JP4230071B2 - Pressurized smoke exhaust system - Google Patents

Pressurized smoke exhaust system Download PDF

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Publication number
JP4230071B2
JP4230071B2 JP30911899A JP30911899A JP4230071B2 JP 4230071 B2 JP4230071 B2 JP 4230071B2 JP 30911899 A JP30911899 A JP 30911899A JP 30911899 A JP30911899 A JP 30911899A JP 4230071 B2 JP4230071 B2 JP 4230071B2
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Japan
Prior art keywords
door
room
pressurized
differential pressure
smoke exhaust
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JP30911899A
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JP2001120674A (en
Inventor
均 栗岡
博臣 佐藤
雅哉 平岡
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Kajima Corp
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Kajima Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、特別避難階段室と、居室との間に介在する附室又はエレベータホールに、火災時に加圧給気ファンから外気を給気して排煙する加圧排煙システム及びそれに用いる差圧センサ付扉に関するものである。
【0002】
【従来の技術】
ビル火災等では、発生した煙が居室等の上部に煙層を形成し、この煙層が次第に下方へと立ち込め、居室の開口部の上端より低い位置に達すると、この開口部から、特別避難階段室と居室との間に介在する附室又はエレベータホールに流出し始める。このため、附室又はエレベータホールは、排煙設備を有したものとすることが義務付けられている。この種の排煙設備としては、附室の圧力を火災が発生した居室の圧力より高く加圧し、隣接居室内の火災で発生した煙が附室へ流入するのを阻止する加圧排煙システムがある。
【0003】
この加圧排煙システムは、火災時に加圧給気ファンから附室又はエレベータホールに給気される給気量をコントロールし、附室又はエレベータホールとこれに隣接する居室との間の附室扉にかかる圧力調整と排煙を行っている。従来、この給気量のコントロールは、例えば、加圧給気ファンからの給気ダクト途中の数点におけるダクト内圧と外気圧との差圧を計測し、これによって対象とする附室扉の前後の差圧を推定することにより行われていた。
【0004】
【発明が解決しようとする課題】
しかしながら、上述した従来の加圧排煙システムは、対象とする附室扉の前後差圧を、給気ダクト途中のダクト内圧と外気圧との差圧により推定してコントロールするため、附室扉の前後差圧が目標値になっている保証がないままコントロールされる場合があった。即ち、現実の火災の状況に応じた附室扉の差圧が把握できなかったため、十分な差圧が現実には確保されていない場合があり、この場合には附室に煙が流出拡散する虞れがあった。一方、過剰な差圧が附室扉に作用している場合には、扉の開閉に支障をきたす虞れもあった。
本発明は上記状況に鑑みてなされたもので、附室扉に作用する実際の差圧を把握することで、附室扉に作用する差圧を所定の差圧に制御可能な加圧排煙システム及びそれに用いる差圧センサ付扉を提供し、附室扉の開閉障害、及び煙の流出拡散の防止を図ることを目的とする。
【0005】
【課題を解決するための手段】
本発明に係る加圧排煙システムは、居室と階段室との間に介在する附室又はエレベータホールに、加圧給気ファンにより圧縮空気を流入させることにより、前記居室から前記附室又はエレベータホールへの煙の流入を防止する加圧排煙システムにおいて、前記附室又はエレベータホールとこれに隣接する前記居室との間に設けられた附室扉が、前記圧縮空気の流入により加圧されて扉枠の戸当たり部に押し付けられるときの押圧力を検出するセンサと、前記センサによって検出された前記押圧力に基づいて、前記附室扉に作用する差圧を演算し、当該差圧が所定の値となるように前記加圧給気ファンの回転駆動を制御する演算・制御手段とを備えるものである。
【0006】
