JPS6027901B2 - gas safety device - Google Patents
gas safety deviceInfo
- Publication number
- JPS6027901B2 JPS6027901B2 JP14311078A JP14311078A JPS6027901B2 JP S6027901 B2 JPS6027901 B2 JP S6027901B2 JP 14311078 A JP14311078 A JP 14311078A JP 14311078 A JP14311078 A JP 14311078A JP S6027901 B2 JPS6027901 B2 JP S6027901B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- gas
- outputs
- solenoid valve
- 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.)
- Expired
Links
Landscapes
- Feeding And Controlling Fuel (AREA)
- Regulation And Control Of Combustion (AREA)
Description
【発明の詳細な説明】
本発明は、ガス安全装置に関するもので、一つのガス供
給源、例えばプロパンガスの場合はガスボンベの出口端
部より、都市ガスの場合は屋外配管部より下流のガス供
給系全体を一括して安全制御するガス安全装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas safety device, which includes a gas supply source downstream from the outlet end of a gas cylinder in the case of propane gas, or from an outdoor piping section in the case of city gas. This relates to a gas safety device that collectively controls the safety of the entire system.
図中、１がガス供給路で、このガス供給路１の下流側は
分岐管２ａ，２ｂ，２ｃ……に分岐され、各分岐管２ａ
，２ｂ，２ｃにはガスキ全３ａ，３ｂ，３ｃ……が配さ
れる。In the figure, 1 is a gas supply path, and the downstream side of this gas supply path 1 is branched into branch pipes 2a, 2b, 2c..., and each branch pipe 2a
, 2b, 2c, gas skis 3a, 3b, 3c, . . . are arranged.
そして各ガス栓３ａ，３ｂ，３ｃ・・・・・・には必要
に応じゴムホース４を介してガス器具Ｆ１，Ｆ２，Ｆ３
…・・・が連結される。上記ガス供給路１の上流部位に
は、通電時のみ該ガス供給路１を開いて下流側にガスを
供給する電磁弁５を配している。Gas appliances F1, F2, F3 are connected to each gas valve 3a, 3b, 3c, etc. via a rubber hose 4 as necessary.
... are concatenated. A solenoid valve 5 is disposed upstream of the gas supply path 1 and opens the gas supply path 1 only when energized to supply gas to the downstream side.
また、該電磁弁５の下流側のガス供給路１部位には該ガ
ス供給路１内のガス圧に応動してガス圧が所定値以下と
なるとＯＮ（通電状態）となる圧力スイッチ６を配して
いる。この圧力スイッチ６は、具体的構造を図示してい
ないが、一面をガス供給路１内に面したダイアフラムの
上下動によりスイッチが開閉される従来公知なもの等が
利用できる。また、上記ガス器具Ｆ１，Ｆ２，Ｆ３……
には、器具栓７を閉じたときＯＮとなるコックスイッチ
ＳＩと、フレームロッドＳ２と、該コックスイッチＳＩ
とフレームロッドＳ２とに連結され器具栓７が開かれる
と器具栓開信号を出力する出力端子１３と器具栓７が開
で不燃のときに異常信号を出力する出力端子１１とを有
したアンプ８とを各々配してある。Further, a pressure switch 6 is disposed in a portion of the gas supply path 1 on the downstream side of the solenoid valve 5, which responds to the gas pressure in the gas supply path 1 and turns ON (energized state) when the gas pressure falls below a predetermined value. are doing. Although the specific structure of this pressure switch 6 is not shown in the drawings, a conventionally known pressure switch can be used in which the switch is opened and closed by the vertical movement of a diaphragm whose one side faces into the gas supply path 1. In addition, the above gas appliances F1, F2, F3...
includes a cock switch SI that turns on when the appliance stopper 7 is closed, a frame rod S2, and the cock switch SI.
and frame rod S2, and has an output terminal 13 that outputs an appliance tap open signal when the appliance tap 7 is opened, and an output terminal 11 that outputs an abnormal signal when the appliance tap 7 is open and non-flammable. are arranged respectively.
