JP2005009221A - Vent hood - Google Patents

Vent hood Download PDF

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Publication number
JP2005009221A
JP2005009221A JP2003176213A JP2003176213A JP2005009221A JP 2005009221 A JP2005009221 A JP 2005009221A JP 2003176213 A JP2003176213 A JP 2003176213A JP 2003176213 A JP2003176213 A JP 2003176213A JP 2005009221 A JP2005009221 A JP 2005009221A
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JP
Japan
Prior art keywords
vent
tilted
flap
hood
fire damper
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JP2003176213A
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Japanese (ja)
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JP4133618B2 (en
Inventor
Koji Kato
宏治 加藤
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Aluteck Co Ltd
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Aluteck Co Ltd
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Priority to JP2003176213A priority Critical patent/JP4133618B2/en
Publication of JP2005009221A publication Critical patent/JP2005009221A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To visually confirm that a vent hood installed on the wall face of a building is not blocked by a fire preventing damper. <P>SOLUTION: The vent hood 18 in which the fire preventing damper 9 is mounted comprises a flap 20 pivotally mounted at the lower end of a hood portion 5 in a tilting manner and suspended down along the wall face 1 of the building and having a flow path blocking display attached to the reverse facing to the wall face 1, when suspended down, as a display means forming the flow path blocking display which can be visually identified from the outside when the fire preventing damper 9 is unconstrained and tilted to a block position, and a flexible string body 21 connecting a proper portion on the surface of the flap 20 to a portion to be tilted to the corner side of a vent flow path 10 when the fire preventing damper 9 is tilted to the block position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、ベントフードに関するものである。
【0002】
【従来の技術】
一般的に、ビルや住宅等の建物の壁面に形成される通気口には、該通気口内への雨水や異物(例えば枯れ葉等)、又は虫の侵入を防ぐことを目的としてベントフードが取付けられている。
【0003】
図11〜図13は従来のベントフードの一例を示すもので、建物の壁面1に形成された通気口2に対し挿入可能な筒状の通気口挿入部3と、この通気口挿入部3の反挿入側の端部に組み付けられて該端部の開口4に雨水が浸入しないよう包囲するフード部5とを備えて構成されている。
【0004】
そして、ここに図示している例では、フード部5の前方部分が半割りドーム状に形成されていて、該フード部5の下面には、枯れ葉等の異物の侵入を防ぐL字形断面(図11参照)のスクリーン6が一体的に形成されており、また、前記フード部5の後面には、前記通気口挿入部3の反挿入側(図11中の左側)の端部に一体的に形成されているフランジ部7が、虫の侵入を防ぐネット8を介しリベット等により組み付けられるようになっている。
【0005】
而して、斯かるベントフードをその通気口挿入部3を建物の通気口2に押し込んで設置すれば、通気口2内への雨水の侵入をフード部5により防止し且つ異物や虫の侵入をスクリーン6やネット8により防止しながら建物の内外間で良好に通気を行わせることができる。
【0006】
他方、この種のベントフードにおいては、特に防火地域に指定された場所の建物等で用いられる場合に、通気口挿入部3内に防火ダンパ9を装備したものがあり、隣室が火事になった際に、図11中に二点鎖線で示す如く、前記防火ダンパ9を閉じて通気流路10を閉塞することにより、ベントフードを通し隣室の火が天井裏へと侵入して燃え移るような事態を回避して延焼を防止するようにしてある。
【0007】
ここで、図示した防火ダンパ9の構造につき詳述すると、この防火ダンパ9は、通気口挿入部3の通気流路10を左右方向に亘る軸線Oを中心に傾動して該通気流路10の後端面を適宜に閉塞し得るようにした回転式のバタフライダンパとなっている。
【0008】
更に、通気口挿入部3の通気流路10の前方寄りの底面に装着したブラケット11と前記防火ダンパ9の下端部との間がコイルばね12(弾撥体)により接続されており、前記防火ダンパ9を通気の流れ方向に対し直角な閉塞位置に傾動するよう付勢してある。尚、防火ダンパ9は、通気口挿入部3の後端部に形成した上下のストッパ部13,14に掛止されることで閉塞位置にて固定されるようになっている。
【0009】
そして、防火ダンパ9の上端部に形成したブラケット15と、前記通気流路10底面のブラケット11とが、前記防火ダンパ9が通気の流れ方向に沿うように水平に傾動した際に近接するようになっていて、これら両ブラケット15,11に形成されている掛止爪15a,11aに対し、ヒューズ16の両端部に開けた掛止孔16a,16a(図13参照)を係合して前記ヒューズ16により両ブラケット15,11間を連結することにより、前記防火ダンパ9を通気の流れ方向に沿う開放位置に拘束し得るようにしてある。
【0010】
他方、図13に示している通り、前記ヒューズ16は、短冊状の二枚の銅板を鉛合金等の低融点合金から成る可溶体17で接合したものであり、所定温度以上で可溶体17が溶けて溶断することにより前記防火ダンパ9の拘束を解除し得るようになっている。
【0011】
尚、この種の防火ダンパを装備したベントフードに関しては、本出願人が先行して出願している下記の特許文献1にもとりあげられている。
【0012】
【特許文献1】
特開2000−314551号公報
【0013】
【発明が解決しようとする課題】
しかしながら、斯かる防火ダンパ9を装備した従来のベントフードにおいては、建物を新築したような場合の初期設置時に、現場作業者のヒューズ16の取り付け方が不完全だったり、建物の壁面への取付け時に不用意に大きな振動を与えてしまったりした場合に、万一、ヒューズ16が外れて通気流路10が防火ダンパ9により閉塞されてしまっていたとしても、それをベントフードの設置後に屋外から見て確認する術がないという懸念事項があった。
【0014】
本発明は上述の実情に鑑みてなしたもので、建物の壁面に設置されたベントフードが防火ダンパにより閉塞されていないことを屋外から目視で確認できるようにすることを目的としている。
【0015】
【課題を解決するための手段】
本発明は、建物の壁面に形成した通気口に対し挿入可能な筒状の通気口挿入部と、該通気口挿入部内に適宜に通気流路を閉塞し得るよう傾動自在に枢着された防火ダンパと、該防火ダンパを通気の流れ方向に沿うように傾動した開放位置に拘束し且つ所定温度以上となった時に溶断して前記拘束を解除するヒューズと、拘束が解除された防火ダンパを通気の流れ方向に対し直角な閉塞位置に傾動するよう付勢する弾撥体と、前記通気口挿入部の反挿入側の端部に組み付けられて該端部の開口に雨水が浸入しないよう包囲するフード部と、前記防火ダンパの拘束が解除されて該防火ダンパが閉塞位置に傾動した時に屋外から視認可能な流路閉塞表示を成す表示手段とを備えたことを特徴とするベントフード、に係るものである。
【0016】
而して、このようにすれば、ベントフードの初期設置時に何らかの事情でヒューズが外れて通気流路が防火ダンパにより閉塞されてしまっていたとしても、該防火ダンパの閉塞位置への傾動により表示手段が流路閉塞表示を成し、この流路閉塞表示を屋外から視認することが可能となるので、前記通気流路の閉塞を屋外から確認することが可能となる。
【0017】
また、本発明をより具体的に実施するにあたっては、フード部の下端に傾動自在に枢着されて建物の壁面に沿うように垂下し且つその垂下時に前記壁面側に対峙する裏面に流路閉塞表示を付したフラップと、該フラップの表面の適宜な部位と防火ダンパの閉塞位置への傾動時に通気流路の奥側へ傾動する部位との間を連結し且つ前記防火ダンパの閉塞位置への傾動時に前記フラップが略水平に引き上げられるように配索された可撓性の紐状体とにより表示手段を構成すると良い。
【0018】
このようにすれば、ベントフードの初期設置時に何らかの事情でヒューズが外れて通気流路が防火ダンパにより閉塞されてしまっていたとしても、該防火ダンパの閉塞位置への傾動により紐状体が通気流路の奥側へ引き込まれ、これによりフラップが垂下状態から略水平に引き起こされて該フラップの裏面が下方から見上げた時に視認できる状態となり、この裏面に付された流路閉塞表示により通気流路の閉塞を屋外から確認することが可能となる。
【0019】
更に、本発明においては、防火ダンパの閉塞位置への傾動時に通気流路の奥側へ傾動する部位に一端を固着し且つ他端をフード部の下端に垂下させて前記防火ダンパの閉塞位置への傾動時に通気口挿入部内に引き込まれるようにした可撓性の紐状体により表示手段を構成することも可能である。
【0020】
このようにすれば、ベントフードの初期設置時に何らかの事情でヒューズが外れて通気流路が防火ダンパにより閉塞されてしまっていたとしても、該防火ダンパの閉塞位置への傾動により紐状体が通気流路の奥側へ引き込まれ、前記紐状体がフード部の下端に垂下した状態から通気口挿入部内に引き込まれて見えなくなるので、この紐状体の他端側が見えなくなることを流路閉塞表示として視認することで通気流路の閉塞を屋外から確認することが可能となる。
【0021】
また、本発明においては、フード部の下端に傾動自在に枢着されて建物の壁面に沿うように直立し且つその直立時に前記壁面側に対峙する裏面に流路閉塞表示を付したフラップと、該フラップの表面の適宜な部位と防火ダンパの閉塞位置への傾動時に通気流路の奥側へ傾動する部位との間を連結し且つ前記防火ダンパの閉塞位置への傾動時に前記フラップが垂下した状態に引き下げられるように配索された可撓性の紐状体と、前記フラップを直立状態に保持し且つその保持を前記紐状体の引き下げにより容易に解除する保持手段とにより表示手段を構成することも可能である。
【0022】
このようにすれば、ベントフードの初期設置時に何らかの事情でヒューズが外れて通気流路が防火ダンパにより閉塞されてしまっていたとしても、該防火ダンパの閉塞位置への傾動により紐状体が通気流路の奥側へ引き込まれ、これによりフラップが起立状態から垂下した状態に引き下げられて外観的に視認し易い大きな変化をもたらし、この裏面に付された流路閉塞表示により通気流路の閉塞を屋外から確認することが可能となる。
【0023】
【発明の実施の形態】
以下本発明の実施の形態を図面を参照しつつ説明する。
【0024】
図1〜図4は本発明を実施する形態の一例を示すもので、図1は防火ダンパ9がヒューズ16により開放位置に拘束されている状態、図2はそのII−II方向の矢視、図3は防火ダンパ9の拘束が解除されて閉塞位置に傾動した状態、図4はそのIV−IV方向の矢視を夫々示したものとなっており、先の従来例の説明に用いた図11〜図13と同一の符号を付した部分は同一物を表わしている。
【0025】
本形態例においては、前述した図11〜図13のベントフードと略同様に構成したベントフード18に関し、防火ダンパ9の拘束が解除されて該防火ダンパ9が閉塞位置に傾動した時に屋外から視認可能な流路閉塞表示を成す表示手段を備えたことを特徴としている。
【0026】
より具体的には、前記表示手段として、フード部5の下端部における建物の壁面1に沿うスクリーン6の縦壁部分にブラケット19,19を介し傾動自在に枢着されて垂下し且つその垂下時に前記壁面1側に対峙する裏面に流路閉塞表示を付したフラップ20と、該フラップ20の表面の適宜な部位と防火ダンパ9の閉塞位置への傾動時に通気流路10の奥側へ傾動する部位(図示する例では上端部)との間を連結し且つ前記防火ダンパ9の閉塞位置への傾動時に前記フラップ20が略水平に引き上げられるように配索されたワイヤー等の可撓性の紐状体21とを備えている。
【0027】
ここで、前記フラップ20の表面は、フード部5の色や建物の壁面1の色に近い色で目立たないように化粧を施しておく一方、前記フラップ20の裏面には、離れた位置からでもはっきりと見て取れる鮮やかな色調で×印等を流路閉塞表示として記しておくと良い。
【0028】
尚、前記フラップ20は、その裏面に図示しない易剥離性の両面テープ等を貼着してフラップ20の下端部に固定しておき、通常時に風でひらひらと揺動してしまうような不具合が起きないようにしておくことが好ましい。
【0029】
而して、このようにすれば、ベントフード18の初期設置時に何らかの事情でヒューズ16が外れて通気流路10が防火ダンパ9により閉塞されてしまっていたとしても、図3及び図4に示す如く、防火ダンパ9の閉塞位置への傾動により紐状体21が通気流路10の奥側へ引き込まれ、これによりフラップ20が垂下状態から略水平に引き起こされて該フラップ20の裏面が下方から見上げた時に視認できる状態となり、この裏面に付された流路閉塞表示により通気流路10の閉塞を屋外から目視で確認することが可能となる。
【0030】
また、図5及び図6は本発明の別の形態例を示すもので、図5は防火ダンパ9がヒューズ16により開放位置に拘束されている状態、図6は防火ダンパ9の拘束が解除されて閉塞位置に傾動した状態を夫々示したものとなっており、本形態例においては、防火ダンパ9の閉塞位置への傾動時に通気流路10の奥側へ傾動する部位に一端を固着し且つ他端をフード部5の下端に垂下させて前記防火ダンパ9の閉塞位置への傾動時に通気口挿入部3内に引き込まれるようにした可撓性の紐状体21により表示手段を構成したものとなっている。
【0031】
而して、このようにすれば、ベントフード18の初期設置時に何らかの事情でヒューズ16が外れて通気流路10が防火ダンパ9により閉塞されてしまっていたとしても、図6に示す如く、防火ダンパ9の閉塞位置への傾動により紐状体21が通気流路10の奥側へ引き込まれ、前記紐状体21がフード部5の下端に垂下した状態から通気口挿入部3内に引き込まれて見えなくなるので、この紐状体21の他端側が見えなくなることを流路閉塞表示として視認することで通気流路10の閉塞を屋外から確認することが可能となる。
【0032】
また、図7〜図10は本発明の更に別の形態例を示すもので、図7は防火ダンパ9がヒューズ16により開放位置に拘束されている状態、図8はそのVIII−VIII方向の矢視、図9は防火ダンパ9の拘束が解除されて閉塞位置に傾動した状態、図10はそのX−X方向の矢視を夫々示したものとなっている。
【0033】
本形態例においては、表示手段として、フード部5の下端部における建物の壁面1に沿うスクリーン6の縦壁部分の最下位置にブラケット19,19を介し傾動自在に枢着されて起立し且つその起立時に前記壁面1側に対峙する裏面に流路閉塞表示を付したフラップ20と、該フラップ20の表面の適宜な部位と防火ダンパ9の閉塞位置への傾動時に通気流路10の奥側へ傾動する部位(図示する例では上端部)との間を連結し且つ前記防火ダンパ9の閉塞位置への傾動時に前記フラップ20が略水平に引き下げられるように配索されたワイヤー等の可撓性の紐状体21と、前記フラップ20を直立状態に保持し且つその保持を前記紐状体21の引き下げにより容易に解除する保持手段を成すマグネット22(両面テープ等でも可)とを備えている。
【0034】
ここで、図7及び図8に示す如く、前記紐状体21は、フラップ20の表面の連結箇所から下方向きに延びてブラケット19,19の直下で後方へ折り返し、フード部5の後面と通気口挿入部3のフランジ部7との間の隙間から通気流路10内へ引き込まれて防火ダンパ9側へ連結されるようになっている。尚、この隙間は、強風等により通気流路10内に吹き込まれてしまった雨水を排出する目的で前記通気口挿入部3のフランジ部7の最下位置に形成されているものである。
【0035】
而して、このようにすれば、ベントフード18の初期設置時に何らかの事情でヒューズ16が外れて通気流路10が防火ダンパ9により閉塞されてしまっていたとしても、図9及び図10に示す如く、防火ダンパ9の閉塞位置への傾動により紐状体21が通気流路10の奥側へ引き込まれ、これによりフラップ20が起立状態から垂下した状態に引き下げられて外観的に視認し易い大きな変化をもたらし、この裏面に付された流路閉塞表示により通気流路10の閉塞を屋外から目視で確認することが可能となる。
【0036】
尚、本発明のベントフードは、上述の形態例にのみ限定されるものではなく、防火ダンパは必ずしも水平方向の軸線を中心に傾動する回転式のバタフライダンパでなくても良く、例えば、鉛直方向の軸線を中心に傾動する回転式のバタフライダンパとしたり、一対の防火ダンパを水平方向又は鉛直方向の軸線を中心に閉じ合わせたり展開したりできるようにした見開き形式のダンパとしても良いこと、また、虫除けのネットを装備しない場合には、美観の向上を目的として紐状体をチェーン等で構成しても良いこと、更には、紐状体だけで表示手段を構成する場合に、紐状体を視認し易くさせる観点から先端側に短冊状の幅広部分を形成しても良いこと、また、表示手段としてフラップを使用する場合には、該フラップによりスクリーンのスリットが閉塞されないよう前記フラップに通気孔を形成しても良いこと、その他、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。
【0037】
【発明の効果】
上記した本発明のベントフードによれば、建物の壁面に設置されたベントフードが防火ダンパにより閉塞されていないことを、表示手段による流路閉塞表示を屋外から目視して簡単に確認することができるという優れた効果を奏し得る。
【図面の簡単な説明】
【図1】本発明を実施する形態の一例を示す断面図である。
【図2】図1のII−II方向の矢視図である。
【図3】図1の防火ダンパが閉塞位置に傾動した状態を示す断面図である。
【図4】図3のIV−IV方向の矢視図である。
【図5】本発明の別の形態例を示す断面図である。
【図6】図5の防火ダンパが閉塞位置に傾動した状態を示す断面図である。
【図7】本発明の更に別の形態例を示す断面図である。
【図8】図7のVIII−VIII方向の矢視図である。
【図9】図7の防火ダンパが閉塞位置に傾動した状態を示す断面図である。
【図10】図9のX−X方向の矢視図である。
【図11】従来のベントフードの一例を示す断面図である。
【図12】図11のXII−XII方向の矢視図である。
【図13】図11のヒューズの詳細を示す正面図である。
【符号の説明】
1 壁面
2 通気口
3 通気口挿入部
4 開口
5 フード部
9 防火ダンパ
10 通気流路
12 コイルばね(弾撥体)
16 ヒューズ
18 ベントフード
20 フラップ(表示手段)
21 紐状体(表示手段)
22 マグネット(保持手段:表示手段)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vent hood.
[0002]
[Prior art]
Generally, vent hoods are attached to vents formed on the walls of buildings such as buildings and houses in order to prevent rainwater, foreign matter (such as dead leaves) or insects from entering the vents. ing.
[0003]
FIGS. 11 to 13 show an example of a conventional vent hood. A cylindrical vent insertion portion 3 that can be inserted into a vent 2 formed on a wall surface 1 of a building, A hood portion 5 is provided that is assembled to an end portion on the side opposite to the insertion side and surrounds the opening 4 at the end portion so that rainwater does not enter.
[0004]
And in the example shown here, the front part of the hood part 5 is formed in the shape of a half dome, and an L-shaped cross section (see FIG. 11) is integrally formed, and the rear surface of the hood portion 5 is integrally formed with the end of the vent insertion portion 3 on the side opposite to the insertion side (left side in FIG. 11). The formed flange portion 7 is assembled with a rivet or the like via a net 8 that prevents insects from entering.
[0005]
Thus, if such a vent hood is installed by pushing the vent insertion portion 3 into the vent 2 of the building, the hood portion 5 prevents the rainwater from entering the vent 2, and foreign matter and insects enter. Can be ventilated between the inside and outside of the building while preventing the screen 6 and the net 8.
[0006]
On the other hand, in this type of vent hood, especially when used in a building in a place designated as a fire prevention area, there is one equipped with a fire prevention damper 9 in the vent insertion portion 3, and the adjacent room became a fire. In this case, as shown by a two-dot chain line in FIG. 11, the fire damper 9 is closed and the ventilation channel 10 is closed, so that the fire in the adjacent room enters the back of the ceiling through the vent hood and burns away. The situation is avoided to prevent the spread of fire.
[0007]
Here, the structure of the illustrated fire damper 9 will be described in detail. The fire damper 9 tilts the vent channel 10 of the vent insertion portion 3 about the axis O extending in the left-right direction, so that the vent channel 10 The rotary butterfly damper is configured so that the rear end face can be appropriately closed.
[0008]
Further, the bracket 11 attached to the bottom surface of the vent insertion portion 3 near the front of the ventilation channel 10 and the lower end portion of the fire damper 9 are connected by a coil spring 12 (elastic body), and the fire protection. The damper 9 is biased to tilt to a closed position perpendicular to the flow direction of the ventilation. The fire damper 9 is fixed at the closed position by being hooked by upper and lower stopper portions 13 and 14 formed at the rear end portion of the vent insertion portion 3.
[0009]
Then, the bracket 15 formed on the upper end of the fire damper 9 and the bracket 11 on the bottom surface of the ventilation passage 10 come close to each other when the fire damper 9 is tilted horizontally so as to follow the flow direction of the ventilation. The latching claws 15a and 11a formed on the brackets 15 and 11 are engaged with latching holes 16a and 16a (see FIG. 13) opened at both ends of the fuse 16 to thereby form the fuse. By connecting the brackets 15 and 11 by 16, the fire-proof damper 9 can be restrained to an open position along the flow direction of ventilation.
[0010]
On the other hand, as shown in FIG. 13, the fuse 16 is formed by joining two strip-shaped copper plates with a fusible body 17 made of a low melting point alloy such as a lead alloy. The restraint of the fireproof damper 9 can be released by melting and fusing.
[0011]
The vent hood equipped with this type of fire damper is also mentioned in the following Patent Document 1 filed in advance by the present applicant.
[0012]
[Patent Document 1]
JP 2000-314551 A [0013]
[Problems to be solved by the invention]
However, in the conventional vent hood equipped with such a fire-proof damper 9, the installation of the fuse 16 by the field worker is incomplete or the installation to the wall of the building at the time of initial installation when a new building is constructed. Even if a large vibration is inadvertently given, even if the fuse 16 is removed and the ventilation passage 10 is blocked by the fire-proof damper 9, it is removed from the outside after the vent hood is installed. There was a concern that there was no way to see and confirm.
[0014]
The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to visually confirm from outside that a vent hood installed on a wall surface of a building is not blocked by a fire damper.
[0015]
[Means for Solving the Problems]
The present invention relates to a cylindrical vent insertion portion that can be inserted into a vent formed on a wall surface of a building, and a fire prevention pivotally attached to the vent insertion portion so as to be able to properly close the vent flow path. A damper, a fuse that restrains the fire damper to an open position tilted along the flow direction of the ventilation, and fuses when the temperature exceeds a predetermined temperature to release the restraint, and a fire damper that has been released from the restriction are ventilated. An elastic body that urges to tilt to a closed position that is perpendicular to the flow direction of the air and an end of the vent insertion portion opposite to the insertion side are assembled so that rainwater does not enter the opening of the end. A vent hood comprising: a hood portion; and a display means for displaying a channel blockage display that is visible from outside when the restraint of the fire damper is released and the fire damper is tilted to the block position. Is.
[0016]
Thus, in this way, even if the fuse is removed for some reason during the initial installation of the vent hood and the ventilation passage is blocked by the fire damper, the fire damper is displayed by tilting to the closed position. Since the means displays the channel blockage display, and this channel blockage display can be visually recognized from the outside, the blockage of the ventilation channel can be confirmed from the outside.
[0017]
Further, in carrying out the present invention more specifically, the flow path is blocked on the back surface that is pivotally attached to the lower end of the hood portion and hangs down along the wall surface of the building and faces the wall surface side when the hang down. Connecting the flap with the indication to an appropriate portion of the surface of the flap and a portion tilting to the back side of the ventilation passage when the fire damper is tilted to the closed position, and to the closed position of the fire damper The display means may be constituted by a flexible string that is arranged so that the flap is pulled up substantially horizontally during tilting.
[0018]
In this way, even if the fuse is removed for some reason during the initial installation of the vent hood and the ventilation flow path is blocked by the fire damper, the string-like body is passed by the tilting of the fire damper to the closed position. It is drawn into the back side of the air flow path, so that the flap is raised almost horizontally from the suspended state and becomes visible when the back surface of the flap is looked up from below. It becomes possible to confirm the blockage of the road from outside.
[0019]
Further, in the present invention, one end is fixed to a portion that tilts to the back side of the ventilation flow path when the fire damper is tilted to the closed position, and the other end is suspended from the lower end of the hood portion to reach the fire damper's closed position. It is also possible to configure the display means by a flexible string-like body that is drawn into the ventilation hole insertion portion during the tilting.