この加圧排煙システムでは、煙感・熱感信号の受信により加圧給気ファンが駆動されると、附室又はエレベータホールに圧縮空気が流入し、附室又はエレベータホールが隣接する居室より高圧に加圧される。すると、附室扉が扉枠の戸当たり側へ押し付けられ、その押圧力が、歪センサによって検出される。検出された押圧力は、演算・制御手段によって、附室扉を挟む両側の差圧として演算される。演算・制御手段は、この差圧が所定の値となるように、加圧給気ファンの回転駆動を制御する。これにより、附室扉を挟む居室と附室との差圧が適切に保たれ、扉の開閉障害、煙の流出拡散が防止される。
【0009】
【発明の実施の形態】
以下、本発明に係る加圧排煙システムの好適な実施の形態を図面を参照して詳細に説明する。
図1は本発明に係る加圧排煙システムの構成図、図2は図1のA−A矢視図、図3は図2のB−B断面図、図4は本発明に係る加圧排煙システムのブロック図である。
【0010】
特別避難階段室1と居室3との間には附室又はエレベータホール(以下、単に「附室5」という)が設けられ、附室5は壁部である耐火壁7によって特別避難階段室1と居室3とから区画形成されている。耐火壁7には扉枠9が設けられ、扉枠9はヒンジ11を介して開閉自在となった附室扉13を支持している。附室扉13は、少なくとも居室3と附室5との間の耐火壁7に設けられる他、附室5と特別避難階段室1との間の耐火壁7に設けられてもよい。但し、いずれの場合にも、附室扉13は、附室側へ開放自在となっている。この開放方向は、後述する附室扉13を用いて差圧を検出するために重要となる。
【0011】
附室5には給気口15が開口され、給気口15は給気ダクト17を介して加圧給気ファン19に接続されている。加圧給気ファン19は、駆動されることで、外気を加圧空気として給気口15から附室5に給気する。この加圧給気ファン19は、後述の演算・制御手段によって駆動制御される。
【0012】
また、附室5には排煙口21が開口され、排煙口21は排煙ダクト23を介して不図示の排煙ファンに接続されている。排煙ファンは、例えば上述の演算・制御手段によって制御するものであってもい。排煙ファンは、駆動されることで、附室5内の煙を排煙口21から吸引して外部へ排出する。なお、この排煙ファンの送気量は、加圧給気ファン19の送気量より十分に小さく設定されている。
【0013】
従って、加圧給気ファン19により圧縮空気を流入させると、附室5は居室3より高圧に加圧され、居室3から附室5への煙の流入が防止されるようになっている。なお、このような構成により煙の流入が防止される附室5において、排煙口21が設けられているのは、通常状態(例えば附室扉13が開放されていた場合等)以外の状態で附室5に進入した煙を排気するためである。
【0014】
図2に示す附室扉13のドアノブ25側に対応する扉枠9には図3に示す差圧センサである歪センサ27が設けられている。歪センサ27は、扉枠9の戸当たり部29に埋設され、閉動される附室扉13に当接してこの附室扉13に加わる扉閉方向の外力を歪み量として検出するようになっている。歪センサ27は、側面視が凸形状で形成され、突出先端部27aが戸当たり部29から突出する。突出先端部27aの周囲には耐火被覆材31が設けられ、耐火被覆材31はセンサ本体27bを火災による熱から保護している。これら扉枠9、附室扉13、歪センサ27、耐火被覆材31は、差圧センサ付扉33を構成している。
【0015】
歪センサ27は、加えられる圧力によって誘電分極を生じて、圧力に比例した電荷が現れる所謂圧電効果を利用したものである。具体的には、チタン酸バリウム、及びその同類であるPZT(チタンジルコン酸鉛)等の一群の磁器物質が機械的に丈夫なため好適に用いることができ、また、高感度を必要とする場合にはロシェル塩等を用いることができる。
【0016】
この歪センサ27は、図4に示す演算・制御手段35に電気的に接続されている。演算・制御手段35としては、例えばコンピューターが使用される。建物が複数階である場合には、演算・制御手段35には各階毎の差圧センサ付扉33の歪センサ(No.1〜No.n)27が接続される。演算・制御手段35にはインバーター37を介して加圧給気ファン19が接続される。加圧給気ファン19は、演算・制御手段35から送出される制御信号によってインバーター37を介して周波数が制御され、その結果、回転数が可変制御されて給気量が制御されるようになっている。
【0017】
演算・制御手段35には、煙感・熱感センサ39が電気的に接続されている。煙感・熱感センサ39は、各居室3で発生した火災を煙又は熱により検出し、その信号を演算・制御手段35へ送るようになっている。また、演算・制御手段35には、記憶手段41が電気的に接続されている。記憶手段41は、附室扉13の面積、高さ、ヒンジ加減、歪み−圧力差換算値等のデータを格納している。この記憶手段41は、例えば演算・制御手段35にコンピューターが使用された場合、そのコンピューターの内部メモリを用いることができる。
【0018】
ここで、附室扉13の開放に要する力について説明する。
附室扉13には、附室5と居室3との差圧によって所定の開放力が必要になる。附室扉13にかかる力を示せば、静止物体にかかるモーメントの合計は、0(ゼロ)であるから、附室扉13について、ヒンジ廻りのモーメント合計は、