上記コックスイッチＳＩは器具栓７の回動部をスイッチ
操作片とし該器具絵７の開閉でＯＮ・ＯＦＦされるもの
を使用すればよく、またフレームロッドＳ２は炎中に挿
入した電極の電流が炎の有無によって変化することによ
り燃焼の有無を検知する従来公知なものが使用できる。
なお、上記アンプ８は、器具栓７が閉じコックスイッチ
ＳＩがＯＮのときは、フレームロッドＳ２で不燃が検知
されてもこの不燃検知の信号はコックスイッチＳＩ側の
回路で消去され、器具栓７が開で不燃のときのみ異常信
号を出力するようになっており、その具体的構成は第２
図に示すごとくなっている。第２図例は、ガス器具ＦＩ
にフレームロッド電源入力端子１４を連結し、炎を介し
たフレームロッドＳ２はＥＥＴトランジスター５のゲー
トに連結し、該ＥＥＴトランジスタ１５で燃焼の有無が
検出される従来公知例を利用している。なお、該ＥＥＴ
トランジスタ１５のドレインには、トランジスタ１６と
、トランジスタ１７とを図示のごとく連結し、燃焼時は
出力端子１１がハイレベル（出力端子１１，１３は入力
端子２９，３川こ連結されるものである。）となり、不
燃のときローレベルとなって異常信号が出力されるよう
になっている。またコックスイッチＳＩの一方端はトラ
ンジスタ１８のベースに図示のごとく連結されることで
、器具栓７を開いてコックスイッチＳＩがＯＦＦとなる
と出力端子１３がローレベルとなって器具栓開信号が得
られる。ＥＥＴトランジスタ１５とその回路定数の選定
によりコックスイッチＳＩがＯＮのときはトランジスタ
１７を作動させないようにしておく。また、このコック
スイッチＳＩがＯＮの場合、フレームロッドＳ２よりの
信号出力を発生させないか消去する方法は従来技術で種
々可能であるため図示例に限定されるものではない。さ
らに、本発明ガス安全装置は、上記圧力スイッチ６と、
各アンプ８とからの信号により、前記電磁弁５を開閉制
御する制御盤９を有してなり、この制御盤９には、異常
信号処理回路１８と、コック信号処理回路１９と、圧力
信号処理回路２０と、禁止回路２１と、警報表示回路２
２と、電磁弁電源回路２３とを配してなる。The cock switch SI may be one that uses the rotating part of the appliance stopper 7 as a switch operation piece and is turned on and off by opening and closing the appliance 7, and the flame rod S2 can be used to control the current of the electrode inserted into the flame. A conventionally known device that detects the presence or absence of combustion by detecting a change depending on the presence or absence of flame can be used.
Note that in the amplifier 8, when the appliance tap 7 is closed and the cock switch SI is ON, even if non-flammability is detected at the frame rod S2, the signal of this non-flammability detection is erased by the circuit on the cock switch SI side, and the appliance tap 7 is turned on. It is designed to output an abnormal signal only when it is open and non-flammable, and its specific configuration is explained in the second section.
It is as shown in the figure. The example in Figure 2 is a gas appliance FI
The flame rod power input terminal 14 is connected to the flame rod S2, and the flame rod S2 through the flame is connected to the gate of the EET transistor 5, and the presence or absence of combustion is detected by the EET transistor 15 using a conventionally known example. In addition, the EET
A transistor 16 and a transistor 17 are connected to the drain of the transistor 15 as shown in the figure, and during combustion, the output terminal 11 is at a high level (the output terminals 11 and 13 are connected to the input terminals 29 and 3). ), and when it is non-combustible, it becomes low level and an abnormal signal is output. Further, one end of the cock switch SI is connected to the base of the transistor 18 as shown in the figure, so that when the appliance tap 7 is opened and the cock switch SI is turned OFF, the output terminal 13 becomes a low level and an appliance tap open signal is obtained. It will be done. By selecting the EET transistor 15 and its circuit constants, the transistor 17 is not operated when the cock switch SI is ON. Further, when the cock switch SI is ON, there are various methods of not generating or eliminating the signal output from the frame rod S2 using conventional techniques, so the method is not limited to the illustrated example. Furthermore, the gas safety device of the present invention includes the pressure switch 6;
It has a control panel 9 that controls the opening and closing of the solenoid valve 5 according to signals from each amplifier 8, and this control panel 9 includes an abnormality signal processing circuit 18, a cock signal processing circuit 19, and a pressure signal processing circuit. Circuit 20, prohibition circuit 21, and alarm display circuit 2
2 and a solenoid valve power supply circuit 23.
上記異常信号処理回路１８は、前記アンプ８の各出力端
子１１に連結される異常信号の入力端子２９より異常信
号が入力されると、該異常信号はＮＯＴ回路６１で反転
した後、抵抗６２とコンデンサ６３よりなるタイマで所
定時間（実施例では３秒）遅らせて電磁弁電源回路２３
へ制御信号を出力する異常信号回路ＣＩからなる。In the abnormal signal processing circuit 18, when an abnormal signal is inputted from an abnormal signal input terminal 29 connected to each output terminal 11 of the amplifier 8, the abnormal signal is inverted by a NOT circuit 61 and then connected to a resistor 62. The solenoid valve power supply circuit 23 is delayed by a predetermined time (3 seconds in the embodiment) using a timer consisting of a capacitor 63.
It consists of an abnormal signal circuit CI that outputs a control signal to.
