JP4488501B2 - Insulating duct and inner surface layer exchange method thereof - Google Patents

Insulating duct and inner surface layer exchange method thereof Download PDF

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JP4488501B2
JP4488501B2 JP2004188444A JP2004188444A JP4488501B2 JP 4488501 B2 JP4488501 B2 JP 4488501B2 JP 2004188444 A JP2004188444 A JP 2004188444A JP 2004188444 A JP2004188444 A JP 2004188444A JP 4488501 B2 JP4488501 B2 JP 4488501B2
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surface layer
spiral
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heat insulation
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JP2006010217A (en
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哲哉 稲掛
富男 植
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Tigers Polymer Corp
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Description

本発明は、住宅やビル等における空調設備用のダクトホースとして用いられる断熱ダクト及びその内面層の交換方法に関する。
The present invention relates to a heat insulating duct used as a duct hose for air conditioning equipment in a house, a building, or the like, and a method for replacing an inner surface layer thereof .

従来から、空調設備に接続される送排気用の断熱ダクトとしては、外周に螺旋補強体を設けた内面層、吸音層、中間層、断熱層、外面層を順次内側から積層した構造のものが、特許文献１などで知られている。そして、上記の断熱ダクトにおいては、吸音層を形成する発泡樹脂テープをその隣接する端縁部同士が上記螺旋補強体を挟むようにして突き合わせた状態で螺旋状に捲回することによって形成されており、内面層とその外側の層である吸音層とは強固に結合された構造になっている。
特開平９−８９３５７公報 Conventionally, heat insulation ducts for air supply and exhaust connected to air conditioning equipment have a structure in which an inner surface layer, a sound absorbing layer, an intermediate layer, a heat insulation layer, and an outer surface layer provided with a spiral reinforcement on the outer periphery are sequentially laminated from the inside. Patent Document 1 and the like. And in the above-mentioned heat insulation duct, it is formed by winding the foamed resin tape forming the sound absorbing layer in a spiral shape in a state where the adjacent edge portions face each other with the helical reinforcement interposed therebetween, The inner surface layer and the sound absorbing layer, which is the outer layer, have a structure that is firmly coupled.
JP-A-9-89357

ところで、空調設備は上記断熱ダクトを介して部屋の空気を一日中循環させているので、短期間に断熱ダクトの内面層はその内側にほこりが付着して真っ黒に汚れてしまう現象が発生している。これは内面層を軟質合成樹脂や不織布等の繊維その他の材料で形成しても同じ結果になり、居住空間にきれいな空気を循環させるうえで問題となるものである。   By the way, air conditioning equipment circulates room air throughout the day through the heat insulation duct, so there is a phenomenon in which dust adheres to the inner surface layer of the heat insulation duct and becomes completely black in a short period of time. . This results in the same result even when the inner surface layer is formed of a fiber or other material such as soft synthetic resin or non-woven fabric, and causes a problem in circulating clean air in the living space.

そこで、すでに配管した断熱ダクトの埃で汚染された内面層だけを新しいものに交換できれば好都合であるが、吸音層や断熱層に密着した構造の内面層の取替えは不可能または著しく困難である。   Therefore, it is convenient if only the inner surface layer contaminated with dust in the already installed heat insulating duct can be replaced with a new one, but it is impossible or extremely difficult to replace the inner surface layer having a structure in close contact with the sound absorbing layer or the heat insulating layer.

本発明は、上記の問題に鑑み、内面層とその外側に設けられる発泡樹脂や繊維等で形成される断熱層あるいは吸音層とを備える断熱ダクトにおいて、埃で汚れた内面層だけをその他のダクト構成部分とは分離して交換できるようにすることを目的とするものである。   In view of the above problems, the present invention provides a heat insulating duct including an inner surface layer and a heat insulating layer or a sound absorbing layer formed of a foamed resin, fiber, or the like provided on the outer side, and only the inner surface layer contaminated with dust is used as another duct. The purpose is to make it possible to separate and replace the constituent parts.

