JP4013184B2 - Sprinkler fire extinguishing equipment - Google Patents

Sprinkler fire extinguishing equipment Download PDF

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Publication number
JP4013184B2
JP4013184B2 JP18580699A JP18580699A JP4013184B2 JP 4013184 B2 JP4013184 B2 JP 4013184B2 JP 18580699 A JP18580699 A JP 18580699A JP 18580699 A JP18580699 A JP 18580699A JP 4013184 B2 JP4013184 B2 JP 4013184B2
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Japan
Prior art keywords
ventilation
fire
ceiling
air
sprinkler
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JP18580699A
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Japanese (ja)
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JP2001009057A (en
Inventor
三南 青木
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Nohmi Bosai Ltd
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Nohmi Bosai Ltd
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Description

【0001】
【発明の属する技術分野】
この発明は、スプリンクラ消火設備に関するものであり、更に述べると、火災時に、火炎や熱気流が換気用の開口部を通って天井裏に流入しないようにしたスプリンクラ消火設備である。
【0002】
【従来の技術】
近年、高層ビルなどでは、システム天井が用いられている。このシステム天井は所定間隔で設置した軽量天井材を吊り金具により天井スラブに吊り下げ、これら軽量天井材の間に天井面材を係止させて天井張りを行い、天井を構築するものである。
【0003】
このシステム天井において、軽量天井材はTバー、即ち、断面T字状のバー、からなり、かつ、場所によってはTバー間の間隔を狭めて照明器具を設置できる様に、一対のTバーを併設して構成されている。この一対のTバーはTバーのフランジの一方で天井面材や照明器具を支持すると共に、フランジの他方が突き合わせ状態で配置され、これらつき合わせたフランジの端部間には、通常25mm程度の換気用の開口部、即ち、スリットが形成され、このスリットから室内の空気が吸い込まれ、排気するようになっている。
【0004】
従来のスプリング消火設備は、このシステム天井に設けられ、天井面材の上方に設置され、一端が給水本管に接続された金属製の巻き出し管と、該巻き出し管の他端に取り付けられ、前記天井面材に形成した取付穴から突出して設けられるスプリンクラヘッドと、前記天井面材の上面側に設けられる換気手段と、前記天井面材とほぼ同一平面に設けられ、前記換気手段によって室内の空気の出し入れがなされる換気用の開口部としてのスリットと、を備えている。
【0005】
【発明が解決しようとする課題】
近年、巻き出し管に樹脂製の配管(以下樹脂管という)を使用することが考えられている。この場合、樹脂管がスリットの上を通って配設され、スリット近傍で火災が発生すると、このスリットから火災あるいは高温の熱気流が吸引され、該樹脂管が直接火災にさらされ、あるいは、熱気流により加熱される。そうすると、該樹脂管は破裂或いは燃焼して消火用水が漏れるばかりでなく、スプリンクラヘッドに消火用水を供給できなくなるものと考えられる。
又、前記火災あるいは熱気流が天井裏に流入すると、天井裏の消火設備機器等が加熱されて破損したり、燃焼したりすることがある。
【0006】
本発明は、上記事情に鑑み、天井裏の樹脂管その他の消火設備機器等の破損を防止することを目的とする。
【0007】
【課題を解決するための手段】
この発明は、天井板に設けられた換気用の開口部と、該天井板の上面側に設置され、一端が給水本管に接続された樹脂管と、該樹脂管の他端に取り付けられ、前記天井板に形成された取付穴から突出して設けられているスプリンクラヘッドと、前記天井板の下面側に設けられる火災感知器と、前記天井板の上面側に設けられ、天井裏側へ吹き出し又は該天井裏から吸い込むことで、前記換気用の開口部を介して室内に連通する換気手段と、を備え、該換気手段が、通常、室内の空気を吸い込み外部に排出する換気通常動作を行うスプリンクラ消火設備であって; 前記火災感知器が火災を感知した時に、前記換気手段を室内に空気を吹き出す換気非常時動作に切り替え、かつ、前記スプリンクラヘッドが開き、消火用水が放出されると、前記換気手段を前記換気通常動作に切り替える制御手段を設け、前記換気手段は、火災時、前記スプリンクラヘッドが動作するまでは、前記天井裏側を加圧することを特徴とする。
