JP4453304B2 - Gas shut-off device - Google Patents

Gas shut-off device Download PDF

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JP4453304B2
JP4453304B2 JP2003306633A JP2003306633A JP4453304B2 JP 4453304 B2 JP4453304 B2 JP 4453304B2 JP 2003306633 A JP2003306633 A JP 2003306633A JP 2003306633 A JP2003306633 A JP 2003306633A JP 4453304 B2 JP4453304 B2 JP 4453304B2
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gas
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浩一 植木
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Panasonic Corp
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Matsushita Electric Industrial Co Ltd
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Description

本発明は、都市ガスやＬＰガス等を利用するガス器具において、ガスによる爆発事故や火災事故、中毒事故等を未然に防止するガス遮断装置に関する。   The present invention relates to a gas shut-off device that prevents explosion accidents, fire accidents, poisoning accidents, and the like due to gas in a gas appliance using city gas, LP gas, or the like.

従来のこの種のガス遮断装置は、図６のような構成になっていた（例えば、特許文献１参照）。   A conventional gas shut-off device of this type has a configuration as shown in FIG. 6 (see, for example, Patent Document 1).

図６において、２１は流量測定手段で、ガスメータを通過する流量を測定する。２２は遮断手段で、ガスメータの中に内蔵し電磁弁等からなりガス供給を遮断する。２３は遮断予告警報手段で、ガスの遮断を予告する。２４は個別流量推定手段で、流量測定手段２１で測定したガス流量に変化を検出した時、ガス器具の使用状態に変動があったものとしてその変化量に相当する個別流量を推定して、登録及び登録の抹消を行い、記憶する。２５は遮断時間制御手段で、記憶されている個別流量の内容に応じてガス流量の変化が認められていない状態が継続し得る限界の継続使用時間を設定し、この時間を経過したときに危険な状態が発生していると判断して遮断手段２２にガス遮断のための閉止信号を発すると共に、閉止信号を発する時間の一定時間前に遮断予告警報手段２３に警報信号を発する。   In FIG. 6, 21 is a flow rate measuring means for measuring the flow rate passing through the gas meter. A shut-off means 22 is built in the gas meter and comprises a solenoid valve or the like to shut off the gas supply. Reference numeral 23 denotes a cutoff notice warning means for notifying gas cutoff. 24 is an individual flow rate estimating means, and when a change in the gas flow rate measured by the flow rate measuring means 21 is detected, the individual flow rate corresponding to the change amount is estimated and registered as a change in the usage state of the gas appliance. And delete the registration and memorize it. 25 is a shut-off time control means, which sets a limit of the continuous use time in which a state in which no change in the gas flow rate is allowed can be continued according to the contents of the stored individual flow rate, and is dangerous when this time has passed. It is determined that a certain state has occurred, and a shut-off signal for shutting off the gas is issued to the shut-off means 22, and an alarm signal is sent to the shut-off notice warning means 23 a predetermined time before the time for issuing the close-up signal.

次に従来例の構成の動作を説明する。流量を計測して例えば３％以上の変化が認められれば個々のガス器具に相当する個別流量を推定して登録及び登録の抹消を行い、大きい順に記憶し、その最大のものに対する遮断時間及び遮断警報時間を設定する。遮断時間は（表１）のようになっている。   Next, the operation of the configuration of the conventional example will be described. For example, if a change of 3% or more is observed by measuring the flow rate, the individual flow rate corresponding to each gas appliance is estimated, and registration and deregistration are performed. Set the alarm time. The blocking time is as shown in (Table 1).

Figure 0004453304
Figure 0004453304

発熱量の異なるガス種（例えば、都市ガスで６Ｂならば５０００ｋｃａｌ／ｍ３、１３Ａならば１１０００ｋｃａｌ／ｍ３）も考慮して各ガス器具に相当するガス消費量区分にしてある。従って、最大個別流量に対する遮断時間を（表１）より参照するときはガス種によって予め設定しておいた単位流量当たりの発熱量を乗じて行うことになる。 Calorific value of different gas species (e.g., city gas 6B if 5000kcal / m 3, 13A if 11000kcal / m 3) also are the gas consumption segment corresponding to each gas appliance in consideration. Therefore, when referring to the cutoff time for the maximum individual flow rate from (Table 1), it is performed by multiplying the calorific value per unit flow rate set in advance by the gas type.

なお、このように最大個別流量によって遮断時間を変えているのはガス給湯器のような大流量を要するものは使用時間を短く、ガスストーブのような小さい流量のものは使用時間が長いという使用実態と、未燃ガスであれば大流量になる程短い時間でも爆発する危険が増大することによるものである。   It should be noted that the interruption time is changed according to the maximum individual flow rate in this way, such as a gas water heater that requires a large flow rate is used for a short time, and a small flow rate such as a gas stove is used for a long time. This is due to the fact that the unburned gas increases the risk of explosion even in a short time as the flow rate increases.

そして設定した遮断警報時間になったかどうか、及び設定した遮断時間になったかどうかを判断し、遮断警報時間に達した場合は危険な状況になりつつあると判断してガスの遮断予告警報を発し、遮断時間に到達したら危険な状態になっていると判断して遮断動作を行う。設定した遮断警報時間、遮断時間に達する前に流量の変化が認められた場合は再度個別流量の推定をやり直す。このとき、個別最大流量のものが入れ替わった時は、この新たな最大個別流量に対応する遮断時間、遮断警報時間を設定しなおす。このように最大個別流量に入れ替わりがなくとも流量に変化があれば継続時間の計測をやり直すのは、流量の変化がある限り別のガス器具が新たに使用開始されたか、使用停止されたかであり、ガスが正常に使用されていると判断されるからである。   Then, it is judged whether the set shut-off alarm time has been reached and whether the set shut-off time has been reached. When the shut-off alarm time is reached, it is judged that a dangerous situation is about to occur and a gas shut-off warning is issued. When the shut-off time is reached, it is judged that the state is dangerous, and the shut-off operation is performed. If a change in flow rate is detected before the set cutoff alarm time or cutoff time is reached, the individual flow rate is estimated again. At this time, when the individual maximum flow rate is changed, the cutoff time and cutoff alarm time corresponding to the new maximum individual flow rate are reset. In this way, if there is a change in the flow rate even if the maximum individual flow rate does not change, the measurement of the duration is repeated if another gas appliance is newly started or stopped as long as the flow rate changes. This is because it is judged that the gas is normally used.

通常器具使用流量は５００ｋｃａｌ／ｈ以上で使用時間の制限時間が設定されており、５００ｋｃａｌ／ｈ未満では使用時間遮断の対象外となり使用時間遮断判定を行わない。
特許第３１６９５９４号公報 Normally, the usage flow rate of the appliance is 500 kcal / h or more and the time limit for use time is set. If it is less than 500 kcal / h, the use time is not cut off and the use time cut-off determination is not performed.
Japanese Patent No. 3169594

しかしながら前記従来の構成では、下記課題があった。近年ガスコンロやガステーブルや、ガスファンヒータ等の燃焼能力が向上し下限流量が５００ｋｃａｌ／ｈ以下まで制御できている。例えばガスコンロやガステーブル等で煮炊き時に使用する弱火やとろ火といった流量は２５０〜３００ｋｃａｌ／ｈであり、従来の使用時間遮断対象外の低流量であり、需要家がこの低流量を使用開始した後、鍋等をガステーブル等にかけたまま買物などにでかけ、鍋をかけたままであることを忘れてしまい、結果鍋内部の水分が蒸発し焦げて、高温となり煙をだしたり、異常加熱状態に陥るのを防止できないという課題を有していた。   However, the conventional configuration has the following problems. In recent years, the combustion capacity of gas stoves, gas tables, gas fan heaters, and the like has been improved, and the lower limit flow rate can be controlled to 500 kcal / h or less. For example, the flow rate such as low heat and hot fire used when cooking on a gas stove, gas table, etc. is 250 to 300 kcal / h, which is a low flow rate that is not covered by the conventional use time, and after the customer starts using this low flow rate, If you leave the pot on a gas table, etc., you can go shopping and forget that you left it on the pot. As a result, the water inside the pot evaporates and burns, becomes hot, emits smoke, and falls into an abnormally heated state. It had a problem that could not be prevented.

本発明は前記従来の課題を解決するもので、ガス使用量が微少流量においても安全性の高いガス遮断装置を提供することを目的としたものである。   The present invention solves the above-described conventional problems, and an object of the present invention is to provide a highly safe gas cutoff device even when the amount of gas used is very small.

前記従来の課題を解決するために本発明は、ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、流量検出手段で検出した流量と境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に遮断手段に遮断信号を出力する使用時間判定手段と、使用時間判定手段が境界流量
記憶手段の最小境界流量値以下と判定したとき所定の境界流量値と比較する小流量判定手段とを備え、検出した流量が小流量判定手段の境界流量値以下の場合、所定の制限時間を使用時間判定手段に設定するようにしたものである。 In order to solve the above-mentioned conventional problems, the present invention provides a flow rate detection means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a cutoff means for blocking the gas supply path, and a predetermined flow rate range with a predetermined flow rate. Boundary flow rate storage means for storing a boundary flow rate value for setting a time limit for continuous use corresponding to each flow rate division, and a flow rate detected by the flow rate detection means and stored in the boundary flow rate storage means Compare with the boundary flow rate value to determine which flow category it belongs to, set the time limit for continuous use corresponding to the relevant flow rate category, and monitor the usage time and use it as the shut-off means when the time limit has passed A use time determining means for outputting a shut-off signal, and a small flow rate determining means for comparing with a predetermined boundary flow value when the use time determining means determines that it is equal to or less than the minimum boundary flow value of the boundary flow storage means. small For the following boundary flow rate value of the amount determining means, it is obtained so as to set the time determination means using a predetermined time limit.

このことにより、流量検出手段で検出した流量値が使用時間遮断の対象となるような最小境界流量未満の流量区分以下の場合、即ち小流量判定手段で設定された境界流量以下と判定した場合最小流量に対応した使用時間の制限時間を使用時間判定手段に設定し使用時間監視し、所定時間を超えた時、遮断信号を遮断手段に出力しガス供給を停止することによりガス需要家が誤って弱火で煮炊きをしているのを忘れて他の家事に夢中になっていても、遮断することでガス需要家に危険に至る前に通知でき、安全性や信頼性が向上する。 As a result, when the flow rate value detected by the flow rate detection means is less than the flow rate segment below the minimum boundary flow rate that is subject to usage time interruption, that is, when it is determined that the flow rate value is less than the boundary flow rate set by the small flow rate determination means The time limit corresponding to the flow rate is set in the usage time judgment means and the usage time is monitored, and when the specified time is exceeded, a gas signal is erroneously output by stopping the gas supply by outputting a cutoff signal to the cutoff means. Even if you forget to cook with low heat and are crazy about other housework, you can notify the gas consumer before it becomes dangerous by blocking it, improving safety and reliability.

