JP4898540B2 - Corrugated duct construction method - Google Patents

Description

  The present invention relates to a method for constructing a corrugated cardboard duct installed for air conditioning or ventilation.

  Recently, as air conditioning ducts installed in store buildings, etc., cardboard ducts have been proposed that are lightweight, excellent in workability and heat insulation, and easy to dispose of when removed. Patent Documents 1 and 2 below A construction method is described in which a corrugated board duct is suspended from a ceiling by hooking a wire in a hole of a hanging tool protruding from the top surface, and the corrugated board ducts are connected by winding an adhesive tape.

  Patent Document 3 listed below is not related to a corrugated cardboard duct, but when a blowout port is provided in a duct flow path, it is not a duct itself that is difficult to install due to restrictions on strength and weight, but a joint portion that connects the ducts. The thing which provided the exit is described.

JP 2006-29681 A JP 2006-29682 A JP 2002-267244 A

  However, in the construction methods described in Patent Documents 1 and 2 above, it is necessary to perform connection work while allowing the swinging of the corrugated cardboard duct to be adjusted and adjusting the suspension position. There is also a problem with the stability of the corrugated board duct.

  Moreover, when the joint part as described in Patent Document 3 is used, there is a problem that it is difficult to insert the duct into the opening of the joint part after the joint part is suspended from the ceiling.

  Then, this invention makes it a subject to provide the construction method which can hang and connect a corrugated board duct easily, can provide a blower outlet, and can install it in the stable state.

  In order to solve the above problems, in the present invention, in a construction method in which a corrugated cardboard duct is suspended and connected to a ceiling of a building, a connection body composed of a cradle and a lid with heat insulation is used, and the lid is removed. The cradle was suspended from the ceiling, the end of the cardboard duct was placed on the cradle, and the cradle was covered with a lid and fixed.

  Moreover, the said connection body shall have a blower outlet in a receiving stand, and decided to mount a cardboard duct in the position which does not block the opening of a blower outlet.

  According to the method for constructing a corrugated cardboard duct according to the present invention, after the cardboard duct is placed on the cradle that is suspended from the ceiling with the lid removed, the cradle is covered and the corrugated cardboard duct is connected. The work can be easily performed by suspending firmly so as not to swing, and the cardboard duct can be installed in a stable state to keep the air flowing inside the connection body warm.

  Also, when the outlet is provided in the cradle, since the load of the outlet does not act on the corrugated cardboard duct, creep deformation does not occur in the corrugated cardboard duct due to a long-term load. The ease of management can be improved and the cost can be reduced.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows an installation state of a corrugated cardboard duct according to a construction method according to the present invention. As shown in the figure, in this construction method, a metal connector 2 is used in order to suspend and connect a rectangular tube-shaped corrugated cardboard duct 1 to the ceiling of a building.

  The corrugated cardboard duct 1 is laminated with aluminum foil on both sides of the cardboard via an adhesive such as polyethylene in order to ensure incombustibility and moisture resistance, and the surface of the aluminum foil has heat resistance such as a nitrocellulose resin varnish. It is formed by folding a blank, which is coated with a paint having the same, and the periphery of the cardboard is sealed with aluminum tape along a ruled line.

  As shown in FIG. 2, the connection body 2 includes a cradle 3 and a lid 4. The cradle 3 has a pair of side surface portions 3b upright from both sides of the bottom surface portion 3a, and a foam rubber heat insulating material 5 fixed to the inner surface thereof by sticking or the like, and an opening formed in the bottom surface portion 3a. An air outlet 6 having a shutter mechanism is attached to the air outlet. A beam member 3c is passed between the upper portions of the opposing side surface portions 3b, and through-holes 3e are provided in the suspension pieces 3d attached to the central upper portion and the lower portion of each side surface portion 3b.

  In addition, the connection body 2 is good also as what gave predetermined | prescribed intensity | strength not only with a metal but with resin, corrugated cardboard, glass wool, gypsum, etc. as a material. In the case of using glass wool, gypsum, or the like that itself has heat insulation properties, it is not necessary to superimpose the heat insulating material 5 separately. Further, the heat insulating material 5 may be resin, corrugated cardboard, glass wool or the like in addition to foamed rubber.

  On the other hand, the lid 4 has an upward flange portion 4b formed on both sides of the top surface portion 4a, and a foam rubber heat insulating material 7 is adhered to the inner surface of the top surface portion 4a.

  In addition, pin holes 8 a and 8 b are provided at both end portions and an upper portion of the side surface portion 3 b of the cradle 3, and a pin hole 8 c is provided at the flange portion 4 b of the lid 4. The pin hole 8a in the side surface portion 3b is horizontally long so that the strict positioning of the corrugated cardboard duct 1 is not required, and the pin hole 8a is also provided in the heat insulating material 5 in communication therewith.

  When connecting the corrugated cardboard duct 1 using the connection body 2 as described above, first, as shown in FIG. 3, two suspension bolts 9 suspended from the ceiling are inserted into the through holes of the suspension piece 3d. The cradle 3 is supported in a suspended state on the ceiling by being inserted into 3e and screwing a nut into its lower end.

  Next, as shown in FIGS. 4 and 5, the end of the corrugated cardboard duct 1 to be connected is placed on the cradle 3. At this time, an interval is provided between the corrugated cardboard ducts 1 so as not to block the opening for the air outlet 6 formed in the bottom surface 3 a of the cradle 3.

  Then, the pin hole 1a previously drilled in the end portion of the corrugated cardboard duct 1 is aligned with the pin hole 8a in the end portion of the cradle 3, and the plastic fastening pin 10 is inserted into the pin holes 8a and 1a and is removed. The cardboard duct 1 is fixed to the cradle 3.

