JP6431416B2 - Fall-off prevention device and fall-off prevention method for fireproof caps installed in the fire-prevention compartment penetration of the refrigerant piping system - Google Patents

Fall-off prevention device and fall-off prevention method for fireproof caps installed in the fire-prevention compartment penetration of the refrigerant piping system Download PDF

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JP6431416B2
JP6431416B2 JP2015054363A JP2015054363A JP6431416B2 JP 6431416 B2 JP6431416 B2 JP 6431416B2 JP 2015054363 A JP2015054363 A JP 2015054363A JP 2015054363 A JP2015054363 A JP 2015054363A JP 6431416 B2 JP6431416 B2 JP 6431416B2
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真二 森
真二 森
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Sanki Engineering Co Ltd
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本発明は一般に、冷媒配管系の防火区画貫通部の耐火措置工法に関連する技術に関する。より詳細には、本発明は、前記耐火措置工法において設置される耐火キャップの脱落防止装置および脱落防止方法に関する。   TECHNICAL FIELD The present invention generally relates to a technique related to a fireproofing method for a fire prevention compartment penetration of a refrigerant piping system. More specifically, the present invention relates to a dropout prevention device and dropout prevention method for a fireproof cap installed in the fireproofing method.

耐火建築物においては、躯体などで防火区画を形成するところ、防火区画に設備側で貫通する部材がなければ区画は比較的容易である。しかし、建築物には空調設備などで配管・ダクト・電線管などのように、どうしても区画を貫通するものが存在する。例えば、フロン冷媒を用いるパッケージ空調機を空調設備として備える建築物では、居室と廊下、機械室と居室などを仕切る防火区画を、冷媒配管を貫通させながら室内機と室外機との間を配管しなければならない。
このような冷媒配管などを防火区画に貫通させる際に、火災発生時に火炎により短時間に燃え落ちて穴が開き、隣接する室などに火炎や煙が浸入することを防止する部材構造に関する技術(特許文献1および特許文献2参照)等が知られている。
In a fireproof building, a fireproof section is formed by a housing or the like, and the section is relatively easy if the fireproof section has no member penetrating on the equipment side. However, some buildings, such as pipes, ducts, and electric pipes, are inevitably penetrating the compartments with air conditioning equipment. For example, in a building equipped with a packaged air conditioner that uses chlorofluorocarbon refrigerant as air conditioning equipment, a fire prevention section that partitions a room and a corridor, a machine room and a room, etc. is piped between the indoor unit and the outdoor unit while penetrating the refrigerant pipe. There must be.
When passing through such a refrigerant pipe into a fire prevention section, a technology related to a member structure that prevents a flame or smoke from entering a neighboring chamber or the like by burning in a short time by a flame and opening a hole when a fire occurs ( Patent Document 1 and Patent Document 2) are known.

一方、設備の区画貫通物としては細物である、冷媒管、ドレン管および渡り配線を束ねた配管(以下「冷媒配管系」という)が防火区画を貫通する箇所は、原則としては建築基準法に適合する工法(防火区画の躯体面から離れる方向に両面とも1m以上、ロックウール保温筒などを延長して、貫通部もロックウールを充填する工法)を採用すべきであるが、不燃材料以外の材料が防火区画を貫通する場合の防火措置工法は、日本建築センターの大臣認定された冷媒配管防火区画貫通部措置工法(以下「認定工法」という)によって施工することが義務づけられている。前者の工法では、壁や床などの貫通部に所定厚の不燃材であるロックウールなどの断熱材を設置する。これに対して、後者の認定工法を用いれば、ロックウールなどの不燃材断熱材の設置が不要となり、不燃性とはいえない空調用保温付被覆銅管とドレン管、渡り配線のセット管束がそのまま利用でき、工事が簡素化されるという利点が得られる。   On the other hand, the pipe that bundles refrigerant pipes, drain pipes, and crossover wiring (hereinafter referred to as “refrigerant piping system”), which is a thin article as a facility penetration, penetrates the fire prevention zone in principle. Should be adopted (a construction method in which rock wool insulation cylinders, etc. are extended on both sides in the direction away from the enclosure surface of the fire prevention compartment, and the penetrating part is filled with rock wool), but other than non-combustible materials The construction method of fire prevention measures when the above materials penetrate the fire prevention compartment is obliged to be constructed by the refrigerant construction fire prevention section penetration construction method (hereinafter referred to as “accredited construction method”) approved by the Minister of Construction of Japan. In the former method, a heat insulating material such as rock wool, which is a non-combustible material having a predetermined thickness, is installed in a penetrating portion such as a wall or floor. On the other hand, if the latter certified construction method is used, installation of non-combustible material heat insulating material such as rock wool is not required, and heat-insulated coated copper and drain tubes for air conditioning that cannot be said to be non-flammable, and set bundles of transition wires It can be used as it is, and there is an advantage that the construction is simplified.

上記認定工法のうち耐火キャップを使用する工法(以下「耐火キャップ式認定工法」という)が知られている。図4は、耐火キャップ式認定工法によって施工された防火区画貫通部の一例を示した断面図である。耐火キャップ式認定工法では、冷媒配管系を専用の底板支持金具によって貫通部内で支持し、空隙に熱膨張性耐熱シール材を充填し、貫通部の両側に耐熱キャップを設置することによって、防火区画の片側で火災が発生して、すぐに空調用保温付被覆銅管である冷媒管や渡り配線が溶けて減肉しても、熱膨張性耐熱シール材が4倍程度膨張することで減肉分を塞ぐので、防火区画を守ることができる。   Among the above-mentioned certified construction methods, a construction method using a fireproof cap (hereinafter referred to as “fireproof cap type authorized construction method”) is known. FIG. 4 is a cross-sectional view showing an example of a fireproof compartment penetrating portion constructed by a fireproof cap type authorized construction method. In the fireproof cap type certified construction method, the refrigerant piping system is supported in the penetration part by a dedicated bottom plate support bracket, the space is filled with a heat-expandable heat-resistant sealing material, and heat-resistant caps are installed on both sides of the penetration part, thereby providing a fireproof compartment. Even if a fire broke out on one side of the pipe and the refrigerant pipe and the jumper wiring, which are heat-insulated coated copper pipes for air conditioning, immediately melted and thinned, the heat-expandable heat-resistant sealing material expands by about 4 times to reduce the thickness. Because it closes the minutes, you can protect the fire protection area.

特許第3339621号公報Japanese Patent No. 3339621 特開2007−154566号公報JP 2007-154666 A

しかしながら、火災が発生しない平常時には熱膨張性耐熱シール材が有する粘着性により、冷媒管を流れる冷媒の温度が変化すると、例えば20m直管延長している銅管では、冷媒温度変化20〜40°C程度で、例えば数センチメートル程度冷媒管が伸縮するため、熱膨張性耐熱シール材の塊が冷媒管に同伴され、耐火キャップを内側から強い力で押したり押すのをやめたりするのを、例えば、夜間パッケージ空調機を停止する場合では、1日1回動作することになり、耐火キャップを固定しているタッピングビスが抜けて耐火キャップが脱落する(図5参照)という不都合がある。一方、脱落しにくいように耐火キャップや底板支持金具などの部材自体を改造することは、認定工法を損なうこととなるため、認められない。さらに、上記特許文献に記載された技術は、図4に示す耐火キャップ式認定工法とは異なる技術なので、図4の耐火キャップ式認定工法に転用して改造することはもちろんできない。   However, when the temperature of the refrigerant flowing through the refrigerant pipe changes due to the adhesiveness of the heat-expandable heat-resistant sealing material during a normal period when no fire occurs, for example, in a copper pipe extending 20 m straight, the refrigerant temperature changes 20 to 40 °. At about C, for example, the refrigerant pipe expands and contracts by about a few centimeters, so that a lump of heat-expandable heat-resistant sealing material is accompanied by the refrigerant pipe and stops pushing or pushing the fireproof cap with a strong force from the inside. For example, when the nighttime package air conditioner is stopped, it operates once a day, and there is a disadvantage that the tapping screw fixing the fireproof cap comes off and the fireproof cap falls off (see FIG. 5). On the other hand, remodeling the members such as the fireproof cap and the bottom plate support metal so as not to drop off is not allowed because it will damage the certified construction method. Furthermore, since the technique described in the above-mentioned patent document is a technique different from the fireproof cap type authorized construction method shown in FIG. 4, it cannot be converted to the fireproof cap type authorized construction method shown in FIG.

本発明は、このような状況に鑑みて開発されたものであって、認定工法を損なうことなしに、耐火キャップの脱落を防止する装置および方法を提供することを目的としている。   The present invention has been developed in view of such a situation, and an object of the present invention is to provide an apparatus and a method for preventing a fireproof cap from falling off without impairing an authorized construction method.

本願請求項1に記載された装置は、冷媒配管系の防火区画貫通部に設置される、前記貫通部に貫装される冷媒配管系の外周に熱膨張性シールを充填して前記貫通部の端面を耐火キャップで閉止する耐火キャップ式認定工法の耐火キャップの脱落を防止する装置であり、前記貫通部の一方の側又は両方の側に取り付けられた耐火キャップを被覆するように配置され、前記冷媒配管系が通過する開口が中央に設けられたラス網を備え、前記ラス網の外周が、タッピングビスによって前記貫通部の周囲の耐火性躯体に固定され、前記ラス網の前記開口の周囲部分が、結束バンドによって前記冷媒配管系に結束されていることを特徴とするものである。   The apparatus according to claim 1 of the present application is installed in a fire prevention compartment penetration portion of a refrigerant piping system, and a heat-expandable seal is filled in an outer periphery of the refrigerant piping system that penetrates the penetration portion. It is a device that prevents the fire cap from falling off the fire cap of the fire cap approved construction method that closes the end face with a fire cap, and is arranged so as to cover the fire cap attached to one side or both sides of the penetration portion, An opening through which the refrigerant piping system passes is provided in the center, and an outer periphery of the lath net is fixed to a refractory housing around the through portion by a tapping screw, and a peripheral portion of the opening of the lath net However, they are bound to the refrigerant piping system by a binding band.

本願請求項2に記載された耐火キャップの脱落を防止する装置は、請求項1に記載された装置に加え、さらに前記貫通部を貫装される冷媒配管系の外周に充填される熱膨張性シールを、防火区画躯体の厚み中央側から支持する底板支持金具を備え、該底板支持金具は前記貫通部端部に固定されていることを特徴とするものである。   The apparatus for preventing the fire cap from falling off according to claim 2 of the present application is in addition to the apparatus described in claim 1, and further has a thermal expansibility filled in the outer periphery of the refrigerant piping system penetrating the through portion. A bottom plate support metal fitting for supporting the seal from the thickness center side of the fireproof compartment housing is provided, and the bottom plate support metal fitting is fixed to the end portion of the penetrating portion.

本願請求項3に記載された耐火キャップの脱落を防止する装置は、請求項1又は2に記載された装置において、前記防火区画と耐火性躯体は壁であることを特徴とするものである。   The apparatus for preventing the fire cap from falling off according to claim 3 of the present application is characterized in that in the apparatus described in claim 1 or 2, the fireproof compartment and the fireproof housing are walls.

本願請求項4に記載された耐火キャップの脱落を防止する装置は、請求項1又は2に記載された装置において、前記防火区画と耐火性躯体は床であることを特徴とするものである。   The apparatus for preventing the fire cap from falling off according to claim 4 of the present application is characterized in that in the apparatus described in claim 1 or 2, the fire protection compartment and the fire resistant enclosure are floors.

本願請求項5に記載された方法は、冷媒配管系の防火区画貫通部に設置される、前記貫通部に貫装される冷媒配管系の外周に熱膨張性シールを充填して前記貫通部の端面を耐火キャップで閉止する耐火キャップ式認定工法の耐火キャップの脱落を防止する方法であり、前記貫通部の一方の側又は両方の側に取り付けられた耐火キャップを被覆し、中央に設けられた開口に前記冷媒配管系を通すようにラス網を配置し、前記ラス網の外周を、タッピングビスによって前記貫通部の周囲の耐火性躯体に固定し、前記ラス網の前記開口の周囲部分を、結束バンドによって前記冷媒配管系に結束することを特徴とするものである。   The method according to claim 5 of the present invention is such that a heat-expandable seal is filled in an outer periphery of a refrigerant piping system that is installed in a fire prevention compartment penetration portion of a refrigerant piping system and is inserted into the penetration portion. It is a method to prevent the fire cap of the fire cap approved type construction method that closes the end face with a fire cap, and covers the fire cap attached to one side or both sides of the penetrating portion, and is provided in the center. A lath net is disposed so that the refrigerant piping system passes through the opening, and the outer periphery of the lath net is fixed to a fireproof casing around the through portion by a tapping screw, and the peripheral portion of the opening of the lath net is The refrigerant piping system is bound by a binding band.

本願請求項6に記載された耐火キャップの脱落を防止する方法は、請求項5に記載された方法に加え、さらに前記貫通部を貫装される冷媒配管系の外周に充填される熱膨張性シールを、防火区画躯体の厚み中央側から支持する底板支持金具を備え、該底板支持金具は前記貫通部端部に固定されていることを特徴とするものである。   In addition to the method described in claim 5, the method for preventing the fire cap from falling off according to claim 6 of the present application is further provided with a thermal expansibility filled in the outer periphery of the refrigerant piping system penetrating the through portion. A bottom plate support metal fitting for supporting the seal from the thickness center side of the fireproof compartment housing is provided, and the bottom plate support metal fitting is fixed to the end portion of the penetrating portion.

本願請求項7に記載された耐火キャップの脱落を防止する方法は、請求項5又は6に記載された方法において、前記防火区画と耐火性躯体は壁であることを特徴とするものである。   The method for preventing the fire cap from falling off according to claim 7 of the present application is characterized in that, in the method according to claim 5 or 6, the fire protection compartment and the fireproof housing are walls.

本願請求項8に記載された耐火キャップの脱落を防止する方法は、請求項5又は6に記載された方法において、前記防火区画と耐火性躯体は床であることを特徴とするものである。   The method for preventing the fire cap from falling off according to claim 8 of the present application is characterized in that, in the method according to claim 5 or 6, the fireproof compartment and the fireproof housing are floors.

本発明によれば、認定工法を構成する部材自体を改造する必要はないので、認定工法を損なうことはない。すなわち、本発明の装置を使用し、又は本発明の方法を実施したとしても、認定工法として認められるので、工事が簡素化されるという認定工法の利点が失われることはない。特に天井隠蔽側で本発明の装置を使用し又は本発明の方法を実施すると、本来的に点検しにくい箇所である天井内かつ防火区画壁際における耐火措置を、補修不要で有効に長きに亘り保持することができる。本発明の装置および方法は、安価な材料で簡単に実施できるので、効果的である。   According to the present invention, it is not necessary to modify the member itself that constitutes the authorized construction method, so that the authorized construction method is not impaired. That is, even if the apparatus of the present invention is used or the method of the present invention is carried out, it is recognized as an authorized construction method, so the advantage of the authorized construction method that construction is simplified is not lost. In particular, when the apparatus of the present invention is used or the method of the present invention is carried out on the ceiling concealment side, the fire-resistant measures in the ceiling and near the fire-proof compartment wall, which are inherently difficult to inspect, are effectively maintained for a long time without repair. can do. The apparatus and method of the present invention are effective because they can be easily implemented with inexpensive materials.

本発明の好ましい実施の形態に係る脱落防止装置が防火区画貫通部に設置されている状態を示した断面図である。It is sectional drawing which showed the state by which the drop-off prevention apparatus which concerns on preferable embodiment of this invention is installed in the fire prevention division penetration part. 図1の脱落防止装置が防火区画貫通部に設置されている状態を示した斜視図である。It is the perspective view which showed the state by which the drop-off prevention apparatus of FIG. 1 was installed in the fire prevention compartment penetration part. 図1の脱落防止装置が設置される手順を示した一連の図である。It is a series of figures which showed the procedure in which the drop-off prevention apparatus of FIG. 1 is installed. 耐火キャップ式認定工法によって施工された防火区画貫通部の一例を示した断面図である。It is sectional drawing which showed an example of the fire prevention division penetration part constructed by the fireproof cap type | mold authorized construction method. 冷媒管の伸縮により耐火キャップが脱落した状態を模式的に示した図である。It is the figure which showed typically the state from which the fireproof cap fell off by expansion and contraction of the refrigerant pipe.

次に図面を参照して、本発明の好ましい実施の形態に係る冷媒配管系の防火区画貫通部に設置される耐火キャップの脱落防止装置(以下「脱落防止装置」という)について説明する。図1は、本発明の好ましい実施の形態に係る脱落防止装置が防火区画貫通部に設置されている状態を示した断面図、図2は図1の脱落防止装置を天井隠蔽側から見た斜視図である。   Next, with reference to the drawings, a fireproof cap drop-off prevention device (hereinafter referred to as “drop-off prevention device”) installed in a fire prevention compartment penetration of a refrigerant piping system according to a preferred embodiment of the present invention will be described. FIG. 1 is a cross-sectional view showing a state in which a dropout prevention device according to a preferred embodiment of the present invention is installed in a fire-protection section penetration, and FIG. 2 is a perspective view of the dropout prevention device of FIG. FIG.

図1において耐火壁の右側が機械室などの露出側、左側が天井隠蔽側(天井は図示せず)である。耐火壁には貫通穴が設けられており、冷媒配管系(冷媒管、ドレン管、渡り配線)が貫通穴を貫通している。冷媒管はフロン冷媒が流通する配管でガス管と液管とからなり、室外機と室内機とを連結して冷凍サイクルを形成する。ドレン管は、室内機の蒸発器表面から凝縮水として生じるドレンを雑排水などに導く管である。渡り配線は、室外機と室内機との間の制御信号をやり取りする弱電配線である。冷媒管及びドレン管内を流れる流体が低温である場合があり、配管表面での結露を防止するため保温が必要である。通常冷媒配管は空調用冷媒管用被覆銅管を用いることが多く、本実施例でもこれを用いて安価で簡便な施工としている。以降、耐火性躯体を壁として論じていくが、床であってもよい。床の場合には、下の階側を天井隠蔽側と読みかえればよい。   In FIG. 1, the right side of the refractory wall is the exposed side of the machine room or the like, and the left side is the ceiling concealment side (ceiling not shown). The fire wall is provided with a through hole, and a refrigerant piping system (refrigerant pipe, drain pipe, crossover wiring) passes through the through hole. The refrigerant pipe is a pipe through which a chlorofluorocarbon refrigerant circulates, and includes a gas pipe and a liquid pipe. The outdoor unit and the indoor unit are connected to form a refrigeration cycle. The drain pipe is a pipe that guides drain generated as condensed water from the evaporator surface of the indoor unit to miscellaneous drainage or the like. The transition wiring is a low-power wiring that exchanges control signals between the outdoor unit and the indoor unit. The fluid flowing through the refrigerant pipe and the drain pipe may be at a low temperature, and heat insulation is necessary to prevent condensation on the pipe surface. In general, the refrigerant pipe is often a coated copper pipe for a refrigerant pipe for air-conditioning, and this embodiment is also used for cheap and simple construction. Hereinafter, the fire-resistant frame will be discussed as a wall, but it may be a floor. In the case of a floor, the lower floor side may be read as the ceiling concealment side.

冷媒配管系の各管は、タッピングビス14によって貫通穴の端面である入口と出口にそれぞれ固定されるドーナツ状の底板を有する底板支持金具12により、貫通穴との隙間を概略閉鎖できるように、かつ貫通穴と冷媒配管系の側面との間隔を概略均等に保持できるように位置規制されている。その貫通穴と冷媒配管系の側面との間隔の一部、底板支持金具12の貫通穴に沿った部位と各管側面との間には、熱膨張性耐熱シール材16が充填され、底板支持金具12と底板アダプター12′で貫通穴内部にはみ出さないように支持されている。さらに、冷媒配管系の太さが細い場合には、充填された熱膨張性耐熱シール材16が脱落しないように、底板支持金具12の内径を小さくするため底板アダプター12′が底板支持金具12に取り付けられており、貫通穴の入口と出口は、耐火キャップ18によって被覆されている。貫通穴のこのような構造は、上述の耐火キャップ式認定工法によって施工されたものである。   Each pipe of the refrigerant piping system is configured so that the gap with the through hole can be roughly closed by the bottom plate support fitting 12 having a doughnut-shaped bottom plate fixed to the inlet and the outlet which are the end faces of the through hole by the tapping screw 14, respectively. In addition, the position is regulated so that the distance between the through hole and the side surface of the refrigerant piping system can be maintained approximately evenly. A part of the space between the through hole and the side surface of the refrigerant piping system, between the portion along the through hole of the bottom plate support fitting 12 and the side surface of each pipe, is filled with a heat-expandable heat-resistant sealing material 16 to support the bottom plate. The metal fitting 12 and the bottom plate adapter 12 'are supported so as not to protrude into the through hole. Further, when the refrigerant piping system is thin, the bottom plate adapter 12 ′ is attached to the bottom plate support fitting 12 in order to reduce the inner diameter of the bottom plate support fitting 12 so that the filled heat-expandable heat-resistant sealing material 16 does not fall off. The inlet and outlet of the through hole are covered with a fireproof cap 18. Such a structure of the through hole is constructed by the above-mentioned fireproof cap type authorized construction method.

図1において全体として参照符号20で示される本発明の好ましい実施の形態に係る脱落防止装置は、耐火壁の天井隠蔽側の貫通穴に取り付けられた耐火キャップ18を被覆するように配置されたラス網22を備えている。ラス網22は、市販のラス網を円形又は矩形に切り取り、中央に冷媒配管系の貫通する開口22aを設けたものが使用される。ラス網22は、防錆を考慮して、ビニル被覆されたものを用いるのが好ましい。   A drop-off prevention device according to a preferred embodiment of the present invention generally indicated by reference numeral 20 in FIG. 1 is a lath disposed so as to cover a fire-resistant cap 18 attached to a through-hole on the ceiling concealing side of the fire-resistant wall. A net 22 is provided. As the lath net 22, a commercially available lath net is cut into a circle or a rectangle, and an opening 22a through which the refrigerant piping system passes is provided at the center. The lath net 22 is preferably vinyl-coated in consideration of rust prevention.

脱落防止装置20のラス網22の外周は、複数のタッピングビス24によって耐火壁に固定されている。また、ラス網22の開口22aは、冷媒配管系が貫通しやすいように朝顔形に広げられ、広げられた部分が結束バンド26によって冷媒配管系に結束されている。なお、結束バンド26は、公知のバンド(たとえば、登録商標「インシュロック」として市販されているバンド)を使用してよい。   The outer periphery of the lath net 22 of the dropout prevention device 20 is fixed to the fireproof wall by a plurality of tapping screws 24. Further, the opening 22a of the lath net 22 is expanded in a morning glory shape so that the refrigerant piping system can easily penetrate, and the expanded portion is bound to the refrigerant piping system by a binding band 26. The binding band 26 may be a known band (for example, a band marketed as a registered trademark “Insulok”).

次に主として図3を参照して、冷媒配管系の防火区画貫通部に設置される耐火キャップの脱落防止方法(以下「脱落防止方法」という)について説明する。まず耐火キャップ式認定工法によって防火区画貫通部を施工する。その一般的な手順は以下の通りである。防火区画に予めスリーブなどで躯体に穴を設けたり、ダイヤモンドカッタで開設したりして貫通部を設け、貫通部に冷媒配管系を通す(図3(a)参照)。次いで、底板支持金具12を組み付けて挿入し、タッピングビス14によって耐火壁に堅固に固定する(図3(b)参照)。底板支持金具12は延長されている冷媒配管系に組み付けやすくするため縦に2つ割りになっていて、貫通穴内で組めるようになっていると都合がよい。その際、冷媒配管系の太さにより必要に応じて、底板アダプター12′を底板支持金具12に挿入するとよい場合がある。次いで、底板支持金具12と冷媒配管系との間に、熱膨張性耐熱シール材16を充填し(図3(c)参照)、貫通穴の出入口を耐火キャップ18で被覆する(図3(d)参照)。この耐火キャップ18も、延長されている冷媒配管系に組み付けやすくするため縦に2つ割りになっていて、貫通穴表面で組めるようになっていると都合がよい。なお、耐火キャップ18には、あらかじめ熱膨張性耐熱シール材16を充填しておく。その後、貫通する冷媒配管系と耐火キャップ18との隙間が埋まるように、別な熱膨張性耐熱シール材の断片を充填する。ここまでが耐火キャップ式認定工法による施工である。   Next, with reference mainly to FIG. 3, a method for preventing the fireproof cap from falling off (hereinafter referred to as “dropout preventing method”) installed in the fire prevention compartment penetrating portion of the refrigerant piping system will be described. First, a fireproof compartment penetration is constructed by a fireproof cap type certified construction method. The general procedure is as follows. A through-hole is provided in the fire-proof section in advance by providing a hole in the housing with a sleeve or the like, or opening with a diamond cutter, and the refrigerant piping system is passed through the through-hole (see FIG. 3A). Next, the bottom plate support fitting 12 is assembled and inserted, and firmly fixed to the fireproof wall with the tapping screw 14 (see FIG. 3B). It is convenient that the bottom plate support fitting 12 is divided vertically into two so that it can be easily assembled to the extended refrigerant piping system, and can be assembled in the through hole. At that time, the bottom plate adapter 12 ′ may be inserted into the bottom plate support fitting 12 as necessary depending on the thickness of the refrigerant piping system. Next, a heat-expandable heat-resistant sealing material 16 is filled between the bottom plate support fitting 12 and the refrigerant piping system (see FIG. 3C), and the entrance / exit of the through hole is covered with a fireproof cap 18 (FIG. 3D). )reference). The fireproof cap 18 is also conveniently divided into two vertically for easy assembly to the extended refrigerant piping system, and can be assembled on the surface of the through hole. The fire cap 18 is filled with a heat-expandable heat-resistant sealing material 16 in advance. Thereafter, another piece of heat-expandable heat-resistant sealing material is filled so that the gap between the penetrating refrigerant piping system and the fireproof cap 18 is filled. Up to here is the construction by the fireproof cap type certified construction method.

次いで、中央に開口22aを設けたラス網22を準備し、冷媒配管系にラス網22の開口22aを通す(図3(e)参照)。次いで、ラス網22の外周を複数のタッピングビス24によって耐火壁に固定する(図3(f)参照)。最後に、ラス網22の開口22aを朝顔形に広げ、広げた部分を結束バンド26によって冷媒配管系に結束する(図3(g)参照)。   Next, a lath net 22 having an opening 22a at the center is prepared, and the opening 22a of the lath net 22 is passed through the refrigerant piping system (see FIG. 3E). Next, the outer periphery of the lath net 22 is fixed to the fireproof wall with a plurality of tapping screws 24 (see FIG. 3F). Finally, the opening 22a of the lath net 22 is expanded in a morning glory shape, and the expanded portion is bound to the refrigerant piping system by a binding band 26 (see FIG. 3G).

以上の施工手順において、ラス網22の開口22aをあらかじめ朝顔形に広げておいて、冷媒配管系に通してもよい。また、結束バンド26で結束した後に、タッピングビス24で耐火壁に固定してもよい。なお、図3(d)〜図3(g)においては、図面の明瞭化のため、底板支持金具12等は、一方の側(手前側)に配置されるもののみを図示している。   In the above construction procedure, the opening 22a of the lath net 22 may be expanded in a morning glory in advance and passed through the refrigerant piping system. Further, after being bound by the binding band 26, it may be fixed to the fireproof wall by the tapping screw 24. 3 (d) to 3 (g), only the bottom plate support fitting 12 and the like arranged on one side (front side) are shown for the sake of clarity.

本発明の脱落防止装置20および脱落防止方法では、ラス網22の外周が耐火壁に固定され、ラス網22の開口22aの周囲が冷媒配管系に結束バンド26で結束されている。したがって、冷媒管が伸縮したとしても、ラス網22自体に伸縮性があり、かつ、結束バンド26で結束されたラス網22の部分が冷媒管の伸縮にある程度追従するので、耐火キャップ18の脱落を効果的に防止することができる。   In the dropout prevention device 20 and the dropout prevention method of the present invention, the outer periphery of the lath net 22 is fixed to a fireproof wall, and the periphery of the opening 22a of the lath net 22 is bound to the refrigerant piping system by a binding band 26. Therefore, even if the refrigerant pipe expands and contracts, the lath net 22 itself is elastic and the portion of the lath net 22 bound by the binding band 26 follows the expansion and contraction of the refrigerant pipe to some extent. Can be effectively prevented.

本発明は、以上の発明の実施の形態に限定されることなく、特許請求の範囲に記載された発明の範囲内で、種々の変更が可能であり、それらも本発明の範囲内に包含されるものであることはいうまでもない。   The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

例えば、前記実施形態では、天井隠蔽側にのみ脱落防止装置20が配置されているが、必要に応じて、露出側にも脱落防止装置20を配置してもよい。また、図示されている冷媒配管系の種類や本数、ラス網22の形状などは、単なる例示的なものにすぎない。   For example, in the embodiment, the dropout prevention device 20 is arranged only on the ceiling concealment side, but the dropout prevention device 20 may be arranged on the exposure side as necessary. Also, the type and number of refrigerant piping systems shown, the shape of the lath net 22 and the like are merely illustrative.

12 底板支持金具
12′底板アダプター
14 タッピングビス
16 熱膨張性耐熱シール材
18 耐火キャップ
20 脱落防止装置
22 ラス網
24 タッピングビス
26 結束バンド
12 bottom plate support bracket 12 'bottom plate adapter 14 tapping screw 16 heat-expandable heat-resistant sealing material 18 fireproof cap 20 drop-off prevention device 22 lath net 24 tapping screw 26 binding band

Claims (8)

冷媒配管系の防火区画貫通部に設置される前記貫通部に貫装される冷媒配管系の外周に熱膨張性シールを充填して前記貫通部の端面を耐火キャップで閉止する耐火キャップ式認定工法の耐火キャップの脱落を防止する装置であって、
前記貫通部の一方の側又は両方の側に取り付けられた耐火キャップを被覆するように配置され、前記冷媒配管系が通過する開口が中央に設けられたラス網を備え、
前記ラス網の外周が、タッピングビスによって前記貫通部の周囲の耐火性躯体に固定され、前記ラス網の前記開口の周囲部分が、結束バンドによって前記冷媒配管系に結束されていることを特徴とする装置。
Installed in firestop penetration portion of the refrigerant piping system, the penetrating portion refractory capped certification for closing fireproof cap end face of the through portion is filled with a thermally expandable sealing the outer periphery of the refrigerant piping system to be fitted through the A device that prevents the fire cap of the construction method from falling off,
It is arranged so as to cover a fireproof cap attached to one side or both sides of the penetrating part, and comprises a lath net provided with an opening through which the refrigerant piping system passes in the center,
An outer periphery of the lath net is fixed to a fireproof casing around the through portion by a tapping screw, and a peripheral portion of the opening of the lath net is bound to the refrigerant piping system by a binding band. Device to do.
請求項1に記載された耐火キャップの脱落を防止する装置であって、
さらに前記貫通部を貫装される冷媒配管系の外周に充填される熱膨張性シールを、防火区画躯体の厚み中央側から支持する底板支持金具を備え、該底板支持金具は前記貫通部端部に固定されていることを特徴とする耐火キャップの脱落を防止する装置。
An apparatus for preventing a fire cap from falling off according to claim 1,
Furthermore, a bottom plate support bracket is provided for supporting a thermally expandable seal filled in the outer periphery of the refrigerant piping system penetrating the through portion from the thickness center side of the fire protection compartment housing, and the bottom plate support bracket is provided at the end of the through portion A device that prevents the fire-resistant cap from falling off.
請求項1又は2に記載された耐火キャップの脱落を防止する装置であって、
前記防火区画と耐火性躯体は壁であることを特徴とする耐火キャップの脱落を防止する装置。
An apparatus for preventing the fireproof cap from falling off according to claim 1 or 2,
The fireproof cap and the fireproof housing are walls, and the fireproof cap is prevented from falling off.
請求項1又は2に記載された耐火キャップの脱落を防止する装置であって、
前記防火区画と耐火性躯体は床であることを特徴とする耐火キャップの脱落を防止する装置。
An apparatus for preventing the fireproof cap from falling off according to claim 1 or 2,
The fireproof cap and the fireproof enclosure are floors, and the fireproof cap is prevented from falling off.
冷媒配管系の防火区画貫通部に設置される、前記貫通部に貫装される冷媒配管系の外周に熱膨張性シールを充填して前記貫通部の端面を耐火キャップで閉止する耐火キャップ式認定工法の耐火キャップの脱落を防止する方法であって、
前記貫通部の一方の側又は両方の側に取り付けられた耐火キャップを被覆し、中央に設けられた開口に前記冷媒配管系を通すようにラス網を配置し、
前記ラス網の外周を、タッピングビスによって前記貫通部の周囲の耐火性躯体に固定し、前記ラス網の前記開口の周囲部分を、結束バンドによって前記冷媒配管系に結束することを特徴とする方法。
Fireproof cap-type certification that is installed in the fire prevention compartment penetration part of the refrigerant piping system, fills the outer periphery of the refrigerant piping system that penetrates the penetration part with a thermally expandable seal, and closes the end face of the penetration part with a fireproof cap A method to prevent the fire cap of the construction method from falling off,
Cover a fireproof cap attached to one side or both sides of the penetrating portion, and arrange a lath net to pass the refrigerant piping system through an opening provided in the center,
How the outer periphery of the lath, and fixed to the refractory precursor around the through portion by tapping screw, the peripheral portion of the opening of the lath, characterized by binding to the refrigerant piping system by binding bands .
請求項5に記載された耐火キャップの脱落を防止する方法であって、
さらに前記貫通部を貫装される冷媒配管系の外周に充填される熱膨張性シールを、防火区画躯体の厚み中央側から支持する底板支持金具を備え、該底板支持金具は前記貫通部端部に固定されていることを特徴とする耐火キャップの脱落を防止する方法。
A method for preventing the fireproof cap from falling off according to claim 5,
Furthermore, a bottom plate support bracket is provided for supporting a thermally expandable seal filled in the outer periphery of the refrigerant piping system penetrating the through portion from the thickness center side of the fire protection compartment housing, and the bottom plate support bracket is provided at the end of the through portion A method for preventing a fire cap from falling off, characterized by being fixed to
請求項5又は6に記載された耐火キャップの脱落を防止する方法であって、
前記防火区画と耐火性躯体は壁であることを特徴とする耐火キャップの脱落を防止する方法。
A method for preventing the fireproof cap from falling off according to claim 5 or 6,
The fireproof cap and fireproof housing are walls, and the fireproof cap is prevented from falling off.
請求項5又は6に記載された耐火キャップの脱落を防止する方法であって、
前記防火区画と耐火性躯体は床であることを特徴とする耐火キャップの脱落を防止する方法。
A method for preventing the fireproof cap from falling off according to claim 5 or 6,
The fireproof cap and fireproof enclosure are floors, and the fireproof cap is prevented from falling off.
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