KR100870044B1 - Insulated uninflammable foam plastic ventilation duct - Google Patents

Abstract

A ventilation duct having the heat insulation nature and fire retardant characteristic is provided to reduce cost and time for manufacturing and installing the ventilation duct and to cut down material cost by removing a finishing flange and a connect socket. A ventilation duct having the heat insulation nature and fire retardant characteristic comprises as the follows. A lower plate which is the material of the foam plastic is formed in the upper side so that straight groove(lower plate joint) has more than 2 at a predetermined interval. An upper plate(10) in which the straight groove field corresponding with the straight grooves of the lower plate is created in lower part over 2 while being arranged on the top of the lower plate. More than two wall which are combined with the upper plate and the lower plate are formed with a linear type protrusion and are the material of the foam plastic and is inserted in the straight groove of the lower plate and upper plate and is respectively combined in the upper portion and bottom. A taping part fixing the lower plate and the upper plate, and the longitudinal end of the wall is connected to the longitudinal end of the lower plate and the longitudinal end of the upper plate in the longitudinal direction.

Description

Ventilation duct with warmth and flame retardancy {INSULATED UNINFLAMMABLE FOAM PLASTIC VENTILATION DUCT}

The present invention relates to a foamed plastic ventilation duct having insulation and flame retardancy, and can be applied to a system for supplying and exhausting air in a building or a structure.

Conventional industrial ventilation ducts mainly use circular ones. Insulating ventilation ducts that transfer warm or cold air made through air-conditioning devices such as cold air heaters or hot air heaters used in the building's interior are mainly rectangular in shape to effectively utilize the interior space of the building. Ventilation duct of rectangular structure is used.

These rectangular ventilation ducts are metal materials manufactured by bending metal sheets such as tin steel sheets or steel sheets or galvanized steel sheets or stainless steel sheets with a thickness of about 0.5 to 1 mm in the required shape, and joining the edges together. Ventilation ducts are widely used. Hereinafter, the ventilation duct made by folding the above-mentioned metal sheets, such as a galvanized steel sheet, in square shape is called metal ventilation duct.

In addition, when one of the above-described ventilation ducts is used to transfer air cooled or warmed to a necessary place through the air conditioner, air-conditioning energy flowing in the above-described metal ventilation duct leaks to the outside of the ventilation duct through the surface of the metal ventilation duct and is wasted. In order to prevent the insulation, the outer surface of the ventilation duct made of the above-described metal sheet is wrapped with the outer surface of the metallic ventilation duct by selecting a thickness according to the required insulation coefficient such as expanded polystyrene or foamed polyurethane, glass wool, or wool wool. In order to finish the flame retardant and plastering of the outer surface of the heat insulating material, it is manufactured and installed in the field by wrapping again with a coating material such as aluminum foil (Foil) having a thin thickness and finishing it. Hereinafter, the ventilation pipe and the connector which serve as the above-mentioned heat insulation are collectively referred to as a general metal heat insulation ventilation duct.

However, as described above, the process of making the metal insulation ventilation duct is heavy and difficult to cut or bend to the required shape and complicated, and also the metal ventilation duct of a wide or long area to the upper or lower portion used in the interior of the building. Since the weight of the metal sheet constituting the metal sheet itself is large, the downward deflection occurs and it is difficult to maintain the original shape of the rectangular ventilation duct. The manufacturing process is difficult and complicated, such as cutting and bending the end portion to form the finishing flange face to connect the metal ventilation ducts to each other.

In addition, the process of cutting and coating according to the width and length of the required shape according to the shape of the ventilation duct required to cover and coat the lightweight insulation such as glass wool, foamed polystyrene block, etc. along the outer circumferential surface of the ventilation duct to add insulation. The manufacturing process, such as double-covering with a back-covered covering material, is complicated and requires much manpower and time.

Therefore, in order to reduce the cost of manpower and time and to improve the complicated manufacturing process of manufacturing the conventional ventilation duct of the prior art, non-flammable materials on both sides of the foamed plastic board, and workability such as bending or cutting, and usually the thickness is 0.08 ~ A double-sided pressurized insulating ventilation duct in which both sides are formed by cutting and bending a foamed plastic board pressed into a thin aluminum sheet of about 0.12 mm in the shape of the necessary ventilation duct and the aluminum foil is pressed (hereinafter referred to as 'aluminum double-sided pressurized insulating duct') Collectively).

