JP4828562B2 - smoke detector - Google Patents

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JP4828562B2
JP4828562B2 JP2008089472A JP2008089472A JP4828562B2 JP 4828562 B2 JP4828562 B2 JP 4828562B2 JP 2008089472 A JP2008089472 A JP 2008089472A JP 2008089472 A JP2008089472 A JP 2008089472A JP 4828562 B2 JP4828562 B2 JP 4828562B2
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fan
detection unit
smoke
housing
smoke detection
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JP2009245062A (en
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健一 加藤
博之 横田
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Nohmi Bosai Ltd
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Nohmi Bosai Ltd
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Priority to JP2008089472A priority Critical patent/JP4828562B2/en
Priority to KR1020090011300A priority patent/KR101529734B1/en
Priority to CN2009101181395A priority patent/CN101551932B/en
Priority to CN201110362942.0A priority patent/CN102496233B/en
Priority to AU2009200920A priority patent/AU2009200920B2/en
Priority to US12/382,389 priority patent/US8225656B2/en
Priority to EP12163489A priority patent/EP2474958A1/en
Priority to EP12163490A priority patent/EP2474959A1/en
Priority to EP09250785.4A priority patent/EP2109351B1/en
Priority to TW103125284A priority patent/TWI499368B/en
Priority to TW098110438A priority patent/TWI499365B/en
Publication of JP2009245062A publication Critical patent/JP2009245062A/en
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Description

この発明は、空気中に浮遊する煙等の汚染物質を光学的に検知する煙感知器に関するものである。   The present invention relates to a smoke detector that optically detects contaminants such as smoke floating in the air.

火災予防や煙発生時の検知システムとして、或いは一定の環境保全を必要とする半導体製造工場や食品工場等において煙感知器が使用されている。   Smoke detectors are used as a fire prevention and smoke detection system or in semiconductor manufacturing factories and food factories that require a certain level of environmental protection.

この種の煙感知器は、監視区域からサンプリング管を介して空気を吸引する吸引装置と、吸引装置によって吸引された空気が導入されて、その導入された空気に含まれる煙粒子を検出する検煙装置とを備えているが、従来の煙感知器において、検煙装置と吸引装置は煙感知器の本体に内蔵されていて、両者は長い配管を介して連通され、煙感知器の筐体内に離間して配置されている（例えば、特許文献１参照）。   This type of smoke detector includes a suction device that sucks air from a monitoring area through a sampling tube, and a detector that detects smoke particles contained in the introduced air when air sucked by the suction device is introduced. In the conventional smoke detector, the smoke detector and the suction device are built in the main body of the smoke detector, and both are communicated with each other through a long pipe. (See, for example, Patent Document 1).

特許第３７１４９２６号公報Japanese Patent No. 3714926

従来においては、前記の様に、煙感知器の筐体内において検煙装置部と吸引装置部が長い配管を介して連通され、筐体内に離間して配置されているので、両者間に長い配管と距離が必要なため、その分、配管部品コストの低減化ができず、又煙感知器の筐体の小型化もできなかった。   Conventionally, as described above, the smoke detector unit and the suction device unit are communicated with each other via a long pipe in the casing of the smoke detector and are spaced apart from each other in the casing. Therefore, it was not possible to reduce the cost of piping parts and to reduce the size of the smoke detector housing.

この発明は、前記の事情に鑑み、配管部品コストの低減化ができ、又筐体の小型化ができる煙感知器を提供することを目的とする。   In view of the above circumstances, an object of the present invention is to provide a smoke detector capable of reducing the cost of piping parts and reducing the size of a housing.

この発明は、略箱状の筐体を備えると共に、該筐体内に、サンプリング用配管からサンプリング空気を吸引させるファンと、該サンプリング用配管からのサンプリング空気が導入される煙検出ユニットとを一組のみ備えた煙感知器において、該筐体に、該ファンと該煙検出ユニットとを近接させつつ、それらが取り付けられる横方向に延在する台座を介して上下に部分的に重ねて配置すると共に、該ファンの中央の吸気口と、該煙検出ユニットの側方に隣接して設けられ、該サンプリング用配管からのサンプリング空気を該筐体内に流入させる流入部とを、それらが該台座に形成された開口によって連通するように、該台座を介して上下に重ねて配置して収納する収納室を設けたことを特徴とする煙感知器である。 The present invention is provided with a substantially box-shaped housing, within the housing, a fan for sucking the sampled air from the sampling pipe, a set and a smoke detection unit sampling air from the sampling pipe is introduced in smoke detector having only the casing, while close to the said fan and該煙detection unit, with which they are disposed partially overlapped in the vertical through the base extending laterally mounted A central air inlet of the fan, and an inflow portion provided adjacent to the side of the smoke detection unit and allowing sampling air from the sampling pipe to flow into the housing, are formed on the base The smoke detector is characterized in that a storage chamber is provided in which the storage chamber is arranged so as to be stacked one above the other through the pedestal so as to communicate with each other through the opening .

