JP2009245063A - Smoke detector - Google Patents

Smoke detector Download PDF

Info

Publication number
JP2009245063A
JP2009245063A JP2008089473A JP2008089473A JP2009245063A JP 2009245063 A JP2009245063 A JP 2009245063A JP 2008089473 A JP2008089473 A JP 2008089473A JP 2008089473 A JP2008089473 A JP 2008089473A JP 2009245063 A JP2009245063 A JP 2009245063A
Authority
JP
Japan
Prior art keywords
fan
smoke detector
smoke
housing
detection unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2008089473A
Other languages
Japanese (ja)
Other versions
JP4885900B2 (en
Inventor
Kenichi Kato
健一 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nohmi Bosai Ltd filed Critical Nohmi Bosai Ltd
Priority to JP2008089473A priority Critical patent/JP4885900B2/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 EP09250785.4A priority patent/EP2109351B1/en
Priority to EP12163489A priority patent/EP2474958A1/en
Priority to EP12163490A priority patent/EP2474959A1/en
Priority to TW103125284A priority patent/TWI499368B/en
Priority to TW098110438A priority patent/TWI499365B/en
Publication of JP2009245063A publication Critical patent/JP2009245063A/en
Application granted granted Critical
Publication of JP4885900B2 publication Critical patent/JP4885900B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoke detector capable of making it difficult for heat or vibration to transfer, between a smoke detector or a suction device and a control substrate, and making it difficult for impact, or the like to transfer which are applied to a housing to the smoke detector or the suction device. <P>SOLUTION: In this smoke detector is provided with a fan 3 for sucking sampling air from wiring for sampling; and a smoke detection unit 2, to which the sampling air from the wiring for sampling is introduced in an almost box-shaped housing 50, the housing 50 is provided with a chamber 45, in which the fan 3 or the smoke detection unit 2 are stored, and a sidewall 57 of the chamber 45 arranged with a prescribed interval in a control substrate storage part 56 of the housing 50, is configured as a double structure. <P>COPYRIGHT: (C)2010,JPO&INPIT

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、従来の煙検知器において、検煙装置と吸引装置は制御基板（制御装置）と同じ空間内に収納されている（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 housed in the same space as the control board (control device) (for example, see 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制御基板と同じ空間に収納されており、両者間には仕切りが何等設けられていないので、例えば、煙感知器が駆動中に、制御基板の電源部からの熱が検煙装置や吸引装置に伝わってしまったり、吸引装置の振動が制御基板に伝わってしまったりして、互いに悪影響を及ぼすことがあった。又、吸引装置はその排気口が煙感知器の筐体の側壁に設けられるが、筐体に外力による衝撃が加わると、それが配管部品を介して吸引装置や検煙装置に伝わってしまい、悪影響を及ぼすことがあった。   Conventionally, as described above, the smoke detector unit and the suction device unit are housed in the same space as the control board in the smoke detector housing, and no partition is provided between them, for example, While the smoke detector is operating, heat from the power supply part of the control board is transmitted to the smoke detector and suction device, and vibration of the suction device is transmitted to the control board, which may adversely affect each other. was there. In addition, the suction port of the suction device is provided on the side wall of the smoke detector housing, but when the impact due to external force is applied to the housing, it is transmitted to the suction device and smoke detector through the piping parts, There was an adverse effect.

この発明は、前記の事情に鑑み、検煙装置や吸引装置と制御基板との間で熱や振動等が伝わり難くすることができ、又筐体に加わる衝撃等が検煙装置や吸引装置に伝わり難くすること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, the present invention can make it difficult for heat, vibration, and the like to be transmitted between the smoke detector and the suction device and the control board, and an impact applied to the housing is applied to the smoke detector and the suction device. An object of the present invention is to provide a smoke detector that can be made difficult to transmit.

この発明は、略箱状の筐体内に、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備えた煙感知器において、該筐体に該ファン又は該煙検出ユニットを収納する収納室を設け、該筐体の回路基板収納部に所定の間隔をあけて並ぶ該収納室の側壁を二重構造としたことを特徴とする煙感知器である。   The present invention provides a smoke detector comprising a fan for sucking sampling air from a sampling pipe and a smoke detection unit into which sampling air from the sampling pipe is introduced in a substantially box-shaped casing. Smoke characterized in that a storage chamber for storing the fan or the smoke detection unit is provided in the body, and a side wall of the storage chamber arranged at a predetermined interval in the circuit board storage portion of the housing has a double structure It is a sensor.

又、この発明は、該煙感知器であって、該筐体の側壁を二重構造としたことを特徴とする煙感知器である。   The present invention also provides the smoke detector, wherein the side wall of the casing has a double structure.

又、この発明は、該煙感知器であって、該収納室と該筐体とを一体に形成したことを特徴とする煙感知器である。   The present invention also provides the smoke detector, wherein the storage chamber and the housing are integrally formed.

この発明によれば、ファン又は煙検出ユニットと回路（制御）基板収納部とは収納室の二重構造の側壁により隔てられているので、制御基板の電源部からの熱が煙検出ユニットやファンに伝わり難くすることができ、熱によって煙検出ユニット内の光源やファンの回転翼等がダメージを受けるのを防ぐことができ、又、ファンの振動が制御基板に伝わり難くすることができ、振動によって制御基板が誤動作するのを防ぐことができる。又、筐体の側壁を二重構造としているので、筐体の側壁に外力が加わっても衝撃がファンや煙検出ユニットに伝わり難くすることができ、衝撃によってファンや煙検出ユニットがダメージを受けるのを防ぐことができる。   According to the present invention, since the fan or smoke detection unit and the circuit (control) board storage part are separated by the double-structure side wall of the storage room, the heat from the power supply part of the control board is transferred to the smoke detection unit or fan. It is possible to prevent the light source in the smoke detection unit and the fan rotor blade from being damaged by heat, and it is also possible to prevent the vibration of the fan from being transmitted to the control board. This can prevent the control board from malfunctioning. Moreover, since the side wall of the housing has a double structure, even if an external force is applied to the side wall of the housing, the impact can hardly be transmitted to the fan or smoke detection unit, and the fan or smoke detection unit is damaged by the impact. Can be prevented.

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はこの発明の煙検知器の主要な構成を示した説明図、図２は同上の筐体の斜視図（（ａ）が上面側を示し、（ｂ）が下面側を示す。）、図３は同上の筐体の断面図である。図４は同上の図３とは別の断面の断面図である。   An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram showing the main configuration of the smoke detector of the present invention, and FIG. 2 is a perspective view of the same housing ((a) shows the upper surface side, and (b) shows the lower surface side). 3 is a cross-sectional view of the casing. FIG. 4 is a cross-sectional view different from FIG.

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、両者は近接しており、収納室４５内に上下に部分的に重なって、段違いに配置されて収納されている。   In FIG. 1, the fan 3 and the smoke detection unit 2 are illustrated as being separated from each other for the sake of explanation. However, in actuality, they are close to each other and partially overlap vertically in the storage chamber 45. They are stored in different levels.

具体的には、図４に示す様に、ファン３が台座３０の上面側に取り付けられ、略Ｌ字状の煙検出ユニット２は台座３０の下面側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て、収納室４５内に収納されている。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 FIG. 4, the fan 3 is attached to the upper surface side of the pedestal 30, and the substantially L-shaped smoke detection unit 2 is attached to the lower surface side of the pedestal 30. The upper and lower portions of the pedestal 30 are partially overlapped with each other and are arranged in two upper and lower steps and are stored in the storage chamber 45. 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２〜図４に示す様に、ファン３と煙検出ユニット２を収納する収納室４５は、その制御基板５５の収納部５６に所定の間隔をあけて並ぶ側壁５７が内側壁５７ａと外側壁５７ｂの二重構造の側壁となっている。更に、本実施の形態においては、収納室４５の二重構造の側壁５７とは反対側の筐体５０の側壁５９も内側壁５９ａと外側壁５９ｂの二重構造の側壁となっている。収納室４５は筐体５０と一体に形成されており、収納室４５の二重構造の側壁５７及び筐体５０の二重構造の側壁５９は一体の部材として形成されている。また、流入部４０および排気口６０を有する側壁も同様な構成となっている。   As shown in FIGS. 2 to 4, the storage chamber 45 that stores the fan 3 and the smoke detection unit 2 has a side wall 57 that is arranged at a predetermined interval in the storage portion 56 of the control board 55 and has an inner wall 57 a and an outer wall. 57b is a double side wall. Further, in the present embodiment, the side wall 59 of the housing 50 opposite to the double side wall 57 of the storage chamber 45 is also a double side wall of the inner side wall 59a and the outer side wall 59b. The storage chamber 45 is formed integrally with the housing 50, and the double-structure side wall 57 of the storage chamber 45 and the double-structure side wall 59 of the housing 50 are formed as an integral member. Further, the side wall having the inflow portion 40 and the exhaust port 60 has the same configuration.

尚、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で塞がれている。又、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。   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 with an openable / closable housing cover 51. Moreover, the inflow part 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、その一部が分流され、サンプリングエアＳＡとして煙検出ユニット２の図示しない流入口及び流出口を介して暗箱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の二次側は、筐体５０の外部にサンプリングエアを排気する排気口６０に接続されている。   Then, air from a sampling pipe (not shown) laid in the monitoring area is sucked by the fan 3 via the inflow portion 40, a part of which is diverted, and an inlet (not shown) of the smoke detection unit 2 as sampling air SA and The smoke passes through the smoke detector 25 in the dark box 21 through the outlet and is optically detected there, and then returned to the secondary side of the fan 3. The secondary side of the fan 3 is connected to an exhaust port 60 that exhausts sampling air to the outside of the housing 50.

