JP4197645B2 - Wall-mounted gas detector - Google Patents

Wall-mounted gas detector Download PDF

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JP4197645B2
JP4197645B2 JP2003432286A JP2003432286A JP4197645B2 JP 4197645 B2 JP4197645 B2 JP 4197645B2 JP 2003432286 A JP2003432286 A JP 2003432286A JP 2003432286 A JP2003432286 A JP 2003432286A JP 4197645 B2 JP4197645 B2 JP 4197645B2
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cover
gas sensor
gas
housing
wall
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JP2005189150A (en
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博之 岡
泰弘 瀬戸口
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Figaro Engineering Inc
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Description

この発明は、壁面埋め込み形のガス検出装置に関する。 The present invention relates to a wall-embedded gas detection device.

発明者らは、ガス検出装置を部分的に壁面内に埋設するように設置することを検討した。このようにすると壁面からのガス検出装置の出っ張りが少なく、デザイン上も美しく、またガス検出装置に人や家具などが衝突するおそれも少ない。発明者のデザインでは、壁面に埋め込んだガス検出装置は壁面内の電気配線用のアダプタに接続し、アダプタから給電を受け、アダプタを介して集中監視装置などの外部機器と接続する。発明者らはこの過程で、ガス検出装置を壁面内に埋設すると、ガスの警報濃度が増し、ガス感度が低下するという現象に直面した。例えばフロンＲ−１３４ａ１０００ppmで警報するようにフロン警報器を設定して壁面内に埋設すると、フロンＲ−１３４ａが２０００ppm程度になるまで警報しないなどの例が生じた。   The inventors studied to install the gas detection device so as to be partially embedded in the wall surface. In this way, there is little protrusion of the gas detection device from the wall surface, the design is beautiful, and there is little risk of people or furniture colliding with the gas detection device. In the inventor's design, the gas detection device embedded in the wall surface is connected to an adapter for electrical wiring in the wall surface, receives power from the adapter, and is connected to an external device such as a centralized monitoring device via the adapter. In this process, the inventors faced the phenomenon that when the gas detection device is embedded in the wall surface, the alarm concentration of the gas increases and the gas sensitivity decreases. For example, when a Freon alarm is set to embed an alarm at 1000 ppm of Freon R-134a and embedded in the wall surface, an example is given in which no alarm is issued until Freon R-134a reaches about 2000 ppm.

特許文献１，２はガス検出装置のカバーの通気孔の付近にフィルタを設けて、通気孔の奧のガスセンサに達するガスから不要なガスを除去することを開示している。しかしながら特許文献１は、壁面内にガス検出装置の底面側のケースを埋め込むように設置することを検討していない。
特開２００２−３１０９７０ 特許３１９７４０１ Patent Documents 1 and 2 disclose that a filter is provided in the vicinity of the vent hole of the cover of the gas detection device to remove unnecessary gas from the gas reaching the gas sensor at the bottom of the vent hole. However, Patent Document 1 does not consider installing the bottom surface side case of the gas detection device in the wall surface.
JP2002-310970 Patent 3197401

この発明の課題は、壁面埋め込み形ガス検出装置で、ガス感度が低下することを防止することにある。   An object of the present invention is to prevent a gas sensitivity from being lowered in a wall surface embedded type gas detection device.

