JPH06272948A - New flexible duct for air conditioning and manufacturef of same - Google Patents

Abstract

PURPOSE:To provide a simple construction and a good heat insulating quality and attain prevention of dew condensation and reduction of cost while maintaining an adequate flexibility of a flexible duct. CONSTITUTION:A flexible duct for air conditioning is adapted to be connected to air conditioner components such as air conditioning chambers, air conditioning elbows, outlets, ventilating openings and the like, and is formed therein with a vent passage, through which wind passes. The flexible duct for air conditioning is adapted in a state of installation and use to have a heat insulating material 16 securedly mounted on an outer surface of a duct body 14, and have a heat shrinkable film 18 closely covering an outer surface of the heat insulating material. Furthermore, a flocked, layer is applied on the outer surface of the duct body and has the heat shrinkable film 18 closely covering its surface. Therefore, freedom and a high heat insulating effect are maintained in the duct to be coexistent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind duct for ventilation and air conditioning, particularly a flexible duct used mainly for connection from a main duct to an outlet, escape of obstacles, connection to other air conditioners and the like. Regarding

[0002]

2. Description of the Related Art An air passage for conditioned air installed inside a ceiling is used by being connected to an air conditioner such as an air conditioning chamber, an air conditioning elbow, an air outlet, and a ventilation port. Flexible ducts that are wound in a roll or made of non-combustible material such as special vinyl chloride that can be expanded and contracted in the longitudinal direction are widely used in recent years because of their excellent subtle position adjustment, handleability, transportability, and storability. .

[0003]

By the way, in such a flexible duct, a heat insulating material such as glass wool is usually wound around the outer periphery of the flexible duct so that the temperature and humidity of the air conditioner can be controlled accurately. is there. However, if the winding thickness of glass wool or the like is increased in order to obtain a satisfactory heat insulating effect, the result will be closer to satisfying this, but if the heat insulating effect is too much, if the heat insulating material is wound too thick, It is difficult to obtain the flexibility peculiar to the flexible duct, that is, the required expansion and contraction effect. Therefore, conventionally, while keeping the heat insulating material applied to the outer periphery in the heat insulating construction work of these flexible ducts to an appropriate thickness,
It is necessary to perform delicate position adjustment work and avoiding installation in the presence of obstacles.For this reason, while maintaining the flexibility or elasticity of flexible ducts, the temperature and humidity control by the air conditioner has been high. Adiabatic effect that can be done with precision,
There is no flexible duct with excellent dew condensation prevention effect,
The emergence of such ducts has been awaited.

The present invention has been made in view of the above-mentioned problems of the prior art, and its object is an extremely simple structure, which is excellent in heat insulating property while maintaining sufficient flexibility of the flexible duct, and prevents dew condensation. It is an object of the present invention to provide a new air conditioning flexible duct and a method for manufacturing a new air conditioning flexible duct that can achieve low cost.

[0005]

In order to achieve the above object, the present invention provides an air conditioning chamber, an air conditioning elbow, an air outlet,
In an air-conditioning flexible duct that is connected to an air-conditioning device such as a ventilation port and has a ventilation passage formed therein, in which the air flows, the heat-insulating material 16 is fixed to the outer surface of the duct body 14 in the installed and used state. In addition, it further comprises a novel air-conditioning flexible duct 10 in which a heat-shrinkable film 18 is closely adhered to the outer surface of the heat insulating material 16.

Further, in an air-conditioning flexible duct which is connected to air-conditioning equipment such as an air-conditioning chamber, an air-conditioning elbow, a blow-out port, a ventilation port, etc., and which has a ventilation passage formed therein, in which air flows.
This air-conditioning flexible duct forms a flocked layer 20 by applying flocking to the outer surface of the duct body, and the heat-shrinkable film 18 is formed on the outer surface of the flocked layer 20 when the air-conditioning flexible duct is mounted and used. It may be adhered in close contact.

Next, there is provided a method for manufacturing an air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning chamber, an air-conditioning elbow, an air outlet, a ventilation port, etc. and has a ventilation passage formed therein, through which air flows. In the flexible duct, the heat insulating material 16 is fixedly mounted on the outer surface of the duct body 14 having a required cross-sectional shape, and then the heat shrinkable film 18 is heat-shrinked so as to cover the entire outer surface of the heat insulating material 16 so as to be in close contact. It is composed of a new method for manufacturing an air-conditioning flexible duct, which is formed by applying a sheet-like coating.

A method of manufacturing an air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning chamber, an air-conditioning elbow, a blow-out port, and a ventilation port and has a ventilation passage formed therein, through which air flows, is provided. The duct may be formed by flocking the outer surface of the duct main body 14 to form the flocked layer 20, and applying the heat-shrinkable film 18 to the entire outer surface of the flocked layer 20 in a close contact manner.

[0009]

[Function] The plastic film is stretched in advance in a heated state, and the film in that state is wound around the outer peripheral surface of the duct body around the heat insulating material or the flocked layer and heated again to shrink the film. Cover the entire circumference of the heat insulating material in a close contact manner. As a result, a high heat insulation effect without sacrificing flexibility and flexibility of the flexible duct,
Retains the dew condensation prevention effect.

[0010]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic cross-sectional view of a partially omitted air conditioning flexible duct 10 according to a first embodiment of the present invention.

The air-conditioning flexible duct 10 is connected to an air-conditioning apparatus such as an air-conditioning chamber, an air-conditioning elbow, a blowout port, and a ventilation port, and has an air passage 12 through which air flows. The duct may have any cross-sectional shape, and a duct having a rectangular shape, a round shape, or any other shape may be used. As the material of the duct body 14, a conventional corrugated aluminum strip is corrugated, a special vinyl chloride or other non-combustible material is formed to be expandable in the longitudinal direction, and any flexible duct conforming to the regulations may be used.

Due to the nature of the flexible duct, one that can sufficiently retain the flexibility such as elasticity and flexibility is preferably selected, and in particular, delicate position adjustment, handleability, transportability, and storage in the field construction. You should use the one that excels in nature.
In the figure, on the outer surface of the duct body 14, rock wool,
A known heat insulating material 16 such as glass wool or carbonized cork is fixed by adhesion or another known method.

A feature of the present invention is that the duct body 14
The heat insulating material 16 is provided on the outer surface of the heat insulating material 16, and the heat shrinkable film 18 is attached to the outer surface of the heat insulating material 16.
The heat-shrinkable film 18 can be easily applied to the entire outer peripheral surface of the heat insulating material 16 by a known film application method as shown in FIG. That is,
The plastic film is stretched in advance in a heated state, and the film in that state is heated again while being wound around the outer surface of the heat insulating material 16 on the outer periphery of the duct body 14,
As a result, the film is shrunk and the entire outer circumference of the heat insulating material is adhered so that it can be covered tightly. As the film, polyvinyl chloride, polypropylene, polyethylene or other plastic film may be used.

As described above, the duct may have any cross-sectional shape, and various duct shapes are conceivable. However, the deposition method is such that the film shrinks while passing through the heating tunnel. It is sufficient to use an automatic method, a manual method, a hand gun type, or any other method as shown in FIG.

The flexible duct 10 is, for example,
This is particularly characteristic in the mounted and used state as shown in FIG. In the usage state of the duct in the figure, for example, an air conditioner or an air conditioning chamber is arranged in a space above the ceiling slab (not shown) and a ceiling plate installed below the ceiling slab. Has multiple outlets. A main duct (not shown) communicates with the air conditioning chamber. The flexible duct 10 according to the present invention is provided between the air conditioner and the main duct.
Are connected and used.

In the flexible duct structure as described above, the heat insulating material 16 is fixed or wound around the outer surface of the duct body 14, and the heat shrinkable film 18 is adhered to the outer surface. Therefore, firstly, since the film is adhered to the surface of the heat insulating material in a close contact manner, a high heat insulating effect can be maintained. Secondly, a sufficient dew condensation preventing effect can be obtained. Thirdly, since it is possible to maintain a high heat insulating effect and only the film is used, it retains elasticity and flexibility, and construction work on site and delicate position adjustment work can be easily performed. Fourth, such a high heat insulating effect can be obtained at an extremely low cost. Fifth, since the film application work as described above is sufficient, it is not necessary to perform the complicated and inefficient work such as the conventional glass wool in which the adhesive is applied each time the winding work is performed. Sixth, it is lightweight. Seventh, since it retains elasticity and flexibility at all, it has very good transportability, storability, and handleability. Eighth, the film deposition work can be done in a short time with extremely simple equipment. Ninth, the heat insulating material can be protected and damage can be prevented.

The films may be laminated in two layers or three layers. It is sufficient that the outermost surface of the duct body is coated with a film. As shown in FIG. 2, a heat insulating material is wound around the surface of the duct body, and the film is deposited on the surface. It is also possible to dispose a heat insulating material 16 on this outer surface and additionally to cover the outer surface with a heat-shrinkable film 18 to form a multilayer structure.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 to 6. The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, a flocked layer 20 is formed on the outer surface of the duct body 14, and the heat-shrinkable film 18 is attached to the outer surface of the flocked layer 20.

In this embodiment, the duct body 14 is made of foil aluminum, for example, and is formed in a bellows shape in which the projecting peripheral portions 22 and the concave peripheral portions 24 are alternately continuous and the shape-retaining rings are installed. An adhesive is applied to the outer peripheral surface of the duct body 14, and a flame-retardant pile 20a made of nylon, rayon, or the like, which is charged to a high-voltage positive potential while being charged to a high-voltage negative potential, is jetted. Then, they are adhered and a flocking process is performed.

A large heat insulating effect, especially the effect of preventing dew condensation on the outer surface of the duct can be expected for the flocked layer 20 itself applied on the surface of the duct. Further, in the present invention, the heat-shrinkable film 18 is formed on the outer surface. It is made to adhere and to adhere.

In the attached state of this film, as shown in FIG.
As shown in FIG. 5, a large number of voids 26 are formed in the portion sandwiched between the concave peripheral portion 24 and the film 18, and can be formed by an extremely simple process of applying a heat shrinkable film. . By this, the temperature difference between the ventilation passage 12 and the outside air can be made small, and even if the temperature difference is generated by the flocked layer, moisture in the air does not condense on the outer surface of the duct to adhere to them. It is possible to minimize the occurrence of rusting of equipment, corrosion of ceiling plates, slabs, etc., which is caused by accumulated water of the above.

In this embodiment as well, as in the first embodiment, a multi-layer structure may be used. As shown in FIG. 6, the flocked layer 20 is formed directly on the surface of the duct main body, that is, on the first layer side, and above it. A known heat insulating material such as glass wool is provided around the second layer side, and a heat-shrinkable film 18 is applied to the gap between the flocked layer 20 and the heat insulating material 16 and the outer surface of the glass wool to form a multilayer structure. It is a good one, and may have an arbitrary multi-layer structure as long as the flexibility of the flexible duct is not impaired.

As a method of manufacturing this flexible duct, the heat insulating material 1 is formed on the outer surface of the duct body 14 having a required cross-sectional shape.
6 is fixed, and then the heat-shrinkable film 18 is heat-shrinked so as to cover the entire outer surface of the heat insulating material 16, and the air-conditioning flexible duct excellent in the above effects is manufactured. Will be done.

Further, flocking is applied to the outer surface of the flexible duct to form a flocking layer 20, and a heat-shrinkable film 18 is applied to the entire outer surface of the flocking 20 layer to provide a heat insulating effect and a dew condensation preventing effect. Will produce superior air conditioning flexible ducts.

[0025]

As described above, according to the novel air conditioning flexible duct of claim 1, the air conditioning chamber,
Connected to air conditioning equipment such as air conditioning elbow, outlet, ventilation port,
In an air-conditioning flexible duct in which a ventilation passage through which air flows is formed, this air-conditioning flexible duct has a heat insulating material fixed to the outer surface of the duct main body in its installed and used state, and further to the outer surface of the heat insulating material. Since a heat-shrinkable film is adhered in close contact, it has an extremely simple structure, and while maintaining sufficient flexibility of the flexible duct, it has excellent heat insulation properties, and also achieves condensation prevention and low cost. It is possible to perform accurate air conditioning control.

According to claim 2, the air conditioning chamber,
Connected to air conditioning equipment such as air conditioning elbow, outlet, ventilation port,
In an air-conditioning flexible duct having a ventilation passage formed therein, the air-conditioning flexible duct forms a flocked layer by applying flocking to the outer surface of the duct body, and in the mounting and use state of the air-conditioning flexible duct, Since the heat-shrinkable film is adhered to the outer surface of the flocked layer in a close contact manner, a gap between the flocked layer and the film is generated, and the structure is extremely simple, while maintaining sufficient flexibility of the flexible duct. It is possible to obtain high heat insulation and a dew condensation prevention effect. In addition, the transportability, the storability, and the handleability are extremely good.