以上説明したように本発明によれば、流量を検出する流量検出手段と、前記流量検出手段が検出した流量値を使用時間監視するためどの流量区分かを判定するための境界流量を設定する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値と比較し使用時間遮断対象外の流量かどうかを判定する使用時間判定手段と、検出した流量値が更に所定流量以下かどうかを判定し前記小流量判定手段より最小境界流量以下を検出時使用時間の制限時間を出力する小流量判定手段とを設けており、需要家が煮炊き等で器具を使用開始し、その使用流量を流量検出手段で検出しその流量値が使用時間遮断の対象とならない小さい流量の場合、即ち使用時間遮断対象の流量記憶値と検出流量とを比較して対象外と判定しても、更に小流量判定手段で所定流量以下と検出時使用時間判定手段に制限時間の設定値を出力し器具使用を監視すると共に最悪遮断時ガス事業者の保安センタに異常通知信号を出力することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、センタより需要家に通報したり、直接かけつけ緊急遮断等の所定の保安対策がとれたり、極めて安全性や信頼性が向上する効果がある。   According to the present invention described above, the boundary to set the flow rate detecting means for detecting the flow rate, the boundary flow rate to determine what flow rate class for the flow rate detecting means for monitoring usage time the flow rate value detected A flow rate storage unit, a usage time determination unit that compares the flow rate detected by the flow rate detection unit with a boundary flow rate value stored in the boundary flow rate storage unit and determines whether the flow rate is not subject to usage time interruption, and the detected flow rate A small flow rate judging means for judging whether the value is less than a predetermined flow rate and outputting a time limit for use time when detecting a minimum boundary flow rate or less from the small flow rate judging means. Start using, detect the used flow rate with the flow rate detection means, and if the flow rate value is a small flow rate that is not subject to usage time interruption, that is, compare the stored flow rate value of the usage time interruption target with the detected flow rate. Even if it is determined that it is outside, the small flow rate judgment means outputs the set time limit value to the detection time usage means when it is detected and monitors the use of the equipment, and at the worst shut-off, notifies the safety center of the gas operator. By outputting a signal, while the customer puts the pan on the gas table, he / she concentrates on other housework such as washing and prevents abnormal use such as scorching the pan, and in particular during frying tempura Without being ignited by the telephone for a long time, the oil is ignited and does not cause a fire, so the center can notify the customer, take the appropriate safety measures such as direct emergency stop, etc., and it is extremely safe and reliable. Has the effect of improving.

請求項１に記載の発明は、ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記使用時間判定手段が前記境界流量記憶手段の最小境界流量値以下と判定したとき所定の境界流量値と比較する小流量判定手段とを備え、検出した流量が前記小流量判定手段の境界流量値以下の場合、所定の制限時間を使用時間判定手段に設定するようにしたものである。
る。 According to the first aspect of the present invention, there is provided a flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a blocking means for blocking the gas supply path, and a predetermined flow rate range for each predetermined flow rate section. Boundary flow rate storage means for storing a boundary flow rate value for setting a time limit for continuous use corresponding to each flow rate division, a flow rate detected by the flow rate detection means, and a boundary stored in the boundary flow rate storage means The flow rate value is compared to determine which flow category it belongs to, and the time limit for continuous use corresponding to the flow rate category is set. And a use time determination means for outputting a shut-off signal, and a small flow rate determination means for comparing with a predetermined boundary flow value when the use time determination means determines that it is less than or equal to the minimum boundary flow value of the boundary flow storage means. If the amount is less than the boundary flow rate value of the small flow rate determining means, in which so as to set the time determination means using a predetermined time limit.
The

そして、需要家が煮炊き等で器具を使用開始し、その使用流量を流量検出手段で検出しその流量値が通常のガス器具の使用時間遮断の対象とならない小さい流量の場合、即ち使用時間遮断対象の境界流量記憶値と検出流量とを比較して対象外と判定し、更に小さな所定流量以下と小流量判定手段で検出時微少流量に対応した使用時間の制限時間を使用時間判定手段に設定して時間監視し所定時間超えた場合遮断出力を行い、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、又遮断情報をセンタに通報することによりセンタより需要家に通報したり、直接かけつけ保安対策がとれたり、極めて安全性や信頼性が向上する。   And when the customer starts using the appliance by cooking, the flow rate is detected by the flow rate detection means, and the flow rate value is a small flow rate that is not subject to the normal usage time cutoff of the gas appliance, that is, the usage time cutoff target The boundary flow rate memorized value and the detected flow rate are compared to determine that it is not applicable, and the usage time limiter corresponding to the minute flow rate at the time of detection is set in the usage time determination unit with a smaller predetermined flow rate or less and the small flow rate determination unit. When the time is exceeded and a predetermined time is exceeded, a shut-off output is performed, and the customer keeps the pan on the gas table and concentrates on other housework such as washing to prevent abnormal use such as scorching the pan. The oil that has been immersed in the telephone etc. for a long time during the frying process is ignited and does not cause a fire. Or take the security measures, to improve the extremely safety and reliability.

請求項２に記載の発明は、ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記使用時間判定手段が前記境界流量記憶手段の最小境界流量値以下と判定したとき、最小境界流量値より下方に設定した下限流量値と比較する下限流量判定手段とを備え、検出した流量が前記下限流量判定手段の下限流量値以上の場合、所定の制限時間を使用時間判定手段に設定するようにしたものである。 According to a second aspect of the present invention, there is provided a flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a blocking means for blocking the gas supply path, and a predetermined flow rate range for each predetermined flow rate section. Boundary flow rate storage means for storing a boundary flow rate value for setting a time limit for continuous use corresponding to each flow rate division, a flow rate detected by the flow rate detection means, and a boundary stored in the boundary flow rate storage means The flow rate value is compared to determine which flow category it belongs to, and the time limit for continuous use corresponding to the flow rate category is set. Use time determination means for outputting a shut-off signal, and a lower limit to be compared with a lower limit flow value set below the minimum boundary flow value when the use time determination means determines that the boundary flow value is less than or equal to the minimum boundary flow value A quantity determining means, when the detected flow rate is equal to or greater than the lower limit flow rate value of the lower limit flow rate determining means, in which so as to set the time determination means using a predetermined time limit.

そして、需要家が保有するガス器具で口火機能付の給湯器や燃焼量を小さく絞れるガステーブル等がある場合、口火のみがついている場合と煮炊き等で器具を使用する場合とを区別する必要があり、煮炊き等で器具を使用開始すると、その使用流量を流量検出手段で検出しその流量値が使用時間遮断の対象とならない小さい流量の場合、即ち使用時間遮断対象の流量記憶値と検出流量とを流量区分判定手段で比較して流量区分判定を行い所定流量区分以下と判定後、下限流量判定手段で更に小さな所定流量と比較し所定流量以上と判定時使用時間の制限時間値を設定して時間監視を行い異常な使用時間に達したら遮断することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、センタより需要家に通報したり、直接かけつけ保安対策ととれたり、極めて安全性や信頼性が向上する。   And if there is a gas heater owned by the consumer with a hot water heater with an ignition function or a gas table that can reduce the amount of combustion small, it is necessary to distinguish between the case where only the ignition is on and the case where the appliance is used for cooking, etc. Yes, when the appliance is used for cooking, etc., when the flow rate is detected by the flow rate detection means and the flow rate value is a small flow rate that is not subject to usage time interruption, that is, the flow rate memory value and the detected flow rate that are subject to usage time interruption. The flow rate judgment means compares the flow rate classification and determines that the flow rate is less than or equal to the predetermined flow rate category. By monitoring the time and shutting off when it reaches an abnormal usage time, the customer can put the pan on the gas table and concentrate on other housework such as washing and burn the pan. In addition to preventing accidents, especially when frying tempura, etc., you can immerse yourself in the phone for a long time and ignite the oil that has evaporated to catch fire. , Greatly improve safety and reliability.

請求項３に記載の発明は、ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された最小境界流量値とを比較し、検出した流量が最小境界流量値以下になったとき使用時間のカウントを開始する小流量監視手段と、前記小流量監視手段のカウントが所定の制限時間に達したとき遮断信号を出力するか警告信号を出力するかを切り替える切替手段と、前記警報信号を受けて警報を行う警報手段と、前記切替手段に遮断動作あるいは警告動作の切り替え指示を行う通信設定手段とを備え、
前記通信設定手段により事前に前記切替手段で遮断動作あるいは警告動作が設定されたとき前記小流量監視手段の監視動作を有効とするものである。 According to a third aspect of the present invention, there is provided a flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected , a blocking means for blocking the gas supply path , and a predetermined flow rate range for each predetermined flow rate section. Boundary flow rate storage means for storing a boundary flow rate value for setting a time limit for continuous use corresponding to each flow rate division, a flow rate detected by the flow rate detection means, and a boundary stored in the boundary flow rate storage means It determines whether belonging to the flow rate value in the flow rate class of the comparison Shido, corresponding flow rate class and sets the continuously usable time limit corresponding to the blocking means when the time limit monitors the use time has elapsed and use time judging means for outputting a blocking signal to the comparing the detected flow rate with a flow rate detecting means and the minimum boundary rate value stored in the boundary flow storage unit, the detected flow rate is equal to or less than the minimum boundary flow rate value when was A small flow rate monitoring means for starting the counting of the working time, a switching means for switching whether to output a cut-off signal or a warning signal when the count of the small flow rate monitoring means reaches a predetermined time limit, and the alarm signal Alarm means for receiving an alarm and communication setting means for instructing the switching means to switch between a blocking operation or a warning operation ,
The monitoring operation of the small flow rate monitoring means is validated when a shut-off operation or a warning operation is set in advance by the switching means by the communication setting means .

そして、需要家が保有するガス器具は需要家毎さまざまであり、口火機能付の大型の給湯器を主として使用したり、或いは需要家が煮炊き等で器具を使用したり、ストーブ等で部屋が暖まり燃焼量を絞って使用する場合等があり、予め事業者が需要家の保有ガス器具より判断し通信設定手段により切替手段で小流量検出時使用時間より遮断機能か警告機能かを選択でき、もし遮断機能側に選択した場合、その使用流量を流量検出手段で検出しその流量値が使用時間遮断の対象とならない小さい流量の場合、即ち使用時間遮断対象の流量記憶値と検出流量とを流量区分判定手段で比較して流量区分判定を行い所定流量区分以下と判定後、使用時間の制限時間を設定し使用時間計測開始し、所定時間が経過したならば遮断信号を出力し、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、又口火流量程度の小流量の場合特に遮断させる必要はなく器具の使用時間監視を行い器具メンテナンス等の情報管理に使用することができ、極めて使い勝手、安全性や信頼性が向上する。   Gas appliances held by consumers vary from customer to customer, and large hot water heaters with an open flame function are mainly used, or customers use appliances for cooking, etc., and rooms are warmed by stoves, etc. There are cases where the amount of combustion is reduced, etc., and the operator can judge from the gas equipment owned by the customer in advance, and the communication setting means can select the shut-off function or warning function from the usage time when detecting a small flow rate with the switching means. When the shut-off function is selected, the flow rate is detected by the flow rate detection means, and the flow rate value is a small flow rate that is not subject to use time shut-off. After determining the flow rate classification by comparing with the judgment means and determining that it is below the predetermined flow rate category, set the time limit for use time and start measuring the use time. Oil on the gas table is devoted to other housework such as washing to prevent abnormal use such as scorching the pan, and oil that has been immersed in a telephone etc. for a long time while evaporating tempura etc. If there is no fire due to fire, or if the flow rate is as low as the ignited flow rate, there is no need to shut it off, and it can be used for information management such as device maintenance by monitoring the usage time of the device, making it extremely easy to use and safe And reliability is improved.