However, the process of constructing the above-described aluminum double-sided pressurized insulating ventilation duct is performed by using a thin aluminum sheet coated with an adhesive on one side of a polystyrene board, a flame retardant foam polyurethane or a flame retardant foam phenol (phenol) board, or a glass wool. The insulation board is put into a hot press or roller type press machine, and the above-described aluminum sheet is covered and covered with both sides of the upper and lower portions of the above-described heat insulating material, or hot-pressed, or through a continuous roller press. It is made by pressing to make a thermally foamed plastic board in which metal sheets such as aluminum sheets are pressed on both sides, or an inorganic board such as glass wool or rock wool (hereinafter, by using a hot press or a continuous roller-type presser Heat Insulation such as Polyurethane Foamed Aluminum Sheets La the insulation board pressing the both sides, an aluminum crimp insulating ventilation ducts board "refers to keeping warm ventilation duct made of such aluminum crimp insulating ventilation ducts board also called" aluminum-sided crimp insulating ventilation ducts ").

In addition, in order to make the rectangular duct pipe of the thermal insulation ventilation duct with the above-mentioned aluminum crimping insulation ventilation duct board, the aluminum compression insulation ventilation duct board is placed on a flat floor, such as a smooth work table, and becomes a surface facing the inside of the rectangular ventilation duct structure. Dig a plurality of grooves in the form of a "V" to be inclined at an angle of 45 degrees on both sides with a knife, a hand tool, at the required position on the upper surface, and cut off both edges at the same 45 degree angle. And the three sides of the grooves formed on the inner side and the inclined surfaces of both edges are applied to both sides of the overlap and apply the adhesive on both sides by bending and bonding to wait until the adhesive hardens. To produce.

However, in the process of making the above-mentioned aluminum double-sided pressurized insulating ventilation duct and in order to maintain a constant angle and shape of the ventilation duct, the adhesive is applied while holding and fixing the walls and the upper plate or the lower plate on both sides so as not to be detached from the required position by human hands. It takes a lot of manpower and time to produce, such as waiting for it to harden, and there is a troublesome work.

Furthermore, it is a connector for making ventilation ducts with various shapes such as elbows, bands, tees, tees, and Y-shaped tees or reducers. In the process, draw the sketch correctly according to the size and dimensions of the ventilation duct required on the aluminum crimping board and cut it with a knife or scissors according to the sketch to make the top plate or the bottom plate. Is made by pressing a plurality of "V" shaped grooves with a press or the like to form a wall by bending it into the shape of the required shape, and assembling the bottom plate and the wall, or the wall and the top plate. The process of joining the walls made in the form of bent on the lower plate in the process of connecting, and the cutting surface joining each other of the lower plate and the wall The ililyi the production process such as that held by the human hand until solidify the rubbing of the liquid adhesive to wait in order to maintain the shape complex and is difficult and expensive in manpower and time.

In addition, the parts of the inner surface of the aluminum pressurized thermal insulation duct pipe made of the above-mentioned aluminum crimped ventilation duct board and the joints where the upper plate, the lower plate or the wall meet and are joined or joined are likely to have a minute gap, and the minute gap may cause a fire If the flame of flame reaches the gap formed in the above-mentioned joint of the ventilation duct and the flame and heat are transmitted, the foamed plastic resin melts or collapses, causing the fire or flame to expand, or the foamed plastic material is burned to generate toxic gas. There is a high risk of damage to life and property.

In order to solve the above-mentioned problem, in order to fill the gap generated between the wall of the inner surface of the aluminum crimping ventilation duct and the upper plate or the lower plate, the gap is made of flame retardant or non-flammable metal by adding an adhesive-coated aluminum tape to one side. Even if you try to fill the gap with tape, the length of the ventilation duct that is already formed in the shape of a square or curved surface is long, so it is not easy to attach the gap with aluminum adhesive tape.

In addition, the manufacturing cost of aluminum sheet press ventilation duct is large and the transportation cost is large when it is moved to the installation site. In addition, the cross section of one side of the ventilation pipe or the connector to be connected to each other by connecting the ventilation duct pipe and the connector at the installation site In order to make separate “F” shaped flanges of plastic or metal, or to connect and arrange aluminum crimped ventilation ducts made of aluminum crimp boards as described above, The production and installation process is complicated, as it is necessary to install two sockets for the connection of flame retardant plastic materials or metal materials by connecting them to each other as described above. Easily costs a lot.

 In addition, to solve the above problem, one of the above-described thermal insulation aluminum crimped ventilation pipe or aluminum crimped ventilation connector is made by enlarging one end and then the other aluminum crimped ventilation duct is inserted and connected. It is also conceivable to make a double-sided compressed ventilation duct and connect or install it. However, this method is also complicated and difficult to install in a narrow space such as a ceiling or a halfway between the ceiling and banja where ventilation ducts are mainly installed.

The present invention has been made to solve the above problems of the prior art, the foamed plastic ventilation duct having heat insulation and flame retardancy according to the present invention is easy to assemble and install, can cope with the risk of fire and the installation space of the ventilation duct The aim is to provide a ventilation duct that can be minimized and has the effect of saving energy.

The above object of the present invention is a material of a foamed plastic and two or more linear grooves (lower plate coupling parts) formed on the upper surface with a predetermined interval, and a material of the foamed plastic is disposed on the upper portion of the lower plate and the lower plate on the lower surface The upper plate formed with two or more linear grooves corresponding to the linear grooves of the upper plate, and the material of the foamed plastic is formed in the upper and lower linear protrusions are fitted into the linear grooves of the upper plate and the lower plate, respectively, and between the lower plate and the upper plate At least two walls coupled to the upper plate and the lower plate, wherein the longitudinal end of the wall is located at a different point in the longitudinal direction and the longitudinal end of the lower plate and the longitudinal end of the upper plate, the lower plate And the wall is fitted and coupled, the lower plate, the upper plate and the wall is a plurality of longitudinally connected, the longitudinal direction To point the upper panel are in contact with each other, are achieved by a ventilation duct, it characterized in that the additional fixing taping to fix surrounding the upper plate, lower plate and the wall formed.

In addition, the metal foil is preferably attached to the surface of the upper plate, the lower plate and the wall.

In addition, it is preferable that a flame retardant coating layer coated with cement mortar or a liquid flame retardant resin is further formed on the surfaces of the upper plate, the lower plate and the wall.

In addition, the upper plate, the lower plate and the wall is preferably formed by electric hot wire cutting molding.

In addition, the upper plate, lower plate and the wall is preferably formed by cutting by wire rotation.

In addition, each of the upper plate and the lower plate is formed with three or more linear grooves, the wall is provided with a number corresponding to the number of passages to be divided is coupled between the upper plate and the lower plate, two or more passages separated by the wall It is preferable that some of the passages are connected to the intake port and the other passages except the portion of the passages are connected to the exhaust port.

In addition, three or more linear grooves are formed in each of the upper plate and the lower plate, and the wall is connected to both edges of the upper plate and the lower plate through two linear grooves formed at both edges of the upper plate and the lower plate, thereby blocking a passage from the outside. And at least one heat exchanger wall made of a thermally conductive material is installed through the straight grooves between the walls coupled to both edges and at the same time to divide the passage into a plurality of passages. It is preferable that some passages of the plurality of passages separated by are connected to the intake port and the other passages except for the partial passages are connected to the exhaust port.

Foamed plastic ventilation duct having heat insulation and flame retardancy according to the present invention can be composed of a heat insulating material having a thermal insulation function and a structural material having a structural stability as a single body and does not require a finishing flange, connection socket, etc., material cost is reduced and manufactured And the time and cost of installation can be reduced.

In addition, the foamed plastic ventilation duct having thermal insulation and flame retardancy according to the present invention can be reinforced in flame retardant function to significantly reduce the risk of fire accident.

In addition, since various shapes can be formed by the foamed plastic ventilation duct electric heating wire having heat insulation and flame retardancy according to the present invention, the shape and structure of the ventilation duct and the size and thickness thereof can be freely and variously manufactured.

In addition, the ventilation duct according to the present invention uses a lightweight foamed plastic and can be assembled in the field, the upper plate, the lower plate and the wall, so that the weight of the ventilation duct itself can be reduced and the volume when transporting the ventilation duct can be transported And saving the cost of movement and the movement of the ventilation duct is easy.

Ventilation duct according to the present invention can increase the production efficiency by manufacturing a large amount of ventilation duct within a short time because it uses an automated electric heating molding apparatus.

