GB2219115A - Burner pilot flame indicator - Google Patents

Burner pilot flame indicator Download PDF

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Publication number
GB2219115A
GB2219115A GB8812363A GB8812363A GB2219115A GB 2219115 A GB2219115 A GB 2219115A GB 8812363 A GB8812363 A GB 8812363A GB 8812363 A GB8812363 A GB 8812363A GB 2219115 A GB2219115 A GB 2219115A
Authority
GB
United Kingdom
Prior art keywords
appliance
detection device
indicator
flame
user
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.)
Withdrawn
Application number
GB8812363A
Other versions
GB8812363D0 (en
Inventor
Kevin Ellison
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.)
Baxi Partnership Ltd
Original Assignee
Baxi Partnership 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 Baxi Partnership Ltd filed Critical Baxi Partnership Ltd
Priority to GB8812363A priority Critical patent/GB2219115A/en
Publication of GB8812363D0 publication Critical patent/GB8812363D0/en
Publication of GB2219115A publication Critical patent/GB2219115A/en
Withdrawn legal-status Critical Current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
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples 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
    • F23N5/24—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
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/20—Opto-coupler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/22—Pilot burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/02—Pilot flame sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • F23N2231/08—Fail safe for flame failures for pilot flame failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/20—Warning devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/20—Warning devices
    • F23N2231/22—Warning devices using warning lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • 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
    • 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

Landscapes

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

Abstract

An appliance fired by combustible fuel comprises a main fuel burner 10 having an operatively associated pilot burner 14. A flame and/or temperature detection device 16 is operatively associated with the pilot burner of the appliance and is connected to an indicator device 17, 19 adapted to be located at a position on the appliance readily viewable to a user and/ or at a location remote from the appliance also readily viewable by a user. As a result the operational condition of the pilot burner can easily and readily be seen. <IMAGE>

Description

A PILOT FLAME INDICATOR This invention relates to appliances fired by combustible fuel and comprising a main fuel burner having an operatively associated pilot burner (hereinafter referred to as wan appliance of the type aforesaid").
Examples of such appliances of the type aforesaid are gas or oil-fired boilers, water heaters or fires.
With some appliances of the type aforesaid it is difficult, if not impossible, to see if the pilot burner is ignited, which is unsatisfactory insofar as the user is concerned, due to restricted viewing access which can be caused, inter alia, by the location of the pilot burner or both the main and -pilot burners, by the structural design of the appliance, by the location of the appliance upon installation of same, or by a combination of these factors.
It is an object of the present invention to provide an appliance of the type aforesaid in which the aforesaid drawback is obviated or mitigated.
According to the present invention there is ptovided in or for an appliance of the type aforesaid a flame and/or temperature detection device adapted to be operatively associated with the pilot burner of the appliance and connected to an indicator device adapted to be located at a position on the appliance readily viewable to a user and/or at a location remote from the appliance also readily viewable by a user. Preferably the detection device is a thermocouple which, as is customary, linked to a main fuel supply valve of the appliance.The detection device may equally well be, if a thermocouple is not provided or if it is not desired to use the thermocouple to actuate the indicator device, any other convenient form of sensor or detector including, inter alia, infra-red, piezo-electric, light, magnetic or optical, or a rectification through flame device, or a bimetallic switch arrangement or combinations thereof.
The indicator device may, inter alia, be a meter-type indicating instrument, for example a galvanometer, an indicator lamp, a liquid crystal or an L.E.D. or combinations thereof.
The conception of the present invention may also be achieved by the direct use of fibre optical technology.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying diagrammatic drawing which illustrates alternative means for indicating pilot burner operation.
In the drawing a main burner, say, of a gas boiler is indicated at 10, the burner 10 being connected by a gas supply line 11 to a main gas valve 12 which is also connected to an inlet- pipe 13 for gas mains supply (not shown).
A pilot gas burner 14 is disposed ' adjacent to the main gas burner 10 for igniting the latter and is, in turn, connected to the gas valve 12 by a supply line 15.
A thermocouple 16 is disposed adjacent the pilot burner 14, usually in the flame emitted by the latter, and is operatively connected to the gas valve 12.
The thermocouple 16 is, constituted by dissimilar metals which, when heated, generate an electromotive force (e.m.f.). The latter is of the order of ten (10) to twenty (20) millivolts for example, and is used to hold open a fail safe electromagnetic unit (not shown) in the main fuel line 11 to the main burner 10.
According to the present invention, this e.m.f.
is used directly to drive a galvanometer type instrument 17 and the e.m.f. can be amplified as indicated at 18 to illuminate an L.E.D. 19 or a lamp bulb or a liquid crystal.
The indicator device 17 or 19 is disposed at a readily viewable location on the gas boiler or at a readily viewable location remote from the gas boiler or both.
20 indicates an alternative flame/temperature detection devices as hereinbefore specified.
Another alternative is an optical cable 21, whereof one end 22 "sees" the flame while the other end 23 is disposed at a readily viewable location.
The light transmitted through the optical cable 21 may be a mixture of both fibre optical and electric/ electronic transmission.