本発明の断熱ダクトは、可撓性テープを螺旋状に捲回しその側縁同士を連結するとともに螺旋補強体により筒状に保形して形成した内面層と、内面層の外側に形成した断熱層(吸音層を含む)とを備え、前記断熱層の内周面に形成した螺旋状の凹溝に前記螺旋補強体を螺合させ、前記内面層を螺旋状に回動し軸方向に沿って移動させることにより、前記断熱層から抜き差し自在に構成した断熱ダクトであって、前記断熱層を、第１発泡樹脂テープを隙間なく螺旋状に捲回して形成した第１発泡層と、前記第１発泡層の内周面に第２発泡樹脂テープを所定の間隔をあけて螺旋状に捲回して形成した第２発泡層とで構成し、隣接する第２発泡樹脂テープ同士の螺旋状の隙間をもって前記螺旋状の凹溝に構成したことを特徴とするものである(請求項１)。
The heat insulation duct of the present invention comprises an inner surface layer formed by winding a flexible tape in a spiral shape, connecting the side edges thereof and retaining the shape in a cylindrical shape by a spiral reinforcement, and a heat insulation formed outside the inner surface layer. A layer (including a sound absorbing layer), and the helical reinforcement is screwed into a spiral groove formed on the inner peripheral surface of the heat insulating layer, and the inner surface layer is spirally rotated along the axial direction. A heat-insulating duct configured to be removable from the heat-insulating layer by moving the heat- insulating layer, wherein the heat-insulating layer is formed by spirally winding the first foamed resin tape without gaps, and the first The second foamed resin tape is formed on the inner peripheral surface of one foamed layer by spirally winding the second foamed resin tape at a predetermined interval, and the spiral gap between adjacent second foamed resin tapes It is characterized by comprising the spiral concave groove (claim 1). .

また、本発明の断熱ダクトの内面層交換方法は、可撓性テープを螺旋状に捲回しその側縁同士を連結するとともに螺旋補強体により筒状に保形して形成した内面層と、内面層の外側に形成した断熱層(吸音層を含む)とを備え、前記断熱層の内周面に形成した螺旋状の凹溝に前記螺旋補強体を螺合させ、前記内面層を螺旋状に回動し軸方向に沿って移動させることにより、前記断熱層から抜き差し自在に構成した断熱ダクトの内面層を交換する方法であって、汚染された内面層を断熱層から抜け出し、その後、新しい内面層を断熱層の端部から螺旋状に回動させて断熱層と螺合するように差し入れることを特徴とするものである(請求項２)。
さらに、本発明の断熱ダクトの内面層交換方法は、可撓性テープを螺旋状に捲回しその側縁同士を連結するとともに螺旋補強体により筒状に保形して形成した内面層と、内面層の外側に形成した中間層と、中間層の外側に形成した断熱層(吸音層を含む)とを備え、前記中間層が螺旋波形を有する管状体からなり、この螺旋波形の凸部内周に形成される螺旋状の凹溝に前記螺旋補強体を螺合させ、前記内面層を螺旋状に回動し軸方向に沿って移動させることにより、前記中間層から抜き差し自在に構成した断熱ダクトの内面層を交換する方法であって、汚染された内面層を中間層から抜け出し、その後、新しい内面層を中間層の端部から螺旋状に回動させて中間層と螺合するように差し入れることを特徴とするものであり（請求項３）、また、請求項３において、中間層が、硬質樹脂からなるテープを螺旋状に捲回しその側縁同士を接合するとともに、軸方向に沿って凸部と凹部が交互に形成される螺旋波形管により構成されるものである（請求項４）。
In addition , the method for exchanging the inner surface layer of the heat insulation duct according to the present invention includes an inner surface layer formed by winding a flexible tape in a spiral shape, connecting the side edges thereof, and retaining a cylindrical shape with a spiral reinforcement, A heat insulating layer (including a sound absorbing layer) formed on the outer side of the layer, the helical reinforcing body is screwed into a spiral groove formed on the inner peripheral surface of the heat insulating layer, and the inner surface layer is helically formed. A method of exchanging an inner surface layer of a heat insulation duct configured to be freely inserted and removed from the heat insulating layer by rotating and moving along an axial direction, and removing the contaminated inner surface layer from the heat insulating layer, and then a new inner surface The layer is spirally rotated from the end of the heat insulating layer and inserted so as to be screwed with the heat insulating layer (Claim 2).
Further, the method for exchanging the inner surface layer of the heat insulation duct according to the present invention includes an inner surface layer formed by winding a flexible tape in a spiral shape, connecting the side edges thereof, and retaining a cylindrical shape by a spiral reinforcement, An intermediate layer formed on the outer side of the layer, and a heat insulating layer (including a sound absorbing layer) formed on the outer side of the intermediate layer, and the intermediate layer is formed of a tubular body having a spiral waveform, on the inner periphery of the convex portion of the spiral waveform A heat insulating duct configured to be freely inserted into and removed from the intermediate layer by screwing the spiral reinforcing body into a spiral groove formed and rotating the inner surface layer in a spiral manner along the axial direction. A method of exchanging the inner layer, removing the contaminated inner layer from the intermediate layer, and then inserting the new inner layer into a spiral rotation from the end of the intermediate layer and screwing into the intermediate layer (Claim 3), and In claim 3, the intermediate layer is formed of a spiral corrugated tube in which a tape made of a hard resin is spirally wound to join the side edges thereof, and convex portions and concave portions are alternately formed along the axial direction. (Claim 4).

