United States Patent 9,784,449

Flame Sensing System

Issued 10/10/2017 to Margolin

Application Number 14,316,489

Filed 6/26/2014

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.

 

 

 

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Transaction History (10/10/2017

This patent is for sale. Principals only.

 

References


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

 

IDS 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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IDS 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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IDS 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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IDS 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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IDS 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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IDS 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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IDS 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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IDS 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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IDS 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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IDS 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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(PDF page 8)

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

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

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

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

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

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

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

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

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IDS 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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IDS 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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Examiner’s References:

 

U.S. Patent 6,501,383 Method and device for monitoring a flame issued December 31, 2002 to Haupenthal

 

 

 

 

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U.S. Patent 6,486,486 Flame monitoring system issued November 26, 2002 to Haupenthal

 

 

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Publication 2008/0266000 Digital Frequency Multiplier published October 30, 2008; Ngo et al.

 

 

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Examiner’s References

 

Publication 2014/0085503 Mobile Communication Apparatus and Flashlight Controlling Method

Wen-Yueh Su; et al. published March 27, 2014.

 

 

 

  

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US Patent 5,547,369 Camera, spectrum analysis system, and combustion evaluation apparatus employing them issued August 20, 1996 to Sohma, et al.

 

 

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Examiner’s References

 

US Patent 5,051,590   Fiber optic flame detection and temperature measurement system having one or more in-line temperature dependent optical filters issued September 24, 1991 to Kern.

 

 

 

 

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US Patent 5,300,836   Flame rod structure, and a compensating circuit and control method thereof issued April 5, 1994  to Cha.

 

 

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Publication 2012/0280134    Monitoring of the presence of two flames in a fuel combustion device published November 8, 2012; Diebold.

 

 

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Publication 2014/0162197    Multijet Burner with charge interaction published June 12, 2014; Krichtafovitch.

 

 

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Publication 2015/0362177    Flame position control electrodes published 12-2015; Krichtafovitch.

 

 

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