KR100985319B1 - Air duct for prevention of scattering dust of heat insulating material and its manufacturing method - Google Patents

Abstract

PURPOSE: An air duct for preventing the dust from scattering from a heat insulating material and a manufacturing method thereof are provided to prevent the decrease of the heat insulation performance due to the position change of the heat insulating material by an inner duct and an outer jacket to which the heat insulating material are attached. CONSTITUTION: Synthetic resin films(22,24) are thermally melted to the aluminum foil and the aluminum based inner and outer members of a roll type are wound. The wound aluminum based inner and outer members are released and the aluminum based inner and outer members are thermally melted on both sides of the insulating material wound from a roll type of insulating material to wind a roll type of duct member. The duct member is released and the edges between the front part and the rear part of the duct member are overlapped, are spirally wound, are fixed to the overlapped part using adhesive or a coupling unit and form a cylindrical air duct(30).

Description

Air duct for scattering dust of insulating material and manufacturing method thereof {AIR DUCT FOR PREVENTION OF SCATTERING DUST OF HEAT INSULATING MATERIAL AND ITS MANUFACTURING METHOD}

The present invention relates to an air duct having a heat insulating material and a method for manufacturing the same, which can be easily bent and prevents heat transfer between the fluid moving through the inner passage and external periods, and more particularly, in a work process such as construction or repair. The present invention relates to an air duct for preventing scattering of insulation dust and a method of manufacturing the same, which prevents the outer surface of the air duct from being damaged and scattering dust of the insulation.

In general, many buildings use air ducts for the purpose of introducing outside fresh air into the interior, sending cloudy indoor air out of the building, or transporting cold and warm air flows for cooling and heating.

Air ducts are usually manufactured in a spiral shape by winding spiral duct materials such as rolled aluminum foil, synthetic tape, nonwoven fabrics, or by winding a metal band in a triangular, square or circular barrel to suit the purpose. In the case of manufacturing using duct materials such as aluminum foil, synthetic tape, and nonwoven fabric, a steel wire may be purchased at overlapping portions when the duct material is spirally wound, or a utility model registration filed by the present applicant is registered. As in the case of arc, the use of a binding port makes it possible to maintain a cylindrical shape.

In addition, condensation occurs in the air duct due to a difference between the temperature of the air flowing in the air duct and the temperature of the air outside the air duct, or the temperature of the air in the air duct is not affected by the temperature of the outside air, Alternatively, an air duct 10 having a heat insulating layer is also used as shown in FIG. 1 for the purpose of preventing noise from being transferred to the outside due to movement of air flowing through the air duct.

1 is a view showing the configuration of a flexible duct provided with a conventional heat insulating material, Figure 1 (a) is a cutaway perspective view, Figure 1 (b) is an exploded perspective view of the main portion, Figure 1 (c) is an assembly perspective view Represent each. As shown in the accompanying drawings, the flexible air duct 10 has a structure in which an insulation material 12 is inserted between the endothelial duct 11 and the outer jacket 13 and between the endothelial duct 11 and the outer jacket 13. . The endothelial duct 11 is structured to be wound while inserting the steel wire 14 in the form of a coil between the overlapping aluminum foils while winding the aluminum foils in order to maintain a constant shape and to have a restoring force to the outside. .

Asbestos is the most widely used as the heat insulating material. Asbestos, however, has been proven to have fatal adverse effects on humans, such as floating in the air in the form of dust and entering the human body through human respiration, causing various diseases or, in severe cases, malignant lung cancer. Is rarely used.

Recently, glass wool is used in place of asbestos as a heat insulating material. However, the glass surface has many inconveniences to transport, store and work because the surface is not only brittle and bad to the touch, but also because the dust is flying. In particular, in the building air duct, glass wool having a heat shielding effect is used between the endothelial duct 11 and the outer jacket 13 constituting the air duct. And it is harmful to health, glass wool itself is not absorbent there is a problem that the moisture in the air duct due to the absorption of moisture. In addition, in case of fire, toxic gas may be generated on the glass surface, so there is a danger that even a small fire may lead to a large accident.

In addition, the endothelial duct 11, the heat insulating material 12 and the outer jacket 13 are each manufactured separately and manufactured in the form of fitting, and the length is also manufactured to about 10 meters, the operator carries the air duct for construction When dragging, the position between the endothelial duct (11), the insulation (12) and the outer jacket (13) may be displaced. It can not be repaired. In addition, in the case of construction by hanging the air duct on the ceiling is fixed by taping the end of the jacket jacket 13 to the tin duct passing through the ceiling, the endothelial duct 11 and the heat insulating material 12 and jacket jacket 13 If the position is misplaced, some may fall off, or if the outer shell is broken, the outer shell is easily peeled off, and thus a defect occurs in construction such as dust.