[0020]
In this way, even if the fuse is removed for some reason during the initial installation of the vent hood and the ventilation flow path is blocked by the fire damper, the string-like body is passed by the tilting of the fire damper to the closed position. It is drawn into the back side of the air flow path, and the string-like body is drawn into the ventilation hole insertion portion from the state where it is hung from the lower end of the hood part, so that the other end side of this string-like body cannot be seen. By visually recognizing it as a display, it is possible to check the blockage of the ventilation channel from the outside.
[0021]
Further, in the present invention, a flap that is pivotally attached to the lower end of the hood part so as to be tiltable and upright along the wall surface of the building, and a flow path closing display is attached to the back surface facing the wall surface side when standing upright, An appropriate part of the surface of the flap is connected to a part that tilts to the back side of the ventilation passage when the fire damper is tilted to the closed position, and the flap is suspended when the fire damper is tilted to the closed position. A display means is constituted by a flexible string-like body arranged so as to be lowered to a state, and a holding means for holding the flap in an upright state and easily releasing the holding by lowering the string-like body It is also possible to do.
[0022]
In this way, even if the fuse is removed for some reason during the initial installation of the vent hood and the ventilation flow path is blocked by the fire damper, the string-like body is passed by the tilting of the fire damper to the closed position. It is drawn into the back side of the air flow path, and this causes the flap to be lowered from the standing state to the suspended state, resulting in a large change that can be visually recognized. Can be confirmed from outside.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0024]
1 to 4 show an example of an embodiment for carrying out the present invention. FIG. 1 shows a state in which the fire damper 9 is constrained to an open position by a fuse 16, and FIG. 2 shows an arrow view in the II-II direction. FIG. 3 shows a state in which the fire damper 9 is released from being restrained and tilted to the closed position, and FIG. 4 shows the arrows in the IV-IV direction, respectively. The parts denoted by the same reference numerals as in FIGS. 11 to 13 represent the same items.
[0025]
In this embodiment, regarding the vent hood 18 configured substantially the same as the vent hood of FIGS. 11 to 13 described above, when the fire damper 9 is released and the fire damper 9 is tilted to the closed position, it is visible from the outside. It is characterized by having a display means for displaying a possible flow path blockage.
[0026]
More specifically, as the display means, it is pivotally attached to the vertical wall portion of the screen 6 along the wall surface 1 of the building at the lower end portion of the hood portion 5 via the brackets 19 and 19 so as to be freely tilted, and at the time of the drooping. A flap 20 with a flow path blocking display on the back surface facing the wall surface 1 side, and an appropriate portion of the surface of the flap 20 and the fire damper 9 tilt to the back side of the ventilation flow path 10 when tilted to the closed position. A flexible string such as a wire that is connected to a portion (the upper end portion in the illustrated example) and wired so that the flap 20 is pulled up substantially horizontally when the fire damper 9 is tilted to the closed position. The body 21 is provided.
[0027]
Here, the surface of the flap 20 is decorated so as not to be conspicuous with the color of the hood portion 5 or the color of the wall surface 1 of the building, while the back surface of the flap 20 is placed even from a remote position. It is advisable to write a cross mark or the like in the vivid color tone that can be clearly seen.
[0028]
Note that the flap 20 has a problem such that an easily peelable double-sided tape or the like (not shown) is attached to the back surface of the flap 20 and fixed to the lower end portion of the flap 20 so that the flap 20 swings in the wind in normal times. It is preferable not to get up.
[0029]
Thus, in this way, even if the fuse 16 is removed for some reason when the vent hood 18 is initially installed and the ventilation passage 10 is blocked by the fire damper 9, it is shown in FIGS. As described above, the string-like body 21 is drawn to the back side of the ventilation flow path 10 by the tilting of the fire damper 9 to the closed position, thereby causing the flap 20 to be raised substantially horizontally from the suspended state, and the back surface of the flap 20 from below. When it looks up, it will be in a visible state, and it becomes possible to visually confirm the blockage of the ventilation channel 10 from the outside by the channel blockage display attached to the back surface.
[0030]
5 and 6 show another embodiment of the present invention. FIG. 5 shows a state where the fire damper 9 is restrained to the open position by the fuse 16, and FIG. 6 shows that the restraint of the fire damper 9 is released. In this embodiment, one end is fixed to a portion of the fire damper 9 that is tilted to the back side when the fire damper 9 is tilted to the closed position, and A display means is constituted by a flexible string-like body 21 whose other end is suspended from the lower end of the hood portion 5 so as to be drawn into the vent insertion portion 3 when the fire damper 9 is tilted to the closed position. It has become.
[0031]
Thus, in this way, even if the fuse 16 is removed for some reason during the initial installation of the vent hood 18 and the ventilation passage 10 is closed by the fire damper 9, as shown in FIG. When the damper 9 is tilted to the closed position, the string-like body 21 is drawn into the back side of the ventilation channel 10, and the string-like body 21 is drawn into the vent hole insertion portion 3 from the state where it is suspended from the lower end of the hood portion 5. Therefore, it is possible to confirm the blockage of the ventilation channel 10 from the outside by visually confirming that the other end side of the string 21 is not visible as a channel blockage display.
[0032]
7 to 10 show still another embodiment of the present invention. FIG. 7 shows a state in which the fireproof damper 9 is constrained to the open position by the fuse 16, and FIG. 8 shows an arrow in the VIII-VIII direction. FIG. 9 shows a state in which the restraint of the fire damper 9 has been released and the fire damper 9 has tilted to the closed position, and FIG. 10 shows an arrow view in the XX direction.
[0033]
In the present embodiment, as the display means, the lower end portion of the hood portion 5 is pivotally attached to the lowermost position of the vertical wall portion of the screen 6 along the wall surface 1 of the building via the brackets 19 and 19 and stands upright. A flap 20 with a flow path closing indication on the back surface facing the wall surface 1 side when standing up, and an appropriate part of the surface of the flap 20 and the rear side of the ventilation flow path 10 when the fire damper 9 is tilted to the closed position A flexible wire such as a wire that is connected to a portion (upper end in the example shown in the figure) and that is routed so that the flap 20 is pulled down substantially horizontally when the fire damper 9 is tilted to the closed position. And a magnet 22 (which may be a double-sided tape or the like) constituting holding means for holding the flap 20 in an upright state and easily releasing the holding by pulling down the string-like body 21. There.
[0034]
Here, as shown in FIGS. 7 and 8, the string-like body 21 extends downward from the connecting portion of the surface of the flap 20, and is folded back immediately below the brackets 19, 19 to vent the rear surface of the hood portion 5. It is drawn into the ventilation flow path 10 from the gap between the flange portion 7 of the mouth insertion portion 3 and connected to the fire damper 9 side. This gap is formed at the lowest position of the flange portion 7 of the vent hole insertion portion 3 for the purpose of discharging rainwater that has been blown into the vent flow channel 10 by strong wind or the like.
[0035]
Thus, in this way, even if the fuse 16 is removed for some reason at the initial installation of the vent hood 18 and the ventilation passage 10 is blocked by the fire damper 9, it is shown in FIG. 9 and FIG. As described above, the string-like body 21 is drawn to the back side of the ventilation passage 10 by the tilting of the fire damper 9 to the closed position, and the flap 20 is lowered from the standing state to the suspended state, so that it is easy to visually recognize the appearance. A change is brought about, and the blockage of the ventilation channel 10 can be visually confirmed from the outside by the channel blockage display attached to the back surface.
[0036]
The vent hood of the present invention is not limited to the above-described embodiment, and the fireproof damper does not necessarily have to be a rotary butterfly damper that tilts about a horizontal axis, for example, in the vertical direction. It may be a rotary butterfly damper that tilts about the axis of the above, or it may be a spread type damper that allows a pair of fire-proof dampers to be closed or unfolded around a horizontal or vertical axis. When the net for insect repellent is not provided, the string may be configured with a chain or the like for the purpose of improving aesthetics. Furthermore, when the display means is configured only with the string, the string From the viewpoint of making it easier to visually recognize, a wide strip-like portion may be formed on the front end side, and when a flap is used as a display means, the flap of the screen is used by the flap. The Tsu bets may form a vent hole in the flap so as not to be closed, the other, can of course be modified in various ways without departing from the gist of the present invention.
[0037]
【The invention's effect】
According to the vent hood of the present invention described above, it is possible to easily confirm that the vent hood installed on the wall surface of the building is not blocked by the fire-proof damper by visually observing the channel blockage display by the display means from the outside. An excellent effect of being able to do so can be achieved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of an embodiment of the present invention.
FIG. 2 is a view taken in the direction of arrows II-II in FIG.
FIG. 3 is a cross-sectional view showing a state in which the fire damper shown in FIG. 1 is tilted to the closed position.
4 is a view taken in the direction of arrows IV-IV in FIG. 3;
FIG. 5 is a cross-sectional view showing another embodiment of the present invention.
6 is a cross-sectional view showing a state in which the fire damper shown in FIG. 5 is tilted to the closed position.
FIG. 7 is a cross-sectional view showing still another embodiment of the present invention.
8 is a view taken in the direction of arrows VIII-VIII in FIG.
9 is a cross-sectional view showing a state in which the fire damper shown in FIG. 7 is tilted to the closed position.
10 is a view taken in the direction of arrows XX in FIG.
FIG. 11 is a cross-sectional view showing an example of a conventional vent hood.
12 is an arrow view in the XII-XII direction of FIG.