この発明の煙感知器１においては、ファン３と煙検出ユニット２と制御基板収納部５６とは収納室４５の二重構造の側壁５７により隔てられているので、制御基板５５の電源部からの熱が煙検出ユニット２やファン３に伝わり難くすることができ、熱によって煙検出ユニット２内の光源やファン３の回転翼等がダメージを受けるのを防ぐことができ、又、ファン３の振動が制御基板５５に伝わり難くすることができ、振動によって制御基板５５が誤動作するのを防ぐことができる。又、筐体５０の側壁５９を二重構造としているので、筐体５０の側壁５９に外力が加わっても衝撃がファン３や煙検出ユニット２に伝わり難くすることができ、衝撃によってファン３や煙検出ユニット２がダメージを受けるのを防ぐことができる。また、四方の二重構造の外側壁のうちで側壁５７だけは筐体５０内で制御基板収納部５６と隔てるとともに、残りの二重構造の外側壁は筐体５０の周壁と兼用することにより筐体５０を小型化でき、さらに、煙検出ユニット２とファン３と制御基板５５との仕切りが一方向だけとなって互いに干渉を受け難い。さらに、筐体５０の四隅の取付穴６１を二重構造の外側壁の外側に設けることにより、設置後に壁面に歪みが発生した場合、筐体５０の外側壁は歪むが、内側壁は歪まないために、ファン３や煙検出ユニット２がダメージを受けるのを防ぐことができる。   In the smoke detector 1 of the present invention, the fan 3, the smoke detection unit 2 and the control board storage 56 are separated by the double side wall 57 of the storage chamber 45. The heat can be made difficult to be transmitted to the smoke detection unit 2 and the fan 3, the light source in the smoke detection unit 2 and the rotor blades of the fan 3 can be prevented from being damaged by the heat, and the vibration of the fan 3 can be prevented. Can be made difficult to be transmitted to the control board 55, and the control board 55 can be prevented from malfunctioning due to vibration. Further, since the side wall 59 of the housing 50 has a double structure, even if an external force is applied to the side wall 59 of the housing 50, it is possible to make it difficult for the impact to be transmitted to the fan 3 and the smoke detection unit 2. It is possible to prevent the smoke detection unit 2 from being damaged. Further, only the side wall 57 among the outer walls of the four-sided double structure is separated from the control board storage portion 56 in the casing 50, and the remaining outer wall of the double structure is also used as the peripheral wall of the casing 50. The housing 50 can be downsized, and the smoke detection unit 2, the fan 3, and the control board 55 are separated from each other in only one direction and are not easily interfered with each other. Further, by providing the mounting holes 61 at the four corners of the casing 50 outside the outer wall of the double structure, when the wall surface is distorted after installation, the outer wall of the casing 50 is distorted, but the inner wall is not distorted. Therefore, the fan 3 and the smoke detection unit 2 can be prevented from being damaged.

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、煙感知器の筐体の斜視図で、（ａ）が上面側を示し、（ｂ）が下面側を示した図である。It is the perspective view of the housing | casing of a smoke sensor which shows the same as the above, (a) shows the upper surface side, (b) is the figure which showed the lower surface side. 同上を示し、煙感知器の筐体の断面図である。It is sectional drawing of the housing | casing of a smoke detector which shows the same as the above. 同上を示し、煙感知器の筐体にカバーが装着された状態における図３とは別の断面の断面図である。FIG. 4 is a cross-sectional view different from FIG. 3 in the state in which the cover is attached to the casing of the smoke detector, showing the same.

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
４５ 収納室
４６ 収納室カバー（蓋体）
５０ 筐体
５１ 筐体カバー
５５ 制御基板
５６ 制御基板収納部
５７ 収納室の二重構造の側壁
５９ 筐体の二重構造の側壁 DESCRIPTION OF SYMBOLS 1 Smoke detector 2 Smoke detection unit 3 Fan 45 Storage chamber 46 Storage chamber cover (lid body)
50 Housing 51 Housing Cover 55 Control Board 56 Control Board Storage Unit 57 Double Side Wall of Storage Room 59 Double Side Wall of Housing

Claims (3)

