JPS6470616A - Combustion safety control circuit - Google Patents

Combustion safety control circuit

Info

Publication number
JPS6470616A
JPS6470616A JP62226374A JP22637487A JPS6470616A JP S6470616 A JPS6470616 A JP S6470616A JP 62226374 A JP62226374 A JP 62226374A JP 22637487 A JP22637487 A JP 22637487A JP S6470616 A JPS6470616 A JP S6470616A
Authority
JP
Japan
Prior art keywords
level
becomes
kept
state
control circuit
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
JP62226374A
Other languages
Japanese (ja)
Inventor
Mitsuo Nishigori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62226374A priority Critical patent/JPS6470616A/en
Publication of JPS6470616A publication Critical patent/JPS6470616A/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
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • F23N5/203—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/06—Postpurge

Landscapes

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

Abstract

PURPOSE:To complete a predetermined scavenging action and to improve a safety characteristic in a combustion safety controlling circuit for a hot water boiler and the like by a method wherein a temperature adjusting unit can be kept forcedly at its OFF state during a post-purging period even if a starting signal is generated. CONSTITUTION:In this control circuit, a fuel supplying signal EV is kept at 'false' i.e. 'H' level during post-purging period, and a blower driving signal FM is kept at 'false' level, i.e. 'L' level. Accordingly, a voltage at a negative input terminal of a comparator 6 becomes higher than a reference voltage and an output of the comparator 6 becomes an 'L' level. Therefore, an output voltage of a thermistor 7 becomes an 'L' level, resulting in that it gives suspectedly a state in which a temperature of the thermistor 7 is increased. Accordingly, a temperature adjusting function within LSI 1 becomes an 'OFF' state and then operation of the igniter unit continues to be terminated during a postpurging period.
JP62226374A 1987-09-11 1987-09-11 Combustion safety control circuit Pending JPS6470616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62226374A JPS6470616A (en) 1987-09-11 1987-09-11 Combustion safety control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62226374A JPS6470616A (en) 1987-09-11 1987-09-11 Combustion safety control circuit

Publications (1)

Publication Number Publication Date
JPS6470616A true JPS6470616A (en) 1989-03-16

Family

ID=16844129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62226374A Pending JPS6470616A (en) 1987-09-11 1987-09-11 Combustion safety control circuit

Country Status (1)

Country Link
JP (1) JPS6470616A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015096778A (en) * 2013-11-15 2015-05-21 株式会社コロナ Warm air heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015096778A (en) * 2013-11-15 2015-05-21 株式会社コロナ Warm air heater

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