【0008】
この発明は、前記給水本管の基端側に流水検知装置を設け、前記制御手段は前記火災感知器が火災を感知した時に、前記換気手段のファンを逆回転させ、前記流水検知装置が動作した時に、該ファンを正回転させることを特徴とする。
【0009】
【発明の実施の形態】
本発明者は、本発明の目的を達成するには、火災時に室内の空気が換気用の開口部を通って室外に流出しない様にすれば良いことに気がついた。
そこで、天井裏にシール手段、例えば、エアシール手段を設け、火災時に該エアシール手段を用いて前記開口部を換気閉鎖することにした。
このエアシール手段として、既存のスプリンクラ消火設備の換気手段を用いる場合には、換気手段の換気通常時動作と換気非常時動作とを切り換える制御手段を設ける。
【0010】
又、シール手段として、この換気手段を利用せずに、新たにエアシール用の送気手段を設けても良い。この送気手段を運転する時には、換気手段の運転を停止させる。
【0011】
この換気通常時動作は、火災感知器が作動する迄行い、その後は換気非常時動作に切り替える。この制御手段を火災感知器に連動させ、火災感知器が火災を検出した時に換気非常時動作に切り替えてもよい。
スプリンクラヘッドの給水配管に流水検知装置を設け、該流水検知装置を前記制御手段に連結し、流水検知装置が流水検知をした時に換気通常時動作に切り替える様にしてもよい。
【0012】
【実施例】
本発明の実施例を図1〜図5により説明する。天井スラブ1の下方には、天井面材2が張設されている。この天井面材2はTバーの様な軽量天井材5により保持されている。天井面材2には、スプリンクラヘッド23の取付穴2aとスリット6とが設けられている。このスリット6は、換気用の開口部で、併設された一対の軽量天井材5a、5bの間に形成されている。
【0013】
この天井面材2の上面側には吊り金具により固定された給水配管11が設けられ、この給水配管11には、流水検知装置40と、接続口13を有するT字状の分岐管12とが配設されている。前記流水検知装置40は、制御盤45に接続されている。該接続口13は接続管17を介してヘッダ14の接続口15に接続されている。このヘッダ14には複数の排出口16a〜16cが設けられている。
【0014】
エルボ21の両端部には接続口22a、22bが設けられ、このエルボ21は固定金具8によりチャンネル7に固定されている。
【0015】
このエルボ21の接続口22aには、樹脂管31の一端の継手部32が接続され、その他端の継手部32はヘッダ14の排出口16aが接続されている。なお、この樹脂管31は、例えば、蛇腹状又はスパイラル状のさや管内に収容して二重構造にしてもよい。
【0016】
樹脂管31はスリット6を横切って配設されており、該スリット6に対応する部分にはTバー5a、5bが設けられている。
【0017】
天井面材2の上面側には、換気手段55が配設されている。
この換気手段55は、並列に配設された複数の端末ダクト56と、該端末ダクト56に常時開のダンパ57を介して連結されたファン58と、該ファン58の出口58aに接続された常時開のダンパ60と、該ファン58の出口58aと前記ダンパ57の入口57aとを結ぶバイパス回路62と、前記ファン58と前記ダンパ57との間に接続された外気導入パイプ64と、を備えている。このバイパス回路62及び外気導入パイプ64には、常時閉のダンパ65、66が設けられている。なお、各ダンパ57、60、64、66のモータM及びファン58は制御盤45に接続されている。
【0018】
天井面材2の下面には、火災感知器50が設けられている。この火災感知器50は制御盤45に連結されている。
【0019】
次に、本実施例の作動について説明する。
通常、制御盤45は、換気手段55を換気通常時動作にし、室内70の空気70Aを吸い込み外部に排出する(S1)。
この時、ダンパ57、60は開、ダンパ65、66は閉であり、ファン58の正回転により端末ダクト56から空気70Aが吸い込まれ、該ダンパ57、60を通って屋外に排気されるので、天井裏80は減圧されマイナスの静圧となる。
そのため、室内70の空気70Aは開口部6を通って天井裏80に流れ、端末ダクト56に吸い込まれる。
【0020】
火災感知器50は常時火災を監視している(S2)。該感知器50は火災を検出すると、火災信号を制御盤45に送出する。
制御盤45は換気手段55を換気非常時動作に切り替え、ファン58を逆回転させ(S3)、外気70Bを端末ダクトに吸引し、室内70に外気70Bを吹き出す(S4)。
【0021】
この時、ダンパ57、60は開、ダンパ65、66は閉であり、ファン58の逆回転により、端末ダクト56から室外の空気70Bが吹き出されるので、天井裏80が加圧されプラスの静圧となる。
そのため、天井裏80の空気70Bは開口部6を通って室内70に流入するので、室内70の火災や熱気流が開口部6から天井裏側に流出することはない。即ち、開口部6は火災や熱気流が流出しない様にエアシールされた状態となる。
【0022】
スプリンクラヘッド23が開き、消火用水が放出されると、給水配管11内を消火用水が流れるので、流水検知装置40が作動し、流水検知信号を制御盤45に送出する(S5)。
【0023】
制御盤45は、換気通常時動作に切り替え、ファン58を正回転させる(S6)。即ち、前記開口部6は、火災感知器50が火災を検知した時から流水検知装置40が流水を検出する迄の間だけエアシールされることになる。
【0024】
なお、前記換気非常時動作の場合、ファン58を逆回転させて室内70に送気したが、ファン58を正回転させ、ダンパ57、60を閉じ、ダンパ65、66を開にし、バイパス回路62を介して室内70に送気してもよい。
【0025】
この発明の実施例は、上記に限定されるものではなく、例えば、換気手段と別にシール手段、例えば、エアシール手段を設けても良い。
このエアシール手段としてエアシール用の送気手段を設ける。この送気手段を用いる場合には、換気手段の運転を停止させ、前記開口部を換気閉鎖する様に、天井板に沿って送気し、エアシールを形成する。この送気手段は、前記換気手段の制御手段に連結され、該制御手段により制御される。
【0026】
【発明の効果】
この発明は、以上の様に構成したので、次の様な効果を奏する。
(1)換気用の開口部を換気閉鎖するためのシール手段を設けたので、火災時、該シール手段により該開口部を換気閉鎖することができる。そのため、室内の火災や熱気流が天井裏に流出するのを防止することができるので、樹脂管等の消火設備機器の破損や燃焼を防止できる。
【0027】
(2)換気手段の換気通常時動作と換気非常時動作とを切り換える制御手段を設けたので、火災時、換気手段の換気非常時動作に切り替え、開口部を介して外部の空気を室内に吹き込むことができる。そのため、室内の火災や熱気流が天井裏に流出するのを防止できるので、樹脂管等の消火設備機器の破損や燃焼を防止することができる。
【0028】
(3)火災感知器と換気手段を制御する制御手段を設けたので、火災感知器が火災を検知すると、自動的に換気手段は室内に空気を吹き込む様に制御される。
【0029】
(4)流水検知装置と換気手段を制御する制御手段を設けたので、スプリンクラヘッドが動作し、流水検知装置が流水を検知すると、自動的に換気手段は排気駆動に切り替え、排気を行う。
そのため、火災で発生した室内の煙を円滑に排出することができる。なお、スプリンクラヘッドが動作すれば、火災を静められるので、樹脂管の防護に支障をきたすことはない。
【図面の簡単な説明】
【図1】本発明の実施例を示す縦断面図である。
【図2】換気手段を示す図である。
【図3】換気通常時動作状態を示す図である。
【図4】換気非常時動作状態を示す図である。
【図5】換気手段のフローチャートである。
【符号の説明】
6 換気用の開口部
23 スプリンクラヘッド
31 樹脂管
40 流水検知装置
45 制御盤
55 換気手段
70 室内
80 天井裏
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sprinkler fire extinguishing equipment. More specifically, the present invention relates to a sprinkler fire extinguishing equipment that prevents a flame or a hot air stream from flowing into the ceiling through an opening for ventilation in the event of a fire.
[0002]
[Prior art]
In recent years, system ceilings are used in high-rise buildings and the like. In this system ceiling, a lightweight ceiling material installed at a predetermined interval is suspended from a ceiling slab by suspension fittings, and the ceiling surface material is locked between these lightweight ceiling materials to construct the ceiling.
[0003]
In this system ceiling, the lightweight ceiling material consists of T-bars, that is, bars with a T-shaped cross section, and a pair of T-bars is installed so that the lighting fixtures can be installed with the space between the T-bars being narrowed in some places. It is constructed side by side. This pair of T-bars supports one of the flanges of the T-bar and supports the ceiling surface material and the lighting fixture, and the other flange is disposed in a butted state. An opening for ventilation, that is, a slit is formed, and indoor air is sucked and exhausted from the slit.
