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JPS57202420A - Safety control circuit for gas water heater - Google Patents

Safety control circuit for gas water heater

Info

Publication number
JPS57202420A
JPS57202420A JP56085302A JP8530281A JPS57202420A JP S57202420 A JPS57202420 A JP S57202420A JP 56085302 A JP56085302 A JP 56085302A JP 8530281 A JP8530281 A JP 8530281A JP S57202420 A JPS57202420 A JP S57202420A
Authority
JP
Japan
Prior art keywords
water heater
detecting circuit
transistor
control circuit
thyristor
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.)
Granted
Application number
JP56085302A
Other languages
Japanese (ja)
Other versions
JPS6362658B2 (en
Inventor
Mitsuyasu Watanabe
Yasushi Suzuki
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 Global Life Solutions Inc
Original Assignee
Hitachi Heating Appliances 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 Hitachi Heating Appliances Co Ltd filed Critical Hitachi Heating Appliances Co Ltd
Priority to JP56085302A priority Critical patent/JPS57202420A/en
Publication of JPS57202420A publication Critical patent/JPS57202420A/en
Publication of JPS6362658B2 publication Critical patent/JPS6362658B2/ja
Granted 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
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F23N2005/182—Air flow switch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/02—Measuring filling height in burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/04—Prepurge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/02—Ventilators in stacks

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 obviate a hazard such as gas ejection, by constituting a control circuit such that a series of operations as a water heater is started after confirming a normal operation of a spark detecting circuit and a flame detecting circuit. CONSTITUTION:After an operation switch 14 is turned ON, a transistor 31 turns ON in case a spark detecting circuit 82 is abnormal, and a transistor 49 turns ON in case a flame detecting circuit 83 is abnormal. As a result, transistors 52 and 55 turn ON, and no signal is applied to a gate of a thyristor 56, whereby the thyristor 56 is left in an OFF state, a relay 9 is not excited, and and exhaust fan 6 is not brought to an operation. Thereby, an air pressure switch 60 is not released and a prepurge timer circuit 85 does not actuate, and as a result, an igniter 7 does not work, a transistor 50 does not turn ON, a relay 11 is not excited, and gas is not supplied. This prevents a water heater from actuating which results in ensuring safety even if a failure happens in either one of the two circuits.
JP56085302A 1981-06-03 1981-06-03 Safety control circuit for gas water heater Granted JPS57202420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56085302A JPS57202420A (en) 1981-06-03 1981-06-03 Safety control circuit for gas water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56085302A JPS57202420A (en) 1981-06-03 1981-06-03 Safety control circuit for gas water heater

Publications (2)

Publication Number Publication Date
JPS57202420A true JPS57202420A (en) 1982-12-11
JPS6362658B2 JPS6362658B2 (en) 1988-12-05

Family

ID=13854792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56085302A Granted JPS57202420A (en) 1981-06-03 1981-06-03 Safety control circuit for gas water heater

Country Status (1)

Country Link
JP (1) JPS57202420A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8521400B2 (en) 2010-06-22 2013-08-27 Purpose Company Limited Combustion apparatus and method for combustion control

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5227373A (en) * 1975-08-27 1977-03-01 Hitachi Ltd Cooling equipment of electrical parts
JPS537643A (en) * 1976-06-02 1978-01-24 Valles Quimica Production of alphaa*44 alkylphenyl* alkanoic acid
JPS5528424A (en) * 1978-08-17 1980-02-29 Mitsubishi Electric Corp Combustion controller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5227373A (en) * 1975-08-27 1977-03-01 Hitachi Ltd Cooling equipment of electrical parts
JPS537643A (en) * 1976-06-02 1978-01-24 Valles Quimica Production of alphaa*44 alkylphenyl* alkanoic acid
JPS5528424A (en) * 1978-08-17 1980-02-29 Mitsubishi Electric Corp Combustion controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8521400B2 (en) 2010-06-22 2013-08-27 Purpose Company Limited Combustion apparatus and method for combustion control

Also Published As

Publication number Publication date
JPS6362658B2 (en) 1988-12-05

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