この発明の壁面埋め込み形のガス検出装置は、カバーとケースとからなるハウジングにガスセンサを収容して、カバーに設けた開口から室内のガスをハウジング内のガスセンサへ導入するようにした装置において、前記ケースを壁面内への埋め込みと壁面内の配線への接続とが自在にすると共に、前記ガスセンサは、ガスセンサのカバーと、ベースと、ガスセンサのカバーとベースとの間に設けたセンサ本体とから成り、前記ガスセンサの周囲を覆う筒状の部材を、ガスセンサのカバー及びベースとは別体に、前記ハウジング内に設けて、前記筒状の部材とハウジングのカバーの開口の周囲との間、もしくは該部材とガスセンサを搭載したプリント基板との間に気密部材を設けることにより、前記筒状の部材の内部をハウジング内の他のスペースから気密にしたことを特徴とする。 The wall-embedded gas detection device of the present invention is a device in which a gas sensor is accommodated in a housing composed of a cover and a case, and indoor gas is introduced into the gas sensor in the housing from an opening provided in the cover. The case can be embedded in the wall surface and connected to the wiring in the wall surface, and the gas sensor includes a gas sensor cover, a base, and a sensor body provided between the gas sensor cover and the base. A cylindrical member covering the periphery of the gas sensor is provided in the housing separately from the cover and base of the gas sensor, and between the cylindrical member and the periphery of the opening of the cover of the housing, or By providing an airtight member between the member and the printed circuit board on which the gas sensor is mounted, the inside of the cylindrical member is connected to another space in the housing. Is characterized in that the air-tight from the scan.

またこの発明の壁面埋め込み形のガス検出装置は、 カバーとケースとからなるハウジングにガスセンサを収容して、カバーに設けた開口から室内のガスをハウジング内のガスセンサへ導入するようにした装置において、前記ケースを壁面内への埋め込みと壁面内の配線への接続とが自在にすると共に、前記ガスセンサは、ガスセンサのカバーと、ベースと、ガスセンサのカバーとベースとの間に設けたセンサ本体とから成り、前記ガスセンサのカバーの頭部にのみ通気孔を設けて、該頭部がハウジングのカバーの開口内に入り込むようにし、かつガスセンサのカバーの頭部と前記ハウジングのカバーの開口の周囲との間に、気密部材を設けることにより、ガスセンサのカバーの内部をハウジング内の他のスペースから気密にしたことを特徴とする。 The wall-embedded gas detection device of the present invention is a device in which a gas sensor is accommodated in a housing composed of a cover and a case, and an indoor gas is introduced into the gas sensor in the housing from an opening provided in the cover. The case can be embedded in the wall surface and connected to the wiring in the wall surface, and the gas sensor includes a gas sensor cover, a base, and a sensor body provided between the gas sensor cover and the base. A vent hole is provided only in the head of the cover of the gas sensor so that the head enters the opening of the cover of the housing, and the head of the cover of the gas sensor and the periphery of the opening of the cover of the housing The inside of the cover of the gas sensor is made airtight from other spaces in the housing by providing an airtight member in between. To do.

好ましくは、前記壁面内配線のアダプタと接続するための手段を前記ケースに設ける。 Preferably rather it is provided with means for connecting the adapter of the wall in line with the case.

この発明のガス検出方法では、カバーとケースとからなるハウジングにガスセンサを収容し、カバーに設けた開口から室内のガスをガスセンサへ導入してガスを検出し、前記ケースを壁面内に埋め込んで、前記カバーを室内に露出させ、かつ該ケースを壁面内の配線用アダプタに接続し、さらにガスセンサの周囲に気密部材を設けることにより、ハウジング内のスペースでガスセンサから離れた部分を前記開口に対して気密に保ち、これによって壁面内からハウジングを通って、前記開口へと通じるガス流路を遮断する。   In the gas detection method of the present invention, a gas sensor is housed in a housing composed of a cover and a case, gas is detected by introducing indoor gas into the gas sensor through an opening provided in the cover, and the case is embedded in a wall surface. The cover is exposed to the room, the case is connected to a wiring adapter in the wall surface, and an airtight member is provided around the gas sensor, so that a portion of the space in the housing away from the gas sensor is located with respect to the opening. It is kept airtight, thereby blocking the gas flow path leading from the inside of the wall surface to the opening through the housing.

