GB1415041A - Safety control circuit for fuel burning apparatus - Google Patents

Safety control circuit for fuel burning apparatus

Info

Publication number
GB1415041A
GB1415041A GB34773A GB34773A GB1415041A GB 1415041 A GB1415041 A GB 1415041A GB 34773 A GB34773 A GB 34773A GB 34773 A GB34773 A GB 34773A GB 1415041 A GB1415041 A GB 1415041A
Authority
GB
United Kingdom
Prior art keywords
burner
thyristor
detector
circuit
ignition
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
GB34773A
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.)
Koehring Co
Original Assignee
Koehring Co
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 Koehring Co filed Critical Koehring Co
Publication of GB1415041A publication Critical patent/GB1415041A/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
    • F23N5/02—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
    • 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

Abstract

1415041 Burner control circuits KOEHRING CO 3 Jan 1973 [11 Jan 1972] 347/73 Heading F4T A control circuit for a burner comprises leads 1, 2 for connection to an electrical power source and to electrical power consuming components of the burner, e.g. ignition transformer 4 and fuel pump and air fan motor 3, a heat sensitive circuit breaker 7 having breaker contacts 8 in lead 1 and means 9 for opening contacts 8, a thyristor 12 (triac or SCR) connected to the tripping means 9 and operatively associated with a variable resistance type flame detector 15 so that contacts 8 remain closed during normal burner operation and are opened by the tripping means 9, actuated by the thyristor 12, which is triggered by a device 18 having a defined firing voltage, under predetermined abnormal burner conditions. On starting motor 3 and transformer 4 are energized initially but detector 15 has a high resistance so that thyristor 12 is triggered to energize a heating coil 9 which will open contacts 8 unless ignition is effected within a given period, e.g. 15 seconds, the decrease in resistance of detector 15 on ignition rendering thyristor non-conductive. The detector 15 may be a temperature sensitive resistor or a cadmium sulphide photo-conductive cell and the device 18 may be a neon tube, a diac or a Zener diode. The inclusion of device 18 renders the circuit insensitive to flame flicker. The circuit will open contacts 8 on non-ignition, flame shift due to improper burning, or flame extinction. The circuit may include a switch which opens in response to too high a temperature in a combustion chamber in which the burner is located.
GB34773A 1972-01-11 1973-01-03 Safety control circuit for fuel burning apparatus Expired GB1415041A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21700372A 1972-01-11 1972-01-11

Publications (1)

Publication Number Publication Date
GB1415041A true GB1415041A (en) 1975-11-26

Family

ID=22809289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34773A Expired GB1415041A (en) 1972-01-11 1973-01-03 Safety control circuit for fuel burning apparatus

Country Status (6)

Country Link
US (1) US3741709A (en)
JP (1) JPS4878528A (en)
CA (1) CA982677A (en)
DE (1) DE2301283A1 (en)
FR (1) FR2174528A5 (en)
GB (1) GB1415041A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3975137A (en) * 1970-06-25 1976-08-17 Raytheon Company Burner control system
US3959697A (en) * 1974-11-29 1976-05-25 Robertshaw Controls Company Oil burner safety control system with integral ignition
US5470223A (en) * 1994-11-30 1995-11-28 Desa International, Inc. Microprocessor controlled fuel and ignition control for a fuel burning device
US5567144A (en) * 1995-10-05 1996-10-22 Desa International Inc. Hot surface ignition controller for fuel oil burner
US5899684A (en) * 1997-07-11 1999-05-04 Desa International, Inc. Power phase regulator circuit improvement, motor start switch, self-adjusting preheat and ignition trial improvement, and series-type voltage regulator improvement to hot surface ignition control for fuel oil burner
EP1033535A3 (en) 1999-03-03 2002-08-07 Desa International, Inc. Hot surface ignition controller for fuel oil burner
US20040209209A1 (en) * 2002-11-04 2004-10-21 Chodacki Thomas A. System, apparatus and method for controlling ignition including re-ignition of gas and gas fired appliances using same
US20100108658A1 (en) * 2008-10-20 2010-05-06 Saint-Gobain Corporation Dual voltage regulating system for electrical resistance hot surface igniters and methods related thereto
WO2010062388A2 (en) * 2008-11-30 2010-06-03 Saint-Gobain Ceramics & Plastics, Inc. Igniter voltage compensation circuit
US20110086319A1 (en) * 2009-07-15 2011-04-14 Saint-Gobain Ceramics & Plastics, Inc. Fuel gas ignition system for gas burners including devices and methods related thereto
US10215809B2 (en) 2015-11-24 2019-02-26 Carrier Corporation Method and system for verification of contact operation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537804A (en) * 1968-03-01 1970-11-03 Fenwal Inc Fuel ignition and flame detection system
US3672811A (en) * 1971-03-15 1972-06-27 Honeywell Inc Burner control system using a radiation operated relay means

Also Published As

Publication number Publication date
FR2174528A5 (en) 1973-10-12
US3741709A (en) 1973-06-26
JPS4878528A (en) 1973-10-22
DE2301283A1 (en) 1973-07-19
CA982677A (en) 1976-01-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930101