 In addition, the heat insulating material 12 is usually manufactured in a state in which the ends of the four-sided flat-shaped material is rolled in a cylindrical shape, and the ends are overlapped. In this case, the diameter of the air duct may be increased, and the logistics cost may be increased. When the overlapped portion at the time of installation toward the outside of the bent portion, the overlapping portion is opened, the heat retention force may be lowered.

In addition, Figure 1 (c) shows a perspective view of an air duct having a predetermined length, when using the air duct to the end of the end of the inner duct (11) in order to finish the end of the air duct insulation ( 12) in the state covering the end of the jacket 13 with the tape 15 to attach the boundary between the inner duct (11) and jacket jacket 13, the work for this must be done manually by hand and uncomfortable If you want to cut and use the air duct because it is time-consuming, and the length of the air duct is long, it is not only inconvenient to do the same finish as above, but dust may be generated during the cutting of the air duct, which may cause environmental pollution. There was a problem.

The present invention has been invented in view of the above circumstances, and is formed by spirally winding using a duct material in which the inner duct, the heat insulating material and the outer jacket are integrally attached, thereby maintaining the heat insulating property using the same heat insulating material as before. However, there is no gap between the insulation and the inner skin, so no condensation occurs, the volume can be reduced, and the construction is convenient, and the inner skin and the insulation are not separated, which prevents the deterioration of the thermal insulation. An object of the present invention is to provide a preventive air duct and a method of manufacturing the same.

The present invention for achieving the above object, the step of heat-bonding a synthetic resin film to the aluminum foil to wound the aluminum inner skin substrate in the form of a roll, by removing the aluminum inner skin substrate from the roll-shaped aluminum inner skin substrate It is attached to both sides of the heat insulating material released from the heat insulating material in the roll form and wound to roll the duct base material in the roll form, the duct base material is released from the roll type duct base material and overlaps the edge between the preceding part and the trailing part. It is then wound in a spiral and the overlapping portion is fixed by using an adhesive or a binder comprises a step of forming a cylindrical air duct.

In the above, the insulation is characterized in that the glass wool, fleece, hemp made of cedar, polyester or foam rubber.

In the above, the synthetic resin film is characterized in that the PVC or PE.

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As described above, in the present invention, the insulation is attached to the endothelial duct and the outer jacket, thereby preventing the deterioration of the thermal insulation caused by the displacement of the insulating material that may occur during construction, and even if the outer jacket is damaged, dust is generated well Environmental pollution can be reduced, the outer jacket is coated with a synthetic resin film is more robust, there is no gap between the insulation and the inner skin does not occur condensation, the volume is not only small, there is an advantage that the construction is easy.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 shows a perspective view of a duct substrate wound in the form of a roll according to the present invention.

As shown, the duct base 20 in the form of a roll is made by attaching the aluminum foil 21, 25 attached to the synthetic resin film 22, 24 on both sides of the heat insulating material (23).

To this end, first, a narrow and long aluminum foil 21, 25 is prepared, and the long length synthetic resin film 22, 24 having the same width as the aluminum foil 21, 25 is prepared. To match each other. As the method of attachment, a thermal fusion method may be used, and after the method is applied, it is preferable to wind up in a roll form for a subsequent process.

The synthetic resin films 22 and 24 may be manufactured using PVC or PE.

Attaching the synthetic resin films 22 and 24 to the aluminum foils 21 and 25 as described above is to increase the strength of the aluminum foils 21 and 25 forming the skin of the air duct.

Subsequently, the aluminum foils 21 and 25 having the synthetic resin films 22 and 24 attached to both sides of the heat insulating material 23 having the same width as the aluminum foils 21 and 25 as for forming the heat insulating layer. To form a duct base 20. As a method of attachment, the aluminum foils 21 and 25 and the heat insulator 23 to which the synthetic resin films 22 and 24 are wound, respectively, rolled up in a roll form, are laminated to face each other, and then laminated. Can be attached integrally. At this time, the aluminum foil 21, 25 and the heat insulating material 23 is integrally laminated with the synthetic resin film 22, 24 is preferably wound in a roll form for the subsequent process.

In addition, as the heat insulator 23, it is preferable to use a material that can block a lot of heat because the thermal conductivity of the material itself is small in order to prevent heat loss caused by heat flowing through the air flowing in the air duct and the temperature difference therebetween. It can be manufactured using hemp or foam rubber made of glass wool, polyester, fleece, cedar, and in particular, foam rubber does not generate harmful dust to the human body during the manufacturing process and requires air duct during construction. When cutting the foam rubber, which is an insulating material in the process of cutting to length, dust is not generated, so it is preferable because it does not pollute the working environment.

Figure 3 is an embodiment of the present invention, showing a perspective view of the air duct in the manufacturing process using the duct substrate in the form of a roll.