発明者は、壁面埋め込み形ガス検出装置の感度が低下する機構がほぼ以下のようなものであることを解明した（図８参照）。高気密の建物で排気による換気を行うと、建物内のスペースは負圧になる。この負圧のために建物の内外に連通する壁面内の配管などが空気の供給路となり得る状態にあり、壁面内から室内へ向けての気流が生じ得る。ここで壁面に半分埋め込むようにガス検出装置を設置し、ガス検出装置のケースを壁面内の配線に接続すると、壁面内からガス検出装置のハウジング内を通り、カバーの開口から室内に抜ける流路が形成される。するとガスセンサの周囲には開口から室内に吹き出す気流が生じて、ガス濃度が低下し、見かけ上ガス感度が低下する。   The inventor has clarified that the mechanism by which the sensitivity of the wall-embedded gas detector decreases is as follows (see FIG. 8). When exhaust ventilation is performed in a highly airtight building, the space in the building becomes negative pressure. Due to this negative pressure, piping in the wall surface communicating with the inside and outside of the building can be an air supply path, and an air flow from the inside of the wall surface to the room can be generated. Here, when the gas detection device is installed so as to be half embedded in the wall surface, and the case of the gas detection device is connected to the wiring in the wall surface, the flow path passes from the inside of the wall surface through the housing of the gas detection device and through the cover opening to the room Is formed. Then, an airflow that blows out from the opening into the room is generated around the gas sensor, the gas concentration is lowered, and the gas sensitivity is apparently lowered.

この発明では、ガス検出装置のハウジング内のスペースでガスセンサから離れた部分、言い換えるとガスセンサの直ぐ周囲以外の部分を、パッキングやガスケットなどの気密部材により気密に封止する。これにより壁面内からハウジングを通りカバーの開口に達するガス流路を遮断でき、壁から室内へ向けての気流によるガス感度の低下を防止できる。   According to the present invention, a portion in the space in the housing of the gas detection device that is away from the gas sensor, in other words, a portion other than the immediate surroundings of the gas sensor is hermetically sealed by an airtight member such as a packing or a gasket. As a result, the gas flow path that reaches the opening of the cover through the housing from the inside of the wall surface can be blocked, and a decrease in gas sensitivity due to an air flow from the wall toward the room can be prevented.

以下に本発明を実施するための最適実施例を示す。   In the following, an optimum embodiment for carrying out the present invention will be shown.

図１〜図８に、実施例とその変形とを示す。これらの図において、２はガス検出部で、例えばフロンガス用の警報器の検出部で、フロンは比重が大きなガスなので、床からやや上部の位置に設置し、図６，図７に示す警報部６２とは別体にしてある。ガス検出部２には上部カバー４とケース８とからなるハウジングがあり、カバー４とケース８に囲まれたスペースがハウジング内のスペースで、その間にプリント基板６が収容され、プリント基板６に金属酸化物半導体などを用いたガスセンサ１０が半田などで取り付けられている。   1 to 8 show an embodiment and its modifications. In these figures, reference numeral 2 denotes a gas detection unit, for example, a detection unit of an alarm device for chlorofluorocarbon. Since chlorofluorocarbon is a gas having a large specific gravity, it is installed at a position slightly above the floor, and the alarm unit shown in FIGS. Separated from 62. The gas detection unit 2 has a housing composed of an upper cover 4 and a case 8. A space surrounded by the cover 4 and the case 8 is a space in the housing, and a printed circuit board 6 is accommodated between them. A gas sensor 10 using an oxide semiconductor or the like is attached with solder or the like.

図２，図３にガスセンサ１０の取付構造を示すと、１２はガスセンサの頂部の開口で、金網などを取り付け、１３はガスセンサのカバー、１４はベースで、これらの間にセンサ本体１５を設置し、リードとしてのピン１６がベース１４から突き出している。ガスセンサ１０で外部との間の通気性があるのは頂部の開口１２のみで、カバー１３の側面やベース１４には開口はなく、ピン１６はプリント基板６を貫通して半田１７で固定されている。このためピン１６の挿通用の開口は半田で塞がれ、プリント基板６の裏側に対してガスセンサ１０は気密な状態にある。   2 and 3 show the mounting structure of the gas sensor 10. Reference numeral 12 denotes an opening at the top of the gas sensor, a wire mesh is attached, 13 is a cover of the gas sensor, 14 is a base, and a sensor body 15 is installed between them. A pin 16 as a lead protrudes from the base 14. In the gas sensor 10, only the top opening 12 has air permeability to the outside, there is no opening on the side surface of the cover 13 or the base 14, and the pin 16 penetrates the printed circuit board 6 and is fixed by the solder 17. Yes. For this reason, the opening for inserting the pin 16 is closed with solder, and the gas sensor 10 is airtight with respect to the back side of the printed circuit board 6.

