JPS5538475A - Safety device for combustion - Google Patents

Safety device for combustion

Info

Publication number
JPS5538475A
JPS5538475A JP11257978A JP11257978A JPS5538475A JP S5538475 A JPS5538475 A JP S5538475A JP 11257978 A JP11257978 A JP 11257978A JP 11257978 A JP11257978 A JP 11257978A JP S5538475 A JPS5538475 A JP S5538475A
Authority
JP
Japan
Prior art keywords
flame
thermocouple
primary
electromotive force
primary flame
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.)
Pending
Application number
JP11257978A
Other languages
Japanese (ja)
Inventor
Eiichi Tanaka
Noboru Ishibashi
Norio Kawabata
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11257978A priority Critical patent/JPS5538475A/en
Publication of JPS5538475A publication Critical patent/JPS5538475A/en
Pending 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

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 Combustion (AREA)

Abstract

PURPOSE:To accomplish safe operation accurately even at the oxygen starvation by means of two thermocouples arranged in a specified manner. CONSTITUTION:The first thermocouple 16 is arranged above the primary flame port 11 of a pilot burner 7 and the second thermocouple 17 is at a fixed distance above the main gas burner 3. With such an arrangement if the pollution of the air causes a drop in the oxygen concentration after the formation of the primary flame A at the primary flame port 11, the secondary flame B at the secondary flame port 8 and a flame C at the main gas burner 3, sensitively reacting to the drop, the primary flame A goes out while the flame C is lengthened due to the shortage of the oxygen. Consequently, as the primary flame A grows unstable, the thermal electromotive force of the first thermocouple 16 begins to reduce while the second thermocouple 17 slightly increases the thermal electromotive force as the flame C grows long. Thus, the difference in the electromotive force between the two thermocouples 16, 17 diminishes so much that a gas electromagnetic safety valve 5 is closed. Thereafter, the supply of gas is halted to ensure safety.
JP11257978A 1978-09-12 1978-09-12 Safety device for combustion Pending JPS5538475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11257978A JPS5538475A (en) 1978-09-12 1978-09-12 Safety device for combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11257978A JPS5538475A (en) 1978-09-12 1978-09-12 Safety device for combustion

Publications (1)

Publication Number Publication Date
JPS5538475A true JPS5538475A (en) 1980-03-17

Family

ID=14590247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11257978A Pending JPS5538475A (en) 1978-09-12 1978-09-12 Safety device for combustion

Country Status (1)

Country Link
JP (1) JPS5538475A (en)

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