KR950025613A

KR950025613A - Fire detector

Info

Publication number: KR950025613A
Application number: KR1019940001886A
Authority: KR
Inventors: 최만형
Original assignee: 최만형; 동방전자산업 주식회사
Priority date: 1994-02-02
Filing date: 1994-02-02
Publication date: 1995-09-18
Also published as: KR100321101B1

Abstract

본 발명은 화재시에 연도및 온도를 검출하여 경보를 발신하는 화재감지기에 관한 것으로 특히, 온도상승에 따른 연기의 검출감도를 자동 설정하여 화재시에 확실히 경보를 발신하는 화재감지기에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fire detector that sends out an alarm by detecting flue and temperature during a fire, and more particularly, to a fire detector that automatically sets a detection sensitivity of smoke according to a temperature rise and reliably sends an alarm in a fire.

감도설정부(2)는 감도설정용센서인 더미스터(TH1)와 연기감지 비교기(OP2)의 인가 전원을 분배하는 전압분배저항(R7, R8)으로 구성되고, 연기감지 화재판단부(3)는 연기감지 비교기(OP2)와 출력저항(R6)으로 구성되고, 온도감지 화재판단부(4)는 온도감지비교기(OP3)와 전압분배저항(R4, R5)과 출력저항(R3)으로 구성되어 있다.The sensitivity setting unit 2 is composed of voltage distribution resistors R7 and R8 for distributing the applied power of the dummyster TH1, which is a sensitivity setting sensor, and the smoke detection comparator OP2, and the smoke detection fire determination unit 3. Is composed of smoke detection comparator (OP2) and output resistance (R6), temperature sensing fire determination unit (4) is composed of temperature sensing comparator (OP3), voltage distribution resistors (R4, R5) and output resistance (R3). have.

연기감지비교기(OP2)는 더미스터(TH1)의 온도에 따른 저항값의 변화로 감도가 자동 설정되고 이때 감도에 따른 연기검출전압(D)에 의해 화재스위칭부(6)는 동작하게 된다.The sensitivity of the smoke detector comparator OP2 is automatically set by the change of the resistance value according to the temperature of the dummyster TH1, and the fire switching unit 6 is operated by the smoke detection voltage D according to the sensitivity.

한편 더미스터(TH1)에의한 검출된 온도가 임의의 온도설정 이상이 되면 온도감지비교기(OP3)의 출력전압으로 화재스위칭부(6)를 동작시킨다.On the other hand, when the detected temperature by the dummyster TH1 becomes more than a predetermined temperature setting, the fire switching unit 6 is operated with the output voltage of the temperature sensing comparator OP3.

상기 회로에의해 얻어진 그래프는 도면 제6도의 실시예와 같으며 이는 온도검출용센서인 더미스터(TH1)의 온도변화에 따른 저항값의 변화로 연기검출비교기(OP2)의 감도설정전압을 자동적으로 변화시키게 된다.The graph obtained by the circuit is the same as the embodiment of FIG. 6, which automatically changes the sensitivity setting voltage of the smoke detection comparator OP2 due to the change of the resistance value according to the temperature change of the dummy sensor TH1, which is a temperature detection sensor. Will change.

그러므로 온도검출과 동시에 감도설정을하여 비화재의 경보를 방지하고 화재시에는 조기에 경보를 울릴수 있는 효과가 있다.Therefore, it is effective to prevent alarm of non-fire by setting sensitivity at the same time as temperature detection and sound early in case of fire.

Description

Fire detector

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 화재 감지기에 대한 전체회로도이다,1 is an overall circuit diagram of the fire detector of the present invention,

제2도는 온도검출화재 판단회로도이다,2 is a circuit diagram of temperature detection fire.

제3도는 연기 검출화재 판단회로도이다.3 is a smoke detection fire determination circuit diagram.

Claims

The thermal sensor and the smoke sensor are housed in one housing, and the output of the thermal sensor automatically adjusts the intensity of the smoke detector. When the ambient temperature of the detector is below a certain temperature, the smoke detector is automatically set above the appropriate smoke concentration. A fire detector, comprising: setting a sensitivity and automatically setting the sensitivity of the smoke detector by raising the sensitivity of the smoke detector to a constant level as the ambient temperature of the detector rises.

The fire detector according to claim 1, wherein the thermal detector is configured to operate when the temperature of the detector continues to rise to be higher than a temperature arbitrarily set between 60 ° C and 150 ° C.

※ Note: The disclosure is based on the initial application.