[0004]
Conventional spring fire extinguishing equipment is installed on the ceiling of this system, installed above the ceiling surface material, and attached to the other end of the unwinding pipe with a metal unwinding pipe with one end connected to the water supply main A sprinkler head provided protruding from an attachment hole formed in the ceiling surface material, ventilation means provided on the upper surface side of the ceiling surface material, and provided substantially in the same plane as the ceiling surface material, And a slit as a ventilation opening through which air is taken in and out.
[0005]
[Problems to be solved by the invention]
In recent years, it has been considered to use a resin pipe (hereinafter referred to as a resin pipe) for the unwinding pipe. In this case, when a resin pipe is disposed over the slit and a fire occurs near the slit, a fire or a high-temperature hot air current is sucked from the slit, and the resin pipe is directly exposed to the fire, or hot air Heated by the flow. Then, it is considered that the resin pipe not only bursts or burns and leaks fire-extinguishing water but also cannot supply fire-extinguishing water to the sprinkler head.
In addition, when the fire or hot airflow flows into the back of the ceiling, the fire extinguishing equipment on the back of the ceiling may be heated and damaged or burned.
[0006]
In view of the above circumstances, an object of the present invention is to prevent damage to resin pipes and other fire extinguishing equipment on the back of the ceiling.
[0007]
[Means for Solving the Problems]
This invention is provided with an opening for ventilation provided on the ceiling board, a resin pipe installed on the upper surface side of the ceiling board, one end connected to the water supply main, and the other end of the resin pipe, a sprinkler head that protrudes from the mounting hole formed in the ceiling panel, said a fire detector provided on the lower surface of the ceiling plate, provided on the upper surface side of the ceiling plate, balloon or the ceiling backside Ventilation means communicating with the room through the ventilation opening by sucking from the ceiling , and the ventilation means normally sucks indoor air and discharges it outside. When the fire detector detects a fire, the ventilation means is switched to a ventilation emergency operation that blows air into the room, and the sprinkler head is opened and fire-extinguishing water is discharged. Provided a control means for switching the air means to said ventilation normal operation, the ventilation means is a fire, until the sprinkler head to work, characterized in that pressurizing the ceiling back.
[0008]
In the present invention, a water flow detection device is provided on the base end side of the water supply main, and when the fire detector detects a fire, the control means reversely rotates the fan of the ventilation means, and the water flow detection device operates. when the features a Rukoto rotated forward the fan.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In order to achieve the object of the present invention, the present inventor has realized that it is only necessary to prevent indoor air from flowing out of the room through the opening for ventilation in the event of a fire.
Therefore, a sealing means such as an air sealing means is provided on the back of the ceiling, and the opening is ventilated and closed using the air sealing means in the event of a fire.
When the ventilation means of the existing sprinkler fire extinguishing equipment is used as the air seal means, a control means for switching between the ventilation normal operation and the ventilation emergency operation of the ventilation means is provided.
[0010]
As a sealing means, an air supply means for air sealing may be newly provided without using this ventilation means. When operating this air supply means, the operation of the ventilation means is stopped.
[0011]
This normal ventilation operation is performed until the fire detector is activated, and thereafter the operation is switched to the emergency ventilation operation. This control means may be linked to the fire detector, and when the fire detector detects a fire, it may be switched to an emergency operation for ventilation.
A running water detection device may be provided in the water supply pipe of the sprinkler head, and the running water detection device may be connected to the control means so that the operation is switched to the normal ventilation operation when the running water detection device detects the running water.
[0012]
【Example】
An embodiment of the present invention will be described with reference to FIGS. A ceiling surface material 2 is stretched under the ceiling slab 1. This ceiling surface material 2 is held by a lightweight ceiling material 5 such as a T-bar. The ceiling surface material 2 is provided with a mounting hole 2 a and a slit 6 for the sprinkler head 23. The slit 6 is an opening for ventilation, and is formed between a pair of lightweight ceiling materials 5a and 5b provided side by side.
[0013]
A water supply pipe 11 fixed by a hanging metal fitting is provided on the upper surface side of the ceiling surface material 2. The water supply pipe 11 includes a flowing water detection device 40 and a T-shaped branch pipe 12 having a connection port 13. It is arranged. The flowing water detection device 40 is connected to a control panel 45. The connection port 13 is connected to the connection port 15 of the header 14 via a connection pipe 17. The header 14 is provided with a plurality of discharge ports 16a to 16c.