ガスセンサ１０の周囲には、カバー４の一部の筒体１８が設けられ、筒体１８の底部とプリント基板６との間には、パッキングやガスケットなどを用いた伸縮性のある環状の気密部材２０を配置してある。筒体１８の上部はカバー４につながり、筒体１８の上部とカバー４との間に隙間はなく、筒体１８の下部とプリント基板６との間には気密部材２０が設けてあるので、ガスセンサ１０の周囲のスペースは、ハウジング内の他のスペースから気密に保たれる。２２はカバー４に設けた開口で、ここではスリット状の開口にしてある。２４は動作表示用のＬＥＤで、窓２６からＬＥＤ２４の状態を覗けるようにしてある。開口２２はカバー４の中央部やや下側に位置するが、カバー４の下端などの側面部に設けても良い。またプリント基板６の他に、ガスセンサ１０を固定するための小さなプリント基板を設けて、該小基板にガスセンサ１０を取り付けても良い。   Around the gas sensor 10, a part of the cylinder 18 of the cover 4 is provided. Between the bottom of the cylinder 18 and the printed circuit board 6, a stretchable annular airtight member using packing, gaskets, or the like. 20 is arranged. Since the upper part of the cylinder 18 is connected to the cover 4, there is no gap between the upper part of the cylinder 18 and the cover 4, and an airtight member 20 is provided between the lower part of the cylinder 18 and the printed circuit board 6. The space around the gas sensor 10 is kept airtight from other spaces in the housing. Reference numeral 22 denotes an opening provided in the cover 4, which is a slit-like opening here. Reference numeral 24 denotes an operation display LED which allows the state of the LED 24 to be viewed from the window 26. The opening 22 is located slightly below the center of the cover 4, but may be provided on a side surface such as the lower end of the cover 4. In addition to the printed circuit board 6, a small printed circuit board for fixing the gas sensor 10 may be provided, and the gas sensor 10 may be attached to the small circuit board.

ガス検出部２は、ケース８の部分とカバー４の一部とがコンクリート壁３０に埋設されるように、例えば雄コネクタとしての接続金具３２により、アダプタ３１に設けた配線と接続してある。３４は電気配線用の配管で、アダプタ３１や配管３４はコンクリート壁３０内に埋設され、アダプタ３１の表面が壁のくぼみに露出し、このくぼみにガス検出部２のケース８とカバー４の一部が埋め込まれ、カバー４の表面は室内に露出し、電力線や信号線などが配管３４内を通っている。   The gas detection unit 2 is connected to the wiring provided in the adapter 31 by, for example, a connection fitting 32 as a male connector so that the case 8 part and a part of the cover 4 are embedded in the concrete wall 30. Reference numeral 34 denotes a pipe for electric wiring. The adapter 31 and the pipe 34 are embedded in the concrete wall 30, and the surface of the adapter 31 is exposed to a wall recess, and the case 8 and the cover 4 of the gas detection unit 2 are exposed to the recess. The surface of the cover 4 is exposed indoors, and power lines, signal lines and the like pass through the pipe 34.

図４に最初の変形例を示すと、カバー４に設けた、スリットの無い例えば円形状の開口に、ガスセンサ１０の頭部が入り込むようにし、ガスセンサ１０の頭部の側面と開口の周囲のカバーとの間に、ガスケットやパッキングなどの気密部材４０を設ける。ガスセンサ１０は頂面の開口１２の部分以外は気密なので、頭部の側面とカバー４の間を気密部材４０で封止すると、ハウジング内のスペースは室内から気密に保たれる。   FIG. 4 shows a first modification example, in which the head of the gas sensor 10 enters a circular opening provided in the cover 4 without a slit, for example, and covers the side surface of the head of the gas sensor 10 and the periphery of the opening. An airtight member 40 such as a gasket or a packing is provided between them. Since the gas sensor 10 is airtight except for the portion of the opening 12 on the top surface, when the space between the side surface of the head and the cover 4 is sealed with the airtight member 40, the space in the housing is kept airtight from the room.

