JP3063861U - Flexible duct - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent deformation and increase of flow resistance even when suspended and attached, and to prevent the heat insulating layer from being compressed to deteriorate the heat insulating effect. SOLUTION: The surface of a flexible cylindrical core 5 is sequentially covered with a heat insulating layer 8 and a heat insulating layer 9 to form a flexible cylindrical body 10, and the heat insulating layer 9 is arranged in a longitudinal direction of the flexible cylindrical body 10. To form a protruding wall portion 11, and the protruding wall portion 11 has a through hole 1.
The flexible duct 17 is horizontally held without deformation, and the heat insulating layer 8 is not compressed and thinned.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a technology for a flexible duct for efficiently transporting air circulating in an air conditioner or the like.

[0002]

[Prior art]

 Ducts for circulating air, such as air conditioners, are made flexible to facilitate piping and installation. When such a conventional flexible duct is installed in a room or the like, as shown in FIG. 5, the flexible duct 1 is gripped by a band 3 having eyelets 2 at both ends. The suspension 4 was attached to the eyelets 2 of the band 3 and attached to the ceiling of the room.

[0003]

[Problems to be solved by the invention]

 In the conventional flexible duct, the duct between the gripping bands 3 hangs down due to its own weight and the weight of the circulating air, and the flexible duct is deformed into a wavy shape (see FIG. 5). As a result, the flow resistance of the air increases and the flow of the air is deteriorated. Also, the band 3 bites into the flexible duct 1 to reduce the thickness of the heat insulating layer, thereby impairing the heat insulating effect. There is a problem in that it is complicated to attach 3 and the workability is deteriorated.

An object of the present invention is to provide a flexible duct having good workability, such as piping, which can smoothly flow air having good heat retention without deterioration of a heat insulating effect.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the flexible duct of the present invention, a part of the outer surface of the flexible duct is protruded in the length direction to form a projecting wall, and the projecting wall is formed on the projecting wall. Attachment of suspension equipment is required.

[0006] The presence of the protruding wall portion prevents the flexible duct itself from being deformed even when the pipe is hung by a hanging tool, so that the air can flow smoothly and the heat insulating effect can be obtained. Deterioration can be prevented, and the mounting workability can be facilitated.

[0007]

[Embodiment of the invention]

 According to the present invention, a protruding wall portion is provided on the outer surface of a flexible cylindrical body formed by sequentially covering the surface of a flexible cylindrical core with a heat insulating layer and a heat insulating layer, in the length direction thereof. Attach hanging parts to the part.

When piping the flexible duct to the ceiling or the like, the hanging tool may be attached to the protruding wall portion, so that the weight is loaded on the flexible duct and the flexible duct itself is deformed. Air can flow smoothly, and the flexible duct itself does not deform and compress the heat insulating layer, so that the heat insulating effect can be maintained well. Piping can be performed simply by attaching a suspending tool to the part, which facilitates installation work.

[0009] Furthermore, the surface of a flexible cylindrical core in which the inner and outer surfaces of a spirally formed wire rod are covered with a nonwoven fabric is covered with a heat insulating layer, and the surface of the heat insulating layer is covered with a heat insulating layer. A flexible cylindrical body is formed, and a part of the heat insulating layer is protruded in the length direction of the flexible cylindrical body to form a protruding wall portion, and a through hole for attaching a hanging tool is formed in the protruding wall portion. is there.

When the flexible duct is piped to a ceiling or the like, a through hole of a projecting wall formed by projecting a part of a heat insulating layer having mechanical strength in the length direction of the flexible cylinder. The flexible duct can be mounted horizontally, so that the weight of the flexible duct is loaded on the projecting wall and the flexible duct itself is not deformed, but can be suspended horizontally to allow air to flow smoothly. In addition, the heat insulating effect can be maintained well, and piping can be easily performed.

[0011]

【Example】

 The embodiment will be described in detail with reference to FIGS. FIG. 1 is a side view of the flexible duct with a part cut away, FIG. 2 is a cross-sectional view of the flexible duct, FIG. 3 is a cross-sectional view of a main part illustrating a modification of the flexible duct, and FIG. Shows an explanatory view of the suspension state of the flexible duct.

