GB1406678A - Boiler burner balancing-counter control system - Google Patents

Boiler burner balancing-counter control system

Info

Publication number
GB1406678A
GB1406678A GB3764172A GB3764172A GB1406678A GB 1406678 A GB1406678 A GB 1406678A GB 3764172 A GB3764172 A GB 3764172A GB 3764172 A GB3764172 A GB 3764172A GB 1406678 A GB1406678 A GB 1406678A
Authority
GB
United Kingdom
Prior art keywords
burners
circuits
output
banks
numbers
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
GB3764172A
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.)
Forney International Inc
Original Assignee
Forney International 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 Forney International Inc filed Critical Forney International Inc
Publication of GB1406678A publication Critical patent/GB1406678A/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
    • F23N5/08Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00Controlling
    • F23N2237/02Controlling two or more burners

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

1406678 Automatic control FORNEY INTERNATIONAL Inc 11 Aug 1972 [11 Aug 1971] 37641/72 Heading G3N [Also in Division F4] A control system for two banks of burners in a furnace comprises electronic summing circuits for providing signals respresentative of the number of burners in operation in each bank, comparator means for comparing the two signals, and control means including logic circuitry for controlling the number of burners in operation, in response to the overall load deinand. In the illustrated embodiment the burners are connected to an adder/ subtractor amplifier 80 which produces an output depending on the difference in the numbers of burners in operation in the two banks, electronic comparator circuits 92, 94 connected to AND gates 110, 114, 116 and 118 producing signal outputs responsive to the difference in the numbers of burners in operation in the two banks, and a control circuit 128 responsive to said output signals for controlling the burners. Each summing circuit comprises flame detectors (16), Fig. 2, (not shown), one for each burner (15), connected to the input circuits of transistor amplifiers, Fig. 4, (not shown) whose output circuits are connected to the differential amplifier 80 and in parallel with each other. This output is fed into the two comparators 92, 94 in which the voltage signal from the amplifier 80 is compared with voltages from a corresponding pair of two series of potentiometers 46, 48, in which each pair corresponds to a given value of the difference in the numbers of burners in operation. The output from the comparator circuits 92, 94 indicates which of the banks has a greater number of burners in operation and is fed, together with signals from a load control circuit 128, which indicates the overall heat demand, into the four AND gates 110, 114, 116 and 118 whose output controls two burner control circuits 142, 146. The control circuits 142, 146 restore the balance in the numbers of burners by lighting some in one bank if more heat is required or extinguishing some in the other bank if less heat is required, by operating valves V10, V10' in fuel-pipes P10, P10'. A D.C. source 20 provides power for all the active circuits and a Zener diode network 26 provides a voltage reference.
GB3764172A 1971-08-11 1972-08-11 Boiler burner balancing-counter control system Expired GB1406678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17085471A 1971-08-11 1971-08-11

Publications (1)

Publication Number Publication Date
GB1406678A true GB1406678A (en) 1975-09-17

Family

ID=22621544

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3764172A Expired GB1406678A (en) 1971-08-11 1972-08-11 Boiler burner balancing-counter control system

Country Status (9)

Country Link
JP (1) JPS4835201A (en)
BR (1) BR7205387D0 (en)
CA (1) CA953387A (en)
DE (1) DE2239420A1 (en)
ES (1) ES405699A1 (en)
FR (1) FR2150045A5 (en)
GB (1) GB1406678A (en)
IT (1) IT969247B (en)
NL (1) NL7211017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176312A (en) * 1985-05-29 1986-12-17 York Int Ltd A heating and/or cooling system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329141Y2 (en) * 1973-03-27 1978-07-21
JPS50111244U (en) * 1974-02-26 1975-09-10
JPS51120436A (en) * 1975-04-16 1976-10-21 Hitachi Ltd An automatic-burner controlling system
US4043742A (en) * 1976-05-17 1977-08-23 Environmental Data Corporation Automatic burner monitor and control for furnaces
JPH0580204U (en) * 1992-04-01 1993-11-02 ヤンマー農機株式会社 Processing equipment for transplanting rush seedlings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2176312A (en) * 1985-05-29 1986-12-17 York Int Ltd A heating and/or cooling system
GB2176312B (en) * 1985-05-29 1990-02-14 York Int Ltd A heating and/or cooling system

Also Published As

Publication number Publication date
ES405699A1 (en) 1975-09-01
BR7205387D0 (en) 1973-06-14
NL7211017A (en) 1973-02-13
AU4545472A (en) 1974-02-14
DE2239420A1 (en) 1973-03-08
IT969247B (en) 1974-03-30
CA953387A (en) 1974-08-20
JPS4835201A (en) 1973-05-24
FR2150045A5 (en) 1973-03-30

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Legal Events

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