図５に第２の変形例を示すと、５２は底のある筒状の樹脂製などの部材、言い換えるとコップ状の樹脂製などの部材で、その底部に設けた図示しない孔をピン１６がプリント基板６の反対側へと貫通する。筒体５２は僅かに弾性があって、あるいはピン１６の貫通部にパッキングなどをはめ込んで、ピン１６の貫通部が締め付けられ、この部分が気密になるようにする。筒体５２の上面とカバー４の開口５１の周囲の内面との間には、パッキングやガスケットなどの気密部材５０を設けて、この部分を気密に封止する。このためガスセンサ１０の周囲のスペースは、筒体５２と気密部材５０により、ハウジング内の他のスペースから気密に保たれる。   FIG. 5 shows a second modified example. Reference numeral 52 denotes a member made of a cylindrical resin having a bottom, in other words, a member made of a cup-shaped resin, and the pin 16 is provided with a hole (not shown) provided in the bottom. It penetrates to the opposite side of the printed circuit board 6. The cylindrical body 52 is slightly elastic or is fitted with a packing or the like in the through portion of the pin 16 so that the through portion of the pin 16 is tightened so that this portion is airtight. An airtight member 50 such as a packing or a gasket is provided between the upper surface of the cylindrical body 52 and the inner surface around the opening 51 of the cover 4, and this portion is hermetically sealed. Therefore, the space around the gas sensor 10 is kept airtight from the other spaces in the housing by the cylindrical body 52 and the airtight member 50.

図６にコンクリート壁３０へのガス検出装置の取り付け例を示す。なお図６の上側が上、下側が下で、ガス検出部２は床面６３のやや上部に取り付けられ、配管３４内の配線を利用して、ブザーなどを設けた警報部６２と接続され、また配管３４内の配線を介して集中監視盤などに接続されている。さらにガス検出部２や警報部６２の電源は、配管３４内の電力線から得るものとする。   FIG. 6 shows an example of attaching the gas detection device to the concrete wall 30. Note that the upper side of FIG. 6 is the upper side, the lower side is the lower side, and the gas detection unit 2 is attached to the slightly upper part of the floor surface 63 and is connected to the alarm unit 62 provided with a buzzer or the like using the wiring in the pipe 34. Further, it is connected to a centralized monitoring panel or the like via wiring in the pipe 34. Further, the power source of the gas detection unit 2 and the alarm unit 62 is obtained from a power line in the pipe 34.

気密性の高い建物で換気を施すと、室内は負圧になる。配管３４はコンクリート壁３０内を上下に貫通するなどにより、建物の外の空気と連通している場合が多い。このため配管３４からアダプタ３１，３３などを介して、ガス検出部２や警報部６２を通って室内に吹き出す気流が生じる。この気流は文字通りにガス検出部２や警報部６２の中を通るもの以外に、これらとコンクリート壁３０との間の隙間を通るものなどもある。   When ventilation is performed in a highly airtight building, the room becomes negative pressure. In many cases, the pipe 34 communicates with the air outside the building, for example, through the concrete wall 30 vertically. For this reason, an airflow is generated from the pipe 34 through the gas detector 2 and the alarm unit 62 through the adapters 31 and 33 and the like to the room. This airflow literally passes through the gas detection unit 2 and the alarm unit 62, and there are also those passing through the gap between them and the concrete wall 30.