本発明によれば、内面層の螺旋補強体と、断熱層内周面あるいは中間層の波形凸部内周における螺旋状の凹溝が螺合し、螺旋補強体がオスねじ、螺旋状の凹溝がメスねじとなる構造になるので、内面層だけを回転させることで容易に軸方向に沿って螺旋状に回動して移動し断熱層あるいは中間層から抜け出すことができる。その後、新しい内面層を断熱層あるいは中間層の端部から螺旋状に回動させて断熱層または中間層と螺合させることで、内面層の差し入れも自在に行うことができる。したがって、断熱ダクトの構成部材のうち、埃の付着した内面層のみを取り替えることができ、断熱ダクト全体を取り替える場合に比べ、著しく経済的でかつ省資源である。   According to the present invention, the spiral reinforcement of the inner surface layer and the spiral groove on the inner peripheral surface of the heat insulating layer or the inner periphery of the corrugated convex portion of the intermediate layer are screwed together, and the spiral reinforcement is a male screw and a spiral groove. Therefore, by rotating only the inner surface layer, it can be easily rotated and moved spirally along the axial direction to escape from the heat insulating layer or the intermediate layer. Thereafter, the inner surface layer can be freely inserted by rotating the new inner surface layer spirally from the end of the heat insulating layer or the intermediate layer and screwing it with the heat insulating layer or the intermediate layer. Therefore, among the constituent members of the heat insulation duct, only the inner surface layer to which dust is attached can be replaced, which is remarkably economical and resource saving as compared with the case where the entire heat insulation duct is replaced.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の一実施例に係る断熱ダクトの一部破断側面図で、この断熱ダクト１は、たとえば住宅やビル等の空調システムにおける気体移送用の可撓性ダクトホースとして用いられるものである。 そして、断熱ダクト１は、ダクト保形のための螺旋補強体３を外周面に備える内面層２、断熱層５および外面層１０を内側から順に積層した構造に形成されている。 FIG. 1 is a partially broken side view of a heat insulation duct according to an embodiment of the present invention. This heat insulation duct 1 is used as a flexible duct hose for gas transfer in an air conditioning system such as a house or a building. is there. And the heat insulation duct 1 is formed in the structure which laminated | stacked in order the inner surface layer 2, the heat insulation layer 5, and the outer surface layer 10 which equip an outer peripheral surface with the spiral reinforcement body 3 for duct shape retention.

