GB1479813A - Control device for igniting and monitoring a flame-fired furnace - Google Patents

Control device for igniting and monitoring a flame-fired furnace

Info

Publication number
GB1479813A
GB1479813A GB33163/75A GB3316375A GB1479813A GB 1479813 A GB1479813 A GB 1479813A GB 33163/75 A GB33163/75 A GB 33163/75A GB 3316375 A GB3316375 A GB 3316375A GB 1479813 A GB1479813 A GB 1479813A
Authority
GB
United Kingdom
Prior art keywords
relay
switch
flame
monitoring
coil
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
GB33163/75A
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of GB1479813A publication Critical patent/GB1479813A/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
    • 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
    • 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
    • F23N2227/24—Pilot burners the pilot burner not burning continuously
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/28—Ignition circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/32—Igniting for a predetermined number of cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors

Landscapes

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

Abstract

1479813 Burner controls DANFOSS AS 8 Aug 1975 [7 Sept 1974] 33163/75 Heading F4T An A.C. control device for igniting and monitoring a flame-fired furnace comprises a fuel relay M, for controlling the fuel supply, the relay being connected in series with an impedance Z, R3, and is energizable in dependence on the operation of at least one contact M1 of a flame monitoring circuit FW, a safety switch V1, heatable by a coil V, and optionally a time switch T1, the impedance having a resistance value such that the fuel relay M drops-off when the voltage applied to the control device falls below a value which is at least equal to that necessary for ignition and/or monitoring of the furnace, the impedance being so connected that it influences the current flow through the heating coil V of the safety switch V1, to a lesser extent. In operation, with boiler thermostat KT closed, heating coil T of the time switch T1 is heated and after a few seconds the switch closes at a and voltage is applied to the series circuit containing fuel relay M, and coil V is heated. Current flows through relay M, switches M1, M2, close, to supply voltage to ignition gas magnetic valve MV1 so that gas flows to the furnace combustion chamber. Simultaneously, ignition device ZT is actuated through a closed photocontact F3 and the gas is ignited. If flame monitor FW shows that flame exists, photoswitch Fl closes and photoswitches F2, F3, open, so that a current limited by resistance R3 flows to hold relay M, but not to actuate the latter. Coil T cools so that switch T1 returns to rest position b and MV2 and the series circuit are supplied from phase lead 4 through switches Fl, M1. When the boiler reaches the required temperature thermostat KT opens, valves MV1, MV2, as well as relay M, are de-energized and the gas supply is interrupted. Zener diode Z may be replaced by an ohmic resistance (R4) bridged by a diode (D3) Fig. 2 (not shown). A glow lamp GL is actuated when switch V1 moves to operating position b.
GB33163/75A 1974-09-07 1975-08-08 Control device for igniting and monitoring a flame-fired furnace Expired GB1479813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742442997 DE2442997C2 (en) 1974-09-07 1974-09-07 CONTROL UNIT FOR IGNITING AND MONITORING A COMBUSTION SYSTEM

Publications (1)

Publication Number Publication Date
GB1479813A true GB1479813A (en) 1977-07-13

Family

ID=5925194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33163/75A Expired GB1479813A (en) 1974-09-07 1975-08-08 Control device for igniting and monitoring a flame-fired furnace

Country Status (7)

Country Link
BE (1) BE832911A (en)
CH (1) CH587450A5 (en)
DE (1) DE2442997C2 (en)
DK (1) DK137693C (en)
FR (1) FR2284091A1 (en)
GB (1) GB1479813A (en)
NL (1) NL7510256A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100491832C (en) * 2007-06-29 2009-05-27 武汉钢铁(集团)公司 Automatic ignition system and flame probe system
CN114947166A (en) * 2022-05-10 2022-08-30 贵州省烟草公司六盘水市公司 Biomass baking deflagration-proof method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180380A (en) * 1976-04-13 1979-12-25 United Gas Industries Limited Electrical controls for heating appliances
US4077762A (en) * 1976-06-21 1978-03-07 Johnson Controls, Inc. Fuel ignition system having contact interlock protection
FR2462660A1 (en) * 1979-08-01 1981-02-13 Chaffoteaux Et Maury IMPROVEMENTS TO DEVICES TO CONTROL SAFELY GAS VALVES
US5020988A (en) * 1990-10-22 1991-06-04 Honeywell Inc. Intermittent pilot type burner control with a single control relay

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1751280C3 (en) * 1968-05-02 1975-08-28 Danfoss A/S, Nordborg (Daenemark) Control unit for a flame monitoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100491832C (en) * 2007-06-29 2009-05-27 武汉钢铁(集团)公司 Automatic ignition system and flame probe system
CN114947166A (en) * 2022-05-10 2022-08-30 贵州省烟草公司六盘水市公司 Biomass baking deflagration-proof method
CN114947166B (en) * 2022-05-10 2023-05-30 贵州省烟草公司六盘水市公司 Biomass baking explosion-proof method

Also Published As

Publication number Publication date
DK137693B (en) 1978-04-17
DK275875A (en) 1976-03-08
NL7510256A (en) 1976-03-09
CH587450A5 (en) 1977-04-29
DE2442997B1 (en) 1976-02-05
FR2284091B1 (en) 1979-05-18
DE2442997C2 (en) 1976-09-16
BE832911A (en) 1975-12-16
DK137693C (en) 1978-09-25
FR2284091A1 (en) 1976-04-02

Similar Documents

Publication Publication Date Title
GB1093698A (en) Automatic fuel ignition and control system
US2125473A (en) Gas burner control system
GB1479813A (en) Control device for igniting and monitoring a flame-fired furnace
US2323767A (en) Automatic ignition and gas shutoff mechanism
US2382216A (en) Safety control for gaseous fuel burners
US3484177A (en) Igniter and control means
US2398215A (en) Safety control apparatus for gaseous fuel burners
US3501253A (en) Automatic ignition systems
US2430373A (en) Safety and ignition control system for fuel burners
US2296340A (en) Safety control apparatus for gaseous fuel burners
US3026932A (en) Safety ignition system for gas burners
US3204685A (en) Burner ignition and control system
US3062276A (en) Electrical control system for gas burner assemblies
US4243373A (en) Direct ignition gas burner control system
US3551084A (en) Electric ignition system having a ptc ignitor element
US3457020A (en) Direct ignition of fluid fuel burners
US4168141A (en) Safety ignition means for burner installations
US2982351A (en) Heater pilot relighter
US3718838A (en) Ignition device for a gas fired appliance
US2448475A (en) Safety control apparatus for fuel burners
JPS5630535A (en) Safety device for combustion system
GB1293202A (en) Electric ignition and control system for burners
US3589847A (en) Ignition system
US2479779A (en) Thermostatic safety control system for gas burners
US2379113A (en) Safety control for fuel burners

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee