JPS6323455B2 - - Google Patents
Info
- Publication number
- JPS6323455B2 JPS6323455B2 JP54158483A JP15848379A JPS6323455B2 JP S6323455 B2 JPS6323455 B2 JP S6323455B2 JP 54158483 A JP54158483 A JP 54158483A JP 15848379 A JP15848379 A JP 15848379A JP S6323455 B2 JPS6323455 B2 JP S6323455B2
- Authority
- JP
- Japan
- Prior art keywords
- smoke exhaust
- opening
- frame
- decorative
- opening edge
- 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.)
- Expired
Links
- 239000000779 smoke Substances 0.000 claims description 86
- 239000000463 material Substances 0.000 claims description 9
- 230000009970 fire resistant effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000012856 packing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
- Ventilation (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、排煙口の取付け構造に関し、詳しく
は建築物における機械排煙設備の性能向上対策の
一環として、ダクト系の空気洩れを少なくできる
ようにした排煙口の取付け構造に関するものであ
る。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to the mounting structure of a smoke exhaust port, and more specifically, as part of measures to improve the performance of mechanical smoke exhaust equipment in buildings, it is used to reduce air leakage in a duct system. The present invention relates to a structure for attaching a smoke exhaust port.
従来、機械排煙設備は、建設省監修の「排煙設
備技術基準」に基づく計算手法及び施工仕様で施
工されてきた。第２図は従来の機械排煙設備にお
ける排煙口の取付け構造を示している。
Traditionally, mechanical smoke exhaust equipment has been constructed using calculation methods and construction specifications based on the ``Technical Standards for Smoke Exhaust Equipment'' supervised by the Ministry of Construction. FIG. 2 shows the mounting structure of a smoke exhaust port in a conventional mechanical smoke exhaust system.
しかしながら、現状ではダクト系の洩れ量は予
想以上に大きく、殊に、大規模な建築物の排煙設
備においては、高速ダクト方式の採用及びダクト
系の必要静圧の増大に伴つて洩れ量が増大するた
め、排煙口に対する必要排風量を確保し難くなつ
ており、防災上、「洩れの防止」が機械排煙設備
の問題点として近年大きくクローズアツプされる
に至つている。 However, the amount of leakage from duct systems is currently larger than expected, and in particular, the amount of leakage is increasing with the adoption of high-speed duct systems and the increase in the required static pressure of duct systems, especially in smoke exhaust equipment for large-scale buildings. Due to this increase, it has become difficult to secure the required amount of exhaust air from the smoke exhaust port, and in recent years, ``prevention of leakage'' has come to the fore as a problem with mechanical smoke exhaust equipment in terms of disaster prevention.
〔発明が解決しようとする問題点〕
そこで、本発明者らは、排煙ダクト系における
各部位の洩れ量及びその原因を追求すべく、第１
図に示すような静圧の大きい排煙機１、排煙ダク
ト２、ダクト接続用フランジ部３、ダクト補強部
４、分岐部５、ハゼ部６、排煙ダンパー７、短管
取出し部８、排煙口取付け部９、排煙口１０等を
備えた機械排煙設備について数々の試験を重ねた
結果、第３図に示す如く、排煙口取付け部９及び
短管取出し部８の洩れがダクト系全体の洩れ量の
大半を占めており、とりわけ排煙口取付け部９の
洩れの占める割合がずはぬけて大きいという事実
を知見し、その原因が次の点にあることを見出し
た。[Problems to be solved by the invention] Therefore, the present inventors conducted the first research in order to investigate the amount of leakage from each part of the smoke exhaust duct system and its causes.
As shown in the figure, a smoke evacuation device 1 with a large static pressure, a smoke evacuation duct 2, a duct connection flange portion 3, a duct reinforcement portion 4, a branch portion 5, a seam portion 6, a smoke evacuation damper 7, a short pipe take-out portion 8, As a result of numerous tests on mechanical smoke exhaust equipment equipped with a smoke exhaust port attachment part 9, a smoke exhaust outlet 10, etc., as shown in Fig. It was discovered that the majority of leakage in the entire duct system was accounted for, and that the proportion of leakage from the smoke exhaust port attachment part 9 in particular was far greater than expected, and the cause was found to be as follows.