この発明によれば、ファンと煙感知器を１組のみ備えた煙感知器において、前記のような収納室を設けたことで、配管部品コストを低減することができると共に組立コストも低減することができ、又、ファンと煙検出ユニットとの間の距離を短くすることができ、筐体の小型化ができる。 According to the present invention, in the smoke detector having only one set of the fan and the smoke detector, by providing the storage chamber as described above, it is possible to reduce the cost of the piping parts and the assembly cost. In addition, the distance between the fan and the smoke detection unit can be shortened, and the housing can be downsized.

この発明の実施の形態を図１乃至４に基づき説明する。尚、図１はこの発明の煙感知器の主要な構成を示した説明図、図２は同上のファンと煙検出ユニットを組み立てた状態の要部斜視図（（ａ）が上面側を示し、（ｂ）が下面側を示す。）、図３は同上の状態の側面図、図４は同上のファンと煙検出ユニット等が組立てられ、筐体内に収納されている状態の断面図である。   An embodiment of the present invention will be described with reference to FIGS. 1 is an explanatory view showing the main configuration of the smoke detector of the present invention, FIG. 2 is a perspective view of the main part in a state where the fan and the smoke detection unit are assembled ((a) shows the upper surface side, FIG. 3 is a side view of the above-described state, and FIG. 4 is a cross-sectional view of the state in which the fan, the smoke detection unit, and the like are assembled and housed in the housing.

図１に示す様に、煙感知器１には、暗箱２１を有する煙検出ユニット２と、監視区域に敷設された図示しないサンプリング用配管から流入部４０を介して流入する空気Ａを感知対象となるサンプリングエアＳＡとして導入路４を介して煙検出ユニット２に送るファン３と、煙検出ユニット２内に配設した発光素子１１と、フォトダイオード等の受光素子１２と、ファン３や空気の流量を測定するエアフローセンサ１３と、発光素子１１と受光素子１２とエアフローセンサ１３等に電源を供給する電源部１４と、受光素子１２に接続させた火災判別部１５とを備えている。尚、導入路４はファン３の二次側から流路分岐部３３において分岐し、煙検出ユニット２からサンプリングエアＳＡを還流させる還流路６がファン３の二次側の流路合流部３２において合流しており、流路合流部３２と流路分岐部３３との間に生じる差圧（流路合流部３２における流速を流路分岐部３３における流速よりも速いものとすることによって両者間に差圧を生じさせることができ、例えば流路合流部３２をファン３の回転翼の周縁に近い位置に設け、流路分岐部３３を回転翼の周縁から遠い位置に設けることで両者間に差圧を生じさせることができる。）によって、サンプリングエアＳＡが導入路４からフィルタ５で濾過された上で煙検出ユニット２を通過し、そして還流路６からファン３の二次側に還流される様になっている。   As shown in FIG. 1, the smoke detector 1 has a smoke detection unit 2 having a dark box 21 and air A flowing in from a sampling pipe (not shown) laid in a monitoring area through an inflow portion 40 as a detection target. As a sampling air SA, a fan 3 sent to the smoke detection unit 2 via the introduction path 4, a light emitting element 11 disposed in the smoke detection unit 2, a light receiving element 12 such as a photodiode, and the flow rate of the fan 3 and air An air flow sensor 13 that measures power, a light source 11, a light receiving element 12, a power source 14 that supplies power to the air flow sensor 13, and the like, and a fire determination unit 15 that is connected to the light receiving element 12. The introduction path 4 branches from the secondary side of the fan 3 at the flow path branching section 33, and the reflux path 6 for recirculating the sampling air SA from the smoke detection unit 2 is at the flow path joining section 32 on the secondary side of the fan 3. The differential pressure generated between the flow path merge section 32 and the flow path branch section 33 (by making the flow velocity in the flow path merge section 32 faster than the flow speed in the flow path branch section 33) A differential pressure can be generated. For example, the flow path merging portion 32 is provided at a position close to the peripheral edge of the rotor blade of the fan 3 and the flow path branching portion 33 is provided at a position far from the peripheral edge of the rotary blade. Thus, the sampling air SA is filtered by the filter 5 from the introduction path 4, passes through the smoke detection unit 2, and is refluxed from the reflux path 6 to the secondary side of the fan 3. It is like.

煙検出ユニット２の暗箱２１の中央部には、検煙部２５が設けられ、この検煙部２５をサンプリングエアＳＡが通過し、その際に光学的に煙検知がなされる様になっている。尚、２３は遮光部２２に設けた光トラップ、２４は集光レンズ、２６はアパーチャである。   A smoke detector 25 is provided at the center of the dark box 21 of the smoke detection unit 2, and the sampling air SA passes through the smoke detector 25, and at that time optical smoke detection is performed. . Reference numeral 23 denotes an optical trap provided in the light shielding unit 22, 24 denotes a condenser lens, and 26 denotes an aperture.

又、火災判別部１５は、受光素子１２の出力信号Ｓを増幅する増幅回路と、その増幅回路を検出レベルに変換するＡ／Ｄ変換器と、検出レベルが予め設定された閾値以上になった時に火災と判別する比較回路等を備えている。   In addition, the fire determination unit 15 has an amplification circuit that amplifies the output signal S of the light receiving element 12, an A / D converter that converts the amplification circuit to a detection level, and a detection level that is equal to or higher than a preset threshold value. It is equipped with a comparison circuit that sometimes identifies fire.

図１においては、説明上、ファン３と煙検出ユニット２とを離間させて図示しているが、実際には、図２乃至４に示す様に、両者は近接し、上下に部分的に重なって、段違いに配置されている。   In FIG. 1, for the sake of explanation, the fan 3 and the smoke detection unit 2 are illustrated as being separated from each other, but actually, as shown in FIGS. 2 to 4, they are close to each other and partially overlap vertically. Are arranged in steps.

具体的には、図２及び図３に示す様に、ファン３が台座３０の上面３０ａに取り付けられ、略Ｌ字状の煙検出ユニット２は台座３０の下面３０ｂに取り付けられており、両者は近接して、台座３０を介して上下に部分的に重なって、上下二段の段違いに配置されれている。尚、ファン３と煙検出ユニット２は上下に部分的に重なってはいるが、ファン３の中央の吸気口３ａのある位置においては両者は重ならない様に配置されており、ファン３の吸気口３ａと台座３０を介して上下に重なる位置には、煙検出ユニット２の側方に隣接して流入部４０が設けられている。又、この流入部４０には台座３０を貫通して、ファン３の吸気口３ａに対向し、流入部４０と吸気口３ａとを連通させる開口４０ａが形成されている。   Specifically, as shown in FIGS. 2 and 3, the fan 3 is attached to the upper surface 30a of the pedestal 30, and the substantially L-shaped smoke detection unit 2 is attached to the lower surface 30b of the pedestal 30. Adjacent to each other, the pedestals 30 are partially overlapped vertically so as to be arranged in two steps. Although the fan 3 and the smoke detection unit 2 partially overlap each other in the vertical direction, the fan 3 and the smoke detection unit 2 are arranged so that they do not overlap at a position where the central air inlet 3a of the fan 3 is located. An inflow portion 40 is provided adjacent to the side of the smoke detection unit 2 at a position that overlaps with the pedestal 30 in the vertical direction. The inflow portion 40 is formed with an opening 40a that penetrates the pedestal 30 and faces the intake port 3a of the fan 3 so that the inflow portion 40 communicates with the intake port 3a.

図４に示す様に、台座３０に設けられた煙検出ユニット２とファン３は、筐体５０と一体に形成された収納室４５内に前記の如き配置で収納されている。収納室４５の上部開口は収納室カバー（蓋体）４６でパッキン４７を介して封止され、筐体５０の上部開口は開閉自在の筐体カバー５１によって塞がれている。尚、煙検出ユニット２に隣接して設けられる流入部４０はそれを下側から覆う収納室４５の一部によって管状にされている。   As shown in FIG. 4, the smoke detection unit 2 and the fan 3 provided on the pedestal 30 are stored in the storage chamber 45 formed integrally with the housing 50 in the above-described arrangement. The upper opening of the storage chamber 45 is sealed with a storage chamber cover (lid body) 46 via a packing 47, and the upper opening of the housing 50 is closed by a housing cover 51 that can be freely opened and closed. The inflow portion 40 provided adjacent to the smoke detection unit 2 is formed into a tubular shape by a part of the storage chamber 45 that covers it from below.

そして、監視区域に敷設される図示しないサンプリング管からの空気は、流入部４０を介してファン３により吸引され、ファン３の排気口３ｂから排気される空気の一部が分流され、サンプリングエアＳＡとして煙検出ユニット２の流入口２ａ及び流出口２ｂを介して暗箱２１内の検煙部２５を通過し、そこで光学的に煙検知がなされてから、ファン３の二次側に還流される様になっている。尚、ファン３の排気口３ｂは、筐体５０の外部にサンプリングエアを排気する図示しない排気管に接続されている。   Then, air from a sampling pipe (not shown) installed in the monitoring area is sucked by the fan 3 via the inflow portion 40, and a part of the air exhausted from the exhaust port 3b of the fan 3 is diverted to obtain the sampling air SA. The smoke detection unit 2 passes through the smoke detection unit 25 in the dark box 21 through the inlet 2a and the outlet 2b, and is optically detected there, and then returned to the secondary side of the fan 3. It has become. The exhaust port 3 b of the fan 3 is connected to an exhaust pipe (not shown) that exhausts sampling air to the outside of the housing 50.

ここで、筐体５０を小型化するための具体的な方法を説明する。まず、略Ｌ字状の煙検出ユニット２の側方の隙間にファン３の吸気口３ａに通じる流入部４０を配置した。また、台座３０が煙検出ユニット２のカバーとファン３の吸気部分の蓋を兼用した。さらに、煙検出ユニット２の流入口２ａと流出口２ｂをファン３の排気口３ａに近い位置としたことなどである。これにより、ファン３の排気口３ａから流路分岐部３３、流路分岐部３３から検出ユニット２の流入口２ａ、検出ユニット２の流出口２ｂから流路合流部３２に必要な配管の合計長さは約２００ｍｍ程度だけでよくなる。また、収納室４５が必要な空間は、例えば、縦が約１４０〜１６０ｍｍ、横が１００〜１２０ｍｍ、高さが約５０〜７０ｍｍであればよくなり、筐体５０を十分に小型化できる。   Here, a specific method for reducing the size of the housing 50 will be described. First, the inflow part 40 which leads to the inlet 3a of the fan 3 was arranged in the gap on the side of the substantially L-shaped smoke detection unit 2. The pedestal 30 also serves as a cover for the smoke detection unit 2 and a cover for the intake portion of the fan 3. Furthermore, the inflow port 2a and the outflow port 2b of the smoke detection unit 2 are positioned close to the exhaust port 3a of the fan 3. Thereby, the total length of the pipes required from the exhaust port 3a of the fan 3 to the flow path branching section 33, from the flow path branching section 33 to the inlet 2a of the detection unit 2, and from the outlet 2b of the detection unit 2 to the flow path junction 32. Only about 200 mm is sufficient. Moreover, the space which needs the storage chamber 45 should just be about 140-160 mm in length, 100-120 mm in width, and about 50-70 mm in height, for example, and the housing | casing 50 can fully be reduced in size.

前記の様に、この発明の煙感知器１においては、煙検出ユニット２とファン３とを、上下に部分的に重なりつつ、段違いの配置で近接して筐体５０の収納室４５内に収納することができるので、煙検出ユニット２とファン３との間の配管部品を短くすることができ、又筐体５０を小型なものにすることができる。   As described above, in the smoke detector 1 according to the present invention, the smoke detection unit 2 and the fan 3 are stored in the storage chamber 45 of the casing 50 in a stepwise arrangement while being partially overlapped vertically. Therefore, the piping parts between the smoke detection unit 2 and the fan 3 can be shortened, and the housing 50 can be made small.

また、収納室４５は、収納室カバー（蓋体）４６を取付する際に、板状のパッキン４７で封止されているので浸水しない。さらに、煙検出ユニット２およびファン３にそれぞれ防水機構を設ける必要がないため、部品の低コスト化ができる。   Further, the storage chamber 45 is not submerged because it is sealed with a plate-shaped packing 47 when the storage chamber cover (lid) 46 is attached. Furthermore, since it is not necessary to provide a waterproof mechanism for each of the smoke detection unit 2 and the fan 3, the cost of parts can be reduced.

以上、この発明の煙感知器１をファン３を煙検出ユニット２の上流側に設けつつ、ファン３と煙検出ユニット２を上下に近接させて配置する場合を例に説明したが、ファン３を煙検出ユニット２の下流側に設けつつ、ファン３と煙検出ユニット２を上下に配置する様にすることも可能である。   As described above, the smoke detector 1 of the present invention has been described by taking as an example the case where the fan 3 and the smoke detection unit 2 are arranged close to each other while the fan 3 is provided on the upstream side of the smoke detection unit 2. It is possible to arrange the fan 3 and the smoke detection unit 2 vertically while providing them on the downstream side of the smoke detection unit 2.

この発明の煙感知器の実施の形態を示し、煙検知器の主要構成の説明図である。The embodiment of the smoke detector of this invention is shown and it is explanatory drawing of the main structures of a smoke detector. 同上を示し、煙感知器におけるファンと煙検出ユニットを組み立てた状態の要部斜視図で、（ａ）が上面側を示し、（ｂ）が下面側を示した図である。It is a principal part perspective view of the state which assembled the fan and smoke detection unit in a smoke sensor, showing the same as above, (a) showing the upper surface side, (b) showing the lower surface side. 同上を示し、同上の状態の側面図である。It is a side view of the state shown same as the above. 同上を示し、ファンと煙検出ユニット等が組立てられ、筐体内に収納されている状態の断面図である。It is sectional drawing which shows the same as the above and the fan, the smoke detection unit, etc. are assembled and accommodated in the housing | casing.

符号の説明Explanation of symbols

１ 煙検知器
２ 煙検出ユニット
３ ファン
３ａ 吸気口
３０ 台座
４０ 流入部
４０ａ 開口
４５ 収納室
４６ 収納室カバー（蓋体）
５０ 筐体 DESCRIPTION OF SYMBOLS 1 Smoke detector 2 Smoke detection unit 3 Fan 3a Inlet 30 Pedestal 40 Inflow part 40a Opening 45 Storage chamber 46 Storage chamber cover (lid body)
50 cases

Claims (1)

略箱状の筐体を備えると共に、該筐体内に、サンプリング用配管からサンプリング空気を吸引させるファンと、該サンプリング用配管からのサンプリング空気が導入される煙検出ユニットとを一組のみ備えた煙感知器において、
該筐体に、該ファンと該煙検出ユニットとを近接させつつ、それらが取り付けられる横方向に延在する台座を介して上下に部分的に重ねて配置すると共に、該ファンの中央の吸気口と、該煙検出ユニットの側方に隣接して設けられ、該サンプリング用配管からのサンプリング空気を該筐体内に流入させる流入部とを、それらが該台座に形成された開口によって連通するように、該台座を介して上下に重ねて配置して収納する収納室を設けたことを特徴とする煙感知器。 Smoke provided with a substantially box-shaped housing, within the housing, a fan for sucking the sampled air from the sampling pipe, and a smoke detection unit sampling air from the sampling pipe is introduced with only one set In the sensor
In the housing, said while the fan is close to each and該煙detection unit, with which they are disposed partially overlapped in the vertical through the base extending laterally mounted, the center of the inlet of the fan And an inflow portion that is provided adjacent to the side of the smoke detection unit and allows sampling air from the sampling pipe to flow into the housing so that they communicate with each other through an opening formed in the base. A smoke detector, characterized in that a storage chamber is provided in which the storage chamber is disposed so as to be stacked one above the other through the pedestal .
JP2008089472A 2008-03-31 2008-03-31 smoke detector Active JP4828562B2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP2008089472A JP4828562B2 (en) 2008-03-31 2008-03-31 smoke detector
KR1020090011300A KR101529734B1 (en) 2008-03-31 2009-02-12 Electric instrument and smoke sensing device
CN2009101181395A CN101551932B (en) 2008-03-31 2009-03-04 Electronic instrument and smoke detector
CN201110362942.0A CN102496233B (en) 2008-03-31 2009-03-04 Electrical device and smoke detector
AU2009200920A AU2009200920B2 (en) 2008-03-31 2009-03-10 Electrical device and smoke detector
US12/382,389 US8225656B2 (en) 2008-03-31 2009-03-16 Electrical device and smoke detector
EP12163489A EP2474958A1 (en) 2008-03-31 2009-03-20 Electrical device and smoke detector
EP12163490A EP2474959A1 (en) 2008-03-31 2009-03-20 Electrical device and smoke detector
EP09250785.4A EP2109351B1 (en) 2008-03-31 2009-03-20 Electrical device housing
TW103125284A TWI499368B (en) 2008-03-31 2009-03-30 Smoke sensor
TW098110438A TWI499365B (en) 2008-03-31 2009-03-30 Electrical machines and smoke sensors

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JPS50140053A (en) * 1974-04-26 1975-11-10
JPS60346A (en) * 1983-06-16 1985-01-05 Nohmi Bosai Kogyo Co Ltd Fire detector
JP3216947B2 (en) * 1993-10-06 2001-10-09 日本原子力研究所 Disaster prevention system with sampling tube suction system
JP2004097289A (en) * 2002-09-05 2004-04-02 Sharp Corp Toothbrush storage device with disinfecting function
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