上記コック信号処理回路１９は、アンプ８の各出力端子
１３に連結される入力端子３０‘こ器具栓開信号が入力
すると電磁弁電源回路２３へ制御信号を出力する始動信
号回路Ｃ２と、抵抗６５とコンデンサ６６とからなるタ
イマを介して器具栓開信号の入力後所定時間後に圧力ス
イッチ６よりの圧力低下信号の入力があった場合には電
磁弁電源回路２３と警報表示回路２２とへ制御信号を出
力する始動時ガス漏れ信号回路Ｃ３と、抵抗７０とコン
デンサ７１とからなるタイマを介して器具栓開信号の入
力が無くなってから所定時間内に圧力スイッチ６よりの
圧力低下信号が入力されると禁止回路２１への制御信号
を出力する使用後ガス漏れ信号回路Ｃ４とからなる。The cock signal processing circuit 19 includes an input terminal 30' connected to each output terminal 13 of the amplifier 8, and a starting signal circuit C2 that outputs a control signal to the electromagnetic valve power supply circuit 23 when an appliance tap opening signal is input, and a resistor 65. If a pressure drop signal is input from the pressure switch 6 after a predetermined period of time after the appliance tap open signal is input via a timer consisting of a capacitor 66 and a timer, a control signal is sent to the solenoid valve power supply circuit 23 and alarm display circuit 22. A pressure drop signal from the pressure switch 6 is input within a predetermined time after the appliance tap open signal is no longer input via a gas leak signal circuit C3 at startup that outputs the gas leak signal circuit C3, and a timer consisting of a resistor 70 and a capacitor 71. and an after-use gas leakage signal circuit C4 that outputs a control signal to the inhibition circuit 21.
なお、該始動信号回路Ｃ２は、該器具栓開信号で入力端
子３０がローレベルとなることでガス使用開始を検知し
、この器具栓開信号はＮＯＴ回路６４で反転して電磁弁
電源回路２３へ制御信号を出力するものである。また、
始動時ガス漏れ信号回路Ｃ３は、上記ＮＯＴ回路６４の
出力端を抵抗６５とコンデンサ６６との組合せよりなり
信号を所定時間（例えば１秒）遅らせるタイマを介して
ＮＡＮＤ回路６７の一方側入力端に連結し、このＮＡＮ
Ｄ回路６７の他方側入力端には圧力信号処理回路２０の
出力端を連結し、かつＮＡＮＤ回路６７の出力はＮＯＴ
回路６８で反転するようになしてある。さらにまた、使
用後ガス漏れ信号回路Ｃ４は、前記ＮＯＴ回路６４の入
力端側をＮＡＮＤ回路７３の一方側入力端に連結し、こ
のＮＡＮＤ回路７３の他方側入力端には圧力信号処理回
路２０の出力端を連結し、かつＮＯＴ回路６４の入力端
側は抵抗７０とコンデンサ７１との組合せによりなり信
号を所定時間（例えば３分）遅らせるタイマとＮＯＴ回
路７２とを介してＮＡＮＤ回路７５の一方側入力端に連
結し、一方ＮＡＮＤ回路７３の出力端はＮＯＴ回路７４
を介して該ＮＡＮＤ回路７５の他方側入力端に連結して
なる。上記圧力信号処理回路２０は、圧力スイッチ６よ
り圧力低下信号が入力すると、前述のごとく該圧力低下
信号をコック信号処理回路１９へ出力すると共に警報表
示回路２２へも制御信号を出力する圧力信号回路Ｃ５か
らなる。The start signal circuit C2 detects the start of gas use when the input terminal 30 becomes low level with the appliance tap open signal, and this appliance tap open signal is inverted by the NOT circuit 64 and sent to the solenoid valve power supply circuit 23. It outputs a control signal to. Also,
The starting gas leak signal circuit C3 connects the output terminal of the NOT circuit 64 to one input terminal of the NAND circuit 67 through a timer which is made up of a combination of a resistor 65 and a capacitor 66 and delays the signal by a predetermined period of time (for example, 1 second). Concatenate this NAN
The output terminal of the pressure signal processing circuit 20 is connected to the other side input terminal of the D circuit 67, and the output of the NAND circuit 67 is NOT
The circuit 68 inverts the signal. Furthermore, the used gas leak signal circuit C4 connects the input end of the NOT circuit 64 to one input end of a NAND circuit 73, and the other input end of the NAND circuit 73 is connected to the pressure signal processing circuit 20. The output ends are connected, and the input end of the NOT circuit 64 is connected to one side of the NAND circuit 75 via a timer and a NOT circuit 72, which is made up of a combination of a resistor 70 and a capacitor 71 and delays the signal by a predetermined period of time (for example, 3 minutes). The output terminal of the NAND circuit 73 is connected to the input terminal, and the output terminal of the NAND circuit 73 is connected to the NOT circuit 74.
It is connected to the other input terminal of the NAND circuit 75 via the NAND circuit 75. The pressure signal processing circuit 20 is a pressure signal circuit that, when a pressure drop signal is input from the pressure switch 6, outputs the pressure drop signal to the cock signal processing circuit 19 as described above and also outputs a control signal to the alarm display circuit 22. Consists of C5.