  Thereafter, as shown in FIGS. 5 and 6, the cradle 3 is covered with the lid 4, the pin hole 8b on the upper part of the cradle 3 and the pin hole 8c of the flange portion 4b of the lid 4 are aligned, The fastening bolt 11 is inserted into 8c and tightened with a nut, and the lid 4 is fixed to the cradle 3.

  In this state where the corrugated cardboard duct 1 is connected via the connection body 2, the heat insulating materials 5 and 7 are elastically crushed and are in close contact with the corrugated cardboard duct 1, and the corrugated cardboard duct 1 and the connection body 2 are sealed. Is done. In order to further improve the sealing performance, a coking process may be performed.

  According to the construction method as described above, the cardboard duct 1 is put on the cradle 3 after the lid 4 is removed and suspended from the ceiling, and then the cradle 3 is put on the cradle 3 to connect the cardboard duct 1. It is possible to easily perform the work by suspending the cradle 3 so as not to swing, and to install the corrugated cardboard duct 1 in a stable state.

  And the air which flows through the inside of the connection body 2 can be heat-retained with the heat insulating materials 5 and 7 stuck to the inner surface of the connection body 2.

  In addition, since the air outlet 6 is provided in the cradle 3, the load of the air outlet 6 does not act on the corrugated cardboard duct 1. Workability and ease of member management can be improved and cost reduction can be achieved compared to providing separately.

  Furthermore, by simply fixing at least one end of the corrugated cardboard duct 1 to the connecting body 2, it is possible to prevent the corrugated cardboard duct 1 from being displaced in the axial direction and falling off from the cradle 3. Even if the corrugated cardboard duct 1 is dropped from the table 3, the corrugated cardboard duct 1 is light in weight, so that an accident caused by dropping does not occur.

  In this embodiment, the hanging piece 3d is attached to the central upper part and the lower part of the side surface part 3b, but it may be attached only to the upper part.

  As shown in FIGS. 7 and 8, the connecting body 2 has the flange portion 4 b facing downward with respect to the top surface portion 4 a of the lid 4, the lid 4 straddles the cradle 3, and the suspension bolt 9 is inserted. It is possible to provide a hanging piece 4c to be hung with four hanging bolts 9.

Further, the outlet 6 can be omitted, and the connection body 2 can be used only for suspending and connecting the corrugated cardboard duct 1, or an inlet can be provided instead of the outlet 6. However, the use of the one without the air outlet 6 is outside the scope of the present invention.

  Furthermore, as shown in FIG. 9, the connection body 2 may be formed in a T shape so that the cardboard ducts are connected from three directions. Moreover, the connection body 2 is good also as Y shape according to arrangement | positioning of a cardboard duct.

  Moreover, as shown in FIG. 10, the connection body 2 may be formed in a cross shape so that the cardboard ducts are connected from four directions.

  Here, the lid 4 of each connection body 2 does not have to be made of a single plate material. For example, in the case of the lid 4 of the cross-shaped connection body 2, as shown in FIG. The materials 41 and 42 may be joined and formed.

  In addition, as shown in FIG. 12 and FIG. 13, when installing the corrugated cardboard duct 1 on the ceiling where the beam B of the building is arranged, a strip shape laminated with aluminum foil on the outer periphery of the corrugated cardboard duct 1 between the adjacent connectors 2 A corrugated cardboard holding member 12 may be wound, and a wire 14 may be inserted into a hole of a hanging tool 13 attached to the holding member 12 and suspended by a hanging bolt 9. Further, the chamber C may be interposed between the cardboard ducts 1.

  Further, in the duct flow path, the corrugated cardboard duct and the steel plate duct may be connected together.

The perspective view which shows the installation state of the corrugated cardboard duct by the construction method concerning this invention The disassembled perspective view which shows 1st Embodiment of the connection body used by construction same as the above. The perspective view which shows the suspended state of a receiving stand same as the above. The perspective view which shows the mounting process of a corrugated cardboard duct same as the above A perspective view showing the process of covering the same lid The perspective view which shows the state which covered the lid same as the above The disassembled perspective view which shows 2nd Embodiment of the connection body used by construction same as the above. The perspective view which shows the mounting process of a corrugated cardboard duct same as the above The disassembled perspective view which shows 3rd Embodiment of the connection body used by construction same as the above. The disassembled perspective view which shows 4th Embodiment of the connection body used by construction same as the above. Exploded perspective view showing a lid made of a plurality of lid materials Layout of the corrugated cardboard duct on the ceiling The perspective view which shows the holding material for suspension between connection tools same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Corrugated-card duct 1a Pin hole 2 Connection body 3 Base 3a Bottom face part 3b Side face part 3c Beam material 3d Hanging piece 3e Through hole 4 Lid 4a Top surface part 4b Flange part 4c Hanging piece 41, 42 Lid material 5 Heat insulating material 6 Outlet 7 Insulating material 8a, 8b, 8c Pin hole 9 Suspension bolt 10 Fastening pin 11 Fastening bolt 12 Holding material 13 Hanging tool

Claims (1)

In a construction method in which a corrugated cardboard duct is suspended and connected to the ceiling of a building, a connecting body consisting of a cradle with a heat insulating property and a lid is used, the cradle with the lid removed is suspended from the ceiling, An end is placed on a pedestal, and the pedestal is covered with a lid, and the connection body has a blowout opening in the pedestal, and the cardboard duct is placed in a position that does not hinder the opening of the blowout opening. construction method of cardboard duct.

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