ここでガスセンサ１０を、ハウジング内の他のスペースに対し気密にしないと、図１のアダプタ３１からケース８内のスペース，プリント基板６の小孔やハウジングとの隙間，プリント基板６とカバー４との間のスペース、並びに開口２２を通る流路が生じる。これは一つには、ケース８には金型の設計上などで小孔を設ける場合が多く、プリント基板６には余分の小孔があったり、ケース８やカバー４との間に隙間が残る場合が多いからである。またケース８とカバー４の嵌合部に隙間が残ると、ここから壁面内の空気が吹き込むことがある。   If the gas sensor 10 is not airtight with respect to other spaces in the housing, the space from the adapter 31 in FIG. 1 to the case 8, the small holes in the printed circuit board 6 and the gap between the housing, the printed circuit board 6 and the cover 4 As well as a flow path through the opening 22. For example, the case 8 is often provided with a small hole due to the design of the mold, and the printed circuit board 6 has an extra small hole or a gap between the case 8 and the cover 4. This is because it often remains. Further, if a gap remains in the fitting portion between the case 8 and the cover 4, air in the wall surface may blow from here.

そしてこのような流路が生じると、配管３４からの外気がガスセンサ１０の周囲を通って開口２２から室内スペース７５へ吹き出すことになる。吹き出す空気の流速が低くても、自然拡散のみで開口２２から室内空気をガスセンサ１０に導いているので、ガスセンサ１０の付近でのガス濃度は低下する。これに対して、カバー４の開口と、ハウジング内のスペースでガスセンサ１０の設置スペース以外の部分を気密にできれば、カバー４の開口２２から外に向かって吹き出す気流を無くし、ガス感度の低下を防止できる。   When such a flow path is generated, outside air from the pipe 34 passes through the periphery of the gas sensor 10 and blows out from the opening 22 to the indoor space 75. Even if the flow velocity of the blown-out air is low, the indoor air is guided from the opening 22 to the gas sensor 10 only by natural diffusion, so that the gas concentration in the vicinity of the gas sensor 10 decreases. On the other hand, if the opening of the cover 4 and the space inside the housing other than the installation space of the gas sensor 10 can be made airtight, the air flow that blows out from the opening 22 of the cover 4 is eliminated, and the gas sensitivity is prevented from being lowered. it can.

図７は断熱材を用いた実施例への応用を示す。７２は石膏ボードなどの内壁で、７３はガラスファイバーやロックウールなどの断熱材、７４は外壁である。この場合、配管３４は床下の空気などに連通しており、これ以外に断熱材７３も床下の空気などに連通することが多く、室内スペース７５が負圧になると、配管３４や断熱材７３からガス検出部２を通って室内へと吹き出す気流が生じやすくなる。そこでこの場合も、ガス検出部のカバーの開口を、ハウジング内のガスセンサ以外の部分から気密にする。   FIG. 7 shows an application to an embodiment using a heat insulating material. Reference numeral 72 denotes an inner wall such as a plaster board, 73 denotes a heat insulating material such as glass fiber or rock wool, and 74 denotes an outer wall. In this case, the pipe 34 communicates with the air under the floor, and the heat insulating material 73 communicates with the air under the floor in many cases. When the indoor space 75 becomes negative pressure, the pipe 34 and the heat insulating material 73 Airflow that blows out into the room through the gas detector 2 is likely to occur. Therefore, also in this case, the opening of the cover of the gas detection unit is made airtight from a portion other than the gas sensor in the housing.