Claims (11)

1. A flame and/or temperature detection device adapted to be operatively associated with a pilot burner of an appliance having a main fuel burner associated with the pilot burner and being connected to an indicator device adapted to be located at a position on the appliance readily viewable to a user and/or at a location remote from the appliance also readily viewable by a user.
2. A detection device as claimed in claim 1 is the form of a thermocouple adapted to be linked to a main fuel supply valve of the appliance.
3. A detection device as claimed in claim 1 adapted to be linked to a main fuel supply valve of the appliance and being any one of an infra-red, piezo-electric, light, magnetic or optical sensor or detector, or a rectification through flame device, or a bimetallic switch arrangement or a combination thereof.
4. A detection device as claimed in any one of claims 1 to 3 in which the indicator device is a meter-type indicating instrument, for example a galvanometer, or an indicator lamp, or a liquid crystal or an L.E.D. or a combination thereof.
5. A detection device as claimed in claim 1 in which the detection device and the indicator device is a fibre optical arrangement.
6. An appliance of the type aforesaid comprising a flame and/or temperature detection device adapted to be operatively associated with the pilot burner of the appliance and connected to an indicator device adapted to be located at a position on the appliance readily viewable to a user and/or at a location remote from the appliance also readily viewable by a user.
7. An appliance as claimed in claim 6, in which the detection device is a thermocouple linked to a main fuel supply valve of the appliance.
8. An appliance as claimed in claim 6 in which the detection device is an infra-red, piezo-electric, light, magnetic or optical sensor or detector, or a rectification through flame device, or a bimetallic switch arrangement or a combination thereof.
9. An appliance as claimed in any one of claims 6 to 8 in which the indicator device is a meter-type indicating instrument, for example a galvanometer, or an indicator lamp, or a liquid crystal or an L.E.D.
or a combination thereof.
10. An appliance as claimed in claim 6 in which the detection device and the indicator device is a fibre optical arrangement.
11. In or for an appliance of the type aforesaid a flame and/or temperature detection device, substantially as hereinbefore described with reference to the accompanying drawing.
GB8812363A 1988-05-25 1988-05-25 Burner pilot flame indicator Withdrawn GB2219115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8812363A GB2219115A (en) 1988-05-25 1988-05-25 Burner pilot flame indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8812363A GB2219115A (en) 1988-05-25 1988-05-25 Burner pilot flame indicator

Publications (2)

Publication Number Publication Date
GB8812363D0 GB8812363D0 (en) 1988-06-29
GB2219115A true GB2219115A (en) 1989-11-29

Family

ID=10637503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8812363A Withdrawn GB2219115A (en) 1988-05-25 1988-05-25 Burner pilot flame indicator

Country Status (1)

Country Link
GB (1) GB2219115A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859192A1 (en) * 1997-02-18 1998-08-19 BSH Bosch und Siemens Hausgeräte GmbH Gas range, especially gas oven
EP1479974A1 (en) * 2003-05-16 2004-11-24 Thetford Corporation Method and apparatus for visually detecting a burner flame of a gas appliance
EP1253376A3 (en) * 2001-04-26 2005-01-19 David Deng Gas pilot system and method having improved oxygen level detection capability and gas fueled device including the same
US10022014B2 (en) 2012-12-13 2018-07-17 Copreci, S. Coop. Gas cooking appliance

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1058517A (en) * 1964-07-13 1967-02-15 Combustion Eng Apparatus and method of detecting the presence of flame in a combustion chamber
GB1156312A (en) * 1965-04-30 1969-06-25 L S M Controls Ltd Improvements relating to Flame Detection of Control in Pulverised Fuel Burner Installations
GB1328639A (en) * 1970-04-30 1973-08-30 Wohlters B Warning devices for gas appliances
GB1408228A (en) * 1972-10-28 1975-10-01 Vdo Schindling Device for detecting the ignition of a comustible gas
GB1528827A (en) * 1975-05-28 1978-10-18 Sony Corp Burner control apparatus
GB2004639A (en) * 1977-09-26 1979-04-04 Calari R Safety apparatus for stopping gas leakages
GB1561622A (en) * 1977-05-11 1980-02-27 Combustion Unltd Inc Flare stack
GB2141854A (en) * 1983-05-31 1985-01-03 Shigeru Fukumoto Gas accident prevention

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1058517A (en) * 1964-07-13 1967-02-15 Combustion Eng Apparatus and method of detecting the presence of flame in a combustion chamber
GB1156312A (en) * 1965-04-30 1969-06-25 L S M Controls Ltd Improvements relating to Flame Detection of Control in Pulverised Fuel Burner Installations
GB1328639A (en) * 1970-04-30 1973-08-30 Wohlters B Warning devices for gas appliances
GB1408228A (en) * 1972-10-28 1975-10-01 Vdo Schindling Device for detecting the ignition of a comustible gas
GB1528827A (en) * 1975-05-28 1978-10-18 Sony Corp Burner control apparatus
GB1561622A (en) * 1977-05-11 1980-02-27 Combustion Unltd Inc Flare stack
GB2004639A (en) * 1977-09-26 1979-04-04 Calari R Safety apparatus for stopping gas leakages
GB2141854A (en) * 1983-05-31 1985-01-03 Shigeru Fukumoto Gas accident prevention

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859192A1 (en) * 1997-02-18 1998-08-19 BSH Bosch und Siemens Hausgeräte GmbH Gas range, especially gas oven
EP1253376A3 (en) * 2001-04-26 2005-01-19 David Deng Gas pilot system and method having improved oxygen level detection capability and gas fueled device including the same
EP1479974A1 (en) * 2003-05-16 2004-11-24 Thetford Corporation Method and apparatus for visually detecting a burner flame of a gas appliance
US10022014B2 (en) 2012-12-13 2018-07-17 Copreci, S. Coop. Gas cooking appliance

Also Published As

Publication number Publication date
GB8812363D0 (en) 1988-06-29

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)