JPS59174690U - Flame detector for automatic fire extinguishing system for kitchen fires - Google Patents
Flame detector for automatic fire extinguishing system for kitchen firesInfo
- Publication number
- JPS59174690U JPS59174690U JP6807083U JP6807083U JPS59174690U JP S59174690 U JPS59174690 U JP S59174690U JP 6807083 U JP6807083 U JP 6807083U JP 6807083 U JP6807083 U JP 6807083U JP S59174690 U JPS59174690 U JP S59174690U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- outputs
- fire extinguishing
- circuit
- output signal
- 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
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
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
第1図は従来例を示す厨房火災用自動消火装置の全体概
略構成図、第2図ないし第7図は本考案の実施例を示し
、第2図は焦電型赤外センサの取付状態を示す図、第3
図は制御回路の内部構成を示すブロック図、第4図イ1
口およびハは焦電型赤外センサの出力信号の波形図、第
5図は帯域フィルタを通過したのちの焦電型赤外センサ
の出力信号の波形図、第6図イ〜トは非火災時における
制御回路各部の出力波形図、第7図イ〜トは火災時にお
ける第6図イ〜ト相当図である。
1・・・ガスこんろ(厨房装置)、4・・・自動消火装
置ζ6・・・鍋、7・・・焦電型赤外センサ、12・・
・帯域増幅回路(帯域フィルタ)、13・・・整流回路
、14・・・平滑回路、15・・・しきい値設定回路、
16・・・比較器、17・・・タイマ回路。Fig. 1 is an overall schematic diagram of the conventional automatic fire extinguishing system for kitchen fires, Figs. 2 to 7 show embodiments of the present invention, and Fig. 2 shows how the pyroelectric infrared sensor is installed. Figure shown, 3rd
The figure is a block diagram showing the internal configuration of the control circuit.
Figure 5 is a waveform diagram of the output signal of the pyroelectric infrared sensor after passing through a bandpass filter, and Figure 6 is a waveform diagram of the output signal of the pyroelectric infrared sensor. The output waveform diagrams of various parts of the control circuit at the time of fire, FIG. 7 I to I are equivalent to FIG. 1... Gas stove (kitchen equipment), 4... Automatic fire extinguishing device ζ6... Pot, 7... Pyroelectric infrared sensor, 12...
・Band amplifier circuit (band filter), 13... Rectifier circuit, 14... Smoothing circuit, 15... Threshold setting circuit,
16... Comparator, 17... Timer circuit.
Claims (1)
以上の火炎を検知するように配設され、火炎が所定高さ
以上になると火災信号を出力し、火炎が所定高さよりも
縮小すると消炎信号を出力する焦電型赤外センサ7と、
火炎のゆらぎの周波数を含む狭帯域幅で上記焦電型赤外
センサ7の出力信号をろ波する帯域フィルタ12と、該
帯域フィルタ12を通過した出力信号を整流する整流回
路13と、該整流回路13の出力信号を平滑する平滑回
路14と、該平滑回路14の出力信号を基準値と比較し
て基準値以上のときにはカウント指令信号を出力する一
方、基準値より小さいときにはリセット信号を出力する
比較器16と、該比較器16のカウント指令信号を受け
て設定時間Tをカウントし、カウント完了時に消火指令
信号を出力する一方、上記比較器16のリセット信号を
受けてカウントをクリアするタイマ回路17とを備えた
ことを特徴とする厨房火災用自動消火装置の火炎検知器
。It is arranged on the side of the kitchen device 1 to detect flames of a predetermined height or higher generated from the kitchen device 1, and outputs a fire signal when the flame reaches a predetermined height or higher. a pyroelectric infrared sensor 7 that outputs an extinguishing signal when reduced;
A bandpass filter 12 that filters the output signal of the pyroelectric infrared sensor 7 with a narrow bandwidth including the frequency of flame fluctuations, a rectifier circuit 13 that rectifies the output signal that has passed through the bandpass filter 12, and the rectifier. A smoothing circuit 14 smoothes the output signal of the circuit 13, and compares the output signal of the smoothing circuit 14 with a reference value, and outputs a count command signal when it is equal to or greater than the reference value, while outputting a reset signal when it is smaller than the reference value. A comparator 16, and a timer circuit that receives a count command signal from the comparator 16, counts a set time T, outputs a fire extinguishing command signal when the count is completed, and clears the count upon receiving a reset signal from the comparator 16. 17. A flame detector for an automatic fire extinguishing system for kitchen fires, characterized by comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6807083U JPS59174690U (en) | 1983-05-06 | 1983-05-06 | Flame detector for automatic fire extinguishing system for kitchen fires |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6807083U JPS59174690U (en) | 1983-05-06 | 1983-05-06 | Flame detector for automatic fire extinguishing system for kitchen fires |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59174690U true JPS59174690U (en) | 1984-11-21 |
JPH0241739Y2 JPH0241739Y2 (en) | 1990-11-07 |
Family
ID=30198255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6807083U Granted JPS59174690U (en) | 1983-05-06 | 1983-05-06 | Flame detector for automatic fire extinguishing system for kitchen fires |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59174690U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6254400A (en) * | 1985-09-02 | 1987-03-10 | 関 広 | Compound fire alarm |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5510105U (en) * | 1978-07-01 | 1980-01-23 | ||
JPS5525862A (en) * | 1978-08-14 | 1980-02-23 | Fujitsu Ltd | Major-minor loop type bubble memory |
JPS56110021A (en) * | 1980-02-04 | 1981-09-01 | Kureha Chem Ind Co Ltd | Take-out circuit for pyroelectric signal |
JPS56137293U (en) * | 1980-03-10 | 1981-10-17 | ||
JPS57112614A (en) * | 1980-08-27 | 1982-07-13 | Honeywell Inc | Flame monitoring apparatus for burner |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5510105B2 (en) * | 1974-07-12 | 1980-03-13 |
-
1983
- 1983-05-06 JP JP6807083U patent/JPS59174690U/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5510105U (en) * | 1978-07-01 | 1980-01-23 | ||
JPS5525862A (en) * | 1978-08-14 | 1980-02-23 | Fujitsu Ltd | Major-minor loop type bubble memory |
JPS56110021A (en) * | 1980-02-04 | 1981-09-01 | Kureha Chem Ind Co Ltd | Take-out circuit for pyroelectric signal |
JPS56137293U (en) * | 1980-03-10 | 1981-10-17 | ||
JPS57112614A (en) * | 1980-08-27 | 1982-07-13 | Honeywell Inc | Flame monitoring apparatus for burner |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6254400A (en) * | 1985-09-02 | 1987-03-10 | 関 広 | Compound fire alarm |
Also Published As
Publication number | Publication date |
---|---|
JPH0241739Y2 (en) | 1990-11-07 |
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