[0014]
Connection ports 22 a and 22 b are provided at both ends of the elbow 21, and the elbow 21 is fixed to the channel 7 by a fixing metal 8.
[0015]
A joint portion 32 at one end of the resin pipe 31 is connected to the connection port 22 a of the elbow 21, and the discharge port 16 a of the header 14 is connected to the joint portion 32 at the other end. The resin tube 31 may be housed in a bellows-like or spiral sheath, for example, to have a double structure.
[0016]
The resin tube 31 is disposed across the slit 6, and T bars 5 a and 5 b are provided at portions corresponding to the slit 6.
[0017]
A ventilation means 55 is disposed on the upper surface side of the ceiling member 2.
The ventilation means 55 includes a plurality of terminal ducts 56 arranged in parallel, a fan 58 coupled to the terminal duct 56 via a normally open damper 57, and a constant connection connected to an outlet 58a of the fan 58. An open damper 60, a bypass circuit 62 connecting the outlet 58 a of the fan 58 and the inlet 57 a of the damper 57, and an outside air introduction pipe 64 connected between the fan 58 and the damper 57. Yes. The bypass circuit 62 and the outside air introduction pipe 64 are provided with normally closed dampers 65 and 66. The motor M and the fan 58 of each damper 57, 60, 64, 66 are connected to the control panel 45.
[0018]
A fire detector 50 is provided on the lower surface of the ceiling member 2. The fire detector 50 is connected to the control panel 45.
[0019]
Next, the operation of this embodiment will be described.
Normally, the control panel 45 sets the ventilation means 55 to the normal ventilation operation, sucks the air 70A in the room 70, and discharges it outside (S 1 ).
At this time, the dampers 57 and 60 are open, the dampers 65 and 66 are closed, and air 70A is sucked from the terminal duct 56 by the forward rotation of the fan 58, and is exhausted to the outside through the dampers 57 and 60. The ceiling 80 is depressurized to a negative static pressure.
Therefore, the air 70 </ b> A in the room 70 flows through the opening 6 to the ceiling 80 and is sucked into the terminal duct 56.
[0020]
The fire detector 50 always monitors a fire (S 2 ). When the sensor 50 detects a fire, it sends a fire signal to the control panel 45.
The control panel 45 switches the ventilation means 55 to a ventilation emergency operation, reversely rotates the fan 58 (S 3 ), sucks the outside air 70 B into the terminal duct, and blows out the outside air 70 B into the room 70 (S 4 ).
[0021]
At this time, the dampers 57 and 60 are open, the dampers 65 and 66 are closed, and the outdoor air 70B is blown out from the terminal duct 56 by the reverse rotation of the fan 58. Pressure.
Therefore, the air 70 </ b> B in the ceiling back 80 flows into the room 70 through the opening 6, so that a fire or thermal air current in the room 70 does not flow out from the opening 6 to the ceiling back side. That is, the opening 6 is in an air-sealed state so that a fire and a hot air current do not flow out.
[0022]
Open sprinkler head 23, the extinguishing water is released, because the inside of the water supply pipe 11 flows extinguishing water, water flow detection device 40 is actuated, and sends a water flow detection signal to the control panel 45 (S 5).
[0023]
The control panel 45 switches to the normal ventilation operation and rotates the fan 58 forward (S 6 ). That is, the opening 6 is air-sealed only from when the fire detector 50 detects a fire until the water flow detection device 40 detects the water flow.
[0024]
In the case of the ventilation emergency operation, the fan 58 is rotated in the reverse direction to supply air into the room 70. However, the fan 58 is rotated forward, the dampers 57 and 60 are closed, the dampers 65 and 66 are opened, and the bypass circuit 62 is opened. The air may be supplied to the room 70 via
[0025]
The embodiment of the present invention is not limited to the above. For example, a sealing means such as an air sealing means may be provided separately from the ventilation means.
As this air seal means, an air supply means for air seal is provided. When this air supply means is used, the operation of the ventilation means is stopped, and air is supplied along the ceiling plate so that the opening is closed by ventilation to form an air seal. This air supply means is connected to the control means of the ventilation means and is controlled by the control means.