In addition, it performs both functions of supplying and exhausting with one ventilation duct at the same time, thus saving material cost and utilizing space in the building. In addition, the heat exchange wall combines the air supply and exhaust functions in a single ventilation duct to utilize the space while adding heat exchange to reduce the cost of heating and cooling energy.

Hereinafter, with reference to the accompanying drawings it will be described in detail with respect to the configuration of the foam plastic ventilation duct having heat insulation and flame retardancy according to a preferred embodiment of the present invention. In order to simplify description, the same reference number is attached | subjected about the structure which performs the same function.

1 is a perspective view showing the configuration of the upper plate 10, the lower plate 20 and the wall 30 of the foamed plastic ventilation duct having thermal insulation and flame retardancy according to the first embodiment of the present invention, Figure 2 is Sectional drawing which shows the structure of the upper board 10, the lower board 20, and the wall 30 of the foamed plastic ventilation duct which have heat insulation and flame retardance which concerns on 1st Example. As shown in Figure 1 and 2, the foamed plastic ventilation duct (hereinafter referred to as 'ventilating duct') having a heat insulation and flame retardancy according to the first embodiment of the present invention is the upper plate 10, the lower plate formed of a foamed plastic material 20 and the wall 30 are comprised.

The upper plate 10 forms an upper portion of the ventilation duct, and linear grooves 12 extending in the extending direction of the ventilation duct are formed at portions adjacent to both edges of the lower surface, respectively.

The lower plate 20 forms a lower portion of the ventilation duct, and the linear grooves 22 corresponding to the straight grooves 12 of the upper plate 10 extend along the extending direction of the ventilation duct at portions adjacent to both edges of the upper surface. It is formed.

The wall 30 forms both sides of the ventilation duct, and a linear protrusion 32 is formed at the top thereof to be coupled to the linear groove 12 of the upper plate 10 and the linear groove 22 of the lower plate 20 is formed at the bottom thereof. ) Is formed with a straight projection 34 that can be coupled to.

Foil 40 is bonded to the upper plate 10, lower plate 20 and the wall 30 in order to provide a coating function, a finishing material function and a fire protection function of the ventilation duct, a detailed description will be described later.

The grooves or protrusions formed in the upper plate 10, the lower plate 20, and the wall 30 are referred to as straight grooves 12 and 22 or straight protrusions 32 and 34. 20 and to the wall 30 is formed in a straight line along the direction of extension of the ventilation duct.

3 is a perspective view illustrating a foamed plastic ventilation duct having heat insulation and flame retardancy according to a first embodiment of the present invention. As shown in FIG. 3, in the ventilation duct according to the first embodiment of the present invention, the upper plate 10 and the lower plate 20 are formed to have the same length and width, and the side walls are the upper plate 10 and the lower plate 20. It is formed to have the same length as. Here, the length of the upper plate 10, lower plate 20 and the wall 30 means the length of the ventilation duct in the extension direction.

The upper plate 10 and the lower plate 20 are disposed so that both ends thereof are positioned at the same distance when the ventilation duct is extended in the reference direction. 10) and the ends of the lower plate 20 are disposed on different distances. That is, the upper plate 10 and the lower plate 20 are arranged side by side so as to be superimposed on each other and the wall 30 is alternately arranged with the upper plate 10 and the lower plate 20.

In this arrangement, the linear protrusions 34 formed at the lower end of the side wall are fitted into the linear grooves 22 formed at the upper surface of the lower plate 20, and the linear protrusions 32 formed at the upper end of the side wall are connected to the upper plate 10. It is fitted into a straight groove 12 formed in the lower surface is coupled.

Ventilation duct according to the first embodiment of the present invention is the upper plate 10, the lower plate 20 and the wall 30 are connected to each other as many times as the length of the intended ventilation duct assembled, the upper plate 10 adjacent to each other And the upper plate 10, the lower plate 20, and the wall 30 are fixed by using the heat resistant tape 50 at the points where the lower plate 20 is connected. The heat resistant tape 50 may be a metal heat resistant tape 50 such as an aluminum tape, a copper tape, or a heat resistant resin tape made of a heat resistant resin.

