JP2006234188A - Expandable flexible duct for air conditioner - Google Patents

Expandable flexible duct for air conditioner Download PDF

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JP2006234188A
JP2006234188A JP2005045056A JP2005045056A JP2006234188A JP 2006234188 A JP2006234188 A JP 2006234188A JP 2005045056 A JP2005045056 A JP 2005045056A JP 2005045056 A JP2005045056 A JP 2005045056A JP 2006234188 A JP2006234188 A JP 2006234188A
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sheet
base film
reinforcing member
layer
flexible duct
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JP4783034B2 (en
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Minoru Tamura
稔 田村
Keigo Sasamoto
啓吾 笹本
Katsuya Ihara
克也 伊原
Daisuke Yamanaka
大輔 山中
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Shin Nippon Air Technologies Co Ltd
Fujimori Sangyo Co Ltd
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Shin Nippon Air Technologies Co Ltd
Fujimori Sangyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an expandable flexible duct for air conditioner having contraction and expansion properties, superior handling property and good heat resistance. <P>SOLUTION: Directly to the outer face of a tube body 2 which is formed in a tubular shape by a flexible base material film or sheet 10 having a metal foil layer and a synthetic resin layer, a nonflammable reinforcing member 30 is fixed which is spirally formed to hold the pipe body 2 in the tubular shape. The pipe body 2 and the reinforcing member 30 are integrated with each other. An inorganic fiber layer can be used instead of the metal foil layer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、建造物の空調設備に用いられる伸縮性フレキシブルダクトに関する。   The present invention relates to a stretchable flexible duct used for air conditioning equipment in buildings.

建造物の空調設備に用いられる伸縮性フレキシブルダクトとして、（イ）プラスチック製のフレキシブルダクト、（ロ）波形にロールホーミングした金属薄板を、螺旋状に巻回して筒状に形成したダクトが知られている。これらのダクトは、輸送、運搬時には縮めた状態とし、施工時に伸ばしたり、屈曲して使用できる利点がある。
しかし、（イ）のプラスチック製のフレキシブルダクトは、プラスチック製のため、熱に弱く、不燃性が得られないという問題がある。
（ロ）のダクトは、ややもすると、ダクトを伸ばしたり屈曲したりするとき、端縁の接合部分（ハゼ部分）に力がかかって該部分が外れてしまい、破損することがある。特許文献１には、このような不都合を考慮し、フレキシブルダクトを折り曲げても合わせ目が外れたりしないような曲げに強いものにするため、波形にロールホーミングした金属薄板を、螺旋状に巻回して筒状に形成した空調設備に使用するフレキシブルダクトにおいて、螺旋状に巻回した金属薄板の合わせ目を固着樹脂層を介在させてシームしたことを特徴とするフレキシブルダクトが記載されている。しかし、縮めた状態のダクトを伸ばす際、相当の力が必要であるため、取扱が容易とはいえず、また、重量が重いという問題がある。 As stretchable flexible ducts used for building air conditioning equipment, (i) plastic flexible ducts, (b) ducts formed by winding spirally wound metal thin plates into a cylindrical shape are known. ing. These ducts have an advantage that they can be used in a contracted state during transportation and transportation and can be extended or bent during construction.
However, since the flexible duct made of plastic (A) is made of plastic, it has a problem that it is vulnerable to heat and incombustibility cannot be obtained.
If the duct of (b) is somewhat stretched or bent, a force may be applied to the joining portion (slot portion) of the end edge and the portion may be detached and damaged. In Patent Document 1, in consideration of such inconvenience, a thin metal plate roll-homed into a corrugated shape is wound spirally in order to make the flexible duct strong against bending so that the joint does not come off even when the flexible duct is bent. In a flexible duct used for air conditioning equipment formed in a cylindrical shape, a flexible duct is described in which a seam of a thin metal plate wound spirally is seamed with an adhesive resin layer interposed. However, when a duct in a contracted state is extended, a considerable force is required, so that it is not easy to handle and there is a problem that the weight is heavy.

特開平６−３１７３４７号公報JP-A-6-317347

本発明は、上記のような従来技術における不都合を考慮してなされたものであり、伸縮性を有し、取扱性に優れるとともに、良好な耐熱性を有する空調用伸縮性フレキシブルダクトを提供することを目的とする。   The present invention has been made in consideration of the disadvantages in the prior art as described above, and provides a stretchable flexible duct for air conditioning having stretchability, excellent handling properties, and good heat resistance. With the goal.