内面層２は、例えば軟質樹脂や不織布等からなる可撓性テープを螺旋状に捲回して筒状に形成するとともに、可撓性テープの隣接する側縁同士の接合部の外周面に跨って断面略凸形の硬質樹脂からなる螺旋補強体３を螺旋状に捲回して熱融着することにより形成されている。また、隣接する螺旋補強体３，３……間には、その断面積が小さく断面略円形の硬質樹脂からなる３条の補助補強線４，４，４が内面層２の外周面に熱融着されている。   The inner surface layer 2 is formed in a cylindrical shape by winding a flexible tape made of, for example, a soft resin or a nonwoven fabric in a spiral shape, and straddles the outer peripheral surface of the joint portion between adjacent side edges of the flexible tape. The spiral reinforcing body 3 made of a hard resin having a substantially convex cross section is spirally wound and heat-sealed. Further, between the adjacent spiral reinforcing bodies 3, 3..., Three auxiliary reinforcing wires 4, 4, 4 made of a hard resin having a small cross-sectional area and a substantially circular cross section are thermally fused to the outer peripheral surface of the inner surface layer 2. It is worn.

断熱層５は、内面層２の外側に被覆されるが、外面層１０寄りに形成される第１発泡層６と第１発泡層６の内周面に形成される第２発泡層７とが積層して形成される。第１発泡層６は、発泡ポリエチレン（ＰＥ）等の断熱性発泡樹脂テープをその隣接する側縁同士を突き合わせた状態で螺旋状に捲回することによって形成されている。また、第２発泡層７は、上記断熱性発泡樹脂テープを所定の間隔を開けながら螺旋状に捲回して形成したもので、隣接する側縁同士間に螺旋状の凹溝８が形成されている。なお、９は押出機のダイから押し出したＥＶＡ等の半溶融状の接合用樹脂テープで、上記断熱性発泡樹脂テープよりも細幅の接合用樹脂テープ９を、第１発泡層６を形成する断熱性発泡樹脂テープの隣接する側縁同士間の内周面に跨るように、かつ、第２発泡層７を形成する断熱性発泡樹脂テープの外周面に接するように螺旋状に捲回して、断熱層５を構成する第１発泡層６と第２発泡層７同士を接合一体化している。   The heat insulating layer 5 is coated on the outer side of the inner surface layer 2, and includes a first foam layer 6 formed near the outer surface layer 10 and a second foam layer 7 formed on the inner peripheral surface of the first foam layer 6. It is formed by stacking. The first foamed layer 6 is formed by winding a heat insulating foamed resin tape such as foamed polyethylene (PE) spirally in a state in which adjacent side edges are butted together. The second foam layer 7 is formed by spirally winding the heat insulating foamed resin tape with a predetermined interval, and a spiral groove 8 is formed between adjacent side edges. Yes. Reference numeral 9 denotes a semi-molten joining resin tape such as EVA extruded from the die of the extruder, and the first foamed layer 6 is formed by using the joining resin tape 9 narrower than the heat insulating foamed resin tape. Winding spirally so as to straddle the inner peripheral surface between adjacent side edges of the heat insulating foamed resin tape and to contact the outer peripheral surface of the heat insulating foamed resin tape forming the second foam layer 7, The first foam layer 6 and the second foam layer 7 constituting the heat insulating layer 5 are joined and integrated.