Since the surfaces of the upper plate 10, the lower plate 20, and the wall 30 surrounded by the heat resistant tape 50 are located on the same plane with a plurality of heights, the heat resistant tape 50 can ensure a reliable sealing. Air leakage is prevented. The reason is that since the respective surfaces surrounded by the heat-resistant tape 50 maintain one flat surface without bending, the tape can be taped firmly with almost no gaps. In addition, since the upper plate 10 and the lower plate 20 and the wall 30 are interlaced with each other, at the point of taping with the heat-resistant tape 50, the up-down direction is sealed by the heat-resistant tape 50 and both sides are staggered. It is sealed by the wall 30 arrange | positioned.

Figure 4 is a perspective view showing the configuration of the elbow portion of the foamed plastic ventilation duct having thermal insulation and flame retardancy according to the first embodiment of the present invention. As shown in FIG. 4, the ventilation duct according to the first embodiment of the present invention may be used to cover the upper plate 110, the lower plate 120, and the wall 130 itself when a curved portion such as an elbow is needed in the path of the ventilation duct. The upper plate 110, the lower plate 120 and the wall body 130 are assembled in the same manner as described above by producing a curved shape.

The manufacturing of the upper plate 110, the lower plate 120 and the wall 130 itself in a curved shape, which will constitute a curved portion of the elbow of the ventilation duct, etc. may be made by an electric hot wire cutting molding machine and a heat gun.

The upper plate 10, the lower plate 20 and the wall 30 of the foamed plastic material used in the present embodiment may be adopted by configuring among the following materials, but is not limited to the materials illustrated below. Specifically, the foamed polystyrene block of the bead molding method is cut into a flat plate by an electric heating wire, or an extruder, and the foamed polystyrene resin is melted by heat and foamed by spraying by pressing butane gas or freon gas, etc. Extruded polystyrene board made by extrusion foam molding in the form of a board, or a foamed polyurethane board made by foam molding by mixing and contacting a liquid polyol and an isocyanate, Alternatively, foamed polyisomerates (PIR), foamed plastic materials such as foamed phenol or foamed plastic materials having flame retardancy, etc., which are foam-molded by contacting and foaming polyol and isonurate may be used.

The foamed plastic block is cut into a rectangular plate shape through an electric hot wire cutting machine or a saw blade cutting machine to make a foamed plastic board, and the top plate of the ventilation duct according to the present invention (10, 110), The lower plates 20 and 120 and the walls 30 and 130 are constituted.

In addition, various foamed plastic blocks or boards described above may be used as flame retardant materials such as talc, aluminum hydroxide, and magnesium hydroxide. Flame retardant foamed plastic blocks or boards made by adding or mixing inorganic or organic flame retardants such as sodium silicate or carry silicate.

The board | substrate etc. which cut | disconnected the block of foam plastic material or the above-mentioned block in the form of a rectangular board | plate material through the electric wire cutting machine, or the saw blade cutting machine etc. are prepared as the material of the thermal insulation foam plastic insulation material of this invention.

In addition, in the present invention, the expanded polystyrene block uses an electric heating wire cutting molding apparatus that cuts using an electric heating wire to have the shape, structure, and thickness of the necessary ventilation duct. The electric heating wire cutting molding apparatus may include a function of receiving a shape and a dimension of a necessary ventilation duct and moving the electric heating wire up, down, left, and right according to the control of the computer to perform cutting.

However, as described above, flame-retardant expanded polystyrene blocks containing inorganic materials are cut by electric heating wire for the purpose of making flame retardant such as talc and aluminum hydroxide having high density of isocyanate-based foamed polyurethane or isonurate-based foam made as described above. Difficult to do Therefore, in such a case, it is preferable to use a steel wire cutting device in which the endless type steel wire having protrusions is rotated on a drum to cut the block by friction with the steel wire.

In addition, the formation of the straight grooves 12 and 22 or the straight protrusions 32 and 34 in the upper plates 10 and 110, the lower plates 20 and 120, and the walls 30 and 130 may be carried out by using a hot wire gun using a hot strip. wire gun) or by vibrating the cutting blade.

In addition, according to the present invention, the electric heating wire cutting molding machine described above may form a ventilation duct having a rectangular shape and an inner surface of a circular or elliptical structure to reduce the resistance of air flowing in the ventilation duct, thereby improving the blowing efficiency. At this time, the upper plate, the lower plate and the wall is at least one surface is formed in a curved surface so that the inner space of the ventilation duct is circular or oval, even at this time, it is obvious that the upper plate and the lower plate is formed with a straight groove and the wall is formed with a straight projection.