(1) 請求項１に係るダクトは、金属箔層と合成樹脂層とを備えた可撓性を有する基材フィルム又はシートによってチューブ状に形成された管本体の外面に、
前記管本体のチューブ形状を保持するよう螺旋状に形成された不燃性の補強部材が直接に固定され、
前記管本体と前記補強部材とが一体化されてなる空調用伸縮性フレキシブルダクトである。
(2) 請求項２に係るダクトは、請求項１に記載の空調用伸縮性フレキシブルダクトにおいて、金属箔層に代えて無機繊維層を備えた、空調用伸縮性フレキシブルダクトである。
本発明における好ましい態様は次のとおりである。
(3) 金属箔層の厚さが０．０１５〜０．１ｍｍ、合成樹脂層の総厚さが０．０１５〜０．５ｍｍである。
(4) 無機繊維層の厚さが０．１〜８ｍｍ、合成樹脂層の総厚さが０．０１５〜０．５ｍｍである。
(5) 上記(1) 又は(3) の基材フィルム又はシートに繊維材層を含む。
(6) 前記合成樹脂層その他の有機化合物の総質量が１８０ｇ／ｍ2 以下であって、かつ前記基材フィルム又はシートの総厚さは９ｍｍ以下である。
(7) 前記補強部材は、ほぼ断面Ｃ字状の金属製連続性薄板により形成され、
前記管本体は、所定幅の基材フィルム又はシートの縁部分が重なり合うように螺旋状に巻き回されて形成され、この重なり合う部分において、前記補強部材のＣ字部分内に基材フィルム又はシートが挟み込まれるとともに、さらに該基材フィルム又はシートの内面側から前記補強部材のＣ字部分内に線部材が挿入されている。
(8) 前記補強部材は、ほぼ断面Ｃ字状の金属製連続性薄板により形成され、
前記管本体は、全体として、所定幅の基材フィルム又はシートの縁部分が重なり合うように巻き回されて形成され、かつ
所定幅の基材フィルム又はシートの一方の縁部分が線部材をくるんで外面に折り返され、折り返し部分を形成しており、この折り返し部分の上に、基材フィルム又はシートの他方の縁部分が重ね合わせられて、螺旋状に巻き回されており、縁部分が重ね合わせられた状態で、基材フィルム又はシートと線部材とが、前記補強部材のＣ字部分内に挟み込まれている。 (1) The duct according to claim 1 is provided on the outer surface of the tube body formed into a tube shape by a flexible base film or sheet having a metal foil layer and a synthetic resin layer.
A nonflammable reinforcing member formed in a spiral shape so as to hold the tube shape of the tube body is directly fixed,
It is a stretchable flexible duct for air conditioning in which the tube body and the reinforcing member are integrated.
(2) The duct according to claim 2 is the air-conditioning stretchable flexible duct according to claim 1, wherein the duct is provided with an inorganic fiber layer instead of the metal foil layer.
Preferred embodiments in the present invention are as follows.
(3) The thickness of the metal foil layer is 0.015 to 0.1 mm, and the total thickness of the synthetic resin layer is 0.015 to 0.5 mm.
(4) The inorganic fiber layer has a thickness of 0.1 to 8 mm, and the synthetic resin layer has a total thickness of 0.015 to 0.5 mm.
(5) A fiber material layer is included in the base film or sheet of (1) or (3) above.
(6) A total mass of the synthetic resin layer and other organic compounds is 180 g / m 2 or less, and a total thickness of the base film or sheet is 9 mm or less.
(7) The reinforcing member is formed of a metal continuous thin plate having a substantially C-shaped cross section,
The tube body is formed by being spirally wound so that edge portions of a base film or sheet having a predetermined width overlap, and in the overlapping portion, the base film or sheet is placed in the C-shaped portion of the reinforcing member. Further, the wire member is inserted into the C-shaped portion of the reinforcing member from the inner surface side of the base film or sheet.
(8) The reinforcing member is formed of a metal continuous thin plate having a substantially C-shaped cross section,
The tube body as a whole is formed by being wound so that the edge portions of a base film or sheet having a predetermined width overlap each other, and one edge portion of the base film or sheet having a predetermined width wraps a wire member. It is folded back to the outer surface to form a folded portion, and the other edge portion of the base film or sheet is overlapped on the folded portion and wound spirally, and the edge portion is overlapped. In this state, the base film or sheet and the wire member are sandwiched in the C-shaped portion of the reinforcing member.

(1) 請求項１に係るダクトは、金属箔層と合成樹脂層とを備えた可撓性を有する基材フィルム又はシートによってチューブ状に形成された管本体の外面に、前記管本体のチューブ形状を保持するよう螺旋状に形成された不燃性の補強部材が直接に固定され、前記管本体と前記補強部材とが一体化されてなるものであり、軽量で良好な伸縮性及び屈曲性を有し、輸送、運搬がし易く、取扱性及び施工性に優れるとともに、良好な耐熱性を有する。また、金属箔層を備えているため、強い内圧に耐え得る利点を有する。
(2) 請求項２に係るダクトは、前記金属箔層に代えて無機繊維層を備えてなるものであり、軽量で良好な伸縮性及び屈曲性を有し、輸送、運搬がし易く、取扱性及び施工性に優れるとともに、良好な耐熱性を有する。また、無機繊維層を備えているため、丈夫であり、保温性を付与することも可能である。
(3) 金属箔層の厚さが０．０１５〜０．１ｍｍ、合成樹脂層の総厚さが０．０１５〜０．５ｍｍである構成により、全体として肉薄ながら強度及び伸縮性が確実に得られるとともに、耐熱性に優れ、不燃性ダクトとしての使用が可能である。
(4) 無機繊維層の厚さが０．１〜８ｍｍ、合成樹脂層の総厚さが０．０１５〜０．５ｍｍである構成により、全体として肉薄ながら強度及び伸縮性が確実に得られるとともに、耐熱性に優れ、不燃性ダクトとしての使用が可能である。
(5) 上記(1) 又は(3) の基材フィルム又はシートに繊維材層を含む構成により、より強度を向上させることができる。
(6) 前記合成樹脂層その他の有機化合物の総質量が１８０ｇ／ｍ2 以下であって、かつ前記基材フィルム又はシートの総厚さは９ｍｍ以下であるものとすることにより、きわめて良好な不燃性が得られ、かつ肉薄で強度及び伸縮性が確実に得られる。
(7) 前記補強部材は、ほぼ断面Ｃ字状の金属製連続性薄板により形成され、前記管本体は、所定幅の基材フィルム又はシートの縁部分が重なり合うように螺旋状に巻き回されて形成され、この重なり合う部分において、前記補強部材のＣ字部分内に基材フィルム又はシートが挟み込まれるとともに、さらに該基材フィルム又はシートの内面側から前記補強部材のＣ字部分内に線部材が挿入されている構成により、簡単かつ確実に、また経済的にダクトを製造することができる。そして、接着剤を用いることなく、金属製連続性薄板により形成された補強部材が基材フィルム又はシートに確実に固定されるため、良好な不燃性を得ることができる。
(8) 前記補強部材は、ほぼ断面Ｃ字状の金属製連続性薄板により形成され、前記管本体は、全体として、所定幅の基材フィルム又はシートの縁部分が重なり合うように巻き回されて形成され、かつ所定幅の基材フィルム又はシートの一方の縁部分が線部材をくるんで外面に折り返され、折り返し部分を形成しており、この折り返し部分の上に、基材フィルム又はシートの他方の縁部分が重ね合わせられて、螺旋状に巻き回されており、縁部分が重ね合わせられた状態で、基材フィルム又はシートと線部材とが、前記補強部材のＣ字部分内に挟み込まれているため、簡単かつ確実に、また経済的にダクトを製造することができる。そして、接着剤を用いることなく、金属製連続性薄板により形成された補強部材が基材フィルム又はシートに確実に固定されるため、良好な不燃性を得ることができる。加えて、管本体の内面に突出片がないため、風切り音やばたつきによる音の発生もなく、かつ空気抵抗も小さくすることができるという利点を有する。 (1) The duct according to claim 1 is provided on the outer surface of the tube body formed of a flexible base film or sheet having a metal foil layer and a synthetic resin layer on the outer surface of the tube body. A nonflammable reinforcing member formed in a spiral shape so as to maintain the shape is directly fixed, and the tube body and the reinforcing member are integrated, and is lightweight and has good stretchability and flexibility. It is easy to transport and transport, has excellent handleability and workability, and has good heat resistance. Moreover, since the metal foil layer is provided, it has an advantage that it can withstand strong internal pressure.
(2) The duct according to claim 2 is provided with an inorganic fiber layer instead of the metal foil layer, is lightweight, has good stretchability and flexibility, is easy to transport and transport, and is handled In addition to excellent heat resistance and workability, it has good heat resistance. In addition, since the inorganic fiber layer is provided, it is strong and can impart heat retention.
(3) With the configuration in which the thickness of the metal foil layer is 0.015 to 0.1 mm and the total thickness of the synthetic resin layer is 0.015 to 0.5 mm, strength and stretchability can be reliably obtained while being thin as a whole. In addition, it has excellent heat resistance and can be used as a nonflammable duct.
(4) With the structure in which the inorganic fiber layer has a thickness of 0.1 to 8 mm and the synthetic resin layer has a total thickness of 0.015 to 0.5 mm, strength and stretchability can be reliably obtained while being thin overall It has excellent heat resistance and can be used as a nonflammable duct.
(5) The strength can be further improved by including the fibrous material layer in the base film or sheet of the above (1) or (3).
(6) The total mass of the synthetic resin layer and other organic compounds is 180 g / m 2 or less, and the total thickness of the base film or sheet is 9 mm or less, so that a very good nonflammability Property, and is thin and strength and stretchability can be reliably obtained.
(7) The reinforcing member is formed of a metal continuous thin plate having a substantially C-shaped cross section, and the tube main body is spirally wound so that edge portions of the base film or sheet having a predetermined width overlap each other. In this overlapping portion, a base film or sheet is sandwiched in the C-shaped portion of the reinforcing member, and a line member is further inserted into the C-shaped portion of the reinforcing member from the inner surface side of the base film or sheet. Due to the inserted configuration, the duct can be manufactured easily, reliably and economically. And since the reinforcement member formed with the metal continuous thin plate is reliably fixed to a base film or a sheet | seat, without using an adhesive agent, favorable nonflammability can be acquired.
(8) The reinforcing member is formed of a metal continuous thin plate having a substantially C-shaped cross section, and the tube body as a whole is wound so that edge portions of a base film or sheet having a predetermined width overlap each other. One edge portion of the base film or sheet having a predetermined width is wrapped around the wire member and folded back to the outer surface to form a folded portion, and the other of the base film or sheet is formed on the folded portion. The base film or sheet and the wire member are sandwiched in the C-shaped portion of the reinforcing member in a state where the edge portions are overlapped and spirally wound, and the edge portions are overlapped. Therefore, the duct can be manufactured easily, reliably and economically. And since the reinforcement member formed with the metal continuous thin plate is reliably fixed to a base film or a sheet | seat, without using an adhesive agent, favorable nonflammability can be acquired. In addition, since there is no protruding piece on the inner surface of the tube main body, there are advantages that there is no generation of wind noise or fluttering, and air resistance can be reduced.

本発明の実施例を挙げ、図面を参照して説明するが、本発明は以下の形態に限定されるものではなく、本発明の要旨の範囲で種々の変形、付加等が可能である。なお、各図において同じ要素には同じ符号を用い、適宜その説明を省略する場合がある。   Examples of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments, and various modifications and additions are possible within the scope of the present invention. Note that the same reference numerals are used for the same elements in the drawings, and description thereof may be omitted as appropriate.

図１は実施例の空調用伸縮性フレキシブルダクト１を模式的に示す斜視図、図２は基材フィルム又はシート１０の構成例を示す断面図、図３は実施例の空調用伸縮性フレキシブルダクト１の拡大断面（端面）図である。   FIG. 1 is a perspective view schematically showing a stretchable flexible duct 1 for air conditioning according to an embodiment, FIG. 2 is a cross-sectional view showing a configuration example of a base film or sheet 10, and FIG. 3 is a stretchable flexible duct for air conditioning according to the embodiment. 1 is an enlarged sectional view (end face) of 1. FIG.