外面層１０は、第１発泡層６の外周面に例えば熱可塑性エラストマーからなる可撓性テープを螺旋状に捲回してその隣接する側縁同士の接合することにより形成したもので、第１発泡層６の表面を被覆するものである。この外面層１０は第１発泡層６に接着させてもよいし、単に密着するものであってもよい。   The outer surface layer 10 is formed by spirally winding a flexible tape made of, for example, a thermoplastic elastomer on the outer peripheral surface of the first foam layer 6 and joining adjacent side edges thereof. The surface of the layer 6 is covered. The outer surface layer 10 may be adhered to the first foam layer 6 or may be simply adhered.

図２は、内面層２を螺旋状に回動して断熱層５から抜き出した状態を示す図で、このように内面層２と断熱層５とのねじ構造により両者の抜き差しが自在に行われるものである。   FIG. 2 is a view showing a state in which the inner surface layer 2 is spirally rotated and extracted from the heat insulating layer 5. Thus, the screw structure of the inner surface layer 2 and the heat insulating layer 5 allows both to be inserted and removed freely. Is.

図３は、本発明の他の実施例に係る断熱ダクトの管壁の一部拡大断面図で、断熱ダクト１１は、ダクト保形のための螺旋補強体１３を外周面に備える内面層１２、中間層１５、断熱層１９および外面層２０を内側から順に積層した構造に形成されている。   FIG. 3 is a partially enlarged cross-sectional view of a pipe wall of a heat insulation duct according to another embodiment of the present invention. The heat insulation duct 11 includes an inner surface layer 12 provided with a spiral reinforcement body 13 for duct retention on the outer peripheral surface, The intermediate layer 15, the heat insulating layer 19, and the outer surface layer 20 are formed in a stacked structure in order from the inside.

内面層１２は、前述した実施例１と同様の構成であり、軟質樹脂や不織布等からなる可撓性テープを螺旋状に捲回して筒状に形成するとともに、可撓性テープの隣接する側縁同士の接合部の外周面に跨って断面略凸形の硬質樹脂からなる硬質螺旋補強体１３を螺旋状に捲回して熱融着することにより形成されている。また、隣接する硬質螺旋補強体１３，１３……間には、その断面積が小さく断面略円形の硬質樹脂からなる３条の補助補強線１４，１４，１４が内面層１２の外周面に熱融着されている。   The inner surface layer 12 has the same configuration as that of the first embodiment described above, and is formed by winding a flexible tape made of a soft resin, a nonwoven fabric or the like into a spiral shape, and adjacent to the flexible tape. The hard spiral reinforcement body 13 made of a hard resin having a substantially convex cross section is formed over the outer peripheral surface of the joint portion between the edges, and is formed by spirally winding and heat-sealing. Further, between the adjacent hard spiral reinforcements 13, 13..., Three auxiliary reinforcing wires 14, 14, 14 made of a hard resin having a small cross-sectional area and a substantially circular cross section are heated on the outer peripheral surface of the inner surface layer 12. It is fused.

中間層１５は、高密度ポリエチレン（ＨＤＰＥ）などの摩擦抵抗の小さい硬質樹脂テープを螺旋状に捲回してその隣接する側縁同士を接合するとともに、軸方向に沿って凸部１６と凹部１７が交互に形成された螺旋波形管により構成されている。凸部１６は、凹部１７よりも軸方向において幅広に形成され、その内周には螺旋状の凹溝１８が形成されている。なお、中間層を構成する螺旋波形管は、押出し樹脂チューブを膨張させて連続整形される無継ぎ目のいわゆるコンジットホースで形成してもよい。   The intermediate layer 15 is formed by spirally winding a hard resin tape having a low frictional resistance such as high-density polyethylene (HDPE) to join adjacent side edges thereof, and has a convex portion 16 and a concave portion 17 along the axial direction. It is composed of helical corrugated tubes formed alternately. The convex portion 16 is formed wider than the concave portion 17 in the axial direction, and a spiral concave groove 18 is formed on the inner periphery thereof. In addition, you may form the spiral corrugated pipe | tube which comprises an intermediate | middle layer with the seamless so-called conduit hose which expands an extrusion resin tube and is continuously shape | molded.

断熱層１９は、中間層１５の外側に被覆されるが、発泡ポリエチレン（ＰＥ）等の断熱性発泡樹脂テープをその隣接する側縁同士を突き合わせた状態で螺旋状に捲回することによって形成されている。   The heat insulation layer 19 is coated on the outer side of the intermediate layer 15, and is formed by winding a heat insulation foamed resin tape such as foamed polyethylene (PE) in a spiral manner with its adjacent side edges butting each other. ing.

外面層２０は、断熱層１９の外周面に例えば熱可塑性エラストマーからなる可撓性テープを螺旋状に捲回してその隣接する側縁同士の接合することにより形成したもので、断熱層１９の表面を被覆するものである。この外面層２０は断熱層１９に接着させてもよいし、単に密着するものであってもよい。   The outer surface layer 20 is formed by spirally winding a flexible tape made of, for example, a thermoplastic elastomer on the outer peripheral surface of the heat insulating layer 19 and joining adjacent side edges thereof. Are covered. The outer surface layer 20 may be adhered to the heat insulating layer 19 or may be simply adhered.

図４は、内面層１２を螺旋状に回動して中間層１５から抜き出した状態を示す図で、このように内面層１２と中間層１５とのねじ構造により両者の抜き差しが自在に行われるものである。なお、本実施例２においては、中間層１５を形成する硬質樹脂の摩擦抵抗が小さいので内面層１２の抜き差しを円滑に行うことができるほか、内面層１２を抜き取った際の断熱層１９を中間層１５で保持して形状の維持を図ることができる。さらには、螺旋状の凹溝１８により内面層１２の外側に断熱空間を形成することになるので、ダクトの断熱性をより高めることもできる。   FIG. 4 is a view showing a state in which the inner surface layer 12 is spirally rotated and extracted from the intermediate layer 15. Thus, the screw structure of the inner surface layer 12 and the intermediate layer 15 allows the both to be inserted and removed freely. Is. In Example 2, since the frictional resistance of the hard resin forming the intermediate layer 15 is small, the inner surface layer 12 can be smoothly inserted and removed, and the heat insulating layer 19 when the inner surface layer 12 is extracted is used as an intermediate layer. The shape can be maintained by being held by the layer 15. Furthermore, since the heat insulating space is formed outside the inner surface layer 12 by the spiral concave groove 18, the heat insulating property of the duct can be further improved.

なお、本発明は、上記の実施形態に限定されるものでなく、本発明の範囲内で上記実施形態に変更を加える得ることは勿論のことである。 In addition, this invention is not limited to said embodiment, Of course, a change can be added to the said embodiment within the scope of the present invention.

断熱ダクトの一実施例を示す一部破断側面図である。It is a partially broken side view which shows one Example of a heat insulation duct. 断熱ダクトの内面層を断熱層から抜き出している状態を示す図である。It is a figure which shows the state which has extracted the inner surface layer of the heat insulation duct from the heat insulation layer. 断熱ダクトの他の実施例を示す管壁の一部拡大断面図である。It is a partially expanded sectional view of the pipe wall which shows the other Example of a heat insulation duct. 他の実施例における内面層を中間層から抜き出している状態を示す図である。It is a figure which shows the state which has extracted the inner surface layer in the other Example from the intermediate | middle layer.

符号の説明Explanation of symbols

１ 断熱ダクト
２ 内面層
３ 螺旋補強体
４ 補助補強線
５ 断熱層
６ 第１発泡層
７ 第２発泡層
８ 凹溝
９ 接合用樹脂テープ
１０ 外面層
１１ 断熱ダクト
１２ 内面層
１３ 螺旋補強体
１４ 補助補強線
１５ 中間層
１６ 凸部
１７ 凹部
１８ 凹溝
１９ 断熱層
２０ 外面層
DESCRIPTION OF SYMBOLS 1 Heat insulation duct 2 Inner surface layer 3 Spiral reinforcement body 4 Auxiliary reinforcement wire 5 Heat insulation layer 6 First foam layer 7 Second foam layer 8 Groove 9 Bonding resin tape 10 Outer surface layer
DESCRIPTION OF SYMBOLS 11 Heat insulation duct 12 Inner surface layer 13 Spiral reinforcement body 14 Auxiliary reinforcement wire 15 Intermediate layer 16 Convex part 17 Concave part 18 Concave groove 19 Insulating layer 20 Outer surface layer

Claims (4)

可撓性テープを螺旋状に捲回しその側縁同士を連結するとともに螺旋補強体により筒状に保形して形成した内面層と、内面層の外側に形成した断熱層(吸音層を含む)とを備え、前記断熱層の内周面に形成した螺旋状の凹溝に前記螺旋補強体を螺合させ、前記内面層を螺旋状に回動し軸方向に沿って移動させることにより、前記断熱層から抜き差し自在に構成した断熱ダクトであって、
前記断熱層を、第１発泡樹脂テープを隙間なく螺旋状に捲回して形成した第１発泡層と、前記第１発泡層の内周面に第２発泡樹脂テープを所定の間隔をあけて螺旋状に捲回して形成した第２発泡層とで構成し、隣接する第２発泡樹脂テープ同士の螺旋状の隙間をもって前記螺旋状の凹溝に構成したことを特徴とする断熱ダクト。
An inner surface layer formed by winding a flexible tape in a spiral shape and connecting the side edges thereof and retaining a cylindrical shape with a spiral reinforcement, and a heat insulating layer (including a sound absorbing layer) formed outside the inner surface layer The helical reinforcement is screwed into a spiral groove formed on the inner peripheral surface of the heat insulating layer, and the inner surface layer is rotated spirally and moved along the axial direction. A heat insulation duct configured to be freely inserted and removed from the heat insulation layer ,
The heat insulation layer is formed by spirally winding the first foamed resin tape without gaps, and the second foamed resin tape is spirally spaced on the inner peripheral surface of the first foam layer with a predetermined interval. A heat insulating duct comprising a second foamed layer formed by winding in a spiral shape and having a spiral gap between adjacent second foamed resin tapes.
可撓性テープを螺旋状に捲回しその側縁同士を連結するとともに螺旋補強体により筒状に保形して形成した内面層と、内面層の外側に形成した断熱層(吸音層を含む)とを備え、前記断熱層の内周面に形成した螺旋状の凹溝に前記螺旋補強体を螺合させ、前記内面層を螺旋状に回動し軸方向に沿って移動させることにより、前記断熱層から抜き差し自在に構成した断熱ダクトの内面層を交換する方法であって、An inner surface layer formed by winding a flexible tape in a spiral shape and connecting the side edges thereof and retaining a cylindrical shape with a spiral reinforcement, and a heat insulating layer (including a sound absorbing layer) formed outside the inner surface layer The helical reinforcement is screwed into a spiral groove formed on the inner peripheral surface of the heat insulating layer, and the inner surface layer is rotated spirally and moved along the axial direction. A method of exchanging an inner surface layer of a heat insulation duct configured to be freely inserted and removed from a heat insulation layer,
汚染された内面層を断熱層から抜け出し、その後、新しい内面層を断熱層の端部から螺旋状に回動させて断熱層と螺合するように差し入れることを特徴とする断熱ダクトの内面層交換方法。An inner surface layer of a heat insulating duct, wherein the contaminated inner surface layer is pulled out of the heat insulating layer, and then the new inner surface layer is inserted so as to be spirally rotated from the end of the heat insulating layer and screwed into the heat insulating layer. method of exchange.
可撓性テープを螺旋状に捲回しその側縁同士を連結するとともに螺旋補強体により筒状に保形して形成した内面層と、内面層の外側に形成した中間層と、中間層の外側に形成した断熱層(吸音層を含む)とを備え、前記中間層が螺旋波形を有する管状体からなり、この螺旋波形の凸部内周に形成される螺旋状の凹溝に前記螺旋補強体を螺合させ、前記内面層を螺旋状に回動し軸方向に沿って移動させることにより、前記中間層から抜き差し自在に構成した断熱ダクトの内面層を交換する方法であって、
汚染された内面層を中間層から抜け出し、その後、新しい内面層を中間層の端部から螺旋状に回動させて中間層と螺合するように差し入れることを特徴とする断熱ダクトの内面層交換方法。
An inner surface layer formed by winding a flexible tape in a spiral shape and connecting the side edges thereof and retaining it in a cylindrical shape by a spiral reinforcement, an intermediate layer formed on the outer side of the inner surface layer, and an outer side of the intermediate layer The intermediate layer is formed of a tubular body having a spiral waveform, and the spiral reinforcement is formed in a spiral groove formed on the inner periphery of the convex portion of the spiral waveform. It is a method of replacing the inner surface layer of the heat insulation duct configured to be detachable from the intermediate layer by screwing and rotating the inner surface layer in a spiral and moving along the axial direction ,
An inner surface layer of a heat insulation duct, wherein the contaminated inner surface layer is pulled out from the intermediate layer, and then the new inner surface layer is inserted so as to be spirally rotated from the end of the intermediate layer and screwed into the intermediate layer. method of exchange.
中間層が、硬質樹脂からなるテープを螺旋状に捲回しその側縁同士を接合するとともに、軸方向に沿って凸部と凹部が交互に形成される螺旋波形管により構成される請求項３に
記載の断熱ダクトの内面層交換方法。 The intermediate layer is composed of a spiral corrugated tube in which a tape made of a hard resin is spirally wound to join the side edges thereof, and convex portions and concave portions are alternately formed along the axial direction. The inner surface layer exchange method of the heat insulation duct as described .
JP2004188444A 2004-06-25 2004-06-25 Insulating duct and inner surface layer exchange method thereof Expired - Lifetime JP4488501B2 (en)