M+A・ΔP(W/2)−F(W−d)=0…(式1)
である。
但し、ここで、
F;扉開放に要するトータルの力〔N〕
M;ドアクローザー及び他の摩擦力のモーメント〔Nm〕
W;扉の幅〔m〕
A;扉の面積〔m2
ΔP;附室扉13を挟む差圧〔Pa〕
d;ドアノブと附室扉13の端までの距離〔m〕
とする。
【0019】
ドアクローザー及び摩擦力によるモーメントは、ドアクローザーによるヒンジ廻りのモーメントやヒンジの摩擦力、附室扉13と扉枠9との摩擦力によるモーメント等から成り立っている。ドアクローザー及び他の摩擦力に打ち勝つノブの位置での分力Frは、
Fr=M/(W−d)
である。
これを(式1)に代入すると、
F=Fr+W・A・ΔP/2(W−d)…(式2)
となる。
【0020】
従って、扉開放に要するトータルの力(F)と、附室扉13を挟む差圧(P)とは比例関係にあり、力(F)又は差圧(P)のいずれか一方の値を特定することにより、他方の値を特定することができる。
【0021】
次に、このように構成される加圧排煙システム43の作用を説明する。
図5は本発明に係る加圧排煙システムの動作を説明するフローチャートである。
居室3に設けられた煙感・熱感センサ39が火災を検知すると、その信号が演算・制御手段35に受信され、演算・制御手段35は加圧給気ファン19を始動する。加圧給気ファン19が駆動されると、附室5に圧縮空気が流入し、附室5が隣接する居室3より高圧に加圧される。すると、附室扉13が扉枠9の戸当たり部29側へ押し付けられ、その押圧力が、差圧センサ付扉33の歪センサ27によって検出される。検出された押圧力は、演算・制御手段35によって、附室扉13を挟む両側の差圧ΔPとして演算される。演算・制御手段35は、この差圧ΔPが所定の値となるように、インバーター37を介して加圧給気ファン19の回転駆動を制御する。これにより、附室扉13を挟む居室3と附室5との差圧ΔPが適切に保たれ、扉開放に要するトータルの力Fが所定の値となって、附室扉13の開閉障害、煙の流出拡散が防止される。
【0022】
このように、上述の加圧排煙システム43によれば、歪センサ27からの信号により附室扉13の差圧が把握可能になり、この差圧に対応して加圧給気ファン19を制御するので、附室扉13の開閉障害を防止でき、且つ煙の流出拡散を防止することができる。
また、差圧センサ付扉33によれば、附室扉13を挟む両空間の差圧を、簡素な構造で、容易且つ確実に把握することができる。
【0023】
なお、上述の実施の形態では、歪センサ27が扉枠9の戸当たり部29に設けられる場合を例に説明したが、本発明に係る加圧排煙システム又はそれに用いる差圧センサ付扉は、歪センサ27を附室扉13に設けるものであっても、上述同様の作用・効果を奏するものである。
【0024】
【発明の効果】
以上詳細に説明したように、本発明に係る加圧排煙システムは、附室又はエレベータホールとこれに隣接する居室との間の附室扉に、この附室扉に加わる差圧を検出するための歪センサを設け、この歪センサからの検出歪量に応じて加圧給気ファンの回転駆動を制御する演算・制御手段を備えたので、歪センサからの信号により必要な附室扉の差圧が把握可能になり、この差圧に対応して加圧給気ファンの回転駆動を制御することで、扉の開閉障害を防止でき、且つ煙の流出拡散を防止することができる。又場合によっては、火災室(廊下)の温度が測定されており、この場合、温度と差圧のデータにより、消防隊活動時の扉の開閉による煙の進入の危険性の表示も可能となる。
【図面の簡単な説明】
【図1】本発明に係る加圧排煙システムの構成図である。
【図2】図1のA−A矢視図である。
【図3】図2のB−B断面図である。
【図4】本発明に係る加圧排煙システムのブロック図である。
【図5】本発明に係る加圧排煙システムの動作を説明するフローチャートである。
【符号の説明】
1…特別避難階段室、3…居室、5…附室又はエレベータホール、13…附室扉、19…加圧給気ファン、27…歪センサ、33…差圧センサ付扉、35…演算・制御手段、43…加圧排煙システム
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pressurized smoke exhaust system for exhausting air by supplying external air from a pressurized air supply fan to a special room or an elevator hall interposed between a special evacuation staircase room and a living room in the event of a fire, and a difference used therein. The present invention relates to a door with a pressure sensor.
