JP2006132795A - Gas cut-off device - Google Patents

Gas cut-off device Download PDF

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Publication number
JP2006132795A
JP2006132795A JP2004318981A JP2004318981A JP2006132795A JP 2006132795 A JP2006132795 A JP 2006132795A JP 2004318981 A JP2004318981 A JP 2004318981A JP 2004318981 A JP2004318981 A JP 2004318981A JP 2006132795 A JP2006132795 A JP 2006132795A
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Prior art keywords
gas
shut
circuit
flow rate
cut
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JP2004318981A
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Japanese (ja)
Inventor
Hirosumi Nakamura
廣純 中村
Kazunori Kamiyama
和則 上山
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2004318981A priority Critical patent/JP2006132795A/en
Publication of JP2006132795A publication Critical patent/JP2006132795A/en
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  • Feeding And Controlling Fuel (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas cutoff device capable of recognizing the soundness of a driving circuit in a cut-off valve. <P>SOLUTION: This gas cutoff device comprises a microcomputer 7 that has a timer section 6 for measuring the time on receiving a flow rate signal sent from a flow rate detecting circuit 4 and determining long-time gas non-use when the time is a predetermined time or more, and outputs a cut-off signal to a cut-off circuit 3 in the long-time gas non-use. Thus, the cut-off circuit 3 and the cut-off valve 2 are driven and the gas passage is blocked, thereby the soundness of the cut-off circuit 3 and the cut-off valve 2 is confirmed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ガス使用上の安全を図るガス遮断装置に関するものである。   The present invention relates to a gas shut-off device for ensuring safety in gas use.

従来この種のガス遮断装置は、図2に示すように、制御電源となるリチウム電池などの電池11と、ガス流路内に設けられた遮断弁12と、前記遮断弁12を駆動する遮断回路13と、ガスの流量を検出するリードスイッチと抵抗などを用いた流量検出回路14と、ガスの流量異常などを判断して緊急時などに前記遮断回路13に遮断信号を出力するマイクロコンピューター16などで構成している(例えば、特許文献1参照)。
特開平9−257247号公報
Conventionally, as shown in FIG. 2, this type of gas shut-off device includes a battery 11 such as a lithium battery serving as a control power source, a shut-off valve 12 provided in a gas flow path, and a shut-off circuit for driving the shut-off valve 12. 13, a flow detection circuit 14 using a reed switch for detecting a gas flow rate and a resistor, a microcomputer 16 for judging a gas flow rate abnormality and outputting a cutoff signal to the cutoff circuit 13 in an emergency, etc. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 9-257247

しかしながら、上記従来のガス遮断装置では、遮断回路13の健全性を確認できず、同遮断回路13が故障した場合に遮断弁12を駆動しガス流路を閉栓できなくなるなどの課題を有していた。   However, the conventional gas shut-off device has a problem that the soundness of the shut-off circuit 13 cannot be confirmed, and when the shut-off circuit 13 fails, the shut-off valve 12 cannot be driven to close the gas flow path. It was.

本発明はこのような従来の課題を解消するもので、信頼性の高いガス遮断装置を提供することを目的とするものである。   The present invention solves such a conventional problem, and an object of the present invention is to provide a highly reliable gas cutoff device.

本発明は上記目的を達成するために、制御電源である電池と、ガス流路内に設けられた遮断弁と、前記遮断弁を駆動する遮断回路と、ガスの流量を検出する流量検出回路と、警報などを表示する表示部と、前記流量検出回路から送られる流量信号を受取ると時間を計測し、所定時間以上であれば長期ガス不使用と判定するタイマ部を有し、長期ガス不使用時やガスの異常流量などを判断して前記遮断回路に遮断信号を出力するようにし、加えて長期ガス不使用時に前記遮断回路に遮断信号が出力されたにもかかわらず前記流量信号が入力されると表示部へ警報信号を出力するマイクロコンピューターを設けたものである。   To achieve the above object, the present invention provides a battery as a control power supply, a shut-off valve provided in a gas flow path, a shut-off circuit for driving the shut-off valve, and a flow rate detection circuit for detecting a gas flow rate. , A display unit that displays an alarm, etc., and a timer unit that measures time when receiving a flow rate signal sent from the flow rate detection circuit and determines that long-term gas is not used if it is longer than a predetermined time, and does not use long-term gas The shut-off signal is output to the shut-off circuit by judging the time and abnormal gas flow rate, etc. In addition, the flow-rate signal is input even though the shut-off signal is output to the shut-off circuit when the gas is not used for a long time. Then, a microcomputer that outputs an alarm signal to the display unit is provided.

