JPS57157934A - Pilot flame safety apparatus - Google Patents

Pilot flame safety apparatus

Info

Publication number
JPS57157934A
JPS57157934A JP4173281A JP4173281A JPS57157934A JP S57157934 A JPS57157934 A JP S57157934A JP 4173281 A JP4173281 A JP 4173281A JP 4173281 A JP4173281 A JP 4173281A JP S57157934 A JPS57157934 A JP S57157934A
Authority
JP
Japan
Prior art keywords
output
ignited
armature
pilot burner
attracted
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
JP4173281A
Other languages
Japanese (ja)
Inventor
Kenji Tsuchiya
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.)
ISHIZUKA DENSHI KK
Original Assignee
ISHIZUKA DENSHI KK
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 ISHIZUKA DENSHI KK filed Critical ISHIZUKA DENSHI KK
Priority to JP4173281A priority Critical patent/JPS57157934A/en
Publication of JPS57157934A publication Critical patent/JPS57157934A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F23Q9/12—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame
    • F23Q9/14—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame using electric means, e.g. by light-sensitive elements

Landscapes

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

Abstract

PURPOSE:To improve the operability and the safety, by retaining an armature of an electronmagnetic valve in the attracted state even when a pressing force on a knob is released immediately after a pilot burner is ignited, and causing the armature not to be attracted if the pilot burner is not ignited. CONSTITUTION:When the pilot burner is ignited, a thermocouple 28 is heated, and its output is gradually increased, and the change of the output is detected by a differential circuit 31, and is compared by a comparator 33. For a prescribed period after the start of heating, since the output of the thermocouple 28 is gradually increased, the output of the comparator 33 becomes a L level to turn a transistor 25 on, and a current is passed to a coil 27 so that the armature is kept attracted. After a prescribed period, the comparator 33 is reversed, and while the transisters 25, 23 are turned off, by the output of the thermocouple 28 a current is passed to the coil so that the armature is kept attracted. If the pilot burner is not ignited, the transistor 25 is not turned on, and therefore a raw gas would not be discharged.
JP4173281A 1981-03-24 1981-03-24 Pilot flame safety apparatus Pending JPS57157934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4173281A JPS57157934A (en) 1981-03-24 1981-03-24 Pilot flame safety apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4173281A JPS57157934A (en) 1981-03-24 1981-03-24 Pilot flame safety apparatus

Publications (1)

Publication Number Publication Date
JPS57157934A true JPS57157934A (en) 1982-09-29

Family

ID=12616589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4173281A Pending JPS57157934A (en) 1981-03-24 1981-03-24 Pilot flame safety apparatus

Country Status (1)

Country Link
JP (1) JPS57157934A (en)

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