この圧力信号回路Ｃ５は、圧力スイッチ６がＯＮすると
該圧力スイッチ６に連結した入力端子３１がローレベル
となることで圧力低下を検知し、この圧力低下信号はＮ
ＯＴ回路７６で反転されるようになっている。上記禁止
回路２１は、使用後ガス漏れ信号回路Ｃ４よりの制御信
号の入力により復帰信号を受けるまでこれを記憶して電
磁弁電源回路２３と警報表示回路２２とへ制御信号を出
力するロック信号回路Ｃ６と警報表示信号回路Ｃ７とか
らなる。このロック信号回路Ｃ６と警報表示信号回路Ｃ
７とは、一方側入力端を前記使用後ガス漏れ信号回路Ｃ
４を連結し、他方側入力機を電源に連結したフリップフ
ロツプ回路７７からなり、該フリップフロップ回路７７
の正常時／・ィレベル出力端がロック信号回路Ｃ６とな
り、正常時ローレベル出力端が警報表示信号回路Ｃ７と
なしてある。上記警報表示回路２２は、警報表示信号回
路Ｃ７と圧力信号回路Ｃ５とのいずれかより制御信号を
受けると表示灯２４に通電の制御信号を出力する表示灯
通電信号回路Ｃ８と、警報表示信号回路Ｃ７と始動時ガ
ス漏れ信号回路Ｃ３と異常信号回路ＣＩとのいずれかよ
り制御信号を受けるとブザー２５に通電の制御信号を出
力するブザー通電信号回路Ｃ９とからなる。This pressure signal circuit C5 detects a pressure drop when the input terminal 31 connected to the pressure switch 6 becomes low level when the pressure switch 6 is turned on, and this pressure drop signal is N
It is designed to be inverted by an OT circuit 76. The prohibition circuit 21 is a lock signal circuit that stores a control signal from the gas leakage signal circuit C4 after use until it receives a return signal and outputs a control signal to the solenoid valve power supply circuit 23 and the alarm display circuit 22. C6 and an alarm display signal circuit C7. This lock signal circuit C6 and alarm display signal circuit C
7 means that one input end is connected to the gas leak signal circuit C after use.
4 are connected to each other, and the other side input device is connected to a power supply.
The low level output terminal during normal operation is a lock signal circuit C6, and the low level output terminal during normal operation is an alarm display signal circuit C7. The alarm display circuit 22 includes an indicator light energization signal circuit C8 that outputs a control signal for energizing the indicator light 24 when receiving a control signal from either the alarm display signal circuit C7 or the pressure signal circuit C5, and an alarm display signal circuit. C7, and a buzzer energization signal circuit C9 which outputs a control signal for energizing the buzzer 25 upon receiving a control signal from either the gas leakage signal circuit C3 or the abnormality signal circuit CI.
該表示灯通電信号回路Ｃ８は、一方側入力端に警報表示
信号回路Ｃ７を他方入力端に発振回路８８の出力端を連
結したＡＮＤ回路７８と、一方側入力端にロック信号回
路Ｃ６を他方側入力端に圧力信号回路Ｃ５を連結したＡ
ＮＤ回路７９とを有し、両ＡＮＤ回路７８，７９の出力
端をＯＲ回路８０の入力端に連結し、このＯＲ回路８０
の出力を表示灯２４への通電を開閉するトランジスタ８
３のベースに連結してなる。また、ブザー通電信号回路
Ｃ９は、警報表示信号回路Ｃ７と始動時ガス漏れ信号回
路Ｃ３と異常信号回路ＣＩとを一方側入力端に連結し他
方側入力端には発振回路８８を連結するＡＮＤ回路８２
を有し、このＡＮＤ回路８２の出力端をブザー２５への
通電を開閉するトランジスタ８４のベースに連結してな
る。上記電磁弁電源回路２３は、異常信号回路ＣＩと始
動時ガス漏れ信号回路Ｃ３とロック信号回路Ｃ６との制
御信号のいずれもがなく始動信号回路Ｃ２よりの制御信
号を受けた場合のみ電磁弁５へ通電の制御信号を出力す
る電磁弁通電信号回路Ｃ１０よりなる。The indicator light energization signal circuit C8 includes an AND circuit 78 in which an alarm display signal circuit C7 is connected to one input terminal and an output terminal of an oscillation circuit 88 is connected to the other input terminal, and a lock signal circuit C6 is connected to one input terminal on the other side. A with pressure signal circuit C5 connected to the input end
The output terminals of both AND circuits 78 and 79 are connected to the input terminal of an OR circuit 80.
A transistor 8 that switches on and off the output of the signal to the indicator light 24.
It is connected to the base of 3. The buzzer energization signal circuit C9 is an AND circuit that connects the alarm display signal circuit C7, the starting gas leakage signal circuit C3, and the abnormal signal circuit CI to one input terminal, and connects the oscillation circuit 88 to the other input terminal. 82
The output terminal of this AND circuit 82 is connected to the base of a transistor 84 that switches on and off the supply of electricity to the buzzer 25. The electromagnetic valve power supply circuit 23 operates only when the control signals from the abnormality signal circuit CI, the starting gas leakage signal circuit C3, and the lock signal circuit C6 are absent, and the electromagnetic valve power supply circuit 23 receives a control signal from the starting signal circuit C2. It consists of a solenoid valve energization signal circuit C10 that outputs a control signal for energization.