略箱状の筐体内に、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備えた煙感知器において、該筐体に該ファン又は該煙検出ユニットを収納する収納室を設け、該筐体の回路基板収納部に所定の間隔をあけて並ぶ該収納室の側壁を二重構造としたことを特徴とする煙感知器。   In a smoke detector comprising a fan for sucking sampling air from a sampling pipe and a smoke detection unit into which sampling air from the sampling pipe is introduced in a substantially box-shaped casing, the fan is installed in the casing. Alternatively, the smoke detector is characterized in that a storage chamber for storing the smoke detection unit is provided, and a side wall of the storage chamber arranged at a predetermined interval in the circuit board storage portion of the housing has a double structure. 該筐体の側壁を二重構造としたことを特徴とする請求項１に記載の煙感知器。   The smoke detector according to claim 1, wherein a side wall of the housing has a double structure. 該収納室と該筐体を一体に形成したことを特徴とする請求項２に記載の煙感知器。   The smoke detector according to claim 2, wherein the storage chamber and the housing are integrally formed.
JP2008089473A 2008-03-31 2008-03-31 smoke detector Active JP4885900B2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP2008089473A JP4885900B2 (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
EP09250785.4A EP2109351B1 (en) 2008-03-31 2009-03-20 Electrical device housing
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
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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008089473A JP4885900B2 (en) 2008-03-31 2008-03-31 smoke detector

Publications (2)

Publication Number Publication Date
JP2009245063A true JP2009245063A (en) 2009-10-22
JP4885900B2 JP4885900B2 (en) 2012-02-29

Family

ID=41306890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008089473A Active JP4885900B2 (en) 2008-03-31 2008-03-31 smoke detector

Country Status (1)

Country Link
JP (1) JP4885900B2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05229338A (en) * 1992-02-24 1993-09-07 Nippondenso Co Ltd Car-mounting air cleaner
JPH08210201A (en) * 1995-02-06 1996-08-20 Kansei Corp Air cleaner box with built-in electric equipment
JPH08235464A (en) * 1995-02-28 1996-09-13 Nohmi Bosai Ltd Fire detector
JPH10256747A (en) * 1997-03-07 1998-09-25 Krohne Ag Box for field use
JP2003268246A (en) * 2002-03-18 2003-09-25 Nissan Motor Co Ltd Resin composition and its production method
JP2004078807A (en) * 2002-08-22 2004-03-11 Hochiki Corp Sampling tube type smoke detector
JP2006031486A (en) * 2004-07-16 2006-02-02 Nohmi Bosai Ltd Fire detection device
JP2006346523A (en) * 2005-06-13 2006-12-28 Saraya Kk Structure of storage vessel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05229338A (en) * 1992-02-24 1993-09-07 Nippondenso Co Ltd Car-mounting air cleaner
JPH08210201A (en) * 1995-02-06 1996-08-20 Kansei Corp Air cleaner box with built-in electric equipment
JPH08235464A (en) * 1995-02-28 1996-09-13 Nohmi Bosai Ltd Fire detector
JPH10256747A (en) * 1997-03-07 1998-09-25 Krohne Ag Box for field use
JP2003268246A (en) * 2002-03-18 2003-09-25 Nissan Motor Co Ltd Resin composition and its production method
JP2004078807A (en) * 2002-08-22 2004-03-11 Hochiki Corp Sampling tube type smoke detector
JP2006031486A (en) * 2004-07-16 2006-02-02 Nohmi Bosai Ltd Fire detection device
JP2006346523A (en) * 2005-06-13 2006-12-28 Saraya Kk Structure of storage vessel

Also Published As

Publication number Publication date
JP4885900B2 (en) 2012-02-29

Similar Documents

Publication Publication Date Title
TWI499365B (en) Electrical machines and smoke sensors
TWI442346B (en) Photoelectric smoke detector
JP5993253B2 (en) smoke detector
JP4885900B2 (en) smoke detector
JP4995608B2 (en) smoke detector
JP6753424B2 (en) Particle sensors and electronics
JP6568725B2 (en) Fire detector
TWI480837B (en) Fire detector
JP2008225539A (en) Smoke sensor
CN100553735C (en) Electronic installation
JP4828562B2 (en) smoke detector
JP5519168B2 (en) Fire detector
JP2007201174A (en) Cooling device for electronic equipment and method for detecting clogging of filter
US11749082B2 (en) Fire or smoke detector
JP2018088201A (en) Fire sensor
JP2019053378A (en) Smoke detection device
JP2007047029A (en) Dust sensor and air cleaner
DK179567B1 (en) Wet/dry vacuum cleaner comprising a dust detection module
JP6095757B2 (en) Water drainage structure for electrical equipment
JP2019179330A (en) Sensor and cleaning method for sensor
JP2003248877A (en) Smoke sensor
JP2017533409A (en) Sealing system for optical sensors in gas turbine engines
JP6203108B2 (en) Ventilation fan
JP5490366B2 (en) smoke detector
JP5236547B2 (en) Fire detector

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100329

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100818

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100831

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101101

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110412

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110610

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20111206

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20111208

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20141216

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4885900

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150