5 is a perspective view showing the configuration of a foamed plastic ventilation duct having heat insulation and flame retardancy according to a second embodiment of the present invention. As shown in FIG. 5, the ventilation duct according to the second embodiment of the present invention is different from the configuration of the ventilation duct according to the first embodiment shown in FIGS. 1 to 3. There is a difference in that both the air supply passage and the exhaust passage are formed in one ventilation duct by additionally installing the separation wall 35 made of foamed plastic material in the space forming the passage. In the present embodiment, a case in which the space inside the ventilation duct is separated into two is described, but the space inside the ventilation duct may be separated into three or more according to the purpose of use. In addition, in the present embodiment, the space inside the ventilation duct is separated left and right, but may be separated up and down.

If the ventilation duct according to the first embodiment of the present invention is used in the case of using one of the air supply or exhaust, the ventilation duct according to the second embodiment of the present invention is an internal space of two or more spaces It is assumed that the separation and supply and exhaust can be achieved in one ventilation duct.

6 is a perspective view showing the configuration of a foamed plastic ventilation duct having heat insulation and flame retardancy according to a third embodiment of the present invention. As shown in FIG. 6, the ventilation duct according to the third embodiment of the present invention is similar in configuration to the ventilation duct according to the second embodiment shown in FIG. 5, except that the space inside the ventilation duct of the second embodiment. The heat exchange wall 60 is formed of a thin metal plate such as copper or aluminum thin plate having excellent thermal conductivity in place of the partition of the foamed plastic material separating the insulating film.

Since the heat exchange wall 60 is formed of a metal plate, the method of coupling the upper plate 10 and the lower plate 20 with the foamed plastic wall 30 is different. That is, the heat exchange wall coupling grooves 14 and 24 formed to couple the heat exchange wall 60 to the upper plate 10 and the lower plate 20 have a 'T' shape, a 'Z' shape, a 'A' shape, ' The upper and lower ends of the heat exchange wall 60 may also be inserted into and coupled to the heat exchange wall coupling grooves 14 and 24 of the upper plate 10 and the lower plate 20. It is formed so as to correspond to the shape of the heat exchange wall coupling groove of the upper plate 10 and the lower plate 20 of the shape, 'Z' shape, 'a' shape, 'b' shape. And the shape of the heat exchange wall coupling grooves 14 and 24 formed on the top plate 10 and the bottom plate 20 to be coupled to the bottom plate 20 and the top and bottom ends of the heat exchange wall 60. Of course, a variety of shapes that enable the coupling of the lower plate 20 and the heat exchange wall 60 can be adopted.

As the heat exchange wall 60 is formed inside the ventilation duct, the air supply and the exhaust air flowing in the direction intersecting the inside of the ventilation duct are at the same time to achieve the supply and exhaust as a single ventilation duct through the heat exchange wall 60 Energy can be saved by exchanging heat energy with each other. For example, it can be used as heating air by heating the low-temperature air that enters the interior from the outside of the building in winter, and use it as indoor ventilation air by heat-exchanging the high-temperature air outside the building with the low-temperature air exhausting from the room in summer. have.

FIG. 7 is a perspective view illustrating a cover for shielding a passage of a foamed plastic ventilation duct having heat insulation and flame retardancy according to a first embodiment of the present invention. As shown in FIG. 7, when the passage of the ventilation duct according to the first embodiment of the present invention is to be blocked at one side, the ventilation duct closely adheres to the ends of the upper plate 10, the lower plate 20, and the wall 30. A shielding cover 70 in which the shielding portion 74 protrudes from the flange 72 and the space of the ventilation duct to block the space may be used.

As shown in Figures 1 and 2, the inner and outer surfaces of the upper plate 10, lower plate 20 and the wall 30 in order to give a covering function, the finish material function and the fire protection function of the ventilation duct according to the present invention The top plate 10 and the bottom plate 20 are coated with a flame retardant acrylic resin, melamine, polyurethane, or a flame retardant adhesive resin such as phenol, or a foil 40 made of aluminum. And thermal insulation foam plastic ventilation ducts in such a manner that the grooves 30 and 22 or the protrusions 32 and 34 of the wall 30 are bonded to or over a part of the portion where the straight grooves 12 and 22 are formed. The surface of the ventilation duct because the foil 40 is adhered to the upper plate 10, the lower plate 20 and the wall 30 in which the straight grooves 12 and 22 and the straight protrusions 32 and 34 are formed. Direct exposure to this flame can be minimized.

In addition, it sprays liquid thermosetting plastic resins, such as polyurethane, polyurea, and flame-retardant plastics, which are liquid, quick-curing, and flame-retardant resins, replacing copper or aluminum foil (40). By spraying the inner and outer surfaces of the upper plate 10, lower plate 20 and the wall 30 using a gun or the like, a layer having a coating function, a finishing function, and a fireproof function may be formed with a required thickness of 1.5 mm or more. .

Two types of flame-retardant liquid thermosetting coating resins, isocyanate resin and amine resin, that is, two-component thermosetting resins, are pumped through high pressure pumps and hoses in different reservoirs and mounted on spray guns. It may be sprayed by different spray nozzles which are in contact with each other to cause chemical reactions and to cure within 3 to 20 seconds.

Specifically, the process of applying a layer of coating, finishing, and fire resistance to the ventilation duct is performed by laying the lower plate 20 on the floor and placing the wall 30 in a state in which the lower plate 20 is crossed with the straight grooves 22 formed in the lower plate 20. After fitting the straight protrusions 34 of the wall 30 into the lower plate 20 and the wall 30 in the ()), the above-mentioned liquid fast curing polyurethane inside and outside the lower plate 20 and the wall (30) Alternatively, a fast-curing polyurea or flame-retardant polyurethane or flame-retardant polyurea resin is sprayed and applied to a required thickness of 1.5 mm or more through a high pressure spray gun and coated. In addition, the inner and outer surfaces of the upper plate 10 of the ventilation duct are coated with a liquid and flame-retardant fast-curing polyurethane or flame-retardant polyurea resin by spraying and coating in a manner that the lower plate 20 and The top plate 10 is assembled to the assembly of the wall 30.

It is also possible to apply the flame retardant resin in the state in which the wall 30 is coupled to the lower plate 20 as described above, but after installing the flame retardant resin on the upper plate 10, the lower plate 20 and the wall 30 separately, the installation site In the upper plate 10, the lower plate 20 and the wall 30 is also coupled to each other in a manner of assembling.

In addition, it replaces copper or aluminum foil (40) so that it does not catch fire or burn in the event of a fire or heat when a fire occurs, or foam plastic in cement or cement whose main component is lime to reinforce structural strength. In order to improve the adhesiveness with the material, the cement mortar made by mixing the binder of the binder such as acrylic or EVA is mixed with water to form a liquid cement mortar. 10), the lower plate 20, and the inner surface and the outer surface of the wall 30, it is also possible to apply and dry with a brush, roller or the like to the thickness required to be 1mm or more in general.

Ventilation duct according to the present invention can be assembled to fit the linear groove and the linear groove formed in the upper plate, the lower plate and the wall without a separate coupling member has an effect of facilitating the installation process of the ventilation duct.

Ventilation duct according to the present invention is a structure in which the linear projection is assembled by fitting a predetermined depth in the linear groove formed in the upper plate, the lower plate and the wall, the possibility of the gap of air leakage is significantly reduced.

In addition, in the embodiments of the present invention, the shape of the linear grooves and the linear protrusions formed on the upper plate, the lower plate and the wall is not only the above-described shape, but also various types of ones as long as the male and female are engaged with each other so that air does not leak out. Which may fall within the scope of the present invention.

In addition, the ventilation duct according to the present invention can be surrounded by the heat-resistant tape not only the point where the top and bottom plates are connected to each other, but also the points where the side walls are connected to each other to improve the air leakage prevention function.

In addition, the upper plate, the lower plate and the wall are connected to each other in the longitudinal direction along the extension direction of the ventilation duct, so that the grooves and projections that are fitted to each other at the ends of the upper plate, the lower plate and the wall in the longitudinal direction form an air leakage prevention effect. Can be further improved.

In addition, since the upper plate, the lower plate and the walls constituting the ventilation duct according to the present invention can be manufactured in a desired shape by the electric heating wire cutting molding apparatus, it is less trouble to bend the upper plate, the lower plate and the wall to produce the ventilation duct. Can ensure the accuracy of the dimensions.