即ち、従来の排煙口（これは揺動開閉自在なダ
ンパーを備えたものであり、工場生産される。）
１０は、第２図に示すように、短管１１と別個の
作製されていた。そして同図に示すように、排煙
ダクト２を上階のスラブ下方に吊り込み、該ダク
ト２の底壁に形成された開口の縁部に、短管１１
の上端開口縁を現場加工によるハゼ締めによつて
取り付け、次いで天井板１２を天井下地材に取り
付け、しかる後、前記排煙口１０を前記短管１１
の下端開口縁にビス止め等の手段により取り付け
て、天井板１２の開口縁部を排煙口１０で隠蔽す
るように構成されていた。 That is, a conventional smoke exhaust vent (this is equipped with a damper that can swing open and close, and is manufactured in a factory).
10 was manufactured separately from the short tube 11, as shown in FIG. As shown in the figure, the smoke exhaust duct 2 is suspended below the slab on the upper floor, and a short pipe 11 is attached to the edge of the opening formed in the bottom wall of the duct 2.
The upper opening edge is attached by on-site machining, and then the ceiling plate 12 is attached to the ceiling base material. After that, the smoke exhaust port 10 is attached to the short pipe 11.
The opening edge of the ceiling plate 12 is concealed by the smoke exhaust port 10 by attaching it to the lower opening edge of the ceiling plate 12 by means of screws or the like.
従つて、短管１１は、天井板１２を取り付ける
際に作業の邪魔にならないよう短めに設定され、
天井板１２の高さ位置よりも若干上方へ引つ込ん
だ状態に配置される。一方、排煙口１０の上限位
置は天井板１２下面への当接により規定されるこ
とになる。 Therefore, the short pipe 11 is set short so as not to interfere with the work when installing the ceiling plate 12,
It is arranged in a slightly recessed state above the height position of the ceiling plate 12. On the other hand, the upper limit position of the smoke exhaust port 10 is defined by its contact with the lower surface of the ceiling plate 12.
そのため、排煙口１０にパツキン１０ａを付設
してあつても、該パツキン１０ａと短管１１の下
端開口縁とを密着させにくく、排煙口取付け部９
に隙間が生じやすいのである。しかも排煙口１０
の短管１１への取付けが排煙口１０内方からの片
面作業となるので、上記の隙間の確認、閉塞は困
難であり、これらの結果、短管１１に対する排煙
口１０の取付け部９における洩れ量が予想以上に
大きくなつていたのである。 Therefore, even if the gasket 10a is attached to the smoke exhaust port 10, it is difficult to bring the gasket 10a into close contact with the lower end opening edge of the short pipe 11, and the smoke exhaust port mounting portion 9
It is easy for gaps to occur between the two. And smoke exhaust port 10
Since the installation to the short pipe 11 is a one-sided operation from inside the smoke exhaust port 10, it is difficult to check and close the above-mentioned gap.As a result, the attachment part 9 of the smoke exhaust port 10 to the short pipe 11 The amount of leakage was larger than expected.
また排煙ダクト２の底壁に形成された開口の縁
部に、短管１１の上端開口縁を現場加工によるハ
ゼ締めによつて取り付けているので、ハゼ締め部
の加工精度を確保しがたく、そのために、短管取
出し部８の洩れ量も比較的大きくなつていたので
ある。 In addition, since the upper end opening edge of the short pipe 11 is attached to the edge of the opening formed in the bottom wall of the smoke exhaust duct 2 by on-site machining, it is difficult to ensure the machining accuracy of the edge tightening part. Therefore, the amount of leakage from the short pipe take-out portion 8 was also relatively large.
本発明は、このような知見に基づいてなされた
もので、従来排煙ダクト系において洩れ量が大き
かつた二つの部位（排煙口取付け部９と短管取出
し部８）での洩れ量を皆無ならしめることによ
り、排煙設備の性能を向上することができ、しか
も躯体スラブ下に吊り込まれた排煙ダクトと天井
板との間隔に多少の誤差があつても、排煙口等の
取付け作業に支障のない施工性の良い排煙口の取
付け構造を提供することを目的としている。 The present invention has been made based on such knowledge, and has been developed to reduce the amount of leakage at two parts (the smoke exhaust port attachment part 9 and the short pipe take-out part 8), where the amount of leakage was large in the conventional smoke exhaust duct system. By eliminating all of them, the performance of the smoke exhaust equipment can be improved.Moreover, even if there is some error in the distance between the smoke exhaust duct suspended under the frame slab and the ceiling board, the smoke exhaust vent etc. The purpose of the present invention is to provide a structure for mounting a smoke exhaust port that is easy to construct and does not hinder installation work.
