Introduction to Combustion; by Stephen R. Turns, McGraw Hill Education (India); Page 108, PDF page 3; page 159, bottom of PDF page 5.

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Ref. 13:  Burning Sulfur Compounds; Banks Engineering – Tulsa;

http://www.banksengineering.com/Burning%20Sulfur%20Compounds.pdf

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Ref. 14:   Alkali metal halide, Wikipedia January 19, 2014; http://en.wikipedia.org/wiki/Alkali_metal_halide

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Ref. 15:  Alkali Metal, Wikipedia January 19, 2014; http://en.wikipedia.org/wiki/Alkali_metal

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Ref. 16:    U.S. Patent 4,317,487 Method of recovering oil and other hydrocarbon values from subterranean formations issued March 2, 1982 to Merkl, and assigned to Molecular Energy Research Company, Inc.

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Ref. 17:   Grades of Propane - Gas Purity and Quality

http://www.propane101.com/propanegradesandquality.htm

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Ref. 18:   The Truth About Propane

http://www.thriftypropane.com/truthaboutpropane.aspx

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Ref. 19:  U.S. Patent 307,031 Electrical indicator issued October 21, 1884 to T. A. Edison.

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Ref. 20:  U.S. Patent 803,684 Instrument for converting alternating electric currents into continuous current issued November 7, 1905 to J.A. Fleming, assigned to Marconi Wireless Telegraph Company Of America.

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Ref. 21:  Definition of “Electrolyte” retrieved from Wikipedia 1/31/2014;

http://en.wikipedia.org/wiki/Electrolyte

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Ref. 22:  Dissertation Counter Electromotive Force in the Aluminum Rectifier; Albert Lewis Fitch,  Press of the New Era Printing Co.; Lancaster, Pa; 1917; Pages 15-17).

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Ref. 23:  U.S. Patent 1,077,628 Electrolytic condenser issued November 4, 1913 to Mershon {Ref. 27} Page 1, lines 40-50

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Ref. 24:   General Descriptions of Aluminum Electrolytic Capacitors, 1-1 Principles of Aluminum Electrolytic Capacitors’ Nichicon; Page 1. http://www.nichicon.co.jp/english/products/pdf/aluminum.pdf

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Ref. 25:  Batteries and electrochemical capacitors; Héctor D. Abruña, Yasukuki Kiya, and Jay C. Henderson; Physics Today December 2008, page 43-47  https://ecee.colorado.edu/~ecen4555/SourceMaterial/ElectricalEnerStor1208.pdf.

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Ref. 26:    Electroplating; from Wikipedia, retrieved 2/1/2014.  http://en.wikipedia.org/wiki/Electroplating

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Ref. 27:  U.S. Patent 3,956,080 Coated valve metal article formed by spark anodizing issued May 11, 1976 to 

Hradcovsky, et al.;  Column 2 lines 10 – 48.

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Ref. 28:  The front pages of the datasheets for the 5U4GB, 5Y3GT, and 6X4/12X4 vacuum tube rectifiers

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Ref. 29:  Visual Analyzer 2011 XE Beta 0.3.2 - Visual Analyzer is a real time software program that contains a comprehensive set of measurement instruments, including an FFT Analyzer. It runs on a PC running Windows and can use existing internal sound hardware or can use external hardware.  http://www.sillanumsoft.org/

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Ref. 30: The Art of Electronics, Paul Horowitz and Winfield Hill, Cambridge University Press, 1991, pages 885-886.

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Ref. 31:  Sine-Wave Oscillator, Ron Mancini and Richard Palmer , Texas Instruments, Application Note SLOA060 - March 2001; http://www.ti.com/litv/pdf/sloa060

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Ref. 32:  Datasheet for LM13700, Texas Instruments, Figure 37 Sinusoidal VCO.

http://www.ti.com/cn/lit/gpn/lm13700

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Ref. 33:  U.S. Patent 2,709,799 Flame Detector System issued May 31, 1955 to M. H. Norton, assigned to Petcar Research.

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Ref. 34:   U.S. Patent 2,804,608 Flame Detector System issued August 27, 1957 to Carbauh, assigned to Petcar Research Corp.

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