請求項４に記載の発明は、ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記使用時間判定手段が前記境界流量記憶手段の最小境界流量値以下と判定したとき所定の境界流量値と比較し、検出した流量が前記所定の境界流量値以下の場合、所定の制限時間を設定する小流量判定手段と、外部に通報する通報手段とを備え、前記通報手段は、前記小流量判定手段で所定の境界流量値以下が検出され使用時間のカウントが開始されたことを通報する第１の通報手段と、使用時間のカウントが前記小流量判定手段で設定された制限時間に達したことを通報する第２の通報手段よりなるものである。 According to a fourth aspect of the present invention, there is provided a flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected , a blocking means for blocking the gas supply path , and a predetermined flow rate range for each predetermined flow rate section. boundary flow storage means for storing a boundary flow values for setting the divided time available continuous use limit for each flow rate class, the stored detected flow rate and a flow rate detection means to the boundary flow storage unit boundary It determines whether belonging to the flow rate value in the flow rate class of the comparison Shido, corresponding flow rate class and sets the continuously usable time limit corresponding to the blocking means when the time limit monitors the use time has elapsed A use time determining means for outputting a shut-off signal, and when the use time determining means determines that it is less than or equal to a minimum boundary flow value of the boundary flow storage means, the detected flow rate is compared with a predetermined boundary flow value. Flow rate For the following, with a small flow rate determining means for setting a predetermined limit period, and a notification means for notifying to the outside, the notification means, of the small flow rate determining means predetermined boundary flow value less is detected operating time The first reporting means for reporting that the count has started and the second reporting means for reporting that the usage time count has reached the time limit set by the small flow rate determination means .

そして、需要家が煮炊き等で器具を使用したり、ストーブ等で部屋が暖まり燃焼量を絞って使用した場合、その使用流量を流量検出手段で検出しその流量値が使用時間遮断の対象とならない小さい流量の場合、即ち使用時間遮断対象の流量記憶値と検出流量とを流量区分判定手段で比較して流量区分判定を行い所定流量区分以下と判定後、下限流量判定手段で更に小さな所定流量と比較し所定流量以上と判定時小流量時間計測手段により時間計測開始し、通常の使用時間遮断の制限時間よりかなり短い所定時間が経過したならばガス事業者の保安センタに警告信号を出力することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、センタより需要家に通報したり、最終遮断した場合通報がセンタにあがるので直ちに直接かけつけ保安対策ととれたり、極めて安全性や信頼性が向上する。   And when a consumer uses appliances for cooking, etc., or when the room is warmed by a stove or the like and the combustion amount is reduced, the flow rate is detected by the flow rate detection means, and the flow rate value is not subject to interruption of usage time In the case of a small flow rate, that is, after the flow rate judgment unit compares the flow rate stored value and the detected flow rate to be blocked for use time with the flow rate category judgment unit and determines that the flow rate is less than or equal to the predetermined flow rate category, Compared to a predetermined flow rate, when it is judged that the flow rate is over, start the time measurement by the small flow time measurement means, and output a warning signal to the gas company's security center if a predetermined time that is considerably shorter than the normal use time cutoff time has elapsed As a result, the customer can concentrate on other housework such as washing while keeping the pan on the gas table and prevent the pan from being used abnormally. In the middle of this, you can immerse yourself in a phone call for a long time, ignite the oil that has evaporated, and report to the customer from the center. , Greatly improve safety and reliability.

請求項５に記載の発明は、ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された最小境界流量値とを比較し、検出した流量が最小境界流量値以下になったとき使用時間のカウントを開始する小流量監視手段と、前記小流量監視手段のカウント値と比較する制限時間を設定する制限時間設定手段と、異常警告信号を受けて警告を行う警告手段とを備え、前記制限時間設定手段は、異常警告信号を出力する第１の制限時間と遮断信号を出力する第２の制限時間を設定するようにしたものである。 According to a fifth aspect of the present invention, there is provided a flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected , a blocking means for blocking the gas supply path , and a predetermined flow rate range for each predetermined flow rate section. Boundary flow rate storage means for storing a boundary flow rate value for setting a time limit for continuous use corresponding to each flow rate division, a flow rate detected by the flow rate detection means, and a boundary stored in the boundary flow rate storage means It determines whether belonging to the flow rate value in the flow rate class of the comparison Shido, corresponding flow rate class and sets the continuously usable time limit corresponding to the blocking means when the time limit monitors the use time has elapsed and use time judging means for outputting a blocking signal to the comparing the detected flow rate with a flow rate detecting means and the minimum boundary rate value stored in the boundary flow storage unit, the detected flow rate is equal to or less than the minimum boundary flow rate value when was With a small flow rate monitoring means for starting the counting of the use time, the a time limit setting means for setting a time limit to be compared with the count value of the small flow monitoring means and warning means for performing warning by receiving an abnormality warning signal, The time limit setting means sets a first time limit for outputting an abnormality warning signal and a second time limit for outputting a blocking signal .

そして、需要家が保有するガス器具は需要家毎さまざまであり、口火機能付の大型の給湯器を主として使用したり、或いは需要家が煮炊き等で器具を使用したり、ストーブ等で部屋が暖まり燃焼量を絞って使用する場合等があり、予め制限時間定手段により小流量検出時器具の異常使用時間より警告通知を行う短い警告時間を設定し、更に警告通知がなされ事業者より需要家に器具確認或いは器具停止の連絡に対し需要家が忘れた場合遮断させる制限時間が小流量監視手段に設定され、その使用時間監視がなされると共に、使用時間の制限時間が経過したならば遮断信号を出力し、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、極めて使い勝手、安全性や信頼性が向上する。   Gas appliances held by consumers vary from customer to customer, and large hot water heaters with an open flame function are mainly used, or customers use appliances for cooking, etc., and rooms are warmed by stoves, etc. There are cases where the amount of combustion is reduced, etc., and a short warning time is set in advance to notify the warning from the abnormal usage time of the device at the time of small flow rate detection by the time limit setting means, and further warning notification is made to the customer from the operator When the customer forgets to confirm the appliance or to stop the appliance, the time limit to be shut off is set in the small flow rate monitoring means, the usage time is monitored, and if the usage time limit has elapsed, the cutoff signal is sent. While the customer puts the pan on the gas table, he / she concentrates on other housework such as washing to prevent abnormal use such as scorching the pan, and especially during frying tempura Not to become a fire a long period of time is devoted to the phone, such as a flash to the vaporized oil, to improve extremely easy to use, safety and reliability.

請求項６に記載の発明は、請求項１〜５のいずれか１項記載のガス遮断装置の手段の全てもしくは一部をコンピュータに実行させるためのプログラムである。   Invention of Claim 6 is a program for making a computer perform all or one part of the means of the gas cutoff device of any one of Claims 1-5.

そして、プログラムであるのでマイコン等を用いて本発明の遮断装置の一部あるいは全てを容易に実現することができる。また記録媒体に記録したり通信回線を用いてプログラムを配信したりすることでプログラムの配布やインストール作業が簡単にできる。   And since it is a program, a part or all of the interruption | blocking apparatus of this invention can be easily implement | achieved using a microcomputer etc. Also, program distribution and installation can be simplified by recording on a recording medium or distributing a program using a communication line.

以下、本発明の実施例について、図１、図２、図３、図４及び図５を参照して説明する。図１、図２、図３、図４及び図５において、図６と同一機能を有する構成要素に関しては同一符号を付した。   Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1, 2, 3, 4 and 5. In FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, constituent elements having the same functions as those in FIG.

（実施例１）
図１は本発明の第１の実施例のガス遮断装置で、１は流量検出手段で、例えば膜式メータにおいてはガス計量毎にパルス信号を出力したり、超音波を用いた流量計測の場合伝搬時間を計測し瞬時流量値を出力したり、熱線式は流れる流量により上流・下流側の感知抵抗が変化しその抵抗値変化を検出し瞬時流量として出力したり、フルイディックメータ等ではコアンダ効果による流体の発信周波数を検出し瞬時流量として出力する場合等があり、ガス器具の使用量を計測し流量信号を出力する。２は遮断手段で、例えばソレノイド式電磁弁やモータ駆動式弁からなり、流量検出手段１より出力される流量値が所定流量以上の場合、遮断信号が出力されガス供給を停止する。３は境界流量記憶手段で、流量検出手段１で検出した流量値と比較される流量値であり、監視する流量域（例えばＬＰガスで家庭用の場合、５００ｋｃａｌ／ｈ〜６０，０００ｋｃａｌ／ｈ）を所定流量区分毎に分割し、各々の流量区分毎に対応した使用時間制限時間値を設定するための境界流量値を記憶している。４は使用時間判定手段で、流量検出手段１で検出した流量値と境界流量記憶手段３に格納された使用時間遮断の流量区分毎の境界流量値の器具流量かどうかを判定する境界流量値とを比較し、使用時間遮断の境界流量以下かどうかを判定し、検出流量に対応した使用時間の制限時間を設定し使用時間をカウントする。所定の制限時間が経過すると、器具の長時間異常使用と判定して、遮断手段２に遮断信号を出力しガス供給を停止する。５は小流量判定手段で、検出流量と境界流量記憶手段の最小流量とを比較し最小流量と判定時使用時間遮断の最下限の境界流量以下かどうかを判定する。低流量器具、例えばガステーブルやガスコンロ等の弱火機能の性能が改善されて通常の遮断流量以下の小流量域かを識別するための下限流量が設定されており、その下限流量以下かどうかを判定し、該当の小流量域の場合対応した使用時間の制限時間を使用時間判定手段４に設定する。６は通信手段で、使用時間判定手段４で制限時間経過を検出し遮断信号を出力したり、小流量判定手段５で境界流量以下を検出し所定の使用時間の制限時間が経過すると遮断信号が出力されるが、ガス事業者の保安センタへ、ＴＮＣＵ、電話回線（図示せず）等の通信手段を介して、遮断事象信号を送信する。又通信手段６等により使用時間判定手段４や小流量判定手段５の使用時間遮断の制限時間を可変設定できる。 Example 1
FIG. 1 shows a gas shut-off device according to a first embodiment of the present invention. Reference numeral 1 denotes a flow rate detecting means. For example, in a film type meter, a pulse signal is output for each gas measurement or a flow rate measurement using ultrasonic waves is performed. Measure the propagation time and output the instantaneous flow rate value. For the hot wire type, the sensing resistance on the upstream and downstream sides changes depending on the flowing flow rate, and the change in the resistance value is detected and output as the instantaneous flow rate. In some cases, the transmission frequency of the fluid is detected and output as an instantaneous flow rate, and the amount of gas appliance used is measured and a flow rate signal is output. Reference numeral 2 denotes a shut-off means, which comprises, for example, a solenoid type electromagnetic valve or a motor-driven valve. When the flow rate value output from the flow rate detection means 1 is a predetermined flow rate or higher, a shut-off signal is output and the gas supply is stopped. Reference numeral 3 denotes a boundary flow rate storage means, which is a flow rate value to be compared with the flow rate value detected by the flow rate detection means 1, and is a flow rate range to be monitored (for example, 500 kcal / h to 60,000 kcal / h for LP gas for home use). Is divided into predetermined flow rate segments, and boundary flow rate values for setting use time limit time values corresponding to the respective flow rate segments are stored. 4 is a use time determination means, which is a boundary flow value for determining whether the flow rate value detected by the flow rate detection means 1 and the instrument flow rate stored in the boundary flow storage means 3 is the boundary flow value for each flow rate segment of the use time interruption; Are compared, and it is determined whether or not the flow rate is below the boundary flow rate of the usage time, and the usage time limit corresponding to the detected flow rate is set and the usage time is counted. When a predetermined time limit elapses, it is determined that the appliance has been abnormally used for a long time, and a cutoff signal is output to the cutoff means 2 to stop the gas supply. Reference numeral 5 denotes a small flow rate determination means, which compares the detected flow rate with the minimum flow rate of the boundary flow rate storage means to determine whether the minimum flow rate is less than or equal to the lower limit boundary flow rate of the cut-off time for use. Lower flow rate is set to identify low flow rate devices, such as gas table and gas stove, and low flow rate range that is less than the normal cutoff flow rate. In the corresponding small flow rate region, the time limit of the corresponding usage time is set in the usage time determination means 4. A communication means 6 detects the passage of the time limit by the use time determination means 4 and outputs a shut-off signal, or the small flow rate judgment means 5 detects the boundary flow rate or less and the cut-off signal is output when the time limit of the predetermined use time elapses. Although it is output, a shut-off event signal is transmitted to the gas company's security center via communication means such as a TNCU or a telephone line (not shown). Further, the time limit for shutting down the use time of the use time determination means 4 and the small flow rate determination means 5 can be variably set by the communication means 6 or the like.