本発明に係る空調用伸縮性フレキシブルダクト１を構成する管本体２は、金属箔層又は無機繊維層と、合成樹脂層とを備えた、可撓性を有する基材フィルム又はシート１０によってチューブ状に形成されている。管本体２は、空気調和・換気のために空気を通す管路を備えてなるものであり、その断面形状は、通常円形であるが、楕円形、矩形等に形成することも可能である。
基材フィルム又はシート１０の構成例を図２に示す。
図２（ａ）は金属箔層１２と合成樹脂層１１の２層で構成されている例、図２（ｂ）は無機繊維層１３と合成樹脂層１１の２層で構成されている例、図２（ｃ）は金属箔層１２とその両側に積層された合成樹脂層１１，１１の２層の計３層で構成されている例、図２（ｄ）は金属箔層１２と合成樹脂層１１とさらに繊維材層１４とで構成されている例を示す。図２（ａ）（ｂ）（ｄ）の各場合において、合成樹脂層１１を管本体２の内面、外面をいずれの側とするかは任意である。図２（ｅ）は図２（ｄ）の変形例で、金属箔層１２と合成樹脂層１１ａ，１１ｃ（，１１ｂ）と繊維材層１４とで構成されている例を示す。上記各層を総合した基材フィルム又はシートの総厚さは９ｍｍ以下とすることが好ましい。 The tube body 2 constituting the stretchable flexible duct 1 for air conditioning according to the present invention has a tube shape made of a flexible base film or sheet 10 having a metal foil layer or an inorganic fiber layer and a synthetic resin layer. Is formed. The pipe body 2 is provided with a pipe line through which air passes for air conditioning and ventilation, and its cross-sectional shape is usually circular, but it can also be formed in an elliptical shape, a rectangular shape, or the like.
A configuration example of the base film or sheet 10 is shown in FIG.
2A is an example composed of two layers of a metal foil layer 12 and a synthetic resin layer 11, and FIG. 2B is an example composed of two layers of an inorganic fiber layer 13 and a synthetic resin layer 11. FIG. 2C shows an example in which the metal foil layer 12 and the synthetic resin layers 11 and 11 laminated on both sides thereof are composed of a total of three layers, and FIG. 2D shows the metal foil layer 12 and the synthetic resin. The example comprised by the layer 11 and the fiber material layer 14 is shown. In each case of FIGS. 2A, 2B, and 2D, it is arbitrary whether the synthetic resin layer 11 is on the inner surface and the outer surface of the tube main body 2. FIG. 2E is a modification of FIG. 2D, and shows an example in which the metal foil layer 12, the synthetic resin layers 11a, 11c (, 11b), and the fiber material layer 14 are configured. The total thickness of the base film or sheet obtained by combining the above layers is preferably 9 mm or less.

合成樹脂層１１は、ポリエチレン、ポリプロピレン等のポリオレフィン系樹脂、ＰＥＴ、ＰＶＣ等の熱可塑性樹脂により形成される。合成樹脂層は単一層又は複数層に形成することができる。合成樹脂層１１の総厚さは、０．０１５〜０．５ｍｍが好ましい。合成樹脂層１１が単一層の場合、０．０１５〜０．１８ｍｍ、合成樹脂層１１が２層以上ある場合は各層は０．０１５〜０．０８ｍｍの範囲が好ましい。合成樹脂層の厚さが薄すぎると保形性が不良となる。また厚すぎると耐熱性が低下する。
金属箔層１２は、アルミニウム箔、鉄箔、ステンレススチール箔等により形成される。アルミニウム箔層が加工性、経済性の面で好ましい。アルミニウム箔層による場合、その厚さは０．０１５〜０．１ｍｍの範囲が好ましい。０．０１５ｍｍ以上の厚さを有することにより、十分な耐熱性が得られる。これより薄いと、耐熱性が不十分となり、また厚すぎると伸縮性が不良となりやすい。鉄箔、ステンレススチール箔による場合、０．０１〜０．０５ｍｍの範囲が好ましい。 The synthetic resin layer 11 is formed of a polyolefin resin such as polyethylene or polypropylene, or a thermoplastic resin such as PET or PVC. The synthetic resin layer can be formed in a single layer or a plurality of layers. The total thickness of the synthetic resin layer 11 is preferably 0.015 to 0.5 mm. When the synthetic resin layer 11 is a single layer, the range is preferably 0.015 to 0.18 mm, and when there are two or more synthetic resin layers 11, each layer is preferably within a range of 0.015 to 0.08 mm. If the thickness of the synthetic resin layer is too thin, the shape retention becomes poor. On the other hand, if it is too thick, the heat resistance is lowered.
The metal foil layer 12 is formed of aluminum foil, iron foil, stainless steel foil, or the like. An aluminum foil layer is preferable in terms of workability and economy. When using an aluminum foil layer, the thickness is preferably in the range of 0.015 to 0.1 mm. Sufficient heat resistance is obtained by having a thickness of 0.015 mm or more. If it is thinner than this, the heat resistance is insufficient, and if it is too thick, the stretchability tends to be poor. In the case of using iron foil or stainless steel foil, a range of 0.01 to 0.05 mm is preferable.

無機繊維層１３は、ガラス繊維クロス、ガラス繊維糸、ロックウール等の無機繊維材により構成され、その厚さは、好ましくは０．１〜８ｍｍの範囲とする。これより薄いと、耐熱性が低下し、また厚すぎると、伸縮性が不良となりやすく、また後述する補強部材３０の固定がしにくくなる。   The inorganic fiber layer 13 is made of an inorganic fiber material such as glass fiber cloth, glass fiber yarn, rock wool, etc., and its thickness is preferably in the range of 0.1 to 8 mm. If it is thinner than this, the heat resistance is lowered, and if it is too thick, the stretchability tends to be poor, and it becomes difficult to fix the reinforcing member 30 described later.

可撓性を有する基材フィルム又はシート１０は、例えば、金属箔層１２又は無機繊維層１３の片面に、合成樹脂層１１を積層することにより構成されるが、図２（ｃ）に示すように、金属箔層１２（又はこれに代えて無機繊維層１３としてもよい。）の両面に合成樹脂層１１，１１を積層することによって構成することもできる。
金属箔層１２又は無機繊維層１３と、合成樹脂層１１との積層は、通常、各層同士を貼着して積層するが、必ずしも各層同士が貼り付けられていなくてもよい。 The flexible base film or sheet 10 is configured by, for example, laminating the synthetic resin layer 11 on one side of the metal foil layer 12 or the inorganic fiber layer 13, as shown in FIG. Alternatively, the synthetic resin layers 11 and 11 may be laminated on both surfaces of the metal foil layer 12 (or alternatively, the inorganic fiber layer 13 may be used instead).
Lamination of the metal foil layer 12 or the inorganic fiber layer 13 and the synthetic resin layer 11 is usually performed by adhering the layers to each other, but the layers do not necessarily have to be adhered to each other.

図２（ｄ）に示す、金属箔層１２と合成樹脂層１１とさらに付加的に繊維材層１４とで構成されている場合、繊維材層１４は、例えば合成樹脂層１１を金属箔層１２に塗布又は貼りつけにより積層する際に介在させることで設けることができる。
この繊維材層１４は、ガラス繊維クロス、ガラス繊維糸、合成樹脂織布・不織布その他の繊維（好ましくは無機繊維）により形成され、繊維材層１４の厚さは、好ましくは０．１〜８ｍｍとする。
図２（ｄ）の変形例である図２（ｅ）に示す基材フィルム又はシート１０は、金属箔層１２と合成樹脂層１１ａ，１１ｃ（，１１ｂ）と繊維材層１４とで構成されている。この例では、最外面から合成樹脂（好ましくはポリエチレン）層１１ａ、金属箔（好ましくはアルミニウム箔）層１２、繊維材層（好ましくは目の粗い、網目状の薄いガラス繊維層）１４、合成樹脂（好ましくはポリエステル）層１１ｃで形成されている。繊維材層１４と合成樹脂層１１ｃとの間には接着層としての合成樹脂（好ましくはポリエチレン）層１１ｂが介在している。最外層の合成樹脂層１１ａは、金属箔層１２を損傷等から保護する。繊維材層１４は、補強用のもので引裂強度等を向上させる。最内層の合成樹脂層１１ｃは、繊維材層１４を保護し、ダクトの流通路面を平滑にする。 In the case where the metal foil layer 12, the synthetic resin layer 11, and the fiber material layer 14 are additionally formed as illustrated in FIG. 2D, the fiber material layer 14 includes, for example, the synthetic resin layer 11 and the metal foil layer 12. It can provide by interposing at the time of laminating | stacking by application | coating or sticking.
The fiber material layer 14 is formed of glass fiber cloth, glass fiber yarn, synthetic resin woven fabric / nonwoven fabric and other fibers (preferably inorganic fibers), and the thickness of the fiber material layer 14 is preferably 0.1 to 8 mm. And
A base film or sheet 10 shown in FIG. 2E, which is a modification of FIG. 2D, is composed of a metal foil layer 12, synthetic resin layers 11a, 11c (, 11b), and a fiber material layer 14. Yes. In this example, from the outermost surface, a synthetic resin (preferably polyethylene) layer 11a, a metal foil (preferably aluminum foil) layer 12, a fiber material layer (preferably a coarse, mesh-like thin glass fiber layer) 14, a synthetic resin The (preferably polyester) layer 11c is formed. A synthetic resin (preferably polyethylene) layer 11b as an adhesive layer is interposed between the fiber material layer 14 and the synthetic resin layer 11c. The outermost synthetic resin layer 11a protects the metal foil layer 12 from damage and the like. The fiber material layer 14 is for reinforcement and improves tear strength and the like. The innermost synthetic resin layer 11c protects the fiber material layer 14 and smoothes the flow path surface of the duct.

本発明に係るダクトは、前記した可撓性を有する基材フィルム又はシート１０を用いてチューブ状に形成された管本体２の外面に、該管本体２のチューブ形状を保持するよう螺旋状に形成された不燃性の補強部材３０が直接に固定され、管本体２と補強部材３０とが一体化された構成を備えている。つまり、補強部材３０が基材フィルム又はシート１０の外面側に位置して固定され、補強部材３０と管本体２とが一体化している。補強部材３０は、螺旋状に形成されており、ダクトは全体として軸方向の伸縮及び屈曲が可能であり、基材フィルム又はシート１０と一体化した状態で、ダクトの伸縮が行われる。
本発明に係るダクトは、前記した従来公知の波形の金属薄板による金属製フレキシブルダクトに代わる不燃性のダクト（特に排気用ダクト）として好適に用いられ、また、基材フィルム又はシート１０の外側に断熱保温層を巻き回して設けるものではなく、螺旋状の鋼線の外側にグラスウール等の肉厚な断熱保温材を巻いた従来公知のフレキシブルダクトとも構成が大きく異なり、圧縮率も高く、伸縮性、屈曲性、取扱性等もより優れるものである。 The duct according to the present invention is formed in a spiral shape so as to hold the tube shape of the tube body 2 on the outer surface of the tube body 2 formed into a tube shape using the base film or sheet 10 having flexibility described above. The formed incombustible reinforcing member 30 is directly fixed, and the tube main body 2 and the reinforcing member 30 are integrated. That is, the reinforcing member 30 is positioned and fixed on the outer surface side of the base film or sheet 10, and the reinforcing member 30 and the pipe body 2 are integrated. The reinforcing member 30 is formed in a spiral shape, and the duct can be expanded and contracted in the axial direction as a whole, and the duct is expanded and contracted in an integrated state with the base film or the sheet 10.
The duct according to the present invention is suitably used as a non-combustible duct (particularly an exhaust duct) in place of the above-described conventionally known metal corrugated metal corrugated metal thin plate, and on the outside of the base film or sheet 10. The insulation heat insulation layer is not provided by wrapping, but the structure is also greatly different from the conventional flexible duct in which a thick heat insulation heat insulation material such as glass wool is wound around the outside of the spiral steel wire, the compression ratio is also high, and the elasticity Further, the flexibility, the handleability and the like are also excellent.

図３に、補強部材３０の固定例を示す。
補強部材３０は、好ましくは、ほぼ断面Ｃ字状の、亜鉛めっき鋼板、鉄等の金属製連続性薄板により形成され、このＣ字部分内に基材フィルム又はシートが挟み込まれることによって、基材フィルム又はシート１０に直接に固定され、一体化される。つまり、補強部材３０は、管本体２のチューブ形状を保持するとともに、そのＣ字部分が基材フィルム又はシート１０への取付部分として機能している。補強部材３０は、例えば厚さ０．３〜１．５ｍｍ程度、幅４〜７ｍｍ程度に形成される。 FIG. 3 shows an example of fixing the reinforcing member 30.
The reinforcing member 30 is preferably formed of a continuous thin plate made of a metal such as a galvanized steel plate or iron having a substantially C-shaped cross section, and a base film or sheet is sandwiched in the C-shaped portion to thereby form a base material. It is directly fixed to the film or sheet 10 and integrated. That is, the reinforcing member 30 retains the tube shape of the tube body 2, and the C-shaped portion functions as an attachment portion to the base film or the sheet 10. The reinforcing member 30 is formed with a thickness of about 0.3 to 1.5 mm and a width of about 4 to 7 mm, for example.

そして、さらに好ましくは、図３に示すとおり、管本体２は、所定幅の基材フィルム又はシート１０の縁部分が重なり合うように螺旋状に巻き回されて形成され、この重なり合う部分において、補強部材３０のＣ字部分内に基材フィルム又はシート１０が挟み込まれるとともに、さらに該基材フィルム又はシート１０の内面側から補強部材３０のＣ字部分内に線部材２０が挿入されることにより、補強部材３０と基材フィルム又はシート１０とが一体化される。
線部材２０がＣ字部分内に挿入され、係止されることにより、補強部材３０が基材フィルム又はシート１０をしっかりと噛み、補強部材３０が基材フィルム又はシート１０から外れにくくなる。線部材２０は、通常、鉄線、亜鉛めっき鋼線等、弾性を有する金属材あるいはナイロンその他の合成樹脂材により構成される。その太さは、０．３〜１．５ｍｍ程度である。
補強部材３０の管本体２への固定方法は、所定幅の基材フィルム又はシート１０の縁部分を重なり合うように螺旋状に巻き回すとともに、この重なり合う部分の内面に、線部材２０を同様に螺旋状に位置させつつ、基材フィルム又はシート１０の重なり合う部分と線部材２０とを一緒に外側から包む状態で、断面Ｃ字状の補強部材３０を螺旋状に巻きつつＣ字部分の中に挟み込む。これにより、補強部材３０は、基材フィルム又はシート１０と一体化されて強固に固定される。 And more preferably, as shown in FIG. 3, the tube body 2 is formed by being spirally wound so that the edge portions of the base film or sheet 10 having a predetermined width are overlapped, and in this overlapping portion, the reinforcing member The base film or sheet 10 is sandwiched in the C-shaped portion of 30 and the line member 20 is inserted into the C-shaped portion of the reinforcing member 30 from the inner surface side of the base film or sheet 10 to reinforce. The member 30 and the base film or sheet 10 are integrated.
When the wire member 20 is inserted into the C-shaped portion and locked, the reinforcing member 30 firmly bites the base film or sheet 10 and the reinforcing member 30 is unlikely to come off the base film or sheet 10. The wire member 20 is usually made of an elastic metal material such as iron wire or galvanized steel wire, or nylon or other synthetic resin material. Its thickness is about 0.3 to 1.5 mm.
The reinforcing member 30 is fixed to the tube main body 2 by winding the edge portion of the base film or sheet 10 having a predetermined width in a spiral manner so that the wire member 20 is spirally wound on the inner surface of the overlapping portion. In the state where the overlapping part of the base film or sheet 10 and the wire member 20 are wrapped together from the outside, the reinforcing member 30 having a C-shaped cross section is spirally wound and sandwiched between the C-shaped parts. . Thereby, the reinforcing member 30 is integrated with the base film or sheet 10 and firmly fixed.

また、図３に示すものに限らず、図４に示すような形態を採ることもできる。図４に示す例では、管本体２は、全体として、所定幅の基材フィルム又はシート１０の縁部分を重なり合うように螺旋状に巻き回されて形成されてはいるが、所定幅の基材フィルム又はシート１０の一方の縁部分が線部材２０をくるんで外面に折り返され、折り返し部分１０ａを形成しており、この折り返し部分１０ａの上（外面）に、基材フィルム又はシート１０の他方の縁部分が重ね合わせられて、螺旋状に巻き回されており、縁部分が重ね合わせられた状態で、基材フィルム又はシート１０と線部材２０とが、補強部材３０のＣ字部分内に挟み込まれ、これにより補強部材３０と基材フィルム又はシート１０とが一体化されている。
図３に示すものは、所定幅の基材フィルム又はシート１０の縁部分が重なり合う部分において、内面側にある縁部分１０ｂが管本体の内側にヒレ状に突出するのに対し、図４に示すものは、このようなヒレ状の突出がないため、風切り音が生じたり、ヒレ状の縁部分が揺れてばたついて音が生じることがなく、空気抵抗も小さくすることができるという利点を有する。
図４に示す例における補強部材３０の管本体２への固定方法は、所定幅の基材フィルム又はシート１０の一方の縁部分に線部材２０を位置させて、この線部材２０をくるんで一方の縁部分を外面に折り返し、折り返し部分１０ａを形成する。そして、この折り返し部分１０ａの上（外面）に、基材フィルム又はシート１０の他方の縁部分を重ね合わせて螺旋状に巻き回しつつ、縁部分が重ね合わせられた状態で、重ね合わされた基材フィルム又はシート１０と線部材２０とを一緒に外側から包む状態で、断面Ｃ字状の補強部材３０を螺旋状に巻きつつＣ字部分の中に挟み込む。これにより、補強部材３０は、基材フィルム又はシート１０と一体化されて強固に固定される。 Moreover, it is not restricted to what is shown in FIG. 3, A form as shown in FIG. 4 can also be taken. In the example shown in FIG. 4, the tube body 2 as a whole is formed by being spirally wound so as to overlap the base film of the predetermined width or the edge portion of the sheet 10. One edge portion of the film or sheet 10 wraps around the line member 20 and is folded back to the outer surface to form a folded portion 10a. The other portion of the base film or sheet 10 is formed on the folded portion 10a (outer surface). The edge portions are overlapped and wound spirally, and the base film or sheet 10 and the wire member 20 are sandwiched in the C-shaped portion of the reinforcing member 30 with the edge portions overlapped. Thus, the reinforcing member 30 and the base film or sheet 10 are integrated.
In the portion shown in FIG. 3, the edge portion 10 b on the inner surface side protrudes in a fin shape inside the tube body in the portion where the edge portions of the base film or sheet 10 having a predetermined width overlap, as shown in FIG. 4. Since there are no fin-like protrusions, there is an advantage that wind noise is not generated, no sound is generated when the fin-like edge is shaken, and air resistance can be reduced. .
In the example shown in FIG. 4, the reinforcing member 30 is fixed to the pipe body 2 by placing the line member 20 on one edge portion of the base film or sheet 10 having a predetermined width and wrapping the line member 20. The edge portion is folded back to the outer surface to form a folded portion 10a. And the base material laminated | stacked in the state which the edge part was piled up on this folding | returning part 10a, the other edge part of the base film or the sheet | seat 10 being piled up and spirally wound. In a state where the film or sheet 10 and the wire member 20 are wrapped together from the outside, the reinforcing member 30 having a C-shaped section is sandwiched between the C-shaped portions while being spirally wound. Thereby, the reinforcing member 30 is integrated with the base film or sheet 10 and firmly fixed.

また、一つの好ましい態様として、上記のように補強部材３０を固定し、また、金属箔層１２をアルミニウム箔とし、その厚さを０．０１５〜０．１ｍｍの範囲とするとともに、合成樹脂層を請求項３に係る構成を備えたものとし、かつ合成樹脂層その他の有機化合物（紙、接着剤を含む）の総質量を１８０ｇ／ｍ2 以下とする。これにより、きわめて良好な不燃性が得られる。
該構成を備えた空調用伸縮性フレキシブルダクトについて、財団法人日本建築総合試験所の発熱性試験（該財団が制定した「防耐火性能試験・評価業務方法書」“4.10 不燃性能試験・評価方法”に従って実施）に供したところ、（イ）加熱開始後２０分間の総発熱量が、８ＭＪ／ｍ2 以下、（ロ）加熱開始後２０分間、防火上有害な裏面まで貫通する亀裂及び穴がない、（ハ）加熱開始後２０分間、最高発熱速度が、１０秒以上継続して２００ｋＷ／ｍ2 を超えない、という３要件を満たす結果が得られ、建築基準法上の不燃性試験の合格基準を満たしていることが確認された。 Moreover, as one preferable aspect, the reinforcing member 30 is fixed as described above, the metal foil layer 12 is made of aluminum foil, the thickness thereof is in the range of 0.015 to 0.1 mm, and the synthetic resin layer The total mass of the synthetic resin layer and other organic compounds (including paper and adhesive) is 180 g / m 2 or less. Thereby, very good nonflammability is obtained.
About the flexible flexible duct for air conditioning equipped with this configuration, the exothermic test of the Japan Building Research Institute (“Fireproof Performance Test / Evaluation Procedure Manual” “4.10 Nonflammability Performance Test / Evaluation Method” established by the Foundation) (B) The total calorific value for 20 minutes after the start of heating is 8 MJ / m 2 or less, and (b) 20 minutes after the start of heating, there are no cracks and holes penetrating to the rear side which is harmful for fire prevention. (C) 20 minutes after the start of heating, the maximum heat generation rate continues for 10 seconds or more, and the result satisfying the three requirements of not exceeding 200 kW / m 2 is obtained. It was confirmed that

実施例の空調用伸縮性フレキシブルダクト１を模式的に示す斜視図である。It is a perspective view which shows typically the elastic flexible duct 1 for an air conditioning of an Example. 基材フィルム又はシート１０の構成例を示す断面図である。2 is a cross-sectional view illustrating a configuration example of a base film or sheet 10. FIG. 実施例の空調用伸縮性フレキシブルダクト１の拡大断面図である。It is an expanded sectional view of the elastic flexible duct 1 for an air conditioning of an Example. 実施例の空調用伸縮性フレキシブルダクト１の拡大断面図である。It is an expanded sectional view of the elastic flexible duct 1 for an air conditioning of an Example.

符号の説明Explanation of symbols

１ 空調用伸縮性フレキシブルダクト
２ 管本体
１０ 基材フィルム又はシート
１１ 合成樹脂層
１２ 金属箔層
１３ 無機繊維層
１４ 繊維材層
２０ 線部材
３０ 補強部材 DESCRIPTION OF SYMBOLS 1 Stretchable flexible duct for air conditioning 2 Pipe body 10 Base film or sheet 11 Synthetic resin layer 12 Metal foil layer 13 Inorganic fiber layer 14 Fiber material layer 20 Wire member 30 Reinforcing member

Claims (8)

金属箔層と合成樹脂層とを備えた可撓性を有する基材フィルム又はシートによってチューブ状に形成された管本体の外面に、
前記管本体のチューブ形状を保持するよう螺旋状に形成された不燃性の補強部材が直接に固定され、
前記管本体と前記補強部材とが一体化されてなる空調用伸縮性フレキシブルダクト。 On the outer surface of the tube body formed into a tube shape by a flexible base film or sheet having a metal foil layer and a synthetic resin layer,
A nonflammable reinforcing member formed in a spiral shape so as to hold the tube shape of the tube body is directly fixed,
A stretchable flexible duct for air conditioning in which the tube main body and the reinforcing member are integrated. 請求項１に記載の空調用伸縮性フレキシブルダクトにおいて、金属箔層に代えて無機繊維層を備えた、空調用伸縮性フレキシブルダクト。   The stretchable flexible duct for air conditioning according to claim 1, comprising an inorganic fiber layer instead of the metal foil layer. 金属箔層の厚さが０．０１５〜０．１ｍｍ、合成樹脂層の総厚さが０．０１５〜０．５ｍｍである請求項１に記載の空調用伸縮性フレキシブルダクト。   The stretchable flexible duct for air conditioning according to claim 1, wherein the thickness of the metal foil layer is 0.015 to 0.1 mm, and the total thickness of the synthetic resin layer is 0.015 to 0.5 mm. 無機繊維層の厚さが０．１〜８ｍｍ、合成樹脂層の総厚さが０．０１５〜０．５ｍｍである請求項２に記載の空調用伸縮性フレキシブルダクト。   The stretchable flexible duct for air conditioning according to claim 2, wherein the inorganic fiber layer has a thickness of 0.1 to 8 mm, and the synthetic resin layer has a total thickness of 0.015 to 0.5 mm. 前記基材フィルム又はシートに繊維材層を含む請求項１又は３に記載の空調用伸縮性フレキシブルダクト。   The stretchable flexible duct for air conditioning according to claim 1 or 3, wherein the base film or sheet includes a fiber material layer. 前記合成樹脂層その他の有機化合物の総質量が１８０ｇ／ｍ2 以下であって、かつ前記基材フィルム又はシートの総厚さは９ｍｍ以下である請求項１〜５のいずれかに記載の空調用伸縮性フレキシブルダクト。 The total mass of the synthetic resin layer and other organic compounds is 180 g / m 2 or less, and the total thickness of the base film or sheet is 9 mm or less. Elastic flexible duct. 前記補強部材は、ほぼ断面Ｃ字状の金属製連続性薄板により形成され、
前記管本体は、所定幅の基材フィルム又はシートの縁部分が重なり合うように螺旋状に巻き回されて形成され、この重なり合う部分において、前記補強部材のＣ字部分内に基材フィルム又はシートが挟み込まれるとともに、さらに該基材フィルム又はシートの内面側から前記補強部材のＣ字部分内に線部材が挿入されている、請求項１〜６のいずれかに記載の空調用伸縮性フレキシブルダクト。 The reinforcing member is formed of a metal continuous thin plate having a substantially C-shaped cross section,
The tube body is formed by being spirally wound so that edge portions of a base film or sheet having a predetermined width overlap, and in the overlapping portion, the base film or sheet is placed in the C-shaped portion of the reinforcing member. The stretchable flexible duct for air conditioning according to any one of claims 1 to 6, wherein a wire member is inserted into the C-shaped portion of the reinforcing member from the inner surface side of the base film or sheet. 前記補強部材は、ほぼ断面Ｃ字状の金属製連続性薄板により形成され、
前記管本体は、全体として、所定幅の基材フィルム又はシートの縁部分が重なり合うように巻き回されて形成され、かつ
所定幅の基材フィルム又はシートの一方の縁部分が線部材をくるんで外面に折り返され、折り返し部分を形成しており、この折り返し部分の上に、基材フィルム又はシートの他方の縁部分が重ね合わせられて、螺旋状に巻き回されており、縁部分が重ね合わせられた状態で、基材フィルム又はシートと線部材とが、前記補強部材のＣ字部分内に挟み込まれている、請求項１〜６のいずれかに記載の空調用伸縮性フレキシブルダクト。 The reinforcing member is formed of a metal continuous thin plate having a substantially C-shaped cross section,
The tube body as a whole is formed by being wound so that the edge portions of a base film or sheet having a predetermined width overlap each other, and one edge portion of the base film or sheet having a predetermined width wraps a wire member. It is folded back to the outer surface to form a folded portion, and the other edge portion of the base film or sheet is overlapped on the folded portion and wound spirally, and the edge portion is overlapped. The stretchable flexible duct for air conditioning according to any one of claims 1 to 6, wherein the base film or sheet and the wire member are sandwiched in the C-shaped portion of the reinforcing member in a state where the base film or sheet is formed.
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JP2008202847A (en) * 2007-02-20 2008-09-04 Kurimoto Ltd Flat oval type flexible duct, its manufacturing method, molding method and molding device
JP2010167073A (en) * 2009-01-22 2010-08-05 Atsuo Nozaki Air contaminant removing apparatus
JP2011080512A (en) * 2009-10-06 2011-04-21 Tigers Polymer Corp Heat resistant duct
JP2011122615A (en) * 2009-12-08 2011-06-23 Kanaflex Corporation Heat-resistant duct hose
JP2011190988A (en) * 2010-03-15 2011-09-29 Tigers Polymer Corp Heat-resistant duct
KR101224807B1 (en) 2010-12-10 2013-01-21 윤주영 Method and nonflammable flexible hose for manufacturing an air conditioning used nonflammable flexible hose
JP2013160455A (en) * 2012-02-06 2013-08-19 Fujimori Sangyo Kk Sock duct
JP2015183975A (en) * 2014-03-26 2015-10-22 フジモリ産業株式会社 flexible duct
JP2019049401A (en) * 2017-09-12 2019-03-28 タイロン株式会社 Manufacturing method of flexible duct main body part
JP2021076266A (en) * 2019-11-06 2021-05-20 フジモリ産業株式会社 Air-conditioning duct
JP7112787B1 (en) 2021-12-02 2022-08-04 株式会社Ｆｈアライアンス air conditioning ventilation system
JP7411881B2 (en) 2020-07-27 2024-01-12 タイガースポリマー株式会社 flexible hose
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Cited By (15)

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Publication number Priority date Publication date Assignee Title
JP2008202847A (en) * 2007-02-20 2008-09-04 Kurimoto Ltd Flat oval type flexible duct, its manufacturing method, molding method and molding device
JP2010167073A (en) * 2009-01-22 2010-08-05 Atsuo Nozaki Air contaminant removing apparatus
JP2011080512A (en) * 2009-10-06 2011-04-21 Tigers Polymer Corp Heat resistant duct
JP2011122615A (en) * 2009-12-08 2011-06-23 Kanaflex Corporation Heat-resistant duct hose
JP2011190988A (en) * 2010-03-15 2011-09-29 Tigers Polymer Corp Heat-resistant duct
KR101224807B1 (en) 2010-12-10 2013-01-21 윤주영 Method and nonflammable flexible hose for manufacturing an air conditioning used nonflammable flexible hose
JP2013160455A (en) * 2012-02-06 2013-08-19 Fujimori Sangyo Kk Sock duct
JP2015183975A (en) * 2014-03-26 2015-10-22 フジモリ産業株式会社 flexible duct
JP2019049401A (en) * 2017-09-12 2019-03-28 タイロン株式会社 Manufacturing method of flexible duct main body part
JP2021076266A (en) * 2019-11-06 2021-05-20 フジモリ産業株式会社 Air-conditioning duct
JP7478586B2 (en) 2020-05-11 2024-05-07 前田建設工業株式会社 Air supply control device and air conditioning system
JP7411881B2 (en) 2020-07-27 2024-01-12 タイガースポリマー株式会社 flexible hose
JP7112787B1 (en) 2021-12-02 2022-08-04 株式会社Ｆｈアライアンス air conditioning ventilation system
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