図８はフロンガスとしてのＲ−１３４ａに対する応答波形を示し、実施例は図１のガス検出部を用いたもので、図２は図１のガス検出部２から気密部材２０を除いたものである。比較例は、実施例のガス検出装置を壁面に埋設するのではなく、壁面に設けたコンセントに適宜のアダプタを介して取り付けたものである。比較例と実施例や従来例との違いは、比較例ではガス検出部が壁面に埋設されていないが、実施例や従来例ではガス検出部のケース部分とカバーの一部が壁面内に埋設されている点である。これらのガス検出装置はいずれもＲ−１３４ａ ２０００ppmで、図８に鎖線で示したレベルの出力が生じるように設定されており、４ｍ3 程度の内容積の小室内にＲ−１３４ａを２０００ppm分注入した。実施例と比較例の波形はほぼ同等であるが、従来例では出力が小さく、同じレベルの出力を発生させるのに必要なガス濃度に換算すると、従来例では実施例の約１／２の感度に低下している。 FIG. 8 shows a response waveform to R-134a as a chlorofluorocarbon gas. In the embodiment, the gas detector shown in FIG. 1 is used, and FIG. 2 is obtained by removing the airtight member 20 from the gas detector 2 shown in FIG. . In the comparative example, the gas detection device of the embodiment is not embedded in the wall surface, but is attached to an outlet provided on the wall surface via an appropriate adapter. The difference between the comparative example and the example or the conventional example is that the gas detection part is not embedded in the wall surface in the comparative example, but the case part of the gas detection part and a part of the cover are embedded in the wall surface in the example or the conventional example. It is a point that has been. All of these gas detection devices are set to generate R-134a 2000 ppm, and the level of output shown by the chain line in FIG. 8 is generated. Injecting 2000 ppm of R-134a into a small chamber having an internal volume of about 4 m 3. did. The waveforms of the example and the comparative example are almost the same, but the output in the conventional example is small, and when converted to the gas concentration necessary to generate the same level of output, the sensitivity in the conventional example is about half that of the example. It has dropped to.

実施例ではフロン警報器への応用を示したが、ＣＯ警報器やメタン警報器などの他のガス検出装置でも良い。また実施例ではフロン警報器であるため、ガス検出部と警報部とを分離したが、これらを一体にしても良い。また集中監視装置などの接続は任意である。
In the embodiment, application to a chlorofluorocarbon alarm is shown, but other gas detection devices such as a CO alarm and a methane alarm may be used. Moreover, since it is a Freon alarm device in an Example, although the gas detection part and the alarm part were isolate | separated, you may integrate these. Connection of a centralized monitoring device or the like is optional.

実施例のガス検出装置の断面図Sectional view of the gas detector of the embodiment 図１のii-ii方向拡大断面図で、実施例のガス検出装置でのガスセンサの周囲の配置を示すIt is an ii-ii direction expanded sectional view of Drawing 1, and shows the arrangement around the gas sensor in the gas detector of an example. ガスセンサのプリント基板への取付を示す図Diagram showing mounting of gas sensor to printed circuit board 変形例のガス検出装置の要部断面図Cross-sectional view of the principal part of a modified gas detector 他の変形例のガス検出装置の要部断面図Sectional drawing of the principal part of the gas detector of another modification コンクリート壁への実施例のガス検出装置の取付を示す鉛直方向断面図Vertical section showing the installation of the gas detector of the example to the concrete wall 断熱材を充填した壁への実施例のガス検出装置の取付を示す鉛直方向断面図Vertical sectional view showing attachment of the gas detector of the embodiment to the wall filled with heat insulating material 実施例のガス検出装置と、ガスセンサの周囲をケースの他の部分から気密にしなかった従来例、及び壁面内に埋め込まないように取り付けた比較例での、フロンガスへの応答波形を示す特性図The characteristic diagram which shows the response waveform to the Freon gas in the gas detector of an Example, the conventional example which did not make the circumference | surroundings of a gas sensor airtight from the other part of a case, and the comparative example attached so that it might not be embedded in a wall surface

符号の説明Explanation of symbols

２ ガス検出部
４ カバー
６ プリント基板
８ ケース
１０ ガスセンサ
１２ 開口
１３ カバー
１４ ベース
１５ センサ本体
１６ ピン
１７ 半田
１８ 筒体
２０ 気密部材
２２ 開口
２４ ＬＥＤ
２６ 窓
３０ コンクリート壁
３１，３３ アダプタ
３２ 接続金具
３４ 配管
４０，５０ 気密部材
５１ 開口
５２ 筒体
６２ 警報部
６３ 床面
７０ 壁
７２ 内壁
７３ 断熱材
７４ 外壁
７５ 室内スペース 2 Gas detector 4 Cover 6 Printed circuit board 8 Case 10 Gas sensor 12 Opening 13 Cover 14 Base 15 Sensor body 16 Pin 17 Solder 18 Cylindrical body 20 Airtight member 22 Opening 24 LED
26 Window 30 Concrete wall 31, 33 Adapter 32 Connecting bracket 34 Piping 40, 50 Airtight member 51 Opening 52 Cylindrical body 62 Alarm part 63 Floor surface 70 Wall 72 Inner wall 73 Heat insulating material 74 Outer wall 75 Indoor space