次に上記構成の動作を説明する。ガス遮断装置はガス需要家のガス器具使用状態を監視し、異常な長時間使用に達していないかどうかを判定する。ガス需要家の保有ガス器具で、ガステーブル、ガスストーブ等調理や、住環境の快適な室温制御に大燃焼量から、小燃焼量へ自動制御、或いは手動で調節可能な器具が増加すると共に、性能が向上してきている。このようなガス器具の使用状態を流量検出手段１で検出する。流量検出手段１で給湯器等の大流量域から、ガステーブルやストーブ等の小流量迄調節できる器具の流量域まで計測する。特にガスストーブ等長時間暖房するために通常の使い勝手と、もし万が一ガス漏れを起こした場合爆発事故を起こさないように使用時間の制限時間が決められている。その為に全流量域を１３区分に区分し、各々の流量区分毎遮断時間を設定するがその流量区分毎の境界流量が境界流量記憶手段３に格納されている。   Next, the operation of the above configuration will be described. The gas shut-off device monitors the gas appliance usage state of the gas consumer and determines whether or not it has not been used for an abnormal long time. With gas appliances owned by gas consumers, there is an increase in appliances that can be automatically controlled from a large combustion amount to a small combustion amount or manually adjusted for comfortable room temperature control such as gas table and gas stove, and comfortable living environment, Performance is improving. The use state of such a gas appliance is detected by the flow rate detection means 1. The flow rate detection means 1 measures from a large flow rate range such as a water heater to a flow rate range of an appliance that can be adjusted from a small flow rate such as a gas table or a stove. In particular, there is a normal use time for heating for a long time such as a gas stove, and a use time limit is set so that an explosion accident will not occur if a gas leaks. For this purpose, the entire flow area is divided into 13 sections, and the cutoff time for each flow section is set, but the boundary flow for each flow section is stored in the boundary flow storage means 3.

そして流量検出手段１で流量検出すると使用時間判定手段４で、検出流量と境界流量記憶手段３の境界流量とを比較し、どの流量区分かを判定する。流量が５００ｋｃａｌ／ｈ未満の場合、境界流量記憶手段３では使用時間遮断の対象外となるが、小流量判定手段５の境界流量以下かどうかを確認し、使用時間の制限時間を設定し使用時間をカウント開始する。ガステーブル等の調理器具の性能が向上し５００ｋｃａｌ／ｈ未満の弱燃焼量で安定した性能が出るような器具が開発されており、小流量判定手段５で所定流量以下を検出すると使用時間の制限時間を使用時間判定手段４に設定し制限時間が経過すると遮断手段２に遮断信号を出力しガス供給を停止する。通信手段６はガス需要家に遮断通報信号を出力したり、或いは電話回線などを介してガス事業者のセンタに遮断通知を行う。それにより事業者が保安の為の出動をしたり、或いはセンタより器具閉栓等確認後遮断手段２の開制御する通信信号を送り、安全使用状態を回復することができる。   When the flow rate is detected by the flow rate detection unit 1, the usage time determination unit 4 compares the detected flow rate with the boundary flow rate of the boundary flow rate storage unit 3 to determine which flow rate classification. If the flow rate is less than 500 kcal / h, the boundary flow rate storage means 3 is not subject to usage time interruption, but it is checked whether the flow rate is less than the boundary flow rate of the small flow rate determination means 5, and the usage time limit is set and the usage time is set. Start counting. An appliance that improves the performance of cooking utensils such as a gas table and produces stable performance with a low combustion amount of less than 500 kcal / h has been developed. When the time is set in the usage time determination means 4 and the time limit has elapsed, a cutoff signal is output to the cutoff means 2 and the gas supply is stopped. The communication means 6 outputs a cutoff notification signal to the gas consumer, or sends a cutoff notification to the center of the gas company via a telephone line or the like. As a result, the business operator can be dispatched for security, or the center can send a communication signal for controlling the opening of the shut-off means 2 after confirming that the appliance has been closed, and the safe use state can be recovered.

もし流量検出手段１で検出した流量が５００ｋｃａｌ／ｈ以上の場合、使用時間判定手段４で流量区分が判定され、使用時間判定手段４で流量域に応じ使用時間遮断の制限時間が設定されカウントされる。制限時間が経過すると遮断手段２を駆動しガス供給を停止する。   If the flow rate detected by the flow rate detection means 1 is 500 kcal / h or more, the usage time determination means 4 determines the flow rate classification, and the usage time determination means 4 sets and counts the usage time cutoff time limit according to the flow rate range. The When the time limit elapses, the shut-off means 2 is driven to stop the gas supply.

このようにして需要家が煮炊き等でガス器具を使用する場合、調理手順でとろ火或いは弱火といった煮込みを行うプロセスがあり使用流量値は極めて小さく、その使用流量を流量検出手段１で検出しその流量値が通常の使用時間遮断の対象とならない小さい流量の場合でも、小流量判定手段５で境界流量以下の小流量を検出時使用時間判定手段４に制限時間を設定し使用時間を監視して所定時間が経過したら遮断することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、又ガス事業者の保安センタに遮断通知通信信号を出力することにより、直接かけつけ保安対策がとれたり、極めて安全性や信頼性が向上する。   Thus, when a consumer uses a gas appliance for cooking, etc., there is a process of simmering in a cooking procedure, such as melting or low heat, the use flow value is extremely small, the use flow rate is detected by the flow detection means 1, and the flow rate Even when the value is a small flow rate that is not subject to normal usage time interruption, the small flow rate determination means 5 sets a time limit to the usage time determination means 4 when a small flow rate that is less than the boundary flow rate is detected, and the usage time is monitored to determine the predetermined flow rate. By shutting off when the time has passed, the customer keeps the pot on the gas table and concentrates on other housework such as washing to prevent abnormal use such as scorching the pot, especially fried tempura During the process, the oil that has been immersed in the telephone for a long time will not catch fire and cause a fire. Only or take the security measures, to improve extremely safety and reliability.

（実施例２）
図２は本発明の第２の実施例のガス遮断装置である。図２において、図１、図３、図４、図５及び図６と同一機能を有する構成要素には同一符号を付し説明は省略する。 (Example 2)
FIG. 2 shows a gas shut-off device according to a second embodiment of the present invention. 2, components having the same functions as those in FIGS. 1, 3, 4, 5, and 6 are given the same reference numerals, and descriptions thereof are omitted.

図２は本発明の第２の実施例のガス遮断装置で、７は下限流量判定手段で、流量検出手段１で検出した流量値と境界流量記憶手段３に格納された使用時間遮断の流量区分毎の最小の境界流量値、例えば５００ｋｃａｌ／ｈと比較しどの流量区分に属さない最小流量５００ｋｃａｌ／ｈの場合、更に下限流量の判定値、例えば２００ｋｃａＬ／ｈを有し弱燃焼量の器具流量以上かどうかを判定し、口火流量とは識別し、使用時間の制限時間を使用時間判定手段４に設定する。   FIG. 2 shows a gas shut-off device according to a second embodiment of the present invention. Reference numeral 7 denotes a lower limit flow rate judging means. The flow rate value detected by the flow rate detecting means 1 and the flow rate classification for shutting down the operating time stored in the boundary flow rate storage means 3 In the case of the minimum flow rate 500 kcal / h that does not belong to any flow rate category compared to the minimum boundary flow value for each, for example, 500 kcal / h, the lower limit flow rate determination value, for example, 200 kca L / h, and more than the appliance flow of weak combustion amount Whether or not it is distinguished from the igniting flow rate, and the time limit for use time is set in the use time determination means 4.

次に上記構成の動作を説明する。ガス遮断装置はガス需要家のガス器具使用状態を監視し、異常な長時間使用に達していないかどうかを判定する。ガス需要家の保有ガス器具で、ガステーブル、ガスストーブ等調理や、住環境の快適な室温制御に大燃焼量から、小燃焼量へ自動制御、或いは手動で調節可能な器具が増加すると共に、性能が向上してきている。このようなガス器具の使用状態を流量検出手段１で検出する。流量検出手段１で給湯器等の大流量域から、ガステーブルやストーブ等の小流量迄調節できる器具の流量域まで計測する。特にガスストーブ等長時間暖房するために通常の使い勝手と、もし万が一ガス漏れを起こした場合爆発事故を起こさないように使用時間の制限時間が決められている。その為に全流量域を１３区分に区分し、各々の流量区分毎遮断時間を設定するがその流量区分毎の境界流量が境界流量記憶手段３に格納されている。   Next, the operation of the above configuration will be described. The gas shut-off device monitors the gas appliance usage state of the gas consumer and determines whether or not it has not been used for an abnormal long time. With gas appliances owned by gas consumers, there is an increase in appliances that can be automatically controlled from a large combustion amount to a small combustion amount or manually adjusted for comfortable room temperature control such as gas table and gas stove, and comfortable living environment, Performance is improving. The use state of such a gas appliance is detected by the flow rate detection means 1. The flow rate detection means 1 measures from a large flow rate range such as a water heater to a flow rate range of an appliance that can be adjusted from a small flow rate such as a gas table or a stove. In particular, there is a normal use time for heating for a long time such as a gas stove, and a use time limit is set so that an explosion accident will not occur if a gas leaks. For this purpose, the entire flow area is divided into 13 sections, and the cutoff time for each flow section is set, but the boundary flow for each flow section is stored in the boundary flow storage means 3.

そして流量検出手段１で流量検出すると使用時間判定手段４で、検出流量と境界流量記憶手段３の境界流量とを比較し、どの流量区分かを判定する。流量が５００ｋｃａｌ／ｈ未満の場合、境界流量記憶手段３では使用時間遮断の対象外となり使用時間の制限時間が設定されないが、下限流量判定手段７は５００ｋｃａｌ／ｈ未満の流量域で更に口火流量など流量域か、ガステーブル等の器具の弱燃焼時の微少流量かの境界判定流量を有している。その下限流量以上かどうかを確認し、使用時間の制限時間を設定し使用時間をカウント開始する。ガステーブル等の調理器具の性能が向上し、例えば、おでん、シチュー等の煮込み料理、或いは正月料理のゴマメ等に３００ｋｃａＬ／ｈ程度の弱燃焼量で長時間料理することが可能であり、５００ｋｃａｌ／ｈ未満の弱燃焼量で安定した性能が出るような器具が開発されている。そこで流量検出手段１で検出した流量を下限流量判定手段５で境界流量記憶手段３の最小境界流量より少なく、かつ所定流量以上と判定時、使用時間判定手段４に器具使用時間の制限時間を設定し、時間監視を開始し制限時間が経過すると遮断手段２に遮断信号を出力しガス供給を停止する。   When the flow rate is detected by the flow rate detection unit 1, the usage time determination unit 4 compares the detected flow rate with the boundary flow rate of the boundary flow rate storage unit 3 to determine which flow rate classification. When the flow rate is less than 500 kcal / h, the boundary flow rate storage means 3 is not subject to use time interruption, and the use time limit time is not set. It has a boundary judgment flow rate between a flow rate range and a minute flow rate during weak combustion of an instrument such as a gas table. Check if the flow rate is over the lower limit, set the time limit for use time, and start counting the use time. The performance of cooking utensils such as gas tables is improved. For example, stewed dishes such as oden and stew, or New Year dishes sesame can be cooked for a long time with a low combustion amount of about 300 kca L / h, 500 kcal / Devices have been developed that provide stable performance with a low combustion quantity of less than h. Therefore, when the flow rate detected by the flow rate detection unit 1 is determined to be lower than the minimum boundary flow rate of the boundary flow rate storage unit 3 by the lower limit flow rate determination unit 5 and greater than or equal to a predetermined flow rate, a time limit for using the appliance is set in the usage time determination unit 4 Then, when the time monitoring is started and the time limit elapses, a cutoff signal is output to the cutoff means 2 and the gas supply is stopped.

