GB1452682A - Flame ignition and supervision system - Google Patents

Flame ignition and supervision system

Info

Publication number
GB1452682A
GB1452682A GB966674A GB966674A GB1452682A GB 1452682 A GB1452682 A GB 1452682A GB 966674 A GB966674 A GB 966674A GB 966674 A GB966674 A GB 966674A GB 1452682 A GB1452682 A GB 1452682A
Authority
GB
United Kingdom
Prior art keywords
scr
flame
capacitor
valve
burner
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
GB966674A
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.)
Kidde Inc
Original Assignee
Walter Kidde and Co Inc
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 Walter Kidde and Co Inc filed Critical Walter Kidde and Co Inc
Publication of GB1452682A publication Critical patent/GB1452682A/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
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays 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
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/18—Applying test signals, e.g. periodic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/12—Flame sensors with flame rectification current detecting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/10—Fail safe for component failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/12—Fail safe for ignition failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

1452682 Burners WALTER KIDDE & CO INC 4 March 1974 [12 March 1973] 9666/74 Heading F4T A control circuit for a fuel burner has an electrical energy store means for receiving and storing energy from a source, an energy transfer means responsive to a burner flame detector for transferring energy in the store means to valve means controlling the supply of burner fuel and limit means for preventing sufficient energy from flowing from the source directly to the valve means to actuate it during normal operation. In the circuit energisation of a coil 49 opens the control valve. Coil 49 is connected to an isolation diode 52 and is parallelled by a capacitor 51 and a pulse responsive resistor 53. During positive halfcycles of the source line 44 relative line 41 an energy store capacitor 54 and a spark capacitor 57 are charged via primary winding 61 of a spark transformer 31. When a flame is present on the burner 47 the flame detecting circuit 35 provides a sufficient charge on the capacitor 73 due to the firing of SCR 71 to cause SCR 36 to fire each half cycle which discharges a delay capacitor 22 so that sufficient charge cannot be built up to fire a SCR 24. Firing of the latter causes the valve to open and a spark at the transformer 31 to ignite the burner, which spark is caused on each absence of the flame. Firing of the SCR 36 maintains the valve open due to the discharge of capacitors 54, 57 therethrough. If a flame is not established a delay capacitor 95 is charged and after storing sufficient energy fires a threshold neon bulb 101 which causes SCR 99 to conduct and a drop across resistor 83 so that SCR 24 conducts in a shut-down mode and lock out thermal circuit breaker 45 opens. Bimetallic member 33 also causes shut-down after a predetermined :time if SCR 24 keeps firing due to a flame not being detected. Modifications of the valve control circuit are described (see Figs. 4-6 not shown).
GB966674A 1973-03-12 1974-03-04 Flame ignition and supervision system Expired GB1452682A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00340448A US3847533A (en) 1973-03-12 1973-03-12 Flame ignition and supervision system

Publications (1)

Publication Number Publication Date
GB1452682A true GB1452682A (en) 1976-10-13

Family

ID=23333399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB966674A Expired GB1452682A (en) 1973-03-12 1974-03-04 Flame ignition and supervision system

Country Status (5)

Country Link
US (1) US3847533A (en)
JP (1) JPS49120232A (en)
AU (1) AU6645574A (en)
CA (1) CA1018267A (en)
GB (1) GB1452682A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914092A (en) * 1974-09-23 1975-10-21 Johnson Service Co Direct spark ignition system with sampling flame sensor
US3947220A (en) * 1974-10-21 1976-03-30 Johnson Service Company Fuel ignition control arrangement
US3941553A (en) * 1974-10-29 1976-03-02 Scheu Manufacturing Company Heater safety control system
US3975136A (en) * 1975-07-08 1976-08-17 Emerson Electric Co. Burner control system
US4000961A (en) * 1975-08-26 1977-01-04 Eclipse, Inc. Primary flame safeguard system
US4128387A (en) * 1976-10-22 1978-12-05 Paul T. Mu Ignition device
US4116613A (en) * 1977-01-24 1978-09-26 Johnson Controls, Inc. Direct ignition system with interlock protection
DE2805113C2 (en) * 1978-02-07 1983-02-17 Pintsch Bamag Antriebs- Und Verkehrstechnik Gmbh, 4220 Dinslaken Ignition system for gas-powered combustion systems
US4521180A (en) * 1982-11-29 1985-06-04 Kidde, Inc. Laboratory burner apparatus
US4487030A (en) * 1983-08-08 1984-12-11 The Stolle Corporation Gas/electric operated absorption refrigerator having automatic flame detection and restart capability with visual indication of operating status
US5244379A (en) * 1991-01-22 1993-09-14 Henny Penny Corporation Control system for a gas cooking device
CN203456389U (en) * 2013-08-23 2014-02-26 艾默生电气公司 Relay driving circuit
US10151492B2 (en) * 2014-10-22 2018-12-11 Grand Mate Co., Ltd. Ignition controlling device of gas appliance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610790A (en) * 1969-09-05 1971-10-05 Emerson Electric Co Ignition and flame detection means for gas burners
US3610789A (en) * 1969-09-30 1971-10-05 Eaton Yale & Towne Flame rod safety control system
US3726630A (en) * 1970-07-15 1973-04-10 Liberty Combustion Corp Flame ignition

Also Published As

Publication number Publication date
JPS49120232A (en) 1974-11-16
AU6645574A (en) 1975-09-11
CA1018267A (en) 1977-09-27
US3847533A (en) 1974-11-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee