JP2004232294A

JP2004232294A - Fireproof window structure

Info

Publication number: JP2004232294A
Application number: JP2003020953A
Authority: JP
Inventors: Izumi Suematsu; 泉末松
Original assignee: HEILEN HAUS KK
Current assignee: HEILEN HAUS KK
Priority date: 2003-01-29
Filing date: 2003-01-29
Publication date: 2004-08-19

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fireproof window for improving a fireproof function by surely performing heat blockage on the periphery of fireproof window glass by completely blocking flames at the fireproof window glass by providing a plurality of followings of heat blockage functions to the flames at the fireproof window glass. <P>SOLUTION: The fireproof window is constituted so as to check the propagation of the flame to the indoor side from the outdoor side by juxtaposing outside glass facing the outdoor side and inside glass facing the indoor side on the inner periphery of a frame body, and has a fireproof glass body constituted so that the inside glass is composed of multiple glass composed of heat resisting glass, and a heat insulating gas layer is formed between the outside glass and the inside glass, and the inside glass is characterized by arranging a heat insulating layer between a plurality of sheets of glass. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、枠体の内周に外側ガラスと内側ガラスとを並設し、屋外側から屋内側への火炎の伝播を阻止するように構成された防火窓の構造に関する。
【０００２】
【従来の技術】
屋外側から屋内側への火炎の伝播を阻止するように構成された防火窓は、通常、外側ガラスと内側ガラスとを両ガラス間に空間を形成して配置した２重ガラス構造が多く用いられており、特許文献１（登録実用新案第３０７６０６１号公報）においても従来技術として紹介されている。
【０００３】
また前記特許文献１においては、前記２重ガラス構造よりも構造を簡単化し、特にガラスの外周部における火炎伝播を阻止する技術として、厚肉の単重構造の防火窓ガラスと、該防火窓ガラスの外端部に周設されるセラミック材を素材とし防水、防湿、耐熱性をそなえた充填材と、前記防火窓ガラスを表裏両側から挟み付ける状態で設けられた内枠及び外枠とを有する主として船舶用の防火窓が開示されている。
【０００４】
【特許文献１】
登録実用新案第３０７６０６１号公報
【０００５】
【発明が解決しようとする課題】
しかしながら、外側ガラスと内側ガラスとを両ガラス間に空間を形成して配置した２重ガラス構造にあっては、単に内、外２枚のガラス間に断熱空間を設置したのみであるので、屋外からの火炎に対する熱遮断が十分でなく、火炎によって外側のガラスが破損した場合には、前記断熱空間が機能しなくなって内側のガラスが破損し易くなり、防火窓としての機能をなさなくなる。
【０００６】
また、特許文献１に開示されている技術にあっては、防火窓ガラスの周囲に防水、防湿、耐熱性をそなえた充填材を設けることにより、防火窓ガラス周囲の隙間の形成を回避して、該防火窓ガラス周囲を通る火炎の伝播を完全に阻止しているが、防火窓ガラスが単一構造であるため、屋外からの火炎に対する熱遮断を防火窓ガラス１枚で行うこととなり、防火窓ガラスが厚肉であっても、火炎に対する熱遮断が十分でなく、火炎により防火窓ガラスが破損すると防火機能を完全に喪失する、
等の問題点を有している。
【０００７】
本発明はかかる従来技術の課題に鑑み、防火窓ガラス部における火炎に対して複数次の熱遮断機能を備えることにより、該防火窓ガラス部における火炎の遮断を完全になし得、かつ防火窓ガラス部の周囲における熱シールを確実になすことにより、防火機能を向上した防火窓を提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明はかかる目的を達成するもので、枠体の内周に、屋外側に臨む外側ガラスと屋内側に臨む内側ガラスとを並設し、屋外側から屋内側への火炎の伝播を阻止するように構成された防火窓において、前記内側ガラスを耐熱ガラスからなる多重ガラスにて構成するとともに、前記外側ガラスと内側ガラスとの間に断熱気体層を形成して構成された防火ガラス体を備え、前記内側ガラスは、複数枚のガラスの間に断熱層を設けてなることを特徴とする。
【０００９】
かかる発明において好ましくは、前記内側ガラスは、次の２つの形態で構成するのがよい。
第１の形態は、前記内側ガラスは、単一ガラスを複数枚備えて、各単一ガラスの間に前記断熱層を設けてなる。
第２の形態は、前記内側ガラスを構成する複数枚のガラスの夫々は、２重ガラスの間にフィルムを挟着してなる２重ガラス体に構成され、各２重ガラス体の間に断熱層を設けてなる。
【００１０】
また、かかる発明において好ましくは、前記枠体を、建屋等の構造物に固着された外枠材と該外枠材の内周に流体シール用のシール材を介して装着された框材とにより構成し、該框材の内周に前記加熱シール材を介して前記防火ガラス体を装着してなるのがよい。
そして好ましくは、前記外枠材と框材との間のシール材を、該シール材近傍の温度によって体積が変化する加熱シール材にて構成するのがよい。また該加熱シール材は、温度上昇によって体積が増大する炭素系発泡材で構成するのがよい。
【００１１】
また、かかる発明において好ましくは、前記枠体の、前記防火ガラス体の外周下部に対向する下部内周面を外側に傾斜した傾斜面に構成し、前記防火ガラス体の外側面と該下部内周面との間に流体の通過を遮断する水切部材を設置するのがよい。
【００１２】
また、かかる発明において好ましくは、前記枠体の、前記防火ガラス体の外周に対向する内周面を防火ガラス体の表面に直角な水平面に構成し、前記防火ガラス体の外側面と該内周面との間に流体シール用のシール部材を設置するのがよい。
【００１３】
かかる発明によれば、外側ガラスと内側ガラスとの間に断熱気体層を形成し、さらに該内側ガラスを複数枚の耐熱ガラスの間に断熱層を形成した構造としたので、屋外からの火炎が外側ガラスに到達した際においても、前記外側ガラス及び該外側ガラスと内側ガラスとの間の断熱気体層で第１次の熱遮断を行って内側ガラスに伝達される熱量を減少せしめ、さらに内側ガラスを構成する複数枚の耐熱ガラスと該耐熱ガラス間に形成された断熱層により第２次の熱遮断を行って、該内側ガラスを通過して屋内に伝達される熱量を抑制する。これにより、前記火炎からの熱が屋内に伝達されるのが抑制される。
【００１４】
また、内側ガラスが、複数枚の耐熱ガラスの間に断熱層を形成した構造をなっているので、屋外からの火炎により外側ガラスが破損しても、内側ガラスの最外側の耐熱ガラスが火炎を受け止めてから、該耐熱ガラス及び該耐熱ガラス間に形成された断熱層により熱遮断を行って内側の耐熱ガラスに伝達される熱量を抑制することにより、該内側の耐熱ガラスの温度は強度面での許容レベルまで低下せしめられて破損が回避され、これによって前記火炎からの熱が屋内に伝達されるのを抑制できる。
また、内側ガラスを構成する複数枚の耐熱ガラスは強化合せガラスで構成できるので、破壊され難く、防犯性を備えており、かつ従来の網入りガラスに比べて美観が良好となる。
【００１５】
殊に、前記内側ガラスを構成する複数枚のガラスの夫々を、２重ガラスの間にフィルムを挟着してなる２重ガラス体に構成して、各２重ガラス体の間に前記断熱層を設ける構造とすれば、内側ガラス内において２重ガラス体及び該２重ガラス体のガラス間に挟着されたフィルムと各２重ガラス体の間に形成される断熱層とによって２次に亘る熱遮断を行うことができるので、屋内側への遮熱効果がさらに向上する。
【００１６】
従って、かかる発明によれば、屋外からの火炎による熱を、外側ガラス及び該外側ガラスと内側ガラスとの間の断熱気体層による第１次の熱遮断と、内側ガラスにおける複数枚の耐熱ガラス及び該耐熱ガラスの間に形成された断熱層による第２次の熱遮断とにより、屋内側への伝達熱量を大幅に減少できるとともに、内側ガラスを構成する複数枚の耐熱ガラスにより外側ガラス及び断熱気体層を経た残存熱量を受け止めるので、前記火炎からの熱による内側ガラスの破損を確実に回避したうえで、前記火炎からの熱が屋内に伝達されるのを抑制した、確実な防火をなすことができる。
【００１７】
また、かかる発明において好ましくは、前記防火ガラス体の外周と前記枠体の内周との間に、該防火ガラス体近傍の温度によって体積が変化する加熱シール材を設置してなる。
前記加熱シール材は、温度上昇によって体積が増大する炭素系発泡材で構成するのがよい。
【００１８】
このように構成すれば、屋外側からの火炎により防火ガラス体近傍の温度が上昇すると、防火ガラス体の外周と前記枠体の内周との間に設置された好ましくは炭素系発泡材からなる加熱シール材が温度上昇によって約２０倍程度の体積に膨張することにより、該防火ガラス体の外周と前記枠体の内周との間の隙間を完全に封鎖し、火炎が該隙間を通して屋内側に伝達されるのを確実に回避できる。
【００１９】
また、かかる発明において好ましくは、前記枠体を木材で構成し、前記防火ガラス体の内面及び外面と前記枠体との間に流体シール用の気密材を介装する。
このように構成すれば、木材からなる枠体は通常使用時における美観が良好であるとともに、結露の発生が回避され、また火炎を受けて高温化すると炭化してそれ以上の燃焼が阻止されることにより、屋内側への火炎の伝播が回避される。
【００２０】
【発明の実施の形態】
以下、本発明を図に示した実施例を用いて詳細に説明する。但し、この実施例に記載される構成部品の寸法、形状、その相対配置などは特に特定的な記載がない限り、この発明の範囲をそれのみに限定する趣旨ではなく単なる説明例に過ぎない。
【００２１】
図１は本発明の第１実施例に係る防火窓の構造を示す断面図、図２は前記防火窓の第２実施例を示す図１対応図である。図３は内側ガラスの第１例を示す図１及び図２のＺ部詳細図、図４は内側ガラスの第２例を示す図１及び図２のＺ部詳細図である。
【００２２】
本発明の第１実施例に係る防火窓の構造を示す図１において、０１は防火ガラス体で、次のように構成されている。
２は屋外１００側に臨み、遮熱性を備えかつ、赤外線を防止した単層ガラスからなる外側ガラス、１は屋内２００側に臨む多重ガラス（詳細は後述）からなる内側ガラスで、該外側ガラス２と内側ガラス１とは、空気層等の気体層からなる断熱空間３を挟んで設置されている。７は前記断熱空間３の外周部の全周に亘って設けられたスペーサで、該スペーサ７によって前記断熱空間３は外部と流体密となっている。
【００２３】
４は木材からなる中抜き四角形状の外枠材で、外周を建屋等の構造物に固着されている。５は木材からなる中抜き四角形状の框材で、前記外枠材の内周にパッキン１８を介して取付けられている。
９は加熱膨張材で、前記外枠材４の内周と框材５の外周との間の空間１６に臨んで前記外枠材４に装着されている。該加熱膨張材９は、これの温度上昇によって体積が増大する物質であればよく、この実施例では炭素系発泡材で構成されている。
【００２４】
１２は押付材、８は対をなして設けられた気密材で、該気密材８の一方は前記外側ガラス２の屋外１００側外周部と前記押付材１２の内側面との間に挟持され、他方は内側ガラス１の屋内２００側外周部と前記框材５との間に挟持されており、前記防火ガラス体０１は、前記押付材１２の押付力によって該気密材８を介して該框材５と押付材１２との間に挟持されることとなる。
前記框材５は、前記防火ガラス体０１の外周下部に対向する下部内周面５ａを屋外１００側に傾斜した傾斜面に構成し、該下部内周面５ａの出口側には水切部材１１が設置されて前記下部内周面５ａ側への水の侵入を遮断している。１３は前記下部内周面５ａを含む框材５の内周面に沿って貼着された薄板からなるステンレス板である。
【００２５】
６は加熱膨張材で、前記框材５の内周と防火ガラス体０１の外周との間の空間１０に臨んで前記框材５に装着されている。該加熱膨張材６は前記加熱膨張材９と同様に、これの温度上昇によって体積が増大する物質であればよく、この実施例では炭素系発泡材で構成されている。
１５は前記框材５の屋内２００側端面に取付けられた操作用のハンドルである。
【００２６】
前記内側ガラス１は、図３の第１例、あるいは図４の第２例の何れを用いてもよい。
前記内側ガラス１の第１例を示す図３において、１ａ、１ｂは該内側ガラスにおける２枚の強化合せガラスで構成された耐熱ガラスからなる２重ガラスで、該２重ガラスは２枚のガラスの間に極薄不燃性のフィルム１ｃを挟着している。１ｄは前記２重ガラス１ａ、１ｂ間に設置された断熱層で、耐熱性を有する透明な材料、好ましくは透明ケイ酸ソーダ、あるいは空気層からなる。１ｅは前記断熱層１ｄの外周に沿って設けられたシール材である。１ｆは支持部材で、前記２重ガラス１ａ、１ｂ、断熱層１ｄ及びシール材１ｅの外周を全周に亘って固定、保持している。
前記２重ガラス１ａ、１ｂと断熱層１ｄとは、２組以上組み合わせてもよい。
【００２７】
前記内側ガラス１の第２例を示す図４において、１ｇ、１ｈは該内側ガラスを構成する耐熱強化ガラスからなる単一ガラスである。１ｄは前記単一ガラス１ｇ、１ｈ間に設置された断熱層で、前記第１例と同様に、耐熱性を有する透明な固体材料あるいは空気層からなる。１ｅは、断熱層１ｄの外周に沿って設けられたシール材である。１ｆは支持部材で、前記単一ガラス１ｇ、１ｈ、断熱層１ｄ及びシール材１ｅの外周を全周に亘って固定、保持している。
前記単一ガラス１ｇ、１ｈと断熱層１ｄとは、２組以上組み合わせてもよい。
【００２８】
かかる構成からなる防火窓において、屋外１００からの火炎が外側ガラス２に到達した際においては、該外側ガラス２と内側ガラス１との間に断熱空間３を形成し、さらに該内側ガラス１を耐熱ガラスからなる２重ガラス１ａ、１ｂあるいは単一ガラス１ｇ、１ｈの間に断熱層１ｄを形成した構造となっているため、前記外側ガラス２及び該外側ガラス２と内側ガラス１との間の断熱空間３で第１次の熱遮断を行うことにより、内側ガラス１に伝達される熱量が減少せしめられる。
【００２９】
さらに前記内側ガラス１を構成する複数枚の耐熱ガラスからなる２重ガラス１ａ、１ｂあるいは単一ガラス１ｇ、１ｈと該耐熱ガラス間に形成された断熱層１ｄとにより第２次の熱遮断を行うことにより、該内側ガラス１を通過して屋内２００に伝達される熱量を抑制する。これにより、前記火炎からの熱が屋内２００に伝達されるのが抑制される。
【００３０】
また、前記内側ガラス１が、複数枚の耐熱ガラスからなる２重ガラス１ａ、１ｂあるいは単一ガラス１ｇ、１ｈの間に断熱層１ｄを形成した構造となっているため、屋外１００からの火炎により外側ガラス２が破損しても、内側ガラス１の最外側の耐熱ガラスからなる２重ガラス１ｂあるいは単一ガラス１ｈが火炎を受け止めてから、該耐熱ガラスからなる２重ガラス１ａ、１ｂあるいは単一ガラス１ｇ、１ｈ及び該耐熱ガラス間に形成された断熱層１ｄにより熱遮断を行って、内側の耐熱ガラスからなる２重ガラス１ａあるいは単一ガラス１ｇに伝達される熱量を抑制する。
これにより、該内側の耐熱ガラスからなる２重ガラス１ａあるいは単一ガラス１ｇの温度は、強度面での許容レベルまで低下せしめられて破損が回避され、前記火炎からの熱が屋内２００に伝達されるのが抑制される。
【００３１】
また、前記屋外１００側からの火炎により、前記防火ガラス体０１近傍の温度が上昇すると、該防火ガラス体０１の外周と前記框材５の内周との間に設置された炭素系発泡材からなる加熱膨張材６が、温度上昇によって約２０倍程度の体積に膨張する。
かかる加熱膨張材６の体積膨張により、該防火ガラス体０１の外周と前記框材５の内周との間の空間１０を完全に封鎖し、火炎が該空間１０を通して屋内２００側に伝達されるのを阻止する。
【００３２】
また、前記屋外１００側からの火炎により、前記外枠材４と框材５との間の空間１７の温度が上昇すると、該外枠材４と框材５との間に設置された炭素系発泡材からなる加熱膨張材９が、温度上昇によって約２０倍程度の体積に膨張し、かかる加熱膨張材９の体積膨張により、前記外枠材４と框材５との間の空間１７を完全に封鎖し、火炎が該空間１７を通して屋内２００側に伝達されるのを阻止する。
【００３３】
図２に示す前記防火窓の第２実施例においては、前記框材５の前記防火ガラス体０１の外周に対向する内周面５ａを防火ガラス体０１の表面に直角な水平面に構成し、前記第１実施例における水切部材１１を廃止して前記押付材１２を水切材に兼用している。
その他の構成は前記第１実施例と同様であり、これと同一の部材は同一の符号で示す。尚、内側ガラス１は、図３の第１例、あるいは図４の第２例の何れを用いてもよい。
【００３４】
【発明の効果】
以上記載のように本発明によれば、屋外からの火炎による熱を、外側ガラス及び該外側ガラスと内側ガラスとの間の断熱気体層による第１次の熱遮断と、内側ガラスにおける複数枚の耐熱ガラス及び該耐熱ガラスの間に形成された断熱層による第２次の熱遮断とにより、屋内側への伝達熱量を大幅に減少できるとともに、内側ガラスを構成する複数枚の耐熱ガラスにより外側ガラス及び断熱気体層を経た残存熱量を受け止めるので、前記火炎からの熱による内側ガラスの破損を確実に回避したうえで、前記火炎からの熱が屋内に伝達されるのを抑制した、確実な防火をなすことができる。
【００３５】
また、本発明によれば、屋外側からの火炎により防火ガラス体近傍の温度が上昇すると、防火ガラス体の外周と前記枠体の内周との間に設置された好ましくは炭素系発泡材からなる加熱シール材が温度上昇によって約２０倍程度の体積に膨張することにより、該防火ガラス体の外周と前記枠体の内周との間の隙間を完全に封鎖し、火炎が該隙間を通して屋内側に伝達されるのを確実に回避できる。
【図面の簡単な説明】
【図１】本発明の第１実施例に係る防火窓の構造を示す断面図である。
【図２】前記防火窓の第２実施例を示す図１対応図である。
【図３】内側ガラスの第１例を示す図１及び図２のＺ部詳細図である。
【図４】内側ガラスの第２例を示す図１及び図２のＺ部詳細図である。
【符号の説明】
０１防火ガラス体
１内側ガラス
１ａ、１ｂ２重ガラス
１ｃフィルム
１ｄ断熱層
１ｇ、１ｈ単一ガラス
２外側ガラス
３断熱空間
４外枠材
５框材
５ａ下部内周面
６、９加熱膨張材
７スペーサ
８気密材
１０、１７空間
１１水切部材
１２押付材
１８パッキン
１００屋外
２００屋内[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a structure of a fire prevention window in which an outer glass and an inner glass are juxtaposed on an inner periphery of a frame to prevent propagation of a flame from an outdoor side to an indoor side.
[0002]
[Prior art]
A fire prevention window configured to prevent the propagation of a flame from the outdoor side to the indoor side usually has a double glass structure in which an outer glass and an inner glass are formed so as to form a space between the two glasses. Patent Document 1 (registered utility model No. 3076061) also introduces it as a conventional technique.
[0003]
In Patent Document 1, as a technique for simplifying the structure as compared with the double glass structure, and particularly for preventing a flame from propagating in the outer peripheral portion of the glass, a fire prevention window glass having a thick single-layer structure, It has a waterproof, moisture-proof, heat-resistant filler made of a ceramic material provided around the outer end portion thereof, and an inner frame and an outer frame provided so as to sandwich the fireproof window glass from both sides. Fire protection windows are mainly disclosed for ships.
[0004]
[Patent Document 1]
Registered Utility Model No. 3076061
[Problems to be solved by the invention]
However, in the double glass structure in which the outer glass and the inner glass are arranged so as to form a space between the two glasses, the heat insulation space is simply provided between the inner and outer two glasses. If the outer glass is broken by the flame due to insufficient heat insulation from the flame, the heat insulating space does not function and the inner glass is liable to be broken, thereby failing to function as a fire prevention window.
[0006]
Further, in the technology disclosed in Patent Literature 1, by providing a filler having waterproof, moisture-proof, and heat resistance around the fire prevention window glass, formation of a gap around the fire prevention window glass is avoided. However, although the propagation of the flame passing around the fire prevention window glass is completely prevented, since the fire prevention window glass has a single structure, a single fire prevention window glass is used to shut off the heat from the outdoor flame. Even if the windowpane is thick, the heat insulation against the flame is not enough, and if the fireproof windowpane is damaged by the flame, the fire protection function is completely lost,
And the like.
[0007]
The present invention has been made in view of the problems of the related art, and by providing a plurality of heat blocking functions for a flame in a fire prevention window glass part, it is possible to completely cut off the flame in the fire prevention window glass part, and to provide a fire prevention window glass. An object of the present invention is to provide a fire prevention window having an improved fire prevention function by reliably performing a heat seal around a part.
[0008]
[Means for Solving the Problems]
The present invention achieves such an object, in which an outer glass facing the outdoor side and an inner glass facing the indoor side are arranged side by side on the inner periphery of the frame to prevent the propagation of flame from the outdoor side to the indoor side. In the fire prevention window configured as described above, the inner glass is formed of a multi-layer glass made of heat-resistant glass, and a fire-resistant glass body formed by forming a heat insulating gas layer between the outer glass and the inner glass is provided. The inner glass is provided with a heat insulating layer between a plurality of glasses.
[0009]
In this invention, the inner glass is preferably configured in the following two forms.
In a first mode, the inner glass includes a plurality of single glasses, and the heat insulating layer is provided between each single glass.
In a second mode, each of the plurality of glasses constituting the inner glass is formed as a double glass body in which a film is sandwiched between double glasses, and heat insulation is provided between each double glass body. A layer is provided.
[0010]
In this invention, preferably, the frame body is formed by an outer frame material fixed to a structure such as a building and a frame material mounted on the inner periphery of the outer frame material via a seal material for fluid sealing. Preferably, the fire prevention glass body is attached to the inner periphery of the frame material via the heat sealing material.
Preferably, the sealing material between the outer frame material and the frame material is formed of a heating sealing material whose volume changes depending on the temperature near the sealing material. Further, the heat sealing material is preferably made of a carbon-based foam material whose volume increases with a rise in temperature.
[0011]
Further, in this invention, preferably, a lower inner peripheral surface of the frame body facing an outer peripheral lower part of the fire protection glass body is formed as an inclined surface inclined outward, and an outer surface of the fire protection glass body and the lower inner circumference are formed. It is preferable to install a draining member between the surface and the surface to block the passage of fluid.
[0012]
In this invention, preferably, the inner peripheral surface of the frame body facing the outer periphery of the fireproof glass body is formed in a horizontal plane perpendicular to the surface of the fireproof glass body, and the outer peripheral surface of the fireproof glass body and the inner peripheral surface thereof are formed. It is preferable to provide a sealing member for a fluid seal between the surface and the surface.
[0013]
According to this invention, since a heat-insulating gas layer is formed between the outer glass and the inner glass, and the inner glass has a structure in which a heat-insulating layer is formed between a plurality of heat-resistant glasses, flames from outdoors can be prevented. Even when reaching the outer glass, the first glass is heat-insulated by the outer glass and the heat-insulating gas layer between the outer glass and the inner glass to reduce the amount of heat transferred to the inner glass. The second heat insulation is performed by the plurality of heat-resistant glasses and the heat-insulating layer formed between the heat-resistant glasses, thereby suppressing the amount of heat that passes through the inner glass and is transmitted indoors. Thereby, the heat from the flame is suppressed from being transmitted indoors.
[0014]
In addition, since the inner glass has a structure in which a heat insulating layer is formed between a plurality of heat-resistant glasses, even if the outer glass is damaged by a flame from the outside, the outermost heat-resistant glass of the inner glass may generate a flame. After receiving, the heat-insulating layer formed between the heat-resistant glass and the heat-resistant glass suppresses heat and suppresses the amount of heat transmitted to the inner heat-resistant glass. To a permissible level to avoid breakage, thereby suppressing the heat from the flame from being transmitted indoors.
In addition, since the plurality of heat-resistant glasses constituting the inner glass can be made of tempered laminated glass, they are hardly broken, have security, and have a better appearance than conventional screened glass.
[0015]
In particular, each of the plurality of glasses constituting the inner glass is formed into a double glass body having a film sandwiched between the double glasses, and the heat insulating layer is provided between the double glass bodies. In the inner glass, the secondary glass body, the film sandwiched between the glasses of the double glass body, and the heat insulating layer formed between the double glass bodies extend over the secondary glass body. Since heat can be shut off, the effect of shielding heat indoors is further improved.
[0016]
Therefore, according to the invention, the heat by the flame from the outdoors, the first heat insulation by the outer glass and the heat insulating gas layer between the outer glass and the inner glass, and the plurality of heat-resistant glasses in the inner glass and The heat transfer to the indoor side can be greatly reduced by the second heat insulation by the heat insulating layer formed between the heat resistant glass, and the outer glass and the heat insulating gas are formed by the plural heat resistant glass constituting the inner glass. Since it receives the residual amount of heat passing through the layer, it is possible to reliably prevent the inner glass from being damaged by the heat from the flame, and to suppress the heat from the flame from being transmitted indoors, thereby providing reliable fire protection. it can.
[0017]
In this invention, preferably, a heating sealing material whose volume changes depending on the temperature in the vicinity of the fireproof glass body is provided between the outer circumference of the fireproof glass body and the inner circumference of the frame.
The heat sealing material is preferably made of a carbon-based foam material whose volume increases with a rise in temperature.
[0018]
With this configuration, when the temperature in the vicinity of the fireproof glass body rises due to the flame from the outdoor side, the fireproof glass body is preferably made of a carbon-based foam material installed between the outer circumference of the fireproof glass body and the inner circumference of the frame. The gap between the outer periphery of the fire-resistant glass body and the inner periphery of the frame is completely closed by expanding the heating sealing material to a volume of about 20 times due to a rise in temperature, and the flame passes through the gap to the indoor side. Can be reliably prevented from being transmitted to the user.
[0019]
In this invention, preferably, the frame is made of wood, and an airtight material for fluid sealing is interposed between the inner and outer surfaces of the fireproof glass and the frame.
With this configuration, the frame made of wood has good aesthetic appearance during normal use, avoids the occurrence of dew condensation, and, when heated to a high temperature due to a flame, carbonizes to prevent further combustion. Thus, propagation of the flame to the indoor side is avoided.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail using embodiments shown in the drawings. However, unless otherwise specified, the dimensions, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention, but are merely illustrative examples.
[0021]
FIG. 1 is a sectional view showing a structure of a fire window according to a first embodiment of the present invention, and FIG. 2 is a view corresponding to FIG. 1 showing a second embodiment of the fire window. FIG. 3 is a detailed view of a Z portion of FIGS. 1 and 2 showing a first example of the inner glass, and FIG. 4 is a detailed view of a Z portion of FIGS. 1 and 2 showing a second example of the inner glass.
[0022]
In FIG. 1 showing the structure of a fire prevention window according to a first embodiment of the present invention, reference numeral 01 denotes a fire prevention glass body, which is configured as follows.
Reference numeral 2 denotes an outer glass made of a single-layer glass that faces the outdoors 100 and has heat shielding properties and prevents infrared rays, and 1 denotes an inner glass made of multiple glasses (details will be described later) that faces the indoor 200 side. The inner glass 1 and the inner glass 1 are disposed with a heat insulating space 3 formed of a gas layer such as an air layer interposed therebetween. Reference numeral 7 denotes a spacer provided over the entire outer peripheral portion of the heat insulating space 3. The spacer 7 makes the heat insulating space 3 fluid-tight with the outside.
[0023]
Reference numeral 4 denotes a hollow box-shaped outer frame made of wood, the outer periphery of which is fixed to a structure such as a building. Reference numeral 5 denotes a hollow frame member made of wood, which is attached to the inner periphery of the outer frame member via a packing 18.
Reference numeral 9 denotes a heat-expanding material, which is mounted on the outer frame member 4 so as to face a space 16 between the inner periphery of the outer frame member 4 and the outer periphery of the frame member 5. The heat-expanding material 9 may be any substance whose volume increases due to a rise in its temperature. In this embodiment, the heat-expanding material 9 is made of a carbon-based foam.
[0024]
12 is a pressing material, 8 is an airtight material provided in pairs, and one of the airtight materials 8 is sandwiched between the outer peripheral portion of the outer glass 2 on the outdoor 100 side and the inner surface of the pressing material 12, The other is sandwiched between the outer peripheral portion of the inner glass 1 on the indoor 200 side and the frame member 5, and the fireproof glass body 01 is separated from the frame member by the pressing force of the pressing member 12 through the airtight material 8. 5 and the pressing member 12.
The frame member 5 is configured such that a lower inner peripheral surface 5a facing the outer peripheral lower portion of the fire prevention glass body 01 is a slope inclined toward the outdoor 100 side, and a draining member 11 is provided on an outlet side of the lower inner peripheral surface 5a. It is installed to block water from entering the lower inner peripheral surface 5a. Reference numeral 13 denotes a stainless plate made of a thin plate adhered along the inner peripheral surface of the frame member 5 including the lower inner peripheral surface 5a.
[0025]
Numeral 6 denotes a heat-expanding material, which is mounted on the frame member 5 so as to face a space 10 between the inner periphery of the frame member 5 and the outer periphery of the fireproof glass body 01. The heat-expanding material 6 may be a substance whose volume increases due to a temperature rise thereof, similarly to the heat-expanding material 9, and is made of a carbon-based foam in this embodiment.
Reference numeral 15 denotes an operating handle attached to the end face of the frame member 5 on the indoor side of 200.
[0026]
The inner glass 1 may use either the first example of FIG. 3 or the second example of FIG.
In FIG. 3 showing a first example of the inner glass 1, reference numerals 1 a and 1 b denote double glasses made of heat-resistant glass composed of two pieces of tempered laminated glass in the inner glass, and the double glass is composed of two sheets of glass. An ultra-thin noncombustible film 1c is sandwiched therebetween. Reference numeral 1d denotes a heat insulating layer provided between the double glasses 1a and 1b, which is made of a heat-resistant transparent material, preferably a transparent sodium silicate or an air layer. 1e is a sealing material provided along the outer periphery of the heat insulating layer 1d. A supporting member 1f fixes and holds the outer peripheries of the double glasses 1a and 1b, the heat insulating layer 1d and the sealing material 1e over the entire circumference.
The double glass 1a, 1b and the heat insulating layer 1d may be combined in two or more sets.
[0027]
In FIG. 4 showing a second example of the inner glass 1, 1g and 1h are single glasses made of heat-resistant tempered glass constituting the inner glass. Reference numeral 1d denotes a heat insulating layer provided between the single glass 1g and 1h, which is made of a heat-resistant transparent solid material or an air layer as in the first example. 1e is a sealing material provided along the outer periphery of the heat insulating layer 1d. 1f is a supporting member which fixes and holds the outer peripheries of the single glass 1g, 1h, the heat insulating layer 1d and the sealing material 1e over the entire circumference.
The single glass 1g, 1h and the heat insulating layer 1d may be combined in two or more sets.
[0028]
In the fire protection window having such a configuration, when a flame from the outside 100 reaches the outer glass 2, an insulating space 3 is formed between the outer glass 2 and the inner glass 1, and the inner glass 1 is further heat-resistant. Since the heat insulating layer 1d is formed between the double glasses 1a and 1b or the single glasses 1g and 1h made of glass, the heat insulation between the outer glass 2 and the outer glass 2 and the inner glass 1 is achieved. By performing the primary heat interruption in the space 3, the amount of heat transmitted to the inner glass 1 is reduced.
[0029]
Further, a second heat interruption is performed by the double glass 1a, 1b or the single glass 1g, 1h made of a plurality of heat resistant glasses constituting the inner glass 1 and the heat insulating layer 1d formed between the heat resistant glass. Thereby, the amount of heat transmitted through the inner glass 1 to the indoor 200 is suppressed. This suppresses the heat from the flame being transmitted to the room 200.
[0030]
Further, since the inner glass 1 has a structure in which the heat insulating layer 1d is formed between the double glass 1a, 1b or the single glass 1g, 1h made of a plurality of heat-resistant glasses, Even if the outer glass 2 is broken, after the outermost double glass 1b or single glass 1h made of heat resistant glass of the inner glass 1 receives the flame, the double glass 1a, 1b or single glass made of the heat resistant glass is received. The heat is interrupted by the glass 1g, 1h and the heat insulating layer 1d formed between the heat-resistant glass to suppress the amount of heat transferred to the double glass 1a or the single glass 1g made of the internal heat-resistant glass.
As a result, the temperature of the double glass 1a or single glass 1g made of the heat-resistant glass inside is reduced to an allowable level in terms of strength, thereby avoiding breakage, and heat from the flame is transmitted to the room 200. Is suppressed.
[0031]
Further, when the temperature in the vicinity of the fire protection glass body 01 rises due to the flame from the outdoor 100 side, the carbon-based foam material installed between the outer circumference of the fire protection glass body 01 and the inner circumference of the frame member 5 causes The heat-expanding material 6 expands to about 20 times the volume due to the temperature rise.
Due to the volume expansion of the heat-expanding material 6, the space 10 between the outer periphery of the fireproof glass body 01 and the inner periphery of the frame member 5 is completely closed, and the flame is transmitted to the indoor 200 through the space 10. To block.
[0032]
When the temperature of the space 17 between the outer frame member 4 and the frame member 5 rises due to the flame from the outdoor 100 side, the carbon-based material installed between the outer frame member 4 and the frame member 5 increases. The heat-expanding material 9 made of a foam material expands to about 20 times the volume due to the temperature rise, and the volume expansion of the heat-expanding material 9 completely fills the space 17 between the outer frame member 4 and the frame member 5. To prevent the flame from being transmitted through the space 17 to the indoor 200 side.
[0033]
In the second embodiment of the fire prevention window shown in FIG. 2, the inner peripheral surface 5a of the frame member 5 facing the outer periphery of the fire prevention glass body 01 is formed in a horizontal plane perpendicular to the surface of the fire prevention glass body 01, The draining member 11 in the first embodiment is eliminated, and the pressing member 12 is also used as the draining member.
Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals. Note that the inner glass 1 may use either the first example in FIG. 3 or the second example in FIG.
[0034]
【The invention's effect】
As described above, according to the present invention, the heat by the flame from the outdoors, the first heat interruption by the outer glass and the heat insulating gas layer between the outer glass and the inner glass, and a plurality of sheets in the inner glass The heat transfer to the indoor side can be greatly reduced by the second heat insulation by the heat-resistant glass and the heat-insulating layer formed between the heat-resistant glass, and the outer glass is formed by a plurality of heat-resistant glasses constituting the inner glass. And because it receives the residual amount of heat that has passed through the heat-insulating gas layer, it is possible to reliably prevent the inner glass from being damaged by the heat from the flame, and to suppress the heat from the flame from being transmitted indoors. I can do it.
[0035]
Further, according to the present invention, when the temperature in the vicinity of the fireproof glass body rises due to a flame from the outdoor side, preferably a carbon-based foam material provided between the outer circumference of the fireproof glass body and the inner circumference of the frame body is used. The heating sealing material expands to a volume of about 20 times due to a rise in temperature, thereby completely closing the gap between the outer periphery of the fire prevention glass body and the inner periphery of the frame body, and allowing the flame to pass through the gap. Transmission to the inside can be reliably avoided.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a structure of a fire protection window according to a first embodiment of the present invention.
FIG. 2 is a view corresponding to FIG. 1, showing a second embodiment of the fire prevention window.
FIG. 3 is a detailed view of a portion Z of FIGS. 1 and 2 showing a first example of the inner glass.
FIG. 4 is a detailed view of a portion Z of FIGS. 1 and 2 showing a second example of the inner glass.
[Explanation of symbols]
01 fire prevention glass body 1 inner glass 1a, 1b double glass 1c film 1d heat insulating layer 1g, 1h single glass 2 outer glass 3 heat insulating space 4 outer frame material 5 frame material 5a lower inner peripheral surface 6, 9 heating expansion material 7 spacer 8 Airtight material 10, 17 Space 11 Drain member 12 Pressing material 18 Packing 100 Outdoor 200 Indoor

Claims

On the inner periphery of the frame, an outer glass facing the outdoor side and an inner glass facing the indoor side are juxtaposed, and in the fire prevention window configured to prevent the propagation of the flame from the outdoor side to the indoor side, The glass is composed of multiple glasses made of heat-resistant glass, and comprises a fire-resistant glass body formed by forming a heat-insulating gas layer between the outer glass and the inner glass, and the inner glass is made of a plurality of glass. A fire-retardant window structure characterized by providing a heat insulating layer between them.

The structure of the fire prevention window according to claim 1, wherein the inner glass includes a plurality of single glasses, and the heat insulating layer is provided between each single glass.

Each of the plurality of glasses constituting the inner glass is formed into a double glass body in which a film is sandwiched between double glasses, and the heat insulating layer is provided between each double glass body. The structure of the fire prevention window according to claim 1, wherein:

2. A fire prevention window according to claim 1, wherein a heating sealing material whose volume changes according to a temperature near the fire prevention glass body is provided between an outer periphery of the fire prevention glass body and an inner periphery of the frame. Structure.

The fire prevention window structure according to claim 4, wherein the heat sealing material is made of a carbon-based foam material whose volume increases with a rise in temperature.

2. The structure of the fire prevention window according to claim 1, wherein the frame is made of wood, and an airtight material for fluid sealing is interposed between the inner and outer surfaces of the fire protection glass and the frame.

The frame body is constituted by an outer frame material fixed to a structure such as a building and a frame material mounted on the inner periphery of the outer frame material via a seal material for fluid sealing, and 2. The structure of the fire prevention window according to claim 1, wherein the fire prevention glass body is mounted around a periphery of the fire prevention glass body via a heating sealing material whose volume changes depending on a temperature near the fire prevention glass body.

8. The structure of the fire prevention window according to claim 7, wherein the sealing material between the outer frame material and the frame material is a heating sealing material made of a carbon-based foam material whose volume increases with a rise in temperature.

The lower inner peripheral surface of the frame body facing the outer peripheral lower part of the fire-resistant glass body is formed as an inclined surface inclined outward, and the passage of fluid between the outer peripheral surface of the fire-resistant glass body and the lower inner peripheral surface. 2. The structure of the fire prevention window according to claim 1, further comprising a drainage member for shutting off water.

An inner peripheral surface of the frame body facing the outer periphery of the fire-resistant glass body is formed in a horizontal plane perpendicular to the surface of the fire-resistant glass body, and a fluid seal is provided between the outer surface of the fire-resistant glass body and the inner peripheral surface. The structure of the fire prevention window according to claim 1, wherein the sealing member is provided.