また、口火機能付給湯器等の場合、口火流量事態が１００〜１５０ｋｃａｌ／ｈと更に小さい流量となる。下限流量判定手段７で例えば判定値として２００ｋｃａｌ／ｈ未満かどうかで判定しており、口火流量か否かを監視し、この場合使用時間判定手段４には制限時間などは出力しない。通常この流量位になると器具自体が外置きであり、失火していても爆発等の危険度がかなり低く、器具メンテナンスで発見可能である。   Moreover, in the case of a hot water heater with a igniting function, the igniting flow rate situation becomes a smaller flow rate of 100 to 150 kcal / h. For example, the lower limit flow rate determination means 7 determines whether or not the determination value is less than 200 kcal / h, and monitors whether the flow rate is a fire flow. In this case, the use time determination means 4 does not output a time limit or the like. Usually, at this flow rate level, the device itself is outside, and even if it is misfired, the risk of explosion etc. is considerably low, and it can be detected by device maintenance.

通信手段６はガス需要家に遮断通報信号を出力したり、或いは電話回線などを介してガス事業者のセンタに遮断通知を行う。それにより事業者が保安の為の出動をしたり、或いはセンタより器具閉栓等確認後遮断手段２の開制御する通信信号を送り、安全使用状態を回復することができる。   The communication means 6 outputs a cutoff notification signal to the gas consumer, or sends a cutoff notification to the center of the gas company via a telephone line or the like. As a result, the business operator can be dispatched for security, or the center can send a communication signal for controlling the opening of the shut-off means 2 after confirming that the appliance has been closed, and the safe use state can be recovered.

もし流量検出手段１で検出した流量が５００ｋｃａｌ／ｈ以上の場合、使用時間判定手段４で流量区分が判定され、使用時間判定手段４で流量域に応じ使用時間遮断の制限時間が設定されカウントされる。制限時間が経過すると遮断手段２を駆動しガス供給を停止する。   If the flow rate detected by the flow rate detection means 1 is 500 kcal / h or more, the usage time determination means 4 determines the flow rate classification, and the usage time determination means 4 sets and counts the usage time cutoff time limit according to the flow rate range. The When the time limit elapses, the shut-off means 2 is driven to stop the gas supply.

このようにして需要家が煮炊き等でガス器具を使用する場合、調理手順でとろ火或いは弱火といった煮込みを行うプロセスがあり使用流量値は極めて小さく、その使用流量を流量検出手段１で検出しその流量値が通常の使用時間遮断の対象とならない小さい流量の場合でも、下限流量判定手段７で境界流量以下の小流量と口火流量等とを区別可能で下限流量以上を検出時、使用時間判定手段４で制限時間を設定し使用時間を監視し所定時間が経過したら遮断することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、又ガス事業者の保安センタに遮断通知通信信号を出力することにより、直接かけつけ保安対策がとれたり、極めて安全性や信頼性が向上する。   Thus, when a consumer uses a gas appliance for cooking, etc., there is a process of simmering in a cooking procedure, such as melting or low heat, the use flow value is extremely small, the use flow rate is detected by the flow detection means 1, and the flow rate Even when the value is a small flow rate that is not subject to normal usage time interruption, the lower limit flow determination means 7 can distinguish between a small flow rate below the boundary flow rate and the igniting flow rate. By setting the time limit and monitoring the usage time and shutting it off after a predetermined time, the customer can put the pan on the gas table and concentrate on other housework such as washing, and the pan will become abnormally used In particular, while frying tempura, etc., it is immersed in the telephone for a long time and ignites the oil that has evaporated. By outputting the communication signal, rushed or take a safety measure directly, improved significantly safety and reliability.

（実施例３）
図３は本発明の第３の実施例のガス遮断装置である。図３において、図１、図２、図３、図４、図５及び図６と同一機能を有する構成要素には同一符号を付し説明は省略する。 (Example 3)
FIG. 3 shows a gas shut-off device according to a third embodiment of the present invention. 3, components having the same functions as those in FIGS. 1, 2, 3, 4, 5, and 6 are given the same reference numerals, and descriptions thereof are omitted.

図３は本発明の第３の実施例のガス遮断装置で、８は小流量監視手段で、流量検出手段１と境界流量記憶手段３の最小境界流量とを比較し最小流量以下通常の器具の流量区分域（通常は流量区分２以上）ではないと判定（流量区分１）し、使用時間の制限時間を設定し、器具の使用時間をカウントしつつ監視する。９は切替手段で、小流量監視手段８で使用時間カウントし、制限時間を超えた場合、遮断信号を出力するか、警告信号を出力するかを切り替える。１０は警告手段で、切替手段９で制限時間を超えると警告信号を出力され、ＬＣＤやＬＥＤ等の表示器を用いて器具の異常使用状態を表示するとともに、ガス事業者のセンタへ電話回線などを利用して長時間使用の警告信号を通知する。１１は通信設定手段で、ガス事業者のセンタより各ガス需要家の保有器具や器具の使い方より小流量監視手段８の監視流量域（境界流量判定手段３の最小流量域未満）の流量の使用時間より遮断するか、警告信号を出力するか選択する信号を通信電文などで出力する。一方、遮断時、或いは警告時事業者センタへその器具の使用状態を通知する。   FIG. 3 shows a gas shut-off device according to a third embodiment of the present invention. Reference numeral 8 denotes a small flow rate monitoring means, which compares the minimum boundary flow rate of the flow rate detection means 1 and the boundary flow rate storage means 3, It is determined that the flow rate is not in the flow rate range (usually greater than or equal to flow rate category 2) (flow rate category 1), a use time limit is set, and monitoring is performed while counting the use time of the instrument. Reference numeral 9 denotes a switching means, which counts the usage time by the small flow rate monitoring means 8 and switches whether to output a cut-off signal or a warning signal when the time limit is exceeded. 10 is a warning means. When the switching means 9 exceeds the time limit, a warning signal is output, and an abnormal use state of the instrument is displayed using a display such as an LCD or LED, and a telephone line is provided to the center of the gas company. Use the to notify the warning signal of long-time use. 11 is a communication setting means, which uses a flow rate in the monitoring flow rate range of the small flow rate monitoring means 8 (below the minimum flow rate range of the boundary flow rate judging means 3) rather than from the gas company's center. A signal for selecting whether to cut off from time or to output a warning signal is output by a communication message or the like. On the other hand, the usage status of the appliance is notified to the operator center at the time of interruption or warning.

次に上記構成の動作を説明する。ガス遮断装置はガス需要家のガス器具使用状態を監視し、異常な器具使用をしていないか、使用流量及び使用時間等を監視している。ガス需要家の保有ガス器具でガステーブルやガスストーブ等、調理や住環境の快適な室温制御に大燃焼量から小燃焼量へ自動制御、或いは調理状態をみて手動で燃焼量調節であるが、燃焼量即ちガス量の調節・使用可能範囲が広がり性能が向上してきている。このガス器具の使用状態を流量検出手段１で検出する。流量検出手段１で給湯器等の大流量域から、ガステーブルやストーブ等の小流量迄調節できる器具の流量域まで計測する。特にガスストーブ等長時間暖房するために通常の使い勝手と、もし万が一ガス漏れを起こした場合爆発事故を起こさないように使用時間の制限時間が決めている。その為に全流量域を１３区分に区分し、各々の流量区分毎使用時間の制限時間を設定するがその流量区分毎の境界流量が境界流量記憶手段３に格納されている。   Next, the operation of the above configuration will be described. The gas shut-off device monitors the gas appliance usage state of the gas consumer, and monitors the usage flow rate, usage time, etc. for abnormal usage. Gas appliances owned by gas consumers, such as gas tables and gas stoves, can automatically control from a large combustion amount to a small combustion amount for comfortable room temperature control of cooking and living environment, or adjust the combustion amount manually by looking at the cooking state, The range of adjustment and use of the combustion amount, that is, the gas amount has been expanded and the performance has been improved. The use state of the gas appliance is detected by the flow rate detection means 1. The flow rate detection means 1 measures from a large flow rate range such as a water heater to a flow rate range of an appliance that can be adjusted from a small flow rate such as a gas table or a stove. In particular, it has a normal use time for heating for a long time, such as a gas stove, and a time limit for use so as not to cause an explosion accident if a gas leaks. For this purpose, the entire flow rate region is divided into 13 segments, and the time limit for use for each flow rate segment is set, but the boundary flow rate for each flow rate segment is stored in the boundary flow rate storage means 3.

そして流量検出手段１で器具の流量を検出すると使用時間判定手段４で、検出流量と境界流量記憶手段３の境界流量とを比較し、どの流量区分かを判定する。流量が５００ｋｃａｌ／ｈ未満の場合、使用時間遮断の対象外となるが（表１の流量区分１）、その場合更に流量区分１の流量域を監視する境界流量判定値を設け、小流量監視手段８で流量区分１の流量判定値以下かどうかを確認する。ガステーブル等の調理器具の性能が向上し５００ｋｃａｌ/ｈ未満の弱燃焼量で安定した性能が出るような器具が開発されており、いわゆるとろ火でじっくりと煮込むような調理のために最小の燃焼量に絞って使用する場合がある。このとろ火状態が５００ｋｃａｌ／ｈ未満、流量区分２未満で流量区分１流量域の流量であることを検出時、小流量監視手段８が使用時間をカウント開始する。カウント開始後、煮込み等で所定時間以上使用したのを検出すると使用時間経過信号を切替手段９に出力する。切替手段９は予め通信設定手段１１等で、その出力が遮断信号を出力するか、警告信号を出力するか選択できる。通信設定手段１１より警告信号出力側に切替えられていたならば警告手段１０に警告信号を出力し、遮断信号出力側に選択されていた場合遮断手段２に遮断信号を出力する。   When the flow rate detection means 1 detects the flow rate of the appliance, the use time determination means 4 compares the detected flow rate with the boundary flow rate of the boundary flow rate storage means 3 to determine which flow rate classification. When the flow rate is less than 500 kcal / h, it is not subject to usage time interruption (flow rate category 1 in Table 1). In that case, a boundary flow rate judgment value for monitoring the flow rate range of the flow rate category 1 is provided, and a small flow rate monitoring means 8 confirms whether it is less than the flow rate judgment value of flow rate category 1. An appliance that improves the performance of cooking utensils such as gas tables and produces stable performance with a low combustion amount of less than 500 kcal / h has been developed. There are cases when it is narrowed down to use. The small flow rate monitoring means 8 starts counting the usage time when it is detected that the hot fire state is less than 500 kcal / h, less than the flow rate category 2 and the flow rate is in the flow rate category 1. After the count is started, when it is detected that it has been used for a predetermined time or longer by boiling or the like, a usage time elapsed signal is output to the switching means 9. The switching means 9 can be selected in advance by the communication setting means 11 or the like to output whether the output is a cutoff signal or a warning signal. If the communication setting means 11 has been switched to the warning signal output side, a warning signal is output to the warning means 10, and if it is selected on the cutoff signal output side, a cutoff signal is output to the cutoff means 2.

