JP2005291593A - Duct - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe and suitably environmental-friendly duct having a durability allowing it to be installed outdoors and carried, having excellent workability, sound absorbing property, thermal insulation, and economic efficiency, enabling a construction period to be reduced remarkably. <P>SOLUTION: An organic substance-mixed inorganic high foam plate 3 formed by foam-molding with a high multiplication by mixing an organic substance having a binder effect formed mainly of an inorganic powder such as aluminum hydroxide therein is disposed on the inside of an outer plate 2 body forming an air passage formed by combining metal plate bodies with each other so as to form the duct 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a duct installed indoors and outdoors as an air conditioning facility for a building, and more particularly to a novel duct excellent in workability, sound absorption, heat insulation, durability, and economy.

Conventionally, as a duct 31 installed in a building as an air conditioner, as shown in FIG. 5, a galvanized steel plate 32 is bent into a rectangular tube shape, and its outer periphery is covered with glass wool 33 or the like as a heat insulating material, and further required. Depending on the situation, covering with a metal plate 34 referred to as cotton cloth winding / painting or racking has been performed. However, glass wool is easily dispersed as a fine powder, and health damage is a problem. Therefore, the present inventor forms an organic matter-mixed inorganic high-foamed plate in a cylindrical shape by mixing inorganic powders such as calcium carbonate and aluminum hydroxide as main raw materials with organic materials having a binder effect and foam-molding at a high magnification. Devised. This duct is not only lightweight and excellent in workability, but also exhibits safety, heat insulation, sound absorption, and air tightness, and covers the outer surface of the galvanized steel sheet with glass wool, etc. -It is an excellent duct that eliminates the need for painting work, shortens the construction period, and reduces labor and costs.
JP 2002-156152 A

  Although this duct has excellent characteristics, it is difficult to work on the site where the work space is not available and durable because it is made by cutting and adhering the fixed size organic mixed inorganic high foam plate at the construction site. Therefore, it was not suitable as an outdoor duct. In addition, in order to reduce the number of man-hours required for on-site construction, it is conceivable to unitize them in advance and assemble them into cylinders of a certain length and assemble them on-site. There were many problems.

  Therefore, the object of the present invention is to provide durability that can be installed and transported outdoors, and is excellent in workability, sound absorption, heat insulation, and economical efficiency, greatly reducing the construction period of duct installation, and safe. It is to provide a suitable duct that is environmentally friendly.

  In order to achieve the above object, the duct of the present invention has a binder effect with inorganic powders such as calcium carbonate and aluminum hydroxide as the main raw material inside the cylindrical body that forms a ventilation path formed by combining metal plates. It is characterized in that an organic matter-mixed inorganic high-foam plate formed by foaming at a high magnification with organic matter mixed therein is provided.

  In addition, an inorganic high foamed plate mixed with organic matter formed by foaming at a high magnification by mixing organic powder having a binder effect with inorganic powder such as calcium carbonate and aluminum hydroxide as a main raw material is joined in a rectangular tube shape. An L-shaped reinforcing frame is disposed at the outer peripheral joint portion of the cylinder.

  Further, the cylindrical body is formed into a cylindrical shape, and an organic substance-mixed inorganic high-foam plate is disposed inside the cylindrical body.

  Moreover, in order to provide non-water absorption, non-leakage and flexibility, the organic substance mixed organic high foamed plate is made of a synthetic resin having thermoplasticity.

  According to the duct of the present invention, an organic substance having a binder effect is mixed into the inside of a cylinder that becomes a ventilation path formed by combining metal plate bodies, using inorganic powder such as calcium carbonate and aluminum hydroxide as a main raw material. By arranging an organic mixed inorganic high foam plate formed by foaming at a high magnification, the outer periphery of the organic mixed inorganic high foam plate is protected by a metal plate and has the durability required for installation outdoors. Can be provided.

  In addition, an inorganic high foamed plate mixed with organic matter formed by foaming at a high magnification by mixing organic powder having a binder effect with inorganic powder such as calcium carbonate and aluminum hydroxide as a main raw material is joined in a rectangular tube shape. By arranging the L-shaped reinforcing frame at the outer peripheral joint of the cylinder, the corners that are easily damaged are protected, so the duct unit manufactured in advance in the factory is transported to the construction site and assembled easily. Is possible.

  In addition, a cylindrical duct that has been difficult to date can be easily manufactured by forming the cylindrical body into a cylindrical shape and disposing an organic matter-mixed inorganic high-foam plate in the cylindrical shape.

  Moreover, in order to provide non-water absorption, non-permeability, and flexibility, the organic matter-containing inorganic high-foamed plate is made of a synthetic resin having thermoplasticity so that the organic matter-containing inorganic high-foam plate has non-water-absorbing, non-permeability. Therefore, an excellent duct free from air leakage and liquid leakage can be obtained.

  1 and 2 show a first embodiment of a duct 1 according to the present invention. The duct 1 is an inner peripheral surface of a rectangular tube-like outer plate 2 made of a zinc iron plate, a color steel plate, a galvanium steel plate, or the like. In addition, the inorganic high foamed plate 3 mixed with organic matter and foamed at a high magnification by mixing organic powder with a binder effect using inorganic powders such as calcium carbonate, aluminum hydroxide, etc., adhesive for ducts and various mechanical joints It is comprised by arrange | positioning using the method etc.

