JPS57157932A - Gas leakage alarm - Google Patents

Gas leakage alarm

Info

Publication number
JPS57157932A
JPS57157932A JP56043321A JP4332181A JPS57157932A JP S57157932 A JPS57157932 A JP S57157932A JP 56043321 A JP56043321 A JP 56043321A JP 4332181 A JP4332181 A JP 4332181A JP S57157932 A JPS57157932 A JP S57157932A
Authority
JP
Japan
Prior art keywords
gas
inputted
signal generator
signal indicating
temperature
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
JP56043321A
Other languages
Japanese (ja)
Inventor
Junichi Goto
Yasuaki Nukada
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56043321A priority Critical patent/JPS57157932A/en
Publication of JPS57157932A publication Critical patent/JPS57157932A/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
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/18—Detecting fluid leaks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

PURPOSE:To enable to rapidly and surely detect gas leak without being influensed by the state of air flow around a gas apparatus by a method wherein the presence of gas supply to the gas apparatus and the temperature in the neighbourhood of the combustion part of the gas apparatus are detected. CONSTITUTION:When gas flows within a gas flow detecting part 3, an impeller is rotated and the rotation of the impeller is followed by the rotation of a permanent magnet 6. As a result, the signal indicating the presence of gas flow within a gas pipe is issued from a magnetic sensor 10 and inputted in a signal generator circuit 12. On the other hand, the signal indicating temperature in the neightbourhood of the combustion part of the gas apparatus is issued from a temperature sensor 11 and inputted in a signal generator circuit 13. After that, the outputs from the signal generator circuits 12 and 13 are inputted in a decision circuit 14, which decide the presence of gas leak and sends the signal indicating the presence of gas leak to an alarm circuit 15.
JP56043321A 1981-03-25 1981-03-25 Gas leakage alarm Pending JPS57157932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56043321A JPS57157932A (en) 1981-03-25 1981-03-25 Gas leakage alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56043321A JPS57157932A (en) 1981-03-25 1981-03-25 Gas leakage alarm

Publications (1)

Publication Number Publication Date
JPS57157932A true JPS57157932A (en) 1982-09-29

Family

ID=12660540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56043321A Pending JPS57157932A (en) 1981-03-25 1981-03-25 Gas leakage alarm

Country Status (1)

Country Link
JP (1) JPS57157932A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63296198A (en) * 1987-05-28 1988-12-02 Koatsu Gas Hoan Kyokai Automatic cutoff device for leak of gas
EP0565474A1 (en) * 1992-03-10 1993-10-13 D. Francisco Monforte Sanroma Safety system to prevent accidental leakage in gas circuits and receivers
KR100404126B1 (en) * 2000-07-19 2003-11-01 주식회사 경동보일러 Boiler System Have An Airflow Amount Measuring Mean

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921917A (en) * 1972-06-21 1974-02-26
JPS5176644A (en) * 1974-12-26 1976-07-02 Susumu Yagyu GASUKEI HOSOCHI
JPS55140036A (en) * 1979-04-19 1980-11-01 Seihoku Sangyo Kk Protective device for gas leakage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921917A (en) * 1972-06-21 1974-02-26
JPS5176644A (en) * 1974-12-26 1976-07-02 Susumu Yagyu GASUKEI HOSOCHI
JPS55140036A (en) * 1979-04-19 1980-11-01 Seihoku Sangyo Kk Protective device for gas leakage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63296198A (en) * 1987-05-28 1988-12-02 Koatsu Gas Hoan Kyokai Automatic cutoff device for leak of gas
EP0565474A1 (en) * 1992-03-10 1993-10-13 D. Francisco Monforte Sanroma Safety system to prevent accidental leakage in gas circuits and receivers
KR100404126B1 (en) * 2000-07-19 2003-11-01 주식회사 경동보일러 Boiler System Have An Airflow Amount Measuring Mean

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