The electric hot wire cutting molding apparatus used for the processing of the foamed plastic block, including those disclosed in Japanese Patent Laid-Open Publication No. 2005-35498, the electric hot wire cutting molding apparatus, hot line gun, steel wire cutting device is a common knowledge in the art As it is obvious to the person who has it, detailed explanation is omitted.

Ventilation duct according to the present invention may be connected to the air supply or exhaust port for ventilation or connected to the air supply and the exhaust port at the same time, the configuration is connected to the air supply and the exhaust port is obvious to those skilled in the art will not be described in detail.

1 is a perspective view showing the configuration of the upper plate, the lower plate and the wall of the foamed plastic ventilation duct having thermal insulation and flame retardancy according to the first embodiment of the present invention,

2 is a cross-sectional view showing the configuration of the upper plate, the lower plate and the wall of the foamed plastic ventilation duct having thermal insulation and flame retardancy according to the first embodiment of the present invention,

3 is a perspective view illustrating a foamed plastic ventilation duct having heat insulation and flame retardancy according to a first embodiment of the present invention;

4 is a perspective view showing the configuration of the elbow portion of the foamed plastic ventilation duct having thermal insulation and flame retardancy according to the first embodiment of the present invention,

5 is a perspective view showing the configuration of a foamed plastic ventilation duct having thermal insulation and flame retardancy according to a second embodiment of the present invention,

6 is a perspective view showing the configuration of a foamed plastic ventilation duct having heat insulation and flame retardancy according to a third embodiment of the present invention;

FIG. 7 is a perspective view illustrating a cover for shielding a passage of a foamed plastic ventilation duct having heat insulation and flame retardancy according to a first embodiment of the present invention.

* Explanation of Major Drawing Codes *

10: top plate 20: bottom plate

30: bulkhead 40: foil

50: heat-resistant tape 60: heat exchange wall

Claims (7)

A lower plate formed of a foamed plastic material and having two or more linear grooves (lower plate coupling portions) formed at predetermined intervals on an upper surface thereof; An upper plate formed of a foamed plastic material and disposed on an upper portion of the lower plate, and having two or more linear grooves formed on a lower surface thereof corresponding to the linear grooves of the lower plate; It is a material of the foamed plastic and formed in the upper and lower straight projections are fitted into the linear groove of the upper plate and the lower plate, respectively, and coupled to the upper plate and the lower plate between the lower plate and the upper plate and two or more wall; The upper end, the lower plate and the wall are fitted to each other so that the longitudinal end of the wall is located at a different point in the longitudinal direction from the end in the longitudinal direction of the lower plate and the longitudinal end of the upper plate, A plurality of the lower plate, the upper plate and the wall is connected in the longitudinal direction, a fixing tape for fixing the upper plate, the lower plate and the wall surrounding the upper plate in contact with each other in the longitudinal direction; ventilation duct characterized in that the formed . The method of claim 1, Ventilation duct characterized in that the metal foil is attached to the surface of the upper plate, the lower plate and the wall. The method of claim 1, Ventilation duct characterized in that the top plate, the bottom plate and the surface of the wall is further formed with a flame retardant coating layer coated with cement mortar or liquid flame retardant resin. The ventilation duct of claim 1, wherein the upper plate, the lower plate, and the wall are formed by electric hot wire cutting. The ventilation duct of claim 1, wherein the upper plate, the lower plate, and the wall are formed by cutting by wire rotation. The method of claim 1, Three or more linear grooves are formed in each of the upper plate and the lower plate, and the wall has a number corresponding to the number of passages to be divided, and is coupled between the upper plate and the lower plate, Ventilation duct, characterized in that some of the two or more passages separated by the wall is connected to the inlet port and the other passages except the portion of the passage is connected to the exhaust port. The method of claim 1, Three or more linear grooves are formed in each of the upper plate and the lower plate, and the wall is connected to both edges of the upper plate and the lower plate through two linear grooves formed at both edges of the upper plate and the lower plate to form a passage blocked from the outside. and, At least one heat exchanger wall made of a thermally conductive material is installed through the straight groove between the walls coupled to both edges and at the same time between the upper plate and the lower plate to divide the passage into a plurality of passages, which are divided by the heat exchange wall. Ventilation duct, characterized in that some of the plurality of passages are connected to the inlet port and the other passages except the portion of the passage is connected to the exhaust port.

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