この電磁弁通電信号回路ＣＩＯは、始動信号回路Ｃ２と
ロック信号回路Ｃ６とが連結されたＮＡＮＤ回路８６の
出力端をＮＯＴ回路８５を介して電磁弁５への通電を開
閉するトランジスタ８９のベースに連結するもので、ま
た異常信号回路ＣＩと始動時ガス漏れ信号回路Ｃ３は上
記ＮＯＴ回路８５の入力端に連結してなる。なお、図中
２６は電源回路で、２７はフレームロッド電源出力端子
、２８は回路電源出力端子でありこのフレームロッド電
源出力端子２７と回路電源出力端子２８は各アンプ８の
フレームロッド電源入力端子１４と回路電源入力端子１
２とに連結される。次に本実施例の作用につき説明する
。ガスを使用していない場合で器具栓７が全て閉じてい
るとすればコックスイッチＳＩがＯＮとなり、その結果
始動信号回路Ｃ２には制御信号が生ぜず電磁弁電源回路
２３のトランジスタ８９は作動せず電磁弁５は閉じてい
る。This solenoid valve energization signal circuit CIO connects the output end of a NAND circuit 86 to which a start signal circuit C2 and a lock signal circuit C6 are connected to the base of a transistor 89 that opens and closes energization to the solenoid valve 5 via a NOT circuit 85. Furthermore, the abnormality signal circuit CI and the starting gas leakage signal circuit C3 are connected to the input terminal of the NOT circuit 85. In the figure, 26 is a power supply circuit, 27 is a frame rod power output terminal, and 28 is a circuit power output terminal.The frame rod power output terminal 27 and the circuit power output terminal 28 are connected to the frame rod power input terminal 14 of each amplifier 8. and circuit power input terminal 1
2. Next, the operation of this embodiment will be explained. If gas is not being used and all appliance valves 7 are closed, the cock switch SI is turned on, and as a result, no control signal is generated in the starting signal circuit C2, and the transistor 89 of the solenoid valve power supply circuit 23 is not activated. First, the solenoid valve 5 is closed.
次に、ガスを使用する場合は、器具栓７を開くといずれ
かのコックスイッチＳＩがＯＦＦとなり器具栓開信号が
生ずる。Next, when gas is used, when the appliance tap 7 is opened, one of the cock switches SI turns OFF and an appliance tap open signal is generated.
すると始動信号回路Ｃ２に制御信号が出力し、このとき
ロック信号回路Ｃ６に制御信号が出力されていなければ
トランジスタ８９は作動して電磁弁５へ通電する。上記
のガス使用開始に際して、例えばゴムホース４が外れて
いて多量にガスが漏れていることも有る。Then, a control signal is output to the start signal circuit C2, and if at this time no control signal is output to the lock signal circuit C6, the transistor 89 is activated and energizes the solenoid valve 5. When starting to use the gas, for example, the rubber hose 4 may come off and a large amount of gas may leak.
この様な場合、例え電磁弁５を開いてもガス供給路１内
のガス圧は漏洩量が多いため即所定のガス圧までには致
らない。そのためタイマ設定時間後も圧力スイッチ６が
ＯＮとなっているため、始動時ガス漏れ信号回路Ｃ３に
制御信号が出力され電磁弁５は閉じて、表示灯２４が点
灯し、警報ブザー２５が鳴る。コックスイッチＳＩがＯ
ＦＦとなり、ガス漏れがなければ始動信号回路Ｃ２より
制御信号が電磁弁電源回路２３に出力され続け、始動時
ガス漏れ信号回路Ｃ３には制御信号が出力されないため
引続き電磁弁５へは通電され電磁弁５を開き続けること
ができる。In such a case, even if the electromagnetic valve 5 is opened, the gas pressure in the gas supply path 1 will not immediately reach a predetermined gas pressure because of a large amount of leakage. Therefore, since the pressure switch 6 remains ON even after the timer set time, a control signal is output to the starting gas leak signal circuit C3, the solenoid valve 5 closes, the indicator light 24 lights up, and the alarm buzzer 25 sounds. Cock switch SI is O
FF, and if there is no gas leakage, a control signal will continue to be output from the starting signal circuit C2 to the solenoid valve power supply circuit 23, and since no control signal will be outputted to the gas leakage signal circuit C3 during startup, the solenoid valve 5 will continue to be energized and the solenoid valve 5 will continue to be energized. Valve 5 can remain open.
ただし、上記電磁弁電源回路２３へは異常信号回路ＣＩ
も連結されているため、異常信号が入力されれば、電磁
弁５への通電は遮断される。However, the abnormal signal circuit CI is connected to the solenoid valve power supply circuit 23.
Since the solenoid valve 5 is also connected, if an abnormal signal is input, the power to the solenoid valve 5 is cut off.
，器具栓７を開いても、ただちにフレームロッドＳ２で
燃焼を検知できるわけではない。この器具栓７を開いて
から、そのガス器具で燃焼が生じこの燃焼をフレームロ
ッドＳ２で検知するに必要な時間は前記抵抗６２とコン
デンサ６３とからなるタイマで異常信号の電磁弁電源回
路２３への入力を遅らせている。したがって、器具栓７
を開いたガス器具で燃焼が生じなかったり、または立消
えがあると、異常信号が発生して電磁弁５は自動的に閉
じる。ガス使用中に、ゴムホース４が抜けたりして多量
にガスが漏れることもある。, Even if the appliance plug 7 is opened, combustion cannot be immediately detected by the flame rod S2. The time required for combustion to occur in the gas appliance and to be detected by the flame rod S2 after the appliance tap 7 is opened is determined by the timer consisting of the resistor 62 and capacitor 63, which sends an abnormal signal to the electromagnetic valve power supply circuit 23. input is delayed. Therefore, the appliance stopper 7
If combustion does not occur in the opened gas appliance or there is a burnout, an abnormal signal is generated and the solenoid valve 5 is automatically closed. While the gas is in use, the rubber hose 4 may come off and a large amount of gas may leak.