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JP4775630B2 (en) * 2005-09-16 2011-09-21 東拓工業株式会社 Duct hose
JP2011149575A (en) * 2010-01-19 2011-08-04 Evuc Kk Sound deadening duct
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61141672U (en) * 1985-02-20 1986-09-02
JPH0566444U (en) * 1992-02-12 1993-09-03 日立プラント建設株式会社 Screw duct structure
JPH0719396A (en) * 1993-06-30 1995-01-20 U C Sangyo Kk Heat insulation
JPH09166278A (en) * 1995-12-15 1997-06-24 Kuraray Plast Kk Heat insulated duct
JPH1054497A (en) * 1996-08-08 1998-02-24 Tigers Polymer Corp Duct hose
JP2002195635A (en) * 2000-12-27 2002-07-10 Kana Flex Corporation Kk Insulated duct
JP2003202150A (en) * 2001-10-29 2003-07-18 Kurimoto Ltd Telescopic spiral duct

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61141672U (en) * 1985-02-20 1986-09-02
JPH0566444U (en) * 1992-02-12 1993-09-03 日立プラント建設株式会社 Screw duct structure
JPH0719396A (en) * 1993-06-30 1995-01-20 U C Sangyo Kk Heat insulation
JPH09166278A (en) * 1995-12-15 1997-06-24 Kuraray Plast Kk Heat insulated duct
JPH1054497A (en) * 1996-08-08 1998-02-24 Tigers Polymer Corp Duct hose
JP2002195635A (en) * 2000-12-27 2002-07-10 Kana Flex Corporation Kk Insulated duct
JP2003202150A (en) * 2001-10-29 2003-07-18 Kurimoto Ltd Telescopic spiral duct

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