[0002]
[Prior art]
In a building fire, etc., the smoke generated forms a smoke layer in the upper part of the living room, etc., and this smoke layer gradually falls downward and reaches a position lower than the upper end of the opening of the living room. It begins to flow into the ancillary room or elevator hall that is interposed between the staircase and the living room. For this reason, it is obliged that the ancillary rooms or elevator halls have smoke exhaust facilities. This kind of smoke exhaust system is a pressurized smoke exhaust system that pressurizes the attached room pressure higher than the pressure of the room where the fire occurred and prevents the smoke generated by the fire in the adjacent room from flowing into the attached room. There is.
[0003]
This pressurized flue gas system controls the amount of air supplied from the pressurized air supply fan to the ancillary room or elevator hall in the event of a fire, and an ancillary room between the ancillary room or the elevator hall and the adjacent room. The pressure applied to the door and the smoke are discharged. Conventionally, the control of the supply air amount is, for example, by measuring the differential pressure between the duct internal pressure and the external air pressure at several points in the middle of the air supply duct from the pressurized air supply fan. It was done by estimating the differential pressure.
[0004]
[Problems to be solved by the invention]
However, the above-described conventional pressurized smoke exhaust system estimates and controls the differential pressure between the front and rear of the target chamber door based on the differential pressure between the duct internal pressure and the external pressure in the middle of the air supply duct. In some cases, there was no guarantee that the differential pressure before and after reached the target value. In other words, because the differential pressure of the annex door according to the actual fire situation could not be grasped, there is a case where a sufficient differential pressure is not actually secured. In this case, smoke flows out into the annex. There was a fear. On the other hand, when an excessive differential pressure is acting on the attached door, there is a possibility that the opening and closing of the door may be hindered.
The present invention has been made in view of the above situation, and is capable of controlling the differential pressure acting on the chamber door to a predetermined differential pressure by grasping the actual differential pressure acting on the chamber door. It is an object of the present invention to provide a system and a door with a differential pressure sensor used therefor, and to prevent an opening / closing failure of the attached door and prevention of smoke outflow diffusion.
[0005]
[Means for Solving the Problems]
The pressurized smoke exhaust system according to the present invention allows compressed air to flow into the attached room or elevator hall interposed between the living room and the staircase from the living room by the pressurized air supply fan. In a pressurized smoke exhaust system that prevents inflow of smoke into a hall, an auxiliary room door provided between the auxiliary room or the elevator hall and the living room adjacent thereto is pressurized by the inflow of compressed air. Based on the pressing force detected by the sensor and the pressing force detected by the sensor, the differential pressure acting on the attached door is calculated, and the differential pressure is Computation / control means for controlling the rotational drive of the pressurized air supply fan so as to have a predetermined value is provided.
[0006]
In this pressurized smoke exhaust system, when the pressurized air supply fan is driven by receiving a smoke / heat sense signal, the compressed air flows into the ancillary room or elevator hall, and the adjoining room or elevator hall from the adjacent room Pressurized to high pressure. Then, the attached room door is pressed against the door contact side of the door frame, and the pressing force is detected by the strain sensor. The detected pressing force is calculated as a differential pressure between both sides sandwiching the attached door by the calculation / control means. The calculation / control means controls the rotational driving of the pressurized air supply fan so that the differential pressure becomes a predetermined value. As a result, the differential pressure between the living room and the attached room sandwiching the attached room door is appropriately maintained, and the opening / closing failure of the door and the outflow diffusion of smoke are prevented.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a pressurized smoke exhaust system according to the present invention will be described in detail with reference to the drawings.