この場合は器具栓７が開となった後タイマの設定時間後
に圧力スイッチ６が○Ｎしている前述の場合と同様であ
るため、電磁弁５は閉じ表示灯２４が点灯し、ブザー２
５が鳴る。ガス使用終了後器具栓７を全て閉じると始動
信号回路Ｃ２の制御信号は消えるため電磁弁５への通電
は遮断する。In this case, the pressure switch 6 turns ○N after the timer set time after the appliance tap 7 is opened, so the solenoid valve 5 close indicator light 24 lights up and the buzzer 2
5 rings. When all the appliance taps 7 are closed after the end of gas use, the control signal of the starting signal circuit C2 disappears, and therefore the energization to the solenoid valve 5 is cut off.
その後電磁弁５以後でガス漏れがなければ続いて残留ガ
スにより圧力スイッチ６はＯＦＦの状態でいるが、万一
ゴムホース４に亀裂でも有る場合は残留ガスは漏れて圧
力スイッチ６はＯＮとなる。この場合は電磁弁５を閉め
てから圧力スイッチ６力ＩＯＮするまでの時間によりガ
ス漏れの程度が検知できる。すなわち、ガス使用終了後
、抵抗７０とコンデンサ７１とからなるタイマの設定時
間内に圧力スイッチ６がＯＮとなるとガス漏れが危険な
程度であることを検知して使用後ガス漏れ信号回路Ｃ４
に制御信号が出力され、禁止回路２１を作動せしめる。
禁止回路２１が作動するとロック信号回路Ｃ６と警報表
示信号回路Ｃ７とに制御信号が出力され電磁弁６を閉の
状態にロックし、ブザー２５と表示灯２４とに通電する
。なお、禁止回路２１を復帰するための復帰信号は制御
盤９の電源を一度切って再投入することにより入力せし
めればよい。本発明は上記のごとき構造、作用よりなる
ため、ガス不便用時は電磁弁５が閉じガス漏れ事故を防
止することができる。Thereafter, if there is no gas leakage after the solenoid valve 5, the residual gas will keep the pressure switch 6 in the OFF state, but if there is a crack in the rubber hose 4, the residual gas will leak and the pressure switch 6 will be turned ON. In this case, the degree of gas leakage can be detected based on the time from closing the solenoid valve 5 to turning on the pressure switch 6. That is, when the pressure switch 6 is turned ON within the set time of the timer made up of the resistor 70 and the capacitor 71 after the end of gas use, it is detected that the gas leakage is dangerous and the gas leakage signal circuit C4 is activated after use.
A control signal is output to activate the inhibition circuit 21.
When the prohibition circuit 21 is activated, a control signal is output to the lock signal circuit C6 and the alarm display signal circuit C7 to lock the solenoid valve 6 in the closed state and energize the buzzer 25 and indicator light 24. Note that the return signal for returning the prohibition circuit 21 may be inputted by turning off the power to the control panel 9 and then turning it on again. Since the present invention has the above-described structure and operation, when gas is inconvenient, the solenoid valve 5 closes to prevent gas leakage accidents.
また、ガス使用時に、着火ミス、立消えが有っても、電
磁弁５が自動的に閉じるため生ガスが流出することはな
い。また、「本発明は、ガス使用開始時、及びガス使用
中に多量のガス漏れがあるとこれを検知してガス供給を
遮断することもできる。なお、上記のガス漏れはガス供
給路１内のガス庄に影響するほど多量のガス漏れでない
と検知できないが、ゴムホース亀裂等のわずかな量のガ
ス漏れは、ガス使用終了後検知するため、わずかな亀裂
でも事故原因を早期に発見して対処できるものである。Furthermore, even if there is an ignition error or a flameout when using gas, the solenoid valve 5 automatically closes, so raw gas will not leak out. Furthermore, the present invention can also detect a large amount of gas leakage at the start of gas use and during gas use, and cut off the gas supply. Although it cannot be detected unless the gas leak is large enough to affect the gas supply, small gas leaks such as those caused by cracks in rubber hoses are detected after the gas has been used, making it possible to detect and deal with the cause of an accident at an early stage even if there is a small crack. It is possible.
また、本発明は禁止回路２１を設せることにより、わず
かなガス漏れ時でもこれを検知すると、次にはガス漏れ
原因の有るのを無視してガス使用は行なえない（すなわ
ち所定の復帰操作が必要となる）ためガス供給系の保守
がより確実に期されることになる効果を有する。Furthermore, by providing the prohibition circuit 21, the present invention prevents the use of gas when even a slight gas leak is detected, ignoring the cause of the gas leak. This has the effect of ensuring that the gas supply system is maintained more reliably.