According to claim 3, the air conditioning chamber,
A method for manufacturing an air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning elbow, an outlet, and a ventilation port, and has a ventilation passage formed therein, through which air flows, wherein the air-conditioning flexible duct has a required cross-sectional shape. A heat insulation material is fixed on the outer surface of the main body, and then a heat-shrinkable film is heat-shrinked so as to cover the entire outer surface of the heat insulation material, and the heat-shrinkable film is adhered to the outer surface of the heat-shrinkable film in a close-fitting manner. With the structure, it is possible to achieve sufficient heat insulation while maintaining sufficient flexibility of the flexible duct, to prevent dew condensation, and to achieve low cost.

According to a fourth aspect, the air conditioning chamber,
A method for manufacturing an air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning elbow, an outlet, and a ventilation port, and has a ventilation passage formed therein, through which air flows, which is the outer surface of the duct body. A flocking layer is formed by applying flocking to the flock, and a heat-shrinkable film is closely adhered to the entire outer surface of the flocking layer to secure the flexibility of the flexible duct and obtain a higher heat insulation effect. Therefore, the air conditioning control can be performed with high accuracy.

[Brief description of drawings]

FIG. 1 is a partially omitted cross-sectional explanatory view of a novel air conditioning flexible duct according to a first embodiment of the present invention.

FIG. 2 is an explanatory cross-sectional view of a main part of a heat insulating material having a multilayer structure in the first embodiment.

FIG. 3 is a partially omitted cross-sectional explanatory view of a novel air conditioning flexible duct according to a second embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional explanatory view of a main part of FIG.

5 is a vertical cross-sectional view of FIG.

FIG. 6 is an enlarged cross-sectional explanatory view of an essential part showing another multilayer structure of the second embodiment.

FIG. 7 is an explanatory view of the deposition processing of the heat-shrinkable film.

FIG. 8 is an explanatory plan view showing a state where the flexible duct according to the present invention is mounted and used.

[Explanation of symbols]

 10 Flexible Duct 12 Ventilation Path 14 Duct Body 16 Heat Insulation Material 18 Heat Shrinkable Film 20 Flocking Layer 26 Void

Claims (4)

[Claims] 1. An air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning chamber, an air-conditioning elbow, an air outlet, a ventilation port, etc., and has a ventilation passage formed therein, through which air flows, in which this air-conditioning flexible duct is installed and used. A new air-conditioning flexible duct in which a heat insulating material is fixed on the outer surface of the duct body, and a heat-shrinkable film is adhered to the outer surface of the heat insulating material. 2. An air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning chamber, an air-conditioning elbow, a blow-out port, and a ventilation port, and in which a ventilation passage through which air flows is formed, wherein the air-conditioning flexible duct is outside the duct body. A novel air-conditioning flexible duct, in which flocking is applied to the surface to form a flocking layer, and a heat-shrinkable film is closely adhered to the outer surface of the flocking layer when the air-conditioning flexible duct is mounted and used. . 3. A method for manufacturing an air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning chamber, an air-conditioning elbow, a blow-out port, a ventilation port, etc., and has a ventilation passage formed therein, through which air flows, formed by the air-conditioning flexible duct. For the duct, a heat insulating material is fixedly installed on the outer surface of the duct main body of the required cross-sectional shape, and then a heat-shrinkable film is heat-shrinked so as to cover the entire outer surface of the heat insulating material and adhered in a close contact manner. A new air-conditioning flexible duct manufacturing method. 4. A method of manufacturing an air-conditioning flexible duct, which is connected to air-conditioning equipment such as an air-conditioning chamber, an air-conditioning elbow, a blow-out port, and a ventilation port, and has a ventilation passage formed therein, through which air flows, the air-conditioning flexible duct being provided. The duct is a novel method for producing an air-conditioning flexible duct in which flocking is applied to the outer surface of the duct body to form a flocking layer, and a heat-shrinkable film is closely adhered to the entire outer surface of the flocking layer.