1 is a configuration diagram of a pressurized smoke exhaust system according to the present invention, FIG. 2 is a view taken along arrow AA in FIG. 1, FIG. 3 is a sectional view taken along line BB in FIG. 2, and FIG. It is a block diagram of a smoke removal system.
[0010]
Between the special evacuation staircase 1 and the living room 3, an ancillary room or an elevator hall (hereinafter simply referred to as "ancillary room 5") is provided, and the ancillary room 5 is provided with a fireproof wall 7 which is a wall portion. And compartment 3 are formed. A door frame 9 is provided on the fire wall 7, and the door frame 9 supports an attached door 13 that can be opened and closed via a hinge 11. The attached room door 13 may be provided at least on the fireproof wall 7 between the living room 3 and the attached room 5 or may be provided on the fireproof wall 7 between the attached room 5 and the special escape staircase room 1. However, in either case, the attached room door 13 can be freely opened to the attached room side. This opening direction is important in order to detect the differential pressure using the attached door 13 described later.
[0011]
An air supply port 15 is opened in the auxiliary chamber 5, and the air supply port 15 is connected to a pressurized air supply fan 19 through an air supply duct 17. When the pressurized air supply fan 19 is driven, the external air is supplied as pressurized air to the auxiliary chamber 5 from the air supply port 15. The pressurized air supply fan 19 is driven and controlled by a calculation / control means described later.
[0012]
Further, a smoke exhaust port 21 is opened in the attached room 5, and the smoke exhaust port 21 is connected to a smoke exhaust fan (not shown) via a smoke exhaust duct 23. The smoke exhaust fan may be controlled by, for example, the calculation / control means described above. When the smoke exhaust fan is driven, the smoke in the attached room 5 is sucked from the smoke exhaust port 21 and discharged to the outside. Note that the air supply amount of the smoke exhaust fan is set to be sufficiently smaller than the air supply amount of the pressurized air supply fan 19.
[0013]
Therefore, when compressed air is introduced by the pressurized air supply fan 19, the auxiliary room 5 is pressurized to a higher pressure than the living room 3, and smoke is prevented from flowing into the auxiliary room 5 from the living room 3. In addition, in the attached room 5 where the inflow of smoke is prevented by such a configuration, the smoke outlet 21 is provided in a state other than the normal state (for example, when the attached door 13 is opened). This is to exhaust the smoke that has entered the attached room 5.
[0014]
A strain sensor 27, which is a differential pressure sensor shown in FIG. 3, is provided on the door frame 9 corresponding to the door knob 25 side of the attached door 13 shown in FIG. The strain sensor 27 is embedded in the door stop portion 29 of the door frame 9 and detects an external force in the door closing direction applied to the door 13 that is in contact with the door 13 that is closed, as a strain amount. ing. The strain sensor 27 is formed in a convex shape in a side view, and the protruding tip portion 27 a protrudes from the door stop portion 29. A fireproof coating 31 is provided around the protruding tip 27a, and the fireproof coating 31 protects the sensor main body 27b from heat from a fire. The door frame 9, the attached door 13, the strain sensor 27, and the fireproof covering material 31 constitute a differential pressure sensor door 33.
[0015]
The strain sensor 27 utilizes a so-called piezoelectric effect in which dielectric polarization is generated by an applied pressure and a charge proportional to the pressure appears. Specifically, a group of porcelain materials such as barium titanate and the like PZT (lead titanium zirconate) are mechanically strong and can be preferably used, and high sensitivity is required. For this, Rochelle salt or the like can be used.
[0016]
The strain sensor 27 is electrically connected to the calculation / control means 35 shown in FIG. As the calculation / control means 35, for example, a computer is used. When the building has a plurality of floors, the strain sensor (No. 1 to No. n) 27 of the door 33 with a differential pressure sensor for each floor is connected to the calculation / control means 35. A pressurized air supply fan 19 is connected to the calculation / control means 35 via an inverter 37. The frequency of the pressurized air supply fan 19 is controlled via the inverter 37 by a control signal sent from the calculation / control means 35. As a result, the rotation speed is variably controlled to control the air supply amount. ing.