第１図は本発明ガス安全装置の正面図、第２図は本発明
装置のアンプ部の配線図、第３図は本発明装置の制御盤
のロジック回路図を示すものである。
１・・・ガス供弦台路、５・・・電磁弁、６・・・圧力
スイッチ、８…アンプ、９…制御滋、１８・・・異常信
号処理回路、１９・・・コック信号処理回路、２０・・
・圧力信号処理回路、２１・・・禁止回路、２２・・・
警報表示回路、２３・・・電磁弁電源回路、２４・・・
表示灯、２５・・・ブザー、Ｃ１・・・異常信号回路、
Ｃ２・・・始動信号回路、Ｃ３・・・始動時ガス漏れ信
号回路、Ｃ４・・・使用後ガス漏れ信号回路、Ｃ５…圧
力信号回路、Ｃ６…ロック信号回路、Ｃ７・・・警報表
示信号回路、Ｃ８・・・表示灯通電信号回路、Ｃ９・・
・ブザー通電信号回路、ＣＩ０・・・電磁弁通電信号回
路。
第１図第２図
図
の
船FIG. 1 is a front view of the gas safety device of the present invention, FIG. 2 is a wiring diagram of the amplifier section of the device of the present invention, and FIG. 3 is a logic circuit diagram of the control panel of the device of the present invention. 1... Gas supply line, 5... Solenoid valve, 6... Pressure switch, 8... Amplifier, 9... Control supply, 18... Abnormal signal processing circuit, 19... Cock signal processing circuit , 20...
・Pressure signal processing circuit, 21...Prohibition circuit, 22...
Alarm display circuit, 23... Solenoid valve power supply circuit, 24...
Indicator light, 25...buzzer, C1...abnormal signal circuit,
C2...Start signal circuit, C3...Gas leak signal circuit at startup, C4...Gas leak signal circuit after use, C5...Pressure signal circuit, C6...Lock signal circuit, C7...Alarm display signal circuit , C8... Indicator light energization signal circuit, C9...
・Buzzer energization signal circuit, CI0...Solenoid valve energization signal circuit. Figure 1 Figure 2 Ship
Claims (1)
路１を開いて下流側にガスを供給する電磁弁５を配し、
このガス供給路１の上記電磁弁５より下流側部位には、
該ガス供給路１内のガス圧の変化に応動してガス圧が所
定値以下となるとＯＮとなる圧力スイツチ６を配し、上
記ガス供給路１の下流部に連結されるガス器具Ｆ１，Ｆ
２，Ｆ３には、器具栓７の開閉に連動して該器具栓７を
閉じたときＯＮとなるコツクスイツチＳ１と、フレーム
ロツドＳ２と、該コツクスイツチＳ１とフレームロツド
Ｓ２とに連結され器具栓７が開かれると器具栓開信号を
出力する出力端子１３と、器具栓７が開で不燃のとき異
常信号を出力する出力端子１１とを有したアンプ８とを
各々配し、さらに、上記圧力スイツチ６と各アンプ８と
からの信号により、前記電磁弁５を開閉制御する制御盤
９とを設け、この制御盤９には、異常信号処理回路１８
と、コツク信号処理回路１９と、圧力信号処理回路２０
と、禁止回路２１と、警報表示回路２２と、電磁弁電源
回路２３とを配してなり、上記異常信号処理回路１８は
、各アンプ８のいずれか一つ以上の出力端子１１より異
常信号が入力されると、抵抗６２とコンデンサ６３より
なるタイマで該異常信号を所定時間遅らせて電磁弁電源
回路２３へ制御信号を出力する異常信号回路Ｃ１からな
り、上記コツク信号処理回路１９は、各アンプ８のいず
れか一つ以上の出力端子１３より器具栓開信号が入力さ
れると電磁弁電源回路２３へ制御信号を出力する始動信
号回路Ｃ２と、抵抗６５とコンデンサ６６とからなるタ
イマを介して該器具栓開信号の入力後所定時間内に圧力
スイツチ６よりの圧力低下信号の入力があつた場合に電
磁弁電源回路２３と警報表示回路２２とへ制御信号を出
力する始動時ガス漏れ信号回路Ｃ３と、抵抗７０とコン
デンサ７１とからなるタイマを介して該器具栓開信号の
入力が無くなつてから所定時間内に圧力スイツチ６より
の圧力低下信号が入力されると禁止回路２１へ制御信号
を出力する使用後ガス漏れ信号回路Ｃ４とからなり、上
記圧力信号処理回路２０は、圧力スイツチ６より圧力低
下信号が入力すると、前述のごとく該圧力低下信号をコ
ツク信号処理回路１９へ出力するとともに警報表示回路
２２へも制御信号を出力する圧力信号回路Ｃ５からなり
、上記禁止回路２１は、使用後ガス漏れ信号回路Ｃ４よ
りの制御信号の入力により復帰信号を受けるまでこれを
記憶して、電磁弁電源回路２３と警報表示回路２２とへ
制御信号を出力するロツク信号回路Ｃ６と警報表示信号
回路Ｃ７とからなり、上記警報表示回路２２は、警報表
示信号回路Ｃ７と圧力信号回路Ｃ５とのいずれかより制
御信号を受けること表示灯２４に通電の制御信号を出力
する表示灯通電信号回路Ｃ８と、警報表示信号回路Ｃ７
と始動時ガス漏れ信号回路Ｃ３とのいずれかより制御信
号を受けるとブザー２５へ通電の制御信号を出力するブ
ザー通電信号回路Ｃ９とからなり、上記電磁弁電源回路
２３は、異常信号回路Ｃ１と始動時ガス漏れ信号回路Ｃ
３とロツク信号回路Ｃ６との制御信号のいずれもが無く
始動信号回路Ｃ２よりの制御信号を受けた場合のみ電磁
弁５へ通電の制御信号を出力する電磁弁通電信号回路Ｃ
１０よりなるガス安全装置。1. A solenoid valve 5 is disposed upstream of the gas supply path 1 to open the gas supply path 1 only when energized and supply gas to the downstream side,
In the downstream part of the gas supply path 1 from the solenoid valve 5,
A pressure switch 6 that responds to changes in the gas pressure in the gas supply path 1 and turns on when the gas pressure falls below a predetermined value is disposed, and gas appliances F1, F connected to the downstream portion of the gas supply path 1 are provided.