上記によれば、長期間ガスを使用していない時に遮断回路と遮断弁を駆動しガス通路を閉栓することで遮断回路と遮断弁の健全性を確認することができる。また、実際にはガスを使用しているにもかかわらず流量検出回路の異常で長期ガス不使用と判断した場合遮断回路と遮断弁を駆動し、ガス通路を閉栓することで流量検出回路の異常時を検出することができる。且つ、長期不在者宅のガス遮断装置以降のガス漏れ等を防止することができる。   According to the above, the soundness of the shut-off circuit and the shut-off valve can be confirmed by driving the shut-off circuit and the shut-off valve and closing the gas passage when the gas is not used for a long time. In addition, if it is determined that the gas flow detection circuit is abnormal and the gas flow is not used for a long time even though the gas is actually used, the flow detection circuit malfunctions by driving the shut-off circuit and shut-off valve and closing the gas passage. The time can be detected. In addition, it is possible to prevent gas leakage and the like after the gas shut-off device at the long-term absentee's house.

そして、長期ガス不使用と判定する所定時間を任意に変更できる前記タイマ部を有した前記マイクロコンピューターを設けたものである。   And the said microcomputer which has the said timer part which can change arbitrarily the predetermined time determined to be long-term gas non-use is provided.

上記によれば、ガス消費者のガス使用状況に対応することができる。   According to the above, it is possible to cope with the gas usage status of the gas consumer.

本発明のガス遮断装置は、長期間ガスを使用していない時に遮断回路と遮断弁を駆動しガス通路を閉栓することで遮断回路と遮断弁の健全性を確認することができ、また、実際にはガスを使用しているにもかかわらず流量検出回路の異常で長期ガス不使用と判断した場合遮断回路と遮断弁を駆動し、ガス通路を閉栓することで流量検出回路の異常時を検出することができ、さらに、長期不在者宅のガス遮断装置以降のガス漏れなどを防止することで、ガス使用上の安全性を確保することができる。   The gas shutoff device of the present invention can check the soundness of the shutoff circuit and the shutoff valve by driving the shutoff circuit and the shutoff valve and closing the gas passage when the gas is not used for a long time. If the gas flow is detected, the flow rate detection circuit is abnormal and it is determined that the gas will not be used for a long time. The shutoff circuit and shutoff valve are driven and the gas passage is closed to detect when the flow rate detection circuit is abnormal. Further, by preventing gas leakage after the gas shut-off device at the long-term absentee's house, safety in using the gas can be ensured.

第1の発明は、制御電源である電池と、ガス流路内に設けられた遮断弁と、前記遮断弁を駆動する遮断回路と、ガスの流量を検出する流量検出回路と、警報などを表示する表示部と、前記流量検出回路から送られる流量信号を受取ると時間を計測し、所定時間以上であれば長期ガス不使用と判定するタイマ部とを具備し、長期ガス不使用時やガスの異常流量などを判断して前記遮断回路に遮断信号を出力し、且つ長期ガス不使用時に前記遮断回路に遮断信号が出力されたにもかかわらず前記流量信号が入力されると表示部へ警報信号を出力するマイクロコンピューターを設けたものである。   1st invention displays the battery which is a control power supply, the cutoff valve provided in the gas flow path, the cutoff circuit which drives the said cutoff valve, the flow volume detection circuit which detects the flow volume of gas, an alarm, etc. And a timer unit that measures time when receiving a flow rate signal sent from the flow rate detection circuit and determines that the gas is not used for a long period of time if it is longer than a predetermined time. When an abnormal flow rate is judged, a shut-off signal is output to the shut-off circuit, and a warning signal is output to the display unit when the shut-off signal is output to the shut-off circuit when gas is not used for a long time. Is provided.