上記の目的を達成するために、本発明は、上端
開口縁部に開口部内方へ折れ曲がつた取付け部を
有し、下端開口縁部には下方へ開口した溝を有す
る筒状枠体と当該筒状枠体に揺動開閉自在に枢支
されたダンパーとを備えた排煙口を、排煙ダクト
の底壁に形成された開口の縁部に、前記筒状枠体
の取付け部と排煙ダクト底壁の開口縁部との間に
耐火性パツキンを介装すると共に、これらを断面
略Ｕ字形状を呈する取り付け金物で挟み且つボル
ト締めした状態に取り付け、天井下地材には、天
井板の開口縁部を穏蔽する化粧用開口枠を、その
周囲複数箇所に設けられた吊り金具と当該吊り金
具に螺装された前記化粧用開口枠の高さ調節用の
ボルトとによつて、前記化粧用開口枠が天井板の
開口縁部下面に当接した状態に取り付け、当該化
粧用開口枠に下端を支持させた化粧板の上端部を
前記筒状枠体の溝に嵌入したものである。
In order to achieve the above object, the present invention includes a cylindrical frame having a mounting portion bent inward of the opening at the upper opening edge and a groove opening downward at the lower opening edge. A smoke exhaust port equipped with a damper pivotally supported on the cylindrical frame so as to be able to swing open and close is attached to the mounting part of the cylindrical frame and to the edge of the opening formed in the bottom wall of the smoke exhaust duct. A fire-resistant gasket is interposed between the opening edge of the bottom wall of the smoke exhaust duct, and these are sandwiched between mounting hardware having a roughly U-shaped cross section and bolted. A decorative opening frame that moderates the edge of the opening of a board is provided by hanging fittings provided at multiple locations around the decorative opening frame and bolts for adjusting the height of the decorative opening frame screwed onto the hanging fittings. , the decorative opening frame is installed in a state in which it is in contact with the lower surface of the opening edge of the ceiling board, and the upper end of the decorative board whose lower end is supported by the decorative opening frame is fitted into the groove of the cylindrical frame. It is.
上記の構成によれば、排煙口の筒状枠体の上端
開口縁部を排煙ダクトの底壁の開口縁部に接続し
ており、言わば排煙口が従来の短管と従来の排煙
口とを一体化した如き構造であるため、従来洩れ
量が最も大きかつた排煙口取付け部（短管と排煙
口の接続部）がなくなり、この部位からの洩れが
皆無となる。
According to the above configuration, the upper opening edge of the cylindrical frame of the smoke exhaust port is connected to the opening edge of the bottom wall of the smoke exhaust duct. Since the structure is such that the smoke outlet is integrated with the smoke outlet, there is no longer a smoke outlet attachment part (the connection between the short pipe and the smoke outlet), which conventionally had the largest amount of leakage, and there is no leakage from this part.
しかも排煙口の筒状枠体の上端開口縁部と排煙
ダクト底壁の開口縁部とは、両者間に耐火性パツ
キンを介装すると共に、これらを断面略Ｕ字形状
を呈する取り付け金物で挟み且つボルト締めした
状態に取り付けられているので、従来の短管取出
し部のような現場加工によるハゼ締めが不要であ
り、ハゼ締め部の精度誤差に起因していた短管取
出し部からの洩れが無くなることになる。 Moreover, the upper end opening edge of the cylindrical frame of the smoke exhaust port and the opening edge of the bottom wall of the smoke exhaust duct are interposed with a fire-resistant packing between them, and a mounting hardware having a substantially U-shaped cross section is used to connect them. Since it is mounted in a state where it is clamped and bolted, there is no need for on-site tightening like the conventional short pipe take-out part, and it eliminates the need for tightening from the short pipe take-out part, which was caused by accuracy errors in the joint tightening part. This will eliminate leakage.