2, F3 includes a control switch S1 that is linked to the opening and closing of the instrument stopper 7 and turns on when the instrument stopper 7 is closed, and a flame rod S2, which is connected to the stop switch S1 and the frame rod S2 and opens the instrument stopper 7. and an amplifier 8 having an output terminal 13 that outputs an appliance stopper open signal, and an output terminal 11 that outputs an abnormal signal when the appliance stopper 7 is open and non-flammable. A control panel 9 is provided which controls the opening and closing of the electromagnetic valve 5 based on signals from the amplifier 8, and the control panel 9 includes an abnormality signal processing circuit 18.
, Kotoku signal processing circuit 19 , and pressure signal processing circuit 20
, a prohibition circuit 21 , an alarm display circuit 22 , and a solenoid valve power supply circuit 23 . When input, the abnormal signal circuit C1 is comprised of an abnormal signal circuit C1 that delays the abnormal signal for a predetermined period of time using a timer consisting of a resistor 62 and a capacitor 63 and outputs a control signal to the solenoid valve power supply circuit 23. When an appliance stopper opening signal is input from one or more output terminals 13 of 8, a start signal circuit C2 outputs a control signal to the solenoid valve power supply circuit 23, and a timer consisting of a resistor 65 and a capacitor 66. A gas leak signal circuit at startup outputs a control signal to the electromagnetic valve power supply circuit 23 and the alarm display circuit 22 when a pressure drop signal is input from the pressure switch 6 within a predetermined time after input of the appliance cap opening signal. C3, a timer consisting of a resistor 70, and a capacitor 71, when a pressure drop signal from the pressure switch 6 is input within a predetermined time after the input of the appliance tap open signal is no longer input, a control signal is sent to the prohibition circuit 21. When a pressure drop signal is input from the pressure switch 6, the pressure signal processing circuit 20 outputs the pressure drop signal to the Kotoku signal processing circuit 19 as described above. It consists of a pressure signal circuit C5 that also outputs a control signal to the alarm display circuit 22, and the prohibition circuit 21 stores the control signal from the gas leakage signal circuit C4 after use until it receives a return signal, and then outputs an electromagnetic signal. It consists of a lock signal circuit C6 and an alarm display signal circuit C7 that output control signals to the valve power supply circuit 23 and the alarm display circuit 22. An indicator light energization signal circuit C8 receives a control signal from the indicator light 24 and outputs a control signal for energizing the indicator light 24, and an alarm display signal circuit C7
and a buzzer energization signal circuit C9 which outputs a control signal for energizing the buzzer 25 upon receiving a control signal from either the start gas leakage signal circuit C3 or the abnormality signal circuit C1. Gas leak signal circuit C at startup
A solenoid valve energization signal circuit C outputs a control signal for energizing the solenoid valve 5 only when there is no control signal from the start signal circuit C2 and the control signal from the start signal circuit C2.
Gas safety device consisting of 10 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14311078A JPS6027901B2 (en) | 1978-11-20 | 1978-11-20 | gas safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14311078A JPS6027901B2 (en) | 1978-11-20 | 1978-11-20 | gas safety device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5568529A JPS5568529A (en) | 1980-05-23 |
| JPS6027901B2 true JPS6027901B2 (en) | 1985-07-02 |
Family
ID=15331132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14311078A Expired JPS6027901B2 (en) | 1978-11-20 | 1978-11-20 | gas safety device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027901B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6127418A (en) * | 1984-07-17 | 1986-02-06 | Matsushita Electric Ind Co Ltd | Safety device for gas table stove |
| JPS61168726A (en) * | 1985-01-21 | 1986-07-30 | Norin Kogyosha:Goushi | Gas shut-off device |
| JPS62293019A (en) * | 1986-06-24 | 1987-12-19 | Kitazawa Valve:Kk | System to prevent gas accident |
| JP2676871B2 (en) * | 1989-01-24 | 1997-11-17 | 松下電器産業株式会社 | Combustor for heating |
-
1978
- 1978-11-20 JP JP14311078A patent/JPS6027901B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5568529A (en) | 1980-05-23 |
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