  This organic material-mixed inorganic high-foam plate 3 has a specific gravity of about 0.08 to 0.16, which is foam-molded at a high magnification by mixing organic powder having a binder effect with inorganic powders such as calcium carbonate, aluminum hydroxide and talc as the main raw materials. It is a plate with a thickness of 15 to 30 mm, it is nonflammable because inorganic is the main raw material, has a non-destructive shape, is lightweight and can be cut with a cutter knife, and has a porous surface. It exhibits sound absorption due to having a large number of irregularities and excellent heat insulation. Furthermore, by mixing the organic substance with thermoplasticity as a binder, the foamed bubbles do not communicate with each other, and solve the problems of water absorption and leakage that are the disadvantages of inorganic foams independently. In addition, it can be bent freely with flexibility.

  The duct 1 of the present embodiment is formed in a rectangular tube shape by adhering the organic substance-mixed inorganic high foamed plate 3 to the four inner surfaces of the outer plate 2 formed in a rectangular tube shape. Bonding strength and hermeticity of the joint portion are greatly enhanced by bonding and fixing the square bars 4 made of the same material as the organic matter-mixed inorganic high-foam plate 3 at the respective locations. In addition to the square bar 4 made of the same material, an appropriate steel material may be used. Moreover, about the bending part of the duct 1, it respond | corresponds by arrange | positioning, adhering the organic substance mixing inorganic highly foamed board 3 according to the bending shape inside the outer plate 2 formed by bending beforehand. be able to. The organic matter-mixed inorganic high-foam plate 3 has a property of being easily bent, and by heating and cooling in this bent state, the thermoplastic resin of the binder can be solidified to exhibit a fixed form.

  When the duct 1 is continuously provided in the longitudinal direction, as shown in the drawing, the end surface portion of the organic matter-mixed inorganic high foamed plate 3 is joined with an adhesive, and the outer periphery of the joined portion of the outer plate 2 is connected to the outer plate 2. It is covered with a band plate 5 made of the same material or an appropriate material, and is fixed by adhesion. In addition to the method of bonding and fixing the band plate 5, an aluminum foil seal may be used, or a flange member may be provided in advance on the end face of the duct 1, and the flanges may be joined by appropriate means. It is.

  FIG. 3 shows a second embodiment of the duct according to the present invention, and this duct 11 is a so-called circular duct. Like the rectangular duct of the first embodiment described above, a zinc iron plate, a color steel plate, and galvanium are used. On the inner peripheral surface of a cylindrical outer plate 12 made of a steel plate or the like, the organic substance-mixed inorganic high foamed plate 3 that is also formed in a cylindrical shape is disposed.

  FIG. 4 shows a third embodiment of the duct of the present invention, and this duct 21 is similar to the first and second embodiments described above, and is made of inorganic powder such as calcium carbonate and aluminum hydroxide. The organic material-mixed inorganic high-foamed plate 3 formed by mixing organic material having a binder effect with high-magnification as a main raw material is first bonded into a rectangular tube shape using a duct adhesive or the like. And the L-shaped reinforcement frame 22 is connected and arrange | positioned at the outer periphery junction part and opening end surface part of this square tube. In addition, the bonding strength and sealing performance of the bonded portion can be greatly increased by bonding and fixing the square bars 4 made of the same material as the organic matter-mixed inorganic high-foamed plate 3 respectively at the four inner corner portions of the bonded portion. . Although the organic matter-mixed inorganic high-foam plate 3 is exposed over a wide area on the outer surface of the duct 21, the strength of the duct is increased by arranging the reinforcing frame 22 at all corners, and the outdoor duct Or manufactured as a unit at a factory, transported and assembled on site. In addition, since the organic substance-mixed inorganic high-foam plate 3 is exposed on a large area on the outer surface of the duct 21, the opening 23 can be easily opened by cutting and opening an appropriate portion as shown in FIG. It is possible to form and connect an appropriate connecting member or blowing member 24. Furthermore, even if the organic matter-mixed inorganic high-foam plate 3 is cut, no scattered matter is generated and the operation can be performed safely. These are excellent features not found in a duct provided with an outer plate.

It is a perspective view which shows the 1st Example of the duct of this invention. It is sectional drawing which shows the 1st Example of the duct of this invention. It is explanatory drawing which shows the 2nd Example of the duct of this invention. It is a perspective view which shows the 3rd Example of the duct of this invention. It is sectional drawing which shows the conventional duct.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Duct 2 Outer plate 3 Organic substance mixing inorganic highly foamed plate 4 Square bar 5 Band plate 11 Duct 12 Outer plate 21 Duct 22 Reinforcement frame 23 Opening part 24 Blowout member

Claims (4)

The inside of the cylinder that becomes the air passage formed by combining the metal plates is made of inorganic powder such as calcium carbonate and aluminum hydroxide as the main raw material, mixed with organic material with a binder effect, and foam-molded at a high magnification. A duct characterized by an inorganic high-foam plate mixed with organic matter. Joining an inorganic high foamed plate mixed with organic matter, which is made of inorganic powder such as calcium carbonate and aluminum hydroxide as a main raw material and mixed with organic material having a binder effect and foamed at a high magnification, into a rectangular tube shape. A duct characterized in that an L-shaped reinforcing frame is disposed at an outer peripheral joint portion. 2. The duct according to claim 1, wherein the cylindrical body has a cylindrical shape, and an organic matter-mixed inorganic high-foam plate is disposed inside the cylindrical body. 3. The duct according to claim 1 or 2, wherein the organic substance of the organic matter-mixed inorganic high-foamed plate is made of a synthetic resin having thermoplasticity so as to have non-water absorption, non-leakage and flexibility.

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