Claims (3)

カバーとケースとからなるハウジングにガスセンサを収容して、カバーに設けた開口から室内のガスをハウジング内のガスセンサへ導入するようにした装置において、
前記ケースを壁面内への埋め込みと壁面内の配線への接続とが自在にすると共に、
前記ガスセンサは、ガスセンサのカバーと、ベースと、ガスセンサのカバーとベースとの間に設けたセンサ本体とから成り、
前記ガスセンサの周囲を覆う筒状の部材を、ガスセンサのカバー及びベースとは別体に、前記ハウジング内に設けて、前記筒状の部材とハウジングのカバーの開口の周囲との間、もしくは該部材とガスセンサを搭載したプリント基板との間に気密部材を設けることにより、前記筒状の部材の内部をハウジング内の他のスペースから気密にしたことを特徴とする、壁面埋め込み形のガス検出装置。 In a device in which a gas sensor is housed in a housing composed of a cover and a case, and indoor gas is introduced into the gas sensor in the housing from an opening provided in the cover.
While allowing the case to be embedded in the wall surface and connected to the wiring in the wall surface,
The gas sensor comprises a gas sensor cover, a base, and a sensor body provided between the gas sensor cover and the base,
A cylindrical member that covers the periphery of the gas sensor is provided in the housing separately from the cover and base of the gas sensor, or between the cylindrical member and the periphery of the opening of the cover of the housing, or the member A wall-embedded gas detection device characterized in that an airtight member is provided between the gas sensor and a printed circuit board on which the gas sensor is mounted, thereby making the inside of the cylindrical member airtight from other spaces in the housing . カバーとケースとからなるハウジングにガスセンサを収容して、カバーに設けた開口から室内のガスをハウジング内のガスセンサへ導入するようにした装置において、
前記ケースを壁面内への埋め込みと壁面内の配線への接続とが自在にすると共に、
前記ガスセンサは、ガスセンサのカバーと、ベースと、ガスセンサのカバーとベースとの間に設けたセンサ本体とから成り、
前記ガスセンサのカバーの頭部にのみ通気孔を設けて、該頭部がハウジングのカバーの開口内に入り込むようにし、
かつガスセンサのカバーの頭部と前記ハウジングのカバーの開口の周囲との間に、気密部材を設けることにより、ガスセンサのカバーの内部をハウジング内の他のスペースから気密にしたことを特徴とする、壁面埋め込み形のガス検出装置。 In a device in which a gas sensor is housed in a housing composed of a cover and a case, and indoor gas is introduced into the gas sensor in the housing from an opening provided in the cover.
While allowing the case to be embedded in the wall surface and connected to the wiring in the wall surface,
The gas sensor comprises a gas sensor cover, a base, and a sensor body provided between the gas sensor cover and the base,
Providing a vent hole only in the head of the cover of the gas sensor so that the head enters the opening of the cover of the housing;
And, by providing an airtight member between the head of the cover of the gas sensor and the periphery of the opening of the cover of the housing, the inside of the cover of the gas sensor is made airtight from other spaces in the housing. Wall-embedded gas detector. 前記壁面内配線のアダプタと接続するための手段を前記ケースに設けたことを特徴とする、請求項１または２の壁面埋め込み形のガス検出装置。
 The wall-embedded gas detection device according to claim 1 or 2 , wherein means for connecting to the adapter for the in-wall wiring is provided in the case.
JP2003432286A 2003-12-26 2003-12-26 Wall-mounted gas detector Expired - Fee Related JP4197645B2 (en)

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