ガス需要家が比較的高年齢層で特に煮込みのような小流量域を使うことが多い場合、切替手段９で遮断側に通信設定手段１１で設定する。需要家がガステーブルの前を離れて、他の家事を行ったり、最悪そのままにして外出し忘れることがある。結果ガステーブルにかけた鍋内の水分が蒸発し焦げて加熱されつづけ、もうもうたる煙を出すことがある。こうしたことを防止するために、制限時間経過時遮断することにより防止可能である。   When the gas consumer often uses a small flow rate region such as simmering in a relatively old age group, the communication setting unit 11 is set to the cutoff side by the switching unit 9. A customer may leave the gas table, do other housework, or leave the worst and forget to go out. As a result, the water in the pan on the gas table evaporates, burns and continues to be heated, producing more smoke. In order to prevent this, it can be prevented by blocking when the time limit elapses.

一方、流量区分１で使用するガス器具を保有していなかったり、或いは比較的若いガス需要家で流量区分１を使用する頻度が少ない場合、切替手段９で警告手段１０側に設定しておくことができる。年間通して極めて稀な煮物料理等をされた場合でも小流量監視手段８でこの流量域を検出し所定時間が経過すると警告手段１０はガス需要家に器具長時間使用の警報信号を出力したり、或いは電話回線などを介してガス事業者のセンタに警告通知を行う。それにより事業者が保安の為の出動をしたり、或いはセンタより最悪遮断手段２を遮断制御する遠隔通信信号を送り、安全使用状態を確保することができる。   On the other hand, if the gas appliance used in the flow rate category 1 is not owned or the frequency of using the flow rate category 1 is relatively low for a relatively young gas customer, the switching means 9 should be set to the warning means 10 side. Can do. Even when an extremely rare simmered dish is cooked throughout the year, the low flow rate monitoring means 8 detects this flow rate range, and when a predetermined time elapses, the warning means 10 outputs an alarm signal indicating that the appliance has been used for a long time. Or, a warning is sent to the center of the gas company through a telephone line or the like. As a result, the business operator can be dispatched for security, or a remote communication signal for controlling the shutdown of the worst shut-off means 2 can be sent from the center to ensure a safe use state.

小流量域検出の使用時間は通常の煮込み料理などを想定した時間であり、遮断判定時に用いるような長時間だと鍋を焦がしたり高温状態となり煙をだしてしまうが、そのような長時間でないため需要家に速く警告できる。   The usage time of small flow area detection is the time that assumes normal stewed dishes etc., and if it is a long time used at the time of blocking judgment, it will burn the pan or become hot and emit smoke, but it is not such a long time Therefore, it can warn customers quickly.

一方、流量検出手段１で検出した流量が５００ｋｃａｌ／ｈ以上の場合、即ち境界流量判定手段３の境界流量と検出流量とを比較して流量区分２以上と判定した場合、使用時間判定手段４で流量域に応じ使用時間遮断の制限時間が設定されカウントされる。制限時間が経過すると、万が一ガス漏れの場合危険であり遮断手段２を駆動しガス供給を停止する。   On the other hand, when the flow rate detected by the flow rate detection unit 1 is 500 kcal / h or more, that is, when the boundary flow rate of the boundary flow rate determination unit 3 is compared with the detected flow rate and it is determined that the flow rate is 2 or higher, the usage time determination unit 4 The time limit for shutting down the usage time is set and counted according to the flow rate range. When the time limit elapses, it is dangerous if a gas leaks, and the shutoff means 2 is driven to stop the gas supply.

このようにして需要家が煮炊き等でガス器具を使用する場合、調理手順でとろ火或いは弱火といった煮込みを行うプロセスがあり使用流量値は極めて小さく、かつ長い時間かけて煮込むが、その使用流量を流量検出手段１で検出しその流量値が使用時間遮断の対象とならない小さい流量の場合、即ち使用時間遮断対象の流量記憶値と検出流量とを比較して対象外と判定されても、小流量監視手段８で使用時間の制限時間を設定し、制限時間に達すると通信設定手段１１で予め選択した信号により切替手段９は遮断手段２へ遮断信号か、或いは警告手段１０に警告信号を出力することにより、ガス需要家の異常な器具使用に対し遮断したり、又ガス需要家やガス事業者の保安センタに警告信号を出力することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、センタより需要家に通報したり、直接かけつけ保安対策がとれたり、極めて安全性や信頼性が向上する。   In this way, when customers use gas appliances for cooking, etc., there is a process of stewing in the cooking procedure such as melting or low heat, the use flow value is extremely small, and it is boiled over a long time, but the use flow rate is the flow rate When the flow rate value detected by the detection means 1 is a small flow rate that is not subject to usage time interruption, that is, even if it is determined that the flow rate memory value subject to usage time interruption is compared with the detected flow rate, A time limit for use time is set by means 8, and when the time limit is reached, the switching means 9 outputs a cut-off signal to the cut-off means 2 or a warning signal to the warning means 10 according to a signal previously selected by the communication setting means 11. By shutting off the abnormal use of gas appliances by the gas customer or by outputting a warning signal to the security center of the gas customer or gas operator, the customer can remove the pan from the gas table. While it is worn, concentrate on other housework such as washing to prevent abnormal use such as scorching the pan, and ignite the oil that has been immersed in the phone for a long time, especially when frying tempura, etc. Without any fire, the center can report to customers, take direct security measures, and improve safety and reliability.

（実施例４）
図４は本発明の第４の実施例のガス遮断装置である。図４において、図１、図２、図３、図５及び図６と同一機能を有する構成要素には同一符号を付し説明は省略する。 Example 4
FIG. 4 shows a gas shut-off device according to a fourth embodiment of the present invention. 4, components having the same functions as those in FIGS. 1, 2, 3, 5, and 6 are given the same reference numerals, and descriptions thereof are omitted.

図４は本発明の第４の実施例のガス遮断装置で、１２は第１の通報手段で、小流量判定手段５で、流量検出手段１で検出した流量値と境界流量記憶手段３に格納された使用時間遮断の流量区分毎の最小の境界流量値、例えば５００ｋｃａｌ／ｈと比較しどの流量区分に属さない最小流量５００ｋｃａｌ／ｈ未満を検出すると、ガス事業者やガス需要家に器具使用開始の通報を行う。１３は第２の通報手段で、小流量判定手段５で流量区分１の小流量域を検出後、制限時間経過した場合に遮断信号を出力すると共にガス事業者に異常通報を行う。   FIG. 4 shows a gas shut-off device according to a fourth embodiment of the present invention. Reference numeral 12 denotes a first notification means, which is a small flow rate determination means 5 which stores the flow rate value detected by the flow rate detection means 1 and the boundary flow rate storage means 3. When a minimum flow rate value for each flow rate segment with a cut-off time is detected, for example, less than 500 kcal / h that does not belong to any flow rate category, gas appliances and gas customers start using the appliance. Report. 13 is a 2nd report means, and when the time limit time passes after detecting the small flow area of the flow volume classification 1 by the small flow determination means 5, it outputs a cutoff signal and notifies the gas company of an abnormality.

次に上記構成の動作を説明する。ガス遮断装置はガス需要家のガス器具使用状態を監視し、異常な長時間使用に達していないかどうかを判定する。ガス需要家の保有ガス器具で、ガステーブル、ガスストーブ等調理や、住環境の快適な室温制御に大燃焼量から、小燃焼量へ自動制御、或いは手動で調節可能な器具が増加すると共に、性能が向上してきている。このようなガス器具の使用状態を流量検出手段１で検出する。流量検出手段１で給湯器等の大流量域から、ガステーブルやストーブ等の小流量迄調節できる器具の流量域まで計測する。特にガスストーブ等長時間暖房するために通常の使い勝手と、もし万が一ガス漏れを起こした場合爆発事故を起こさないように使用時間の制限時間が決められている。その為に全流量域を１３区分に区分し、各々の流量区分毎遮断時間を設定するがその流量区分毎の境界流量が境界流量記憶手段３に格納されている。   Next, the operation of the above configuration will be described. The gas shut-off device monitors the gas appliance usage state of the gas consumer and determines whether or not it has not been used for an abnormal long time. With gas appliances owned by gas consumers, there is an increase in appliances that can be automatically controlled from a large combustion amount to a small combustion amount or manually adjusted for comfortable room temperature control such as gas table and gas stove, and comfortable living environment, Performance is improving. The use state of such a gas appliance is detected by the flow rate detection means 1. The flow rate detection means 1 measures from a large flow rate range such as a water heater to a flow rate range of an appliance that can be adjusted from a small flow rate such as a gas table or a stove. In particular, there is a normal use time for heating for a long time such as a gas stove, and a use time limit is set so that an explosion accident will not occur if a gas leaks. For this purpose, the entire flow area is divided into 13 sections, and the cutoff time for each flow section is set, but the boundary flow for each flow section is stored in the boundary flow storage means 3.

そして流量検出手段１で流量検出すると使用時間判定手段４で、検出流量と境界流量記憶手段３の境界流量とを比較し、どの流量区分かを判定する。流量が５００ｋｃａｌ／ｈ未満の場合、境界流量記憶手段３では使用時間遮断の対象外となるが、小流量判定手段５の境界流量以下かどうかを確認し、使用時間の制限時間を設定し使用時間をカウント開始する。この時、第１の通報手段１２によりガス事業者やガス需要家に５００ｋｃａｌ／ｈ未満の流量、弱燃焼量で器具使用開始を通知する。更に使用時間の制限時間を使用時間判定手段４に設定する。ガステーブル等の調理器具の性能が向上し５００ｋｃａｌ／ｈ未満の弱燃焼量で安定した性能が出るような器具が開発されており、小流量判定手段５で所定流量以下を検出すると使用時間の制限時間を使用時間判定手段４に設定し制限時間が経過すると遮断手段２に遮断信号を出力しガス供給を停止すると共に、第２の通報手段１３より遮断通知信号を電文などで通報する。第１及び第２の通報手段１２，１３はガス需要家に遮断通報信号を出力したり、或いは電話回線などを介してガス事業者のセンタに遮断通知を行う。それにより事業者が保安の為の出動をしたり、或いはセンタより器具閉栓等確認後遮断手段２の開制御する通信信号を送り、安全使用状態を回復することができる。   When the flow rate is detected by the flow rate detection unit 1, the usage time determination unit 4 compares the detected flow rate with the boundary flow rate of the boundary flow rate storage unit 3 to determine which flow rate classification. If the flow rate is less than 500 kcal / h, the boundary flow rate storage means 3 is not subject to usage time interruption, but it is checked whether the flow rate is less than the boundary flow rate of the small flow rate determination means 5, and the usage time limit is set and the usage time is set. Start counting. At this time, the first reporting means 12 notifies the gas company or gas customer of the start of use of the appliance at a flow rate of less than 500 kcal / h and a weak combustion amount. Further, the time limit for use time is set in the use time determination means 4. An appliance that improves the performance of cooking utensils such as a gas table and produces stable performance with a low combustion amount of less than 500 kcal / h has been developed. When the time is set in the usage time determination means 4 and the time limit has elapsed, a cutoff signal is output to the cutoff means 2 to stop the gas supply, and a cutoff notification signal is reported from the second notification means 13 by a telegram or the like. The first and second notification means 12 and 13 output a cutoff notification signal to the gas consumer, or send a cutoff notification to the center of the gas company via a telephone line or the like. As a result, the business operator can be dispatched for security, or the center can send a communication signal for controlling the opening of the shut-off means 2 after confirming that the appliance has been closed, and the safe use state can be recovered.

もし流量検出手段１で検出した流量が５００ｋｃａｌ／ｈ以上の場合、使用時間判定手段４で流量区分が判定され、使用時間判定手段４で流量域に応じ使用時間遮断の制限時間が設定されカウントされる。制限時間が経過すると遮断手段２を駆動しガス供給を停止する。   If the flow rate detected by the flow rate detection means 1 is 500 kcal / h or more, the usage time determination means 4 determines the flow rate classification, and the usage time determination means 4 sets and counts the usage time cutoff time limit according to the flow rate range. The When the time limit elapses, the shut-off means 2 is driven to stop the gas supply.

