GB1479813A – Control device for igniting and monitoring a flame-fired furnace
– Google Patents
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
1974-09-07
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.)
1974-09-07
Filing date
1975-08-08
Publication date
1977-07-13
1975-08-08
Application filed by Danfoss AS
filed
Critical
Danfoss AS
1977-07-13
Publication of GB1479813A
publication
Critical
patent/GB1479813A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
1974
1974-09-07
DE
DE19742442997
patent/DE2442997C2/en
not_active
Expired
1975
1975-06-19
DK
DK275875A
patent/DK137693C/en
active
1975-06-30
CH
CH844175A
patent/CH587450A5/xx
not_active
IP Right Cessation
1975-08-08
GB
GB33163/75A
patent/GB1479813A/en
not_active
Expired
1975-08-22
FR
FR7526023A
patent/FR2284091A1/en
active
Granted
1975-08-29
NL
NL7510256A
patent/NL7510256A/en
not_active
Application Discontinuation
1975-08-29
BE
BE159605A
patent/BE832911A/en
not_active
IP Right Cessation
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
FR2284091B1
(en)
1979-05-18
NL7510256A
(en)
1976-03-09
DK137693B
(en)
1978-04-17
BE832911A
(en)
1975-12-16
DK137693C
(en)
1978-09-25
CH587450A5
(en)
1977-04-29
FR2284091A1
(en)
1976-04-02
DK275875A
(en)
1976-03-08
DE2442997C2
(en)
1976-09-16
DE2442997B1
(en)
1976-02-05
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Legal Events
Date
Code
Title
Description
1977-11-23
PS
Patent sealed
1986-04-03
PCNP
Patent ceased through non-payment of renewal fee