13 is a front view showing details of the fuse of FIG. 11. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wall surface 2 Ventilation hole 3 Ventilation hole insertion part 4 Opening 5 Hood part 9 Fire prevention damper 10 Ventilation flow path 12 Coil spring (elastic body)
16 Fuse 18 Bent hood 20 Flap (display means)
21 String (display means)
22 Magnet (holding means: display means)

Claims (4)

建物の壁面に形成した通気口に対し挿入可能な筒状の通気口挿入部と、該通気口挿入部内に適宜に通気流路を閉塞し得るよう傾動自在に枢着された防火ダンパと、該防火ダンパを通気の流れ方向に沿うように傾動した開放位置に拘束し且つ所定温度以上となった時に溶断して前記拘束を解除するヒューズと、拘束が解除された防火ダンパを通気の流れ方向に対し直角な閉塞位置に傾動するよう付勢する弾撥体と、前記通気口挿入部の反挿入側の端部に組み付けられて該端部の開口に雨水が浸入しないよう包囲するフード部と、前記防火ダンパの拘束が解除されて該防火ダンパが閉塞位置に傾動した時に屋外から視認可能な流路閉塞表示を成す表示手段とを備えたことを特徴とするベントフード。A cylindrical vent insertion portion that can be inserted into a vent formed on the wall surface of the building, a fire-resistant damper pivotally attached to the vent insertion portion so as to be able to properly close the vent flow path, The fire damper is constrained to an open position that is tilted along the flow direction of the ventilation, and when the temperature exceeds a predetermined temperature, the fuse that blows and releases the restraint, and the fire protection damper that is released from the restraint in the flow direction of the ventilation An elastic body that urges to tilt to a right-closed closed position, and a hood portion that is assembled to an end of the vent insertion portion on the side opposite to the insertion side so as to prevent rainwater from entering the opening of the end portion; A vent hood comprising: a display means for displaying a flow path blockage visible from the outside when the fire damper is released and the fire damper is tilted to the closed position. フード部の下端に傾動自在に枢着されて建物の壁面に沿うように垂下し且つその垂下時に前記壁面側に対峙する裏面に流路閉塞表示を付したフラップと、該フラップの表面の適宜な部位と防火ダンパの閉塞位置への傾動時に通気流路の奥側へ傾動する部位との間を連結し且つ前記防火ダンパの閉塞位置への傾動時に前記フラップが略水平に引き上げられるように配索された可撓性の紐状体とにより表示手段を構成したことを特徴とする請求項1に記載のベントフード。A flap pivotally attached to the lower end of the hood section so as to hang along the wall surface of the building, and a flow path blocking display is attached to the back surface facing the wall surface when the hang is suspended, and an appropriate surface on the surface of the flap A portion is connected to a portion that tilts to the back side of the ventilation passage when the fire damper is tilted to the closed position, and the flap is pulled up substantially horizontally when the fire damper is tilted to the closed position. 2. A vent hood according to claim 1, wherein said flexible string-like body constitutes a display means. 防火ダンパの閉塞位置への傾動時に通気流路の奥側へ傾動する部位に一端を固着し且つ他端をフード部の下端に垂下させて前記防火ダンパの閉塞位置への傾動時に通気口挿入部内に引き込まれるようにした可撓性の紐状体により表示手段を構成したことを特徴とする請求項1に記載のベントフード。When the fire damper is tilted to the closed position, one end is fixed to the part that tilts to the back side of the ventilation flow path, and the other end is suspended from the lower end of the hood part, and the fire damper is inside the vent insertion section when tilted to the closed position. 2. The vent hood according to claim 1, wherein the display means is constituted by a flexible string-like body that is drawn into the hood. フード部の下端に傾動自在に枢着されて建物の壁面に沿うように直立し且つその直立時に前記壁面側に対峙する裏面に流路閉塞表示を付したフラップと、該フラップの表面の適宜な部位と防火ダンパの閉塞位置への傾動時に通気流路の奥側へ傾動する部位との間を連結し且つ前記防火ダンパの閉塞位置への傾動時に前記フラップが垂下した状態に引き下げられるように配索された可撓性の紐状体と、前記フラップを直立状態に保持し且つその保持を前記紐状体の引き下げにより容易に解除する保持手段とにより表示手段を構成したことを特徴とする請求項1に記載のベントフード。A flap pivotally attached to the lower end of the hood portion so as to be upright along the wall surface of the building and having a channel blockage display on the back surface facing the wall surface at the time of the upright, and an appropriate surface of the flap And a portion that tilts to the back side of the ventilation passage when the fire damper is tilted to the closed position, and is arranged so that the flap is pulled down when the fire damper is tilted to the closed position. The display means is configured by a flexible string-like body that has been sought and a holding means that holds the flap in an upright state and easily releases the holding by pulling down the string-like body. Item 1. The vent hood according to Item 1.
JP2003176213A 2003-06-20 2003-06-20 Bent food Expired - Lifetime JP4133618B2 (en)

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KR20130018026A (en) * 2011-08-12 2013-02-20 엘지디스플레이 주식회사 Fire damper
KR20200030200A (en) * 2018-09-12 2020-03-20 오텍캐리어 주식회사 Air Conditioner with Ventilation Function

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KR101544347B1 (en) * 2014-03-24 2015-08-17 (주)윤성지앤티 Apparatus for discharging and shutting off overpressure
KR101559862B1 (en) * 2014-11-07 2015-10-13 김수엽 Fire damper and fire damper operating method

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Publication number Priority date Publication date Assignee Title
KR20130018026A (en) * 2011-08-12 2013-02-20 엘지디스플레이 주식회사 Fire damper
KR101878494B1 (en) * 2011-08-12 2018-07-16 엘지디스플레이 주식회사 Fire damper
KR20200030200A (en) * 2018-09-12 2020-03-20 오텍캐리어 주식회사 Air Conditioner with Ventilation Function
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