JPH0544577B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a flexible structure duct used in air conditioning equipment and the like.

[Conventional technology]

Conventionally, ducts installed in air conditioning equipment, etc. have been limited to those made of sheet metal.

[Problem that the invention seeks to solve]

By the way, the conventional sheet metal duct has a weight,
There were problems such as the large volume making it inconvenient to transport and store, the product having to be produced as a single item according to design specifications, there was no flexibility in shape and size, and the installation work was heavy work.

The present invention was created to solve the above-mentioned conventional problems.It is lightweight, flexible in shape and size, easy to transport, store, and install, and is flexible enough to significantly reduce construction time and construction costs. The purpose is to provide structural ducts and their construction methods.

[Means for solving problems]

In order to achieve the above object, the present invention constructs a flexible structural duct by incorporating a flexible and airtight core tube in an outer shell in which a flexible outer skin material is attached to a bendable gabion-shaped frame material. The frame material of the flexible structure duct is shortened into a bellows shape and transported, stretched to a specified length at the construction site and connected in a specified number of times, and the outer skin material is pasted on the four circumferential surfaces, and the specified length is placed inside the outer shell. The duct is characterized by a flexible construction method in which a core tube is inserted and the duct is bent to suit the installation location.

[Effect]

Since it is not made of sheet metal, it is lightweight and has a flexible structure that allows it to be shortened, extended, and bent, making it convenient to transport and store, as well as being designed with great flexibility in size and shape depending on the on-site fit and air flow rate. There is no need to produce one product each time, and installation work is easy.

〔Example〕

The present invention will be explained in detail below based on illustrated embodiments.

As shown in FIG. 1, a flexible structure duct 1 according to the present invention has a flexible and airtight long duct inside an outer shell 2 in which a flexible outer skin material 2b is attached to a bendable gabion-shaped frame material 2a. It has a core tube 3 built into it.

That is, the frame material 2a is made by assembling wires with a wire diameter that can be bent by hand into a cubic shape and connecting them into a long gabion shape, and the outer skin material 2b is a protective material such as a curing net. The elongated core tube 3 is attached to the four circumferential surfaces of the frame member 2a, and is made of a flexible membrane tube that is airtight and nonflammable and is used in air domes and the like.

When the above-mentioned duct 1 of the present invention is transported and stored, the frame material 2a is bent by hand to shorten it into a bellows shape as shown in FIG. At the same time, a core tube 3 of a predetermined length is inserted into the outer shell 2, bent to fit the installation location, and suspended with a hanging wire 4, or a ceiling etc. Install it directly on the

Fig. 3 is a plan view of the duct 1 of the present invention installed in a straight line, and Fig. 4 is a plan view of the duct 1 of the present invention installed in a curved form. The outer shell 2 can be bent freely both horizontally and vertically, and the core tube 3 can easily follow this deformation.

Figures 5 to 10 show the outer shell 2 and core tube 3.
Fig. 5 shows the state in which the core tube 3 is contracted when the ventilation is stopped, Fig. 6 shows the state in which the core tube 3 is expanded to the full extent of the outer shell 2 at the time of maximum ventilation, and Fig. 7 shows the state in which the core tube 3 is expanded to the full extent of the outer shell 2. When the same outer shell 2 as in Figs. 5 and 6 is deformed into a flat shape, the same core tube 3 is formed.
shows a state in which the cross-sectional shape has been deformed in accordance with the deformation of the outer shell 2.

Fig. 8 is an example in which the air volume of the duct 1 is regulated by inserting a core tube 3 with a small airflow into the outer shell 2 which is the same as Figs. 5 and 6, and Fig. 9 is the same as Figs.
An example in which a partition 5 is provided in the same outer shell 2 as shown in the figure to regulate the ventilation volume of the core tube 3 as shown in Figs. 5 and 6, and Fig. 10 shows the vertical part of the frame member 2a of the outer shell 2. This shows an embodiment in which a strength member 6 having a rigidity that cannot be bent by hand is provided so that the required amount of ventilation can be ensured even when the outer shell 2 is deformed into a flat shape.

〔Effect of the invention〕

As explained above, the flexible structural duct of the present invention has a flexible and airtight core tube embedded in the outer shell, which is made by pasting a flexible outer skin material on a bendable gabion-shaped frame material. The frame material of the structural duct is shortened into a bellows shape and transported, stretched to a specified length at the construction site and connected in a specified number of ways, and the outer skin material is pasted on the four circumferential surfaces, and a specified length of the frame material is attached inside the outer shell. The core tube is inserted and bent to fit the installation location, and the following effects are achieved.

That is, it is much lighter than conventional sheet metal ducts, making it easier to transport and install.

Since the membranous core tube is protected by the outer skin material, there is no need to worry about damage, and
Noncombustible materials can be used for the outer skin material and core tube.

Membrane core tubes have less ventilation leakage than sheet metal ducts.

Since the frame material is expandable and contractible, it can be reduced in size during transportation and storage to save space.

It is possible to change the cross-sectional shape and the direction of the ventilation path.
In addition, the amount of ventilation can be set arbitrarily by appropriately combining the frame material and core tube and by deforming the frame material.
There is no need to produce a single product based on design specifications.

As a result of the above, a significant reduction in construction period and construction cost is achieved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing the installed state of the flexible structure duct according to the present invention, FIG. 2 is a perspective view showing the shortened state during transportation and storage, and FIG. 3 Figure 4 is a plan view of the duct installed in a straight line, Figure 4 is a plan view of the duct installed in a curved line, Figure 5 is a vertical cross-sectional view of the duct when ventilation is stopped, and Figure 6 is a plan view of the duct installed in a straight line. Figure 7 is a vertical cross-sectional view of the same duct at maximum ventilation, Figure 7 is a vertical cross-sectional view showing the conformation state of the core tube when the same outer shell in Figures 5 and 6 is deformed into a flat shape, and Figure 8 is a vertical cross-sectional view of the same duct at maximum ventilation. A vertical sectional view showing an example in which the air volume of the duct is regulated by inserting a core tube with a small airflow volume into the same outer shell as in Figures 5 and 6. Figure 9 is similar to Figures 5 and 6. A vertical cross-sectional view showing an example in which a partition is provided in the same outer shell to regulate the airflow of the same core tube, and FIG. 10 shows an example in which a strength member is provided in the outer shell to ensure the required airflow. This is a longitudinal section shown. 1...Flexible structure duct, 2...Outer shell, 2a...
Frame material, 2b... Outer skin material, 3... Core tube.

Claims (1)

[Scope of Claims] 1. A flexible structured duct comprising a flexible and airtight core tube embedded in an outer shell in which a flexible outer skin material is attached to a bendable gabion-shaped frame material. 2. The frame material of a flexible structure duct, which has a flexible and airtight core tube embedded in an outer shell in which a flexible outer skin material is attached to a bendable gabion-shaped frame material, is shortened into a bellows shape and transported. Then, at the construction site, they are stretched to a specified length and connected in a predetermined number, and outer skin material is pasted on the four circumferential surfaces, and a core tube of a predetermined length is inserted into the outer shell to fit the installation location. A method of constructing a flexible structure duct characterized by bending the duct.