The air duct 30 shown in FIG. 3 is formed in a cylindrical shape by winding the duct base 20 of the structure shown in FIG. 2 in a spiral shape, and the winding method precedes the duct base released from the roll type duct base. The edge between the region and the trailing portion is overlapped and spirally wound, and the overlapping portion is fixed with an adhesive to form a cylindrical air duct. Thus, to manufacture the cylindrical air duct by releasing the roll-shaped duct base material is manufactured by the same method using a conventional cylindrical air duct manufacturing apparatus, in the present invention, the synthetic resin on both sides of the heat insulating material 23 in the cylindrical state It is characterized by manufacturing the air duct of the structure to which the aluminum foils 21 and 25 are attached via the films 22 and 24.

The aluminum foil 21 corresponding to the inner circumferential surface of the air duct 30 forms an inner duct to prevent moisture from penetrating into the heat insulating material 23 while forming a moving passage of air, and corresponding to the outer circumferential surface of the air duct 30. The aluminum foil 25 forms an outer jacket to protect the heat insulator 23 and prevents moisture in the air from penetrating into the heat insulator 23.

In the case of using the foamed rubber as the heat insulating material 23 in the air duct 30, as in the conventional air duct 10 shown in FIG. 1, it is possible to maintain the cylindrical shape without the need for steel wire to maintain the cylindrical shape. Therefore, manufacturing time is reduced, and foamed rubber does not emit dust which may pollute the environment, such as glass wool, so it can be manufactured as an eco-friendly product.

In addition, since the heat insulating material 23 and the aluminum foils 21 and 25 are integrally bonded to each other, the heat insulating material 23 and the aluminum foils 21 and 25 are not separated from each other during construction. Does not come, even if the air duct 30 is severely bent at the time of construction, there is no portion of the heat insulating material does not deteriorate warmth.

4 is a view for explaining a method of winding an air duct by binding the boundary portion of the trailing duct base material using a binding hole when the air duct is wound using the duct base according to another embodiment of the present invention.

As shown in FIG. 4, when the air duct 40 is formed by spirally winding the duct base 20, the binding hole 42 having a cross section having a Ω-type cross section does not directly adhere to an overlapping portion between the preceding duct base and the trailing duct base. The air duct 40 is formed by inserting the preceding duct base material and the trailing duct base material into the binding groove in the groove formed inside the binding hole 42 and binding the overlapping portion between the preceding duct base material and the trailing duct base material. Structure. As the fastener 42, a strong fastening force can be obtained, and a fastener made of metal or synthetic resin can be used, and the leading duct material and the trailing hole between the core wire and the fastener are inserted while inserting the core wire in the center of the fastener to increase the fastening force. It can be made to bind through a duct base material. As core wire, metal or synthetic resin is processed into thin wire.

As shown in FIG. 4B, the air duct 40 cuts the air ducts along the binding holes 42 so that the heat insulating material does not come out between the aluminum foils 21 and 25 without additional finishing treatment. There is an advantage not to do. In addition, when the outer surface is torn, the moisture is penetrated therebetween, so that it spreads to a large area, resulting in deterioration of warmth, breeding of bacteria, decay, and generation of odors. Even if some of the tears are reduced by the binding port 42, the above problems are reduced.

1 is a view showing the configuration of a flexible duct with a conventional heat insulating material,

2 is a perspective view of a duct substrate wound in the form of a roll according to the present invention,

Figure 3 is an embodiment of the present invention, a perspective view of the air duct in the manufacturing process using the duct substrate in the form of a roll,

4 is a view for explaining a method of winding an air duct by binding a boundary portion of a preceding and trailing duct base using a binding port when winding an air duct using another duct base.

<Description of the symbols for the main parts of the drawings>

10, 30, 40-flexible air duct, 11-endothelial duct,

13-jacket jacket, 14-steel wire,

15-tape, 20-duct substrate,

21,25-aluminum foil, 22,24-plastic film,

23-insulation, 42-fasteners.

Claims (6)

Heat-sealing the synthetic resin film onto the aluminum foil to wind the aluminum inner skin substrate in the form of a roll, and extracting the aluminum inner skin substrate from the roll-shaped aluminum inner skin substrate and releasing it from the roll-shaped insulation. Attaching and releasing the duct substrate in the form of a roll by thermally fusion to each other, releasing the duct substrate from the duct substrate in the form of a roll, and winding it in a spiral while overlapping the edge between the preceding and trailing portions, and adhesive or A method of manufacturing the air duct for preventing scattering of the insulating material dust comprising the step of fixing by using the binding sphere to form a cylindrical air duct. The method of claim 1, wherein the heat insulating material is glass wool, fleece, hemp made of cedar, polyester, or foamed rubber, characterized in that the method of manufacturing the air duct for preventing scattering dust. The method of claim 1, wherein the synthetic resin film is PVC or PE. delete delete delete

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