このようにして需要家が煮炊き等でガス器具を使用する場合、調理手順でとろ火或いは弱火といった煮込みを行うプロセスがあり使用流量値は極めて小さく、その使用流量を流量検出手段１で検出しその流量値が通常の使用時間遮断の対象とならない小さい流量の場合でも、小流量判定手段５で境界流量以下の小流量を検出時使用時間判定手段４に制限時間を設定して使用時間を監視し、第１の通報手段１２でガス事業者やガス需要家に微少流量での使用開始を通知する。この通知により時々ガス事業者より確認の電話などを需要家に対し行える。しかしその後確認しても需要家が最悪忘れ制限時間の所定時間が経過したら遮断することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、第２の通報手段１３でガス事業者のセンタに通報し最終安全をとれたことがわかる。特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、又ガス事業者の保安センタに遮断通知通信信号を出力することにより、直接かけつけ保安対策がとれたり、極めて安全性や信頼性が向上する。   Thus, when a consumer uses a gas appliance for cooking, etc., there is a process of simmering in a cooking procedure, such as melting or low heat, the use flow value is extremely small, the use flow rate is detected by the flow detection means 1, and the flow rate Even if the value is a small flow rate that is not subject to normal use time interruption, the small flow rate determination means 5 sets a time limit to the use time determination means 4 when detecting a small flow rate below the boundary flow rate, and monitors the use time. The first reporting means 12 notifies the gas company or gas customer of the start of use at a minute flow rate. With this notification, a confirmation call can be made from the gas company to the customer from time to time. However, even if it is confirmed afterwards, the customer will shut down when the predetermined time of the worst forgotten time limit has passed, so that the customer can concentrate on other housework such as washing while the pan is on the gas table, abnormal use that burns the pan In addition to preventing the situation from occurring, it can be seen that the second reporting means 13 reports to the center of the gas company and the final safety is achieved. Especially when frying tempura, etc., it is immersed in the telephone for a long time and does not ignite the evaporated oil, causing a fire, and by directly outputting a shutoff notification communication signal to the gas company's security center. Security measures can be taken, and safety and reliability are greatly improved.

（実施例５）
図５は本発明の第５の実施例のガス遮断装置である。図５において、図１、図２、図３、図４及び図６と同一機能を有する構成要素には同一符号を付し説明は省略する。 (Example 5)
FIG. 5 shows a gas shut-off device according to a fifth embodiment of the present invention. In FIG. 5, components having the same functions as those in FIGS. 1, 2, 3, 4, and 6 are given the same reference numerals, and descriptions thereof are omitted.

図５は本発明の第５の実施例のガス遮断装置で、１４は制限時間設定手段で、小流量監視手段８へ設定する使用時間の通常使用の制限時間と異常使用の制限時間とを有し、小流量監視手段８に設定する。小流量監視手段８で、流量検出手段１で検出した流量値と境界流量記憶手段３に格納された使用時間遮断の流量区分毎の最小の境界流量値、例えば５００ｋｃａｌ／ｈと比較しどの流量区分に属さない最小流量５００ｋｃａｌ／ｈ未満を検出すると、器具の通常使用時間の設定値を出力し、更に器具を使用しつづけた場合、器具異常使用の制限時間を出力する。通常使用の時間経過時、警告手段１０に警告信号を出力し、ガス事業者に通常器具使用の限界に達したことを通知し、事業者より需要家に安全確認の通報を行う。それでも需要家が何らかの対応を怠っても異常使用の制限時間で器具使用の使用時間監視を行い、使用時間経過時遮断出力を行い、鍋がこげてもうもうたる煙りが出るのを防止する。   FIG. 5 shows a gas shut-off device according to a fifth embodiment of the present invention. Reference numeral 14 denotes a time limit setting means having a normal use time limit and an abnormal use time limit set for the small flow rate monitoring means 8. Then, the small flow rate monitoring means 8 is set. Compared with the flow rate value detected by the flow rate detection unit 1 and the minimum boundary flow rate value stored in the boundary flow rate storage unit 3 for each of the usage time cutoff flow rate levels, for example, 500 kcal / h, the small flow rate monitoring unit 8 When a minimum flow rate of less than 500 kcal / h that does not belong to is detected, the set value of the normal use time of the instrument is output, and when the instrument is used continuously, the time limit for abnormal use of the instrument is output. When the normal use time elapses, a warning signal is output to the warning means 10 to notify the gas company that the limit of normal equipment use has been reached, and the company notifies the consumer of safety confirmation. Nevertheless, even if the customer neglects any measures, the usage time of the appliance is monitored with the time limit for abnormal use, and a cut-off output is made when the usage time has elapsed to prevent the pan from being overgrown and causing further smoke.

次に上記構成の動作を説明する。ガス遮断装置はガス需要家のガス器具使用状態を監視し、異常な長時間使用に達していないかどうかを判定する。ガス需要家の保有ガス器具で、ガステーブル、ガスストーブ等調理や、住環境の快適な室温制御に大燃焼量から、小燃焼量へ自動制御、或いは手動で調節可能な器具が増加すると共に、性能が向上してきている。このようなガス器具の使用状態を流量検出手段１で検出する。流量検出手段１で給湯器等の大流量域から、ガステーブルやストーブ等の小流量迄調節できる器具の流量域まで計測する。特にガスストーブ等長時間暖房するために通常の使い勝手と、もし万が一ガス漏れを起こした場合爆発事故を起こさないように使用時間の制限時間が決められている。その為に全流量域を１３区分に区分し、各々の流量区分毎遮断時間を設定するがその流量区分毎の境界流量が境界流量記憶手段３に格納されている。   Next, the operation of the above configuration will be described. The gas shut-off device monitors the gas appliance usage state of the gas consumer and determines whether or not it has not been used for an abnormal long time. With gas appliances owned by gas consumers, there is an increase in appliances that can be automatically controlled from a large combustion amount to a small combustion amount or manually adjusted for comfortable room temperature control such as gas table and gas stove, and comfortable living environment, Performance is improving. The use state of such a gas appliance is detected by the flow rate detection means 1. The flow rate detection means 1 measures from a large flow rate range such as a water heater to a flow rate range of an appliance that can be adjusted from a small flow rate such as a gas table or a stove. In particular, there is a normal use time for heating for a long time such as a gas stove, and a use time limit is set so that an explosion accident will not occur if a gas leaks. For this purpose, the entire flow area is divided into 13 sections, and the cutoff time for each flow section is set, but the boundary flow for each flow section is stored in the boundary flow storage means 3.

そして流量検出手段１で流量検出すると使用時間判定手段４で、検出流量と境界流量記憶手段３の境界流量とを比較し、どの流量区分かを判定する。流量が５００ｋｃａｌ／ｈ未満の場合、境界流量記憶手段３では使用時間遮断の対象外となるが、小流量監視手段８の境界流量以下かどうかを確認し、使用時間の制限時間を設定し使用時間をカウント開始する。この時、制限時間設定手段１４は、器具の通常使用時間の制限時間をまず設定する。即ちガス需要家が５００ｋｃａｌ／ｈ未満の流量、弱燃焼量で器具使用する場合、調理ならば煮物など、或いは暖房器具ならば自動温度調節で安定燃焼の場合である。こうした小流量域で器具を使用する場合制限時間は前述の器具の使い方より通常使用の制限時間が想定されており、使用時間判定手段４設定される。ガステーブル等の調理器具の性能が向上し５００ｋｃａｌ／ｈ未満の弱燃焼量で安定した性能が出るような器具が開発されており、通常小流量監視手段５で所定流量以下を検出すると使用時間の制限時間を使用時間判定手段４に設定し制限時間が経過すると警告手段１０に警告信号が出力される。この時点でガス事業者は需要家に煮物などで器具を長く使用し続けていないか安全確認が行える。遮断予告の場合、遮断直前であり器具の異常な長時間使用であり、煮物の鍋がこげていたりする。警告時間はこのような事態が起きる前に需要家に対応通知する。   When the flow rate is detected by the flow rate detection unit 1, the usage time determination unit 4 compares the detected flow rate with the boundary flow rate of the boundary flow rate storage unit 3 to determine which flow rate classification. When the flow rate is less than 500 kcal / h, the boundary flow rate storage means 3 is not subject to use time interruption, but it is confirmed whether the flow rate is less than the boundary flow rate of the small flow rate monitoring means 8 and a use time limit time is set. Start counting. At this time, the time limit setting means 14 first sets a time limit for the normal use time of the appliance. That is, when the gas consumer uses the appliance at a flow rate of less than 500 kcal / h and a weak combustion amount, the cooking is a boiled food or the like for cooking, or the heating appliance is a stable combustion by automatic temperature control. When using the appliance in such a small flow rate range, the time limit for normal use is assumed from the above-described usage of the appliance, and the usage time determination means 4 is set. An appliance that improves the performance of a cooking utensil such as a gas table and produces stable performance with a low combustion amount of less than 500 kcal / h has been developed. When the time limit is set in the use time determination unit 4 and the time limit elapses, a warning signal is output to the warning unit 10. At this point, the gas company can confirm to the customer whether the appliance has been used for a long time with boiled food. In the case of an interruption notice, the appliance is used for an abnormally long time just before the interruption, and the boiled pot is burned. The warning time notifies the customer before such a situation occurs.

更に事業者より警告信号に基づき器具安全使用の限界通知をしても需要家が対応しなくてそのまま継続使用された場合、制限時間設定手段１４より最終の制限時間が小流量監視手段８に設定され時間監視する。制限時間が経過すると遮断手段２に遮断信号を出力しガス供給を停止すると共に、電話回線などを介してガス事業者のセンタに遮断通知を行う。それにより事業者が保安の為の出動をしたり、或いはセンタより器具閉栓等確認後遮断手段２の開制御する通信信号を送り、安全使用状態を回復することができる。   In addition, even if the operator notifies the limit of the safe use of the appliance based on the warning signal, if the customer does not respond and continues to use it as it is, the final time limit is set in the small flow rate monitoring means 8 by the time limit setting means 14. Be monitored time. When the time limit elapses, a shut-off signal is output to the shut-off means 2 to stop the gas supply, and a shut-off notice is sent to the gas company center via a telephone line or the like. As a result, the business operator can be dispatched for security, or the center can send a communication signal for controlling the opening of the shut-off means 2 after confirming that the appliance has been closed, and the safe use state can be recovered.

もし流量検出手段１で検出した流量が５００ｋｃａｌ／ｈ以上の場合、使用時間判定手段４で流量区分が判定され、使用時間判定手段４で流量域に応じ使用時間遮断の制限時間が設定されカウントされる。制限時間が経過すると遮断手段２を駆動しガス供給を停止する。   If the flow rate detected by the flow rate detection means 1 is 500 kcal / h or more, the usage time determination means 4 determines the flow rate classification, and the usage time determination means 4 sets and counts the usage time cutoff time limit according to the flow rate range. The When the time limit elapses, the shut-off means 2 is driven to stop the gas supply.