また、天井板の開口縁部を隠蔽する化粧用開口
枠を吊り金具と高さ調節用のボルトとによつて天
井下地材に取り付け、当該化粧用開口枠に下端を
支持させた化粧板の上端部を前記筒状枠体の溝に
嵌入するようにしたので、躯体スラブ下に吊り込
まれた排煙ダクトと天井板との間隔に多少の誤差
があつても、化粧用開口枠の高さ調節ならびに筒
状枠体下端開口縁部の溝に対する化粧板上端部の
挿入量の変化によつてこの誤差を吸収できる。 In addition, a decorative opening frame for concealing the opening edge of the ceiling board is attached to the ceiling base material using hanging metal fittings and height adjustment bolts, and the upper end of the decorative board is supported at its lower end by the decorative opening frame. Since the part is fitted into the groove of the cylindrical frame, even if there is some error in the distance between the smoke exhaust duct suspended under the frame slab and the ceiling plate, the height of the decorative opening frame can be maintained. This error can be absorbed by adjustment and by changing the amount of insertion of the upper end of the decorative plate into the groove of the opening edge at the lower end of the cylindrical frame.
以下、本発明の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第４図〜第６図は本発明に係る排煙口１０の取
付け構造を示す。前記排煙口１０は、横造面四角
形状の筒状枠体１０′と、当該筒状枠体１０′に支
点１４′周りで揺動開閉自在に枢支されたダンパ
ー１３とを備えている。前記筒状枠体１０′の上
端開口縁部には、山形鋼等よりなる開口部内方へ
折れ曲がつた取付け部１５が設けられている。該
取付け部１５は、排煙ダクト２の底壁に形成した
開口の縁部と前記取付け部１５との間に石綿等の
耐火性パツキン１６を介装すると共に、これらを
断面略Ｕ字形状を呈する取付け金物１７で挟み、
下方からの操作によつてボルト１８締めするよう
に構成されている。１９は取付け金物１７の下面
に溶接されたナツト、２０はダンパー１３を開方
向に付勢するスプリング、２１はシヨツクアブソ
ーバーである。 4 to 6 show the mounting structure of the smoke exhaust port 10 according to the present invention. The smoke exhaust port 10 includes a cylindrical frame 10' having a rectangular horizontal surface, and a damper 13 pivotally supported on the cylindrical frame 10' around a fulcrum 14' so as to be able to swing open and close. . At the upper opening edge of the cylindrical frame 10', a mounting portion 15 made of angle iron or the like and bent inward of the opening is provided. The attachment part 15 has a fire-resistant packing 16 such as asbestos interposed between the edge of the opening formed in the bottom wall of the smoke exhaust duct 2 and the attachment part 15, and has a substantially U-shaped cross section. sandwiched between the mounting hardware 17 shown,
The bolt 18 is configured to be tightened by operating from below. 19 is a nut welded to the lower surface of the mounting hardware 17, 20 is a spring that biases the damper 13 in the opening direction, and 21 is a shock absorber.
また前記筒状枠体１０′の下端開口縁部には、
下方に開口する溝２２が形成されている。２３ａ
は化粧板、２３ａは天井板１２の開口縁部を穏蔽
する矩形状の化粧用開口枠であり、これらによつ
て排煙口１０と天井板１２の開口縁部との間隙を
閉塞する化粧枠１４を構成している。前記化粧用
開口枠２３ｂには、周囲複数個所に吊り金具２４
を該吊り金具２４を天井下地材２５に支持させる
高さ調節用のボルト２６とが設けられていて、天
井板１２を天井下地材２５に取り付けた後、ボル
ト２６を操作して化粧用開口枠２３ｂを天井板１
２の開口部の縁部下面に当接させ、この状態で、
前記化粧板２３ａの上端部を前記溝２２内に差し
込み、該化粧板２３ａの下端を前記開口枠部２３
ｂに支持させるようになつている。 Further, at the lower opening edge of the cylindrical frame 10',
A groove 22 opening downward is formed. 23a
23a is a decorative board, and 23a is a rectangular decorative opening frame that covers the opening edge of the ceiling board 12, thereby closing the gap between the smoke outlet 10 and the opening edge of the ceiling board 12. It constitutes a frame 14. Hanging fittings 24 are provided at multiple locations around the cosmetic opening frame 23b.
and bolts 26 for height adjustment to support the hanging fittings 24 to the ceiling base material 25. After attaching the ceiling plate 12 to the ceiling base material 25, the bolts 26 are operated to open the decorative opening frame. 23b as ceiling plate 1
2, and in this state,
The upper end of the decorative board 23a is inserted into the groove 22, and the lower end of the decorative board 23a is inserted into the opening frame 23.
It is designed to be supported by b.
上記の排煙口１０の取付け方法は次の通りであ
る。 The method for installing the smoke exhaust port 10 described above is as follows.
先ず、第４図に示すように、排煙ダクト２を上
階のスラブ下方に吊り込み、次いで、前記排煙口
１０を、前記排煙ダクト２の底壁の開口縁部に、
前記耐火性パツキン１６、断面略Ｕ字形状の取付
け金物１７、ボルト１８等を介して取り付ける。 First, as shown in FIG. 4, the smoke exhaust duct 2 is suspended below the slab on the upper floor, and then the smoke exhaust port 10 is installed at the opening edge of the bottom wall of the smoke exhaust duct 2.
It is attached via the fireproof gasket 16, a mounting hardware 17 having a substantially U-shaped cross section, bolts 18, and the like.
しかる後、天井板１２を天井下地材２５に取り
付けると共に、当該天井下地材２５に化粧用開口
枠２３ｂを、前記吊り金具２４、該吊り金具２４
を介して取り付け、この状態で、前記溝２２と化
粧用開口枠２３ｂとの間に化粧板２３ａを嵌め込
み、天井板１２の開口縁部と排煙口１０との間隙
を化粧枠１４で閉塞するのである。 Thereafter, the ceiling board 12 is attached to the ceiling base material 25, and the decorative opening frame 23b is attached to the ceiling base material 25, and the hanging metal fittings 24 and the hanging metal fittings 24 are attached to the ceiling base material 25.
In this state, the decorative board 23a is fitted between the groove 22 and the decorative opening frame 23b, and the gap between the opening edge of the ceiling board 12 and the smoke exhaust port 10 is closed with the decorative frame 14. It is.
上記の構成によれば、排煙口１０における筒状
枠体１０′が、従来の短管と排煙口とを工場生産
により予め一体成形した如き構造であるので、従
来、最も洩れ量が大きかつた部位（第１図及び第
３図で示した排煙口取付け部９）での洩れは皆無
である。 According to the above structure, the cylindrical frame 10' of the smoke exhaust port 10 has a structure in which a conventional short pipe and a smoke exhaust port are integrally molded in advance by factory production, so that the leakage amount is the largest in the past. There was no leakage at the exposed part (the smoke exhaust port attachment part 9 shown in FIGS. 1 and 3).
また排煙ダクト２に対する排煙口１０の筒状枠
体１０′の上端開口縁部の取付けが耐火性パツキ
ン１６、断面略Ｕ字形状の取付け金物１７、ボル
ト１８等を介して行われているので、この部位で
の洩れ量も極めて小さいものとなる。 Further, the upper opening edge of the cylindrical frame 10' of the smoke exhaust port 10 is attached to the smoke exhaust duct 2 via a fireproof packing 16, a mounting hardware 17 having a substantially U-shaped cross section, bolts 18, etc. Therefore, the amount of leakage at this location is also extremely small.
因に、試作品を用いた実験によれば、第７図に
示すように、従来の短管取出し部８に相当する排
煙口取付け部での洩れ量は６位にダウンし、従来
の排煙口取付け部９に相当する部位での洩れはゼ
ロであり、これらの合計を比較すると、洩れ量は
１／３５０程度に減少した。 Incidentally, according to experiments using a prototype, as shown in Figure 7, the amount of leakage at the smoke exhaust port attachment part, which corresponds to the conventional short pipe outlet 8, was down to 6th place, compared to the conventional exhaust outlet. There was no leakage at the part corresponding to the smoke port attachment part 9, and when comparing these totals, the leakage amount was reduced to about 1/350.
本発明は、上述した構成よりなるため、次の効
果を奏し得るのである。
Since the present invention has the above-described configuration, it can achieve the following effects.
排煙口の筒状枠体の上端開口縁部を排煙ダク
トの底壁の開口縁部に接続しており、言わば排
煙口が従来の短管と従来の排煙口とを一体化し
た如き構造であるため、従来洩れ量が最も大き
かつた排煙口取付け部（短管と排煙口の接続
部）がなくなり、この部位からの洩れが皆無と
なる。しかも排煙口の筒状枠体の上端開口縁部
と排煙ダクト底壁の開口縁部とは、両者間に耐
火性パツキンを介装すると共に、これらを断面
略Ｕ字形状を呈する取り付け金物で挟み且つボ
ルト締めした状態に取り付けられているので、
従来の短管取出し部のような現場加工によるハ
ゼ締めが不要であり、ハゼ締め部の精度誤差に
起因していた短管取出し部からの洩れが無くな
り、この部位での洩れが極めて少ない。 The upper opening edge of the cylindrical frame of the smoke exhaust port is connected to the opening edge of the bottom wall of the smoke exhaust duct, so that the smoke exhaust port integrates a conventional short pipe and a conventional smoke exhaust port. Because of this structure, the smoke exhaust port attachment part (the connection between the short pipe and the smoke exhaust port), which conventionally had the largest amount of leakage, is eliminated, and there is no leakage from this part. Moreover, the upper end opening edge of the cylindrical frame of the smoke exhaust port and the opening edge of the bottom wall of the smoke exhaust duct are interposed with a fire-resistant packing between them, and a mounting hardware having a substantially U-shaped cross section is used to connect them. Since it is installed in a state where it is sandwiched and bolted,
There is no need for on-site tightening like the conventional short pipe take-out part, and there is no leakage from the short pipe take-out part that was caused by accuracy errors in the joint tightening part, and there is extremely little leakage at this location.
このように、従来、洩れ量が多かつた二つの
部位での洩れ量が略皆無に近く、排煙設備の性
能を向上することができる。 In this way, the amount of leakage from the two parts, which conventionally had a large amount of leakage, is almost zero, and the performance of the smoke exhaust equipment can be improved.
排煙口の筒状枠体の下端開口縁部に下方に開
口する溝を設け、天井板の開口縁部を穏蔽する
化粧用開口枠を、その周囲複数箇所に設けられ
た吊り金具と当該吊り金具に螺装された前記化
粧用開口枠の高さ調節用のボルトとによつて、
天井下地材に前記化粧用開口枠が天井板の開口
縁部下面に当接した状態に取り付け、当該化粧
用開口枠に下端を支持させた化粧板の上端部を
前記筒状枠体の溝に嵌入するようにしたので、
躯体スラブ下に吊り込まれた排煙ダクトと天井
板との間隔に多少の誤差があつても、化粧用開
口枠の高さ調節ならびに前記溝に対する化粧板
上端部の挿入量の変化によつて、この誤差を吸
収でき、排煙口、化粧板、天井板等の取付けに
支障がなく、また排煙口の筒状枠体の上端開口
縁部を排煙ダクト底壁の開口縁部に、耐火性パ
ツキン、断面略Ｕ字形状の取り付け金物、ボル
ト等を介して取り付けるので、現場でのハゼ締
め作業が要らず、施工性が良い。 A groove that opens downward is provided at the lower opening edge of the cylindrical frame of the smoke exhaust vent, and a decorative opening frame is provided to moderate the opening edge of the ceiling board, and hanging fittings are installed at multiple locations around the opening edge. and a bolt for adjusting the height of the decorative opening frame screwed onto the hanging fitting.
The decorative opening frame is attached to the ceiling base material in a state in which it is in contact with the lower surface of the opening edge of the ceiling board, and the upper end of the decorative board whose lower end is supported by the decorative opening frame is placed in the groove of the cylindrical frame. I made it fit in, so
Even if there is some error in the spacing between the smoke exhaust duct suspended under the frame slab and the ceiling board, it can be fixed by adjusting the height of the decorative opening frame and changing the amount of insertion of the upper end of the decorative board into the groove. , this error can be absorbed, there is no problem in installing the smoke exhaust vent, decorative board, ceiling board, etc., and the upper opening edge of the cylindrical frame of the smoke exhaust vent can be attached to the opening edge of the bottom wall of the smoke exhaust duct. Since it is attached via fire-resistant gaskets, mounting hardware with a roughly U-shaped cross section, bolts, etc., there is no need for on-site tightening work, making it easy to install.
第１図は機械排煙設備の説明図、第２図は従来
例を示す概念図、第３図は従来例による洩れ量を
示すグラフである。第４図は本発明の実施例を示
す排煙口の取付け構造の概念図、第５図と第６図
はは排煙口の取付け構造の縦断側面図と一部切欠
平面図、第７図は実験結果を示すグラフである。
２…排煙ダクト、１０…排煙口、１０′…筒状
枠体、１２…天井板、１３…ダンパー、１５…取
付け部、１６…耐火性パツキン、１７…取付け金
物、１８…ボルト、２２…溝、２３ａ…化粧板、
２３ｂ…化粧用開口枠、２４…吊り金具、２６…
ボルト。
FIG. 1 is an explanatory diagram of a mechanical smoke exhaust system, FIG. 2 is a conceptual diagram showing a conventional example, and FIG. 3 is a graph showing the amount of leakage in the conventional example. FIG. 4 is a conceptual diagram of a smoke exhaust port mounting structure showing an embodiment of the present invention, FIGS. 5 and 6 are a vertical side view and a partially cutaway plan view of the smoke exhaust port mounting structure, and FIG. 7 is a graph showing experimental results. 2...Smoke exhaust duct, 10...Smoke exhaust port, 10'...Cylindrical frame, 12...Ceiling plate, 13...Damper, 15...Mounting part, 16...Fireproof packing, 17...Mounting hardware, 18...Bolt, 22 ... Groove, 23a... Decorative board,
23b... Cosmetic opening frame, 24... Hanging fittings, 26...
bolt.
Claims (1)
付け部１５を有し、下端開口縁部には下方へ開口
した溝２２を有する筒状枠体１０′と当該筒状枠
体１０′に揺動開閉自在に枢支されたダンパー１
３とを備えた排煙口１０を、排煙ダクト２の底壁
に形成された開口の縁部に、前記筒状枠体１０′
の取付け部１５と排煙ダクト２底壁の開口縁部と
の間に耐火性パツキン１６を介装すると共に、こ
れらを断面略Ｕ字形状を呈する取り付け金物１７
で挟み且つボルト１８締めした状態に取り付け、
天井下地材２５には、天井板１２の開口縁部を隠
蔽する化粧用開口枠２３ｂを、その周囲複数箇所
に設けられた吊り金具２４と当該吊り金具２４に
螺装された前記化粧用開口枠２３ｂの高さ調節用
のボルト２６とによつて、前記化粧用開口枠２３
ｂが天井板１２の開口縁部下面に当接した状態に
取り付け、当該化粧用開口枠２３ｂに下端を支持
させた化粧板２３ａの上端部を前記筒状枠体１
０′の溝２２に嵌入してあることを特徴とする排
煙口の取付け構造。1. A cylindrical frame 10' having a mounting portion 15 bent inward at the upper opening edge and a groove 22 opening downward at the lower opening edge, and the cylindrical frame 10' Damper 1 pivotably supported to swing open and close
3 is attached to the edge of the opening formed in the bottom wall of the smoke exhaust duct 2.
A fire-resistant gasket 16 is interposed between the mounting portion 15 of the smoke exhaust duct 2 and the opening edge of the bottom wall of the smoke exhaust duct 2, and a mounting metal fitting 17 having a substantially U-shaped cross section is inserted between the two.
Attach it with the screws in place and tighten the bolts 18,
The ceiling base material 25 includes a decorative opening frame 23b that hides the opening edge of the ceiling board 12, hanging fittings 24 provided at multiple locations around the decorative opening frame 23b, and the decorative opening frame screwed onto the hanging fittings 24. The decorative opening frame 23 is fixed by the height adjusting bolt 26 of 23b.
b is attached to the lower surface of the opening edge of the ceiling board 12, and the upper end of the decorative board 23a whose lower end is supported by the decorative opening frame 23b is attached to the cylindrical frame 1.
A mounting structure for a smoke exhaust port, characterized in that it is fitted into a groove 22 at 0'.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15848379A JPS5680269A (en) | 1979-12-05 | 1979-12-05 | Smoke discharging port and its mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15848379A JPS5680269A (en) | 1979-12-05 | 1979-12-05 | Smoke discharging port and its mounting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5680269A JPS5680269A (en) | 1981-07-01 |
| JPS6323455B2 true JPS6323455B2 (en) | 1988-05-17 |
Family
ID=15672717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15848379A Granted JPS5680269A (en) | 1979-12-05 | 1979-12-05 | Smoke discharging port and its mounting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5680269A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213675A (en) * | 1988-06-28 | 1990-01-18 | Nippon Bunmei Shutter Kk | Locking mechanism for electrically driven rain door |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503968Y2 (en) * | 1972-04-27 | 1975-02-01 |
-
1979
- 1979-12-05 JP JP15848379A patent/JPS5680269A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213675A (en) * | 1988-06-28 | 1990-01-18 | Nippon Bunmei Shutter Kk | Locking mechanism for electrically driven rain door |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5680269A (en) | 1981-07-01 |
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