GB1185972A - Improvements in or relating to control apparatus - Google Patents

Improvements in or relating to control apparatus

Info

Publication number
GB1185972A
GB1185972A GB1202268A GB1202268A GB1185972A GB 1185972 A GB1185972 A GB 1185972A GB 1202268 A GB1202268 A GB 1202268A GB 1202268 A GB1202268 A GB 1202268A GB 1185972 A GB1185972 A GB 1185972A
Authority
GB
United Kingdom
Prior art keywords
tubes
bridge
circuit
burner
march
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
GB1202268A
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of GB1185972A publication Critical patent/GB1185972A/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
    • F23N2229/00—Flame sensors
    • F23N2229/16—Flame sensors using two or more of the same types of flame sensor

Abstract

1,185,972. Photo-electric burner control. HONEYWELL Inc. March 12, 1968 [March 15, 1967], No. 12022/68. Heading G1A. [Also in Division F4] A burner control system includes Geiger tubes 21, 22 acting as flame sensing devices coupled into opposite sides a-b-c, a-d-c of a bridge circuit of which the other arms include the coils A, B of relay having contracts A1, B1 and responsive to the state of the Geiger tubes a third relay coil C being connected between points b, d to detect difference in state between the tubes 21, 22 by becoming energized when the bridge is unbalanced and thus indicating malfunction through a circuit 14 by closing contacts C2, C3 while the supply of electrical energy to the burner installation is discontinued by the opening of contacts C1, C3. The presence of flame with both tubes functioning normally causes the burner installation to be energized through terminals 11, 12. A modification Fig. 2 includes two silicon controlled rectifiers 23, 24 connected in parallel and two impedances in the form of resistors 25, 26 develop voltage signals supplied to the gates of the rectifiers to cause them to conduct or not according to the response of the tubes 21, 22. In a further modification Fig. 3 (not shown) a single silicon controlled rectifier is included in the supply circuit and has its gate coupled to point d of the bridge.
GB1202268A 1967-03-15 1968-03-12 Improvements in or relating to control apparatus Expired GB1185972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62343667A 1967-03-15 1967-03-15

Publications (1)

Publication Number Publication Date
GB1185972A true GB1185972A (en) 1970-04-02

Family

ID=24498083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1202268A Expired GB1185972A (en) 1967-03-15 1968-03-12 Improvements in or relating to control apparatus

Country Status (3)

Country Link
US (1) US3463600A (en)
DE (1) DE1673960A1 (en)
GB (1) GB1185972A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE331148B (en) * 1968-04-29 1970-12-14 Kockums Mekaniska Verkstads Ab
US3645661A (en) * 1969-08-06 1972-02-29 Ranco Inc Burner control system
US3624407A (en) * 1969-10-15 1971-11-30 Simicon Co Primary control means for furnaces
US3683372A (en) * 1971-05-27 1972-08-08 Robert Horn Multimode self-checking flame detector
US3825913A (en) * 1972-03-31 1974-07-23 Electronics Corp America Fuel burner supervisory system
US3732433A (en) * 1972-05-25 1973-05-08 Webster Electric Co Inc Combustion control circuit for a fuel burner
US3751212A (en) * 1972-06-29 1973-08-07 Honeywell Inc Fuel burner control system
US4395638A (en) * 1981-09-18 1983-07-26 Electronics Corporation Of America Self-checking flame failure control
US4854852A (en) * 1987-09-21 1989-08-08 Honeywell Inc. System for redundantly processing a flame amplifier output signal
US7590470B2 (en) * 2004-01-23 2009-09-15 Aos Holding Company Heating apparatus and method of detecting a short-cycling condition
US20140287369A1 (en) * 2013-03-20 2014-09-25 Bruce George Yates Dual/Redundant Self Check Ultraviolet Flame Sensor and Combustion Safeguard Control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160197A (en) * 1964-12-08 Bummer safeguard control apparatus
US2775291A (en) * 1954-02-15 1956-12-25 Honeywell Regulator Co Electrical control apparatus, including two condition responsive means
US3286761A (en) * 1965-12-27 1966-11-22 Honeywell Inc Self-monitoring condition detecting apparatus

Also Published As

Publication number Publication date
US3463600A (en) 1969-08-26
DE1673960A1 (en) 1971-08-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees