JPS58112845U

JPS58112845U - Combustion safety device

Info

Publication number: JPS58112845U
Application number: JP713082U
Authority: JP
Inventors: 黒柳　宏昭
Original assignee: 株式会社東芝
Priority date: 1982-01-22
Filing date: 1982-01-22
Publication date: 1983-08-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は燃焼装置の概要を示す図、第２図は従来の燃焼
安全装置を示す回路図、第３図は本考案の燃焼安全装置
の一実施例を示す回路図、第４図は第３図の装置の動作
を示す線図である。１．２・・・電磁弁、３・・・パイロットバーナ、４・
・・メインバーナ、５・・・フレームロッド、６・・・
燃焼安全装置、７・・・変圧器二次側、Ｅ・・・機体ア
ース、Ｓｒｎ・・・平滑回路、Ｇｏ・・・比較器、Ｔｒ
・・・トランジスタ、Ｒｙ・・・リレーコイル、Ｄｆ・
・・微分回路、Ｔｈ・・パサイリスタ。Fig. 1 is a diagram showing an outline of a combustion device, Fig. 2 is a circuit diagram showing a conventional combustion safety device, Fig. 3 is a circuit diagram showing an embodiment of the combustion safety device of the present invention, and Fig. 4 is a circuit diagram showing an embodiment of the combustion safety device of the present invention. FIG. 4 is a diagram showing the operation of the device of FIG. 3; 1.2...Solenoid valve, 3...Pilot burner, 4.
...Main burner, 5...Frame rod, 6...
Combustion safety device, 7...Transformer secondary side, E...Airframe ground, Srn...Smoothing circuit, Go...Comparator, Tr
...transistor, Ry...relay coil, Df.
...Differential circuit, Th...Passyristor.

Claims

[Scope of Claim for Utility Model Registration] 1. In a combustion safety device that detects a misfire based on a decrease in flame detection current of a combustor and closes a fuel supply valve, once the flame detection current decreases, A combustion safety device that maintains the valve in a closed state even if the combustion temperature increases. 2. A flame detection current is received at one input terminal, an input of a predetermined magnitude is received at the other input terminal, and when the input to the one input terminal is greater than the input to the other input terminal, a high level output is generated. a transistor that conducts when the output of the comparator is at a high level; a circuit that generates a pulse when the transistor changes from a conductive state to a non-conductive state; 2. The combustion safety device according to claim 1, further comprising a thyristor that is electrically conductive and short-circuits the one input terminal of the comparator to a low potential point.