KR970070757A

KR970070757A - Gas supply cutoff device and method thereof

Info

Publication number: KR970070757A
Application number: KR1019960014328A
Authority: KR
Inventors: 이해규
Original assignee: 강원석; 린나이코리아 주식회사
Priority date: 1996-04-30
Filing date: 1996-04-30
Publication date: 1997-11-07

Abstract

본 발명은 가스기구의 가스공급 차단장치 및 그 방법에 관한 것으로 특히, 열전대(5)의 출력단자를 마그네틱 파워 유니트(6)의 전원공급단자에 연결하여 열전대(5)의 기전력에 의해 마그네틱 파워 유니트(6)내의 마그네틱 밸브가 선택적으로 구동되게 하고, 상기 마이컴(4)의 출력단과 마그네틱 파워 유니트(6)의 제어단자 사이에는 역전압 발생부(7)를 개재하여 마이컴(4)에서 조리시간 설정 타이머(3)나 이상온도 감지센서(2)로부터 소정의 출력신호를 입력 받았을시 즉시 마그네틱 파워 유니트(6)에 역기전력을 발생시켜 가스의 공급이 자동차단되게 하며, 또 열전대(5)의 출력단과 마이컴(4) 사이에 전압증폭부(8)를 부가시켜 상기 열전대(5)에서 출력되는 기전력이 상기 전압증폭부(8)를 통해 일정레벨로 증폭되어 마이컴(4)에 인가되게 하고, 마이컴(4)의 출력단에는 가스공급이 차단되었을시 이를 경보하는 불꺼짐 경보부(9)를 개재하여 주므로써, 첫째로 사용중 마그네틱파워 유니트의 작동에 필요한 건전지의 전압이 불필요하게 소모되는 것을 방지할 수 있고, 둘째로 가스의 누출로 인한 안전사고의 발생을 미연에 방지할 수 있으며, 세째로 사용자가 불꽃 꺼짐상태를 쉽게 알 수 있는 등 매우 유용한 것이다.The output terminal of the thermocouple 5 is connected to the power supply terminal of the magnetic power unit 6 and is connected to the magnetic power unit 5 by the electromotive force of the thermocouple 5. [ The microcomputer 4 selectively sets the cooking time between the output terminal of the microcomputer 4 and the control terminal of the magnetic power unit 6 through the reverse voltage generating unit 7, When a predetermined output signal is received from the timer 3 or the abnormal temperature sensor 2, a counter electromotive force is immediately generated in the magnetic power unit 6 so that the supply of the gas is cut off and the output terminal of the thermocouple 5 The voltage amplifying unit 8 is added between the microcomputer 4 so that the electromotive force outputted from the thermocouple 5 is amplified to a certain level through the voltage amplifying unit 8 to be applied to the microcomputer 4, 4) Output Off alarm unit 9 for alarming the supply of gas when the gas supply is interrupted. Thus, it is possible to prevent unnecessary consumption of the battery voltage required for the operation of the magnetic power unit during use, and secondly, It is possible to prevent the occurrence of safety accidents due to leakage, and thirdly, it is very useful that the user can easily recognize the state of flame off.

Description

Gas supply cutoff device and method thereof

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제5도는 본 발명 방법의 일 실시예를 설명하기 위한 플로우차트, 제6도는 본 발명 방법의 다른 실시예를 설명하기 위한 플로우차트.FIG. 5 is a flowchart for explaining an embodiment of the method of the present invention, and FIG. 6 is a flowchart for explaining another embodiment of the method of the present invention.

Claims

An abnormal temperature detection sensor (2) for detecting the bottom surface temperature of the cooking container; A cooking time setting timer (3) set by a user; A microcomputer 4 for performing an overall control function of the gas appliance; A thermocouple 5 for changing the gas combustion heat to an electromotive force; A gas appliance comprising a magnetic power unit (6) for controlling gas supply to a burner, wherein an output terminal of the thermocouple (5) is connected to a power supply terminal of a magnetic power unit (6) The microcomputer 4 is controlled to selectively drive the magnetic valve in the magnetic power unit 6 through the reverse voltage generating unit 7 between the output terminal of the microcomputer 4 and the control terminal of the magnetic power unit 6. [ When a predetermined output signal is received from the cooking time setting timer 3 or the abnormal temperature sensor 2, a counter electromotive force is immediately generated in the magnetic power unit 6 so that the supply of gas is cut off. A gas supply cutoff device for a gas appliance.

The method of claim 1, wherein a voltage amplifying unit (8) is provided between the output terminal of the thermocouple (5) and the microcomputer (4), so that the electromotive force output from the thermocouple (5) To be supplied to the microcomputer (4).

The gas supply cut-off device according to claim 1, wherein an output terminal of the microcomputer (4) is connected to an off-alarm unit (9) for alarming the gas supply when the gas supply is interrupted.

When the magnetic power unit 6 is driven because the electromotive force output from the thermocouple 5 is equal to or higher than a certain level due to ignition of the gas, the output state of the abnormal temperature sensor 2 and the cooking time setting timer 3 is continuously detected And a counter electromotive force is generated in the magnetic power unit (6) through the reverse voltage generating unit (7) when the abnormality temperature is detected in the cooking vessel or the cooking time is elapsed. A method for cutting off gas supply to an apparatus.

5. The cooking apparatus according to claim 4, wherein if the abnormal temperature is not detected as a result of detection through the abnormal temperature sensor (2) and the cooking time setting timer (3) and the cooking set time has not elapsed, the electromotive force of the thermocouple (5) If the electromotive force of the thermocouple 5 drops below a predetermined level even though the abnormality temperature is not detected and the cooking set time has not elapsed, it is notified that the fire is turned off through the fire alarm 9, And the supply of the gas is interrupted.

※ Note: It is disclosed by the contents of the first application.