[0026]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
(1) Since the sealing means for ventilating and closing the opening for ventilation is provided, the opening can be ventilated and closed by the sealing means in the event of a fire. Therefore, it is possible to prevent indoor fire and hot airflow from flowing out to the back of the ceiling, and thus it is possible to prevent damage and combustion of fire extinguishing equipment such as resin pipes.
[0027]
(2) Ventilation means ventilation control means to switch between normal operation and ventilation emergency operation, switch to ventilation emergency operation of the ventilation means in case of fire, and blow external air into the room through the opening be able to. Therefore, it is possible to prevent indoor fire and hot airflow from flowing out to the back of the ceiling, and thus it is possible to prevent damage and combustion of fire extinguishing equipment such as resin pipes.
[0028]
(3) Since the control means for controlling the fire detector and the ventilation means is provided, when the fire detector detects a fire, the ventilation means is automatically controlled to blow air into the room.
[0029]
(4) Since the control means for controlling the flowing water detection device and the ventilation means is provided, when the sprinkler head operates and the flowing water detection apparatus detects flowing water, the ventilation means automatically switches to the exhaust drive and exhausts.
Therefore, the indoor smoke generated by the fire can be discharged smoothly. Note that if the sprinkler head operates, the fire can be silenced, so there is no problem in protecting the resin pipe.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.
FIG. 2 is a diagram showing ventilation means.
FIG. 3 is a diagram showing an operation state during normal ventilation.
FIG. 4 is a diagram showing an operation state in a ventilation emergency.
FIG. 5 is a flowchart of ventilation means.
[Explanation of symbols]
6 Ventilation opening 23 Sprinkler head 31 Resin pipe 40 Flowing water detection device 45 Control panel 55 Ventilation means 70 Indoor 80 Back of ceiling

Claims (2)

天井板に設けられた換気用の開口部と、該天井板の上面側に設置され、一端が給水本管に接続された樹脂管と、該樹脂管の他端に取り付けられ、前記天井板に形成された取付穴から突出して設けられているスプリンクラヘッドと、前記天井板の下面側に設けられる火災感知器と、前記天井板の上面側に設けられ、天井裏側へ吹き出し又は該天井裏から吸い込むことで、前記換気用の開口部を介して室内に連通する換気手段と、を備え、該換気手段が、通常、室内の空気を吸い込み外部に排出する換気通常動作を行うスプリンクラ消火設備であって;
前記火災感知器が火災を感知した時に、前記換気手段を室内に空気を吹き出す換気非常時動作に切り替え、かつ、前記スプリンクラヘッドが開き、消火用水が放出されると、前記換気手段を前記換気通常動作に切り替える制御手段を設け、
前記換気手段は、火災時、前記スプリンクラヘッドが動作するまでは、前記天井裏側を加圧することを特徴とするスプリンクラ消火設備。
A ventilation opening provided in the ceiling plate, a resin pipe installed on the upper surface side of the ceiling plate, one end connected to the water supply main, and the other end of the resin tube are attached to the ceiling plate. A sprinkler head that protrudes from the formed mounting hole, a fire detector that is provided on the lower surface side of the ceiling plate, and a blower that is provided on the upper surface side of the ceiling plate and that blows out or sucks from the ceiling. And a ventilation means communicating with the room through the opening for ventilation , wherein the ventilation means is a sprinkler fire extinguishing equipment that normally performs a ventilation normal operation of sucking indoor air and discharging it to the outside. ;
When the fire detector detects a fire, the ventilation means is switched to a ventilation emergency operation for blowing out air into the room, and when the sprinkler head is opened and fire-extinguishing water is discharged, the ventilation means is set to the normal ventilation. Provide control means to switch to operation,
It said ventilation means is a fire, until the sprinkler head to work, sprinkler fire extinguishing equipment, characterized in that pressurizing the ceiling back.
前記給水本管の基端側に流水検知装置を設け、前記制御手段は前記火災感知器が火災を感知した時に、前記換気手段の該ファンを逆回転させ、前記流水検知装置が動作した時に、該ファンを正回転させることを特徴とする請求項1記載のスプリンクラ消火設備。A water flow detection device is provided on the proximal end side of the water supply main, and when the fire detector detects a fire, the control unit reversely rotates the fan of the ventilation unit, and the water flow detection device operates. 2. The sprinkler fire extinguishing equipment according to claim 1, wherein the fan is rotated forward.
JP18580699A 1999-06-30 1999-06-30 Sprinkler fire extinguishing equipment Expired - Fee Related JP4013184B2 (en)

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