GB819099A - Improvements in flame detector or flame failure protection systems - Google Patents

Improvements in flame detector or flame failure protection systems

Info

Publication number
GB819099A
GB819099A GB1902756A GB1902756A GB819099A GB 819099 A GB819099 A GB 819099A GB 1902756 A GB1902756 A GB 1902756A GB 1902756 A GB1902756 A GB 1902756A GB 819099 A GB819099 A GB 819099A
Authority
GB
United Kingdom
Prior art keywords
flame
transformer
primary
sparking
electrodes
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
GB1902756A
Inventor
Edgar Pearson
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.)
Colne Switchgear K & W Ltd
Original Assignee
Colne Switchgear K & W Ltd
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 Colne Switchgear K & W Ltd filed Critical Colne Switchgear K & W Ltd
Priority to GB1902756A priority Critical patent/GB819099A/en
Publication of GB819099A publication Critical patent/GB819099A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/126Systems 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 electrical or electromechanical means

Abstract

819,099. Controlling burners. COLNE SWITCHGEAR (K. & W.) Ltd. June 19, 1957 [June 20, 1956], No. 19027/56. Classes 75(1) and 75(3) A flame detector comprises a pair of electrodes E, E<SP>1</SP> arranged in the flame and connected to the secondary winding of a transformer A, the primary winding of which controls a relay F adapted to control a device for indicating the presence or absence of the flame. On closing the switch I and the press button switch J the primary of the transformer is energized and a solenoid gas valve G is opened to supply gas to a burner K which is ignited by known means. A spark discharge takes place between the electrodes in the flame and the primary current of the transformer operates the relay F to close contacts FC shunting the press button switch J which can now be released. In the event of flame failure sparking between the electrodes ceases and in consequence the primary current of the transformer falls causing the contacts FC of the relay to open. A resistance D in the secondary circuit of the transformer minimises the generation of electro-magnetic waves. In a simplified circuit, Fig. 1, not shown, the rectifier C in the primary circuit is dispensed with and the relay contacts may be used to operate a signalling system instead of a fuel valve. In a modified circuit, Fig. 4, not shown, the transformer has a tapped primary and at starting the supply voltage is connected by a push button switch to a portion only of the primary winding and in consequence the secondary voltage causes sparking between the electrodes E, E' in the absence of a flame, the sparking being used to ignite the burner. The closing of the relay contacts, as a result of the sparking, energizes a gas valve and also connects the whole of the primary winding to the supply through a choke so that, when the push button starting switch is released, the secondary voltage is reduced to a value sufficient to maintain sparking only in the presence of a flame. In an alternative arrangement, Fig. 5, not shown, an auto-transformer is connected in series with the primary of the transformer to boost the primary voltage at starting when the electrodes are used for ignition.
GB1902756A 1956-06-20 1956-06-20 Improvements in flame detector or flame failure protection systems Expired GB819099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1902756A GB819099A (en) 1956-06-20 1956-06-20 Improvements in flame detector or flame failure protection systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1902756A GB819099A (en) 1956-06-20 1956-06-20 Improvements in flame detector or flame failure protection systems

Publications (1)

Publication Number Publication Date
GB819099A true GB819099A (en) 1959-08-26

Family

ID=10122533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1902756A Expired GB819099A (en) 1956-06-20 1956-06-20 Improvements in flame detector or flame failure protection systems

Country Status (1)

Country Link
GB (1) GB819099A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384440A (en) * 1964-03-24 1968-05-21 Lab D Electronique Et D Automa Ignition devices
GB2151059A (en) * 1983-12-08 1985-07-10 Helmersson Rune Alarm apparatus for pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384440A (en) * 1964-03-24 1968-05-21 Lab D Electronique Et D Automa Ignition devices
GB2151059A (en) * 1983-12-08 1985-07-10 Helmersson Rune Alarm apparatus for pipes

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