上記によれば、長期間ガスを使用していない時に遮断回路と遮断弁を駆動しガス通路を閉栓することで遮断回路と遮断弁の健全性を確認することができる。また、実際にはガスを使用しているにもかかわらず流量検出回路の異常で長期ガス不使用と判断した場合遮断回路と遮断弁を駆動し、ガス通路を閉栓することで流量検出回路の異常時を検出することができる。さらに、長期不在者宅のガス遮断装置以降のガス漏れ等を防止することができる。   According to the above, the soundness of the shut-off circuit and the shut-off valve can be confirmed by driving the shut-off circuit and the shut-off valve and closing the gas passage when the gas is not used for a long time. In addition, if it is determined that the gas flow detection circuit is abnormal and the gas flow is not used for a long time even though the gas is actually used, the flow detection circuit malfunctions by driving the shut-off circuit and shut-off valve and closing the gas passage. The time can be detected. Furthermore, it is possible to prevent a gas leak or the like after the gas shut-off device at the long-term absentee's house.

第2の発明は、特に、第1の発明のマイクロコンピューターに長期ガス不使用と判定する所定時間を任意に変更できる前記タイマ部を設け、ガス消費者のガス使用状況に対応することができるようにしたものである。   In the second invention, in particular, the microcomputer according to the first invention is provided with the timer unit capable of arbitrarily changing the predetermined time for determining that the long-term gas is not used, so that it can cope with the gas usage situation of the gas consumer. It is a thing.

(実施の形態1)
図1において、制御電源となるリチウム電池などの電池1と、ガス流路内に設けられた遮断弁2と、前記遮断弁2を駆動する遮断回路3と、ガスの流量を検出するリードスイッチと抵抗などを用いた流量検出回路4と、警報などを表示するLEDを用いた表示部5と、前記流量検出回路4から送られる流量信号を受取ると時間を計測し、例えば30日間等の所定時間以上であれば長期ガス不使用と判定するタイマ部6を有し、かつ長期ガス不使用時やガスの異常流量などを判断して前記遮断回路2に遮断信号を出力し、さらに、長期ガス不使用時に前記遮断回路3に遮断信号が出力されたにもかかわらず前記流量信号が入力されると表示部5へ警報信号を出力するマイクロコンピューター7とで構成している。
(Embodiment 1)
In FIG. 1, a battery 1 such as a lithium battery as a control power source, a shut-off valve 2 provided in a gas flow path, a shut-off circuit 3 for driving the shut-off valve 2, and a reed switch for detecting a gas flow rate When a flow rate detection circuit 4 using a resistance or the like, a display unit 5 using an LED for displaying an alarm or the like, and a flow rate signal sent from the flow rate detection circuit 4 are received, the time is measured, for example, a predetermined time such as 30 days. If it is above, it has a timer unit 6 that determines that the gas is not used for a long time, determines whether the gas is not used for a long time, an abnormal flow rate of the gas, etc. The microcomputer 7 is configured to output an alarm signal to the display unit 5 when the flow rate signal is input even though the cutoff signal is output to the cutoff circuit 3 during use.

したがって、長期間ガスを使用していない時に遮断回路3と遮断弁2を駆動し、ガス通路を閉栓することで遮断回路3と遮断弁2の健全性を確認することができる。また、実際にはガスを使用しているにもかかわらず流量検出回路4の異常で長期ガス不使用と判断した場合も遮断回路3と遮断弁2を駆動し、ガス通路を閉栓することで流量検出回路4の異常を検出することができる。   Therefore, the soundness of the shut-off circuit 3 and the shut-off valve 2 can be confirmed by driving the shut-off circuit 3 and the shut-off valve 2 when the gas is not used for a long time and closing the gas passage. Even when gas is actually used, even if it is determined that the gas flow detection circuit 4 is abnormal and the gas is not used for a long time, the shutoff circuit 3 and the shutoff valve 2 are driven to close the gas passage. An abnormality of the detection circuit 4 can be detected.