In FIG. 1 to FIG. 4, reference numeral 5 denotes a flexible cylindrical core, which is formed by spirally winding a polyester non-woven tape to which a zinc-treated steel wire is adhered, and The inner and outer surfaces are covered with a nonwoven fabric 7. Numeral 8 is a heat insulating layer covering the surface of the flexible cylindrical core 5, which is made of glass wool and has a function of keeping heat and silencing. Reference numeral 9 denotes a heat insulating layer for covering the surface of the heat insulating layer 8, which has a two-layer structure by adhering a polyethylene terephthalate layer to the inner surface side of the aluminum foil, and has a function of heat insulating and preventing dew. Reference numeral 10 denotes a flexible cylindrical body formed by sequentially covering the surface of the flexible cylindrical core 5 with a heat insulating layer 8 and a heat insulating layer 9. A protruding wall portion formed by protruding in the shape of a letter, 12 is a reinforcing wire rod inserted into the bent portion of the protruding wall portion 11, and 13 is an eyelet-shaped through hole formed in the protruding wall portion 11, which is a flexible duct. At the time of piping to a ceiling or the like, a hanging tool 14 is attached to the through hole 13. Numerals 15 are joints formed at both ends of the flexible cylindrical body 10, which compress the heat insulating layer 8 and tighten the surface of the heat insulating layer 9 with an adhesive tape 16 of aluminum foil. The joints 15 connect the flexible ducts 17 or connect the flexible ducts 17 to devices. The reinforcing wire 12 is not necessary when the projecting wall 11 has a sufficient mechanical strength, and as shown in FIG. It is also possible to attach a reinforcing plate 18 to the reinforcing member for reinforcement.

The protruding wall portion 11 is covered with a heat insulating layer 9 having a larger size than the outer peripheral surface of the flexible cylindrical core 5 in a state where the surface of the flexible cylindrical core 5 is covered with the heat insulating layer 8, and an excess portion is projected. It can be formed by

In the case of piping the flexible duct 17 having the above-described configuration, the hanging tool 14 fixed to a ceiling or the like is attached to the through hole 13 formed in the projecting wall portion 11 having mechanical strength. The weight of the flexible duct 17 may be applied to the protruding wall portion 11 and not to the flexible duct itself. Air can be smoothly circulated. Further, since a stress that compresses the heat insulating layer 8 and degrades the heat insulating effect is not applied to the flexible duct 17, the heat insulating effect can be maintained satisfactorily. Since the piping can be easily carried out only by attaching the hooks of the hanging members 14 to the members 13, the work of attaching the flexible duct 17 is simplified.

[0015]

[Effect of the invention]

 The present invention is embodied in the form described above and has the following effects.

When a flexible duct is piped to a ceiling or the like, the weight of the flexible duct is loaded on the projecting wall by attaching a suspension tool to the projecting wall, and the flexible duct is deformed. Because it is suspended horizontally, the flow resistance of air flowing inside does not increase, and the heat insulating layer of the flexible duct is compressed and thinned to deteriorate the heat insulating effect. In addition, a flexible duct that circulates air for air conditioning while keeping the temperature of the air satisfactorily can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of a flexible duct according to an embodiment of the present invention, in which a part of a flexible duct is cut away.

FIG. 2 is a sectional view of the flexible duct.

FIG. 3 is a cross-sectional view of a main part illustrating a modification of the flexible duct.

FIG. 4 is an explanatory diagram of a suspended state of the flexible duct.

FIG. 5 is an explanatory view of a state in which a conventional flexible duct is suspended.

[Explanation of symbols]

 5 Flexible Cylindrical Core 7 Nonwoven Fabric 8 Heat Insulating Layer 9 Heat Insulating Layer 10 Flexible Cylindrical Body 11 Projecting Wall 13 Through Hole 14 Hanging Tool 17 Flexible Duct

Claims (2)

[Utility model registration claims] 1. A protruding wall portion is provided on an outer surface of a flexible cylindrical body formed by sequentially covering a surface of a flexible cylindrical core with a heat insulating layer and a heat retaining layer, in a length direction thereof. A flexible duct for attaching a suspension to a part. 2. The surface of a flexible cylindrical core in which the inner and outer surfaces of a spirally formed wire rod are covered with a nonwoven fabric is covered with a heat insulating layer, and the surface of the heat insulating layer is covered with a heat insulating layer. A flexible cylindrical body is formed, and a part of the heat insulating layer is protruded in the length direction of the flexible cylindrical body to form a projecting wall portion, and a through hole for attaching a hanging tool is formed in the projecting wall portion. duct.