[0017]
A smoke / heat sensor 39 is electrically connected to the calculation / control means 35. The smoke / heat sensor 39 detects a fire generated in each room 3 by smoke or heat, and sends a signal to the calculation / control means 35. Further, the storage means 41 is electrically connected to the calculation / control means 35. The storage means 41 stores data such as the area, height, hinge adjustment, strain-pressure difference conversion value, etc. of the compartment door 13. For example, when a computer is used as the calculation / control unit 35, the storage unit 41 can use an internal memory of the computer.
[0018]
Here, the force required to open the attached door 13 will be described.
The auxiliary door 13 requires a predetermined opening force due to the differential pressure between the auxiliary room 5 and the living room 3. If the force applied to the compartment door 13 is shown, the total moment applied to the stationary object is 0 (zero).
M + A · ΔP (W / 2) −F (W−d) = 0 (Expression 1)
It is.
Where
F: Total force required to open the door [N]
M: Moment of door closer and other friction force [Nm]
W: Width of door [m]
A: Door area [m 2 ]
ΔP: differential pressure across the door 13 [Pa]
d: Distance between door knob and end of attached door 13 [m]
And
[0019]
The moment due to the door closer and the frictional force includes a moment around the hinge due to the door closer, a frictional force of the hinge, a moment due to the frictional force between the door 13 and the door frame 9, and the like. The component force Fr at the position of the knob overcoming the door closer and other frictional forces is
Fr = M / (W−d)
It is.
Substituting this into (Equation 1)
F = Fr + W · A · ΔP / 2 (W−d) (Formula 2)
It becomes.
[0020]
Therefore, the total force (F) required to open the door and the differential pressure (P) sandwiching the attached door 13 are in a proportional relationship, and the value of either the force (F) or the differential pressure (P) is specified. By doing so, the other value can be specified.
[0021]
Next, the operation of the pressurized smoke exhaust system 43 configured as above will be described.
FIG. 5 is a flowchart for explaining the operation of the pressurized smoke exhaust system according to the present invention.
When the smoke / heat sensor 39 provided in the living room 3 detects a fire, the signal is received by the calculation / control means 35, and the calculation / control means 35 starts the pressurized air supply fan 19. When the pressurized air supply fan 19 is driven, compressed air flows into the ancillary chamber 5 and the ancillary chamber 5 is pressurized to a higher pressure than the adjacent living room 3. Then, the attached door 13 is pressed against the door contact portion 29 side of the door frame 9, and the pressing force is detected by the strain sensor 27 of the door 33 with the differential pressure sensor. The detected pressing force is calculated by the calculation / control means 35 as a differential pressure ΔP on both sides of the chamber door 13. The calculation / control means 35 controls the rotation driving of the pressurized air supply fan 19 via the inverter 37 so that the differential pressure ΔP becomes a predetermined value. Thereby, the differential pressure ΔP between the living room 3 and the attached room 5 sandwiching the attached room door 13 is appropriately maintained, and the total force F required for opening the door becomes a predetermined value, and the open / close trouble of the attached room door 13 is Smoke outflow diffusion is prevented.
[0022]
As described above, according to the pressurized smoke exhaust system 43 described above, the differential pressure of the attached door 13 can be grasped by the signal from the strain sensor 27, and the pressurized air supply fan 19 is set in correspondence with this differential pressure. Since the control is performed, it is possible to prevent the opening and closing trouble of the attached door 13 and to prevent the smoke from flowing out and diffusing.
Moreover, according to the door 33 with a differential pressure sensor, it can grasp | ascertain easily and reliably the pressure difference of both space which pinches | interposed the door 13 with a simple structure.
[0023]
In the above-described embodiment, the case where the strain sensor 27 is provided in the door contact portion 29 of the door frame 9 has been described as an example. However, the pressurized smoke exhaust system according to the present invention or the door with a differential pressure sensor used therefor is Even if the strain sensor 27 is provided on the door 13 of the room, the same actions and effects as described above can be obtained.