(実施の形態2)
実施の形態1と異なる点は、前記マイクロコンピューター7に長期ガス不使用と判定する所定時間を所定の設定器や電話回線を用いた通信設定によって任意に変更できる前記タイマ部6を設けたものである。これにより、ガス消費者のガス使用状況に対応することができる。
(Embodiment 2)
The difference from the first embodiment is that the microcomputer 7 is provided with the timer unit 6 that can arbitrarily change a predetermined time for judging that the long-term gas is not used by communication setting using a predetermined setting device or a telephone line. is there. Thereby, it can respond to the gas usage condition of a gas consumer.

以上のように、本発明にかかるガス遮断装置は、長期間ガスを使用していない時に遮断回路と遮断弁を駆動しガス通路を閉栓するため、ガス給湯器やガス調理器などの用途にも適用できる。   As described above, the gas shut-off device according to the present invention drives the shut-off circuit and shut-off valve when the gas is not used for a long period of time to close the gas passage. Applicable.

本発明の実施の形態1を示すガス遮断装置のブロック図1 is a block diagram of a gas cutoff device showing Embodiment 1 of the present invention. 従来のガス遮断装置のブロック図Block diagram of a conventional gas shut-off device

符号の説明Explanation of symbols

1 電池
2 遮断弁
3 遮断動回路
4 流量検出回路
5 表示部
6 タイマ部
7 マイクロコンピューター
DESCRIPTION OF SYMBOLS 1 Battery 2 Shut-off valve 3 Shut-off action circuit 4 Flow rate detection circuit 5 Display part 6 Timer part 7 Microcomputer

Claims (2)

制御電源である電池と、ガス流路内に設けられた遮断弁と、前記遮断弁を駆動する遮断回路と、ガスの流量を検出する流量検出回路と、警報等を表示する表示部と、前記流量検出回路から送られる流量信号を受取ると時間を計測し所定時間以上であれば長期ガス不使用と判定するタイマ部を有するとともに、長期ガス不使用時やガスの異常流量などを判断して前記遮断回路に遮断信号を出力し、かつ長期ガス不使用時に前記遮断回路に遮断信号が出力されたにもかかわらず前記流量信号が入力されると表示部へ警報信号を出力するマイクロコンピューターとを具備したガス遮断装置。 A battery as a control power supply, a shut-off valve provided in the gas flow path, a shut-off circuit that drives the shut-off valve, a flow rate detection circuit that detects the flow rate of gas, a display unit that displays an alarm, and the like, When a flow rate signal sent from the flow rate detection circuit is received, the time is measured, and if it is longer than a predetermined time, it has a timer unit that determines that the long-term gas is not used, and when the long-term gas is not used or the abnormal flow rate of the gas is determined, A microcomputer that outputs a cut-off signal to the cut-off circuit, and outputs a warning signal to the display unit when the flow rate signal is input even though the cut-off signal is output to the cut-off circuit when the gas is not used for a long time Gas shut-off device. タイマ部は長期ガス不使用と判定する所定時間を任意に変更できるようにした請求項1記載のガス遮断装置。
The gas shut-off device according to claim 1, wherein the timer unit can arbitrarily change a predetermined time for determining that the long-term gas is not used.
JP2004318981A 2004-11-02 2004-11-02 Gas cut-off device Pending JP2006132795A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436958C (en) * 2006-11-22 2008-11-26 艾欧史密斯(中国)热水器有限公司 Gas water heater capable of harmful gas monitoring and alarming and method of monitoring and alarming
US9895892B2 (en) 2015-11-18 2018-02-20 Ricoh Company, Ltd. Head unit and liquid discharge apparatus including same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436958C (en) * 2006-11-22 2008-11-26 艾欧史密斯(中国)热水器有限公司 Gas water heater capable of harmful gas monitoring and alarming and method of monitoring and alarming
US9895892B2 (en) 2015-11-18 2018-02-20 Ricoh Company, Ltd. Head unit and liquid discharge apparatus including same

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