このようにして需要家が煮炊き等でガス器具を使用する場合、調理手順でとろ火或いは弱火といった煮込みを行うプロセスがあり使用流量値は極めて小さく、その使用流量を流量検出手段１で検出しその流量値が通常の使用時間遮断の対象とならない小さい流量の場合でも、小流量監視手段８で境界流量以下の小流量を検出時制限時間設定手段１４より器具の通常使用の制限時間を設定し使用時間を監視し、経過時警告手段１０でガス事業者やガス需要家に微少流量での安全使用経過通知を行い、器具の停止或いは器具の使い方見直しなどの対応処置を需要家に通知する。この通知によりガス需要家が器具使用しているのを忘れていた場合、器具停止などの対応が取れ、鍋を焦がしたりするのを防止することができる。   Thus, when a consumer uses a gas appliance for cooking, etc., there is a process of simmering in a cooking procedure, such as melting or low heat, the use flow value is extremely small, the use flow rate is detected by the flow detection means 1, and the flow rate Even when the flow rate is a small flow rate that is not subject to normal use time cut-off, the small flow rate monitoring means 8 sets a small flow rate that is equal to or lower than the boundary flow rate, and sets the normal use time limit of the appliance from the detection time limit time setting means 14. The progress warning means 10 notifies the gas company and the gas customer of the safe usage progress at a minute flow rate, and notifies the customer of the countermeasures such as stopping the appliance or reviewing the usage of the appliance. If this notification forgets that the gas customer is using the appliance, the appliance can be stopped and the pan can be prevented from being burnt.

しかしその後確認しても需要家が最悪忘れ制限時間の所定時間が経過したら遮断することにより、需要家が鍋をガステーブルにかけたまま、洗濯などの他家事に専念し鍋を焦がすような異常使用状態なるのを防止すると共に、第２の通報手段１３でガス事業者のセンタに通報し最終安全をとれたことがわかる。特に天ぷらなどを揚げている最中に長時間電話等に没頭され蒸発した油に引火して火災になることなく、又ガス事業者の保安センタに遮断通知通信信号を出力することにより、直接かけつけ保安対策がとれたり、極めて安全性や信頼性が向上する。   However, even if it is confirmed afterwards, the customer will shut down when the predetermined time of the worst forgotten time limit has passed, so that the customer can concentrate on other housework such as washing while the pan is on the gas table, abnormal use that burns the pan In addition to preventing the situation from occurring, it can be seen that the second reporting means 13 reports to the center of the gas company and the final safety is achieved. Especially when frying tempura, etc., it is immersed in the telephone for a long time and does not ignite the evaporated oil, causing a fire, and by directly outputting a shutoff notification communication signal to the gas company's security center. Security measures can be taken, and safety and reliability are greatly improved.

本発明の第１の実施例のガス遮断装置の制御ブロック図Control block diagram of the gas shut-off device of the first embodiment of the present invention 本発明の第２の実施例のガス遮断装置の制御ブロック図Control block diagram of gas cutoff device of second embodiment of the present invention 本発明の第３の実施例のガス遮断装置の制御ブロック図Control block diagram of gas shutoff device of third embodiment of the present invention 本発明の第４の実施例のガス遮断装置の制御ブロック図Control block diagram of gas shutoff device of fourth embodiment of the present invention 本発明の第５の実施例のガス遮断装置の制御ブロック図Control block diagram of gas cutoff device of fifth embodiment of the present invention 従来のガス遮断装置の制御ブロック図Control block diagram of a conventional gas shut-off device

符号の説明Explanation of symbols

１ 流量検出手段
２ 遮断手段
３ 境界流量記憶手段
４ 使用時間判定手段
５ 小流量判定手段
７ 下限流量判定手段
８ 小流量監視手段
９ 切替手段
１０ 警告手段
１１ 通信設定手段
１２ 第１の通報手段（報知手段）
１３ 第２の通報手段（報知手段）
１４ 制限時間設定手段 DESCRIPTION OF SYMBOLS 1 Flow detection means 2 Blocking means 3 Boundary flow storage means 4 Usage time determination means 5 Small flow rate determination means 7 Lower limit flow rate determination means 8 Small flow rate monitoring means 9 Switching means 10 Warning means 11 Communication setting means 12 First notification means (notification means)
13 Second notification means (notification means)
14 Time limit setting means

Claims (5)

ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記使用時間判定手段が前記境界流量記憶手段の最小境界流量値以下と判定したとき所定の境界流量値と比較する小流量判定手段とを備え、検出した流量が前記小流量判定手段の境界流量値以下の場合、所定の制限時間を使用時間判定手段に設定するようにしたガス遮断装置。 A flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a blocking means for blocking the gas supply path, and a continuous flow rate corresponding to each flow rate division by dividing a predetermined flow rate range into predetermined flow rate segments. Boundary flow storage means for storing a boundary flow value for setting a usable time limit, and a flow rate classification by comparing the flow detected by the flow detection means with the boundary flow value stored in the boundary flow storage means And determining a time limit for continuous use corresponding to the corresponding flow rate category, and monitoring a use time and outputting a cut-off signal to the cut-off means when the time limit has elapsed. And a small flow rate determining means for comparing with a predetermined boundary flow value when the usage time determining unit determines that it is less than or equal to the minimum boundary flow value of the boundary flow storage unit, and the detected flow rate is the small flow rate determining unit For the following boundary flow rate value, the gas cutoff apparatus designed to set the time determination means using a predetermined time limit. ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記使用時間判定手段が前記境界流量記憶手段の最小境界流量値以下と判定したとき、最小境界流量値より下方に設定した下限流量値と比較する下限流量判定手段とを備え、
検出した流量が前記下限流量判定手段の下限流量値以上の場合、所定の制限時間を使用時間判定手段に設定するようにしたガス遮断装置。 A flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a blocking means for blocking the gas supply path, and a continuous flow rate corresponding to each flow rate division by dividing a predetermined flow rate range into predetermined flow rate segments. Boundary flow storage means for storing a boundary flow value for setting a usable time limit, and a flow rate classification by comparing the flow detected by the flow detection means with the boundary flow value stored in the boundary flow storage means And determining a time limit for continuous use corresponding to the corresponding flow rate category, and monitoring a use time and outputting a cut-off signal to the cut-off means when the time limit has elapsed. And a lower limit flow rate determination means for comparing with a lower limit flow rate value set below the minimum boundary flow rate value when the usage time determination unit determines that the boundary flow rate storage unit is less than or equal to the minimum boundary flow rate value,
A gas shut-off device configured to set a predetermined time limit in the use time determination means when the detected flow rate is equal to or higher than the lower limit flow rate value of the lower limit flow rate determination means. ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を
出力する使用時間判定手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された最小境界流量値とを比較し、検出した流量が最小境界流量値以下になったとき使用時間のカウントを開始する小流量監視手段と、前記小流量監視手段のカウントが所定の制限時間に達したとき遮断信号を出力するか警告信号を出力するかを切り替える切替手段と、前記警報信号を受けて警報を行う警報手段と、前記切替手段に遮断動作あるいは警告動作の切り替え指示を行う通信設定手段とを備え、
前記通信設定手段により事前に前記切替手段で遮断動作あるいは警告動作が設定されたとき前記小流量監視手段の監視動作を有効とするガス遮断装置。 A flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a blocking means for blocking the gas supply path, and a continuous flow rate corresponding to each flow rate division by dividing a predetermined flow rate range into predetermined flow rate segments. Boundary flow storage means for storing a boundary flow value for setting a usable time limit, and a flow rate classification by comparing the flow detected by the flow detection means with the boundary flow value stored in the boundary flow storage means And determining a time limit for continuous use corresponding to the corresponding flow rate category, and monitoring a use time and outputting a cut-off signal to the cut-off means when the time limit has elapsed. And the flow rate detected by the flow rate detection means and the minimum boundary flow rate value stored in the boundary flow rate storage means, and when the detected flow rate falls below the minimum boundary flow rate value, the usage time is counted A small flow rate monitoring means, a switching means for switching whether to output a shut-off signal or a warning signal when the count of the small flow rate monitoring means reaches a predetermined time limit, and to receive an alarm in response to the alarm signal Comprising alarm means and communication setting means for instructing the switching means to switch between a blocking operation or a warning operation,
A gas shut-off device that validates the monitoring operation of the small flow rate monitoring means when a shut-off operation or warning action is set in advance by the switching means by the communication setting means. ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記使用時間判定手段が前記境界流量記憶手段の最小境界流量値以下と判定したとき所定の境界流量値と比較し、検出した流量が前記所定の境界流量値以下の場合、所定の制限時間を設定する小流量判定手段と、外部に通報する通報手段とを備え、
前記通報手段は、前記小流量判定手段で所定の境界流量値以下が検出され使用時間のカウントが開始されたことを通報する第１の通報手段と、使用時間のカウントが前記小流量判定手段で設定された制限時間に達したことを通報する第２の通報手段よりなるガス遮断装置。 A flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a blocking means for blocking the gas supply path, and a continuous flow rate corresponding to each flow rate division by dividing a predetermined flow rate range into predetermined flow rate segments. Boundary flow storage means for storing a boundary flow value for setting a usable time limit, and a flow rate classification by comparing the flow detected by the flow detection means with the boundary flow value stored in the boundary flow storage means And determining a time limit for continuous use corresponding to the corresponding flow rate category, and monitoring a use time and outputting a cut-off signal to the cut-off means when the time limit has elapsed. And when the usage time determination means determines that the flow rate is less than or equal to the minimum boundary flow value of the boundary flow rate storage means, and compares it with a predetermined boundary flow value, and if the detected flow rate is less than or equal to the predetermined boundary flow value, a predetermined limit With a small flow rate determining means for setting between, and a notification means for notifying to the outside,
The notification means includes a first notification means for notifying that the small flow rate determination means detects a value equal to or less than a predetermined boundary flow rate and starts counting the usage time, and the usage time count is the small flow rate determination means. A gas shut-off device comprising a second reporting means for reporting that the set time limit has been reached. ガス器具が接続されるガス供給路の流量を検出する流量検出手段と、前記ガス供給路を遮断する遮断手段と、予め定めた流量域を所定流量区分毎に分割し各流量区分に対応する連続使用可能な制限時間を設定するための境界流量値を記憶する境界流量記憶手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された境界流量値とを比較しどの流量区分に属するかを判定し、該当流量区分に対応する連続使用可能な制限時間を設定すると共に、使用時間を監視して制限時間が経過した場合に前記遮断手段に遮断信号を出力する使用時間判定手段と、前記流量検出手段で検出した流量と前記境界流量記憶手段に格納された最小境界流量値とを比較し、検出した流量が最小境界流量値以下になったとき使用時間のカウントを開始する小流量監視手段と、前記小流量監視手段のカウント値と比較する制限時間を設定する制限時間設定手段と、異常警告信号を受けて警告を行う警告手段とを備え、
前記制限時間設定手段は、異常警告信号を出力する第１の制限時間と遮断信号を出力する第２の制限時間を設定するようにしたガス遮断装置。 A flow rate detecting means for detecting a flow rate of a gas supply path to which a gas appliance is connected, a blocking means for blocking the gas supply path, and a continuous flow rate corresponding to each flow rate division by dividing a predetermined flow rate range into predetermined flow rate segments. Boundary flow storage means for storing a boundary flow value for setting a usable time limit, and a flow rate classification by comparing the flow detected by the flow detection means with the boundary flow value stored in the boundary flow storage means And determining a time limit for continuous use corresponding to the corresponding flow rate category, and monitoring a use time and outputting a cut-off signal to the cut-off means when the time limit has elapsed. And the flow rate detected by the flow rate detection means and the minimum boundary flow rate value stored in the boundary flow rate storage means, and when the detected flow rate falls below the minimum boundary flow rate value, the usage time is counted Provided that a small flow rate monitoring means, said a time limit setting means for setting a time limit to be compared with the count value of the small flow monitoring means and warning means for performing warning by receiving an abnormality warning signal,
The time limit setting means is a gas shut-off device configured to set a first time limit for outputting an abnormality warning signal and a second time limit for outputting a shut-off signal.
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