[0024]
【The invention's effect】
As described above in detail, the pressurized smoke exhaust system according to the present invention detects the differential pressure applied to the door of the attached room between the attached room or the elevator hall and the adjacent room door. And a calculation / control means for controlling the rotational drive of the pressurized air supply fan in accordance with the amount of strain detected from the strain sensor. It becomes possible to grasp the differential pressure, and by controlling the rotational drive of the pressurized air supply fan in response to this differential pressure, it is possible to prevent the door from opening and closing and to prevent the smoke from spreading out. In some cases, the temperature of the fire room (corridor) is measured, and in this case, the temperature and differential pressure data can be used to indicate the danger of smoke entering due to opening and closing of the door during fire brigade activities. .
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a pressurized smoke exhaust system according to the present invention.
FIG. 2 is a view taken in the direction of arrows AA in FIG.
3 is a cross-sectional view taken along the line BB in FIG.
FIG. 4 is a block diagram of a pressurized smoke exhaust system according to the present invention.
FIG. 5 is a flowchart for explaining the operation of the pressurized smoke exhaust system according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Special evacuation staircase room, 3 ... Living room, 5 ... Attached room or elevator hall, 13 ... Attached room door, 19 ... Pressurized air supply fan, 27 ... Strain sensor, 33 ... Door with differential pressure sensor, 35 ... Calculation / Control means, 43 ... pressurized smoke exhaust system

Claims (1)

居室と階段室との間に介在する附室又はエレベータホールに、加圧給気ファンにより圧縮空気を流入させることにより、前記居室から前記附室又はエレベータホールへの煙の流入を防止する加圧排煙システムにおいて、
前記附室又はエレベータホールとこれに隣接する前記居室との間に設けられた附室扉が、前記圧縮空気の流入により加圧されて扉枠の戸当たり部に押し付けられるときの押圧力を検出するセンサと、
前記センサによって検出された前記押圧力に基づいて、前記附室扉に作用する差圧を演算し、当該差圧が所定の値となるように前記加圧給気ファンの回転駆動を制御する演算・制御手段と
を備えたことを特徴とする加圧排煙システム。
Pressurization that prevents inflow of smoke from the living room to the ancillary room or elevator hall by allowing compressed air to flow into the ancillary room or elevator hall that is interposed between the living room and the staircase. In the smoke exhaust system,
Detecting a pressing force when an additional room door provided between the auxiliary room or the elevator hall and the living room adjacent thereto is pressurized by the inflow of the compressed air and pressed against the door stop portion of the door frame A sensor to
Based on the pressing force detected by the sensor, a differential pressure acting on the chamber door is calculated, and a rotation control of the pressurized air supply fan is controlled so that the differential pressure becomes a predetermined value. A pressurized smoke exhaust system characterized by comprising a control means.
JP30911899A 1999-10-29 1999-10-29 Pressurized smoke exhaust system Expired - Fee Related JP4230071B2 (en)

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Application Number Priority Date Filing Date Title
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JP30911899A JP4230071B2 (en) 1999-10-29 1999-10-29 Pressurized smoke exhaust system

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Publication number Priority date Publication date Assignee Title
JP2003019221A (en) * 2001-07-09 2003-01-21 Taisei Corp Added room pressurizing/smoke-discharging system
KR100932628B1 (en) * 2007-10-31 2009-12-17 유병규 How to smoke in high-rise buildings
KR101044021B1 (en) * 2009-06-12 2011-06-23 (주) 아이레보 금강씨에스 Control method of an apparatus for forming limited area
KR101223239B1 (en) 2010-10-28 2013-01-21 주식회사 페스텍 Supply damper of separating the leakage air flow and the supplementary air flow, and its control method
KR101516232B1 (en) * 2013-05-30 2015-05-04 박재현 Smoke control system
KR102050539B1 (en) * 2017-11-10 2019-12-02 주식회사 정우에이앤씨 Fire Emergency Evacuation Safety System
US11339026B2 (en) 2017-11-28 2022-05-24 Otis Elevator Company System for processing pressure sensor data
KR102009894B1 (en) * 2019-03-14 2019-08-12 진병래 Smoke-inducing Device for Buildings and Smoke-inducing Method using the Same

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