CA980894A - Optical flame sensing system - Google Patents

Optical flame sensing system

Info

Publication number
CA980894A
CA980894A CA145,232A CA145232A CA980894A CA 980894 A CA980894 A CA 980894A CA 145232 A CA145232 A CA 145232A CA 980894 A CA980894 A CA 980894A
Authority
CA
Canada
Prior art keywords
sensing system
optical flame
flame sensing
optical
sensing
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
CA145,232A
Other languages
English (en)
Other versions
CA145232S (en
Inventor
Elihu C. Thomson
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.)
Electronics Corp of America
Original Assignee
Electronics Corp of America
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 Electronics Corp of America filed Critical Electronics Corp of America
Application granted granted Critical
Publication of CA980894A publication Critical patent/CA980894A/en
Expired 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
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • 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
    • F23N2231/00—Fail safe
    • F23N2231/04—Fail safe for electrical power failures

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Control Of Combustion (AREA)
  • Emergency Protection Circuit Devices (AREA)
CA145,232A 1971-06-21 1972-06-20 Optical flame sensing system Expired CA980894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15506271A 1971-06-21 1971-06-21

Publications (1)

Publication Number Publication Date
CA980894A true CA980894A (en) 1975-12-30

Family

ID=22553977

Family Applications (1)

Application Number Title Priority Date Filing Date
CA145,232A Expired CA980894A (en) 1971-06-21 1972-06-20 Optical flame sensing system

Country Status (8)

Country Link
US (1) US3710149A (de)
BE (1) BE785154A (de)
CA (1) CA980894A (de)
CH (1) CH541774A (de)
DE (1) DE2230343C3 (de)
FR (1) FR2143133B1 (de)
GB (1) GB1388057A (de)
NL (1) NL7208514A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2238393A5 (de) * 1973-07-17 1975-02-14 Rv Const Electriques
US3903418A (en) * 1973-12-14 1975-09-02 Forney International Infrared dynamic flame detector
US3866130A (en) * 1974-03-07 1975-02-11 Rockwell International Corp Signal comparator with programmed threshold
US3958126A (en) * 1974-11-25 1976-05-18 Electronics Corporation Of America Logic circuitry
US3995221A (en) 1975-03-20 1976-11-30 Electronics Corporation Of America Flame responsive system
US4257759A (en) * 1979-03-15 1981-03-24 Honeywell Inc. Fuel burner primary control means
JP2887993B2 (ja) * 1991-10-25 1999-05-10 日本電気株式会社 周波数ミキサ回路
US5227639A (en) * 1991-12-16 1993-07-13 Honeywell Inc. Infrared-based sensing circuit providing an output simulating the output of a flame rod sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178583A (en) * 1960-04-04 1965-04-13 Motorola Inc Transistor voltage comparator circuit
US3033996A (en) * 1960-11-15 1962-05-08 Robert R Atherton Voltage comparator having pulse generator operative when input voltage back-biases comparison diode
US3492589A (en) * 1967-04-03 1970-01-27 Honeywell Inc Failsafe circuit apparatus
US3601614A (en) * 1970-05-25 1971-08-24 Chrysler Corp Automatic anti-glare rearview mirror system

Also Published As

Publication number Publication date
DE2230343C3 (de) 1975-06-12
FR2143133A1 (de) 1973-02-02
CH541774A (de) 1973-09-15
FR2143133B1 (de) 1973-07-13
DE2230343A1 (de) 1972-12-28
US3710149A (en) 1973-01-09
BE785154A (fr) 1972-10-16
NL7208514A (de) 1972-12-27
DE2230343B2 (de) 1974-10-17
GB1388057A (en) 1975-03-19

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